Merge branch 'release/2.5.0.0beta26'

Currently translated at 94.9% (388 of 409 strings)

Translation: KeePass DX/Strings
Translate-URL: https://hosted.weblate.org/projects/keepass-dx/strings/sv/

.github/ISSUE_TEMPLATE/bug_report.md

@@ -38,7 +38,7 @@ If applicable, add screenshots to help explain your problem.
 **Android (please complete the following information):**
  - Device: [e.g. GalaxyS8]
  - Version: [e.g. 8.1]
- - Browser: [e.g. Chrome]
 
 **Additional context**
 Add any other context about the problem here.
+ - Browser for Autofill: [e.g. Chrome version X]

CHANGELOG

@@ -1,3 +1,24 @@
+KeepassDX (2.5.0.0beta26)
+ * Download attachments
+ * Change file size string format
+ * Prevent screenshot for all screen
+ * Auto performed "Go" key in Magikeyboard
+ * Restore and delete entry history
+ * Setting to hide expired entries
+ * New Black theme
+ * Fix crash when clearing clipboard
+ * Fix attachments compressions
+ * Fix dates
+ * Fix UUID message for Database v1
+
+KeepassDX (2.5.0.0beta25)
+ * Setting for Recycle Bin
+ * Fix Recycle bin issues
+ * Fix TOTP
+ * Fix infinite save
+ * Fix update group
+ * Fix OOM
+
 KeepassDX (2.5.0.0beta24)
  * Add OTP (HOTP / TOTP)
  * Add settings (Color, Security, Master Key)

ReadMe.md

@@ -11,7 +11,7 @@
  * **Compatible** with the majority of alternative programs (KeePass, KeePassX, KeePassXC...)
  * Allows **fast copy** of fields and opening of URI / URL
  * **Biometric recognition** for fast unlocking *(Fingerprint / Face unlock / ...)*
- * **One-Time Password** management *(HOTP / TOTP)*
+ * **One-Time Password** management *(HOTP / TOTP)* for Two-factor authentication (2FA)
  * Material design with **themes**
  * **AutoFill** and Integration
  * Field filling **keyboard**
@@ -65,7 +65,7 @@ Other questions? You can read the [F.A.Q.](https://github.com/Kunzisoft/KeePassD
 
 ## License
 
- Copyright (c) 2019 Jeremy Jamet / [Kunzisoft](https://www.kunzisoft.com).
+ Copyright (c) 2020 Jeremy Jamet / [Kunzisoft](https://www.kunzisoft.com).
 
  This file is part of KeePassDX.
 

app/build.gradle

@@ -6,14 +6,13 @@ apply plugin: 'kotlin-kapt'
 android {
     compileSdkVersion 28
     buildToolsVersion '28.0.3'
-    ndkVersion "20.1.5948944"
 
     defaultConfig {
         applicationId "com.kunzisoft.keepass"
         minSdkVersion 14
         targetSdkVersion 28
-        versionCode = 24
-        versionName = "2.5.0.0beta24"
+        versionCode = 26
+        versionName = "2.5.0.0beta26"
         multiDexEnabled true
 
         testApplicationId = "com.kunzisoft.keepass.tests"
@@ -28,7 +27,6 @@ android {
         }
     }
 
-
     buildTypes {
         release {
             minifyEnabled = false
@@ -109,8 +107,6 @@ dependencies {
     implementation 'org.apache.commons:commons-io:1.3.2'
     // Apache Commons Codec
     implementation 'commons-codec:commons-codec:1.11'
-    // Base64
-    implementation 'biz.source_code:base64coder:2010-12-19'
     // Icon pack
     implementation project(path: ':icon-pack-classic')
     implementation project(path: ':icon-pack-material')

app/src/androidTest/java/com/kunzisoft/keepass/tests/PwDateTest.kt

@@ -1,37 +0,0 @@
-/*
- * Copyright 2019 Jeremy Jamet / Kunzisoft.
- *
- * This file is part of KeePass DX.
- *
- *  KeePass DX is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  KeePass DX is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with KeePass DX.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-package com.kunzisoft.keepass.tests
-
-import junit.framework.TestCase
-
-import com.kunzisoft.keepass.database.element.PwDate
-import org.junit.Assert
-
-class PwDateTest : TestCase() {
-
-    fun testDate() {
-        val jDate = PwDate(System.currentTimeMillis())
-        val intermediate = PwDate(jDate)
-        val cDate = PwDate(intermediate.byteArrayDate!!, 0)
-
-        Assert.assertTrue("jDate and intermediate not equal", jDate == intermediate)
-        Assert.assertTrue("jDate and cDate not equal", cDate == jDate)
-    }
-}

app/src/androidTest/java/com/kunzisoft/keepass/tests/StringDatabaseKDBUtilsTest.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 Brian Pellin, Jeremy Jamet / Kunzisoft.
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
  *
  * This file is part of KeePassDX.
  *
@@ -19,20 +19,15 @@
  */
 package com.kunzisoft.keepass.tests
 
-import org.junit.Assert.assertArrayEquals
-
-import java.io.ByteArrayOutputStream
-import java.util.Calendar
-import java.util.Random
-
+import com.kunzisoft.keepass.database.element.DateInstant
+import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.ULONG_MAX_VALUE
+import com.kunzisoft.keepass.stream.*
 import junit.framework.TestCase
+import org.junit.Assert.assertArrayEquals
+import java.io.ByteArrayOutputStream
+import java.util.*
 
-import com.kunzisoft.keepass.database.element.PwDate
-import com.kunzisoft.keepass.stream.LEDataInputStream
-import com.kunzisoft.keepass.stream.LEDataOutputStream
-import com.kunzisoft.keepass.utils.Types
-
-class TypesTest : TestCase() {
+class StringDatabaseKDBUtilsTest : TestCase() {
 
     fun testReadWriteLongZero() {
         testReadWriteLong(0.toByte())
@@ -56,15 +51,9 @@ class TypesTest : TestCase() {
 
     private fun testReadWriteLong(value: Byte) {
         val orig = ByteArray(8)
-        val dest = ByteArray(8)
-
-        setArray(orig, value, 0, 8)
-
-        val one = LEDataInputStream.readLong(orig, 0)
-        LEDataOutputStream.writeLong(one, dest, 0)
-
-        assertArrayEquals(orig, dest)
+        setArray(orig, value, 8)
 
+        assertArrayEquals(orig, longTo8Bytes(bytes64ToLong(orig)))
     }
 
     fun testReadWriteIntZero() {
@@ -81,24 +70,22 @@ class TypesTest : TestCase() {
 
     private fun testReadWriteInt(value: Byte) {
         val orig = ByteArray(4)
-        val dest = ByteArray(4)
 
         for (i in 0..3) {
             orig[i] = 0
         }
 
-        setArray(orig, value, 0, 4)
+        setArray(orig, value, 4)
 
-        val one = LEDataInputStream.readInt(orig, 0)
-
-        LEDataOutputStream.writeInt(one, dest, 0)
+        val one = bytes4ToInt(orig)
+        val dest = intTo4Bytes(one)
 
         assertArrayEquals(orig, dest)
 
     }
 
-    private fun setArray(buf: ByteArray, value: Byte, offset: Int, size: Int) {
-        for (i in offset until offset + size) {
+    private fun setArray(buf: ByteArray, value: Byte, size: Int) {
+        for (i in 0 until size) {
             buf[i] = value
         }
     }
@@ -109,11 +96,10 @@ class TypesTest : TestCase() {
         orig[0] = 0
         orig[1] = 1
 
-        val one = LEDataInputStream.readUShort(orig, 0)
-        val dest = LEDataOutputStream.writeUShortBuf(one)
+        val one = bytes2ToUShort(orig)
+        val dest = uShortTo2Bytes(one)
 
         assertArrayEquals(orig, dest)
-
     }
 
     fun testReadWriteShortMin() {
@@ -126,15 +112,12 @@ class TypesTest : TestCase() {
 
     private fun testReadWriteShort(value: Byte) {
         val orig = ByteArray(2)
-        val dest = ByteArray(2)
+        setArray(orig, value, 2)
 
-        setArray(orig, value, 0, 2)
-
-        val one = LEDataInputStream.readUShort(orig, 0)
-        LEDataOutputStream.writeUShort(one, dest, 0)
+        val one = bytes2ToUShort(orig)
+        val dest = uShortTo2Bytes(one)
 
         assertArrayEquals(orig, dest)
-
     }
 
     fun testReadWriteByteZero() {
@@ -150,16 +133,8 @@ class TypesTest : TestCase() {
     }
 
     private fun testReadWriteByte(value: Byte) {
-        val orig = ByteArray(1)
-        val dest = ByteArray(1)
-
-        setArray(orig, value, 0, 1)
-
-        val one = Types.readUByte(orig, 0)
-        Types.writeUByte(one, dest, 0)
-
-        assertArrayEquals(orig, dest)
-
+        val dest: Byte = uIntToByte(byteToUInt(value))
+        assert(value == dest)
     }
 
     fun testDate() {
@@ -168,27 +143,37 @@ class TypesTest : TestCase() {
         val expected = Calendar.getInstance()
         expected.set(2008, 1, 2, 3, 4, 5)
 
-        val buf = PwDate.writeTime(expected.time, cal)
         val actual = Calendar.getInstance()
-        actual.time = PwDate.readTime(buf, 0, cal)
+        dateTo5Bytes(expected.time, cal)?.let { buf ->
+            actual.time = bytes5ToDate(buf, cal).date
+        }
+
+        val jDate = DateInstant(System.currentTimeMillis())
+        val intermediate = DateInstant(jDate)
+        val cDate = bytes5ToDate(dateTo5Bytes(intermediate.date)!!)
 
         assertEquals("Year mismatch: ", 2008, actual.get(Calendar.YEAR))
         assertEquals("Month mismatch: ", 1, actual.get(Calendar.MONTH))
-        assertEquals("Day mismatch: ", 1, actual.get(Calendar.DAY_OF_MONTH))
+        assertEquals("Day mismatch: ", 2, actual.get(Calendar.DAY_OF_MONTH))
         assertEquals("Hour mismatch: ", 3, actual.get(Calendar.HOUR_OF_DAY))
         assertEquals("Minute mismatch: ", 4, actual.get(Calendar.MINUTE))
         assertEquals("Second mismatch: ", 5, actual.get(Calendar.SECOND))
+        assertTrue("jDate and intermediate not equal", jDate == intermediate)
+        assertTrue("jDate $jDate and cDate $cDate not equal", cDate == jDate)
     }
 
     fun testUUID() {
-        val rnd = Random()
         val bUUID = ByteArray(16)
-        rnd.nextBytes(bUUID)
+        Random().nextBytes(bUUID)
 
-        val uuid = Types.bytestoUUID(bUUID)
-        val eUUID = Types.UUIDtoBytes(uuid)
+        val uuid = bytes16ToUuid(bUUID)
+        val eUUID = uuidTo16Bytes(uuid)
+
+        val lUUID = bytes16ToUuid(bUUID)
+        val leUUID = uuidTo16Bytes(lUUID)
 
         assertArrayEquals("UUID match failed", bUUID, eUUID)
+        assertArrayEquals("UUID match failed", bUUID, leUUID)
     }
 
     @Throws(Exception::class)
@@ -199,8 +184,8 @@ class TypesTest : TestCase() {
         }
 
         val bos = ByteArrayOutputStream()
-        val leos = LEDataOutputStream(bos)
-        leos.writeLong(Types.ULONG_MAX_VALUE)
+        val leos = LittleEndianDataOutputStream(bos)
+        leos.writeLong(ULONG_MAX_VALUE)
         leos.close()
 
         val uLongMax = bos.toByteArray()

app/src/androidTest/java/com/kunzisoft/keepass/tests/crypto/CipherTest.kt

@@ -39,9 +39,8 @@ import junit.framework.TestCase
 
 import com.kunzisoft.keepass.crypto.CipherFactory
 import com.kunzisoft.keepass.crypto.engine.AesEngine
-import com.kunzisoft.keepass.crypto.engine.CipherEngine
 import com.kunzisoft.keepass.stream.BetterCipherInputStream
-import com.kunzisoft.keepass.stream.LEDataInputStream
+import com.kunzisoft.keepass.stream.LittleEndianDataInputStream
 
 class CipherTest : TestCase() {
     private val rand = Random()
@@ -93,7 +92,7 @@ class CipherTest : TestCase() {
 
         val bis = ByteArrayInputStream(secrettext)
         val cis = BetterCipherInputStream(bis, decrypt)
-        val lis = LEDataInputStream(cis)
+        val lis = LittleEndianDataInputStream(cis)
 
         val decrypttext = lis.readBytes(MESSAGE_LENGTH)
 

app/src/main/AndroidManifest.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="com.kunzisoft.keepass"
     android:installLocation="auto">
     <supports-screens
@@ -9,8 +10,8 @@
       android:anyDensity="true" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.USE_BIOMETRIC" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.VIBRATE"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
 
     <application
         android:label="@string/app_name"
@@ -20,7 +21,10 @@
         android:allowBackup="true"
         android:fullBackupContent="@xml/backup"
         android:backupAgent="com.kunzisoft.keepass.backup.SettingsBackupAgent"
-        android:theme="@style/KeepassDXStyle.Night">
+        android:largeHeap="true"
+        android:resizeableActivity="true"
+        android:theme="@style/KeepassDXStyle.Night"
+        tools:targetApi="n">
         <!-- TODO backup API Key -->
         <meta-data
             android:name="com.google.android.backup.api_key"
@@ -149,6 +153,10 @@
             android:name="com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService"
             android:enabled="true"
             android:exported="false" />
+        <service
+            android:name=".notifications.AttachmentFileNotificationService"
+            android:enabled="true"
+            android:exported="false" />
         <service
             android:name="com.kunzisoft.keepass.notifications.ClipboardEntryNotificationService"
             android:enabled="true"

app/src/main/java/com/kunzisoft/keepass/activities/EntryActivity.kt

@@ -22,6 +22,7 @@ import android.app.Activity
 import android.content.Intent
 import android.graphics.Color
 import android.graphics.drawable.ColorDrawable
+import android.net.Uri
 import android.os.Bundle
 import android.os.Handler
 import android.util.Log
@@ -36,24 +37,33 @@ import androidx.appcompat.widget.Toolbar
 import com.google.android.material.appbar.CollapsingToolbarLayout
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.helpers.ReadOnlyHelper
-import com.kunzisoft.keepass.activities.lock.LockingHideActivity
+import com.kunzisoft.keepass.activities.lock.LockingActivity
 import com.kunzisoft.keepass.database.element.Database
-import com.kunzisoft.keepass.database.element.EntryVersioned
-import com.kunzisoft.keepass.database.element.PwNodeId
+import com.kunzisoft.keepass.database.element.Entry
+import com.kunzisoft.keepass.database.element.node.NodeId
 import com.kunzisoft.keepass.education.EntryActivityEducation
 import com.kunzisoft.keepass.icons.assignDatabaseIcon
 import com.kunzisoft.keepass.magikeyboard.MagikIME
+import com.kunzisoft.keepass.model.AttachmentState
+import com.kunzisoft.keepass.model.EntryAttachment
+import com.kunzisoft.keepass.notifications.AttachmentFileNotificationService
 import com.kunzisoft.keepass.notifications.ClipboardEntryNotificationService
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_DELETE_ENTRY_HISTORY
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_RESTORE_ENTRY_HISTORY
 import com.kunzisoft.keepass.settings.PreferencesUtil
 import com.kunzisoft.keepass.settings.SettingsAutofillActivity
+import com.kunzisoft.keepass.tasks.AttachmentFileBinderManager
 import com.kunzisoft.keepass.timeout.ClipboardHelper
 import com.kunzisoft.keepass.timeout.TimeoutHelper
 import com.kunzisoft.keepass.utils.MenuUtil
 import com.kunzisoft.keepass.utils.UriUtil
+import com.kunzisoft.keepass.utils.createDocument
+import com.kunzisoft.keepass.utils.onCreateDocumentResult
 import com.kunzisoft.keepass.view.EntryContentsView
 import java.util.*
+import kotlin.collections.HashMap
 
-class EntryActivity : LockingHideActivity() {
+class EntryActivity : LockingActivity() {
 
     private var collapsingToolbarLayout: CollapsingToolbarLayout? = null
     private var titleIconView: ImageView? = null
@@ -64,11 +74,17 @@ class EntryActivity : LockingHideActivity() {
 
     private var mDatabase: Database? = null
 
-    private var mEntry: EntryVersioned? = null
+    private var mEntry: Entry? = null
+
     private var mIsHistory: Boolean = false
+    private var mEntryLastVersion: Entry? = null
+    private var mEntryHistoryPosition: Int = -1
 
     private var mShowPassword: Boolean = false
 
+    private var mAttachmentFileBinderManager: AttachmentFileBinderManager? = null
+    private var mAttachmentsToDownload: HashMap<Int, EntryAttachment> = HashMap()
+
     private var clipboardHelper: ClipboardHelper? = null
     private var firstLaunchOfActivity: Boolean = false
 
@@ -108,6 +124,21 @@ class EntryActivity : LockingHideActivity() {
         // Init the clipboard helper
         clipboardHelper = ClipboardHelper(this)
         firstLaunchOfActivity = true
+
+        // Init attachment service binder manager
+        mAttachmentFileBinderManager = AttachmentFileBinderManager(this)
+
+        mProgressDialogThread?.onActionFinish = { actionTask, result ->
+            when (actionTask) {
+                ACTION_DATABASE_RESTORE_ENTRY_HISTORY,
+                ACTION_DATABASE_DELETE_ENTRY_HISTORY -> {
+                    // Close the current activity after an history action
+                    if (result.isSuccess)
+                        finish()
+                }
+            }
+            // TODO Visual error for entry history
+        }
     }
 
     override fun onResume() {
@@ -115,13 +146,15 @@ class EntryActivity : LockingHideActivity() {
 
         // Get Entry from UUID
         try {
-            val keyEntry: PwNodeId<UUID> = intent.getParcelableExtra(KEY_ENTRY)
+            val keyEntry: NodeId<UUID> = intent.getParcelableExtra(KEY_ENTRY)
             mEntry = mDatabase?.getEntryById(keyEntry)
+            mEntryLastVersion = mEntry
         } catch (e: ClassCastException) {
             Log.e(TAG, "Unable to retrieve the entry key")
         }
 
-        val historyPosition = intent.getIntExtra(KEY_ENTRY_HISTORY_POSITION, -1)
+        val historyPosition = intent.getIntExtra(KEY_ENTRY_HISTORY_POSITION, mEntryHistoryPosition)
+        mEntryHistoryPosition = historyPosition
         if (historyPosition >= 0) {
             mIsHistory = true
             mEntry = mEntry?.getHistory()?.get(historyPosition)
@@ -155,10 +188,25 @@ class EntryActivity : LockingHideActivity() {
             }
         }
 
+        mAttachmentFileBinderManager?.apply {
+            registerProgressTask()
+            onActionTaskListener = object : AttachmentFileNotificationService.ActionTaskListener {
+                override fun onAttachmentProgress(fileUri: Uri, attachment: EntryAttachment) {
+                    entryContentsView?.updateAttachmentDownloadProgress(attachment)
+                }
+            }
+        }
+
         firstLaunchOfActivity = false
     }
 
-    private fun fillEntryDataInContentsView(entry: EntryVersioned) {
+    override fun onPause() {
+        mAttachmentFileBinderManager?.unregisterProgressTask()
+
+        super.onPause()
+    }
+
+    private fun fillEntryDataInContentsView(entry: Entry) {
 
         val database = Database.getInstance()
         database.startManageEntry(entry)
@@ -265,6 +313,27 @@ class EntryActivity : LockingHideActivity() {
         }
         entryContentsView?.setHiddenPasswordStyle(!mShowPassword)
 
+        // Manage attachments
+        val attachments = entry.getAttachments()
+        val showAttachmentsView = attachments.isNotEmpty()
+        entryContentsView?.showAttachments(showAttachmentsView)
+        if (showAttachmentsView) {
+            entryContentsView?.assignAttachments(attachments)
+            entryContentsView?.onAttachmentClick { attachmentItem, _ ->
+                when (attachmentItem.downloadState) {
+                    AttachmentState.NULL, AttachmentState.ERROR, AttachmentState.COMPLETE -> {
+                        createDocument(this, attachmentItem.name)?.let { requestCode ->
+                            mAttachmentsToDownload[requestCode] = attachmentItem
+                        }
+                    }
+                    else -> {
+                        // TODO Stop download
+                    }
+                }
+            }
+        }
+        entryContentsView?.refreshAttachments()
+
         // Assign dates
         entryContentsView?.assignCreationDate(entry.creationTime)
         entryContentsView?.assignModificationDate(entry.lastModificationTime)
@@ -276,9 +345,6 @@ class EntryActivity : LockingHideActivity() {
             entryContentsView?.assignExpiresDate(getString(R.string.never))
         }
 
-        // Assign special data
-        entryContentsView?.assignUUID(entry.nodeId.id)
-
         // Manage history
         historyView?.visibility = if (mIsHistory) View.VISIBLE else View.GONE
         if (mIsHistory) {
@@ -287,21 +353,26 @@ class EntryActivity : LockingHideActivity() {
             taColorAccent.recycle()
         }
         val entryHistory = entry.getHistory()
-        // isMainEntry = not an history
+        // TODO isMainEntry = not an history
         val showHistoryView = entryHistory.isNotEmpty()
         entryContentsView?.showHistory(showHistoryView)
         if (showHistoryView) {
             entryContentsView?.assignHistory(entryHistory)
             entryContentsView?.onHistoryClick { historyItem, position ->
-                launch(this, historyItem, true, position)
+                launch(this, historyItem, mReadOnly, position)
             }
         }
+        entryContentsView?.refreshHistory()
+
+        // Assign special data
+        entryContentsView?.assignUUID(entry.nodeId.id)
 
         database.stopManageEntry(entry)
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
+
         when (requestCode) {
             EntryEditActivity.ADD_OR_UPDATE_ENTRY_REQUEST_CODE ->
                 // Not directly get the entry from intent data but from database
@@ -309,6 +380,15 @@ class EntryActivity : LockingHideActivity() {
                     fillEntryDataInContentsView(it)
                 }
         }
+
+        onCreateDocumentResult(requestCode, resultCode, data) { createdFileUri ->
+            if (createdFileUri != null) {
+                mAttachmentsToDownload[requestCode]?.let { attachmentToDownload ->
+                    mAttachmentFileBinderManager
+                            ?.startDownloadAttachment(createdFileUri, attachmentToDownload)
+                }
+            }
+        }
     }
 
     private fun changeShowPasswordIcon(togglePassword: MenuItem?) {
@@ -327,9 +407,12 @@ class EntryActivity : LockingHideActivity() {
         val inflater = menuInflater
         MenuUtil.contributionMenuInflater(inflater, menu)
         inflater.inflate(R.menu.entry, menu)
-        inflater.inflate(R.menu.database_lock, menu)
-
-        if (mReadOnly) {
+        inflater.inflate(R.menu.database, menu)
+        if (mIsHistory && !mReadOnly) {
+            inflater.inflate(R.menu.entry_history, menu)
+        }
+        if (mIsHistory || mReadOnly) {
+            menu.findItem(R.id.menu_save_database)?.isVisible = false
             menu.findItem(R.id.menu_edit)?.isVisible = false
         }
 
@@ -398,21 +481,18 @@ class EntryActivity : LockingHideActivity() {
                 MenuUtil.onContributionItemSelected(this)
                 return true
             }
-
             R.id.menu_toggle_pass -> {
                 mShowPassword = !mShowPassword
                 changeShowPasswordIcon(item)
                 entryContentsView?.setHiddenPasswordStyle(!mShowPassword)
                 return true
             }
-
             R.id.menu_edit -> {
                 mEntry?.let {
                     EntryEditActivity.launch(this@EntryActivity, it)
                 }
                 return true
             }
-
             R.id.menu_goto_url -> {
                 var url: String = mEntry?.url ?: ""
 
@@ -422,18 +502,33 @@ class EntryActivity : LockingHideActivity() {
                 }
 
                 UriUtil.gotoUrl(this, url)
-
                 return true
             }
-
+            R.id.menu_restore_entry_history -> {
+                mEntryLastVersion?.let { mainEntry ->
+                    mProgressDialogThread?.startDatabaseRestoreEntryHistory(
+                            mainEntry,
+                            mEntryHistoryPosition,
+                            !mReadOnly && mAutoSaveEnable)
+                }
+            }
+            R.id.menu_delete_entry_history -> {
+                mEntryLastVersion?.let { mainEntry ->
+                    mProgressDialogThread?.startDatabaseDeleteEntryHistory(
+                            mainEntry,
+                            mEntryHistoryPosition,
+                            !mReadOnly && mAutoSaveEnable)
+                }
+            }
             R.id.menu_lock -> {
                 lockAndExit()
                 return true
             }
-
+            R.id.menu_save_database -> {
+                mProgressDialogThread?.startDatabaseSave(!mReadOnly)
+            }
             android.R.id.home -> finish() // close this activity and return to preview activity (if there is any)
         }
-
         return super.onOptionsItemSelected(item)
     }
 
@@ -455,7 +550,7 @@ class EntryActivity : LockingHideActivity() {
         const val KEY_ENTRY = "KEY_ENTRY"
         const val KEY_ENTRY_HISTORY_POSITION = "KEY_ENTRY_HISTORY_POSITION"
 
-        fun launch(activity: Activity, entry: EntryVersioned, readOnly: Boolean, historyPosition: Int? = null) {
+        fun launch(activity: Activity, entry: Entry, readOnly: Boolean, historyPosition: Int? = null) {
             if (TimeoutHelper.checkTimeAndLockIfTimeout(activity)) {
                 val intent = Intent(activity, EntryActivity::class.java)
                 intent.putExtra(KEY_ENTRY, entry.nodeId)

app/src/main/java/com/kunzisoft/keepass/activities/EntryEditActivity.kt

@@ -28,13 +28,16 @@ import android.view.MenuItem
 import android.view.View
 import android.widget.ScrollView
 import androidx.appcompat.widget.Toolbar
+import androidx.coordinatorlayout.widget.CoordinatorLayout
+import com.google.android.material.snackbar.Snackbar
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.dialogs.SetOTPDialogFragment
 import com.kunzisoft.keepass.activities.dialogs.GeneratePasswordDialogFragment
 import com.kunzisoft.keepass.activities.dialogs.IconPickerDialogFragment
-import com.kunzisoft.keepass.activities.lock.LockingHideActivity
-import com.kunzisoft.keepass.database.action.ProgressDialogThread
+import com.kunzisoft.keepass.activities.lock.LockingActivity
 import com.kunzisoft.keepass.database.element.*
+import com.kunzisoft.keepass.database.element.icon.IconImage
+import com.kunzisoft.keepass.database.element.node.NodeId
 import com.kunzisoft.keepass.education.EntryEditActivityEducation
 import com.kunzisoft.keepass.notifications.ClipboardEntryNotificationService
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_CREATE_ENTRY_TASK
@@ -46,9 +49,10 @@ import com.kunzisoft.keepass.settings.PreferencesUtil
 import com.kunzisoft.keepass.timeout.TimeoutHelper
 import com.kunzisoft.keepass.utils.MenuUtil
 import com.kunzisoft.keepass.view.EntryEditContentsView
+import com.kunzisoft.keepass.view.asError
 import java.util.*
 
-class EntryEditActivity : LockingHideActivity(),
+class EntryEditActivity : LockingActivity(),
         IconPickerDialogFragment.IconPickerListener,
         GeneratePasswordDialogFragment.GeneratePasswordListener,
         SetOTPDialogFragment.CreateOtpListener {
@@ -56,20 +60,18 @@ class EntryEditActivity : LockingHideActivity(),
     private var mDatabase: Database? = null
 
     // Refs of an entry and group in database, are not modifiable
-    private var mEntry: EntryVersioned? = null
-    private var mParent: GroupVersioned? = null
+    private var mEntry: Entry? = null
+    private var mParent: Group? = null
     // New or copy of mEntry in the database to be modifiable
-    private var mNewEntry: EntryVersioned? = null
+    private var mNewEntry: Entry? = null
     private var mIsNew: Boolean = false
 
     // Views
+    private var coordinatorLayout: CoordinatorLayout? = null
     private var scrollView: ScrollView? = null
     private var entryEditContentsView: EntryEditContentsView? = null
     private var saveView: View? = null
 
-    // Dialog thread
-    private var progressDialogThread: ProgressDialogThread? = null
-
     // Education
     private var entryEditActivityEducation: EntryEditActivityEducation? = null
 
@@ -83,6 +85,8 @@ class EntryEditActivity : LockingHideActivity(),
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
         supportActionBar?.setDisplayShowHomeEnabled(true)
 
+        coordinatorLayout = findViewById(R.id.entry_edit_coordinator_layout)
+
         scrollView = findViewById(R.id.entry_edit_scroll)
         scrollView?.scrollBarStyle = View.SCROLLBARS_INSIDE_INSET
 
@@ -98,7 +102,7 @@ class EntryEditActivity : LockingHideActivity(),
         mDatabase = Database.getInstance()
 
         // Entry is retrieve, it's an entry to update
-        intent.getParcelableExtra<PwNodeId<UUID>>(KEY_ENTRY)?.let {
+        intent.getParcelableExtra<NodeId<UUID>>(KEY_ENTRY)?.let {
             mIsNew = false
             // Create an Entry copy to modify from the database entry
             mEntry = mDatabase?.getEntryById(it)
@@ -118,7 +122,7 @@ class EntryEditActivity : LockingHideActivity(),
                     || !savedInstanceState.containsKey(KEY_NEW_ENTRY)) {
                 mEntry?.let { entry ->
                     // Create a copy to modify
-                    mNewEntry = EntryVersioned(entry).also { newEntry ->
+                    mNewEntry = Entry(entry).also { newEntry ->
                         // WARNING Remove the parent to keep memory with parcelable
                         newEntry.removeParent()
                     }
@@ -127,7 +131,7 @@ class EntryEditActivity : LockingHideActivity(),
         }
 
         // Parent is retrieve, it's a new entry to create
-        intent.getParcelableExtra<PwNodeId<*>>(KEY_PARENT)?.let {
+        intent.getParcelableExtra<NodeId<*>>(KEY_PARENT)?.let {
             mIsNew = true
             // Create an empty new entry
             if (savedInstanceState == null
@@ -176,7 +180,7 @@ class EntryEditActivity : LockingHideActivity(),
         entryEditActivityEducation = EntryEditActivityEducation(this)
 
         // Create progress dialog
-        progressDialogThread = ProgressDialogThread(this) { actionTask, result ->
+        mProgressDialogThread?.onActionFinish = { actionTask, result ->
             when (actionTask) {
                 ACTION_DATABASE_CREATE_ENTRY_TASK,
                 ACTION_DATABASE_UPDATE_ENTRY_TASK -> {
@@ -184,10 +188,19 @@ class EntryEditActivity : LockingHideActivity(),
                         finish()
                 }
             }
+
+            // Show error
+            if (!result.isSuccess) {
+                result.message?.let { resultMessage ->
+                    Snackbar.make(coordinatorLayout!!,
+                            resultMessage,
+                            Snackbar.LENGTH_LONG).asError().show()
+                }
+            }
         }
     }
 
-    private fun populateViewsWithEntry(newEntry: EntryVersioned) {
+    private fun populateViewsWithEntry(newEntry: Entry) {
         // Don't start the field reference manager, we want to see the raw ref
         mDatabase?.stopManageEntry(newEntry)
 
@@ -209,7 +222,7 @@ class EntryEditActivity : LockingHideActivity(),
         }
     }
 
-    private fun populateEntryWithViews(newEntry: EntryVersioned) {
+    private fun populateEntryWithViews(newEntry: Entry) {
 
         mDatabase?.startManageEntry(newEntry)
 
@@ -231,7 +244,7 @@ class EntryEditActivity : LockingHideActivity(),
         mDatabase?.stopManageEntry(newEntry)
     }
 
-    private fun temporarilySaveAndShowSelectedIcon(icon: PwIcon) {
+    private fun temporarilySaveAndShowSelectedIcon(icon: IconImage) {
         mNewEntry?.icon = icon
         mDatabase?.drawFactory?.let { iconDrawFactory ->
             entryEditContentsView?.setIcon(iconDrawFactory, icon)
@@ -265,26 +278,26 @@ class EntryEditActivity : LockingHideActivity(),
                 // WARNING Add the parent previously deleted
                 newEntry.parent = mEntry?.parent
                 // Build info
-                newEntry.lastAccessTime = PwDate()
-                newEntry.lastModificationTime = PwDate()
+                newEntry.lastAccessTime = DateInstant()
+                newEntry.lastModificationTime = DateInstant()
 
                 populateEntryWithViews(newEntry)
 
                 // Open a progress dialog and save entry
                 if (mIsNew) {
                     mParent?.let { parent ->
-                        progressDialogThread?.startDatabaseCreateEntry(
+                        mProgressDialogThread?.startDatabaseCreateEntry(
                                 newEntry,
                                 parent,
-                                !mReadOnly
+                                !mReadOnly && mAutoSaveEnable
                         )
                     }
                 } else {
                     mEntry?.let { oldEntry ->
-                        progressDialogThread?.startDatabaseUpdateEntry(
+                        mProgressDialogThread?.startDatabaseUpdateEntry(
                                 oldEntry,
                                 newEntry,
-                                !mReadOnly
+                                !mReadOnly && mAutoSaveEnable
                         )
                     }
                 }
@@ -292,25 +305,16 @@ class EntryEditActivity : LockingHideActivity(),
         }
     }
 
-    override fun onResume() {
-        super.onResume()
-
-        progressDialogThread?.registerProgressTask()
-    }
-
-    override fun onPause() {
-        progressDialogThread?.unregisterProgressTask()
-
-        super.onPause()
-    }
-
     override fun onCreateOptionsMenu(menu: Menu): Boolean {
         super.onCreateOptionsMenu(menu)
 
         val inflater = menuInflater
-        inflater.inflate(R.menu.database_lock, menu)
+        inflater.inflate(R.menu.database, menu)
+        // Save database not needed here
+        menu.findItem(R.id.menu_save_database)?.isVisible = false
         MenuUtil.contributionMenuInflater(inflater, menu)
-        inflater.inflate(R.menu.edit_entry, menu)
+        if (mDatabase?.allowOTP == true)
+            inflater.inflate(R.menu.entry_otp, menu)
 
         entryEditActivityEducation?.let {
             Handler().post { performedNextEducation(it) }
@@ -351,12 +355,13 @@ class EntryEditActivity : LockingHideActivity(),
                 lockAndExit()
                 return true
             }
-
+            R.id.menu_save_database -> {
+                mProgressDialogThread?.startDatabaseSave(!mReadOnly)
+            }
             R.id.menu_contribute -> {
                 MenuUtil.onContributionItemSelected(this)
                 return true
             }
-
             R.id.menu_add_otp -> {
                 // Retrieve the current otpElement if exists
                 // and open the dialog to set up the OTP
@@ -364,7 +369,6 @@ class EntryEditActivity : LockingHideActivity(),
                         .show(supportFragmentManager, "addOTPDialog")
                 return true
             }
-
             android.R.id.home -> finish()
         }
 
@@ -452,7 +456,7 @@ class EntryEditActivity : LockingHideActivity(),
          * @param activity from activity
          * @param pwEntry Entry to update
          */
-        fun launch(activity: Activity, pwEntry: EntryVersioned) {
+        fun launch(activity: Activity, pwEntry: Entry) {
             if (TimeoutHelper.checkTimeAndLockIfTimeout(activity)) {
                 val intent = Intent(activity, EntryEditActivity::class.java)
                 intent.putExtra(KEY_ENTRY, pwEntry.nodeId)
@@ -466,7 +470,7 @@ class EntryEditActivity : LockingHideActivity(),
          * @param activity from activity
          * @param pwGroup Group who will contains new entry
          */
-        fun launch(activity: Activity, pwGroup: GroupVersioned) {
+        fun launch(activity: Activity, pwGroup: Group) {
             if (TimeoutHelper.checkTimeAndLockIfTimeout(activity)) {
                 val intent = Intent(activity, EntryEditActivity::class.java)
                 intent.putExtra(KEY_PARENT, pwGroup.nodeId)

app/src/main/java/com/kunzisoft/keepass/activities/FileDatabaseSelectActivity.kt

@@ -42,7 +42,6 @@ import androidx.recyclerview.widget.SimpleItemAnimator
 import com.google.android.material.snackbar.Snackbar
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.dialogs.AssignMasterKeyDialogFragment
-import com.kunzisoft.keepass.activities.dialogs.BrowserDialogFragment
 import com.kunzisoft.keepass.activities.helpers.EntrySelectionHelper
 import com.kunzisoft.keepass.activities.helpers.OpenFileHelper
 import com.kunzisoft.keepass.activities.stylish.StylishActivity
@@ -53,8 +52,7 @@ import com.kunzisoft.keepass.database.action.ProgressDialogThread
 import com.kunzisoft.keepass.database.element.Database
 import com.kunzisoft.keepass.education.FileDatabaseSelectActivityEducation
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_CREATE_TASK
-import com.kunzisoft.keepass.utils.MenuUtil
-import com.kunzisoft.keepass.utils.UriUtil
+import com.kunzisoft.keepass.utils.*
 import com.kunzisoft.keepass.view.asError
 import kotlinx.android.synthetic.main.activity_file_selection.*
 import java.io.FileNotFoundException
@@ -76,7 +74,7 @@ class FileDatabaseSelectActivity : StylishActivity(),
 
     private var mOpenFileHelper: OpenFileHelper? = null
 
-    private var progressDialogThread: ProgressDialogThread? = null
+    private var mProgressDialogThread: ProgressDialogThread? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -92,17 +90,14 @@ class FileDatabaseSelectActivity : StylishActivity(),
 
         // Create button
         createButtonView = findViewById(R.id.create_database_button)
-        if (Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
-                    addCategory(Intent.CATEGORY_OPENABLE)
-                    type = "application/x-keepass"
-                }.resolveActivity(packageManager) == null) {
-            // No Activity found that can handle this intent.
-            createButtonView?.visibility = View.GONE
-        }
-        else{
+        if (allowCreateDocumentByStorageAccessFramework(packageManager)) {
             // There is an activity which can handle this intent.
             createButtonView?.visibility = View.VISIBLE
         }
+        else{
+            // No Activity found that can handle this intent.
+            createButtonView?.visibility = View.GONE
+        }
 
         createButtonView?.setOnClickListener { createNewFile() }
 
@@ -163,13 +158,15 @@ class FileDatabaseSelectActivity : StylishActivity(),
         }
 
         // Attach the dialog thread to this activity
-        progressDialogThread = ProgressDialogThread(this) { actionTask, _ ->
+        mProgressDialogThread = ProgressDialogThread(this).apply {
+            onActionFinish = { actionTask, _ ->
                 when (actionTask) {
                     ACTION_DATABASE_CREATE_TASK -> {
                         // TODO Check
                         // mAdapterDatabaseHistory?.notifyDataSetChanged()
                         // updateFileListVisibility()
-                    GroupActivity.launch(this)
+                        GroupActivity.launch(this@FileDatabaseSelectActivity)
+                    }
                 }
             }
         }
@@ -180,18 +177,8 @@ class FileDatabaseSelectActivity : StylishActivity(),
      */
     @SuppressLint("InlinedApi")
     private fun createNewFile() {
-        try {
-            startActivityForResult(Intent(
-                    Intent.ACTION_CREATE_DOCUMENT).apply {
-                        addCategory(Intent.CATEGORY_OPENABLE)
-                        type = "application/x-keepass"
-                        putExtra(Intent.EXTRA_TITLE, getString(R.string.database_file_name_default) +
-                                getString(R.string.database_file_extension_default))
-                    },
-                    CREATE_FILE_REQUEST_CODE)
-        } catch (e: Exception) {
-            BrowserDialogFragment().show(supportFragmentManager, "browserDialog")
-        }
+        createDocument(this, getString(R.string.database_file_name_default) +
+                getString(R.string.database_file_extension_default), "application/x-keepass")
     }
 
     private fun fileNoFoundAction(e: FileNotFoundException) {
@@ -296,12 +283,12 @@ class FileDatabaseSelectActivity : StylishActivity(),
         }
 
         // Register progress task
-        progressDialogThread?.registerProgressTask()
+        mProgressDialogThread?.registerProgressTask()
     }
 
     override fun onPause() {
         // Unregister progress task
-        progressDialogThread?.unregisterProgressTask()
+        mProgressDialogThread?.unregisterProgressTask()
 
         super.onPause()
     }
@@ -329,7 +316,7 @@ class FileDatabaseSelectActivity : StylishActivity(),
             mDatabaseFileUri?.let { databaseUri ->
 
                 // Create the new database
-                progressDialogThread?.startDatabaseCreate(
+                mProgressDialogThread?.startDatabaseCreate(
                         databaseUri,
                         masterPasswordChecked,
                         masterPassword,
@@ -365,8 +352,8 @@ class FileDatabaseSelectActivity : StylishActivity(),
         }
 
         // Retrieve the created URI from the file manager
-        if (requestCode == CREATE_FILE_REQUEST_CODE && resultCode == Activity.RESULT_OK) {
-            mDatabaseFileUri = data?.data
+        onCreateDocumentResult(requestCode, resultCode, data) { databaseFileCreatedUri ->
+            mDatabaseFileUri = databaseFileCreatedUri
             if (mDatabaseFileUri != null) {
                 AssignMasterKeyDialogFragment.getInstance(true)
                         .show(supportFragmentManager, "passwordDialog")
@@ -425,8 +412,6 @@ class FileDatabaseSelectActivity : StylishActivity(),
         private const val EXTRA_STAY = "EXTRA_STAY"
         private const val EXTRA_DATABASE_URI = "EXTRA_DATABASE_URI"
 
-        private const val CREATE_FILE_REQUEST_CODE = 3853
-
         /*
          * -------------------------
          * No Standard Launch, pass by PasswordActivity

app/src/main/java/com/kunzisoft/keepass/activities/GroupActivity.kt

@@ -42,18 +42,23 @@ import androidx.coordinatorlayout.widget.CoordinatorLayout
 import androidx.fragment.app.FragmentManager
 import com.google.android.material.snackbar.Snackbar
 import com.kunzisoft.keepass.R
+import com.kunzisoft.keepass.activities.dialogs.DeleteNodesDialogFragment
 import com.kunzisoft.keepass.activities.dialogs.GroupEditDialogFragment
 import com.kunzisoft.keepass.activities.dialogs.IconPickerDialogFragment
-import com.kunzisoft.keepass.activities.dialogs.ReadOnlyDialog
 import com.kunzisoft.keepass.activities.dialogs.SortDialogFragment
 import com.kunzisoft.keepass.activities.helpers.EntrySelectionHelper
 import com.kunzisoft.keepass.activities.helpers.ReadOnlyHelper
 import com.kunzisoft.keepass.activities.lock.LockingActivity
 import com.kunzisoft.keepass.adapters.SearchEntryCursorAdapter
 import com.kunzisoft.keepass.autofill.AutofillHelper
-import com.kunzisoft.keepass.database.SortNodeEnum
-import com.kunzisoft.keepass.database.action.ProgressDialogThread
-import com.kunzisoft.keepass.database.element.*
+import com.kunzisoft.keepass.database.element.Database
+import com.kunzisoft.keepass.database.element.Entry
+import com.kunzisoft.keepass.database.element.Group
+import com.kunzisoft.keepass.database.element.SortNodeEnum
+import com.kunzisoft.keepass.database.element.icon.IconImage
+import com.kunzisoft.keepass.database.element.node.Node
+import com.kunzisoft.keepass.database.element.node.NodeId
+import com.kunzisoft.keepass.database.element.node.Type
 import com.kunzisoft.keepass.education.GroupActivityEducation
 import com.kunzisoft.keepass.icons.assignDatabaseIcon
 import com.kunzisoft.keepass.magikeyboard.MagikIME
@@ -77,6 +82,7 @@ class GroupActivity : LockingActivity(),
         IconPickerDialogFragment.IconPickerListener,
         ListNodesFragment.NodeClickListener,
         ListNodesFragment.NodesActionMenuListener,
+        DeleteNodesDialogFragment.DeleteNodeListener,
         ListNodesFragment.OnScrollListener,
         SortDialogFragment.SortSelectionListener {
 
@@ -96,14 +102,10 @@ class GroupActivity : LockingActivity(),
     private var mListNodesFragment: ListNodesFragment? = null
     private var mCurrentGroupIsASearch: Boolean = false
 
-    private var progressDialogThread: ProgressDialogThread? = null
-
     // Nodes
-    private var mRootGroup: GroupVersioned? = null
-    private var mCurrentGroup: GroupVersioned? = null
-    private var mOldGroupToUpdate: GroupVersioned? = null
-    // TODO private var mNodeToCopy: NodeVersioned? = null
-    // TODO private var mNodeToMove: NodeVersioned? = null
+    private var mRootGroup: Group? = null
+    private var mCurrentGroup: Group? = null
+    private var mOldGroupToUpdate: Group? = null
 
     private var mSearchSuggestionAdapter: SearchEntryCursorAdapter? = null
 
@@ -134,14 +136,6 @@ class GroupActivity : LockingActivity(),
         toolbar?.title = ""
         setSupportActionBar(toolbar)
 
-        /*
-        toolbarAction?.setNavigationOnClickListener {
-            toolbarAction?.collapse()
-            mNodeToCopy = null
-            mNodeToMove = null
-        }
-        */
-
         // Focus view to reinitialize timeout
         resetAppTimeoutWhenViewFocusedOrChanged(addNodeButtonView)
 
@@ -207,13 +201,13 @@ class GroupActivity : LockingActivity(),
             mSearchSuggestionAdapter = SearchEntryCursorAdapter(this, database)
 
             // Init dialog thread
-            progressDialogThread = ProgressDialogThread(this) { actionTask, result ->
+            mProgressDialogThread?.onActionFinish = { actionTask, result ->
 
-                var oldNodes: List<NodeVersioned> = ArrayList()
+                var oldNodes: List<Node> = ArrayList()
                 result.data?.getBundle(OLD_NODES_KEY)?.let { oldNodesBundle ->
                     oldNodes = getListNodesFromBundle(database, oldNodesBundle)
                 }
-                var newNodes: List<NodeVersioned> = ArrayList()
+                var newNodes: List<Node> = ArrayList()
                 result.data?.getBundle(NEW_NODES_KEY)?.let { newNodesBundle ->
                     newNodes = getListNodesFromBundle(database, newNodesBundle)
                 }
@@ -234,34 +228,35 @@ class GroupActivity : LockingActivity(),
                     ACTION_DATABASE_DELETE_NODES_TASK -> {
                         if (result.isSuccess) {
 
-                            // Rebuild all the list the avoid bug when delete node from db sort
-                            if (PreferencesUtil.getListSort(this@GroupActivity) == SortNodeEnum.DB) {
+                            // Rebuild all the list to avoid bug when delete node from sort
                             mListNodesFragment?.rebuildList()
-                            } else {
-                                // Use the old Nodes / entries unchanged with the old parent
-                                mListNodesFragment?.removeNodes(oldNodes)
-                            }
 
                             // Add trash in views list if it doesn't exists
                             if (database.isRecycleBinEnabled) {
                                 val recycleBin = database.recycleBin
-                                if (mCurrentGroup != null && recycleBin != null
-                                        && mCurrentGroup!!.parent == null
-                                        && mCurrentGroup != recycleBin) {
-                                    if (mListNodesFragment?.contains(recycleBin) == true)
+                                val currentGroup = mCurrentGroup
+                                if (currentGroup != null && recycleBin != null
+                                        && currentGroup != recycleBin) {
+                                    // Recycle bin already here, simply update it
+                                    if (mListNodesFragment?.contains(recycleBin) == true) {
                                         mListNodesFragment?.updateNode(recycleBin)
-                                    else
+                                    }
+                                    // Recycle bin not here, verify if parents are similar to add it
+                                    else if (currentGroup == recycleBin.parent) {
                                         mListNodesFragment?.addNode(recycleBin)
                                     }
                                 }
                             }
                         }
                     }
+                }
 
                 if (!result.isSuccess) {
-                    result.exception?.errorId?.let { errorId ->
                     coordinatorLayout?.let { coordinatorLayout ->
+                        result.exception?.errorId?.let { errorId ->
                             Snackbar.make(coordinatorLayout, errorId, Snackbar.LENGTH_LONG).asError().show()
+                        } ?: result.message?.let { message ->
+                            Snackbar.make(coordinatorLayout, message, Snackbar.LENGTH_LONG).asError().show()
                         }
                     }
                 }
@@ -291,7 +286,7 @@ class GroupActivity : LockingActivity(),
         }
     }
 
-    private fun openSearchGroup(group: GroupVersioned?) {
+    private fun openSearchGroup(group: Group?) {
         // Delete the previous search fragment
         val searchFragment = supportFragmentManager.findFragmentByTag(SEARCH_FRAGMENT_TAG)
         if (searchFragment != null) {
@@ -303,11 +298,11 @@ class GroupActivity : LockingActivity(),
         openGroup(group, true)
     }
 
-    private fun openChildGroup(group: GroupVersioned) {
+    private fun openChildGroup(group: Group) {
         openGroup(group, false)
     }
 
-    private fun openGroup(group: GroupVersioned?, isASearch: Boolean) {
+    private fun openGroup(group: Group?, isASearch: Boolean) {
         // Check TimeoutHelper
         TimeoutHelper.checkTimeAndLockIfTimeoutOrResetTimeout(this) {
             // Open a group in a new fragment
@@ -347,7 +342,7 @@ class GroupActivity : LockingActivity(),
         super.onSaveInstanceState(outState)
     }
 
-    private fun retrieveCurrentGroup(intent: Intent, savedInstanceState: Bundle?): GroupVersioned? {
+    private fun retrieveCurrentGroup(intent: Intent, savedInstanceState: Bundle?): Group? {
 
         // Force read only if the database is like that
         mReadOnly = mDatabase?.isReadOnly == true || mReadOnly
@@ -358,7 +353,7 @@ class GroupActivity : LockingActivity(),
         }
         // else a real group
         else {
-            var pwGroupId: PwNodeId<*>? = null
+            var pwGroupId: NodeId<*>? = null
             if (savedInstanceState != null && savedInstanceState.containsKey(GROUP_ID_KEY)) {
                 pwGroupId = savedInstanceState.getParcelable(GROUP_ID_KEY)
             } else {
@@ -367,7 +362,7 @@ class GroupActivity : LockingActivity(),
             }
 
             Log.w(TAG, "Creating tree view")
-            val currentGroup: GroupVersioned?
+            val currentGroup: Group?
             currentGroup = if (pwGroupId == null) {
                 mRootGroup
             } else {
@@ -440,12 +435,8 @@ class GroupActivity : LockingActivity(),
             val addGroupEnabled = !mReadOnly && !mCurrentGroupIsASearch
             var addEntryEnabled = !mReadOnly && !mCurrentGroupIsASearch
             mCurrentGroup?.let {
-                val isRoot = it == mRootGroup
                 if (!it.allowAddEntryIfIsRoot())
-                    addEntryEnabled = !isRoot && addEntryEnabled
-                if (isRoot) {
-                    showWarnings()
-                }
+                    addEntryEnabled = it != mRootGroup && addEntryEnabled
             }
             enableAddGroup(addGroupEnabled)
             enableAddEntry(addEntryEnabled)
@@ -458,7 +449,7 @@ class GroupActivity : LockingActivity(),
     private fun refreshNumberOfChildren() {
         numberChildrenView?.apply {
             if (PreferencesUtil.showNumberEntries(context)) {
-                text = mCurrentGroup?.getChildEntries(true)?.size?.toString() ?: ""
+                text = mCurrentGroup?.getChildEntries(*Group.ChildFilter.getDefaults(context))?.size?.toString() ?: ""
                 visibility = View.VISIBLE
             } else {
                 visibility = View.GONE
@@ -470,16 +461,16 @@ class GroupActivity : LockingActivity(),
         addNodeButtonView?.hideButtonOnScrollListener(dy)
     }
 
-    override fun onNodeClick(node: NodeVersioned) {
+    override fun onNodeClick(node: Node) {
         when (node.type) {
             Type.GROUP -> try {
-                openChildGroup(node as GroupVersioned)
+                openChildGroup(node as Group)
             } catch (e: ClassCastException) {
                 Log.e(TAG, "Node can't be cast in Group")
             }
 
             Type.ENTRY -> try {
-                val entryVersioned = node as EntryVersioned
+                val entryVersioned = node as Entry
                 EntrySelectionHelper.doEntrySelectionAction(intent,
                         {
                             EntryActivity.launch(this@GroupActivity, entryVersioned, mReadOnly)
@@ -517,7 +508,7 @@ class GroupActivity : LockingActivity(),
         actionNodeMode = null
     }
 
-    override fun onNodeSelected(nodes: List<NodeVersioned>): Boolean {
+    override fun onNodeSelected(nodes: List<Node>): Boolean {
         if (nodes.isNotEmpty()) {
             if (actionNodeMode == null || toolbarAction?.getSupportActionModeCallback() == null) {
                 mListNodesFragment?.actionNodesCallback(nodes, this)?.let {
@@ -532,34 +523,34 @@ class GroupActivity : LockingActivity(),
         return true
     }
 
-    override fun onOpenMenuClick(node: NodeVersioned): Boolean {
+    override fun onOpenMenuClick(node: Node): Boolean {
         finishNodeAction()
         onNodeClick(node)
         return true
     }
 
-    override fun onEditMenuClick(node: NodeVersioned): Boolean {
+    override fun onEditMenuClick(node: Node): Boolean {
         finishNodeAction()
         when (node.type) {
             Type.GROUP -> {
-                mOldGroupToUpdate = node as GroupVersioned
+                mOldGroupToUpdate = node as Group
                 GroupEditDialogFragment.build(mOldGroupToUpdate!!)
                         .show(supportFragmentManager,
                                 GroupEditDialogFragment.TAG_CREATE_GROUP)
             }
-            Type.ENTRY -> EntryEditActivity.launch(this@GroupActivity, node as EntryVersioned)
+            Type.ENTRY -> EntryEditActivity.launch(this@GroupActivity, node as Entry)
         }
         return true
     }
 
-    override fun onCopyMenuClick(nodes: List<NodeVersioned>): Boolean {
+    override fun onCopyMenuClick(nodes: List<Node>): Boolean {
         actionNodeMode?.invalidate()
 
         // Nothing here fragment calls onPasteMenuClick internally
         return true
     }
 
-    override fun onMoveMenuClick(nodes: List<NodeVersioned>): Boolean {
+    override fun onMoveMenuClick(nodes: List<Node>): Boolean {
         actionNodeMode?.invalidate()
 
         // Nothing here fragment calls onPasteMenuClick internally
@@ -567,56 +558,88 @@ class GroupActivity : LockingActivity(),
     }
 
     override fun onPasteMenuClick(pasteMode: ListNodesFragment.PasteMode?,
-                                  nodes: List<NodeVersioned>): Boolean {
+                                  nodes: List<Node>): Boolean {
+        // Move or copy only if allowed (in root if allowed)
+        if (mCurrentGroup != mDatabase?.rootGroup
+                || mDatabase?.rootCanContainsEntry() == true) {
+
             when (pasteMode) {
                 ListNodesFragment.PasteMode.PASTE_FROM_COPY -> {
                     // Copy
                     mCurrentGroup?.let { newParent ->
-                    progressDialogThread?.startDatabaseCopyNodes(
+                        mProgressDialogThread?.startDatabaseCopyNodes(
                                 nodes,
                                 newParent,
-                            !mReadOnly
+                                !mReadOnly && mAutoSaveEnable
                         )
                     }
                 }
                 ListNodesFragment.PasteMode.PASTE_FROM_MOVE -> {
                     // Move
                     mCurrentGroup?.let { newParent ->
-                    progressDialogThread?.startDatabaseMoveNodes(
+                        mProgressDialogThread?.startDatabaseMoveNodes(
                                 nodes,
                                 newParent,
-                            !mReadOnly
+                                !mReadOnly && mAutoSaveEnable
                         )
                     }
                 }
-            else -> {}
+                else -> {
+                }
+            }
+        } else {
+            coordinatorLayout?.let { coordinatorLayout ->
+                Snackbar.make(coordinatorLayout,
+                        R.string.error_copy_entry_here,
+                        Snackbar.LENGTH_LONG).asError().show()
+            }
         }
         finishNodeAction()
         return true
     }
 
-    override fun onDeleteMenuClick(nodes: List<NodeVersioned>): Boolean {
-        progressDialogThread?.startDatabaseDeleteNodes(
+    override fun onDeleteMenuClick(nodes: List<Node>): Boolean {
+        val database = mDatabase
+
+        // If recycle bin enabled, ensure it exists
+        if (database != null && database.isRecycleBinEnabled) {
+            database.ensureRecycleBinExists(resources)
+        }
+
+        // If recycle bin enabled and not in recycle bin, move in recycle bin
+        if (database != null
+                && database.isRecycleBinEnabled
+                && database.recycleBin != mCurrentGroup) {
+            mProgressDialogThread?.startDatabaseDeleteNodes(
                     nodes,
-                !mReadOnly
+                    !mReadOnly && mAutoSaveEnable
             )
+        }
+        // else open the dialog to confirm deletion
+        else {
+            DeleteNodesDialogFragment.getInstance(nodes)
+                    .show(supportFragmentManager, "deleteNodesDialogFragment")
+        }
         finishNodeAction()
         return true
     }
 
+    override fun permanentlyDeleteNodes(nodes: List<Node>) {
+        mProgressDialogThread?.startDatabaseDeleteNodes(
+                nodes,
+                !mReadOnly && mAutoSaveEnable
+        )
+    }
+
     override fun onResume() {
         super.onResume()
         // Refresh the elements
         assignGroupViewElements()
         // Refresh suggestions to change preferences
         mSearchSuggestionAdapter?.reInit(this)
-
-        progressDialogThread?.registerProgressTask()
     }
 
     override fun onPause() {
-        progressDialogThread?.unregisterProgressTask()
-
         super.onPause()
 
         finishNodeAction()
@@ -626,12 +649,22 @@ class GroupActivity : LockingActivity(),
 
         val inflater = menuInflater
         inflater.inflate(R.menu.search, menu)
-        inflater.inflate(R.menu.database_lock, menu)
+        inflater.inflate(R.menu.database, menu)
+        if (mReadOnly) {
+            menu.findItem(R.id.menu_save_database)?.isVisible = false
+        }
         if (!mSelectionMode) {
             inflater.inflate(R.menu.default_menu, menu)
             MenuUtil.contributionMenuInflater(inflater, menu)
         }
 
+        // Menu for recycle bin
+        if (!mReadOnly
+                && mDatabase?.isRecycleBinEnabled == true
+                && mDatabase?.recycleBin == mCurrentGroup) {
+            inflater.inflate(R.menu.recycle_bin, menu)
+        }
+
         // Get the SearchView and set the searchable configuration
         val searchManager = getSystemService(Context.SEARCH_SERVICE) as SearchManager
 
@@ -740,6 +773,17 @@ class GroupActivity : LockingActivity(),
                 lockAndExit()
                 return true
             }
+            R.id.menu_save_database -> {
+                mProgressDialogThread?.startDatabaseSave(!mReadOnly)
+                return true
+            }
+            R.id.menu_empty_recycle_bin -> {
+                mCurrentGroup?.getChildren()?.let { listChildren ->
+                    // Automatically delete all elements
+                    onDeleteMenuClick(listChildren)
+                }
+                return true
+            }
             else -> {
                 // Check the time lock before launching settings
                 MenuUtil.onDefaultMenuOptionsItemSelected(this, item, mReadOnly, true)
@@ -750,7 +794,7 @@ class GroupActivity : LockingActivity(),
 
     override fun approveEditGroup(action: GroupEditDialogFragment.EditGroupDialogAction?,
                                   name: String?,
-                                  icon: PwIcon?) {
+                                  icon: IconImage?) {
 
         if (name != null && name.isNotEmpty() && icon != null) {
             when (action) {
@@ -764,28 +808,33 @@ class GroupActivity : LockingActivity(),
                             // Not really needed here because added in runnable but safe
                             newGroup.parent = currentGroup
 
-                            progressDialogThread?.startDatabaseCreateGroup(
-                                    newGroup, currentGroup, !mReadOnly)
+                            mProgressDialogThread?.startDatabaseCreateGroup(
+                                    newGroup,
+                                    currentGroup,
+                                    !mReadOnly && mAutoSaveEnable
+                            )
                         }
                     }
                 }
                 GroupEditDialogFragment.EditGroupDialogAction.UPDATE -> {
                     // If update add new elements
                     mOldGroupToUpdate?.let { oldGroupToUpdate ->
-                        GroupVersioned(oldGroupToUpdate).let { updateGroup ->
+                        val updateGroup = Group(oldGroupToUpdate).let { updateGroup ->
                             updateGroup.apply {
                                 // WARNING remove parent and children to keep memory
                                 removeParent()
-                                removeChildren() // TODO concurrent exception
+                                removeChildren()
 
                                 title = name
                                 this.icon = icon // TODO custom icon
                             }
-
-                            // If group updated save it in the database
-                            progressDialogThread?.startDatabaseUpdateGroup(
-                                    oldGroupToUpdate, updateGroup, !mReadOnly)
                         }
+                        // If group updated save it in the database
+                        mProgressDialogThread?.startDatabaseUpdateGroup(
+                                oldGroupToUpdate,
+                                updateGroup,
+                                !mReadOnly && mAutoSaveEnable
+                        )
                     }
                 }
                 else -> {}
@@ -795,7 +844,7 @@ class GroupActivity : LockingActivity(),
 
     override fun cancelEditGroup(action: GroupEditDialogFragment.EditGroupDialogAction?,
                                  name: String?,
-                                 icon: PwIcon?) {
+                                 icon: IconImage?) {
         // Do nothing here
     }
 
@@ -806,14 +855,6 @@ class GroupActivity : LockingActivity(),
                 .iconPicked(bundle)
     }
 
-    private fun showWarnings() {
-        if (Database.getInstance().isReadOnly) {
-            if (PreferencesUtil.showReadOnlyWarning(this)) {
-                ReadOnlyDialog().show(supportFragmentManager, "readOnlyDialog")
-            }
-        }
-    }
-
     override fun onSortSelected(sortNodeEnum: SortNodeEnum, ascending: Boolean, groupsBefore: Boolean, recycleBinBottom: Boolean) {
         mListNodesFragment?.onSortSelected(sortNodeEnum, ascending, groupsBefore, recycleBinBottom)
     }
@@ -906,7 +947,7 @@ class GroupActivity : LockingActivity(),
         private const val SEARCH_FRAGMENT_TAG = "SEARCH_FRAGMENT_TAG"
         private const val OLD_GROUP_TO_UPDATE_KEY = "OLD_GROUP_TO_UPDATE_KEY"
 
-        private fun buildAndLaunchIntent(context: Context, group: GroupVersioned?, readOnly: Boolean,
+        private fun buildAndLaunchIntent(context: Context, group: Group?, readOnly: Boolean,
                                          intentBuildLauncher: (Intent) -> Unit) {
             val checkTime = if (context is Activity)
                 TimeoutHelper.checkTimeAndLockIfTimeout(context)

app/src/main/java/com/kunzisoft/keepass/activities/ListNodesFragment.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.activities
 
 import android.content.Context
@@ -18,16 +37,16 @@ import androidx.appcompat.view.ActionMode
 
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.adapters.NodeAdapter
-import com.kunzisoft.keepass.database.SortNodeEnum
-import com.kunzisoft.keepass.database.element.GroupVersioned
-import com.kunzisoft.keepass.database.element.NodeVersioned
+import com.kunzisoft.keepass.database.element.SortNodeEnum
+import com.kunzisoft.keepass.database.element.Group
+import com.kunzisoft.keepass.database.element.node.Node
 import com.kunzisoft.keepass.activities.dialogs.SortDialogFragment
 import com.kunzisoft.keepass.activities.helpers.EntrySelectionHelper
 import com.kunzisoft.keepass.settings.PreferencesUtil
 import com.kunzisoft.keepass.activities.stylish.StylishFragment
 import com.kunzisoft.keepass.activities.helpers.ReadOnlyHelper
 import com.kunzisoft.keepass.database.element.Database
-import com.kunzisoft.keepass.database.element.Type
+import com.kunzisoft.keepass.database.element.node.Type
 import java.util.*
 
 class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionListener {
@@ -36,7 +55,7 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
     private var onScrollListener: OnScrollListener? = null
 
     private var listView: RecyclerView? = null
-    var mainGroup: GroupVersioned? = null
+    var mainGroup: Group? = null
         private set
     private var mAdapter: NodeAdapter? = null
 
@@ -44,8 +63,8 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
         private set
     var nodeActionPasteMode: PasteMode = PasteMode.UNDEFINED
         private set
-    private val listActionNodes = LinkedList<NodeVersioned>()
-    private val listPasteNodes = LinkedList<NodeVersioned>()
+    private val listActionNodes = LinkedList<Node>()
+    private val listPasteNodes = LinkedList<Node>()
 
     private var notFoundView: View? = null
     private var isASearchResult: Boolean = false
@@ -103,7 +122,7 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
             mAdapter = NodeAdapter(context)
             mAdapter?.apply {
                 setOnNodeClickListener(object : NodeAdapter.NodeClickCallback {
-                    override fun onNodeClick(node: NodeVersioned) {
+                    override fun onNodeClick(node: Node) {
                         if (nodeActionSelectionMode) {
                             if (listActionNodes.contains(node)) {
                                 // Remove selected item if already selected
@@ -120,7 +139,7 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
                         }
                     }
 
-                    override fun onNodeLongClick(node: NodeVersioned): Boolean {
+                    override fun onNodeLongClick(node: Node): Boolean {
                         if (nodeActionPasteMode == PasteMode.UNDEFINED) {
                             // Select the first item after a long click
                             if (!listActionNodes.contains(node))
@@ -228,8 +247,7 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
             R.id.menu_sort -> {
                 context?.let { context ->
                     val sortDialogFragment: SortDialogFragment =
-                            if (Database.getInstance().allowRecycleBin
-                                    && Database.getInstance().isRecycleBinEnabled) {
+                            if (Database.getInstance().isRecycleBinEnabled) {
                                 SortDialogFragment.getInstance(
                                         PreferencesUtil.getListSort(context),
                                         PreferencesUtil.getAscendingSort(context),
@@ -251,7 +269,7 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
         }
     }
 
-    fun actionNodesCallback(nodes: List<NodeVersioned>,
+    fun actionNodesCallback(nodes: List<Node>,
                             menuListener: NodesActionMenuListener?) : ActionMode.Callback {
 
         return object : ActionMode.Callback {
@@ -276,7 +294,8 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
                     // Open and Edit for a single item
                     if (nodes.size == 1) {
                         // Edition
-                        if (readOnly || nodes[0] == database.recycleBin) {
+                        if (readOnly
+                                || (database.isRecycleBinEnabled && nodes[0] == database.recycleBin)) {
                             menu?.removeItem(R.id.menu_edit)
                         }
                     } else {
@@ -287,7 +306,6 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
                     // Copy and Move (not for groups)
                     if (readOnly
                             || isASearchResult
-                            || nodes.any { it == database.recycleBin }
                             || nodes.any { it.type == Type.GROUP }) {
                         // TODO COPY For Group
                         menu?.removeItem(R.id.menu_copy)
@@ -295,7 +313,8 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
                     }
 
                     // Deletion
-                    if (readOnly || nodes.any { it == database.recycleBin }) {
+                    if (readOnly
+                            || (database.isRecycleBinEnabled && nodes.any { it == database.recycleBin })) {
                         menu?.removeItem(R.id.menu_delete)
                     }
                 }
@@ -354,7 +373,7 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
             EntryEditActivity.ADD_OR_UPDATE_ENTRY_REQUEST_CODE -> {
                 if (resultCode == EntryEditActivity.ADD_ENTRY_RESULT_CODE
                         || resultCode == EntryEditActivity.UPDATE_ENTRY_RESULT_CODE) {
-                    data?.getParcelableExtra<NodeVersioned>(EntryEditActivity.ADD_OR_UPDATE_ENTRY_KEY)?.let { newNode ->
+                    data?.getParcelableExtra<Node>(EntryEditActivity.ADD_OR_UPDATE_ENTRY_KEY)?.let { newNode ->
                         if (resultCode == EntryEditActivity.ADD_ENTRY_RESULT_CODE)
                             mAdapter?.addNode(newNode)
                         if (resultCode == EntryEditActivity.UPDATE_ENTRY_RESULT_CODE) {
@@ -369,31 +388,31 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
         }
     }
 
-    fun contains(node: NodeVersioned): Boolean {
+    fun contains(node: Node): Boolean {
         return mAdapter?.contains(node) ?: false
     }
 
-    fun addNode(newNode: NodeVersioned) {
+    fun addNode(newNode: Node) {
         mAdapter?.addNode(newNode)
     }
 
-    fun addNodes(newNodes: List<NodeVersioned>) {
+    fun addNodes(newNodes: List<Node>) {
         mAdapter?.addNodes(newNodes)
     }
 
-    fun updateNode(oldNode: NodeVersioned, newNode: NodeVersioned? = null) {
+    fun updateNode(oldNode: Node, newNode: Node? = null) {
         mAdapter?.updateNode(oldNode, newNode ?: oldNode)
     }
 
-    fun updateNodes(oldNodes: List<NodeVersioned>, newNodes: List<NodeVersioned>) {
+    fun updateNodes(oldNodes: List<Node>, newNodes: List<Node>) {
         mAdapter?.updateNodes(oldNodes, newNodes)
     }
 
-    fun removeNode(pwNode: NodeVersioned) {
+    fun removeNode(pwNode: Node) {
         mAdapter?.removeNode(pwNode)
     }
 
-    fun removeNodes(nodes: List<NodeVersioned>) {
+    fun removeNodes(nodes: List<Node>) {
         mAdapter?.removeNodes(nodes)
     }
 
@@ -409,20 +428,20 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
      * Callback listener to redefine to do an action when a node is click
      */
     interface NodeClickListener {
-        fun onNodeClick(node: NodeVersioned)
-        fun onNodeSelected(nodes: List<NodeVersioned>): Boolean
+        fun onNodeClick(node: Node)
+        fun onNodeSelected(nodes: List<Node>): Boolean
     }
 
     /**
      * Menu listener to redefine to do an action in menu
      */
     interface NodesActionMenuListener {
-        fun onOpenMenuClick(node: NodeVersioned): Boolean
-        fun onEditMenuClick(node: NodeVersioned): Boolean
-        fun onCopyMenuClick(nodes: List<NodeVersioned>): Boolean
-        fun onMoveMenuClick(nodes: List<NodeVersioned>): Boolean
-        fun onDeleteMenuClick(nodes: List<NodeVersioned>): Boolean
-        fun onPasteMenuClick(pasteMode: PasteMode?, nodes: List<NodeVersioned>): Boolean
+        fun onOpenMenuClick(node: Node): Boolean
+        fun onEditMenuClick(node: Node): Boolean
+        fun onCopyMenuClick(nodes: List<Node>): Boolean
+        fun onMoveMenuClick(nodes: List<Node>): Boolean
+        fun onDeleteMenuClick(nodes: List<Node>): Boolean
+        fun onPasteMenuClick(pasteMode: PasteMode?, nodes: List<Node>): Boolean
     }
 
     enum class PasteMode {
@@ -447,7 +466,7 @@ class ListNodesFragment : StylishFragment(), SortDialogFragment.SortSelectionLis
         private const val GROUP_KEY = "GROUP_KEY"
         private const val IS_SEARCH = "IS_SEARCH"
 
-        fun newInstance(group: GroupVersioned?, readOnly: Boolean, isASearch: Boolean): ListNodesFragment {
+        fun newInstance(group: Group?, readOnly: Boolean, isASearch: Boolean): ListNodesFragment {
             val bundle = Bundle()
             if (group != null) {
                 bundle.putParcelable(GROUP_KEY, group)

app/src/main/java/com/kunzisoft/keepass/activities/PasswordActivity.kt

@@ -24,6 +24,7 @@ import android.app.assist.AssistStructure
 import android.app.backup.BackupManager
 import android.content.Intent
 import android.content.SharedPreferences
+import android.content.pm.PackageManager
 import android.net.Uri
 import android.os.Build
 import android.os.Bundle
@@ -37,13 +38,11 @@ import android.view.Menu
 import android.view.MenuItem
 import android.view.View
 import android.view.inputmethod.EditorInfo.IME_ACTION_DONE
-import android.widget.Button
-import android.widget.CompoundButton
-import android.widget.EditText
-import android.widget.TextView
+import android.widget.*
 import androidx.annotation.RequiresApi
 import androidx.appcompat.widget.Toolbar
 import androidx.biometric.BiometricManager
+import androidx.core.app.ActivityCompat
 import com.google.android.material.snackbar.Snackbar
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.dialogs.DuplicateUuidDialog
@@ -58,7 +57,7 @@ import com.kunzisoft.keepass.autofill.AutofillHelper
 import com.kunzisoft.keepass.biometric.AdvancedUnlockedManager
 import com.kunzisoft.keepass.database.action.ProgressDialogThread
 import com.kunzisoft.keepass.database.element.Database
-import com.kunzisoft.keepass.database.exception.LoadDatabaseDuplicateUuidException
+import com.kunzisoft.keepass.database.exception.DuplicateUuidDatabaseException
 import com.kunzisoft.keepass.education.PasswordActivityEducation
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_LOAD_TASK
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.CIPHER_ENTITY_KEY
@@ -99,9 +98,10 @@ class PasswordActivity : StylishActivity() {
     private var mRememberKeyFile: Boolean = false
     private var mOpenFileHelper: OpenFileHelper? = null
 
+    private var mPermissionAsked = false
     private var readOnly: Boolean = false
 
-    private var progressDialogThread: ProgressDialogThread? = null
+    private var mProgressDialogThread: ProgressDialogThread? = null
 
     private var advancedUnlockedManager: AdvancedUnlockedManager? = null
 
@@ -130,6 +130,7 @@ class PasswordActivity : StylishActivity() {
         checkboxDefaultDatabaseView = findViewById(R.id.default_database)
         advancedUnlockInfoView = findViewById(R.id.biometric_info)
 
+        mPermissionAsked = savedInstanceState?.getBoolean(KEY_PERMISSION_ASKED) ?: mPermissionAsked
         readOnly = ReadOnlyHelper.retrieveReadOnlyFromInstanceStateOrPreference(this, savedInstanceState)
 
         val browseView = findViewById<View>(R.id.open_database_button)
@@ -163,7 +164,8 @@ class PasswordActivity : StylishActivity() {
             enableOrNotTheConfirmationButton()
         }
 
-        progressDialogThread = ProgressDialogThread(this) { actionTask, result ->
+        mProgressDialogThread = ProgressDialogThread(this).apply {
+            onActionFinish = { actionTask, result ->
                 when (actionTask) {
                     ACTION_DATABASE_LOAD_TASK -> {
                         // Recheck biometric if error
@@ -188,7 +190,7 @@ class PasswordActivity : StylishActivity() {
                                 resultError = resultException.getLocalizedMessage(resources)
 
                                 // Relaunch loading if we need to fix UUID
-                            if (resultException is LoadDatabaseDuplicateUuidException) {
+                                if (resultException is DuplicateUuidDatabaseException) {
                                     showLoadDatabaseDuplicateUuidMessage {
 
                                         var databaseUri: Uri? = null
@@ -231,6 +233,7 @@ class PasswordActivity : StylishActivity() {
                 }
             }
         }
+    }
 
     private fun launchGroupActivity() {
         EntrySelectionHelper.doEntrySelectionAction(intent,
@@ -272,12 +275,13 @@ class PasswordActivity : StylishActivity() {
         // For check shutdown
         super.onResume()
 
-        progressDialogThread?.registerProgressTask()
+        mProgressDialogThread?.registerProgressTask()
 
         initUriFromIntent()
     }
 
     override fun onSaveInstanceState(outState: Bundle) {
+        outState.putBoolean(KEY_PERMISSION_ASKED, mPermissionAsked)
         ReadOnlyHelper.onSaveInstanceState(outState, readOnly)
         super.onSaveInstanceState(outState)
     }
@@ -399,7 +403,7 @@ class PasswordActivity : StylishActivity() {
                                     }
                                 })
                     }
-                    advancedUnlockedManager?.initBiometric()
+                    advancedUnlockedManager?.checkBiometricAvailability()
                     biometricInitialize = true
                 } else {
                     advancedUnlockedManager?.destroy()
@@ -459,7 +463,7 @@ class PasswordActivity : StylishActivity() {
     }
 
     override fun onPause() {
-        progressDialogThread?.unregisterProgressTask()
+        mProgressDialogThread?.unregisterProgressTask()
 
         super.onPause()
     }
@@ -527,7 +531,7 @@ class PasswordActivity : StylishActivity() {
                                                   readOnly: Boolean,
                                                   cipherDatabaseEntity: CipherDatabaseEntity?,
                                                   fixDuplicateUUID: Boolean) {
-        progressDialogThread?.startDatabaseLoad(
+        mProgressDialogThread?.startDatabaseLoad(
                 databaseUri,
                 password,
                 keyFile,
@@ -543,9 +547,6 @@ class PasswordActivity : StylishActivity() {
         }.show(supportFragmentManager, "duplicateUUIDDialog")
     }
 
-    // To fix multiple view education
-    private var performedEductionInProgress = false
-
     override fun onCreateOptionsMenu(menu: Menu): Boolean {
         val inflater = menuInflater
         // Read menu
@@ -561,51 +562,96 @@ class PasswordActivity : StylishActivity() {
 
         super.onCreateOptionsMenu(menu)
 
-        if (!performedEductionInProgress) {
-            performedEductionInProgress = true
-            // Show education views
-            Handler().post { performedNextEducation(PasswordActivityEducation(this), menu) }
+        launchEducation(menu) {
+            launchCheckPermission()
         }
 
         return true
     }
 
+    // Check permission
+    private fun launchCheckPermission() {
+        val writePermission = android.Manifest.permission.WRITE_EXTERNAL_STORAGE
+        val permissions = arrayOf(writePermission)
+        if (Build.VERSION.SDK_INT >= 23
+                && !readOnly
+                && !mPermissionAsked) {
+            mPermissionAsked = true
+            // Check self permission to show or not the dialog
+            if (toolbar != null
+                    && ActivityCompat.checkSelfPermission(this, writePermission) != PackageManager.PERMISSION_GRANTED) {
+                ActivityCompat.requestPermissions(this, permissions, WRITE_EXTERNAL_STORAGE_REQUEST)
+            }
+        }
+    }
+
+    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
+
+        when (requestCode) {
+            WRITE_EXTERNAL_STORAGE_REQUEST -> {
+                if (grantResults.isEmpty() || grantResults[0] != PackageManager.PERMISSION_GRANTED) {
+                    if (ActivityCompat.shouldShowRequestPermissionRationale(this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE))
+                        Toast.makeText(this, R.string.read_only_warning, Toast.LENGTH_LONG).show()
+                }
+            }
+        }
+    }
+
+    // To fix multiple view education
+    private var performedEductionInProgress = false
+    private fun launchEducation(menu: Menu, onEducationFinished: ()-> Unit) {
+        if (!performedEductionInProgress) {
+            performedEductionInProgress = true
+            // Show education views
+            Handler().post { performedNextEducation(PasswordActivityEducation(this), menu, onEducationFinished) }
+        }
+    }
+
     private fun performedNextEducation(passwordActivityEducation: PasswordActivityEducation,
-                                       menu: Menu) {
-        val educationContainerView = containerView
-        val unlockEducationPerformed = educationContainerView != null
+                                       menu: Menu,
+                                       onEducationFinished: ()-> Unit) {
+        val educationToolbar = toolbar
+        val unlockEducationPerformed = educationToolbar != null
                 && passwordActivityEducation.checkAndPerformedUnlockEducation(
-                educationContainerView,
+                educationToolbar,
                         {
-                            performedNextEducation(passwordActivityEducation, menu)
+                            performedNextEducation(passwordActivityEducation, menu, onEducationFinished)
                         },
                         {
-                            performedNextEducation(passwordActivityEducation, menu)
+                            performedNextEducation(passwordActivityEducation, menu, onEducationFinished)
                         })
         if (!unlockEducationPerformed) {
-            val educationToolbar = toolbar
             val readOnlyEducationPerformed =
                     educationToolbar?.findViewById<View>(R.id.menu_open_file_read_mode_key) != null
                     && passwordActivityEducation.checkAndPerformedReadOnlyEducation(
                     educationToolbar.findViewById(R.id.menu_open_file_read_mode_key),
                     {
                         onOptionsItemSelected(menu.findItem(R.id.menu_open_file_read_mode_key))
-                        performedNextEducation(passwordActivityEducation, menu)
+                        performedNextEducation(passwordActivityEducation, menu, onEducationFinished)
                     },
                     {
-                        performedNextEducation(passwordActivityEducation, menu)
+                        performedNextEducation(passwordActivityEducation, menu, onEducationFinished)
                     })
 
             if (!readOnlyEducationPerformed) {
-
                 val biometricCanAuthenticate = BiometricManager.from(this).canAuthenticate()
-                // EducationPerformed
+                val biometricEducationPerformed =
                 Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
                         && PreferencesUtil.isBiometricUnlockEnable(applicationContext)
                         && (biometricCanAuthenticate == BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED || biometricCanAuthenticate == BiometricManager.BIOMETRIC_SUCCESS)
                         && advancedUnlockInfoView != null && advancedUnlockInfoView?.unlockIconImageView != null
-                        && passwordActivityEducation.checkAndPerformedBiometricEducation(advancedUnlockInfoView?.unlockIconImageView!!)
+                        && passwordActivityEducation.checkAndPerformedBiometricEducation(advancedUnlockInfoView?.unlockIconImageView!!,
+                        {
+                            performedNextEducation(passwordActivityEducation, menu, onEducationFinished)
+                        },
+                        {
+                            performedNextEducation(passwordActivityEducation, menu, onEducationFinished)
+                        })
 
+                if (!biometricEducationPerformed) {
+                    onEducationFinished.invoke()
+                }
             }
         }
     }
@@ -681,6 +727,10 @@ class PasswordActivity : StylishActivity() {
         private const val KEY_PASSWORD = "password"
         private const val KEY_LAUNCH_IMMEDIATELY = "launchImmediately"
 
+        private const val KEY_PERMISSION_ASKED = "KEY_PERMISSION_ASKED"
+
+        private const val WRITE_EXTERNAL_STORAGE_REQUEST = 647
+
         private fun buildAndLaunchIntent(activity: Activity, databaseFile: Uri, keyFile: Uri?,
                                          intentBuildLauncher: (Intent) -> Unit) {
             val intent = Intent(activity, PasswordActivity::class.java)

app/src/main/java/com/kunzisoft/keepass/activities/dialogs/DeleteNodesDialogFragment.kt

@@ -0,0 +1,93 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.activities.dialogs
+
+import android.app.Dialog
+import android.content.Context
+import android.os.Bundle
+import androidx.appcompat.app.AlertDialog
+import androidx.fragment.app.DialogFragment
+import com.kunzisoft.keepass.R
+import com.kunzisoft.keepass.database.element.Database
+import com.kunzisoft.keepass.database.element.node.Node
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.getBundleFromListNodes
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.getListNodesFromBundle
+
+class DeleteNodesDialogFragment : DialogFragment() {
+
+    private var mNodesToDelete: List<Node> = ArrayList()
+    private var mListener: DeleteNodeListener? = null
+
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+        try {
+            mListener = context as DeleteNodeListener
+        } catch (e: ClassCastException) {
+            throw ClassCastException(context.toString()
+                    + " must implement " + DeleteNodeListener::class.java.name)
+        }
+    }
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+
+        arguments?.apply {
+            if (containsKey(DatabaseTaskNotificationService.GROUPS_ID_KEY)
+                    && containsKey(DatabaseTaskNotificationService.ENTRIES_ID_KEY)) {
+                mNodesToDelete = getListNodesFromBundle(Database.getInstance(), this)
+            }
+        } ?: savedInstanceState?.apply {
+            if (containsKey(DatabaseTaskNotificationService.GROUPS_ID_KEY)
+                    && containsKey(DatabaseTaskNotificationService.ENTRIES_ID_KEY)) {
+                mNodesToDelete = getListNodesFromBundle(Database.getInstance(), savedInstanceState)
+            }
+        }
+        activity?.let { activity ->
+            // Use the Builder class for convenient dialog construction
+            val builder = AlertDialog.Builder(activity)
+
+            builder.setMessage(getString(R.string.warning_permanently_delete_nodes))
+            builder.setPositiveButton(android.R.string.yes) { _, _ ->
+                mListener?.permanentlyDeleteNodes(mNodesToDelete)
+            }
+            builder.setNegativeButton(android.R.string.no) { _, _ -> dismiss() }
+            // Create the AlertDialog object and return it
+            return builder.create()
+        }
+        return super.onCreateDialog(savedInstanceState)
+    }
+
+    override fun onSaveInstanceState(outState: Bundle) {
+        super.onSaveInstanceState(outState)
+        outState.putAll(getBundleFromListNodes(mNodesToDelete))
+    }
+
+    interface DeleteNodeListener {
+        fun permanentlyDeleteNodes(nodes: List<Node>)
+    }
+
+    companion object {
+        fun getInstance(nodesToDelete: List<Node>): DeleteNodesDialogFragment {
+            return DeleteNodesDialogFragment().apply {
+                arguments = getBundleFromListNodes(nodesToDelete)
+            }
+        }
+    }
+}

app/src/main/java/com/kunzisoft/keepass/activities/dialogs/GroupEditDialogFragment.kt

@@ -33,8 +33,8 @@ import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.dialogs.GroupEditDialogFragment.EditGroupDialogAction.CREATION
 import com.kunzisoft.keepass.activities.dialogs.GroupEditDialogFragment.EditGroupDialogAction.UPDATE
 import com.kunzisoft.keepass.database.element.Database
-import com.kunzisoft.keepass.database.element.GroupVersioned
-import com.kunzisoft.keepass.database.element.PwIcon
+import com.kunzisoft.keepass.database.element.Group
+import com.kunzisoft.keepass.database.element.icon.IconImage
 import com.kunzisoft.keepass.icons.assignDatabaseIcon
 
 class GroupEditDialogFragment : DialogFragment(), IconPickerDialogFragment.IconPickerListener {
@@ -45,7 +45,7 @@ class GroupEditDialogFragment : DialogFragment(), IconPickerDialogFragment.IconP
 
     private var editGroupDialogAction: EditGroupDialogAction? = null
     private var nameGroup: String? = null
-    private var iconGroup: PwIcon? = null
+    private var iconGroup: IconImage? = null
 
     private var nameTextLayoutView: TextInputLayout? = null
     private var nameTextView: TextView? = null
@@ -186,8 +186,8 @@ class GroupEditDialogFragment : DialogFragment(), IconPickerDialogFragment.IconP
     }
 
     interface EditGroupListener {
-        fun approveEditGroup(action: EditGroupDialogAction?, name: String?, icon: PwIcon?)
-        fun cancelEditGroup(action: EditGroupDialogAction?, name: String?, icon: PwIcon?)
+        fun approveEditGroup(action: EditGroupDialogAction?, name: String?, icon: IconImage?)
+        fun cancelEditGroup(action: EditGroupDialogAction?, name: String?, icon: IconImage?)
     }
 
     companion object {
@@ -206,7 +206,7 @@ class GroupEditDialogFragment : DialogFragment(), IconPickerDialogFragment.IconP
             return fragment
         }
 
-        fun build(group: GroupVersioned): GroupEditDialogFragment {
+        fun build(group: Group): GroupEditDialogFragment {
             val bundle = Bundle()
             bundle.putString(KEY_NAME, group.title)
             bundle.putParcelable(KEY_ICON, group.icon)

app/src/main/java/com/kunzisoft/keepass/activities/dialogs/IconPickerDialogFragment.kt

@@ -35,7 +35,7 @@ import android.widget.GridView
 import android.widget.ImageView
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.stylish.StylishActivity
-import com.kunzisoft.keepass.database.element.PwIconStandard
+import com.kunzisoft.keepass.database.element.icon.IconImageStandard
 import com.kunzisoft.keepass.icons.IconPack
 import com.kunzisoft.keepass.icons.IconPackChooser
 
@@ -72,7 +72,7 @@ class IconPickerDialogFragment : DialogFragment() {
 
             currIconGridView.setOnItemClickListener { _, _, position, _ ->
                 val bundle = Bundle()
-                bundle.putParcelable(KEY_ICON_STANDARD, PwIconStandard(position))
+                bundle.putParcelable(KEY_ICON_STANDARD, IconImageStandard(position))
                 iconPickerListener?.iconPicked(bundle)
                 dismiss()
             }
@@ -128,7 +128,7 @@ class IconPickerDialogFragment : DialogFragment() {
 
         private const val KEY_ICON_STANDARD = "KEY_ICON_STANDARD"
 
-        fun getIconStandardFromBundle(bundle: Bundle): PwIconStandard? {
+        fun getIconStandardFromBundle(bundle: Bundle): IconImageStandard? {
             return bundle.getParcelable(KEY_ICON_STANDARD)
         }
 

app/src/main/java/com/kunzisoft/keepass/activities/dialogs/ReadOnlyDialog.kt

@@ -1,56 +0,0 @@
-/*
- * Copyright 2019 Jeremy Jamet / Kunzisoft.
- *
- * This file is part of KeePass DX.
- *
- *  KeePass DX is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  KeePass DX is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with KeePass DX.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-package com.kunzisoft.keepass.activities.dialogs
-
-import android.app.Dialog
-import android.os.Build
-import android.os.Bundle
-import android.preference.PreferenceManager
-import androidx.fragment.app.DialogFragment
-import com.kunzisoft.keepass.R
-
-class ReadOnlyDialog : DialogFragment() {
-
-    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
-        activity?.let { activity ->
-            // Use the Builder class for convenient dialog construction
-            val builder = androidx.appcompat.app.AlertDialog.Builder(activity)
-
-            var warning = getString(R.string.read_only_warning)
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
-                warning = warning + "\n\n" + getString(R.string.read_only_kitkat_warning)
-            }
-            builder.setMessage(warning)
-
-            builder.setPositiveButton(getString(android.R.string.ok)) { _, _ -> dismiss() }
-            builder.setNegativeButton(getString(R.string.beta_dontask)) { _, _ ->
-                val prefs = PreferenceManager.getDefaultSharedPreferences(context)
-                val edit = prefs.edit()
-                edit.putBoolean(getString(R.string.show_read_only_warning), false)
-                edit.apply()
-                dismiss()
-            }
-
-            // Create the AlertDialog object and return it
-            return builder.create()
-        }
-        return super.onCreateDialog(savedInstanceState)
-    }
-}

app/src/main/java/com/kunzisoft/keepass/activities/dialogs/SetOTPDialogFragment.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.activities.dialogs
 
 import android.annotation.SuppressLint
@@ -29,6 +48,7 @@ import com.kunzisoft.keepass.otp.OtpElement.Companion.MIN_TOTP_PERIOD
 import com.kunzisoft.keepass.otp.OtpTokenType
 import com.kunzisoft.keepass.otp.OtpType
 import com.kunzisoft.keepass.otp.TokenCalculator
+import java.util.*
 
 class SetOTPDialogFragment : DialogFragment() {
 
@@ -246,7 +266,7 @@ class SetOTPDialogFragment : DialogFragment() {
             override fun afterTextChanged(s: Editable?) {
                 s?.toString()?.let { userString ->
                     try {
-                        mOtpElement.setBase32Secret(userString)
+                        mOtpElement.setBase32Secret(userString.toUpperCase(Locale.ENGLISH))
                         otpSecretContainer?.error = null
                     } catch (exception: Exception) {
                         otpSecretContainer?.error = getString(R.string.error_otp_secret_key)

app/src/main/java/com/kunzisoft/keepass/activities/dialogs/SortDialogFragment.kt

@@ -29,7 +29,7 @@ import android.view.View
 import android.widget.CompoundButton
 import android.widget.RadioGroup
 import com.kunzisoft.keepass.R
-import com.kunzisoft.keepass.database.SortNodeEnum
+import com.kunzisoft.keepass.database.element.SortNodeEnum
 
 class SortDialogFragment : DialogFragment() {
 

app/src/main/java/com/kunzisoft/keepass/activities/helpers/EntrySelectionHelper.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.activities.helpers
 
 import android.app.assist.AssistStructure

app/src/main/java/com/kunzisoft/keepass/activities/helpers/ReadOnlyHelper.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.activities.helpers
 
 import android.content.Context

app/src/main/java/com/kunzisoft/keepass/activities/lock/LockingActivity.kt

@@ -32,6 +32,7 @@ import android.view.ViewGroup
 import com.kunzisoft.keepass.activities.helpers.EntrySelectionHelper
 import com.kunzisoft.keepass.activities.helpers.ReadOnlyHelper
 import com.kunzisoft.keepass.activities.stylish.StylishActivity
+import com.kunzisoft.keepass.database.action.ProgressDialogThread
 import com.kunzisoft.keepass.database.element.Database
 import com.kunzisoft.keepass.notifications.KeyboardEntryNotificationService
 import com.kunzisoft.keepass.magikeyboard.MagikIME
@@ -63,6 +64,10 @@ abstract class LockingActivity : StylishActivity() {
             return field || mSelectionMode
         }
     protected var mSelectionMode: Boolean = false
+    protected var mAutoSaveEnable: Boolean = true
+
+    var mProgressDialogThread: ProgressDialogThread? = null
+        private set
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -86,6 +91,8 @@ abstract class LockingActivity : StylishActivity() {
 
         mExitLock = false
         mReadOnly = ReadOnlyHelper.retrieveReadOnlyFromInstanceStateOrIntent(savedInstanceState, intent)
+
+        mProgressDialogThread = ProgressDialogThread(this)
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
@@ -101,8 +108,13 @@ abstract class LockingActivity : StylishActivity() {
     override fun onResume() {
         super.onResume()
 
+        mProgressDialogThread?.registerProgressTask()
+
         // To refresh when back to normal workflow from selection workflow
         mSelectionMode = EntrySelectionHelper.retrieveEntrySelectionModeFromIntent(intent)
+        mAutoSaveEnable = PreferencesUtil.isAutoSaveDatabaseEnabled(this)
+
+        invalidateOptionsMenu()
 
         if (mTimeoutEnable) {
             // End activity if database not loaded
@@ -119,8 +131,6 @@ abstract class LockingActivity : StylishActivity() {
             if (!mExitLock)
                 TimeoutHelper.recordTime(this)
         }
-
-        invalidateOptionsMenu()
     }
 
     override fun onSaveInstanceState(outState: Bundle) {
@@ -130,6 +140,8 @@ abstract class LockingActivity : StylishActivity() {
     }
 
     override fun onPause() {
+        mProgressDialogThread?.unregisterProgressTask()
+
         super.onPause()
 
         if (mTimeoutEnable) {

app/src/main/java/com/kunzisoft/keepass/activities/lock/LockingHideActivity.kt

@@ -1,55 +0,0 @@
-/*
- * Copyright 2017 Brian Pellin, Jeremy Jamet / Kunzisoft.
- *     
- * This file is part of KeePass DX.
- *
- *  KeePass DX is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  KeePass DX is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with KeePass DX.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-package com.kunzisoft.keepass.activities.lock
-
-import android.content.ActivityNotFoundException
-import android.content.Intent
-import android.os.Bundle
-import android.view.WindowManager
-
-/**
- * Locking Hide Activity that sets FLAG_SECURE to prevent screenshots, and from
- * appearing in the recent app preview
- */
-abstract class LockingHideActivity : LockingActivity() {
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-
-        // Several gingerbread devices have problems with FLAG_SECURE
-        window.setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE)
-    }
-
-    /* (non-Javadoc) Workaround for HTC Linkify issues
-	 * @see android.app.Activity#startActivity(android.content.Intent)
-	 */
-    override fun startActivity(intent: Intent) {
-        try {
-            if (intent.component != null && intent.component!!.shortClassName == ".HtcLinkifyDispatcherActivity") {
-                intent.component = null
-            }
-            super.startActivity(intent)
-        } catch (e: ActivityNotFoundException) {
-            /* Catch the bad HTC implementation case */
-            super.startActivity(Intent.createChooser(intent, null))
-        }
-
-    }
-}

app/src/main/java/com/kunzisoft/keepass/activities/stylish/Stylish.kt

@@ -61,6 +61,7 @@ object Stylish {
 
         return when (themeString) {
             context.getString(R.string.list_style_name_night) -> R.style.KeepassDXStyle_Night
+            context.getString(R.string.list_style_name_black) -> R.style.KeepassDXStyle_Black
             context.getString(R.string.list_style_name_dark) -> R.style.KeepassDXStyle_Dark
             context.getString(R.string.list_style_name_blue) -> R.style.KeepassDXStyle_Blue
             context.getString(R.string.list_style_name_red) -> R.style.KeepassDXStyle_Red

app/src/main/java/com/kunzisoft/keepass/activities/stylish/StylishActivity.kt

@@ -19,20 +19,45 @@
  */
 package com.kunzisoft.keepass.activities.stylish
 
+import android.content.ActivityNotFoundException
+import android.content.Intent
 import android.os.Bundle
 import androidx.annotation.StyleRes
 import androidx.appcompat.app.AppCompatActivity
 import android.util.Log
+import android.view.WindowManager
 
+/**
+ * Stylish Hide Activity that apply a dynamic style and sets FLAG_SECURE to prevent screenshots / from
+ * appearing in the recent app preview
+ */
 abstract class StylishActivity : AppCompatActivity() {
 
     @StyleRes
     private var themeId: Int = 0
 
+    /* (non-Javadoc) Workaround for HTC Linkify issues
+     * @see android.app.Activity#startActivity(android.content.Intent)
+     */
+    override fun startActivity(intent: Intent) {
+        try {
+            if (intent.component != null && intent.component!!.shortClassName == ".HtcLinkifyDispatcherActivity") {
+                intent.component = null
+            }
+            super.startActivity(intent)
+        } catch (e: ActivityNotFoundException) {
+            /* Catch the bad HTC implementation case */
+            super.startActivity(Intent.createChooser(intent, null))
+        }
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         this.themeId = Stylish.getThemeId(this)
         setTheme(themeId)
+
+        // Several gingerbread devices have problems with FLAG_SECURE
+        window.setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE)
     }
 
     override fun onResume() {

app/src/main/java/com/kunzisoft/keepass/adapters/EntryAttachmentsAdapter.kt

@@ -0,0 +1,96 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.adapters
+
+import android.content.Context
+import android.text.format.Formatter
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ProgressBar
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import com.kunzisoft.keepass.R
+import com.kunzisoft.keepass.database.element.database.CompressionAlgorithm
+import com.kunzisoft.keepass.model.AttachmentState
+import com.kunzisoft.keepass.model.EntryAttachment
+
+class EntryAttachmentsAdapter(val context: Context) : RecyclerView.Adapter<EntryAttachmentsAdapter.EntryBinariesViewHolder>() {
+
+    private val inflater: LayoutInflater = LayoutInflater.from(context)
+    var entryAttachmentsList: MutableList<EntryAttachment> = ArrayList()
+    var onItemClickListener: ((item: EntryAttachment, position: Int)->Unit)? = null
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): EntryBinariesViewHolder {
+        return EntryBinariesViewHolder(inflater.inflate(R.layout.item_attachment, parent, false))
+    }
+
+    override fun onBindViewHolder(holder: EntryBinariesViewHolder, position: Int) {
+        val entryAttachment = entryAttachmentsList[position]
+
+        holder.binaryFileTitle.text = entryAttachment.name
+        holder.binaryFileSize.text = Formatter.formatFileSize(context,
+                entryAttachment.binaryAttachment.length())
+        holder.binaryFileCompression.apply {
+            if (entryAttachment.binaryAttachment.isCompressed == true) {
+                text = CompressionAlgorithm.GZip.getName(context.resources)
+                visibility = View.VISIBLE
+            } else {
+                text = ""
+                visibility = View.GONE
+            }
+        }
+        holder.binaryFileProgress.apply {
+            visibility = when (entryAttachment.downloadState) {
+                AttachmentState.NULL, AttachmentState.COMPLETE, AttachmentState.ERROR -> View.GONE
+                AttachmentState.START, AttachmentState.IN_PROGRESS -> View.VISIBLE
+            }
+            progress = entryAttachment.downloadProgression
+        }
+
+        holder.itemView.setOnClickListener {
+            onItemClickListener?.invoke(entryAttachment, position)
+        }
+    }
+
+    override fun getItemCount(): Int {
+        return entryAttachmentsList.size
+    }
+
+    fun updateProgress(entryAttachment: EntryAttachment) {
+        val indexEntryAttachment = entryAttachmentsList.indexOfLast { current -> current.name == entryAttachment.name }
+        if (indexEntryAttachment != -1) {
+            entryAttachmentsList[indexEntryAttachment] = entryAttachment
+            notifyItemChanged(indexEntryAttachment)
+        }
+    }
+
+    fun clear() {
+        entryAttachmentsList.clear()
+    }
+
+    inner class EntryBinariesViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+
+        var binaryFileTitle: TextView = itemView.findViewById(R.id.item_attachment_title)
+        var binaryFileSize: TextView = itemView.findViewById(R.id.item_attachment_size)
+        var binaryFileCompression: TextView = itemView.findViewById(R.id.item_attachment_compression)
+        var binaryFileProgress: ProgressBar = itemView.findViewById(R.id.item_attachment_progress)
+    }
+}

app/src/main/java/com/kunzisoft/keepass/adapters/EntryHistoryAdapter.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.adapters
 
 import android.content.Context
@@ -7,13 +26,13 @@ import android.view.ViewGroup
 import android.widget.TextView
 import androidx.recyclerview.widget.RecyclerView
 import com.kunzisoft.keepass.R
-import com.kunzisoft.keepass.database.element.EntryVersioned
+import com.kunzisoft.keepass.database.element.Entry
 
 class EntryHistoryAdapter(val context: Context) : RecyclerView.Adapter<EntryHistoryAdapter.EntryHistoryViewHolder>() {
 
     private val inflater: LayoutInflater = LayoutInflater.from(context)
-    var entryHistoryList: MutableList<EntryVersioned> = ArrayList()
-    var onItemClickListener: ((item: EntryVersioned, position: Int)->Unit)? = null
+    var entryHistoryList: MutableList<Entry> = ArrayList()
+    var onItemClickListener: ((item: Entry, position: Int)->Unit)? = null
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): EntryHistoryViewHolder {
         return EntryHistoryViewHolder(inflater.inflate(R.layout.item_list_entry_history, parent, false))

app/src/main/java/com/kunzisoft/keepass/adapters/FieldsAdapter.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.adapters
 
 import android.content.Context
@@ -15,7 +34,7 @@ import java.util.ArrayList
 class FieldsAdapter(context: Context) : RecyclerView.Adapter<FieldsAdapter.FieldViewHolder>() {
 
     private val inflater: LayoutInflater = LayoutInflater.from(context)
-    var fields: MutableList<Field> = ArrayList()
+    private var fields: MutableList<Field> = ArrayList()
     var onItemClickListener: OnItemClickListener? = null
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): FieldViewHolder {
@@ -33,6 +52,11 @@ class FieldsAdapter(context: Context) : RecyclerView.Adapter<FieldsAdapter.Field
         return fields.size
     }
 
+    fun setFields(fieldsToAdd: List<Field>) {
+        fields.clear()
+        fields.addAll(fieldsToAdd)
+    }
+
     fun clear() {
         fields.clear()
     }

app/src/main/java/com/kunzisoft/keepass/adapters/NodeAdapter.kt

@@ -34,10 +34,15 @@ import androidx.recyclerview.widget.RecyclerView
 import androidx.recyclerview.widget.SortedList
 import androidx.recyclerview.widget.SortedListAdapterCallback
 import com.kunzisoft.keepass.R
-import com.kunzisoft.keepass.database.SortNodeEnum
-import com.kunzisoft.keepass.database.element.*
+import com.kunzisoft.keepass.database.element.Database
+import com.kunzisoft.keepass.database.element.Entry
+import com.kunzisoft.keepass.database.element.Group
+import com.kunzisoft.keepass.database.element.SortNodeEnum
+import com.kunzisoft.keepass.database.element.node.Node
+import com.kunzisoft.keepass.database.element.node.Type
 import com.kunzisoft.keepass.icons.assignDatabaseIcon
 import com.kunzisoft.keepass.settings.PreferencesUtil
+import com.kunzisoft.keepass.view.strikeOut
 import java.util.*
 
 class NodeAdapter
@@ -48,7 +53,7 @@ class NodeAdapter
 (private val context: Context)
     : RecyclerView.Adapter<NodeAdapter.NodeViewHolder>() {
 
-    private val nodeSortedList: SortedList<NodeVersioned>
+    private val nodeSortedList: SortedList<Node>
     private val inflater: LayoutInflater = LayoutInflater.from(context)
 
     private var calculateViewTypeTextSize = Array(2) { true} // number of view type
@@ -64,8 +69,9 @@ class NodeAdapter
     private var recycleBinBottomSort: Boolean = true
     private var showUserNames: Boolean = true
     private var showNumberEntries: Boolean = true
+    private var entryFilters = arrayOf<Group.ChildFilter>()
 
-    private var actionNodesList = LinkedList<NodeVersioned>()
+    private var actionNodesList = LinkedList<Node>()
     private var nodeClickCallback: NodeClickCallback? = null
 
     private val mDatabase: Database
@@ -83,18 +89,18 @@ class NodeAdapter
     init {
         assignPreferences()
 
-        this.nodeSortedList = SortedList(NodeVersioned::class.java, object : SortedListAdapterCallback<NodeVersioned>(this) {
-            override fun compare(item1: NodeVersioned, item2: NodeVersioned): Int {
+        this.nodeSortedList = SortedList(Node::class.java, object : SortedListAdapterCallback<Node>(this) {
+            override fun compare(item1: Node, item2: Node): Int {
                 return listSort.getNodeComparator(ascendingSort, groupsBeforeSort, recycleBinBottomSort).compare(item1, item2)
             }
 
-            override fun areContentsTheSame(oldItem: NodeVersioned, newItem: NodeVersioned): Boolean {
+            override fun areContentsTheSame(oldItem: Node, newItem: Node): Boolean {
                 return oldItem.type == newItem.type
                         && oldItem.title == newItem.title
                         && oldItem.icon == newItem.icon
             }
 
-            override fun areItemsTheSame(item1: NodeVersioned, item2: NodeVersioned): Boolean {
+            override fun areItemsTheSame(item1: Node, item2: Node): Boolean {
                 return item1 == item2
             }
         })
@@ -126,6 +132,8 @@ class NodeAdapter
         this.showUserNames = PreferencesUtil.showUsernamesListEntries(context)
         this.showNumberEntries = PreferencesUtil.showNumberEntries(context)
 
+        this.entryFilters = Group.ChildFilter.getDefaults(context)
+
         // Reinit textSize for all view type
         calculateViewTypeTextSize.forEachIndexed { index, _ -> calculateViewTypeTextSize[index] = true }
     }
@@ -133,11 +141,11 @@ class NodeAdapter
     /**
      * Rebuild the list by clear and build children from the group
      */
-    fun rebuildList(group: GroupVersioned) {
+    fun rebuildList(group: Group) {
         this.nodeSortedList.clear()
         assignPreferences()
         try {
-            this.nodeSortedList.addAll(group.getChildren())
+            this.nodeSortedList.addAll(group.getChildren(*entryFilters))
         } catch (e: Exception) {
             Log.e(TAG, "Can't add node elements to the list", e)
             Toast.makeText(context, "Can't add node elements to the list : " + e.message, Toast.LENGTH_LONG).show()
@@ -145,7 +153,7 @@ class NodeAdapter
         notifyDataSetChanged()
     }
 
-    fun contains(node: NodeVersioned): Boolean {
+    fun contains(node: Node): Boolean {
         return nodeSortedList.indexOf(node) != SortedList.INVALID_POSITION
     }
 
@@ -153,7 +161,7 @@ class NodeAdapter
      * Add a node to the list
      * @param node Node to add
      */
-    fun addNode(node: NodeVersioned) {
+    fun addNode(node: Node) {
         nodeSortedList.add(node)
     }
 
@@ -161,7 +169,7 @@ class NodeAdapter
      * Add nodes to the list
      * @param nodes Nodes to add
      */
-    fun addNodes(nodes: List<NodeVersioned>) {
+    fun addNodes(nodes: List<Node>) {
         nodeSortedList.addAll(nodes)
     }
 
@@ -169,7 +177,7 @@ class NodeAdapter
      * Remove a node in the list
      * @param node Node to delete
      */
-    fun removeNode(node: NodeVersioned) {
+    fun removeNode(node: Node) {
         nodeSortedList.remove(node)
     }
 
@@ -177,7 +185,7 @@ class NodeAdapter
      * Remove nodes in the list
      * @param nodes Nodes to delete
      */
-    fun removeNodes(nodes: List<NodeVersioned>) {
+    fun removeNodes(nodes: List<Node>) {
         nodes.forEach { node ->
             nodeSortedList.remove(node)
         }
@@ -209,7 +217,7 @@ class NodeAdapter
      * @param oldNode Node before the update
      * @param newNode Node after the update
      */
-    fun updateNode(oldNode: NodeVersioned, newNode: NodeVersioned) {
+    fun updateNode(oldNode: Node, newNode: Node) {
         nodeSortedList.beginBatchedUpdates()
         nodeSortedList.remove(oldNode)
         nodeSortedList.add(newNode)
@@ -221,7 +229,7 @@ class NodeAdapter
      * @param oldNodes Nodes before the update
      * @param newNodes Node after the update
      */
-    fun updateNodes(oldNodes: List<NodeVersioned>, newNodes: List<NodeVersioned>) {
+    fun updateNodes(oldNodes: List<Node>, newNodes: List<Node>) {
         nodeSortedList.beginBatchedUpdates()
         oldNodes.forEach { oldNode ->
             nodeSortedList.remove(oldNode)
@@ -230,11 +238,11 @@ class NodeAdapter
         nodeSortedList.endBatchedUpdates()
     }
 
-    fun notifyNodeChanged(node: NodeVersioned) {
+    fun notifyNodeChanged(node: Node) {
         notifyItemChanged(nodeSortedList.indexOf(node))
     }
 
-    fun setActionNodes(actionNodes: List<NodeVersioned>) {
+    fun setActionNodes(actionNodes: List<Node>) {
         this.actionNodesList.apply {
             clear()
             addAll(actionNodes)
@@ -287,15 +295,53 @@ class NodeAdapter
                 width = iconSize.toInt()
             }
         }
+
         // Assign text
         holder.text.apply {
             text = subNode.title
             setTextSize(textSizeUnit, infoTextSize)
-            paintFlags = if (subNode.isCurrentlyExpires)
-                paintFlags or Paint.STRIKE_THRU_TEXT_FLAG
-            else
-                paintFlags and Paint.STRIKE_THRU_TEXT_FLAG
+            strikeOut(subNode.isCurrentlyExpires)
         }
+        // Add subText with username
+        holder.subText.apply {
+            text = ""
+            strikeOut(subNode.isCurrentlyExpires)
+            visibility = View.GONE
+        }
+
+        // Specific elements for entry
+        if (subNode.type == Type.ENTRY) {
+            val entry = subNode as Entry
+            mDatabase.startManageEntry(entry)
+
+            holder.text.text = entry.getVisualTitle()
+            holder.subText.apply {
+                val username = entry.username
+                if (showUserNames && username.isNotEmpty()) {
+                    visibility = View.VISIBLE
+                    text = username
+                    setTextSize(textSizeUnit, subtextSize)
+                }
+            }
+
+            mDatabase.stopManageEntry(entry)
+        }
+
+        // Add number of entries in groups
+        if (subNode.type == Type.GROUP) {
+            if (showNumberEntries) {
+                holder.numberChildren?.apply {
+                    text = (subNode as Group)
+                            .getChildEntries(*entryFilters)
+                            .size.toString()
+                    setTextSize(textSizeUnit, numberChildrenTextSize)
+                    visibility = View.VISIBLE
+                }
+            } else {
+                holder.numberChildren?.visibility = View.GONE
+            }
+        }
+
         // Assign click
         holder.container.setOnClickListener {
             nodeClickCallback?.onNodeClick(subNode)
@@ -305,46 +351,8 @@ class NodeAdapter
         }
 
         holder.container.isSelected = actionNodesList.contains(subNode)
-
-        // Add subText with username
-        holder.subText.apply {
-            text = ""
-            paintFlags = if (subNode.isCurrentlyExpires)
-                paintFlags or Paint.STRIKE_THRU_TEXT_FLAG
-            else
-                paintFlags and Paint.STRIKE_THRU_TEXT_FLAG
-            visibility = View.GONE
-            if (subNode.type == Type.ENTRY) {
-                val entry = subNode as EntryVersioned
-
-                mDatabase.startManageEntry(entry)
-
-                holder.text.text = entry.getVisualTitle()
-
-                val username = entry.username
-                if (showUserNames && username.isNotEmpty()) {
-                    visibility = View.VISIBLE
-                    text = username
-                    setTextSize(textSizeUnit, subtextSize)
     }
 
-                mDatabase.stopManageEntry(entry)
-            }
-        }
-
-        // Add number of entries in groups
-        if (subNode.type == Type.GROUP) {
-            if (showNumberEntries) {
-                holder.numberChildren?.apply {
-                    text = (subNode as GroupVersioned).getChildEntries(true).size.toString()
-                    setTextSize(textSizeUnit, numberChildrenTextSize)
-                    visibility = View.VISIBLE
-                }
-            } else {
-                holder.numberChildren?.visibility = View.GONE
-            }
-        }
-    }
     
     override fun getItemCount(): Int {
         return nodeSortedList.size()
@@ -361,8 +369,8 @@ class NodeAdapter
      * Callback listener to redefine to do an action when a node is click
      */
     interface NodeClickCallback {
-        fun onNodeClick(node: NodeVersioned)
-        fun onNodeLongClick(node: NodeVersioned): Boolean
+        fun onNodeClick(node: Node)
+        fun onNodeLongClick(node: Node): Boolean
     }
 
     class NodeViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {

app/src/main/java/com/kunzisoft/keepass/adapters/SearchEntryCursorAdapter.kt

@@ -22,22 +22,20 @@ package com.kunzisoft.keepass.adapters
 import android.content.Context
 import android.database.Cursor
 import android.graphics.Color
-import androidx.cursoradapter.widget.CursorAdapter
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.ImageView
 import android.widget.TextView
 import com.kunzisoft.keepass.R
-import com.kunzisoft.keepass.database.cursor.EntryCursor
 import com.kunzisoft.keepass.database.element.Database
-import com.kunzisoft.keepass.database.element.EntryVersioned
-import com.kunzisoft.keepass.database.element.PwIcon
+import com.kunzisoft.keepass.database.element.Entry
 import com.kunzisoft.keepass.icons.assignDatabaseIcon
 import com.kunzisoft.keepass.settings.PreferencesUtil
-import java.util.*
+import com.kunzisoft.keepass.view.strikeOut
 
-class SearchEntryCursorAdapter(context: Context, private val database: Database)
+class SearchEntryCursorAdapter(private val context: Context,
+                               private val database: Database)
     : androidx.cursoradapter.widget.CursorAdapter(context, null, FLAG_REGISTER_CONTENT_OBSERVER) {
 
     private val cursorInflater: LayoutInflater = context.getSystemService(
@@ -72,34 +70,31 @@ class SearchEntryCursorAdapter(context: Context, private val database: Database)
 
     override fun bindView(view: View, context: Context, cursor: Cursor) {
 
-        // Retrieve elements from cursor
-        val uuid = UUID(cursor.getLong(cursor.getColumnIndex(EntryCursor.COLUMN_INDEX_UUID_MOST_SIGNIFICANT_BITS)),
-                cursor.getLong(cursor.getColumnIndex(EntryCursor.COLUMN_INDEX_UUID_LEAST_SIGNIFICANT_BITS)))
-        val iconFactory = database.iconFactory
-        var icon: PwIcon = iconFactory.getIcon(
-                UUID(cursor.getLong(cursor.getColumnIndex(EntryCursor.COLUMN_INDEX_ICON_CUSTOM_UUID_MOST_SIGNIFICANT_BITS)),
-                        cursor.getLong(cursor.getColumnIndex(EntryCursor.COLUMN_INDEX_ICON_CUSTOM_UUID_LEAST_SIGNIFICANT_BITS))))
-        if (icon.isUnknown) {
-            icon = iconFactory.getIcon(cursor.getInt(cursor.getColumnIndex(EntryCursor.COLUMN_INDEX_ICON_STANDARD)))
-            if (icon.isUnknown)
-                icon = iconFactory.keyIcon
-        }
-        val title = cursor.getString(cursor.getColumnIndex(EntryCursor.COLUMN_INDEX_TITLE))
-        val username = cursor.getString(cursor.getColumnIndex(EntryCursor.COLUMN_INDEX_USERNAME))
-        val url = cursor.getString(cursor.getColumnIndex(EntryCursor.COLUMN_INDEX_URL))
-
+        database.getEntryFrom(cursor)?.let { currentEntry ->
             val viewHolder = view.tag as ViewHolder
 
             // Assign image
-        viewHolder.imageViewIcon?.assignDatabaseIcon(database.drawFactory, icon, iconColor)
+            viewHolder.imageViewIcon?.assignDatabaseIcon(
+                    database.drawFactory,
+                    currentEntry.icon,
+                    iconColor)
 
             // Assign title
-        val showTitle = EntryVersioned.getVisualTitle(false, title, username, url, uuid.toString())
-        viewHolder.textViewTitle?.text = showTitle
-        if (displayUsername && username.isNotEmpty()) {
-            viewHolder.textViewSubTitle?.text = String.format("(%s)", username)
+            viewHolder.textViewTitle?.apply {
+                text = currentEntry.getVisualTitle()
+                strikeOut(currentEntry.isCurrentlyExpires)
+            }
+
+            // Assign subtitle
+            viewHolder.textViewSubTitle?.apply {
+                val entryUsername = currentEntry.username
+                text = if (displayUsername && entryUsername.isNotEmpty()) {
+                    String.format("(%s)", entryUsername)
                 } else {
-            viewHolder.textViewSubTitle?.text = ""
+                    ""
+                }
+                strikeOut(currentEntry.isCurrentlyExpires)
+            }
         }
     }
 
@@ -110,11 +105,11 @@ class SearchEntryCursorAdapter(context: Context, private val database: Database)
     }
 
     override fun runQueryOnBackgroundThread(constraint: CharSequence): Cursor? {
-        return database.searchEntries(constraint.toString())
+        return database.searchEntries(context, constraint.toString())
     }
 
-    fun getEntryFromPosition(position: Int): EntryVersioned? {
-        var pwEntry: EntryVersioned? = null
+    fun getEntryFromPosition(position: Int): Entry? {
+        var pwEntry: Entry? = null
 
         val cursor = this.cursor
         if (cursor.moveToFirst() && cursor.move(position)) {

app/src/main/java/com/kunzisoft/keepass/app/database/ActionDatabaseAsyncTask.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.app.database
 
 import android.os.AsyncTask

app/src/main/java/com/kunzisoft/keepass/app/database/AppDatabase.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.app.database
 
 import androidx.room.Database

app/src/main/java/com/kunzisoft/keepass/app/database/CipherDatabaseAction.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.app.database
 
 import android.content.Context

app/src/main/java/com/kunzisoft/keepass/app/database/CipherDatabaseDao.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.app.database
 
 import androidx.room.*

app/src/main/java/com/kunzisoft/keepass/app/database/CipherDatabaseEntity.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.app.database
 
 import android.os.Parcel

app/src/main/java/com/kunzisoft/keepass/app/database/FileDatabaseHistoryDao.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.app.database
 
 import androidx.room.*

app/src/main/java/com/kunzisoft/keepass/app/database/FileDatabaseHistoryEntity.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.app.database
 
 import androidx.room.ColumnInfo

app/src/main/java/com/kunzisoft/keepass/biometric/AdvancedUnlockedManager.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.biometric
 
 import android.content.Intent
@@ -10,6 +29,7 @@ import android.view.MenuInflater
 import android.widget.CompoundButton
 import android.widget.TextView
 import androidx.annotation.RequiresApi
+import androidx.biometric.BiometricConstants
 import androidx.biometric.BiometricManager
 import androidx.biometric.BiometricPrompt
 import androidx.fragment.app.FragmentActivity
@@ -36,61 +56,54 @@ class AdvancedUnlockedManager(var context: FragmentActivity,
 
     private var cipherDatabaseAction = CipherDatabaseAction.getInstance(context.applicationContext)
 
-    // fingerprint related code here
-    fun initBiometric() {
-
-        // Check if fingerprint well init (be called the first time the fingerprint is configured
-        // and the activity still active)
-        if (biometricUnlockDatabaseHelper == null || !biometricUnlockDatabaseHelper!!.isBiometricInitialized) {
-            biometricUnlockDatabaseHelper = BiometricUnlockDatabaseHelper(context)
-            // callback for fingerprint findings
-            biometricUnlockDatabaseHelper?.biometricUnlockCallback = this
-            biometricUnlockDatabaseHelper?.authenticationCallback = biometricAuthenticationCallback
-        }
-
+    init {
         // Add a check listener to change fingerprint mode
         checkboxPasswordView?.setOnCheckedChangeListener { compoundButton, checked ->
-
             checkBiometricAvailability()
-
             // Add old listener to enable the button, only be call here because of onCheckedChange bug
             onCheckedPasswordChangeListener?.onCheckedChanged(compoundButton, checked)
         }
-
-        checkBiometricAvailability()
     }
 
-    @Synchronized
-    private fun checkBiometricAvailability() {
+    /**
+     * Check biometric availability and change the current mode depending of device's state
+     */
+    fun checkBiometricAvailability() {
 
-        // fingerprint not supported (by API level or hardware) so keep option hidden
+        // biometric not supported (by API level or hardware) so keep option hidden
         // or manually disable
         val biometricCanAuthenticate = BiometricManager.from(context).canAuthenticate()
 
         if (!PreferencesUtil.isBiometricUnlockEnable(context)
                 || biometricCanAuthenticate == BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE
                 || biometricCanAuthenticate == BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE) {
-
             toggleMode(Mode.UNAVAILABLE)
-
         } else {
-
-            // fingerprint is available but not configured, show icon but in disabled state with some information
+            // biometric is available but not configured, show icon but in disabled state with some information
             if (biometricCanAuthenticate == BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED) {
-
-                toggleMode(Mode.NOT_CONFIGURED)
-
+                toggleMode(Mode.BIOMETRIC_NOT_CONFIGURED)
+            } else {
+                // Check if fingerprint well init (be called the first time the fingerprint is configured
+                // and the activity still active)
+                if (biometricUnlockDatabaseHelper?.isKeyManagerInitialized != true) {
+                    biometricUnlockDatabaseHelper = BiometricUnlockDatabaseHelper(context)
+                    // callback for fingerprint findings
+                    biometricUnlockDatabaseHelper?.biometricUnlockCallback = this
+                    biometricUnlockDatabaseHelper?.authenticationCallback = biometricAuthenticationCallback
+                }
+                // Recheck to change the mode
+                if (biometricUnlockDatabaseHelper?.isKeyManagerInitialized != true) {
+                    toggleMode(Mode.KEY_MANAGER_UNAVAILABLE)
                 } else {
                     if (checkboxPasswordView?.isChecked == true) {
                         // listen for encryption
-                    toggleMode(Mode.STORE)
+                        toggleMode(Mode.STORE_CREDENTIAL)
                     } else {
                         cipherDatabaseAction.containsCipherDatabase(databaseFileUri) { containsCipher ->
-
-                        // fingerprint available but no stored password found yet for this DB so show info don't listen
+                            // biometric available but no stored password found yet for this DB so show info don't listen
                             toggleMode( if (containsCipher) {
                                 // listen for decryption
-                            Mode.OPEN
+                                Mode.EXTRACT_CREDENTIAL
                             } else {
                                 // wait for typing
                                 Mode.WAIT_CREDENTIAL
@@ -100,6 +113,7 @@ class AdvancedUnlockedManager(var context: FragmentActivity,
                 }
             }
         }
+    }
 
     private fun toggleMode(newBiometricMode: Mode) {
         if (newBiometricMode != biometricMode) {
@@ -129,17 +143,15 @@ class AdvancedUnlockedManager(var context: FragmentActivity,
         override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
             context.runOnUiThread {
                 when (biometricMode) {
-                    Mode.UNAVAILABLE -> {
-                    }
-                    Mode.NOT_CONFIGURED -> {
-                    }
-                    Mode.WAIT_CREDENTIAL -> {
-                    }
-                    Mode.STORE -> {
+                    Mode.UNAVAILABLE -> {}
+                    Mode.BIOMETRIC_NOT_CONFIGURED -> {}
+                    Mode.KEY_MANAGER_UNAVAILABLE -> {}
+                    Mode.WAIT_CREDENTIAL -> {}
+                    Mode.STORE_CREDENTIAL -> {
                         // newly store the entered password in encrypted way
                         biometricUnlockDatabaseHelper?.encryptData(passwordView?.text.toString())
                     }
-                    Mode.OPEN -> {
+                    Mode.EXTRACT_CREDENTIAL -> {
                         // retrieve the encrypted value from preferences
                         cipherDatabaseAction.getCipherDatabase(databaseFileUri) {
                             it?.encryptedValue?.let { value ->
@@ -155,7 +167,7 @@ class AdvancedUnlockedManager(var context: FragmentActivity,
     private fun initNotAvailable() {
         showFingerPrintViews(false)
 
-        advancedUnlockInfoView?.setIconViewClickListener(null)
+        advancedUnlockInfoView?.setIconViewClickListener(false, null)
     }
 
     private fun initNotConfigured() {
@@ -163,7 +175,17 @@ class AdvancedUnlockedManager(var context: FragmentActivity,
         setAdvancedUnlockedTitleView(R.string.configure_biometric)
         setAdvancedUnlockedMessageView("")
 
-        advancedUnlockInfoView?.setIconViewClickListener {
+        advancedUnlockInfoView?.setIconViewClickListener(false) {
+            context.startActivity(Intent(Settings.ACTION_SECURITY_SETTINGS))
+        }
+    }
+
+    private fun initKeyManagerNotAvailable() {
+        showFingerPrintViews(true)
+        setAdvancedUnlockedTitleView(R.string.keystore_not_accessible)
+        setAdvancedUnlockedMessageView("")
+
+        advancedUnlockInfoView?.setIconViewClickListener(false) {
             context.startActivity(Intent(Settings.ACTION_SECURITY_SETTINGS))
         }
     }
@@ -173,7 +195,11 @@ class AdvancedUnlockedManager(var context: FragmentActivity,
         setAdvancedUnlockedTitleView(R.string.no_credentials_stored)
         setAdvancedUnlockedMessageView("")
 
-        advancedUnlockInfoView?.setIconViewClickListener(null)
+        advancedUnlockInfoView?.setIconViewClickListener(false) {
+            biometricAuthenticationCallback.onAuthenticationError(
+                    BiometricConstants.ERROR_UNABLE_TO_PROCESS
+                    , context.getString(R.string.credential_before_click_biometric_button))
+        }
     }
 
     private fun openBiometricPrompt(biometricPrompt: BiometricPrompt?,
@@ -235,10 +261,11 @@ class AdvancedUnlockedManager(var context: FragmentActivity,
     fun initBiometricMode() {
         when (biometricMode) {
             Mode.UNAVAILABLE -> initNotAvailable()
-            Mode.NOT_CONFIGURED -> initNotConfigured()
+            Mode.BIOMETRIC_NOT_CONFIGURED -> initNotConfigured()
+            Mode.KEY_MANAGER_UNAVAILABLE -> initKeyManagerNotAvailable()
             Mode.WAIT_CREDENTIAL -> initWaitData()
-            Mode.STORE -> initEncryptData()
-            Mode.OPEN -> initDecryptData()
+            Mode.STORE_CREDENTIAL -> initEncryptData()
+            Mode.EXTRACT_CREDENTIAL -> initDecryptData()
         }
         // Show fingerprint key deletion
         context.invalidateOptionsMenu()
@@ -255,7 +282,7 @@ class AdvancedUnlockedManager(var context: FragmentActivity,
         if (!addBiometricMenuInProgress) {
             addBiometricMenuInProgress = true
             cipherDatabaseAction.containsCipherDatabase(databaseFileUri) {
-                if ((biometricMode != Mode.UNAVAILABLE && biometricMode != Mode.NOT_CONFIGURED)
+                if ((biometricMode != Mode.UNAVAILABLE && biometricMode != Mode.BIOMETRIC_NOT_CONFIGURED)
                         && it) {
                     menuInflater.inflate(R.menu.advanced_unlock, menu)
                     addBiometricMenuInProgress = false
@@ -267,7 +294,7 @@ class AdvancedUnlockedManager(var context: FragmentActivity,
     fun deleteEntryKey() {
         biometricUnlockDatabaseHelper?.deleteEntryKey()
         cipherDatabaseAction.deleteByDatabaseUri(databaseFileUri)
-        biometricMode = Mode.NOT_CONFIGURED
+        biometricMode = Mode.BIOMETRIC_NOT_CONFIGURED
         checkBiometricAvailability()
     }
 
@@ -313,7 +340,7 @@ class AdvancedUnlockedManager(var context: FragmentActivity,
     }
 
     enum class Mode {
-        UNAVAILABLE, NOT_CONFIGURED, WAIT_CREDENTIAL, STORE, OPEN
+        UNAVAILABLE, BIOMETRIC_NOT_CONFIGURED, KEY_MANAGER_UNAVAILABLE, WAIT_CREDENTIAL, STORE_CREDENTIAL, EXTRACT_CREDENTIAL
     }
 
     companion object {

app/src/main/java/com/kunzisoft/keepass/biometric/BiometricUnlockDatabaseHelper.kt

@@ -52,13 +52,14 @@ class BiometricUnlockDatabaseHelper(private val context: FragmentActivity) {
     private var keyguardManager: KeyguardManager? = null
     private var cryptoObject: BiometricPrompt.CryptoObject? = null
 
-    private var isBiometricInit = false
+    private var isKeyManagerInit = false
     var authenticationCallback: BiometricPrompt.AuthenticationCallback? = null
     var biometricUnlockCallback: BiometricUnlockCallback? = null
 
     private val promptInfoStoreCredential = BiometricPrompt.PromptInfo.Builder().apply {
         setTitle(context.getString(R.string.biometric_prompt_store_credential_title))
         setDescription(context.getString(R.string.biometric_prompt_store_credential_message))
+        setConfirmationRequired(true)
         // TODO device credential
         /*
         if (keyguardManager?.isDeviceSecure == true)
@@ -70,7 +71,8 @@ class BiometricUnlockDatabaseHelper(private val context: FragmentActivity) {
 
     private val promptInfoExtractCredential = BiometricPrompt.PromptInfo.Builder().apply {
         setTitle(context.getString(R.string.biometric_prompt_extract_credential_title))
-        setDescription(context.getString(R.string.biometric_prompt_extract_credential_message))
+        //setDescription(context.getString(R.string.biometric_prompt_extract_credential_message))
+        setConfirmationRequired(false)
         // TODO device credential
         /*
         if (keyguardManager?.isDeviceSecure == true)
@@ -80,18 +82,18 @@ class BiometricUnlockDatabaseHelper(private val context: FragmentActivity) {
             setNegativeButtonText(context.getString(android.R.string.cancel))
     }.build()
 
-    val isBiometricInitialized: Boolean
+    val isKeyManagerInitialized: Boolean
         get() {
-            if (!isBiometricInit) {
+            if (!isKeyManagerInit) {
                 biometricUnlockCallback?.onBiometricException(Exception("Biometric not initialized"))
             }
-            return isBiometricInit
+            return isKeyManagerInit
         }
 
     init {
         if (BiometricManager.from(context).canAuthenticate() != BiometricManager.BIOMETRIC_SUCCESS) {
             // really not much to do when no fingerprint support found
-            isBiometricInit = false
+            isKeyManagerInit = false
         } else {
             this.keyguardManager = context.getSystemService(Context.KEYGUARD_SERVICE) as KeyguardManager
 
@@ -103,17 +105,19 @@ class BiometricUnlockDatabaseHelper(private val context: FragmentActivity) {
                                 + BIOMETRIC_BLOCKS_MODES + "/"
                                 + BIOMETRIC_ENCRYPTION_PADDING)
                 this.cryptoObject = BiometricPrompt.CryptoObject(cipher!!)
-                isBiometricInit = true
+                isKeyManagerInit = (keyStore != null
+                        && keyGenerator != null
+                        && cipher != null)
             } catch (e: Exception) {
                 Log.e(TAG, "Unable to initialize the keystore", e)
-                isBiometricInit = false
+                isKeyManagerInit = false
                 biometricUnlockCallback?.onBiometricException(e)
             }
         }
     }
 
     private fun getSecretKey(): SecretKey? {
-        if (!isBiometricInitialized) {
+        if (!isKeyManagerInitialized) {
             return null
         }
         try {
@@ -155,7 +159,7 @@ class BiometricUnlockDatabaseHelper(private val context: FragmentActivity) {
                         : (biometricPrompt: BiometricPrompt?,
                            cryptoObject: BiometricPrompt.CryptoObject?,
                            promptInfo: BiometricPrompt.PromptInfo)->Unit) {
-        if (!isBiometricInitialized) {
+        if (!isKeyManagerInitialized) {
             return
         }
         try {
@@ -176,11 +180,10 @@ class BiometricUnlockDatabaseHelper(private val context: FragmentActivity) {
             Log.e(TAG, "Unable to initialize encrypt data", e)
             biometricUnlockCallback?.onBiometricException(e)
         }
-
     }
 
     fun encryptData(value: String) {
-        if (!isBiometricInitialized) {
+        if (!isKeyManagerInitialized) {
             return
         }
         try {
@@ -197,14 +200,13 @@ class BiometricUnlockDatabaseHelper(private val context: FragmentActivity) {
             Log.e(TAG, "Unable to encrypt data", e)
             biometricUnlockCallback?.onBiometricException(e)
         }
-
     }
 
     fun initDecryptData(ivSpecValue: String, actionIfCypherInit
             : (biometricPrompt: BiometricPrompt?,
                cryptoObject: BiometricPrompt.CryptoObject?,
                promptInfo: BiometricPrompt.PromptInfo)->Unit) {
-        if (!isBiometricInitialized) {
+        if (!isKeyManagerInitialized) {
             return
         }
         try {
@@ -229,11 +231,10 @@ class BiometricUnlockDatabaseHelper(private val context: FragmentActivity) {
             Log.e(TAG, "Unable to initialize decrypt data", e)
             biometricUnlockCallback?.onBiometricException(e)
         }
-
     }
 
     fun decryptData(encryptedValue: String) {
-        if (!isBiometricInitialized) {
+        if (!isKeyManagerInitialized) {
             return
         }
         try {
@@ -249,7 +250,6 @@ class BiometricUnlockDatabaseHelper(private val context: FragmentActivity) {
             Log.e(TAG, "Unable to decrypt data", e)
             biometricUnlockCallback?.onBiometricException(e)
         }
-
     }
 
     fun deleteEntryKey() {

app/src/main/java/com/kunzisoft/keepass/biometric/FingerPrintAnimatedVector.kt

@@ -20,43 +20,44 @@
 package com.kunzisoft.keepass.biometric
 
 import android.content.Context
-import android.graphics.drawable.Animatable2
-import android.graphics.drawable.AnimatedVectorDrawable
 import android.graphics.drawable.Drawable
 import android.os.Build
 import androidx.annotation.RequiresApi
 import android.widget.ImageView
+import androidx.vectordrawable.graphics.drawable.Animatable2Compat
+import androidx.vectordrawable.graphics.drawable.AnimatedVectorDrawableCompat
 
 import com.kunzisoft.keepass.R
 
 @RequiresApi(api = Build.VERSION_CODES.M)
 class FingerPrintAnimatedVector(context: Context, imageView: ImageView) {
 
-    private val scanFingerprint: AnimatedVectorDrawable =
-            context.getDrawable(R.drawable.scan_fingerprint) as AnimatedVectorDrawable
+    private val scanFingerprint: AnimatedVectorDrawableCompat? =
+            AnimatedVectorDrawableCompat.create(context, R.drawable.scan_fingerprint)
 
     init {
         imageView.setImageDrawable(scanFingerprint)
     }
 
-    private var animationCallback = object : Animatable2.AnimationCallback() {
+    private var animationCallback = object : Animatable2Compat.AnimationCallback() {
         override fun onAnimationEnd(drawable: Drawable) {
-            if (!scanFingerprint.isRunning)
-                scanFingerprint.start()
+            imageView.post {
+                scanFingerprint?.start()
+            }
         }
     }
 
     fun startScan() {
-        scanFingerprint.registerAnimationCallback(animationCallback)
+        scanFingerprint?.registerAnimationCallback(animationCallback)
 
-        if (!scanFingerprint.isRunning)
-            scanFingerprint.start()
+        if (scanFingerprint?.isRunning != true)
+            scanFingerprint?.start()
     }
 
     fun stopScan() {
-        scanFingerprint.unregisterAnimationCallback(animationCallback)
+        scanFingerprint?.unregisterAnimationCallback(animationCallback)
 
-        if (scanFingerprint.isRunning)
+        if (scanFingerprint?.isRunning == true)
             scanFingerprint.stop()
     }
 }

app/src/main/java/com/kunzisoft/keepass/crypto/CryptoUtil.kt

@@ -19,15 +19,13 @@
  */
 package com.kunzisoft.keepass.crypto
 
-import com.kunzisoft.keepass.stream.LEDataOutputStream
 import com.kunzisoft.keepass.stream.NullOutputStream
-
+import com.kunzisoft.keepass.stream.longTo8Bytes
 import java.io.IOException
 import java.security.DigestOutputStream
 import java.security.MessageDigest
 import java.security.NoSuchAlgorithmException
-import java.util.Arrays
-
+import java.util.*
 import javax.crypto.Mac
 import kotlin.math.min
 
@@ -60,7 +58,7 @@ object CryptoUtil {
                     throw RuntimeException(e)
                 }
 
-                val pbR = LEDataOutputStream.writeLongBuf(r)
+                val pbR = longTo8Bytes(r)
                 val part = hmac.doFinal(pbR)
 
                 val copy = min(cbOut - pos, part.size)

app/src/main/java/com/kunzisoft/keepass/crypto/engine/AesEngine.kt

@@ -21,8 +21,8 @@ package com.kunzisoft.keepass.crypto.engine
 
 
 import com.kunzisoft.keepass.crypto.CipherFactory
-import com.kunzisoft.keepass.database.element.PwEncryptionAlgorithm
-import com.kunzisoft.keepass.utils.Types
+import com.kunzisoft.keepass.database.element.security.EncryptionAlgorithm
+import com.kunzisoft.keepass.stream.bytes16ToUuid
 import java.security.InvalidAlgorithmParameterException
 import java.security.InvalidKeyException
 import java.security.NoSuchAlgorithmException
@@ -41,13 +41,28 @@ class AesEngine : CipherEngine() {
         return cipher
     }
 
-    override fun getPwEncryptionAlgorithm(): PwEncryptionAlgorithm {
-        return PwEncryptionAlgorithm.AESRijndael
+    override fun getPwEncryptionAlgorithm(): EncryptionAlgorithm {
+        return EncryptionAlgorithm.AESRijndael
     }
 
     companion object {
 
-        val CIPHER_UUID: UUID = Types.bytestoUUID(
-                byteArrayOf(0x31.toByte(), 0xC1.toByte(), 0xF2.toByte(), 0xE6.toByte(), 0xBF.toByte(), 0x71.toByte(), 0x43.toByte(), 0x50.toByte(), 0xBE.toByte(), 0x58.toByte(), 0x05.toByte(), 0x21.toByte(), 0x6A.toByte(), 0xFC.toByte(), 0x5A.toByte(), 0xFF.toByte()))
+        val CIPHER_UUID: UUID = bytes16ToUuid(
+                byteArrayOf(0x31.toByte(),
+                        0xC1.toByte(),
+                        0xF2.toByte(),
+                        0xE6.toByte(),
+                        0xBF.toByte(),
+                        0x71.toByte(),
+                        0x43.toByte(),
+                        0x50.toByte(),
+                        0xBE.toByte(),
+                        0x58.toByte(),
+                        0x05.toByte(),
+                        0x21.toByte(),
+                        0x6A.toByte(),
+                        0xFC.toByte(),
+                        0x5A.toByte(),
+                        0xFF.toByte()))
     }
 }

app/src/main/java/com/kunzisoft/keepass/crypto/engine/ChaCha20Engine.kt

@@ -19,8 +19,8 @@
  */
 package com.kunzisoft.keepass.crypto.engine
 
-import com.kunzisoft.keepass.database.element.PwEncryptionAlgorithm
-import com.kunzisoft.keepass.utils.Types
+import com.kunzisoft.keepass.database.element.security.EncryptionAlgorithm
+import com.kunzisoft.keepass.stream.bytes16ToUuid
 import org.spongycastle.jce.provider.BouncyCastleProvider
 import java.security.InvalidAlgorithmParameterException
 import java.security.InvalidKeyException
@@ -44,13 +44,28 @@ class ChaCha20Engine : CipherEngine() {
         return cipher
     }
 
-    override fun getPwEncryptionAlgorithm(): PwEncryptionAlgorithm {
-        return PwEncryptionAlgorithm.ChaCha20
+    override fun getPwEncryptionAlgorithm(): EncryptionAlgorithm {
+        return EncryptionAlgorithm.ChaCha20
     }
 
     companion object {
 
-        val CIPHER_UUID: UUID = Types.bytestoUUID(
-                byteArrayOf(0xD6.toByte(), 0x03.toByte(), 0x8A.toByte(), 0x2B.toByte(), 0x8B.toByte(), 0x6F.toByte(), 0x4C.toByte(), 0xB5.toByte(), 0xA5.toByte(), 0x24.toByte(), 0x33.toByte(), 0x9A.toByte(), 0x31.toByte(), 0xDB.toByte(), 0xB5.toByte(), 0x9A.toByte()))
+        val CIPHER_UUID: UUID = bytes16ToUuid(
+                byteArrayOf(0xD6.toByte(),
+                        0x03.toByte(),
+                        0x8A.toByte(),
+                        0x2B.toByte(),
+                        0x8B.toByte(),
+                        0x6F.toByte(),
+                        0x4C.toByte(),
+                        0xB5.toByte(),
+                        0xA5.toByte(),
+                        0x24.toByte(),
+                        0x33.toByte(),
+                        0x9A.toByte(),
+                        0x31.toByte(),
+                        0xDB.toByte(),
+                        0xB5.toByte(),
+                        0x9A.toByte()))
     }
 }

app/src/main/java/com/kunzisoft/keepass/crypto/engine/CipherEngine.kt

@@ -19,7 +19,7 @@
  */
 package com.kunzisoft.keepass.crypto.engine
 
-import com.kunzisoft.keepass.database.element.PwEncryptionAlgorithm
+import com.kunzisoft.keepass.database.element.security.EncryptionAlgorithm
 
 import java.security.InvalidAlgorithmParameterException
 import java.security.InvalidKeyException
@@ -46,6 +46,6 @@ abstract class CipherEngine {
         return getCipher(opmode, key, IV, false)
     }
 
-    abstract fun getPwEncryptionAlgorithm(): PwEncryptionAlgorithm
+    abstract fun getPwEncryptionAlgorithm(): EncryptionAlgorithm
 
 }

app/src/main/java/com/kunzisoft/keepass/crypto/engine/TwofishEngine.kt

@@ -20,14 +20,12 @@
 package com.kunzisoft.keepass.crypto.engine
 
 import com.kunzisoft.keepass.crypto.CipherFactory
-import com.kunzisoft.keepass.database.element.PwEncryptionAlgorithm
-import com.kunzisoft.keepass.utils.Types
-
+import com.kunzisoft.keepass.database.element.security.EncryptionAlgorithm
+import com.kunzisoft.keepass.stream.bytes16ToUuid
 import java.security.InvalidAlgorithmParameterException
 import java.security.InvalidKeyException
 import java.security.NoSuchAlgorithmException
-import java.util.UUID
-
+import java.util.*
 import javax.crypto.Cipher
 import javax.crypto.NoSuchPaddingException
 import javax.crypto.spec.IvParameterSpec
@@ -47,13 +45,28 @@ class TwofishEngine : CipherEngine() {
         return cipher
     }
 
-    override fun getPwEncryptionAlgorithm(): PwEncryptionAlgorithm {
-        return PwEncryptionAlgorithm.Twofish
+    override fun getPwEncryptionAlgorithm(): EncryptionAlgorithm {
+        return EncryptionAlgorithm.Twofish
     }
 
     companion object {
 
-        val CIPHER_UUID: UUID = Types.bytestoUUID(
-                byteArrayOf(0xAD.toByte(), 0x68.toByte(), 0xF2.toByte(), 0x9F.toByte(), 0x57.toByte(), 0x6F.toByte(), 0x4B.toByte(), 0xB9.toByte(), 0xA3.toByte(), 0x6A.toByte(), 0xD4.toByte(), 0x7A.toByte(), 0xF9.toByte(), 0x65.toByte(), 0x34.toByte(), 0x6C.toByte()))
+        val CIPHER_UUID: UUID = bytes16ToUuid(
+                byteArrayOf(0xAD.toByte(),
+                        0x68.toByte(),
+                        0xF2.toByte(),
+                        0x9F.toByte(),
+                        0x57.toByte(),
+                        0x6F.toByte(),
+                        0x4B.toByte(),
+                        0xB9.toByte(),
+                        0xA3.toByte(),
+                        0x6A.toByte(),
+                        0xD4.toByte(),
+                        0x7A.toByte(),
+                        0xF9.toByte(),
+                        0x65.toByte(),
+                        0x34.toByte(),
+                        0x6C.toByte()))
     }
 }

app/src/main/java/com/kunzisoft/keepass/crypto/keyDerivation/AesKdf.kt

@@ -23,7 +23,7 @@ import android.content.res.Resources
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.crypto.CryptoUtil
 import com.kunzisoft.keepass.crypto.finalkey.FinalKeyFactory
-import com.kunzisoft.keepass.utils.Types
+import com.kunzisoft.keepass.stream.bytes16ToUuid
 import java.io.IOException
 import java.security.SecureRandom
 import java.util.*
@@ -32,7 +32,7 @@ class AesKdf internal constructor() : KdfEngine() {
 
     override val defaultParameters: KdfParameters
         get() {
-            return KdfParameters(uuid).apply {
+            return KdfParameters(uuid!!).apply {
                 setParamUUID()
                 setUInt32(PARAM_ROUNDS, DEFAULT_ROUNDS.toLong())
             }
@@ -88,7 +88,7 @@ class AesKdf internal constructor() : KdfEngine() {
 
         private const val DEFAULT_ROUNDS = 6000
 
-        val CIPHER_UUID: UUID = Types.bytestoUUID(
+        val CIPHER_UUID: UUID = bytes16ToUuid(
                 byteArrayOf(0xC9.toByte(),
                         0xD9.toByte(),
                         0xF3.toByte(),

app/src/main/java/com/kunzisoft/keepass/crypto/keyDerivation/Argon2Kdf.kt

@@ -21,7 +21,7 @@ package com.kunzisoft.keepass.crypto.keyDerivation
 
 import android.content.res.Resources
 import com.kunzisoft.keepass.R
-import com.kunzisoft.keepass.utils.Types
+import com.kunzisoft.keepass.stream.bytes16ToUuid
 import java.io.IOException
 import java.security.SecureRandom
 import java.util.*
@@ -30,7 +30,7 @@ class Argon2Kdf internal constructor() : KdfEngine() {
 
     override val defaultParameters: KdfParameters
         get() {
-            val p = KdfParameters(uuid)
+            val p = KdfParameters(uuid!!)
 
             p.setParamUUID()
             p.setUInt32(PARAM_PARALLELISM, DEFAULT_PARALLELISM)
@@ -126,7 +126,7 @@ class Argon2Kdf internal constructor() : KdfEngine() {
 
     companion object {
 
-        val CIPHER_UUID: UUID = Types.bytestoUUID(
+        val CIPHER_UUID: UUID = bytes16ToUuid(
                 byteArrayOf(0xEF.toByte(),
                         0x63.toByte(),
                         0x6D.toByte(),

app/src/main/java/com/kunzisoft/keepass/crypto/keyDerivation/KdfParameters.java

@@ -1,75 +0,0 @@
-/*
- * Copyright 2017 Brian Pellin, Jeremy Jamet / Kunzisoft.
- *
- * This file is part of KeePass DX.
- *
- *  KeePass DX is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  KeePass DX is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with KeePass DX.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-package com.kunzisoft.keepass.crypto.keyDerivation;
-
-import com.kunzisoft.keepass.utils.VariantDictionary;
-import com.kunzisoft.keepass.stream.LEDataInputStream;
-import com.kunzisoft.keepass.stream.LEDataOutputStream;
-import com.kunzisoft.keepass.utils.Types;
-
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.util.UUID;
-
-public class KdfParameters extends VariantDictionary {
-
-    private UUID kdfUUID;
-
-    private static final String ParamUUID = "$UUID";
-
-    KdfParameters(UUID uuid) {
-        kdfUUID = uuid;
-    }
-
-    public UUID getUUID() {
-        return kdfUUID;
-    }
-
-    protected void setParamUUID() {
-        setByteArray(ParamUUID, Types.UUIDtoBytes(kdfUUID));
-    }
-
-    public static KdfParameters deserialize(byte[] data) throws IOException {
-        ByteArrayInputStream bis = new ByteArrayInputStream(data);
-        LEDataInputStream lis = new LEDataInputStream(bis);
-
-        VariantDictionary d = VariantDictionary.deserialize(lis);
-        if (d == null) {
-            return null;
-        }
-
-        UUID uuid = Types.bytestoUUID(d.getByteArray(ParamUUID));
-
-        KdfParameters kdfP = new KdfParameters(uuid);
-        kdfP.copyTo(d);
-        return kdfP;
-    }
-
-    public static byte[] serialize(KdfParameters kdf) throws IOException {
-        ByteArrayOutputStream bos = new ByteArrayOutputStream();
-        LEDataOutputStream los = new LEDataOutputStream(bos);
-
-        KdfParameters.serialize(kdf, los);
-
-        return bos.toByteArray();
-    }
-
-}

app/src/main/java/com/kunzisoft/keepass/crypto/keyDerivation/KdfParameters.kt

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.crypto.keyDerivation
+
+import com.kunzisoft.keepass.stream.LittleEndianDataInputStream
+import com.kunzisoft.keepass.stream.LittleEndianDataOutputStream
+import com.kunzisoft.keepass.stream.bytes16ToUuid
+import com.kunzisoft.keepass.stream.uuidTo16Bytes
+import com.kunzisoft.keepass.utils.VariantDictionary
+import java.io.ByteArrayInputStream
+import java.io.ByteArrayOutputStream
+import java.io.IOException
+import java.util.*
+
+class KdfParameters internal constructor(val uuid: UUID) : VariantDictionary() {
+
+    fun setParamUUID() {
+        setByteArray(PARAM_UUID, uuidTo16Bytes(uuid))
+    }
+
+    companion object {
+
+        private const val PARAM_UUID = "\$UUID"
+
+        @Throws(IOException::class)
+        fun deserialize(data: ByteArray): KdfParameters? {
+            val bis = ByteArrayInputStream(data)
+            val lis = LittleEndianDataInputStream(bis)
+
+            val d = deserialize(lis) ?: return null
+
+            val uuid = bytes16ToUuid(d.getByteArray(PARAM_UUID))
+
+            val kdfP = KdfParameters(uuid)
+            kdfP.copyTo(d)
+            return kdfP
+        }
+
+        @Throws(IOException::class)
+        fun serialize(kdf: KdfParameters): ByteArray {
+            val bos = ByteArrayOutputStream()
+            val los = LittleEndianDataOutputStream(bos)
+
+            serialize(kdf, los)
+
+            return bos.toByteArray()
+        }
+    }
+
+}

app/src/main/java/com/kunzisoft/keepass/database/action/AssignPasswordInDatabaseRunnable.kt

@@ -32,9 +32,8 @@ open class AssignPasswordInDatabaseRunnable (
         withMasterPassword: Boolean,
         masterPassword: String?,
         withKeyFile: Boolean,
-        keyFile: Uri?,
-        save: Boolean)
-    : SaveDatabaseRunnable(context, database, save) {
+        keyFile: Uri?)
+    : SaveDatabaseRunnable(context, database, true) {
 
     private var mMasterPassword: String? = null
     protected var mKeyFile: Uri? = null
@@ -59,7 +58,7 @@ open class AssignPasswordInDatabaseRunnable (
             database.retrieveMasterKey(mMasterPassword, uriInputStream)
         } catch (e: Exception) {
             erase(mBackupKey)
-            setError(e.message)
+            setError(e)
         }
 
         super.onStartRun()

app/src/main/java/com/kunzisoft/keepass/database/action/CreateDatabaseRunnable.kt

@@ -28,24 +28,25 @@ import com.kunzisoft.keepass.database.element.Database
 class CreateDatabaseRunnable(context: Context,
                              private val mDatabase: Database,
                              databaseUri: Uri,
+                             private val databaseName: String,
+                             private val rootName: String,
                              withMasterPassword: Boolean,
                              masterPassword: String?,
                              withKeyFile: Boolean,
-                             keyFile: Uri?,
-                             save: Boolean)
-    : AssignPasswordInDatabaseRunnable(context, mDatabase, databaseUri, withMasterPassword, masterPassword, withKeyFile, keyFile, save) {
+                             keyFile: Uri?)
+    : AssignPasswordInDatabaseRunnable(context, mDatabase, databaseUri, withMasterPassword, masterPassword, withKeyFile, keyFile) {
 
     override fun onStartRun() {
         try {
             // Create new database record
             mDatabase.apply {
-                createData(mDatabaseUri)
+                createData(mDatabaseUri, databaseName, rootName)
                 // Set Database state
                 loaded = true
             }
         } catch (e: Exception) {
             mDatabase.closeAndClear()
-            setError(e.message)
+            setError(e)
         }
 
         super.onStartRun()

app/src/main/java/com/kunzisoft/keepass/database/action/LoadDatabaseRunnable.kt

@@ -25,7 +25,7 @@ import com.kunzisoft.keepass.app.database.CipherDatabaseAction
 import com.kunzisoft.keepass.app.database.CipherDatabaseEntity
 import com.kunzisoft.keepass.app.database.FileDatabaseHistoryAction
 import com.kunzisoft.keepass.database.element.Database
-import com.kunzisoft.keepass.database.exception.LoadDatabaseDuplicateUuidException
+import com.kunzisoft.keepass.database.exception.DuplicateUuidDatabaseException
 import com.kunzisoft.keepass.database.exception.LoadDatabaseException
 import com.kunzisoft.keepass.notifications.DatabaseOpenNotificationService
 import com.kunzisoft.keepass.settings.PreferencesUtil
@@ -62,7 +62,7 @@ class LoadDatabaseRunnable(private val context: Context,
                     mFixDuplicateUUID,
                     progressTaskUpdater)
         }
-        catch (e: LoadDatabaseDuplicateUuidException) {
+        catch (e: DuplicateUuidDatabaseException) {
             mDuplicateUuidAction?.invoke(result)
             setError(e)
         }

app/src/main/java/com/kunzisoft/keepass/database/action/ProgressDialogThread.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.database.action
 
 import android.content.*
@@ -11,27 +30,35 @@ import androidx.fragment.app.FragmentActivity
 import com.kunzisoft.keepass.app.database.CipherDatabaseEntity
 import com.kunzisoft.keepass.crypto.keyDerivation.KdfEngine
 import com.kunzisoft.keepass.database.element.*
+import com.kunzisoft.keepass.database.element.database.CompressionAlgorithm
+import com.kunzisoft.keepass.database.element.node.Node
+import com.kunzisoft.keepass.database.element.node.NodeId
+import com.kunzisoft.keepass.database.element.node.Type
+import com.kunzisoft.keepass.database.element.security.EncryptionAlgorithm
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_ASSIGN_PASSWORD_TASK
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_COPY_NODES_TASK
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_CREATE_ENTRY_TASK
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_CREATE_GROUP_TASK
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_CREATE_TASK
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_DELETE_ENTRY_HISTORY
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_DELETE_NODES_TASK
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_LOAD_TASK
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_MOVE_NODES_TASK
-import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_SAVE_COLOR_TASK
-import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_SAVE_COMPRESSION_TASK
-import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_SAVE_DEFAULT_USERNAME_TASK
-import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_SAVE_DESCRIPTION_TASK
-import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_SAVE_ENCRYPTION_TASK
-import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_SAVE_ITERATIONS_TASK
-import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_SAVE_KEY_DERIVATION_TASK
-import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_SAVE_MAX_HISTORY_ITEMS_TASK
-import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_SAVE_MAX_HISTORY_SIZE_TASK
-import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_SAVE_MEMORY_USAGE_TASK
-import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_SAVE_NAME_TASK
-import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_SAVE_PARALLELISM_TASK
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_RESTORE_ENTRY_HISTORY
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_SAVE
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_COLOR_TASK
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_COMPRESSION_TASK
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_DEFAULT_USERNAME_TASK
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_DESCRIPTION_TASK
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_ENCRYPTION_TASK
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_ITERATIONS_TASK
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_KEY_DERIVATION_TASK
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_MAX_HISTORY_ITEMS_TASK
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_MAX_HISTORY_SIZE_TASK
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_MEMORY_USAGE_TASK
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_NAME_TASK
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_PARALLELISM_TASK
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_ENTRY_TASK
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_UPDATE_GROUP_TASK
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.getBundleFromListNodes
@@ -44,10 +71,10 @@ import com.kunzisoft.keepass.utils.DATABASE_STOP_TASK_ACTION
 import java.util.*
 import kotlin.collections.ArrayList
 
+class ProgressDialogThread(private val activity: FragmentActivity) {
 
-class ProgressDialogThread(private val activity: FragmentActivity,
-                           var onActionFinish: (actionTask: String,
-                                                result: ActionRunnable.Result) -> Unit) {
+    var onActionFinish: ((actionTask: String,
+                          result: ActionRunnable.Result) -> Unit)? = null
 
     private var intentDatabaseTask = Intent(activity, DatabaseTaskNotificationService::class.java)
 
@@ -68,7 +95,7 @@ class ProgressDialogThread(private val activity: FragmentActivity,
         }
 
         override fun onStopAction(actionTask: String, result: ActionRunnable.Result) {
-            onActionFinish.invoke(actionTask, result)
+            onActionFinish?.invoke(actionTask, result)
             // Remove the progress task
             ProgressTaskDialogFragment.stop(activity)
             TimeoutHelper.releaseTemporarilyDisableTimeoutAndLockIfTimeout(activity)
@@ -172,7 +199,11 @@ class ProgressDialogThread(private val activity: FragmentActivity,
 
         unBindService()
 
+        try {
             activity.unregisterReceiver(databaseTaskBroadcastReceiver)
+        } catch (e: IllegalArgumentException) {
+            // If receiver not register, do nothing
+        }
     }
 
     @Synchronized
@@ -250,8 +281,8 @@ class ProgressDialogThread(private val activity: FragmentActivity,
       ----
     */
 
-    fun startDatabaseCreateGroup(newGroup: GroupVersioned,
-                                 parent: GroupVersioned,
+    fun startDatabaseCreateGroup(newGroup: Group,
+                                 parent: Group,
                                  save: Boolean) {
         start(Bundle().apply {
             putParcelable(DatabaseTaskNotificationService.GROUP_KEY, newGroup)
@@ -261,8 +292,8 @@ class ProgressDialogThread(private val activity: FragmentActivity,
                 , ACTION_DATABASE_CREATE_GROUP_TASK)
     }
 
-    fun startDatabaseUpdateGroup(oldGroup: GroupVersioned,
-                                 groupToUpdate: GroupVersioned,
+    fun startDatabaseUpdateGroup(oldGroup: Group,
+                                 groupToUpdate: Group,
                                  save: Boolean) {
         start(Bundle().apply {
             putParcelable(DatabaseTaskNotificationService.GROUP_ID_KEY, oldGroup.nodeId)
@@ -272,8 +303,8 @@ class ProgressDialogThread(private val activity: FragmentActivity,
                 , ACTION_DATABASE_UPDATE_GROUP_TASK)
     }
 
-    fun startDatabaseCreateEntry(newEntry: EntryVersioned,
-                                 parent: GroupVersioned,
+    fun startDatabaseCreateEntry(newEntry: Entry,
+                                 parent: Group,
                                  save: Boolean) {
         start(Bundle().apply {
             putParcelable(DatabaseTaskNotificationService.ENTRY_KEY, newEntry)
@@ -283,8 +314,8 @@ class ProgressDialogThread(private val activity: FragmentActivity,
                 , ACTION_DATABASE_CREATE_ENTRY_TASK)
     }
 
-    fun startDatabaseUpdateEntry(oldEntry: EntryVersioned,
-                                 entryToUpdate: EntryVersioned,
+    fun startDatabaseUpdateEntry(oldEntry: Entry,
+                                 entryToUpdate: Entry,
                                  save: Boolean) {
         start(Bundle().apply {
             putParcelable(DatabaseTaskNotificationService.ENTRY_ID_KEY, oldEntry.nodeId)
@@ -295,20 +326,20 @@ class ProgressDialogThread(private val activity: FragmentActivity,
     }
 
     private fun startDatabaseActionListNodes(actionTask: String,
-                                             nodesPaste: List<NodeVersioned>,
-                                             newParent: GroupVersioned?,
+                                             nodesPaste: List<Node>,
+                                             newParent: Group?,
                                              save: Boolean) {
-        val groupsIdToCopy = ArrayList<PwNodeId<*>>()
-        val entriesIdToCopy = ArrayList<PwNodeId<UUID>>()
+        val groupsIdToCopy = ArrayList<NodeId<*>>()
+        val entriesIdToCopy = ArrayList<NodeId<UUID>>()
         nodesPaste.forEach { nodeVersioned ->
             when (nodeVersioned.type) {
                 Type.GROUP -> {
-                    (nodeVersioned as GroupVersioned).nodeId?.let { groupId ->
+                    (nodeVersioned as Group).nodeId?.let { groupId ->
                         groupsIdToCopy.add(groupId)
                     }
                 }
                 Type.ENTRY -> {
-                    entriesIdToCopy.add((nodeVersioned as EntryVersioned).nodeId)
+                    entriesIdToCopy.add((nodeVersioned as Entry).nodeId)
                 }
             }
         }
@@ -325,23 +356,51 @@ class ProgressDialogThread(private val activity: FragmentActivity,
         , actionTask)
     }
 
-    fun startDatabaseCopyNodes(nodesToCopy: List<NodeVersioned>,
-                               newParent: GroupVersioned,
+    fun startDatabaseCopyNodes(nodesToCopy: List<Node>,
+                               newParent: Group,
                                save: Boolean) {
         startDatabaseActionListNodes(ACTION_DATABASE_COPY_NODES_TASK, nodesToCopy, newParent, save)
     }
 
-    fun startDatabaseMoveNodes(nodesToMove: List<NodeVersioned>,
-                               newParent: GroupVersioned,
+    fun startDatabaseMoveNodes(nodesToMove: List<Node>,
+                               newParent: Group,
                                save: Boolean) {
         startDatabaseActionListNodes(ACTION_DATABASE_MOVE_NODES_TASK, nodesToMove, newParent, save)
     }
 
-    fun startDatabaseDeleteNodes(nodesToDelete: List<NodeVersioned>,
+    fun startDatabaseDeleteNodes(nodesToDelete: List<Node>,
                                  save: Boolean) {
         startDatabaseActionListNodes(ACTION_DATABASE_DELETE_NODES_TASK, nodesToDelete, null, save)
     }
 
+    /*
+      -----------------
+        Entry History Settings
+      -----------------
+    */
+
+    fun startDatabaseRestoreEntryHistory(mainEntry: Entry,
+                                         entryHistoryPosition: Int,
+                                         save: Boolean) {
+        start(Bundle().apply {
+            putParcelable(DatabaseTaskNotificationService.ENTRY_ID_KEY, mainEntry.nodeId)
+            putInt(DatabaseTaskNotificationService.ENTRY_HISTORY_POSITION_KEY, entryHistoryPosition)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
+        }
+                , ACTION_DATABASE_RESTORE_ENTRY_HISTORY)
+    }
+
+    fun startDatabaseDeleteEntryHistory(mainEntry: Entry,
+                                        entryHistoryPosition: Int,
+                                        save: Boolean) {
+        start(Bundle().apply {
+            putParcelable(DatabaseTaskNotificationService.ENTRY_ID_KEY, mainEntry.nodeId)
+            putInt(DatabaseTaskNotificationService.ENTRY_HISTORY_POSITION_KEY, entryHistoryPosition)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
+        }
+                , ACTION_DATABASE_DELETE_ENTRY_HISTORY)
+    }
+
     /*
       -----------------
         Main Settings
@@ -349,66 +408,80 @@ class ProgressDialogThread(private val activity: FragmentActivity,
     */
 
     fun startDatabaseSaveName(oldName: String,
-                              newName: String) {
+                              newName: String,
+                              save: Boolean) {
         start(Bundle().apply {
             putString(DatabaseTaskNotificationService.OLD_ELEMENT_KEY, oldName)
             putString(DatabaseTaskNotificationService.NEW_ELEMENT_KEY, newName)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
         }
-                , ACTION_DATABASE_SAVE_NAME_TASK)
+                , ACTION_DATABASE_UPDATE_NAME_TASK)
     }
 
     fun startDatabaseSaveDescription(oldDescription: String,
-                                     newDescription: String) {
+                                     newDescription: String,
+                                     save: Boolean) {
         start(Bundle().apply {
             putString(DatabaseTaskNotificationService.OLD_ELEMENT_KEY, oldDescription)
             putString(DatabaseTaskNotificationService.NEW_ELEMENT_KEY, newDescription)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
         }
-                , ACTION_DATABASE_SAVE_DESCRIPTION_TASK)
+                , ACTION_DATABASE_UPDATE_DESCRIPTION_TASK)
     }
 
     fun startDatabaseSaveDefaultUsername(oldDefaultUsername: String,
-                                         newDefaultUsername: String) {
+                                         newDefaultUsername: String,
+                                         save: Boolean) {
         start(Bundle().apply {
             putString(DatabaseTaskNotificationService.OLD_ELEMENT_KEY, oldDefaultUsername)
             putString(DatabaseTaskNotificationService.NEW_ELEMENT_KEY, newDefaultUsername)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
         }
-                , ACTION_DATABASE_SAVE_DEFAULT_USERNAME_TASK)
+                , ACTION_DATABASE_UPDATE_DEFAULT_USERNAME_TASK)
     }
 
     fun startDatabaseSaveColor(oldColor: String,
-                               newColor: String) {
+                               newColor: String,
+                               save: Boolean) {
         start(Bundle().apply {
             putString(DatabaseTaskNotificationService.OLD_ELEMENT_KEY, oldColor)
             putString(DatabaseTaskNotificationService.NEW_ELEMENT_KEY, newColor)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
         }
-                , ACTION_DATABASE_SAVE_COLOR_TASK)
+                , ACTION_DATABASE_UPDATE_COLOR_TASK)
     }
 
-    fun startDatabaseSaveCompression(oldCompression: PwCompressionAlgorithm,
-                                     newCompression: PwCompressionAlgorithm) {
+    fun startDatabaseSaveCompression(oldCompression: CompressionAlgorithm,
+                                     newCompression: CompressionAlgorithm,
+                                     save: Boolean) {
         start(Bundle().apply {
             putSerializable(DatabaseTaskNotificationService.OLD_ELEMENT_KEY, oldCompression)
             putSerializable(DatabaseTaskNotificationService.NEW_ELEMENT_KEY, newCompression)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
         }
-                , ACTION_DATABASE_SAVE_COMPRESSION_TASK)
+                , ACTION_DATABASE_UPDATE_COMPRESSION_TASK)
     }
 
     fun startDatabaseSaveMaxHistoryItems(oldMaxHistoryItems: Int,
-                                         newMaxHistoryItems: Int) {
+                                         newMaxHistoryItems: Int,
+                                         save: Boolean) {
         start(Bundle().apply {
             putInt(DatabaseTaskNotificationService.OLD_ELEMENT_KEY, oldMaxHistoryItems)
             putInt(DatabaseTaskNotificationService.NEW_ELEMENT_KEY, newMaxHistoryItems)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
         }
-                , ACTION_DATABASE_SAVE_MAX_HISTORY_ITEMS_TASK)
+                , ACTION_DATABASE_UPDATE_MAX_HISTORY_ITEMS_TASK)
     }
 
     fun startDatabaseSaveMaxHistorySize(oldMaxHistorySize: Long,
-                                        newMaxHistorySize: Long) {
+                                        newMaxHistorySize: Long,
+                                        save: Boolean) {
         start(Bundle().apply {
             putLong(DatabaseTaskNotificationService.OLD_ELEMENT_KEY, oldMaxHistorySize)
             putLong(DatabaseTaskNotificationService.NEW_ELEMENT_KEY, newMaxHistorySize)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
         }
-                , ACTION_DATABASE_SAVE_MAX_HISTORY_SIZE_TASK)
+                , ACTION_DATABASE_UPDATE_MAX_HISTORY_SIZE_TASK)
     }
 
     /*
@@ -417,48 +490,68 @@ class ProgressDialogThread(private val activity: FragmentActivity,
       -------------------
      */
 
-    fun startDatabaseSaveEncryption(oldEncryption: PwEncryptionAlgorithm,
-                                    newEncryption: PwEncryptionAlgorithm) {
+    fun startDatabaseSaveEncryption(oldEncryption: EncryptionAlgorithm,
+                                    newEncryption: EncryptionAlgorithm,
+                                    save: Boolean) {
         start(Bundle().apply {
             putSerializable(DatabaseTaskNotificationService.OLD_ELEMENT_KEY, oldEncryption)
             putSerializable(DatabaseTaskNotificationService.NEW_ELEMENT_KEY, newEncryption)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
         }
-                , ACTION_DATABASE_SAVE_ENCRYPTION_TASK)
+                , ACTION_DATABASE_UPDATE_ENCRYPTION_TASK)
     }
 
     fun startDatabaseSaveKeyDerivation(oldKeyDerivation: KdfEngine,
-                                       newKeyDerivation: KdfEngine) {
+                                       newKeyDerivation: KdfEngine,
+                                       save: Boolean) {
         start(Bundle().apply {
             putSerializable(DatabaseTaskNotificationService.OLD_ELEMENT_KEY, oldKeyDerivation)
             putSerializable(DatabaseTaskNotificationService.NEW_ELEMENT_KEY, newKeyDerivation)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
         }
-                , ACTION_DATABASE_SAVE_KEY_DERIVATION_TASK)
+                , ACTION_DATABASE_UPDATE_KEY_DERIVATION_TASK)
     }
 
     fun startDatabaseSaveIterations(oldIterations: Long,
-                                    newIterations: Long) {
+                                    newIterations: Long,
+                                    save: Boolean) {
         start(Bundle().apply {
             putLong(DatabaseTaskNotificationService.OLD_ELEMENT_KEY, oldIterations)
             putLong(DatabaseTaskNotificationService.NEW_ELEMENT_KEY, newIterations)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
         }
-                , ACTION_DATABASE_SAVE_ITERATIONS_TASK)
+                , ACTION_DATABASE_UPDATE_ITERATIONS_TASK)
     }
 
     fun startDatabaseSaveMemoryUsage(oldMemoryUsage: Long,
-                                     newMemoryUsage: Long) {
+                                     newMemoryUsage: Long,
+                                     save: Boolean) {
         start(Bundle().apply {
             putLong(DatabaseTaskNotificationService.OLD_ELEMENT_KEY, oldMemoryUsage)
             putLong(DatabaseTaskNotificationService.NEW_ELEMENT_KEY, newMemoryUsage)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
         }
-                , ACTION_DATABASE_SAVE_MEMORY_USAGE_TASK)
+                , ACTION_DATABASE_UPDATE_MEMORY_USAGE_TASK)
     }
 
     fun startDatabaseSaveParallelism(oldParallelism: Int,
-                                     newParallelism: Int) {
+                                     newParallelism: Int,
+                                     save: Boolean) {
         start(Bundle().apply {
             putInt(DatabaseTaskNotificationService.OLD_ELEMENT_KEY, oldParallelism)
             putInt(DatabaseTaskNotificationService.NEW_ELEMENT_KEY, newParallelism)
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
         }
-                , ACTION_DATABASE_SAVE_PARALLELISM_TASK)
+                , ACTION_DATABASE_UPDATE_PARALLELISM_TASK)
+    }
+
+    /**
+     * Save Database without parameter
+     */
+    fun startDatabaseSave(save: Boolean) {
+        start(Bundle().apply {
+            putBoolean(DatabaseTaskNotificationService.SAVE_DATABASE_KEY, save)
+        }
+                , ACTION_DATABASE_SAVE)
     }
 }

app/src/main/java/com/kunzisoft/keepass/database/action/SaveDatabaseRunnable.kt

@@ -21,9 +21,8 @@ package com.kunzisoft.keepass.database.action
 
 import android.content.Context
 import com.kunzisoft.keepass.database.element.Database
-import com.kunzisoft.keepass.database.exception.DatabaseOutputException
+import com.kunzisoft.keepass.database.exception.DatabaseException
 import com.kunzisoft.keepass.tasks.ActionRunnable
-import java.io.IOException
 
 open class SaveDatabaseRunnable(protected var context: Context,
                                 protected var database: Database,
@@ -38,10 +37,8 @@ open class SaveDatabaseRunnable(protected var context: Context,
         if (saveDatabase && result.isSuccess) {
             try {
                 database.saveData(context.contentResolver)
-            } catch (e: IOException) {
-                setError(e.message)
-            } catch (e: DatabaseOutputException) {
-                setError(e.message)
+            } catch (e: DatabaseException) {
+                setError(e)
             }
         }
     }

app/src/main/java/com/kunzisoft/keepass/database/action/UpdateCompressionBinariesDatabaseRunnable.kt

@@ -0,0 +1,66 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *     
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.database.action
+
+import android.content.Context
+import com.kunzisoft.keepass.database.element.Database
+import com.kunzisoft.keepass.database.element.database.CompressionAlgorithm
+
+class UpdateCompressionBinariesDatabaseRunnable (
+        context: Context,
+        database: Database,
+        private val oldCompressionAlgorithm: CompressionAlgorithm,
+        private val newCompressionAlgorithm: CompressionAlgorithm,
+        saveDatabase: Boolean)
+    : SaveDatabaseRunnable(context, database, saveDatabase) {
+
+    override fun onStartRun() {
+        // Set new compression
+        if (database.allowDataCompression) {
+            try {
+                database.apply {
+                    updateDataBinaryCompression(oldCompressionAlgorithm, newCompressionAlgorithm)
+                    compressionAlgorithm = newCompressionAlgorithm
+                }
+            } catch (e: Exception) {
+                setError(e)
+            }
+        }
+
+        super.onStartRun()
+    }
+
+    override fun onFinishRun() {
+        super.onFinishRun()
+
+        if (database.allowDataCompression) {
+            if (!result.isSuccess) {
+                try {
+                    database.apply {
+                        compressionAlgorithm = oldCompressionAlgorithm
+                        updateDataBinaryCompression(newCompressionAlgorithm, oldCompressionAlgorithm)
+                    }
+                } catch (e: Exception) {
+                    setError(e)
+                }
+            }
+        }
+    }
+}

app/src/main/java/com/kunzisoft/keepass/database/action/history/DeleteEntryHistoryDatabaseRunnable.kt

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2020 Jeremy Jamet / Kunzisoft.
+ *     
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.database.action.history
+
+import android.content.Context
+import com.kunzisoft.keepass.database.action.SaveDatabaseRunnable
+import com.kunzisoft.keepass.database.element.Database
+import com.kunzisoft.keepass.database.element.Entry
+
+class DeleteEntryHistoryDatabaseRunnable (
+        context: Context,
+        database: Database,
+        private val mainEntry: Entry,
+        private val entryHistoryPosition: Int,
+        saveDatabase: Boolean)
+    : SaveDatabaseRunnable(context, database, saveDatabase) {
+
+    override fun onStartRun() {
+        try {
+            mainEntry.removeEntryFromHistory(entryHistoryPosition)
+        } catch (e: Exception) {
+            setError(e)
+        }
+
+        super.onStartRun()
+    }
+}

app/src/main/java/com/kunzisoft/keepass/database/action/history/RestoreEntryHistoryDatabaseRunnable.kt

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2020 Jeremy Jamet / Kunzisoft.
+ *     
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.database.action.history
+
+import android.content.Context
+import com.kunzisoft.keepass.database.action.node.UpdateEntryRunnable
+import com.kunzisoft.keepass.database.element.Database
+import com.kunzisoft.keepass.database.element.Entry
+import com.kunzisoft.keepass.tasks.ActionRunnable
+
+class RestoreEntryHistoryDatabaseRunnable (
+        private val context: Context,
+        private val database: Database,
+        private val mainEntry: Entry,
+        private val entryHistoryPosition: Int,
+        private val saveDatabase: Boolean)
+    : ActionRunnable() {
+
+    private var updateEntryRunnable: UpdateEntryRunnable? = null
+
+    override fun onStartRun() {
+        try {
+            val historyToRestore = Entry(mainEntry.getHistory()[entryHistoryPosition])
+            // Copy history of main entry in the restore entry
+            mainEntry.getHistory().forEach {
+                historyToRestore.addEntryToHistory(it)
+            }
+            // Update the entry with the fresh formatted entry to restore
+            updateEntryRunnable = UpdateEntryRunnable(context,
+                    database,
+                    mainEntry,
+                    historyToRestore,
+                    saveDatabase,
+                    null)
+
+            updateEntryRunnable?.onStartRun()
+
+        } catch (e: Exception) {
+            setError(e)
+        }
+    }
+
+    override fun onActionRun() {
+        updateEntryRunnable?.onActionRun()
+    }
+
+    override fun onFinishRun() {
+        updateEntryRunnable?.onFinishRun()
+    }
+}

app/src/main/java/com/kunzisoft/keepass/database/action/node/ActionNodeDatabaseRunnable.kt

@@ -1,3 +1,22 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.database.action.node
 
 import android.content.Context

app/src/main/java/com/kunzisoft/keepass/database/action/node/AddEntryRunnable.kt

@@ -21,15 +21,15 @@ package com.kunzisoft.keepass.database.action.node
 
 import android.content.Context
 import com.kunzisoft.keepass.database.element.Database
-import com.kunzisoft.keepass.database.element.EntryVersioned
-import com.kunzisoft.keepass.database.element.GroupVersioned
-import com.kunzisoft.keepass.database.element.NodeVersioned
+import com.kunzisoft.keepass.database.element.Entry
+import com.kunzisoft.keepass.database.element.Group
+import com.kunzisoft.keepass.database.element.node.Node
 
 class AddEntryRunnable constructor(
         context: Context,
         database: Database,
-        private val mNewEntry: EntryVersioned,
-        private val mParent: GroupVersioned,
+        private val mNewEntry: Entry,
+        private val mParent: Group,
         save: Boolean,
         afterActionNodesFinish: AfterActionNodesFinish?)
     : ActionNodeDatabaseRunnable(context, database, afterActionNodesFinish, save) {
@@ -47,8 +47,8 @@ class AddEntryRunnable constructor(
             }
         }
 
-        val oldNodesReturn = ArrayList<NodeVersioned>()
-        val newNodesReturn = ArrayList<NodeVersioned>()
+        val oldNodesReturn = ArrayList<Node>()
+        val newNodesReturn = ArrayList<Node>()
         newNodesReturn.add(mNewEntry)
         return ActionNodesValues(oldNodesReturn, newNodesReturn)
     }

app/src/main/java/com/kunzisoft/keepass/database/action/node/AddGroupRunnable.kt

@@ -21,14 +21,14 @@ package com.kunzisoft.keepass.database.action.node
 
 import android.content.Context
 import com.kunzisoft.keepass.database.element.Database
-import com.kunzisoft.keepass.database.element.GroupVersioned
-import com.kunzisoft.keepass.database.element.NodeVersioned
+import com.kunzisoft.keepass.database.element.Group
+import com.kunzisoft.keepass.database.element.node.Node
 
 class AddGroupRunnable constructor(
         context: Context,
         database: Database,
-        private val mNewGroup: GroupVersioned,
-        private val mParent: GroupVersioned,
+        private val mNewGroup: Group,
+        private val mParent: Group,
         save: Boolean,
         afterActionNodesFinish: AfterActionNodesFinish?)
     : ActionNodeDatabaseRunnable(context, database, afterActionNodesFinish, save) {
@@ -44,8 +44,8 @@ class AddGroupRunnable constructor(
             database.removeGroupFrom(mNewGroup, mParent)
         }
 
-        val oldNodesReturn = ArrayList<NodeVersioned>()
-        val newNodesReturn = ArrayList<NodeVersioned>()
+        val oldNodesReturn = ArrayList<Node>()
+        val newNodesReturn = ArrayList<Node>()
         newNodesReturn.add(mNewGroup)
         return ActionNodesValues(oldNodesReturn, newNodesReturn)
     }

app/src/main/java/com/kunzisoft/keepass/database/action/node/AfterActionNodesFinish.kt

@@ -19,7 +19,7 @@
  */
 package com.kunzisoft.keepass.database.action.node
 
-import com.kunzisoft.keepass.database.element.NodeVersioned
+import com.kunzisoft.keepass.database.element.node.Node
 import com.kunzisoft.keepass.tasks.ActionRunnable
 
 /**
@@ -30,7 +30,7 @@ import com.kunzisoft.keepass.tasks.ActionRunnable
  * - Move : @param oldNodes empty, @param newNodes NodesToMove
  * - Update : @param oldNodes NodesToUpdate, @param newNodes NodesUpdated
  */
-class ActionNodesValues(val oldNodes: List<NodeVersioned>, val newNodes: List<NodeVersioned>)
+class ActionNodesValues(val oldNodes: List<Node>, val newNodes: List<Node>)
 
 abstract class AfterActionNodesFinish {
     abstract fun onActionNodesFinish(result: ActionRunnable.Result, actionNodesValues: ActionNodesValues)

app/src/main/java/com/kunzisoft/keepass/database/action/node/CopyNodesRunnable.kt

@@ -22,19 +22,21 @@ package com.kunzisoft.keepass.database.action.node
 import android.content.Context
 import android.util.Log
 import com.kunzisoft.keepass.database.element.*
-import com.kunzisoft.keepass.database.exception.CopyDatabaseEntryException
-import com.kunzisoft.keepass.database.exception.CopyDatabaseGroupException
+import com.kunzisoft.keepass.database.element.node.Node
+import com.kunzisoft.keepass.database.element.node.Type
+import com.kunzisoft.keepass.database.exception.CopyEntryDatabaseException
+import com.kunzisoft.keepass.database.exception.CopyGroupDatabaseException
 
 class CopyNodesRunnable constructor(
         context: Context,
         database: Database,
-        private val mNodesToCopy: List<NodeVersioned>,
-        private val mNewParent: GroupVersioned,
+        private val mNodesToCopy: List<Node>,
+        private val mNewParent: Group,
         save: Boolean,
         afterActionNodesFinish: AfterActionNodesFinish?)
     : ActionNodeDatabaseRunnable(context, database, afterActionNodesFinish, save) {
 
-    private var mEntriesCopied = ArrayList<EntryVersioned>()
+    private var mEntriesCopied = ArrayList<Entry>()
 
     override fun nodeAction() {
 
@@ -42,7 +44,7 @@ class CopyNodesRunnable constructor(
             when (currentNode.type) {
                 Type.GROUP -> {
                     Log.e(TAG, "Copy not allowed for group")// Only finish thread
-                    setError(CopyDatabaseGroupException())
+                    setError(CopyGroupDatabaseException())
                     break@foreachNode
                 }
                 Type.ENTRY -> {
@@ -51,18 +53,18 @@ class CopyNodesRunnable constructor(
                         // Update entry with new values
                         mNewParent.touch(modified = false, touchParents = true)
 
-                        val entryCopied = database.copyEntryTo(currentNode as EntryVersioned, mNewParent)
+                        val entryCopied = database.copyEntryTo(currentNode as Entry, mNewParent)
                         if (entryCopied != null) {
                             entryCopied.touch(modified = true, touchParents = true)
                             mEntriesCopied.add(entryCopied)
                         } else {
                             Log.e(TAG, "Unable to create a copy of the entry")
-                            setError(CopyDatabaseEntryException())
+                            setError(CopyEntryDatabaseException())
                             break@foreachNode
                         }
                     } else {
                         // Only finish thread
-                        setError(CopyDatabaseEntryException())
+                        setError(CopyEntryDatabaseException())
                         break@foreachNode
                     }
                 }

app/src/main/java/com/kunzisoft/keepass/database/action/node/DeleteNodesRunnable.kt

@@ -21,18 +21,20 @@ package com.kunzisoft.keepass.database.action.node
 
 import android.content.Context
 import com.kunzisoft.keepass.database.element.*
+import com.kunzisoft.keepass.database.element.node.Node
+import com.kunzisoft.keepass.database.element.node.Type
 
 class DeleteNodesRunnable(context: Context,
                           database: Database,
-                          private val mNodesToDelete: List<NodeVersioned>,
+                          private val mNodesToDelete: List<Node>,
                           save: Boolean,
                           afterActionNodesFinish: AfterActionNodesFinish)
     : ActionNodeDatabaseRunnable(context, database, afterActionNodesFinish, save) {
 
-    private var mParent: GroupVersioned? = null
+    private var mParent: Group? = null
     private var mCanRecycle: Boolean = false
 
-    private var mNodesToDeleteBackup = ArrayList<NodeVersioned>()
+    private var mNodesToDeleteBackup = ArrayList<Node>()
 
     override fun nodeAction() {
 
@@ -43,7 +45,7 @@ class DeleteNodesRunnable(context: Context,
             when (currentNode.type) {
                 Type.GROUP -> {
                     // Create a copy to keep the old ref and remove it visually
-                    mNodesToDeleteBackup.add(GroupVersioned(currentNode as GroupVersioned))
+                    mNodesToDeleteBackup.add(Group(currentNode as Group))
                     // Remove Node from parent
                     mCanRecycle = database.canRecycle(currentNode)
                     if (mCanRecycle) {
@@ -54,7 +56,7 @@ class DeleteNodesRunnable(context: Context,
                 }
                 Type.ENTRY -> {
                     // Create a copy to keep the old ref and remove it visually
-                    mNodesToDeleteBackup.add(EntryVersioned(currentNode as EntryVersioned))
+                    mNodesToDeleteBackup.add(Entry(currentNode as Entry))
                     // Remove Node from parent
                     mCanRecycle = database.canRecycle(currentNode)
                     if (mCanRecycle) {
@@ -74,10 +76,10 @@ class DeleteNodesRunnable(context: Context,
                     mNodesToDeleteBackup.forEach { backupNode ->
                         when (backupNode.type) {
                             Type.GROUP -> {
-                                database.undoRecycle(backupNode as GroupVersioned, it)
+                                database.undoRecycle(backupNode as Group, it)
                             }
                             Type.ENTRY -> {
-                                database.undoRecycle(backupNode as EntryVersioned, it)
+                                database.undoRecycle(backupNode as Entry, it)
                             }
                         }
                     }

app/src/main/java/com/kunzisoft/keepass/database/action/node/MoveNodesRunnable.kt

@@ -22,20 +22,21 @@ package com.kunzisoft.keepass.database.action.node
 import android.content.Context
 import android.util.Log
 import com.kunzisoft.keepass.database.element.*
-import com.kunzisoft.keepass.database.exception.LoadDatabaseException
-import com.kunzisoft.keepass.database.exception.MoveDatabaseEntryException
-import com.kunzisoft.keepass.database.exception.MoveDatabaseGroupException
+import com.kunzisoft.keepass.database.element.node.Node
+import com.kunzisoft.keepass.database.element.node.Type
+import com.kunzisoft.keepass.database.exception.EntryDatabaseException
+import com.kunzisoft.keepass.database.exception.MoveGroupDatabaseException
 
 class MoveNodesRunnable constructor(
         context: Context,
         database: Database,
-        private val mNodesToMove: List<NodeVersioned>,
-        private val mNewParent: GroupVersioned,
+        private val mNodesToMove: List<Node>,
+        private val mNewParent: Group,
         save: Boolean,
         afterActionNodesFinish: AfterActionNodesFinish?)
     : ActionNodeDatabaseRunnable(context, database, afterActionNodesFinish, save) {
 
-    private var mOldParent: GroupVersioned? = null
+    private var mOldParent: Group? = null
 
     override fun nodeAction() {
 
@@ -45,7 +46,7 @@ class MoveNodesRunnable constructor(
 
             when (nodeToMove.type) {
                 Type.GROUP -> {
-                    val groupToMove = nodeToMove as GroupVersioned
+                    val groupToMove = nodeToMove as Group
                     // Move group in new parent if not in the current group
                     if (groupToMove != mNewParent
                             && !mNewParent.isContainedIn(groupToMove)) {
@@ -53,12 +54,12 @@ class MoveNodesRunnable constructor(
                         database.moveGroupTo(groupToMove, mNewParent)
                     } else {
                         // Only finish thread
-                        setError(MoveDatabaseGroupException())
+                        setError(MoveGroupDatabaseException())
                         break@foreachNode
                     }
                 }
                 Type.ENTRY -> {
-                    val entryToMove = nodeToMove as EntryVersioned
+                    val entryToMove = nodeToMove as Entry
                     // Move only if the parent change
                     if (mOldParent != mNewParent
                             // and root can contains entry
@@ -67,7 +68,7 @@ class MoveNodesRunnable constructor(
                         database.moveEntryTo(entryToMove, mNewParent)
                     } else {
                         // Only finish thread
-                        setError(MoveDatabaseEntryException())
+                        setError(EntryDatabaseException())
                         break@foreachNode
                     }
                 }
@@ -83,8 +84,8 @@ class MoveNodesRunnable constructor(
                     if (mOldParent != null &&
                             mOldParent != nodeToMove.parent) {
                         when (nodeToMove.type) {
-                            Type.GROUP -> database.moveGroupTo(nodeToMove as GroupVersioned, mOldParent!!)
-                            Type.ENTRY -> database.moveEntryTo(nodeToMove as EntryVersioned, mOldParent!!)
+                            Type.GROUP -> database.moveGroupTo(nodeToMove as Group, mOldParent!!)
+                            Type.ENTRY -> database.moveEntryTo(nodeToMove as Entry, mOldParent!!)
                         }
                     }
                 }

app/src/main/java/com/kunzisoft/keepass/database/action/node/NodeHandler.kt

@@ -17,7 +17,7 @@
  *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-package com.kunzisoft.keepass.database
+package com.kunzisoft.keepass.database.action.node
 
 
 /** "Delegate" class for operating on each group when traversing all of

app/src/main/java/com/kunzisoft/keepass/database/action/node/UpdateEntryRunnable.kt

@@ -21,20 +21,20 @@ package com.kunzisoft.keepass.database.action.node
 
 import android.content.Context
 import com.kunzisoft.keepass.database.element.Database
-import com.kunzisoft.keepass.database.element.EntryVersioned
-import com.kunzisoft.keepass.database.element.NodeVersioned
+import com.kunzisoft.keepass.database.element.Entry
+import com.kunzisoft.keepass.database.element.node.Node
 
 class UpdateEntryRunnable constructor(
         context: Context,
         database: Database,
-        private val mOldEntry: EntryVersioned,
-        private val mNewEntry: EntryVersioned,
+        private val mOldEntry: Entry,
+        private val mNewEntry: Entry,
         save: Boolean,
         afterActionNodesFinish: AfterActionNodesFinish?)
     : ActionNodeDatabaseRunnable(context, database, afterActionNodesFinish, save) {
 
     // Keep backup of original values in case save fails
-    private var mBackupEntryHistory: EntryVersioned = EntryVersioned(mOldEntry)
+    private var mBackupEntryHistory: Entry = Entry(mOldEntry)
 
     override fun nodeAction() {
         // WARNING : Re attribute parent removed in entry edit activity to save memory
@@ -45,8 +45,8 @@ class UpdateEntryRunnable constructor(
         mNewEntry.touch(modified = true, touchParents = true)
 
         // Create an entry history (an entry history don't have history)
-        mOldEntry.addEntryToHistory(EntryVersioned(mBackupEntryHistory, copyHistory = false))
-        database.removeOldestHistory(mOldEntry)
+        mOldEntry.addEntryToHistory(Entry(mBackupEntryHistory, copyHistory = false))
+        database.removeOldestEntryHistory(mOldEntry)
 
         // Only change data in index
         database.updateEntry(mOldEntry)
@@ -59,9 +59,9 @@ class UpdateEntryRunnable constructor(
             database.updateEntry(mOldEntry)
         }
 
-        val oldNodesReturn = ArrayList<NodeVersioned>()
+        val oldNodesReturn = ArrayList<Node>()
         oldNodesReturn.add(mBackupEntryHistory)
-        val newNodesReturn = ArrayList<NodeVersioned>()
+        val newNodesReturn = ArrayList<Node>()
         newNodesReturn.add(mOldEntry)
         return ActionNodesValues(oldNodesReturn, newNodesReturn)
     }

app/src/main/java/com/kunzisoft/keepass/database/action/node/UpdateGroupRunnable.kt

@@ -21,20 +21,20 @@ package com.kunzisoft.keepass.database.action.node
 
 import android.content.Context
 import com.kunzisoft.keepass.database.element.Database
-import com.kunzisoft.keepass.database.element.GroupVersioned
-import com.kunzisoft.keepass.database.element.NodeVersioned
+import com.kunzisoft.keepass.database.element.Group
+import com.kunzisoft.keepass.database.element.node.Node
 
 class UpdateGroupRunnable constructor(
         context: Context,
         database: Database,
-        private val mOldGroup: GroupVersioned,
-        private val mNewGroup: GroupVersioned,
+        private val mOldGroup: Group,
+        private val mNewGroup: Group,
         save: Boolean,
         afterActionNodesFinish: AfterActionNodesFinish?)
     : ActionNodeDatabaseRunnable(context, database, afterActionNodesFinish, save) {
 
     // Keep backup of original values in case save fails
-    private val mBackupGroup: GroupVersioned = GroupVersioned(mOldGroup)
+    private val mBackupGroup: Group = Group(mOldGroup)
 
     override fun nodeAction() {
         // WARNING : Re attribute parent and children removed in group activity to save memory
@@ -56,9 +56,9 @@ class UpdateGroupRunnable constructor(
             database.updateGroup(mOldGroup)
         }
 
-        val oldNodesReturn = ArrayList<NodeVersioned>()
+        val oldNodesReturn = ArrayList<Node>()
         oldNodesReturn.add(mBackupGroup)
-        val newNodesReturn = ArrayList<NodeVersioned>()
+        val newNodesReturn = ArrayList<Node>()
         newNodesReturn.add(mOldGroup)
         return ActionNodesValues(oldNodesReturn, newNodesReturn)
     }

app/src/main/java/com/kunzisoft/keepass/database/cursor/EntryCursor.kt

@@ -1,12 +1,33 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.database.cursor
 
 import android.database.MatrixCursor
 import android.provider.BaseColumns
-import com.kunzisoft.keepass.database.element.PwEntry
-import com.kunzisoft.keepass.database.element.PwIconFactory
-import com.kunzisoft.keepass.database.element.PwNodeId
+import com.kunzisoft.keepass.database.element.DateInstant
+import com.kunzisoft.keepass.database.element.entry.EntryVersioned
+import com.kunzisoft.keepass.database.element.icon.IconImageFactory
+import com.kunzisoft.keepass.database.element.node.NodeId
+import java.util.*
 
-abstract class EntryCursor<EntryId, PwEntryV : PwEntry<*, EntryId, *, *>> : MatrixCursor(arrayOf(
+abstract class EntryCursor<EntryId, PwEntryV : EntryVersioned<*, EntryId, *, *>> : MatrixCursor(arrayOf(
         _ID,
         COLUMN_INDEX_UUID_MOST_SIGNIFICANT_BITS,
         COLUMN_INDEX_UUID_LEAST_SIGNIFICANT_BITS,
@@ -17,16 +38,18 @@ abstract class EntryCursor<EntryId, PwEntryV : PwEntry<*, EntryId, *, *>> : Matr
         COLUMN_INDEX_USERNAME,
         COLUMN_INDEX_PASSWORD,
         COLUMN_INDEX_URL,
-        COLUMN_INDEX_NOTES
+        COLUMN_INDEX_NOTES,
+        COLUMN_INDEX_EXPIRY_TIME,
+        COLUMN_INDEX_EXPIRES
     )) {
 
     protected var entryId: Long = 0
 
     abstract fun addEntry(entry: PwEntryV)
 
-    abstract fun getPwNodeId(): PwNodeId<EntryId>
+    abstract fun getPwNodeId(): NodeId<EntryId>
 
-    open fun populateEntry(pwEntry: PwEntryV, iconFactory: PwIconFactory) {
+    open fun populateEntry(pwEntry: PwEntryV, iconFactory: IconImageFactory) {
         pwEntry.nodeId = getPwNodeId()
         pwEntry.title = getString(getColumnIndex(COLUMN_INDEX_TITLE))
 
@@ -37,6 +60,9 @@ abstract class EntryCursor<EntryId, PwEntryV : PwEntry<*, EntryId, *, *>> : Matr
         pwEntry.password = getString(getColumnIndex(COLUMN_INDEX_PASSWORD))
         pwEntry.url = getString(getColumnIndex(COLUMN_INDEX_URL))
         pwEntry.notes = getString(getColumnIndex(COLUMN_INDEX_NOTES))
+        pwEntry.expiryTime = DateInstant(getString(getColumnIndex(COLUMN_INDEX_EXPIRY_TIME)))
+        pwEntry.expires = getString(getColumnIndex(COLUMN_INDEX_EXPIRES))
+                                        .toLowerCase(Locale.ENGLISH) != "false"
     }
 
     companion object {
@@ -51,5 +77,7 @@ abstract class EntryCursor<EntryId, PwEntryV : PwEntry<*, EntryId, *, *>> : Matr
         const val COLUMN_INDEX_PASSWORD = "password"
         const val COLUMN_INDEX_URL = "URL"
         const val COLUMN_INDEX_NOTES = "notes"
+        const val COLUMN_INDEX_EXPIRY_TIME = "expiry_time"
+        const val COLUMN_INDEX_EXPIRES = "expires"
     }
 }

app/src/main/java/com/kunzisoft/keepass/database/cursor/EntryCursorKDB.kt

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.database.cursor
+
+import com.kunzisoft.keepass.database.element.database.DatabaseVersioned
+import com.kunzisoft.keepass.database.element.entry.EntryKDB
+
+class EntryCursorKDB : EntryCursorUUID<EntryKDB>() {
+
+    override fun addEntry(entry: EntryKDB) {
+        addRow(arrayOf(
+                entryId,
+                entry.id.mostSignificantBits,
+                entry.id.leastSignificantBits,
+                entry.title,
+                entry.icon.iconId,
+                DatabaseVersioned.UUID_ZERO.mostSignificantBits,
+                DatabaseVersioned.UUID_ZERO.leastSignificantBits,
+                entry.username,
+                entry.password,
+                entry.url,
+                entry.notes,
+                entry.expiryTime,
+                entry.expires
+        ))
+        entryId++
+    }
+
+}

app/src/main/java/com/kunzisoft/keepass/database/cursor/EntryCursorKDBX.kt

@@ -1,15 +1,34 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.database.cursor
 
-import com.kunzisoft.keepass.database.element.PwEntryV4
-import com.kunzisoft.keepass.database.element.PwIconFactory
+import com.kunzisoft.keepass.database.element.entry.EntryKDBX
+import com.kunzisoft.keepass.database.element.icon.IconImageFactory
 
 import java.util.UUID
 
-class EntryCursorV4 : EntryCursorUUID<PwEntryV4>() {
+class EntryCursorKDBX : EntryCursorUUID<EntryKDBX>() {
 
     private val extraFieldCursor: ExtraFieldCursor = ExtraFieldCursor()
 
-    override fun addEntry(entry: PwEntryV4) {
+    override fun addEntry(entry: EntryKDBX) {
         addRow(arrayOf(
                 entryId,
                 entry.id.mostSignificantBits,
@@ -21,7 +40,9 @@ class EntryCursorV4 : EntryCursorUUID<PwEntryV4>() {
                 entry.username,
                 entry.password,
                 entry.url,
-                entry.notes
+                entry.notes,
+                entry.expiryTime,
+                entry.expires
         ))
 
         for (element in entry.customFields.entries) {
@@ -31,7 +52,7 @@ class EntryCursorV4 : EntryCursorUUID<PwEntryV4>() {
         entryId++
     }
 
-    override fun populateEntry(pwEntry: PwEntryV4, iconFactory: PwIconFactory) {
+    override fun populateEntry(pwEntry: EntryKDBX, iconFactory: IconImageFactory) {
         super.populateEntry(pwEntry, iconFactory)
 
         // Retrieve custom icon

app/src/main/java/com/kunzisoft/keepass/database/cursor/EntryCursorUUID.kt

@@ -1,14 +1,33 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.database.cursor
 
-import com.kunzisoft.keepass.database.element.PwEntry
-import com.kunzisoft.keepass.database.element.PwNodeId
-import com.kunzisoft.keepass.database.element.PwNodeIdUUID
+import com.kunzisoft.keepass.database.element.entry.EntryVersioned
+import com.kunzisoft.keepass.database.element.node.NodeId
+import com.kunzisoft.keepass.database.element.node.NodeIdUUID
 import java.util.*
 
-abstract class EntryCursorUUID<EntryV: PwEntry<*, UUID, *, *>>: EntryCursor<UUID, EntryV>() {
+abstract class EntryCursorUUID<EntryV: EntryVersioned<*, UUID, *, *>>: EntryCursor<UUID, EntryV>() {
 
-    override fun getPwNodeId(): PwNodeId<UUID> {
-        return PwNodeIdUUID(
+    override fun getPwNodeId(): NodeId<UUID> {
+        return NodeIdUUID(
                 UUID(getLong(getColumnIndex(COLUMN_INDEX_UUID_MOST_SIGNIFICANT_BITS)),
                         getLong(getColumnIndex(COLUMN_INDEX_UUID_LEAST_SIGNIFICANT_BITS))))
     }

app/src/main/java/com/kunzisoft/keepass/database/cursor/EntryCursorV3.kt

@@ -1,25 +0,0 @@
-package com.kunzisoft.keepass.database.cursor
-
-import com.kunzisoft.keepass.database.element.PwDatabase
-import com.kunzisoft.keepass.database.element.PwEntryV3
-
-class EntryCursorV3 : EntryCursorUUID<PwEntryV3>() {
-
-    override fun addEntry(entry: PwEntryV3) {
-        addRow(arrayOf(
-                entryId,
-                entry.id.mostSignificantBits,
-                entry.id.leastSignificantBits,
-                entry.title,
-                entry.icon.iconId,
-                PwDatabase.UUID_ZERO.mostSignificantBits,
-                PwDatabase.UUID_ZERO.leastSignificantBits,
-                entry.username,
-                entry.password,
-                entry.url,
-                entry.notes
-        ))
-        entryId++
-    }
-
-}

app/src/main/java/com/kunzisoft/keepass/database/cursor/ExtraFieldCursor.kt

@@ -1,9 +1,28 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 package com.kunzisoft.keepass.database.cursor
 
 import android.database.MatrixCursor
 import android.provider.BaseColumns
 
-import com.kunzisoft.keepass.database.element.PwEntryV4
+import com.kunzisoft.keepass.database.element.entry.EntryKDBX
 import com.kunzisoft.keepass.database.element.security.ProtectedString
 
 class ExtraFieldCursor : MatrixCursor(arrayOf(
@@ -22,7 +41,7 @@ class ExtraFieldCursor : MatrixCursor(arrayOf(
         fieldId++
     }
 
-    fun populateExtraFieldInEntry(pwEntry: PwEntryV4) {
+    fun populateExtraFieldInEntry(pwEntry: EntryKDBX) {
         pwEntry.putExtraField(getString(getColumnIndex(COLUMN_LABEL)),
                 ProtectedString(getInt(getColumnIndex(COLUMN_PROTECTION)) > 0,
                         getString(getColumnIndex(COLUMN_VALUE))))

app/src/main/java/com/kunzisoft/keepass/database/element/DateInstant.kt

@@ -0,0 +1,150 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.database.element
+
+import android.content.res.Resources
+import android.os.Parcel
+import android.os.Parcelable
+import androidx.core.os.ConfigurationCompat
+import java.text.SimpleDateFormat
+import java.util.*
+
+class DateInstant : Parcelable {
+
+    private var jDate: Date = Date()
+
+    val date: Date
+        get() = jDate
+
+    constructor(source: DateInstant) {
+        this.jDate = Date(source.jDate.time)
+    }
+
+    constructor(date: Date) {
+        jDate = Date(date.time)
+    }
+
+    constructor(millis: Long) {
+        jDate = Date(millis)
+    }
+
+    constructor(string: String) {
+        jDate = dateFormat.parse(string)
+    }
+
+    constructor() {
+        jDate = Date()
+    }
+
+    protected constructor(parcel: Parcel) {
+        jDate = parcel.readSerializable() as Date
+    }
+
+    override fun describeContents(): Int {
+        return 0
+    }
+
+    fun getDateTimeString(resources: Resources): String {
+        return Companion.getDateTimeString(resources, this.date)
+    }
+
+    override fun writeToParcel(dest: Parcel, flags: Int) {
+        dest.writeSerializable(date)
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) {
+            return true
+        }
+        if (other == null) {
+            return false
+        }
+        if (javaClass != other.javaClass) {
+            return false
+        }
+
+        val date = other as DateInstant
+        return isSameDate(jDate, date.jDate)
+    }
+
+    override fun hashCode(): Int {
+        return jDate.hashCode()
+    }
+
+    override fun toString(): String {
+        return dateFormat.format(jDate)
+    }
+
+    companion object {
+
+        val NEVER_EXPIRE = neverExpire
+        private val dateFormat = SimpleDateFormat.getDateTimeInstance()
+
+        private val neverExpire: DateInstant
+            get() {
+                val cal = Calendar.getInstance()
+                cal.set(Calendar.YEAR, 2999)
+                cal.set(Calendar.MONTH, 11)
+                cal.set(Calendar.DAY_OF_MONTH, 28)
+                cal.set(Calendar.HOUR, 23)
+                cal.set(Calendar.MINUTE, 59)
+                cal.set(Calendar.SECOND, 59)
+
+                return DateInstant(cal.time)
+            }
+
+        @JvmField
+        val CREATOR: Parcelable.Creator<DateInstant> = object : Parcelable.Creator<DateInstant> {
+            override fun createFromParcel(parcel: Parcel): DateInstant {
+                return DateInstant(parcel)
+            }
+
+            override fun newArray(size: Int): Array<DateInstant?> {
+                return arrayOfNulls(size)
+            }
+        }
+
+        private fun isSameDate(d1: Date?, d2: Date?): Boolean {
+            val cal1 = Calendar.getInstance()
+            cal1.time = d1
+            cal1.set(Calendar.MILLISECOND, 0)
+
+            val cal2 = Calendar.getInstance()
+            cal2.time = d2
+            cal2.set(Calendar.MILLISECOND, 0)
+
+            return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
+                    cal1.get(Calendar.MONTH) == cal2.get(Calendar.MONTH) &&
+                    cal1.get(Calendar.DAY_OF_MONTH) == cal2.get(Calendar.DAY_OF_MONTH) &&
+                    cal1.get(Calendar.HOUR) == cal2.get(Calendar.HOUR) &&
+                    cal1.get(Calendar.MINUTE) == cal2.get(Calendar.MINUTE) &&
+                    cal1.get(Calendar.SECOND) == cal2.get(Calendar.SECOND)
+
+        }
+
+        fun getDateTimeString(resources: Resources, date: Date): String {
+            return java.text.DateFormat.getDateTimeInstance(
+                        java.text.DateFormat.MEDIUM,
+                        java.text.DateFormat.MEDIUM,
+                        ConfigurationCompat.getLocales(resources.configuration)[0])
+                            .format(date)
+        }
+    }
+}

app/src/main/java/com/kunzisoft/keepass/database/element/DeletedObject.kt

@@ -19,12 +19,13 @@
  */
 package com.kunzisoft.keepass.database.element
 
+import com.kunzisoft.keepass.database.element.database.DatabaseVersioned
 import java.util.Date
 import java.util.UUID
 
-class PwDeletedObject {
+class DeletedObject {
 
-    var uuid: UUID = PwDatabase.UUID_ZERO
+    var uuid: UUID = DatabaseVersioned.UUID_ZERO
     var deletionTime: Date? = null
         get() = if (field == null) {
             Date(System.currentTimeMillis())
@@ -43,7 +44,7 @@ class PwDeletedObject {
             return true
         if (other == null)
             return false
-        if (other !is PwDeletedObject)
+        if (other !is DeletedObject)
             return false
         return uuid == other.uuid
     }

app/src/main/java/com/kunzisoft/keepass/database/element/Entry.kt

@@ -0,0 +1,442 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.database.element
+
+import android.os.Parcel
+import android.os.Parcelable
+import com.kunzisoft.keepass.database.element.database.DatabaseKDBX
+import com.kunzisoft.keepass.database.element.entry.EntryKDB
+import com.kunzisoft.keepass.database.element.entry.EntryKDBX
+import com.kunzisoft.keepass.database.element.entry.EntryVersionedInterface
+import com.kunzisoft.keepass.database.element.icon.IconImage
+import com.kunzisoft.keepass.database.element.icon.IconImageCustom
+import com.kunzisoft.keepass.database.element.icon.IconImageStandard
+import com.kunzisoft.keepass.database.element.node.Node
+import com.kunzisoft.keepass.database.element.node.NodeId
+import com.kunzisoft.keepass.database.element.node.NodeIdUUID
+import com.kunzisoft.keepass.database.element.node.Type
+import com.kunzisoft.keepass.database.element.security.BinaryAttachment
+import com.kunzisoft.keepass.database.element.security.ProtectedString
+import com.kunzisoft.keepass.model.EntryAttachment
+import com.kunzisoft.keepass.model.EntryInfo
+import com.kunzisoft.keepass.model.Field
+import com.kunzisoft.keepass.otp.OtpElement
+import com.kunzisoft.keepass.otp.OtpEntryFields
+import java.util.*
+import kotlin.collections.ArrayList
+
+class Entry : Node, EntryVersionedInterface<Group> {
+
+    var entryKDB: EntryKDB? = null
+        private set
+    var entryKDBX: EntryKDBX? = null
+        private set
+
+    fun updateWith(entry: Entry, copyHistory: Boolean = true) {
+        entry.entryKDB?.let {
+            this.entryKDB?.updateWith(it)
+        }
+        entry.entryKDBX?.let {
+            this.entryKDBX?.updateWith(it, copyHistory)
+        }
+    }
+
+    /**
+     * Use this constructor to copy an Entry with exact same values
+     */
+    constructor(entry: Entry, copyHistory: Boolean = true) {
+        if (entry.entryKDB != null) {
+            this.entryKDB = EntryKDB()
+        }
+        if (entry.entryKDBX != null) {
+            this.entryKDBX = EntryKDBX()
+        }
+        updateWith(entry, copyHistory)
+    }
+
+    constructor(entry: EntryKDB) {
+        this.entryKDBX = null
+        this.entryKDB = entry
+    }
+
+    constructor(entry: EntryKDBX) {
+        this.entryKDB = null
+        this.entryKDBX = entry
+    }
+
+    constructor(parcel: Parcel) {
+        entryKDB = parcel.readParcelable(EntryKDB::class.java.classLoader)
+        entryKDBX = parcel.readParcelable(EntryKDBX::class.java.classLoader)
+    }
+
+    override fun describeContents(): Int {
+        return 0
+    }
+
+    override fun writeToParcel(dest: Parcel, flags: Int) {
+        dest.writeParcelable(entryKDB, flags)
+        dest.writeParcelable(entryKDBX, flags)
+    }
+
+    override var nodeId: NodeId<UUID>
+        get() = entryKDBX?.nodeId ?: entryKDB?.nodeId ?: NodeIdUUID()
+        set(value) {
+            entryKDB?.nodeId = value
+            entryKDBX?.nodeId = value
+        }
+
+    override var title: String
+        get() = entryKDB?.title ?: entryKDBX?.title ?: ""
+        set(value) {
+            entryKDB?.title = value
+            entryKDBX?.title = value
+        }
+
+    override var icon: IconImage
+        get() {
+            return entryKDB?.icon ?: entryKDBX?.icon ?: IconImageStandard()
+        }
+        set(value) {
+            entryKDB?.icon = value
+            entryKDBX?.icon = value
+        }
+
+    override val type: Type
+        get() = Type.ENTRY
+
+    override var parent: Group?
+        get() {
+            entryKDB?.parent?.let {
+                return Group(it)
+            }
+            entryKDBX?.parent?.let {
+                return Group(it)
+            }
+            return null
+        }
+        set(value) {
+            entryKDB?.parent = value?.groupKDB
+            entryKDBX?.parent = value?.groupKDBX
+        }
+
+    override fun containsParent(): Boolean {
+        return entryKDB?.containsParent() ?: entryKDBX?.containsParent() ?: false
+    }
+
+    override fun afterAssignNewParent() {
+        entryKDBX?.afterChangeParent()
+    }
+
+    override fun touch(modified: Boolean, touchParents: Boolean) {
+        entryKDB?.touch(modified, touchParents)
+        entryKDBX?.touch(modified, touchParents)
+    }
+
+    override fun isContainedIn(container: Group): Boolean {
+        var contained: Boolean? = false
+        container.groupKDB?.let {
+            contained = entryKDB?.isContainedIn(it)
+        }
+        container.groupKDBX?.let {
+            contained = entryKDBX?.isContainedIn(it)
+        }
+        return contained ?: false
+    }
+
+    override var creationTime: DateInstant
+        get() = entryKDB?.creationTime ?: entryKDBX?.creationTime ?: DateInstant()
+        set(value) {
+            entryKDB?.creationTime = value
+            entryKDBX?.creationTime = value
+        }
+
+    override var lastModificationTime: DateInstant
+        get() = entryKDB?.lastModificationTime ?: entryKDBX?.lastModificationTime ?: DateInstant()
+        set(value) {
+            entryKDB?.lastModificationTime = value
+            entryKDBX?.lastModificationTime = value
+        }
+
+    override var lastAccessTime: DateInstant
+        get() = entryKDB?.lastAccessTime ?: entryKDBX?.lastAccessTime ?: DateInstant()
+        set(value) {
+            entryKDB?.lastAccessTime = value
+            entryKDBX?.lastAccessTime = value
+        }
+
+    override var expiryTime: DateInstant
+        get() = entryKDB?.expiryTime ?: entryKDBX?.expiryTime ?: DateInstant()
+        set(value) {
+            entryKDB?.expiryTime = value
+            entryKDBX?.expiryTime = value
+        }
+
+    override var expires: Boolean
+        get() = entryKDB?.expires ?: entryKDBX?.expires ?: false
+        set(value) {
+            entryKDB?.expires = value
+            entryKDBX?.expires = value
+        }
+
+    override val isCurrentlyExpires: Boolean
+        get() = entryKDB?.isCurrentlyExpires ?: entryKDBX?.isCurrentlyExpires ?: false
+
+    override var username: String
+        get() = entryKDB?.username ?: entryKDBX?.username ?: ""
+        set(value) {
+            entryKDB?.username = value
+            entryKDBX?.username = value
+        }
+
+    override var password: String
+        get() = entryKDB?.password ?: entryKDBX?.password ?: ""
+        set(value) {
+            entryKDB?.password = value
+            entryKDBX?.password = value
+        }
+
+    override var url: String
+        get() = entryKDB?.url ?: entryKDBX?.url ?: ""
+        set(value) {
+            entryKDB?.url = value
+            entryKDBX?.url = value
+        }
+
+    override var notes: String
+        get() = entryKDB?.notes ?: entryKDBX?.notes ?: ""
+        set(value) {
+            entryKDB?.notes = value
+            entryKDBX?.notes = value
+        }
+
+    private fun isTan(): Boolean {
+        return title == PMS_TAN_ENTRY && username.isNotEmpty()
+    }
+
+    /**
+     * {@inheritDoc}
+     * Get the display title from an entry, <br></br>
+     * [.startManageEntry] and [.stopManageEntry] must be called
+     * before and after [.getVisualTitle]
+     */
+    fun getVisualTitle(): String {
+        return if (isTan()) {
+            "$PMS_TAN_ENTRY $username"
+        } else {
+            if (title.isEmpty())
+                if (username.isEmpty())
+                    if (url.isEmpty())
+                        nodeId.toString()
+                    else
+                        url
+                else
+                    username
+            else
+                title
+        }
+    }
+
+    /*
+      ------------
+      KDB Methods
+      ------------
+     */
+
+    /**
+     * If it's a node with only meta information like Meta-info SYSTEM Database Color
+     * @return false by default, true if it's a meta stream
+     */
+    val isMetaStream: Boolean
+        get() = entryKDB?.isMetaStream ?: false
+
+    /*
+      ------------
+      KDBX Methods
+      ------------
+     */
+
+    var iconCustom: IconImageCustom
+        get() = entryKDBX?.iconCustom ?: IconImageCustom.UNKNOWN_ICON
+        set(value) {
+            entryKDBX?.iconCustom = value
+        }
+
+    /**
+     * Retrieve custom fields to show, key is the label, value is the value of field (protected or not)
+     * @return Map of label/value
+     */
+    val customFields: HashMap<String, ProtectedString>
+        get() = entryKDBX?.customFields ?: HashMap()
+
+    /**
+     * To redefine if version of entry allow custom field,
+     * @return true if entry allows custom field
+     */
+    fun allowCustomFields(): Boolean {
+        return entryKDBX?.allowCustomFields() ?: false
+    }
+
+    fun removeAllFields() {
+        entryKDBX?.removeAllFields()
+    }
+
+    /**
+     * Update or add an extra field to the list (standard or custom)
+     * @param label Label of field, must be unique
+     * @param value Value of field
+     */
+    fun putExtraField(label: String, value: ProtectedString) {
+        entryKDBX?.putExtraField(label, value)
+    }
+
+    fun getOtpElement(): OtpElement? {
+        return OtpEntryFields.parseFields { key ->
+            customFields[key]?.toString()
+        }
+    }
+
+    fun startToManageFieldReferences(db: DatabaseKDBX) {
+        entryKDBX?.startToManageFieldReferences(db)
+    }
+
+    fun stopToManageFieldReferences() {
+        entryKDBX?.stopToManageFieldReferences()
+    }
+
+    fun getAttachments(): ArrayList<EntryAttachment> {
+        val attachments = ArrayList<EntryAttachment>()
+
+        val binaryDescriptionKDB = entryKDB?.binaryDescription ?: ""
+        val binaryKDB = entryKDB?.binaryData
+        if (binaryKDB != null) {
+            attachments.add(EntryAttachment(binaryDescriptionKDB, binaryKDB))
+        }
+
+        val actionEach = object : (Map.Entry<String, BinaryAttachment>)->Unit {
+            override fun invoke(mapEntry: Map.Entry<String, BinaryAttachment>) {
+                attachments.add(EntryAttachment(mapEntry.key, mapEntry.value))
+            }
+        }
+        entryKDBX?.binaries?.forEach(actionEach)
+
+        return attachments
+    }
+
+    fun getHistory(): ArrayList<Entry> {
+        val history = ArrayList<Entry>()
+        val entryKDBXHistory = entryKDBX?.history ?: ArrayList()
+        for (entryHistory in entryKDBXHistory) {
+            history.add(Entry(entryHistory))
+        }
+        return history
+    }
+
+    fun addEntryToHistory(entry: Entry) {
+        entry.entryKDBX?.let {
+            entryKDBX?.addEntryToHistory(it)
+        }
+    }
+
+    fun removeEntryFromHistory(position: Int) {
+        entryKDBX?.removeEntryFromHistory(position)
+    }
+
+    fun removeAllHistory() {
+        entryKDBX?.removeAllHistory()
+    }
+
+    fun removeOldestEntryFromHistory() {
+        entryKDBX?.removeOldestEntryFromHistory()
+    }
+
+    fun getSize(): Long {
+        return entryKDBX?.size ?: 0L
+    }
+
+    fun containsCustomData(): Boolean {
+        return entryKDBX?.containsCustomData() ?: false
+    }
+
+    /*
+      ------------
+      Converter
+      ------------
+     */
+
+    /**
+     * Retrieve generated entry info,
+     * Remove parameter fields and add auto generated elements in auto custom fields
+     */
+    fun getEntryInfo(database: Database?, raw: Boolean = false): EntryInfo {
+        val entryInfo = EntryInfo()
+        if (raw)
+            database?.stopManageEntry(this)
+        else
+            database?.startManageEntry(this)
+        entryInfo.id = nodeId.toString()
+        entryInfo.title = title
+        entryInfo.username = username
+        entryInfo.password = password
+        entryInfo.url = url
+        entryInfo.notes = notes
+        for (entry in customFields.entries) {
+            entryInfo.customFields.add(
+                    Field(entry.key, entry.value))
+        }
+        // Add otpElement to generate token
+        entryInfo.otpModel = getOtpElement()?.otpModel
+        // Replace parameter fields by generated OTP fields
+        entryInfo.customFields = OtpEntryFields.generateAutoFields(entryInfo.customFields)
+        if (!raw)
+            database?.stopManageEntry(this)
+        return entryInfo
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as Entry
+
+        if (entryKDB != other.entryKDB) return false
+        if (entryKDBX != other.entryKDBX) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = entryKDB?.hashCode() ?: 0
+        result = 31 * result + (entryKDBX?.hashCode() ?: 0)
+        return result
+    }
+
+
+    companion object CREATOR : Parcelable.Creator<Entry> {
+        override fun createFromParcel(parcel: Parcel): Entry {
+            return Entry(parcel)
+        }
+
+        override fun newArray(size: Int): Array<Entry?> {
+            return arrayOfNulls(size)
+        }
+
+        const val PMS_TAN_ENTRY = "<TAN>"
+    }
+}

app/src/main/java/com/kunzisoft/keepass/database/element/EntryVersioned.kt

@@ -1,395 +0,0 @@
-package com.kunzisoft.keepass.database.element
-
-import android.os.Parcel
-import android.os.Parcelable
-import com.kunzisoft.keepass.database.element.security.ProtectedString
-import com.kunzisoft.keepass.model.EntryInfo
-import com.kunzisoft.keepass.model.Field
-import com.kunzisoft.keepass.otp.OtpElement
-import com.kunzisoft.keepass.otp.OtpEntryFields
-import java.util.*
-import kotlin.collections.ArrayList
-
-class EntryVersioned : NodeVersioned, PwEntryInterface<GroupVersioned> {
-
-    var pwEntryV3: PwEntryV3? = null
-        private set
-    var pwEntryV4: PwEntryV4? = null
-        private set
-
-    fun updateWith(entry: EntryVersioned, copyHistory: Boolean = true) {
-        entry.pwEntryV3?.let {
-            this.pwEntryV3?.updateWith(it)
-        }
-        entry.pwEntryV4?.let {
-            this.pwEntryV4?.updateWith(it, copyHistory)
-        }
-    }
-
-    /**
-     * Use this constructor to copy an Entry with exact same values
-     */
-    constructor(entry: EntryVersioned, copyHistory: Boolean = true) {
-        if (entry.pwEntryV3 != null) {
-            this.pwEntryV3 = PwEntryV3()
-        }
-        if (entry.pwEntryV4 != null) {
-            this.pwEntryV4 = PwEntryV4()
-        }
-        updateWith(entry, copyHistory)
-    }
-
-    constructor(entry: PwEntryV3) {
-        this.pwEntryV4 = null
-        this.pwEntryV3 = entry
-    }
-
-    constructor(entry: PwEntryV4) {
-        this.pwEntryV3 = null
-        this.pwEntryV4 = entry
-    }
-
-    constructor(parcel: Parcel) {
-        pwEntryV3 = parcel.readParcelable(PwEntryV3::class.java.classLoader)
-        pwEntryV4 = parcel.readParcelable(PwEntryV4::class.java.classLoader)
-    }
-
-    override fun describeContents(): Int {
-        return 0
-    }
-
-    override fun writeToParcel(dest: Parcel, flags: Int) {
-        dest.writeParcelable(pwEntryV3, flags)
-        dest.writeParcelable(pwEntryV4, flags)
-    }
-
-    override var nodeId: PwNodeId<UUID>
-        get() = pwEntryV4?.nodeId ?: pwEntryV3?.nodeId ?: PwNodeIdUUID()
-        set(value) {
-            pwEntryV3?.nodeId = value
-            pwEntryV4?.nodeId = value
-        }
-
-    override var title: String
-        get() = pwEntryV3?.title ?: pwEntryV4?.title ?: ""
-        set(value) {
-            pwEntryV3?.title = value
-            pwEntryV4?.title = value
-        }
-
-    override var icon: PwIcon
-        get() {
-            return pwEntryV3?.icon ?: pwEntryV4?.icon ?: PwIconStandard()
-        }
-        set(value) {
-            pwEntryV3?.icon = value
-            pwEntryV4?.icon = value
-        }
-
-    override val type: Type
-        get() = Type.ENTRY
-
-    override var parent: GroupVersioned?
-        get() {
-            pwEntryV3?.parent?.let {
-                return GroupVersioned(it)
-            }
-            pwEntryV4?.parent?.let {
-                return GroupVersioned(it)
-            }
-            return null
-        }
-        set(value) {
-            pwEntryV3?.parent = value?.pwGroupV3
-            pwEntryV4?.parent = value?.pwGroupV4
-        }
-
-    override fun containsParent(): Boolean {
-        return pwEntryV3?.containsParent() ?: pwEntryV4?.containsParent() ?: false
-    }
-
-    override fun afterAssignNewParent() {
-        pwEntryV4?.afterChangeParent()
-    }
-
-    override fun touch(modified: Boolean, touchParents: Boolean) {
-        pwEntryV3?.touch(modified, touchParents)
-        pwEntryV4?.touch(modified, touchParents)
-    }
-
-    override fun isContainedIn(container: GroupVersioned): Boolean {
-        var contained: Boolean? = false
-        container.pwGroupV3?.let {
-            contained = pwEntryV3?.isContainedIn(it)
-        }
-        container.pwGroupV4?.let {
-            contained = pwEntryV4?.isContainedIn(it)
-        }
-        return contained ?: false
-    }
-
-    override var creationTime: PwDate
-        get() = pwEntryV3?.creationTime ?: pwEntryV4?.creationTime ?: PwDate()
-        set(value) {
-            pwEntryV3?.creationTime = value
-            pwEntryV4?.creationTime = value
-        }
-
-    override var lastModificationTime: PwDate
-        get() = pwEntryV3?.lastModificationTime ?: pwEntryV4?.lastModificationTime ?: PwDate()
-        set(value) {
-            pwEntryV3?.lastModificationTime = value
-            pwEntryV4?.lastModificationTime = value
-        }
-
-    override var lastAccessTime: PwDate
-        get() = pwEntryV3?.lastAccessTime ?: pwEntryV4?.lastAccessTime ?: PwDate()
-        set(value) {
-            pwEntryV3?.lastAccessTime = value
-            pwEntryV4?.lastAccessTime = value
-        }
-
-    override var expiryTime: PwDate
-        get() = pwEntryV3?.expiryTime ?: pwEntryV4?.expiryTime ?: PwDate()
-        set(value) {
-            pwEntryV3?.expiryTime = value
-            pwEntryV4?.expiryTime = value
-        }
-
-    override var expires: Boolean
-        get() = pwEntryV3?.expires ?: pwEntryV4?.expires ?: false
-        set(value) {
-            pwEntryV3?.expires = value
-            pwEntryV4?.expires = value
-        }
-
-    override val isCurrentlyExpires: Boolean
-        get() = pwEntryV3?.isCurrentlyExpires ?: pwEntryV4?.isCurrentlyExpires ?: false
-
-    override var username: String
-        get() = pwEntryV3?.username ?: pwEntryV4?.username ?: ""
-        set(value) {
-            pwEntryV3?.username = value
-            pwEntryV4?.username = value
-        }
-
-    override var password: String
-        get() = pwEntryV3?.password ?: pwEntryV4?.password ?: ""
-        set(value) {
-            pwEntryV3?.password = value
-            pwEntryV4?.password = value
-        }
-
-    override var url: String
-        get() = pwEntryV3?.url ?: pwEntryV4?.url ?: ""
-        set(value) {
-            pwEntryV3?.url = value
-            pwEntryV4?.url = value
-        }
-
-    override var notes: String
-        get() = pwEntryV3?.notes ?: pwEntryV4?.notes ?: ""
-        set(value) {
-            pwEntryV3?.notes = value
-            pwEntryV4?.notes = value
-        }
-
-    private fun isTan(): Boolean {
-        return title == PMS_TAN_ENTRY && username.isNotEmpty()
-    }
-
-    fun getVisualTitle(): String {
-        return getVisualTitle(isTan(),
-                title,
-                username,
-                url,
-                nodeId.toString())
-    }
-
-    /*
-      ------------
-      V3 Methods
-      ------------
-     */
-
-    /**
-     * If it's a node with only meta information like Meta-info SYSTEM Database Color
-     * @return false by default, true if it's a meta stream
-     */
-    val isMetaStream: Boolean
-        get() = pwEntryV3?.isMetaStream ?: false
-
-    /*
-      ------------
-      V4 Methods
-      ------------
-     */
-
-    var iconCustom: PwIconCustom
-        get() = pwEntryV4?.iconCustom ?: PwIconCustom.UNKNOWN_ICON
-        set(value) {
-            pwEntryV4?.iconCustom = value
-        }
-
-    /**
-     * Retrieve custom fields to show, key is the label, value is the value of field (protected or not)
-     * @return Map of label/value
-     */
-    val customFields: HashMap<String, ProtectedString>
-        get() = pwEntryV4?.customFields ?: HashMap()
-
-    /**
-     * To redefine if version of entry allow custom field,
-     * @return true if entry allows custom field
-     */
-    fun allowCustomFields(): Boolean {
-        return pwEntryV4?.allowCustomFields() ?: false
-    }
-
-    fun removeAllFields() {
-        pwEntryV4?.removeAllFields()
-    }
-
-    /**
-     * Update or add an extra field to the list (standard or custom)
-     * @param label Label of field, must be unique
-     * @param value Value of field
-     */
-    fun putExtraField(label: String, value: ProtectedString) {
-        pwEntryV4?.putExtraField(label, value)
-    }
-
-    fun getOtpElement(): OtpElement? {
-        return OtpEntryFields.parseFields { key ->
-            customFields[key]?.toString()
-        }
-    }
-
-    fun startToManageFieldReferences(db: PwDatabaseV4) {
-        pwEntryV4?.startToManageFieldReferences(db)
-    }
-
-    fun stopToManageFieldReferences() {
-        pwEntryV4?.stopToManageFieldReferences()
-    }
-
-    fun getHistory(): ArrayList<EntryVersioned> {
-        val history = ArrayList<EntryVersioned>()
-        val entryV4History = pwEntryV4?.history ?: ArrayList()
-        for (entryHistory in entryV4History) {
-            history.add(EntryVersioned(entryHistory))
-        }
-        return history
-    }
-
-    fun addEntryToHistory(entry: EntryVersioned) {
-        entry.pwEntryV4?.let {
-            pwEntryV4?.addEntryToHistory(it)
-        }
-    }
-
-    fun removeAllHistory() {
-        pwEntryV4?.removeAllHistory()
-    }
-
-    fun removeOldestEntryFromHistory() {
-        pwEntryV4?.removeOldestEntryFromHistory()
-    }
-
-    fun getSize(): Long {
-        return pwEntryV4?.size ?: 0L
-    }
-
-    fun containsCustomData(): Boolean {
-        return pwEntryV4?.containsCustomData() ?: false
-    }
-
-    /*
-      ------------
-      Converter
-      ------------
-     */
-
-    /**
-     * Retrieve generated entry info,
-     * Remove parameter fields and add auto generated elements in auto custom fields
-     */
-    fun getEntryInfo(database: Database?, raw: Boolean = false): EntryInfo {
-        val entryInfo = EntryInfo()
-        if (raw)
-            database?.stopManageEntry(this)
-        else
-            database?.startManageEntry(this)
-        entryInfo.id = nodeId.toString()
-        entryInfo.title = title
-        entryInfo.username = username
-        entryInfo.password = password
-        entryInfo.url = url
-        entryInfo.notes = notes
-        for (entry in customFields.entries) {
-            entryInfo.customFields.add(
-                    Field(entry.key, entry.value))
-        }
-        // Add otpElement to generate token
-        entryInfo.otpModel = getOtpElement()?.otpModel
-        // Replace parameter fields by generated OTP fields
-        entryInfo.customFields = OtpEntryFields.generateAutoFields(entryInfo.customFields)
-        if (!raw)
-            database?.stopManageEntry(this)
-        return entryInfo
-    }
-
-    override fun equals(other: Any?): Boolean {
-        if (this === other) return true
-        if (javaClass != other?.javaClass) return false
-
-        other as EntryVersioned
-
-        if (pwEntryV3 != other.pwEntryV3) return false
-        if (pwEntryV4 != other.pwEntryV4) return false
-
-        return true
-    }
-
-    override fun hashCode(): Int {
-        var result = pwEntryV3?.hashCode() ?: 0
-        result = 31 * result + (pwEntryV4?.hashCode() ?: 0)
-        return result
-    }
-
-
-    companion object CREATOR : Parcelable.Creator<EntryVersioned> {
-        override fun createFromParcel(parcel: Parcel): EntryVersioned {
-            return EntryVersioned(parcel)
-        }
-
-        override fun newArray(size: Int): Array<EntryVersioned?> {
-            return arrayOfNulls(size)
-        }
-
-        const val PMS_TAN_ENTRY = "<TAN>"
-
-        /**
-         * {@inheritDoc}
-         * Get the display title from an entry, <br></br>
-         * [.startManageEntry] and [.stopManageEntry] must be called
-         * before and after [.getVisualTitle]
-         */
-        fun getVisualTitle(isTan: Boolean, title: String, userName: String, url: String, id: String): String {
-            return if (isTan) {
-                "$PMS_TAN_ENTRY $userName"
-            } else {
-                if (title.isEmpty())
-                    if (userName.isEmpty())
-                        if (url.isEmpty())
-                            id
-                        else
-                            url
-                    else
-                        userName
-                else
-                    title
-            }
-        }
-    }
-}

app/src/main/java/com/kunzisoft/keepass/database/element/Group.kt

@@ -0,0 +1,400 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.database.element
+
+import android.content.Context
+import android.os.Parcel
+import android.os.Parcelable
+import com.kunzisoft.keepass.database.element.group.GroupKDB
+import com.kunzisoft.keepass.database.element.group.GroupKDBX
+import com.kunzisoft.keepass.database.element.group.GroupVersionedInterface
+import com.kunzisoft.keepass.database.element.icon.IconImage
+import com.kunzisoft.keepass.database.element.icon.IconImageStandard
+import com.kunzisoft.keepass.database.element.node.*
+import com.kunzisoft.keepass.settings.PreferencesUtil
+import java.util.*
+import kotlin.collections.ArrayList
+
+class Group : Node, GroupVersionedInterface<Group, Entry> {
+
+    var groupKDB: GroupKDB? = null
+        private set
+    var groupKDBX: GroupKDBX? = null
+        private set
+
+    fun updateWith(group: Group) {
+        group.groupKDB?.let {
+            this.groupKDB?.updateWith(it)
+        }
+        group.groupKDBX?.let {
+            this.groupKDBX?.updateWith(it)
+        }
+    }
+
+    /**
+     * Use this constructor to copy a Group
+     */
+    constructor(group: Group) {
+        if (group.groupKDB != null) {
+            if (this.groupKDB == null)
+                this.groupKDB = GroupKDB()
+        }
+        if (group.groupKDBX != null) {
+            if (this.groupKDBX == null)
+                this.groupKDBX = GroupKDBX()
+        }
+        updateWith(group)
+    }
+
+    constructor(group: GroupKDB) {
+        this.groupKDBX = null
+        this.groupKDB = group
+    }
+
+    constructor(group: GroupKDBX) {
+        this.groupKDB = null
+        this.groupKDBX = group
+    }
+
+    constructor(parcel: Parcel) {
+        groupKDB = parcel.readParcelable(GroupKDB::class.java.classLoader)
+        groupKDBX = parcel.readParcelable(GroupKDBX::class.java.classLoader)
+    }
+
+    enum class ChildFilter {
+        META_STREAM, EXPIRED;
+
+        companion object {
+            fun getDefaults(context: Context): Array<ChildFilter> {
+                return if (PreferencesUtil.showExpiredEntries(context)) {
+                    arrayOf(META_STREAM)
+                } else {
+                    arrayOf(META_STREAM, EXPIRED)
+                }
+            }
+        }
+    }
+
+    companion object CREATOR : Parcelable.Creator<Group> {
+        override fun createFromParcel(parcel: Parcel): Group {
+            return Group(parcel)
+        }
+
+        override fun newArray(size: Int): Array<Group?> {
+            return arrayOfNulls(size)
+        }
+    }
+
+    override fun describeContents(): Int {
+        return 0
+    }
+
+    override fun writeToParcel(dest: Parcel, flags: Int) {
+        dest.writeParcelable(groupKDB, flags)
+        dest.writeParcelable(groupKDBX, flags)
+    }
+
+    override val nodeId: NodeId<*>?
+        get() = groupKDBX?.nodeId ?: groupKDB?.nodeId
+
+    override var title: String
+        get() = groupKDB?.title ?: groupKDBX?.title ?: ""
+        set(value) {
+            groupKDB?.title = value
+            groupKDBX?.title = value
+        }
+
+    override var icon: IconImage
+        get() = groupKDB?.icon ?: groupKDBX?.icon ?: IconImageStandard()
+        set(value) {
+            groupKDB?.icon = value
+            groupKDBX?.icon = value
+        }
+
+    override val type: Type
+        get() = Type.GROUP
+
+    override var parent: Group?
+        get() {
+            groupKDB?.parent?.let {
+                return Group(it)
+            }
+            groupKDBX?.parent?.let {
+                return Group(it)
+            }
+            return null
+        }
+        set(value) {
+            groupKDB?.parent = value?.groupKDB
+            groupKDBX?.parent = value?.groupKDBX
+        }
+
+    override fun containsParent(): Boolean {
+        return groupKDB?.containsParent() ?: groupKDBX?.containsParent() ?: false
+    }
+
+    override fun afterAssignNewParent() {
+        groupKDB?.afterAssignNewParent()
+        groupKDBX?.afterAssignNewParent()
+    }
+
+    fun addChildrenFrom(group: Group) {
+        group.groupKDB?.getChildEntries()?.forEach { entryToAdd ->
+            groupKDB?.addChildEntry(entryToAdd)
+        }
+        group.groupKDB?.getChildGroups()?.forEach { groupToAdd ->
+            groupKDB?.addChildGroup(groupToAdd)
+        }
+
+        group.groupKDBX?.getChildEntries()?.forEach { entryToAdd ->
+            groupKDBX?.addChildEntry(entryToAdd)
+        }
+        group.groupKDBX?.getChildGroups()?.forEach { groupToAdd ->
+            groupKDBX?.addChildGroup(groupToAdd)
+        }
+    }
+
+    override fun touch(modified: Boolean, touchParents: Boolean) {
+        groupKDB?.touch(modified, touchParents)
+        groupKDBX?.touch(modified, touchParents)
+    }
+
+    override fun isContainedIn(container: Group): Boolean {
+        var contained: Boolean? = null
+        container.groupKDB?.let {
+            contained = groupKDB?.isContainedIn(it)
+        }
+        container.groupKDBX?.let {
+            contained = groupKDBX?.isContainedIn(it)
+        }
+        return contained ?: false
+    }
+
+    override var creationTime: DateInstant
+        get() = groupKDB?.creationTime ?: groupKDBX?.creationTime ?: DateInstant()
+        set(value) {
+            groupKDB?.creationTime = value
+            groupKDBX?.creationTime = value
+        }
+
+    override var lastModificationTime: DateInstant
+        get() = groupKDB?.lastModificationTime ?: groupKDBX?.lastModificationTime ?: DateInstant()
+        set(value) {
+            groupKDB?.lastModificationTime = value
+            groupKDBX?.lastModificationTime = value
+        }
+
+    override var lastAccessTime: DateInstant
+        get() = groupKDB?.lastAccessTime ?: groupKDBX?.lastAccessTime ?: DateInstant()
+        set(value) {
+            groupKDB?.lastAccessTime = value
+            groupKDBX?.lastAccessTime = value
+        }
+
+    override var expiryTime: DateInstant
+        get() = groupKDB?.expiryTime ?: groupKDBX?.expiryTime ?: DateInstant()
+        set(value) {
+            groupKDB?.expiryTime = value
+            groupKDBX?.expiryTime = value
+        }
+
+    override var expires: Boolean
+        get() = groupKDB?.expires ?: groupKDBX?.expires ?: false
+        set(value) {
+            groupKDB?.expires = value
+            groupKDBX?.expires = value
+        }
+
+    override val isCurrentlyExpires: Boolean
+        get() = groupKDB?.isCurrentlyExpires ?: groupKDBX?.isCurrentlyExpires ?: false
+
+    override fun getChildGroups(): MutableList<Group> {
+        val children = ArrayList<Group>()
+
+        groupKDB?.getChildGroups()?.forEach {
+            children.add(Group(it))
+        }
+        groupKDBX?.getChildGroups()?.forEach {
+            children.add(Group(it))
+        }
+
+        return children
+    }
+
+    override fun getChildEntries(): MutableList<Entry> {
+        // To cal function with vararg
+        return getChildEntries(*emptyArray<ChildFilter>())
+    }
+
+    fun getChildEntries(vararg filter: ChildFilter): MutableList<Entry> {
+        val children = ArrayList<Entry>()
+
+        val withoutMetaStream = filter.contains(ChildFilter.META_STREAM)
+        val showExpiredEntries = !filter.contains(ChildFilter.EXPIRED)
+
+        groupKDB?.getChildEntries()?.forEach {
+            val entryToAddAsChild = Entry(it)
+            if ((!withoutMetaStream || (withoutMetaStream && !entryToAddAsChild.isMetaStream))
+                    && (!entryToAddAsChild.isCurrentlyExpires or showExpiredEntries))
+                children.add(entryToAddAsChild)
+        }
+        groupKDBX?.getChildEntries()?.forEach {
+            val entryToAddAsChild = Entry(it)
+            if (!entryToAddAsChild.isCurrentlyExpires or showExpiredEntries)
+                children.add(entryToAddAsChild)
+        }
+
+        return children
+    }
+
+    /**
+     * Filter entries and return children
+     * @return List of direct children (one level below) as NodeVersioned
+     */
+    fun getChildren(vararg filter: ChildFilter): List<Node> {
+        val children = ArrayList<Node>()
+        children.addAll(getChildGroups())
+
+        groupKDB?.let {
+            children.addAll(getChildEntries(*filter))
+        }
+        groupKDBX?.let {
+            // No MetasStream in V4
+            children.addAll(getChildEntries(*filter))
+        }
+
+        return children
+    }
+
+    override fun addChildGroup(group: Group) {
+        group.groupKDB?.let {
+            groupKDB?.addChildGroup(it)
+        }
+        group.groupKDBX?.let {
+            groupKDBX?.addChildGroup(it)
+        }
+    }
+
+    override fun addChildEntry(entry: Entry) {
+        entry.entryKDB?.let {
+            groupKDB?.addChildEntry(it)
+        }
+        entry.entryKDBX?.let {
+            groupKDBX?.addChildEntry(it)
+        }
+    }
+
+    override fun removeChildGroup(group: Group) {
+        group.groupKDB?.let {
+            groupKDB?.removeChildGroup(it)
+        }
+        group.groupKDBX?.let {
+            groupKDBX?.removeChildGroup(it)
+        }
+    }
+
+    override fun removeChildEntry(entry: Entry) {
+        entry.entryKDB?.let {
+            groupKDB?.removeChildEntry(it)
+        }
+        entry.entryKDBX?.let {
+            groupKDBX?.removeChildEntry(it)
+        }
+    }
+
+    override fun removeChildren() {
+        groupKDB?.removeChildren()
+        groupKDBX?.removeChildren()
+    }
+
+    override fun allowAddEntryIfIsRoot(): Boolean {
+        return groupKDB?.allowAddEntryIfIsRoot() ?: groupKDBX?.allowAddEntryIfIsRoot() ?: false
+    }
+
+    /*
+      ------------
+      KDB Methods
+      ------------
+     */
+
+    var nodeIdKDB: NodeId<Int>
+        get() = groupKDB?.nodeId ?: NodeIdInt()
+        set(value) { groupKDB?.nodeId = value }
+
+    fun setNodeId(id: NodeIdInt) {
+        groupKDB?.nodeId = id
+    }
+
+    fun getLevel(): Int {
+        return groupKDB?.level ?: -1
+    }
+
+    fun setLevel(level: Int) {
+        groupKDB?.level = level
+    }
+
+    /*
+      ------------
+      KDBX Methods
+      ------------
+     */
+
+    var nodeIdKDBX: NodeId<UUID>
+        get() = groupKDBX?.nodeId ?: NodeIdUUID()
+        set(value) { groupKDBX?.nodeId = value }
+
+    fun setNodeId(id: NodeIdUUID) {
+        groupKDBX?.nodeId = id
+    }
+
+    fun setEnableAutoType(enableAutoType: Boolean?) {
+        groupKDBX?.enableAutoType = enableAutoType
+    }
+
+    fun setEnableSearching(enableSearching: Boolean?) {
+        groupKDBX?.enableSearching = enableSearching
+    }
+
+    fun setExpanded(expanded: Boolean) {
+        groupKDBX?.isExpanded = expanded
+    }
+
+    fun containsCustomData(): Boolean {
+        return groupKDBX?.containsCustomData() ?: false
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as Group
+
+        if (groupKDB != other.groupKDB) return false
+        if (groupKDBX != other.groupKDBX) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = groupKDB?.hashCode() ?: 0
+        result = 31 * result + (groupKDBX?.hashCode() ?: 0)
+        return result
+    }
+}

app/src/main/java/com/kunzisoft/keepass/database/element/GroupVersioned.kt

@@ -1,363 +0,0 @@
-package com.kunzisoft.keepass.database.element
-
-import android.os.Parcel
-import android.os.Parcelable
-import java.util.*
-import kotlin.collections.ArrayList
-
-class GroupVersioned : NodeVersioned, PwGroupInterface<GroupVersioned, EntryVersioned> {
-
-    var pwGroupV3: PwGroupV3? = null
-        private set
-    var pwGroupV4: PwGroupV4? = null
-        private set
-
-    fun updateWith(group: GroupVersioned) {
-        group.pwGroupV3?.let {
-            this.pwGroupV3?.updateWith(it)
-        }
-        group.pwGroupV4?.let {
-            this.pwGroupV4?.updateWith(it)
-        }
-    }
-
-    /**
-     * Use this constructor to copy a Group
-     */
-    constructor(group: GroupVersioned) {
-        if (group.pwGroupV3 != null) {
-            if (this.pwGroupV3 == null)
-                this.pwGroupV3 = PwGroupV3()
-        }
-        if (group.pwGroupV4 != null) {
-            if (this.pwGroupV4 == null)
-                this.pwGroupV4 = PwGroupV4()
-        }
-        updateWith(group)
-    }
-
-    constructor(group: PwGroupV3) {
-        this.pwGroupV4 = null
-        this.pwGroupV3 = group
-    }
-
-    constructor(group: PwGroupV4) {
-        this.pwGroupV3 = null
-        this.pwGroupV4 = group
-    }
-
-    constructor(parcel: Parcel) {
-        pwGroupV3 = parcel.readParcelable(PwGroupV3::class.java.classLoader)
-        pwGroupV4 = parcel.readParcelable(PwGroupV4::class.java.classLoader)
-    }
-
-    companion object CREATOR : Parcelable.Creator<GroupVersioned> {
-        override fun createFromParcel(parcel: Parcel): GroupVersioned {
-            return GroupVersioned(parcel)
-        }
-
-        override fun newArray(size: Int): Array<GroupVersioned?> {
-            return arrayOfNulls(size)
-        }
-    }
-
-    override fun describeContents(): Int {
-        return 0
-    }
-
-    override fun writeToParcel(dest: Parcel, flags: Int) {
-        dest.writeParcelable(pwGroupV3, flags)
-        dest.writeParcelable(pwGroupV4, flags)
-    }
-
-    override val nodeId: PwNodeId<*>?
-        get() = pwGroupV4?.nodeId ?: pwGroupV3?.nodeId
-
-    override var title: String
-        get() = pwGroupV3?.title ?: pwGroupV4?.title ?: ""
-        set(value) {
-            pwGroupV3?.title = value
-            pwGroupV4?.title = value
-        }
-
-    override var icon: PwIcon
-        get() = pwGroupV3?.icon ?: pwGroupV4?.icon ?: PwIconStandard()
-        set(value) {
-            pwGroupV3?.icon = value
-            pwGroupV4?.icon = value
-        }
-
-    override val type: Type
-        get() = Type.GROUP
-
-    override var parent: GroupVersioned?
-        get() {
-            pwGroupV3?.parent?.let {
-                return GroupVersioned(it)
-            }
-            pwGroupV4?.parent?.let {
-                return GroupVersioned(it)
-            }
-            return null
-        }
-        set(value) {
-            pwGroupV3?.parent = value?.pwGroupV3
-            pwGroupV4?.parent = value?.pwGroupV4
-        }
-
-    override fun containsParent(): Boolean {
-        return pwGroupV3?.containsParent() ?: pwGroupV4?.containsParent() ?: false
-    }
-
-    override fun afterAssignNewParent() {
-        pwGroupV3?.afterAssignNewParent()
-        pwGroupV4?.afterAssignNewParent()
-    }
-
-    fun addChildrenFrom(group: GroupVersioned) {
-        group.pwGroupV3?.getChildEntries()?.forEach { entryToAdd ->
-            pwGroupV3?.addChildEntry(entryToAdd)
-        }
-        group.pwGroupV3?.getChildGroups()?.forEach { groupToAdd ->
-            pwGroupV3?.addChildGroup(groupToAdd)
-        }
-
-        group.pwGroupV4?.getChildEntries()?.forEach { entryToAdd ->
-            pwGroupV4?.addChildEntry(entryToAdd)
-        }
-        group.pwGroupV4?.getChildGroups()?.forEach { groupToAdd ->
-            pwGroupV4?.addChildGroup(groupToAdd)
-        }
-    }
-
-    fun removeChildren() {
-        pwGroupV3?.getChildEntries()?.forEach { entryToRemove ->
-            pwGroupV3?.removeChildEntry(entryToRemove)
-        }
-        pwGroupV3?.getChildGroups()?.forEach { groupToRemove ->
-            pwGroupV3?.removeChildGroup(groupToRemove)
-        }
-
-        pwGroupV4?.getChildEntries()?.forEach { entryToRemove ->
-            pwGroupV4?.removeChildEntry(entryToRemove)
-        }
-        pwGroupV4?.getChildGroups()?.forEach { groupToRemove ->
-            pwGroupV4?.removeChildGroup(groupToRemove)
-        }
-    }
-
-    override fun touch(modified: Boolean, touchParents: Boolean) {
-        pwGroupV3?.touch(modified, touchParents)
-        pwGroupV4?.touch(modified, touchParents)
-    }
-
-    override fun isContainedIn(container: GroupVersioned): Boolean {
-        var contained: Boolean? = null
-        container.pwGroupV3?.let {
-            contained = pwGroupV3?.isContainedIn(it)
-        }
-        container.pwGroupV4?.let {
-            contained = pwGroupV4?.isContainedIn(it)
-        }
-        return contained ?: false
-    }
-
-    override var creationTime: PwDate
-        get() = pwGroupV3?.creationTime ?: pwGroupV4?.creationTime ?: PwDate()
-        set(value) {
-            pwGroupV3?.creationTime = value
-            pwGroupV4?.creationTime = value
-        }
-
-    override var lastModificationTime: PwDate
-        get() = pwGroupV3?.lastModificationTime ?: pwGroupV4?.lastModificationTime ?: PwDate()
-        set(value) {
-            pwGroupV3?.lastModificationTime = value
-            pwGroupV4?.lastModificationTime = value
-        }
-
-    override var lastAccessTime: PwDate
-        get() = pwGroupV3?.lastAccessTime ?: pwGroupV4?.lastAccessTime ?: PwDate()
-        set(value) {
-            pwGroupV3?.lastAccessTime = value
-            pwGroupV4?.lastAccessTime = value
-        }
-
-    override var expiryTime: PwDate
-        get() = pwGroupV3?.expiryTime ?: pwGroupV4?.expiryTime ?: PwDate()
-        set(value) {
-            pwGroupV3?.expiryTime = value
-            pwGroupV4?.expiryTime = value
-        }
-
-    override var expires: Boolean
-        get() = pwGroupV3?.expires ?: pwGroupV4?.expires ?: false
-        set(value) {
-            pwGroupV3?.expires = value
-            pwGroupV4?.expires = value
-        }
-
-    override val isCurrentlyExpires: Boolean
-        get() = pwGroupV3?.isCurrentlyExpires ?: pwGroupV4?.isCurrentlyExpires ?: false
-
-    override fun getChildGroups(): MutableList<GroupVersioned> {
-        val children = ArrayList<GroupVersioned>()
-
-        pwGroupV3?.getChildGroups()?.forEach {
-            children.add(GroupVersioned(it))
-        }
-        pwGroupV4?.getChildGroups()?.forEach {
-            children.add(GroupVersioned(it))
-        }
-
-        return children
-    }
-
-    override fun getChildEntries(): MutableList<EntryVersioned> {
-        return getChildEntries(false)
-    }
-
-    fun getChildEntries(withoutMetaStream: Boolean): MutableList<EntryVersioned> {
-        val children = ArrayList<EntryVersioned>()
-
-        pwGroupV3?.getChildEntries()?.forEach {
-            val entryToAddAsChild = EntryVersioned(it)
-            if (!withoutMetaStream || (withoutMetaStream && !entryToAddAsChild.isMetaStream))
-                children.add(entryToAddAsChild)
-        }
-        pwGroupV4?.getChildEntries()?.forEach {
-            children.add(EntryVersioned(it))
-        }
-
-        return children
-    }
-
-    /**
-     * Filter MetaStream entries and return children
-     * @return List of direct children (one level below) as PwNode
-     */
-    fun getChildren(withoutMetaStream: Boolean = true): List<NodeVersioned> {
-        val children = ArrayList<NodeVersioned>()
-        children.addAll(getChildGroups())
-
-        pwGroupV3?.let {
-            children.addAll(getChildEntries(withoutMetaStream))
-        }
-        pwGroupV4?.let {
-            // No MetasStream in V4
-            children.addAll(getChildEntries(withoutMetaStream))
-        }
-
-        return children
-    }
-
-    override fun addChildGroup(group: GroupVersioned) {
-        group.pwGroupV3?.let {
-            pwGroupV3?.addChildGroup(it)
-        }
-        group.pwGroupV4?.let {
-            pwGroupV4?.addChildGroup(it)
-        }
-    }
-
-    override fun addChildEntry(entry: EntryVersioned) {
-        entry.pwEntryV3?.let {
-            pwGroupV3?.addChildEntry(it)
-        }
-        entry.pwEntryV4?.let {
-            pwGroupV4?.addChildEntry(it)
-        }
-    }
-
-    override fun removeChildGroup(group: GroupVersioned) {
-        group.pwGroupV3?.let {
-            pwGroupV3?.removeChildGroup(it)
-        }
-        group.pwGroupV4?.let {
-            pwGroupV4?.removeChildGroup(it)
-        }
-    }
-
-    override fun removeChildEntry(entry: EntryVersioned) {
-        entry.pwEntryV3?.let {
-            pwGroupV3?.removeChildEntry(it)
-        }
-        entry.pwEntryV4?.let {
-            pwGroupV4?.removeChildEntry(it)
-        }
-    }
-
-    override fun allowAddEntryIfIsRoot(): Boolean {
-        return pwGroupV3?.allowAddEntryIfIsRoot() ?: pwGroupV4?.allowAddEntryIfIsRoot() ?: false
-    }
-
-    /*
-      ------------
-      V3 Methods
-      ------------
-     */
-
-    var nodeIdV3: PwNodeId<Int>
-        get() = pwGroupV3?.nodeId ?: PwNodeIdInt()
-        set(value) { pwGroupV3?.nodeId = value }
-
-    fun setNodeId(id: PwNodeIdInt) {
-        pwGroupV3?.nodeId = id
-    }
-
-    fun getLevel(): Int {
-        return pwGroupV3?.level ?: -1
-    }
-
-    fun setLevel(level: Int) {
-        pwGroupV3?.level = level
-    }
-
-    /*
-      ------------
-      V4 Methods
-      ------------
-     */
-
-    var nodeIdV4: PwNodeId<UUID>
-        get() = pwGroupV4?.nodeId ?: PwNodeIdUUID()
-        set(value) { pwGroupV4?.nodeId = value }
-
-    fun setNodeId(id: PwNodeIdUUID) {
-        pwGroupV4?.nodeId = id
-    }
-
-    fun setEnableAutoType(enableAutoType: Boolean?) {
-        pwGroupV4?.enableAutoType = enableAutoType
-    }
-
-    fun setEnableSearching(enableSearching: Boolean?) {
-        pwGroupV4?.enableSearching = enableSearching
-    }
-
-    fun setExpanded(expanded: Boolean) {
-        pwGroupV4?.isExpanded = expanded
-    }
-
-    fun containsCustomData(): Boolean {
-        return pwGroupV4?.containsCustomData() ?: false
-    }
-
-    override fun equals(other: Any?): Boolean {
-        if (this === other) return true
-        if (javaClass != other?.javaClass) return false
-
-        other as GroupVersioned
-
-        if (pwGroupV3 != other.pwGroupV3) return false
-        if (pwGroupV4 != other.pwGroupV4) return false
-
-        return true
-    }
-
-    override fun hashCode(): Int {
-        var result = pwGroupV3?.hashCode() ?: 0
-        result = 31 * result + (pwGroupV4?.hashCode() ?: 0)
-        return result
-    }
-}

app/src/main/java/com/kunzisoft/keepass/database/element/NodeVersioned.kt

@@ -1,34 +0,0 @@
-package com.kunzisoft.keepass.database.element
-
-interface NodeVersioned: PwNodeInterface<GroupVersioned> {
-
-    val nodeId: PwNodeId<*>?
-
-    val nodePositionInParent: Int
-        get() {
-            parent?.getChildren(true)?.let { children ->
-                children.forEachIndexed { index, nodeVersioned ->
-                    if (nodeVersioned.nodeId == this.nodeId)
-                        return index
-                }
-            }
-            return -1
-        }
-
-    fun addParentFrom(node: NodeVersioned) {
-        parent = node.parent
-    }
-
-    fun removeParent() {
-        parent = null
-    }
-}
-
-/**
- * Type of available Nodes
- */
-enum class Type {
-    GROUP, ENTRY
-}
-
-

app/src/main/java/com/kunzisoft/keepass/database/element/PwDate.kt

@@ -1,275 +0,0 @@
-/*
- * Copyright 2019 Jeremy Jamet / Kunzisoft.
- *
- * This file is part of KeePass DX.
- *
- *  KeePass DX is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  KeePass DX is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with KeePass DX.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-package com.kunzisoft.keepass.database.element
-
-import android.content.res.Resources
-import android.os.Parcel
-import android.os.Parcelable
-import androidx.core.os.ConfigurationCompat
-import com.kunzisoft.keepass.utils.Types
-import java.util.*
-
-/**
- * Converting from the C Date format to the Java data format is
- * expensive when done for every record at once.
- */
-class PwDate : Parcelable {
-
-    private var jDate: Date = Date()
-    private var jDateBuilt = false
-    @Transient
-    private var cDate: ByteArray? = null
-    @Transient
-    private var cDateBuilt = false
-
-    val date: Date
-        get() {
-            if (!jDateBuilt) {
-                jDate = readTime(cDate, 0, calendar)
-                jDateBuilt = true
-            }
-
-            return jDate
-        }
-
-    val byteArrayDate: ByteArray?
-        get() {
-            if (!cDateBuilt) {
-                cDate = writeTime(jDate, calendar)
-                cDateBuilt = true
-            }
-
-            return cDate
-        }
-
-    constructor(buf: ByteArray, offset: Int) {
-        cDate = ByteArray(DATE_SIZE)
-        System.arraycopy(buf, offset, cDate!!, 0, DATE_SIZE)
-        cDateBuilt = true
-    }
-
-    constructor(source: PwDate) {
-        this.jDate = Date(source.jDate.time)
-        this.jDateBuilt = source.jDateBuilt
-
-        if (source.cDate != null) {
-            val dateLength = source.cDate!!.size
-            this.cDate = ByteArray(dateLength)
-            System.arraycopy(source.cDate!!, 0, this.cDate!!, 0, dateLength)
-        }
-        this.cDateBuilt = source.cDateBuilt
-    }
-
-    constructor(date: Date) {
-        jDate = Date(date.time)
-        jDateBuilt = true
-    }
-
-    constructor(millis: Long) {
-        jDate = Date(millis)
-        jDateBuilt = true
-    }
-
-    constructor() {
-        jDate = Date()
-        jDateBuilt = true
-    }
-
-    protected constructor(parcel: Parcel) {
-        jDate = parcel.readSerializable() as Date
-        jDateBuilt = parcel.readByte().toInt() != 0
-        cDateBuilt = false
-    }
-
-    override fun describeContents(): Int {
-        return 0
-    }
-
-    fun getDateTimeString(resources: Resources): String {
-        return Companion.getDateTimeString(resources, this.date)
-    }
-
-    override fun writeToParcel(dest: Parcel, flags: Int) {
-        dest.writeSerializable(date)
-        dest.writeByte((if (jDateBuilt) 1 else 0).toByte())
-    }
-
-    override fun equals(other: Any?): Boolean {
-        if (this === other) {
-            return true
-        }
-        if (other == null) {
-            return false
-        }
-        if (javaClass != other.javaClass) {
-            return false
-        }
-
-        val date = other as PwDate?
-        return if (cDateBuilt && date!!.cDateBuilt) {
-            Arrays.equals(cDate, date.cDate)
-        } else if (jDateBuilt && date!!.jDateBuilt) {
-            isSameDate(jDate, date.jDate)
-        } else if (cDateBuilt && date!!.jDateBuilt) {
-            Arrays.equals(date.byteArrayDate, cDate)
-        } else {
-            isSameDate(date!!.date, jDate)
-        }
-    }
-
-    override fun hashCode(): Int {
-        var result = jDate.hashCode()
-        result = 31 * result + jDateBuilt.hashCode()
-        result = 31 * result + (cDate?.contentHashCode() ?: 0)
-        result = 31 * result + cDateBuilt.hashCode()
-        return result
-    }
-
-    companion object {
-
-        private const val DATE_SIZE = 5
-
-        private var mCalendar: Calendar? = null
-
-        val NEVER_EXPIRE = neverExpire
-
-        private val calendar: Calendar?
-            get() {
-                if (mCalendar == null) {
-                    mCalendar = Calendar.getInstance()
-                }
-                return mCalendar
-            }
-
-        private val neverExpire: PwDate
-            get() {
-                val cal = Calendar.getInstance()
-                cal.set(Calendar.YEAR, 2999)
-                cal.set(Calendar.MONTH, 11)
-                cal.set(Calendar.DAY_OF_MONTH, 28)
-                cal.set(Calendar.HOUR, 23)
-                cal.set(Calendar.MINUTE, 59)
-                cal.set(Calendar.SECOND, 59)
-
-                return PwDate(cal.time)
-            }
-
-        @JvmField
-        val CREATOR: Parcelable.Creator<PwDate> = object : Parcelable.Creator<PwDate> {
-            override fun createFromParcel(parcel: Parcel): PwDate {
-                return PwDate(parcel)
-            }
-
-            override fun newArray(size: Int): Array<PwDate?> {
-                return arrayOfNulls(size)
-            }
-        }
-
-        /**
-         * Unpack date from 5 byte format. The five bytes at 'offset' are unpacked
-         * to a java.util.Date instance.
-         */
-        fun readTime(buf: ByteArray?, offset: Int, calendar: Calendar?): Date {
-            var time = calendar
-            val dw1 = Types.readUByte(buf!!, offset)
-            val dw2 = Types.readUByte(buf, offset + 1)
-            val dw3 = Types.readUByte(buf, offset + 2)
-            val dw4 = Types.readUByte(buf, offset + 3)
-            val dw5 = Types.readUByte(buf, offset + 4)
-
-            // Unpack 5 byte structure to date and time
-            val year = dw1 shl 6 or (dw2 shr 2)
-            val month = dw2 and 0x00000003 shl 2 or (dw3 shr 6)
-
-            val day = dw3 shr 1 and 0x0000001F
-            val hour = dw3 and 0x00000001 shl 4 or (dw4 shr 4)
-            val minute = dw4 and 0x0000000F shl 2 or (dw5 shr 6)
-            val second = dw5 and 0x0000003F
-
-            if (time == null) {
-                time = Calendar.getInstance()
-            }
-            // File format is a 1 based month, java Calendar uses a zero based month
-            // File format is a 1 based day, java Calendar uses a 1 based day
-            time!!.set(year, month - 1, day, hour, minute, second)
-
-            return time.time
-
-        }
-
-        @JvmOverloads
-        fun writeTime(date: Date?, calendar: Calendar? = null): ByteArray? {
-            var cal = calendar
-            if (date == null) {
-                return null
-            }
-
-            val buf = ByteArray(5)
-            if (cal == null) {
-                cal = Calendar.getInstance()
-            }
-            cal!!.time = date
-
-            val year = cal.get(Calendar.YEAR)
-            // File format is a 1 based month, java Calendar uses a zero based month
-            val month = cal.get(Calendar.MONTH) + 1
-            // File format is a 0 based day, java Calendar uses a 1 based day
-            val day = cal.get(Calendar.DAY_OF_MONTH) - 1
-            val hour = cal.get(Calendar.HOUR_OF_DAY)
-            val minute = cal.get(Calendar.MINUTE)
-            val second = cal.get(Calendar.SECOND)
-
-            buf[0] = Types.writeUByte(year shr 6 and 0x0000003F)
-            buf[1] = Types.writeUByte(year and 0x0000003F shl 2 or (month shr 2 and 0x00000003))
-            buf[2] = (month and 0x00000003 shl 6
-                    or (day and 0x0000001F shl 1) or (hour shr 4 and 0x00000001)).toByte()
-            buf[3] = (hour and 0x0000000F shl 4 or (minute shr 2 and 0x0000000F)).toByte()
-            buf[4] = (minute and 0x00000003 shl 6 or (second and 0x0000003F)).toByte()
-
-            return buf
-        }
-
-        private fun isSameDate(d1: Date?, d2: Date?): Boolean {
-            val cal1 = Calendar.getInstance()
-            cal1.time = d1
-            cal1.set(Calendar.MILLISECOND, 0)
-
-            val cal2 = Calendar.getInstance()
-            cal2.time = d2
-            cal2.set(Calendar.MILLISECOND, 0)
-
-            return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
-                    cal1.get(Calendar.MONTH) == cal2.get(Calendar.MONTH) &&
-                    cal1.get(Calendar.DAY_OF_MONTH) == cal2.get(Calendar.DAY_OF_MONTH) &&
-                    cal1.get(Calendar.HOUR) == cal2.get(Calendar.HOUR) &&
-                    cal1.get(Calendar.MINUTE) == cal2.get(Calendar.MINUTE) &&
-                    cal1.get(Calendar.SECOND) == cal2.get(Calendar.SECOND)
-
-        }
-
-        fun getDateTimeString(resources: Resources, date: Date): String {
-            return java.text.DateFormat.getDateTimeInstance(
-                        java.text.DateFormat.MEDIUM,
-                        java.text.DateFormat.MEDIUM,
-                        ConfigurationCompat.getLocales(resources.configuration)[0])
-                            .format(date)
-        }
-    }
-}

app/src/main/java/com/kunzisoft/keepass/database/element/PwEntry.kt

@@ -1,19 +0,0 @@
-package com.kunzisoft.keepass.database.element
-
-import android.os.Parcel
-import java.util.*
-
-abstract class PwEntry
-        <
-        GroupId,
-        EntryId,
-        ParentGroup: PwGroup<GroupId, EntryId, ParentGroup, Entry>,
-        Entry: PwEntry<GroupId, EntryId, ParentGroup, Entry>
-        >
-    : PwNode<EntryId, ParentGroup, Entry>, PwEntryInterface<ParentGroup> {
-
-    constructor() : super()
-
-    constructor(parcel: Parcel) : super(parcel)
-
-}

app/src/main/java/com/kunzisoft/keepass/database/element/PwEntryInterface.kt

@@ -1,12 +0,0 @@
-package com.kunzisoft.keepass.database.element
-
-interface PwEntryInterface<ParentGroup> : PwNodeInterface<ParentGroup> {
-
-    var username: String
-
-    var password: String
-
-    var url: String
-
-    var notes: String
-}

app/src/main/java/com/kunzisoft/keepass/database/element/PwEntryV3.kt

@@ -1,204 +0,0 @@
-/*
- * Copyright 2019 Jeremy Jamet / Kunzisoft.
- *     
- * This file is part of KeePass DX.
- *
- *  KeePass DX is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  KeePass DX is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with KeePass DX.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package com.kunzisoft.keepass.database.element
-
-import android.os.Parcel
-import android.os.Parcelable
-
-import java.io.UnsupportedEncodingException
-import java.util.Arrays
-import java.util.UUID
-
-
-/**
- * Structure containing information about one entry.
- *
- * <PRE>
- * One entry: [FIELDTYPE(FT)][FIELDSIZE(FS)][FIELDDATA(FD)]
- * [FT+FS+(FD)][FT+FS+(FD)][FT+FS+(FD)][FT+FS+(FD)][FT+FS+(FD)]...
- *
- * [ 2 bytes] FIELDTYPE
- * [ 4 bytes] FIELDSIZE, size of FIELDDATA in bytes
- * [ n bytes] FIELDDATA, n = FIELDSIZE
- *
- * Notes:
- * - Strings are stored in UTF-8 encoded form and are null-terminated.
- * - FIELDTYPE can be one of the FT_ constants.
-</PRE> *
- *
- * @author Naomaru Itoi <nao></nao>@phoneid.org>
- * @author Bill Zwicky <wrzwicky></wrzwicky>@pobox.com>
- * @author Dominik Reichl <dominik.reichl></dominik.reichl>@t-online.de>
- * @author Jeremy Jamet <jeremy.jamet></jeremy.jamet>@kunzisoft.com>
- */
-class PwEntryV3 : PwEntry<Int, UUID, PwGroupV3, PwEntryV3>, PwNodeV3Interface {
-
-    /** A string describing what is in pBinaryData  */
-    var binaryDesc = ""
-    /**
-     * @return the actual binaryData byte array.
-     */
-    var binaryData: ByteArray = ByteArray(0)
-        private set
-
-    // Determine if this is a MetaStream entry
-    val isMetaStream: Boolean
-        get() {
-            if (Arrays.equals(binaryData, ByteArray(0))) return false
-            if (notes.isEmpty()) return false
-            if (binaryDesc != PMS_ID_BINDESC) return false
-            if (title.isEmpty()) return false
-            if (title != PMS_ID_TITLE) return false
-            if (username.isEmpty()) return false
-            if (username != PMS_ID_USER) return false
-            if (url.isEmpty()) return false
-            return if (url != PMS_ID_URL) false else icon.isMetaStreamIcon
-        }
-
-    override fun initNodeId(): PwNodeId<UUID> {
-        return PwNodeIdUUID()
-    }
-
-    override fun copyNodeId(nodeId: PwNodeId<UUID>): PwNodeId<UUID> {
-        return PwNodeIdUUID(nodeId.id)
-    }
-
-    constructor() : super()
-
-    constructor(parcel: Parcel) : super(parcel) {
-        title = parcel.readString() ?: title
-        username = parcel.readString() ?: username
-        parcel.readByteArray(passwordBytes)
-        url = parcel.readString() ?: url
-        notes = parcel.readString() ?: notes
-        binaryDesc = parcel.readString() ?: binaryDesc
-        parcel.readByteArray(binaryData)
-    }
-
-    override fun readParentParcelable(parcel: Parcel): PwGroupV3? {
-        return parcel.readParcelable(PwGroupV3::class.java.classLoader)
-    }
-
-    override fun writeParentParcelable(parent: PwGroupV3?, parcel: Parcel, flags: Int) {
-        parcel.writeParcelable(parent, flags)
-    }
-
-    override fun writeToParcel(dest: Parcel, flags: Int) {
-        super.writeToParcel(dest, flags)
-        dest.writeString(title)
-        dest.writeString(username)
-        dest.writeByteArray(passwordBytes)
-        dest.writeString(url)
-        dest.writeString(notes)
-        dest.writeString(binaryDesc)
-        dest.writeByteArray(binaryData)
-    }
-
-    fun updateWith(source: PwEntryV3) {
-        super.updateWith(source)
-        title = source.title
-        username = source.username
-
-        val passLen = source.passwordBytes.size
-        passwordBytes = ByteArray(passLen)
-        System.arraycopy(source.passwordBytes, 0, passwordBytes, 0, passLen)
-
-        url = source.url
-        notes = source.notes
-        binaryDesc = source.binaryDesc
-
-        val descLen = source.binaryData.size
-        binaryData = ByteArray(descLen)
-        System.arraycopy(source.binaryData, 0, binaryData, 0, descLen)
-    }
-
-    override var username = ""
-
-    var passwordBytes: ByteArray = ByteArray(0)
-        private set
-
-    /** Securely erase old password before copying new.  */
-    fun setPassword(buf: ByteArray, offset: Int, len: Int) {
-        fill(passwordBytes, 0.toByte())
-        passwordBytes = ByteArray(len)
-        System.arraycopy(buf, offset, passwordBytes, 0, len)
-    }
-
-    /**
-     * @return the actual password byte array.
-     */
-    override var password: String
-        get() = String(passwordBytes)
-        set(pass) {
-            var password: ByteArray
-            try {
-                password = pass.toByteArray(charset("UTF-8"))
-                setPassword(password, 0, password.size)
-            } catch (e: UnsupportedEncodingException) {
-                password = pass.toByteArray()
-                setPassword(password, 0, password.size)
-            }
-
-        }
-
-    override var url = ""
-
-    override var notes = ""
-
-    override var title = ""
-
-    override val type: Type
-        get() = Type.ENTRY
-
-    fun setBinaryData(buf: ByteArray, offset: Int, len: Int) {
-        /** Securely erase old data before copying new.  */
-        fill(binaryData, 0.toByte())
-        binaryData = ByteArray(len)
-        System.arraycopy(buf, offset, binaryData, 0, len)
-    }
-
-    companion object {
-
-        /** Size of byte buffer needed to hold this struct.  */
-        private const val PMS_ID_BINDESC = "bin-stream"
-        private const val PMS_ID_TITLE = "Meta-Info"
-        private const val PMS_ID_USER = "SYSTEM"
-        private const val PMS_ID_URL = "$"
-
-        @JvmField
-        val CREATOR: Parcelable.Creator<PwEntryV3> = object : Parcelable.Creator<PwEntryV3> {
-            override fun createFromParcel(`in`: Parcel): PwEntryV3 {
-                return PwEntryV3(`in`)
-            }
-
-            override fun newArray(size: Int): Array<PwEntryV3?> {
-                return arrayOfNulls(size)
-            }
-        }
-
-        /**
-         * fill byte array
-         */
-        private fun fill(array: ByteArray, value: Byte) {
-            for (i in array.indices)
-                array[i] = value
-        }
-    }
-}

app/src/main/java/com/kunzisoft/keepass/database/element/PwNodeInterface.kt

@@ -1,31 +0,0 @@
-package com.kunzisoft.keepass.database.element
-
-import android.os.Parcelable
-
-interface PwNodeInterface<ParentGroup> : NodeTimeInterface, Parcelable {
-
-    var title: String
-
-    /**
-     * @return Visual icon
-     */
-    var icon: PwIcon
-
-    /**
-     * @return Type of Node
-     */
-    val type: Type
-
-    /**
-     * Retrieve the parent node
-     */
-    var parent: ParentGroup?
-
-    fun containsParent(): Boolean
-
-    fun afterAssignNewParent()
-
-    fun isContainedIn(container: ParentGroup): Boolean
-
-    fun touch(modified: Boolean, touchParents: Boolean)
-}

app/src/main/java/com/kunzisoft/keepass/database/element/PwNodeV3Interface.kt

@@ -1,18 +0,0 @@
-package com.kunzisoft.keepass.database.element
-
-import org.joda.time.LocalDateTime
-
-interface PwNodeV3Interface : NodeTimeInterface {
-
-    override var expires: Boolean
-        // If expireDate is before NEVER_EXPIRE date less 1 month (to be sure)
-        // it is not expires
-        get() = LocalDateTime(expiryTime.date)
-                .isBefore(LocalDateTime.fromDateFields(PwDate.NEVER_EXPIRE.date)
-                        .minusMonths(1))
-        set(value) {
-            if (!value)
-                expiryTime = PwDate.NEVER_EXPIRE
-        }
-}
-

app/src/main/java/com/kunzisoft/keepass/database/element/SortNodeEnum.kt

@@ -18,18 +18,16 @@
  *
  */
 
-package com.kunzisoft.keepass.database
+package com.kunzisoft.keepass.database.element
 
-import com.kunzisoft.keepass.database.element.Database
-import com.kunzisoft.keepass.database.element.EntryVersioned
-import com.kunzisoft.keepass.database.element.NodeVersioned
-import com.kunzisoft.keepass.database.element.Type
+import com.kunzisoft.keepass.database.element.node.Node
+import com.kunzisoft.keepass.database.element.node.Type
 import java.util.*
 
 enum class SortNodeEnum {
     DB, TITLE, USERNAME, CREATION_TIME, LAST_MODIFY_TIME, LAST_ACCESS_TIME;
 
-    fun getNodeComparator(ascending: Boolean, groupsBefore: Boolean, recycleBinBottom: Boolean): Comparator<NodeVersioned> {
+    fun getNodeComparator(ascending: Boolean, groupsBefore: Boolean, recycleBinBottom: Boolean): Comparator<Node> {
         return when (this) {
             DB -> NodeNaturalComparator(ascending, groupsBefore, false) // Force false because natural order contains recycle bin
             TITLE -> NodeTitleComparator(ascending, groupsBefore, recycleBinBottom)
@@ -40,11 +38,11 @@ enum class SortNodeEnum {
         }
     }
 
-    abstract class NodeComparator(var ascending: Boolean, var groupsBefore: Boolean, var recycleBinBottom: Boolean) : Comparator<NodeVersioned> {
+    abstract class NodeComparator(var ascending: Boolean, var groupsBefore: Boolean, var recycleBinBottom: Boolean) : Comparator<Node> {
 
-        abstract fun compareBySpecificOrder(object1: NodeVersioned, object2: NodeVersioned): Int
+        abstract fun compareBySpecificOrder(object1: Node, object2: Node): Int
 
-        private fun specificOrderOrHashIfEquals(object1: NodeVersioned, object2: NodeVersioned): Int {
+        private fun specificOrderOrHashIfEquals(object1: Node, object2: Node): Int {
             val specificOrderComp = compareBySpecificOrder(object1, object2)
 
             return if (specificOrderComp == 0) {
@@ -52,20 +50,20 @@ enum class SortNodeEnum {
             } else if (!ascending) -specificOrderComp else specificOrderComp // If descending, revert
         }
 
-        override fun compare(object1: NodeVersioned,object2: NodeVersioned): Int {
+        override fun compare(object1: Node, object2: Node): Int {
             if (object1 == object2)
                 return 0
 
             if (object1.type == Type.GROUP) {
                 return if (object2.type == Type.GROUP) {
                     // RecycleBin at end of groups
-                    if (recycleBinBottom) {
-                        if (Database.getInstance().recycleBin == object1)
+                    val database = Database.getInstance()
+                    if (database.isRecycleBinEnabled && recycleBinBottom) {
+                        if (database.recycleBin == object1)
                             return 1
-                        if (Database.getInstance().recycleBin == object2)
+                        if (database.recycleBin == object2)
                             return -1
                     }
-
                     specificOrderOrHashIfEquals(object1, object2)
                 } else if (object2.type == Type.ENTRY) {
                     if (groupsBefore)
@@ -99,7 +97,7 @@ enum class SortNodeEnum {
     class NodeNaturalComparator(ascending: Boolean, groupsBefore: Boolean, recycleBinBottom: Boolean)
         : NodeComparator(ascending, groupsBefore, recycleBinBottom) {
 
-        override fun compareBySpecificOrder(object1: NodeVersioned, object2: NodeVersioned): Int {
+        override fun compareBySpecificOrder(object1: Node, object2: Node): Int {
             return object1.nodePositionInParent.compareTo(object2.nodePositionInParent)
         }
     }
@@ -110,7 +108,7 @@ enum class SortNodeEnum {
     class NodeTitleComparator(ascending: Boolean, groupsBefore: Boolean, recycleBinBottom: Boolean)
         : NodeComparator(ascending, groupsBefore, recycleBinBottom) {
 
-        override fun compareBySpecificOrder(object1: NodeVersioned, object2: NodeVersioned): Int {
+        override fun compareBySpecificOrder(object1: Node, object2: Node): Int {
             return object1.title.compareTo(object2.title, ignoreCase = true)
         }
     }
@@ -121,11 +119,11 @@ enum class SortNodeEnum {
     class NodeUsernameComparator(ascending: Boolean, groupsBefore: Boolean, recycleBinBottom: Boolean)
         : NodeComparator(ascending, groupsBefore, recycleBinBottom) {
 
-        override fun compareBySpecificOrder(object1: NodeVersioned, object2: NodeVersioned): Int {
+        override fun compareBySpecificOrder(object1: Node, object2: Node): Int {
             if (object1.type == Type.ENTRY && object2.type == Type.ENTRY) {
                 // To get username if it's a ref
-                return (object1 as EntryVersioned).getEntryInfo(Database.getInstance()).username
-                        .compareTo((object2 as EntryVersioned).getEntryInfo(Database.getInstance()).username,
+                return (object1 as Entry).getEntryInfo(Database.getInstance()).username
+                        .compareTo((object2 as Entry).getEntryInfo(Database.getInstance()).username,
                                 ignoreCase = true)
             }
             return NodeTitleComparator(ascending, groupsBefore, recycleBinBottom).compare(object1, object2)
@@ -138,7 +136,7 @@ enum class SortNodeEnum {
     class NodeCreationComparator(ascending: Boolean, groupsBefore: Boolean, recycleBinBottom: Boolean)
         : NodeComparator(ascending, groupsBefore, recycleBinBottom) {
 
-        override fun compareBySpecificOrder(object1: NodeVersioned, object2: NodeVersioned): Int {
+        override fun compareBySpecificOrder(object1: Node, object2: Node): Int {
             return object1.creationTime.date
                     .compareTo(object2.creationTime.date)
         }
@@ -150,7 +148,7 @@ enum class SortNodeEnum {
     class NodeLastModificationComparator(ascending: Boolean, groupsBefore: Boolean, recycleBinBottom: Boolean)
         : NodeComparator(ascending, groupsBefore, recycleBinBottom) {
 
-        override fun compareBySpecificOrder(object1: NodeVersioned, object2: NodeVersioned): Int {
+        override fun compareBySpecificOrder(object1: Node, object2: Node): Int {
             return object1.lastModificationTime.date
                     .compareTo(object2.lastModificationTime.date)
         }
@@ -162,7 +160,7 @@ enum class SortNodeEnum {
     class NodeLastAccessComparator(ascending: Boolean, groupsBefore: Boolean, recycleBinBottom: Boolean)
         : NodeComparator(ascending, groupsBefore, recycleBinBottom) {
 
-        override fun compareBySpecificOrder(object1: NodeVersioned, object2: NodeVersioned): Int {
+        override fun compareBySpecificOrder(object1: Node, object2: Node): Int {
             return object1.lastAccessTime.date
                     .compareTo(object2.lastAccessTime.date)
         }

app/src/main/java/com/kunzisoft/keepass/database/element/database/BinaryPool.kt

@@ -17,28 +17,30 @@
  *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-package com.kunzisoft.keepass.database.element
+package com.kunzisoft.keepass.database.element.database
 
 import android.util.SparseArray
-import com.kunzisoft.keepass.database.element.security.ProtectedBinary
+import com.kunzisoft.keepass.database.element.security.BinaryAttachment
+import java.io.IOException
 
 class BinaryPool {
-    private val pool = SparseArray<ProtectedBinary>()
+    private val pool = SparseArray<BinaryAttachment>()
 
-    operator fun get(key: Int): ProtectedBinary? {
+    operator fun get(key: Int): BinaryAttachment? {
         return pool[key]
     }
 
-    fun put(key: Int, value: ProtectedBinary) {
+    fun put(key: Int, value: BinaryAttachment) {
         pool.put(key, value)
     }
 
-    fun doForEachBinary(action: (key: Int, binary: ProtectedBinary) -> Unit) {
+    fun doForEachBinary(action: (key: Int, binary: BinaryAttachment) -> Unit) {
         for (i in 0 until pool.size()) {
             action.invoke(i, pool.get(pool.keyAt(i)))
         }
     }
 
+    @Throws(IOException::class)
     fun clear() {
         doForEachBinary { _, binary ->
             binary.clear()
@@ -46,9 +48,10 @@ class BinaryPool {
         pool.clear()
     }
 
-    fun add(protectedBinary: ProtectedBinary) {
-        if (findKey(protectedBinary) != -1) return
-        pool.put(findUnusedKey(), protectedBinary)
+    fun add(fileBinary: BinaryAttachment) {
+        if (findKey(fileBinary) == null) {
+            pool.put(findUnusedKey(), fileBinary)
+        }
     }
 
     fun findUnusedKey(): Int {
@@ -58,10 +61,10 @@ class BinaryPool {
         return unusedKey
     }
 
-    fun findKey(pb: ProtectedBinary): Int {
+    fun findKey(pb: BinaryAttachment): Int? {
         for (i in 0 until pool.size()) {
             if (pool.get(pool.keyAt(i)) == pb) return i
         }
-        return -1
+        return null
     }
 }

app/src/main/java/com/kunzisoft/keepass/database/element/database/CompressionAlgorithm.kt

@@ -17,20 +17,33 @@
  *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-package com.kunzisoft.keepass.database.element
+package com.kunzisoft.keepass.database.element.database
 
 import android.content.res.Resources
+import android.os.Parcel
+import android.os.Parcelable
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.utils.ObjectNameResource
+import com.kunzisoft.keepass.utils.readEnum
+import com.kunzisoft.keepass.utils.writeEnum
+
 
 // Note: We can get away with using int's to store unsigned 32-bit ints
 //       since we won't do arithmetic on these values (also unlikely to
 //       reach negative ids).
-enum class PwCompressionAlgorithm : ObjectNameResource {
+enum class CompressionAlgorithm : ObjectNameResource, Parcelable {
 
     None,
     GZip;
 
+    override fun writeToParcel(dest: Parcel, flags: Int) {
+        dest.writeEnum(this)
+    }
+
+    override fun describeContents(): Int {
+        return 0
+    }
+
     override fun getName(resources: Resources): String {
         return when (this) {
             None -> resources.getString(R.string.compression_none)
@@ -38,4 +51,14 @@ enum class PwCompressionAlgorithm : ObjectNameResource {
         }
     }
 
+    companion object CREATOR : Parcelable.Creator<CompressionAlgorithm> {
+        override fun createFromParcel(parcel: Parcel): CompressionAlgorithm {
+            return parcel.readEnum<CompressionAlgorithm>() ?: None
+        }
+
+        override fun newArray(size: Int): Array<CompressionAlgorithm?> {
+            return arrayOfNulls(size)
+        }
+    }
+
 }

app/src/main/java/com/kunzisoft/keepass/database/element/database/DatabaseKDB.kt

@@ -17,11 +17,17 @@
  *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.kunzisoft.keepass.database.element
+package com.kunzisoft.keepass.database.element.database
 
 import com.kunzisoft.keepass.crypto.finalkey.FinalKeyFactory
 import com.kunzisoft.keepass.crypto.keyDerivation.KdfEngine
 import com.kunzisoft.keepass.crypto.keyDerivation.KdfFactory
+import com.kunzisoft.keepass.database.element.entry.EntryKDB
+import com.kunzisoft.keepass.database.element.group.GroupKDB
+import com.kunzisoft.keepass.database.element.node.NodeIdInt
+import com.kunzisoft.keepass.database.element.node.NodeIdUUID
+import com.kunzisoft.keepass.database.element.node.NodeVersioned
+import com.kunzisoft.keepass.database.element.security.EncryptionAlgorithm
 import com.kunzisoft.keepass.stream.NullOutputStream
 import java.io.IOException
 import java.io.InputStream
@@ -31,10 +37,12 @@ import java.security.NoSuchAlgorithmException
 import java.util.*
 import kotlin.collections.ArrayList
 
-class PwDatabaseV3 : PwDatabase<Int, UUID, PwGroupV3, PwEntryV3>() {
+class DatabaseKDB : DatabaseVersioned<Int, UUID, GroupKDB, EntryKDB>() {
 
     private var numKeyEncRounds: Int = 0
 
+    var backupGroupId: Int = BACKUP_FOLDER_UNDEFINED_ID
+
     private var kdfListV3: MutableList<KdfEngine> = ArrayList()
 
     override val version: String
@@ -44,22 +52,32 @@ class PwDatabaseV3 : PwDatabase<Int, UUID, PwGroupV3, PwEntryV3>() {
         kdfListV3.add(KdfFactory.aesKdf)
     }
 
+    private fun getGroupById(groupId: Int): GroupKDB? {
+        if (groupId == -1)
+            return null
+        return getGroupById(NodeIdInt(groupId))
+    }
+
+    // Retrieve backup group in index
+    val backupGroup: GroupKDB?
+        get() = if (backupGroupId == BACKUP_FOLDER_UNDEFINED_ID) null else getGroupById(backupGroupId)
+
     override val kdfEngine: KdfEngine?
         get() = kdfListV3[0]
 
     override val kdfAvailableList: List<KdfEngine>
         get() = kdfListV3
 
-    override val availableEncryptionAlgorithms: List<PwEncryptionAlgorithm>
+    override val availableEncryptionAlgorithms: List<EncryptionAlgorithm>
         get() {
-            val list = ArrayList<PwEncryptionAlgorithm>()
-            list.add(PwEncryptionAlgorithm.AESRijndael)
+            val list = ArrayList<EncryptionAlgorithm>()
+            list.add(EncryptionAlgorithm.AESRijndael)
             return list
         }
 
-    val rootGroups: List<PwGroupV3>
+    val rootGroups: List<GroupKDB>
         get() {
-            val kids = ArrayList<PwGroupV3>()
+            val kids = ArrayList<GroupKDB>()
             doForEachGroupInIndex { group ->
                 if (group.level == 0)
                     kids.add(group)
@@ -81,7 +99,7 @@ class PwDatabaseV3 : PwDatabase<Int, UUID, PwGroupV3, PwEntryV3>() {
         }
 
     init {
-        algorithm = PwEncryptionAlgorithm.AESRijndael
+        algorithm = EncryptionAlgorithm.AESRijndael
         numKeyEncRounds = DEFAULT_ENCRYPTION_ROUNDS
     }
 
@@ -90,10 +108,10 @@ class PwDatabaseV3 : PwDatabase<Int, UUID, PwGroupV3, PwEntryV3>() {
      *
      * @return new tree id
      */
-    override fun newGroupId(): PwNodeIdInt {
-        var newId: PwNodeIdInt
+    override fun newGroupId(): NodeIdInt {
+        var newId: NodeIdInt
         do {
-            newId = PwNodeIdInt()
+            newId = NodeIdInt()
         } while (isGroupIdUsed(newId))
 
         return newId
@@ -104,10 +122,10 @@ class PwDatabaseV3 : PwDatabase<Int, UUID, PwGroupV3, PwEntryV3>() {
      *
      * @return new tree id
      */
-    override fun newEntryId(): PwNodeIdUUID {
-        var newId: PwNodeIdUUID
+    override fun newEntryId(): NodeIdUUID {
+        var newId: NodeIdUUID
         do {
-            newId = PwNodeIdUUID()
+            newId = NodeIdUUID()
         } while (isEntryIdUsed(newId))
 
         return newId
@@ -152,12 +170,12 @@ class PwDatabaseV3 : PwDatabase<Int, UUID, PwGroupV3, PwEntryV3>() {
         return null
     }
 
-    override fun createGroup(): PwGroupV3 {
-        return PwGroupV3()
+    override fun createGroup(): GroupKDB {
+        return GroupKDB()
     }
 
-    override fun createEntry(): PwEntryV3 {
-        return PwEntryV3()
+    override fun createEntry(): EntryKDB {
+        return EntryKDB()
     }
 
     override fun rootCanContainsEntry(): Boolean {
@@ -168,10 +186,16 @@ class PwDatabaseV3 : PwDatabase<Int, UUID, PwGroupV3, PwEntryV3>() {
         return false
     }
 
-    override fun isBackup(group: PwGroupV3): Boolean {
-        var currentGroup: PwGroupV3? = group
+    override fun isInRecycleBin(group: GroupKDB): Boolean {
+        var currentGroup: GroupKDB? = group
+
+        if (currentGroup == backupGroup)
+            return true
+
         while (currentGroup != null) {
-            if (currentGroup.level == 0 && currentGroup.title.equals("Backup", ignoreCase = true)) {
+            if (currentGroup.level == 0
+                    && currentGroup.title.equals(BACKUP_FOLDER_TITLE, ignoreCase = true)) {
+                backupGroupId = currentGroup.id
                 return true
             }
             currentGroup = currentGroup.parent
@@ -179,10 +203,72 @@ class PwDatabaseV3 : PwDatabase<Int, UUID, PwGroupV3, PwEntryV3>() {
         return false
     }
 
+    /**
+     * Ensure that the recycle bin tree exists, if enabled and create it
+     * if it doesn't exist
+     */
+    fun ensureRecycleBinExists() {
+        rootGroups.forEach { currentGroup ->
+            if (currentGroup.level == 0
+                    && currentGroup.title.equals(BACKUP_FOLDER_TITLE, ignoreCase = true)) {
+                backupGroupId = currentGroup.id
+            }
+        }
+
+        if (backupGroup == null) {
+            // Create recycle bin
+            val recycleBinGroup = createGroup().apply {
+                title = BACKUP_FOLDER_TITLE
+                icon = iconFactory.trashIcon
+            }
+            addGroupTo(recycleBinGroup, rootGroup)
+            backupGroupId = recycleBinGroup.id
+        }
+    }
+
+    /**
+     * Define if a Node must be delete or recycle when remove action is called
+     * @param node Node to remove
+     * @return true if node can be recycle, false elsewhere
+     */
+    fun canRecycle(node: NodeVersioned<*, GroupKDB, EntryKDB>): Boolean {
+        // TODO #394 Backup pw3
+        return true
+    }
+
+    fun recycle(group: GroupKDB) {
+        ensureRecycleBinExists()
+        removeGroupFrom(group, group.parent)
+        addGroupTo(group, backupGroup)
+        group.afterAssignNewParent()
+    }
+
+    fun recycle(entry: EntryKDB) {
+        ensureRecycleBinExists()
+        removeEntryFrom(entry, entry.parent)
+        addEntryTo(entry, backupGroup)
+        entry.afterAssignNewParent()
+    }
+
+    fun undoRecycle(group: GroupKDB, origParent: GroupKDB) {
+        removeGroupFrom(group, backupGroup)
+        addGroupTo(group, origParent)
+    }
+
+    fun undoRecycle(entry: EntryKDB, origParent: GroupKDB) {
+        removeEntryFrom(entry, backupGroup)
+        addEntryTo(entry, origParent)
+    }
+
     companion object {
 
+        const val BACKUP_FOLDER_TITLE = "Backup"
+        private const val BACKUP_FOLDER_UNDEFINED_ID = -1
+
         private const val DEFAULT_ENCRYPTION_ROUNDS = 300
 
+        const val BUFFER_SIZE_BYTES = 3 * 128
+
         /**
          * Encrypt the master key a few times to make brute-force key-search harder
          * @throws IOException

app/src/main/java/com/kunzisoft/keepass/database/element/database/DatabaseKDBX.kt

@@ -17,17 +17,30 @@
  *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-package com.kunzisoft.keepass.database.element
+package com.kunzisoft.keepass.database.element.database
 
 import android.content.res.Resources
+import android.util.Base64
 import android.util.Log
-import biz.source_code.base64Coder.Base64Coder
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.crypto.CryptoUtil
 import com.kunzisoft.keepass.crypto.engine.AesEngine
 import com.kunzisoft.keepass.crypto.engine.CipherEngine
-import com.kunzisoft.keepass.crypto.keyDerivation.*
+import com.kunzisoft.keepass.crypto.keyDerivation.KdfEngine
+import com.kunzisoft.keepass.crypto.keyDerivation.KdfFactory
+import com.kunzisoft.keepass.crypto.keyDerivation.KdfParameters
+import com.kunzisoft.keepass.database.element.*
+import com.kunzisoft.keepass.database.element.database.DatabaseKDB.Companion.BACKUP_FOLDER_TITLE
+import com.kunzisoft.keepass.database.element.entry.EntryKDBX
+import com.kunzisoft.keepass.database.element.group.GroupKDBX
+import com.kunzisoft.keepass.database.element.icon.IconImageCustom
+import com.kunzisoft.keepass.database.element.node.NodeIdUUID
+import com.kunzisoft.keepass.database.element.node.NodeVersioned
+import com.kunzisoft.keepass.database.element.security.EncryptionAlgorithm
+import com.kunzisoft.keepass.database.element.security.MemoryProtectionConfig
 import com.kunzisoft.keepass.database.exception.UnknownKDF
+import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_32_3
+import com.kunzisoft.keepass.database.file.DatabaseHeaderKDBX.Companion.FILE_VERSION_32_4
 import com.kunzisoft.keepass.utils.VariantDictionary
 import org.w3c.dom.Node
 import org.w3c.dom.Text
@@ -41,29 +54,30 @@ import javax.xml.parsers.DocumentBuilderFactory
 import javax.xml.parsers.ParserConfigurationException
 
 
-class PwDatabaseV4 : PwDatabase<UUID, UUID, PwGroupV4, PwEntryV4> {
+class DatabaseKDBX : DatabaseVersioned<UUID, UUID, GroupKDBX, EntryKDBX> {
 
     var hmacKey: ByteArray? = null
         private set
     var dataCipher = AesEngine.CIPHER_UUID
     private var dataEngine: CipherEngine = AesEngine()
-    var compressionAlgorithm = PwCompressionAlgorithm.GZip
+    var compressionAlgorithm = CompressionAlgorithm.GZip
     var kdfParameters: KdfParameters? = null
-    private var kdfV4List: MutableList<KdfEngine> = ArrayList()
+    private var kdfList: MutableList<KdfEngine> = ArrayList()
     private var numKeyEncRounds: Long = 0
     var publicCustomData = VariantDictionary()
 
-    var name = "KeePass DX database"
-    var nameChanged = PwDate()
+    var kdbxVersion: Long = 0
+    var name = ""
+    var nameChanged = DateInstant()
     // TODO change setting date
-    var settingsChanged = PwDate()
+    var settingsChanged = DateInstant()
     var description = ""
-    var descriptionChanged = PwDate()
+    var descriptionChanged = DateInstant()
     var defaultUserName = ""
-    var defaultUserNameChanged = PwDate()
+    var defaultUserNameChanged = DateInstant()
 
     // TODO date
-    var keyLastChanged = PwDate()
+    var keyLastChanged = DateInstant()
     var keyChangeRecDays: Long = -1
     var keyChangeForceDays: Long = 1
     var isKeyChangeForceOnce = false
@@ -78,57 +92,68 @@ class PwDatabaseV4 : PwDatabase<UUID, UUID, PwGroupV4, PwEntryV4> {
     var recycleBinUUID: UUID = UUID_ZERO
     var recycleBinChanged = Date()
     var entryTemplatesGroup = UUID_ZERO
-    var entryTemplatesGroupChanged = PwDate()
+    var entryTemplatesGroupChanged = DateInstant()
     var historyMaxItems = DEFAULT_HISTORY_MAX_ITEMS
     var historyMaxSize = DEFAULT_HISTORY_MAX_SIZE
     var lastSelectedGroupUUID = UUID_ZERO
     var lastTopVisibleGroupUUID = UUID_ZERO
     var memoryProtection = MemoryProtectionConfig()
-    val deletedObjects = ArrayList<PwDeletedObject>()
-    val customIcons = ArrayList<PwIconCustom>()
+    val deletedObjects = ArrayList<DeletedObject>()
+    val customIcons = ArrayList<IconImageCustom>()
     val customData = HashMap<String, String>()
 
-    var binPool = BinaryPool()
+    var binaryPool = BinaryPool()
 
-    var localizedAppName = "KeePassDX" // TODO resource
+    var localizedAppName = "KeePassDX"
 
     init {
-        kdfV4List.add(KdfFactory.aesKdf)
-        kdfV4List.add(KdfFactory.argon2Kdf)
+        kdfList.add(KdfFactory.aesKdf)
+        kdfList.add(KdfFactory.argon2Kdf)
     }
 
     constructor()
 
-    constructor(databaseName: String) {
-        val groupV4 = createGroup().apply {
-            title = databaseName
+    /**
+     * Create a new database with a root group
+     */
+    constructor(databaseName: String, rootName: String) {
+        name = databaseName
+        val group = createGroup().apply {
+            title = rootName
             icon = iconFactory.folderIcon
         }
-        rootGroup = groupV4
-        addGroupIndex(groupV4)
+        rootGroup = group
+        addGroupIndex(group)
     }
 
     override val version: String
-        get() = "KeePass 2"
+        get() {
+            val kdbxStringVersion = when(kdbxVersion) {
+                FILE_VERSION_32_3 -> "3.1"
+                FILE_VERSION_32_4 -> "4.0"
+                else -> "UNKNOWN"
+            }
+            return "KeePass 2 - KDBX$kdbxStringVersion"
+        }
 
     override val kdfEngine: KdfEngine?
         get() = try {
-            getEngineV4(kdfParameters)
+            getEngineKDBX4(kdfParameters)
         } catch (unknownKDF: UnknownKDF) {
             Log.i(TAG, "Unable to retrieve KDF engine", unknownKDF)
             null
         }
 
     override val kdfAvailableList: List<KdfEngine>
-        get() = kdfV4List
+        get() = kdfList
 
     @Throws(UnknownKDF::class)
-    fun getEngineV4(kdfParameters: KdfParameters?): KdfEngine {
+    fun getEngineKDBX4(kdfParameters: KdfParameters?): KdfEngine {
         val unknownKDFException = UnknownKDF()
         if (kdfParameters == null) {
             throw unknownKDFException
         }
-        for (engine in kdfV4List) {
+        for (engine in kdfList) {
             if (engine.uuid == kdfParameters.uuid) {
                 return engine
             }
@@ -136,20 +161,53 @@ class PwDatabaseV4 : PwDatabase<UUID, UUID, PwGroupV4, PwEntryV4> {
         throw unknownKDFException
     }
 
-    val availableCompressionAlgorithms: List<PwCompressionAlgorithm>
+    val availableCompressionAlgorithms: List<CompressionAlgorithm>
         get() {
-            val list = ArrayList<PwCompressionAlgorithm>()
-            list.add(PwCompressionAlgorithm.None)
-            list.add(PwCompressionAlgorithm.GZip)
+            val list = ArrayList<CompressionAlgorithm>()
+            list.add(CompressionAlgorithm.None)
+            list.add(CompressionAlgorithm.GZip)
             return list
         }
 
-    override val availableEncryptionAlgorithms: List<PwEncryptionAlgorithm>
+    fun changeBinaryCompression(oldCompression: CompressionAlgorithm,
+                                newCompression: CompressionAlgorithm) {
+        binaryPool.doForEachBinary { key, binary ->
+
+            try {
+                when (oldCompression) {
+                    CompressionAlgorithm.None -> {
+                        when (newCompression) {
+                            CompressionAlgorithm.None -> {
+                            }
+                            CompressionAlgorithm.GZip -> {
+                                // To compress, create a new binary with file
+                                binary.compress(BUFFER_SIZE_BYTES)
+                            }
+                        }
+                    }
+                    CompressionAlgorithm.GZip -> {
+                        when (newCompression) {
+                            CompressionAlgorithm.None -> {
+                                // To decompress, create a new binary with file
+                                binary.decompress(BUFFER_SIZE_BYTES)
+                            }
+                            CompressionAlgorithm.GZip -> {
+                            }
+                        }
+                    }
+                }
+            } catch (e: Exception) {
+                Log.e(TAG, "Unable to change compression for $key")
+            }
+        }
+    }
+
+    override val availableEncryptionAlgorithms: List<EncryptionAlgorithm>
         get() {
-            val list = ArrayList<PwEncryptionAlgorithm>()
-            list.add(PwEncryptionAlgorithm.AESRijndael)
-            list.add(PwEncryptionAlgorithm.Twofish)
-            list.add(PwEncryptionAlgorithm.ChaCha20)
+            val list = ArrayList<EncryptionAlgorithm>()
+            list.add(EncryptionAlgorithm.AESRijndael)
+            list.add(EncryptionAlgorithm.Twofish)
+            list.add(EncryptionAlgorithm.ChaCha20)
             return list
         }
 
@@ -197,31 +255,31 @@ class PwDatabaseV4 : PwDatabase<UUID, UUID, PwGroupV4, PwEntryV4> {
     override val passwordEncoding: String
         get() = "UTF-8"
 
-    fun getGroupByUUID(groupUUID: UUID): PwGroupV4? {
+    private fun getGroupByUUID(groupUUID: UUID): GroupKDBX? {
         if (groupUUID == UUID_ZERO)
             return null
-        return getGroupById(PwNodeIdUUID(groupUUID))
+        return getGroupById(NodeIdUUID(groupUUID))
     }
 
     // Retrieve recycle bin in index
-    val recycleBin: PwGroupV4?
-        get() = getGroupByUUID(recycleBinUUID)
+    val recycleBin: GroupKDBX?
+        get() = if (recycleBinUUID == UUID_ZERO) null else getGroupByUUID(recycleBinUUID)
 
-    val lastSelectedGroup: PwGroupV4?
+    val lastSelectedGroup: GroupKDBX?
         get() = getGroupByUUID(lastSelectedGroupUUID)
 
-    val lastTopVisibleGroup: PwGroupV4?
+    val lastTopVisibleGroup: GroupKDBX?
         get() = getGroupByUUID(lastTopVisibleGroupUUID)
 
     fun setDataEngine(dataEngine: CipherEngine) {
         this.dataEngine = dataEngine
     }
 
-    fun getCustomIcons(): List<PwIconCustom> {
+    fun getCustomIcons(): List<IconImageCustom> {
         return customIcons
     }
 
-    fun addCustomIcon(customIcon: PwIconCustom) {
+    fun addCustomIcon(customIcon: IconImageCustom) {
         this.customIcons.add(customIcon)
     }
 
@@ -264,7 +322,7 @@ class PwDatabaseV4 : PwDatabase<UUID, UUID, PwGroupV4, PwEntryV4> {
     fun makeFinalKey(masterSeed: ByteArray) {
 
         kdfParameters?.let { keyDerivationFunctionParameters ->
-            val kdfEngine = getEngineV4(keyDerivationFunctionParameters)
+            val kdfEngine = getEngineKDBX4(keyDerivationFunctionParameters)
 
             var transformedMasterKey = kdfEngine.transform(masterKey, keyDerivationFunctionParameters)
             if (transformedMasterKey.size != 32) {
@@ -326,7 +384,7 @@ class PwDatabaseV4 : PwDatabase<UUID, UUID, PwGroupV4, PwEntryV4> {
                                 val text = children2.item(k)
                                 if (text.nodeType == Node.TEXT_NODE) {
                                     val txt = text as Text
-                                    return Base64Coder.decode(txt.nodeValue)
+                                    return Base64.decode(txt.nodeValue, BASE_64_FLAG)
                                 }
                             }
                         }
@@ -340,42 +398,42 @@ class PwDatabaseV4 : PwDatabase<UUID, UUID, PwGroupV4, PwEntryV4> {
         return null
     }
 
-    override fun newGroupId(): PwNodeIdUUID {
-        var newId: PwNodeIdUUID
+    override fun newGroupId(): NodeIdUUID {
+        var newId: NodeIdUUID
         do {
-            newId = PwNodeIdUUID()
+            newId = NodeIdUUID()
         } while (isGroupIdUsed(newId))
 
         return newId
     }
 
-    override fun newEntryId(): PwNodeIdUUID {
-        var newId: PwNodeIdUUID
+    override fun newEntryId(): NodeIdUUID {
+        var newId: NodeIdUUID
         do {
-            newId = PwNodeIdUUID()
+            newId = NodeIdUUID()
         } while (isEntryIdUsed(newId))
 
         return newId
     }
 
-    override fun createGroup(): PwGroupV4 {
-        return PwGroupV4()
+    override fun createGroup(): GroupKDBX {
+        return GroupKDBX()
     }
 
-    override fun createEntry(): PwEntryV4 {
-        return PwEntryV4()
+    override fun createEntry(): EntryKDBX {
+        return EntryKDBX()
     }
 
     override fun rootCanContainsEntry(): Boolean {
         return true
     }
 
-    override fun isBackup(group: PwGroupV4): Boolean {
+    override fun isInRecycleBin(group: GroupKDBX): Boolean {
         // To keep compatibility with old V1 databases
-        var currentGroup: PwGroupV4? = group
+        var currentGroup: GroupKDBX? = group
         while (currentGroup != null) {
             if (currentGroup.parent == rootGroup
-                    && currentGroup.title.equals("Backup", ignoreCase = true)) {
+                    && currentGroup.title.equals(BACKUP_FOLDER_TITLE, ignoreCase = true)) {
                 return true
             }
             currentGroup = currentGroup.parent
@@ -393,7 +451,7 @@ class PwDatabaseV4 : PwDatabase<UUID, UUID, PwGroupV4, PwEntryV4> {
      * Ensure that the recycle bin tree exists, if enabled and create it
      * if it doesn't exist
      */
-    private fun ensureRecycleBin(resources: Resources) {
+    fun ensureRecycleBinExists(resources: Resources) {
         if (recycleBin == null) {
             // Create recycle bin
             val recycleBinGroup = createGroup().apply {
@@ -409,61 +467,68 @@ class PwDatabaseV4 : PwDatabase<UUID, UUID, PwGroupV4, PwEntryV4> {
         }
     }
 
+    fun removeRecycleBin() {
+        if (recycleBin != null) {
+            recycleBinUUID = UUID_ZERO
+            recycleBinChanged = DateInstant().date
+        }
+    }
+
     /**
      * Define if a Node must be delete or recycle when remove action is called
      * @param node Node to remove
      * @return true if node can be recycle, false elsewhere
      */
-    fun canRecycle(node: PwNode<*, PwGroupV4, PwEntryV4>): Boolean {
+    fun canRecycle(node: NodeVersioned<*, GroupKDBX, EntryKDBX>): Boolean {
         if (!isRecycleBinEnabled)
             return false
         if (recycleBin == null)
-            return true
+            return false
         if (!node.isContainedIn(recycleBin!!))
             return true
         return false
     }
 
-    fun recycle(group: PwGroupV4, resources: Resources) {
-        ensureRecycleBin(resources)
+    fun recycle(group: GroupKDBX, resources: Resources) {
+        ensureRecycleBinExists(resources)
         removeGroupFrom(group, group.parent)
         addGroupTo(group, recycleBin)
         group.afterAssignNewParent()
     }
 
-    fun recycle(entry: PwEntryV4, resources: Resources) {
-        ensureRecycleBin(resources)
+    fun recycle(entry: EntryKDBX, resources: Resources) {
+        ensureRecycleBinExists(resources)
         removeEntryFrom(entry, entry.parent)
         addEntryTo(entry, recycleBin)
         entry.afterAssignNewParent()
     }
 
-    fun undoRecycle(group: PwGroupV4, origParent: PwGroupV4) {
+    fun undoRecycle(group: GroupKDBX, origParent: GroupKDBX) {
         removeGroupFrom(group, recycleBin)
         addGroupTo(group, origParent)
     }
 
-    fun undoRecycle(entry: PwEntryV4, origParent: PwGroupV4) {
+    fun undoRecycle(entry: EntryKDBX, origParent: GroupKDBX) {
         removeEntryFrom(entry, recycleBin)
         addEntryTo(entry, origParent)
     }
 
-    fun getDeletedObjects(): List<PwDeletedObject> {
+    fun getDeletedObjects(): List<DeletedObject> {
         return deletedObjects
     }
 
-    fun addDeletedObject(deletedObject: PwDeletedObject) {
+    fun addDeletedObject(deletedObject: DeletedObject) {
         this.deletedObjects.add(deletedObject)
     }
 
-    override fun removeEntryFrom(entryToRemove: PwEntryV4, parent: PwGroupV4?) {
+    override fun removeEntryFrom(entryToRemove: EntryKDBX, parent: GroupKDBX?) {
         super.removeEntryFrom(entryToRemove, parent)
-        deletedObjects.add(PwDeletedObject(entryToRemove.id))
+        deletedObjects.add(DeletedObject(entryToRemove.id))
     }
 
-    override fun undoDeleteEntryFrom(entry: PwEntryV4, origParent: PwGroupV4?) {
+    override fun undoDeleteEntryFrom(entry: EntryKDBX, origParent: GroupKDBX?) {
         super.undoDeleteEntryFrom(entry, origParent)
-        deletedObjects.remove(PwDeletedObject(entry.id))
+        deletedObjects.remove(DeletedObject(entry.id))
     }
 
     fun containsPublicCustomData(): Boolean {
@@ -477,12 +542,16 @@ class PwDatabaseV4 : PwDatabase<UUID, UUID, PwGroupV4, PwEntryV4> {
     }
 
     override fun clearCache() {
+        try {
             super.clearCache()
-        binPool.clear()
+            binaryPool.clear()
+        } catch (e: Exception) {
+            Log.e(TAG, "Unable to clear cache", e)
+        }
     }
 
     companion object {
-        private val TAG = PwDatabaseV4::class.java.name
+        private val TAG = DatabaseKDBX::class.java.name
 
         private const val DEFAULT_HISTORY_MAX_ITEMS = 10 // -1 unlimited
         private const val DEFAULT_HISTORY_MAX_SIZE = (6 * 1024 * 1024).toLong() // -1 unlimited
@@ -492,5 +561,9 @@ class PwDatabaseV4 : PwDatabase<UUID, UUID, PwGroupV4, PwEntryV4> {
         //private const val VersionElementName = "Version";
         private const val KeyElementName = "Key"
         private const val KeyDataElementName = "Data"
+
+        const val BASE_64_FLAG = Base64.NO_WRAP
+
+        const val BUFFER_SIZE_BYTES = 3 * 128
     }
 }

app/src/main/java/com/kunzisoft/keepass/database/element/database/DatabaseVersioned.kt

@@ -17,26 +17,32 @@
  *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-package com.kunzisoft.keepass.database.element
+package com.kunzisoft.keepass.database.element.database
 
 import com.kunzisoft.keepass.crypto.keyDerivation.KdfEngine
-import com.kunzisoft.keepass.database.exception.LoadDatabaseDuplicateUuidException
-import com.kunzisoft.keepass.database.exception.LoadDatabaseKeyFileEmptyException
-import com.kunzisoft.keepass.utils.MemoryUtil
+import com.kunzisoft.keepass.database.element.security.EncryptionAlgorithm
+import com.kunzisoft.keepass.database.element.entry.EntryVersioned
+import com.kunzisoft.keepass.database.element.group.GroupVersioned
+import com.kunzisoft.keepass.database.element.icon.IconImageFactory
+import com.kunzisoft.keepass.database.element.node.NodeId
+import com.kunzisoft.keepass.database.element.node.Type
+import com.kunzisoft.keepass.database.exception.DuplicateUuidDatabaseException
+import com.kunzisoft.keepass.database.exception.KeyFileEmptyDatabaseException
+import org.apache.commons.io.IOUtils
 import java.io.*
 import java.security.MessageDigest
 import java.security.NoSuchAlgorithmException
 import java.util.*
 
-abstract class PwDatabase<
+abstract class DatabaseVersioned<
         GroupId,
         EntryId,
-        Group : PwGroup<GroupId, EntryId, Group, Entry>,
-        Entry : PwEntry<GroupId, EntryId, Group, Entry>
+        Group : GroupVersioned<GroupId, EntryId, Group, Entry>,
+        Entry : EntryVersioned<GroupId, EntryId, Group, Entry>
         > {
 
     // Algorithm used to encrypt the database
-    protected var algorithm: PwEncryptionAlgorithm? = null
+    protected var algorithm: EncryptionAlgorithm? = null
 
     abstract val kdfEngine: KdfEngine?
 
@@ -46,13 +52,13 @@ abstract class PwDatabase<
     var finalKey: ByteArray? = null
         protected set
 
-    var iconFactory = PwIconFactory()
+    var iconFactory = IconImageFactory()
         protected set
 
     var changeDuplicateId = false
 
-    private var groupIndexes = LinkedHashMap<PwNodeId<GroupId>, Group>()
-    private var entryIndexes = LinkedHashMap<PwNodeId<EntryId>, Entry>()
+    private var groupIndexes = LinkedHashMap<NodeId<GroupId>, Group>()
+    private var entryIndexes = LinkedHashMap<NodeId<EntryId>, Entry>()
 
     abstract val version: String
 
@@ -60,15 +66,15 @@ abstract class PwDatabase<
 
     abstract var numberKeyEncryptionRounds: Long
 
-    var encryptionAlgorithm: PwEncryptionAlgorithm
+    var encryptionAlgorithm: EncryptionAlgorithm
         get() {
-            return algorithm ?: PwEncryptionAlgorithm.AESRijndael
+            return algorithm ?: EncryptionAlgorithm.AESRijndael
         }
         set(algorithm) {
             this.algorithm = algorithm
         }
 
-    abstract val availableEncryptionAlgorithms: List<PwEncryptionAlgorithm>
+    abstract val availableEncryptionAlgorithms: List<EncryptionAlgorithm>
 
     var rootGroup: Group? = null
 
@@ -124,7 +130,7 @@ abstract class PwDatabase<
     protected fun getFileKey(keyInputStream: InputStream): ByteArray {
 
         val keyByteArrayOutputStream = ByteArrayOutputStream()
-        MemoryUtil.copyStream(keyInputStream, keyByteArrayOutputStream)
+        IOUtils.copy(keyInputStream, keyByteArrayOutputStream)
         val keyData = keyByteArrayOutputStream.toByteArray()
 
         val keyByteArrayInputStream = ByteArrayInputStream(keyData)
@@ -134,7 +140,7 @@ abstract class PwDatabase<
         }
 
         when (keyData.size.toLong()) {
-            0L -> throw LoadDatabaseKeyFileEmptyException()
+            0L -> throw KeyFileEmptyDatabaseException()
             32L -> return keyData
             64L -> try {
                 return hexStringToByteArray(String(keyData))
@@ -192,9 +198,9 @@ abstract class PwDatabase<
      * -------------------------------------
      */
 
-    abstract fun newGroupId(): PwNodeId<GroupId>
+    abstract fun newGroupId(): NodeId<GroupId>
 
-    abstract fun newEntryId(): PwNodeId<EntryId>
+    abstract fun newEntryId(): NodeId<EntryId>
 
     abstract fun createGroup(): Group
 
@@ -219,7 +225,7 @@ abstract class PwDatabase<
      * ID number to check for
      * @return True if the ID is used, false otherwise
      */
-    fun isGroupIdUsed(id: PwNodeId<GroupId>): Boolean {
+    fun isGroupIdUsed(id: NodeId<GroupId>): Boolean {
         return groupIndexes.containsKey(id)
     }
 
@@ -234,7 +240,7 @@ abstract class PwDatabase<
         }
     }
 
-    fun getGroupById(id: PwNodeId<GroupId>): Group? {
+    fun getGroupById(id: NodeId<GroupId>): Group? {
         return this.groupIndexes[id]
     }
 
@@ -247,7 +253,7 @@ abstract class PwDatabase<
                 group.parent?.addChildGroup(group)
                 this.groupIndexes[newGroupId] = group
             } else {
-                throw LoadDatabaseDuplicateUuidException(Type.GROUP, groupId)
+                throw DuplicateUuidDatabaseException(Type.GROUP, groupId)
             }
         } else {
             this.groupIndexes[groupId] = group
@@ -275,7 +281,7 @@ abstract class PwDatabase<
         }
     }
 
-    fun isEntryIdUsed(id: PwNodeId<EntryId>): Boolean {
+    fun isEntryIdUsed(id: NodeId<EntryId>): Boolean {
         return entryIndexes.containsKey(id)
     }
 
@@ -283,7 +289,7 @@ abstract class PwDatabase<
         return entryIndexes.values
     }
 
-    fun getEntryById(id: PwNodeId<EntryId>): Entry? {
+    fun getEntryById(id: NodeId<EntryId>): Entry? {
         return this.entryIndexes[id]
     }
 
@@ -296,7 +302,7 @@ abstract class PwDatabase<
                 entry.parent?.addChildEntry(entry)
                 this.entryIndexes[newEntryId] = entry
             } else {
-                throw LoadDatabaseDuplicateUuidException(Type.ENTRY, entryId)
+                throw DuplicateUuidDatabaseException(Type.ENTRY, entryId)
             }
         } else {
             this.entryIndexes[entryId] = entry
@@ -376,19 +382,19 @@ abstract class PwDatabase<
         addEntryTo(entry, origParent)
     }
 
-    abstract fun isBackup(group: Group): Boolean
+    abstract fun isInRecycleBin(group: Group): Boolean
 
     fun isGroupSearchable(group: Group?, omitBackup: Boolean): Boolean {
         if (group == null)
             return false
-        if (omitBackup && isBackup(group))
+        if (omitBackup && isInRecycleBin(group))
             return false
         return true
     }
 
     companion object {
 
-        private const val TAG = "PwDatabase"
+        private const val TAG = "DatabaseVersioned"
 
         val UUID_ZERO = UUID(0, 0)
 

app/src/main/java/com/kunzisoft/keepass/database/element/entry/AutoType.kt

@@ -17,12 +17,12 @@
  *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-package com.kunzisoft.keepass.database.element
+package com.kunzisoft.keepass.database.element.entry
 
 import android.os.Parcel
 import android.os.Parcelable
 
-import com.kunzisoft.keepass.utils.MemoryUtil
+import com.kunzisoft.keepass.utils.ParcelableUtil
 
 import java.util.HashMap
 
@@ -48,7 +48,7 @@ class AutoType : Parcelable {
         this.enabled = parcel.readByte().toInt() != 0
         this.obfuscationOptions = parcel.readLong()
         this.defaultSequence = parcel.readString() ?: defaultSequence
-        this.windowSeqPairs = MemoryUtil.readStringParcelableMap(parcel)
+        this.windowSeqPairs = ParcelableUtil.readStringParcelableMap(parcel)
     }
 
     override fun describeContents(): Int {
@@ -59,7 +59,7 @@ class AutoType : Parcelable {
         dest.writeByte((if (enabled) 1 else 0).toByte())
         dest.writeLong(obfuscationOptions)
         dest.writeString(defaultSequence)
-        MemoryUtil.writeStringParcelableMap(dest, windowSeqPairs)
+        ParcelableUtil.writeStringParcelableMap(dest, windowSeqPairs)
     }
 
     fun put(key: String, value: String) {

app/src/main/java/com/kunzisoft/keepass/database/element/entry/EntryKDB.kt

@@ -0,0 +1,157 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *     
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.kunzisoft.keepass.database.element.entry
+
+import android.os.Parcel
+import android.os.Parcelable
+import com.kunzisoft.keepass.database.element.group.GroupKDB
+import com.kunzisoft.keepass.database.element.node.NodeId
+import com.kunzisoft.keepass.database.element.node.NodeIdUUID
+import com.kunzisoft.keepass.database.element.node.NodeKDBInterface
+import com.kunzisoft.keepass.database.element.node.Type
+import com.kunzisoft.keepass.database.element.security.BinaryAttachment
+import java.util.*
+
+/**
+ * Structure containing information about one entry.
+ *
+ * <PRE>
+ * One entry: [FIELDTYPE(FT)][FIELDSIZE(FS)][FIELDDATA(FD)]
+ * [FT+FS+(FD)][FT+FS+(FD)][FT+FS+(FD)][FT+FS+(FD)][FT+FS+(FD)]...
+ *
+ * [ 2 bytes] FIELDTYPE
+ * [ 4 bytes] FIELDSIZE, size of FIELDDATA in bytes
+ * [ n bytes] FIELDDATA, n = FIELDSIZE
+ *
+ * Notes:
+ * - Strings are stored in UTF-8 encoded form and are null-terminated.
+ * - FIELDTYPE can be one of the FT_ constants.
+</PRE> *
+ *
+ * @author Naomaru Itoi <nao></nao>@phoneid.org>
+ * @author Bill Zwicky <wrzwicky></wrzwicky>@pobox.com>
+ * @author Dominik Reichl <dominik.reichl></dominik.reichl>@t-online.de>
+ * @author Jeremy Jamet <jeremy.jamet></jeremy.jamet>@kunzisoft.com>
+ */
+class EntryKDB : EntryVersioned<Int, UUID, GroupKDB, EntryKDB>, NodeKDBInterface {
+
+    /** A string describing what is in binaryData  */
+    var binaryDescription = ""
+    var binaryData: BinaryAttachment? = null
+
+    // Determine if this is a MetaStream entry
+    val isMetaStream: Boolean
+        get() {
+            if (notes.isEmpty()) return false
+            if (binaryDescription != PMS_ID_BINDESC) return false
+            if (title.isEmpty()) return false
+            if (title != PMS_ID_TITLE) return false
+            if (username.isEmpty()) return false
+            if (username != PMS_ID_USER) return false
+            if (url.isEmpty()) return false
+            return if (url != PMS_ID_URL) false else icon.isMetaStreamIcon
+        }
+
+    override fun initNodeId(): NodeId<UUID> {
+        return NodeIdUUID()
+    }
+
+    override fun copyNodeId(nodeId: NodeId<UUID>): NodeId<UUID> {
+        return NodeIdUUID(nodeId.id)
+    }
+
+    constructor() : super()
+
+    constructor(parcel: Parcel) : super(parcel) {
+        title = parcel.readString() ?: title
+        username = parcel.readString() ?: username
+        password = parcel.readString() ?: password
+        url = parcel.readString() ?: url
+        notes = parcel.readString() ?: notes
+        binaryDescription = parcel.readString() ?: binaryDescription
+        binaryData = parcel.readParcelable(BinaryAttachment::class.java.classLoader)
+    }
+
+    override fun readParentParcelable(parcel: Parcel): GroupKDB? {
+        return parcel.readParcelable(GroupKDB::class.java.classLoader)
+    }
+
+    override fun writeParentParcelable(parent: GroupKDB?, parcel: Parcel, flags: Int) {
+        parcel.writeParcelable(parent, flags)
+    }
+
+    override fun writeToParcel(dest: Parcel, flags: Int) {
+        super.writeToParcel(dest, flags)
+        dest.writeString(title)
+        dest.writeString(username)
+        dest.writeString(password)
+        dest.writeString(url)
+        dest.writeString(notes)
+        dest.writeString(binaryDescription)
+        dest.writeParcelable(binaryData, flags)
+    }
+
+    fun updateWith(source: EntryKDB) {
+        super.updateWith(source)
+        title = source.title
+        username = source.username
+        password = source.password
+        url = source.url
+        notes = source.notes
+        binaryDescription = source.binaryDescription
+        binaryData = source.binaryData
+    }
+
+    override var username = ""
+
+    /**
+     * @return the actual password byte array.
+     */
+    override var password = ""
+
+    override var url = ""
+
+    override var notes = ""
+
+    override var title = ""
+
+    override val type: Type
+        get() = Type.ENTRY
+
+    companion object {
+
+        /** Size of byte buffer needed to hold this struct.  */
+        private const val PMS_ID_BINDESC = "bin-stream"
+        private const val PMS_ID_TITLE = "Meta-Info"
+        private const val PMS_ID_USER = "SYSTEM"
+        private const val PMS_ID_URL = "$"
+
+        @JvmField
+        val CREATOR: Parcelable.Creator<EntryKDB> = object : Parcelable.Creator<EntryKDB> {
+            override fun createFromParcel(parcel: Parcel): EntryKDB {
+                return EntryKDB(parcel)
+            }
+
+            override fun newArray(size: Int): Array<EntryKDB?> {
+                return arrayOfNulls(size)
+            }
+        }
+    }
+}

app/src/main/java/com/kunzisoft/keepass/database/element/entry/EntryKDBX.kt

@@ -17,24 +17,34 @@
  *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-package com.kunzisoft.keepass.database.element
+package com.kunzisoft.keepass.database.element.entry
 
 import android.os.Parcel
 import android.os.Parcelable
-import com.kunzisoft.keepass.database.element.security.ProtectedBinary
+import com.kunzisoft.keepass.database.element.*
+import com.kunzisoft.keepass.database.element.database.DatabaseKDBX
+import com.kunzisoft.keepass.database.element.group.GroupKDBX
+import com.kunzisoft.keepass.database.element.icon.IconImage
+import com.kunzisoft.keepass.database.element.icon.IconImageCustom
+import com.kunzisoft.keepass.database.element.icon.IconImageStandard
+import com.kunzisoft.keepass.database.element.node.NodeId
+import com.kunzisoft.keepass.database.element.node.NodeIdUUID
+import com.kunzisoft.keepass.database.element.node.NodeKDBXInterface
+import com.kunzisoft.keepass.database.element.node.Type
+import com.kunzisoft.keepass.database.element.security.BinaryAttachment
 import com.kunzisoft.keepass.database.element.security.ProtectedString
-import com.kunzisoft.keepass.utils.MemoryUtil
+import com.kunzisoft.keepass.utils.ParcelableUtil
 import java.util.*
 
-class PwEntryV4 : PwEntry<UUID, UUID, PwGroupV4, PwEntryV4>, PwNodeV4Interface {
+class EntryKDBX : EntryVersioned<UUID, UUID, GroupKDBX, EntryKDBX>, NodeKDBXInterface {
 
     // To decode each field not parcelable
     @Transient
-    private var mDatabase: PwDatabaseV4? = null
+    private var mDatabase: DatabaseKDBX? = null
     @Transient
     private var mDecodeRef = false
 
-    override var icon: PwIcon
+    override var icon: IconImage
         get() {
             return when {
                 iconCustom.isUnknown -> super.icon
@@ -42,19 +52,19 @@ class PwEntryV4 : PwEntry<UUID, UUID, PwGroupV4, PwEntryV4>, PwNodeV4Interface {
             }
         }
         set(value) {
-            if (value is PwIconStandard)
-                iconCustom = PwIconCustom.UNKNOWN_ICON
+            if (value is IconImageStandard)
+                iconCustom = IconImageCustom.UNKNOWN_ICON
             super.icon = value
         }
-    var iconCustom = PwIconCustom.UNKNOWN_ICON
+    var iconCustom = IconImageCustom.UNKNOWN_ICON
     private var customData = HashMap<String, String>()
     var fields = HashMap<String, ProtectedString>()
-    val binaries = HashMap<String, ProtectedBinary>()
+    var binaries = HashMap<String, BinaryAttachment>()
     var foregroundColor = ""
     var backgroundColor = ""
     var overrideURL = ""
     var autoType = AutoType()
-    var history = ArrayList<PwEntryV4>()
+    var history = ArrayList<EntryKDBX>()
     var additional = ""
     var tags = ""
 
@@ -93,12 +103,12 @@ class PwEntryV4 : PwEntry<UUID, UUID, PwGroupV4, PwEntryV4>, PwNodeV4Interface {
     constructor() : super()
 
     constructor(parcel: Parcel) : super(parcel) {
-        iconCustom = parcel.readParcelable(PwIconCustom::class.java.classLoader) ?: iconCustom
+        iconCustom = parcel.readParcelable(IconImageCustom::class.java.classLoader) ?: iconCustom
         usageCount = parcel.readLong()
-        locationChanged = parcel.readParcelable(PwDate::class.java.classLoader) ?: locationChanged
-        customData = MemoryUtil.readStringParcelableMap(parcel)
-        fields = MemoryUtil.readStringParcelableMap(parcel, ProtectedString::class.java)
-        // TODO binaries = MemoryUtil.readStringParcelableMap(parcel, ProtectedBinary.class);
+        locationChanged = parcel.readParcelable(DateInstant::class.java.classLoader) ?: locationChanged
+        customData = ParcelableUtil.readStringParcelableMap(parcel)
+        fields = ParcelableUtil.readStringParcelableMap(parcel, ProtectedString::class.java)
+        binaries = ParcelableUtil.readStringParcelableMap(parcel, BinaryAttachment::class.java)
         foregroundColor = parcel.readString() ?: foregroundColor
         backgroundColor = parcel.readString() ?: backgroundColor
         overrideURL = parcel.readString() ?: overrideURL
@@ -114,9 +124,9 @@ class PwEntryV4 : PwEntry<UUID, UUID, PwGroupV4, PwEntryV4>, PwNodeV4Interface {
         dest.writeParcelable(iconCustom, flags)
         dest.writeLong(usageCount)
         dest.writeParcelable(locationChanged, flags)
-        MemoryUtil.writeStringParcelableMap(dest, customData)
-        MemoryUtil.writeStringParcelableMap(dest, flags, fields)
-        // TODO MemoryUtil.writeStringParcelableMap(dest, flags, binaries);
+        ParcelableUtil.writeStringParcelableMap(dest, customData)
+        ParcelableUtil.writeStringParcelableMap(dest, flags, fields)
+        ParcelableUtil.writeStringParcelableMap(dest, flags, binaries)
         dest.writeString(foregroundColor)
         dest.writeString(backgroundColor)
         dest.writeString(overrideURL)
@@ -131,11 +141,11 @@ class PwEntryV4 : PwEntry<UUID, UUID, PwGroupV4, PwEntryV4>, PwNodeV4Interface {
      * Update with deep copy of each entry element
      * @param source
      */
-    fun updateWith(source: PwEntryV4, copyHistory: Boolean = true) {
+    fun updateWith(source: EntryKDBX, copyHistory: Boolean = true) {
         super.updateWith(source)
-        iconCustom = PwIconCustom(source.iconCustom)
+        iconCustom = IconImageCustom(source.iconCustom)
         usageCount = source.usageCount
-        locationChanged = PwDate(source.locationChanged)
+        locationChanged = DateInstant(source.locationChanged)
         // Add all custom elements in map
         customData.clear()
         customData.putAll(source.customData)
@@ -155,7 +165,7 @@ class PwEntryV4 : PwEntry<UUID, UUID, PwGroupV4, PwEntryV4>, PwNodeV4Interface {
         tags = source.tags
     }
 
-    fun startToManageFieldReferences(db: PwDatabaseV4) {
+    fun startToManageFieldReferences(db: DatabaseKDBX) {
         this.mDatabase = db
         this.mDecodeRef = true
     }
@@ -165,24 +175,24 @@ class PwEntryV4 : PwEntry<UUID, UUID, PwGroupV4, PwEntryV4>, PwNodeV4Interface {
         this.mDecodeRef = false
     }
 
-    override fun initNodeId(): PwNodeId<UUID> {
-        return PwNodeIdUUID()
+    override fun initNodeId(): NodeId<UUID> {
+        return NodeIdUUID()
     }
 
-    override fun copyNodeId(nodeId: PwNodeId<UUID>): PwNodeId<UUID> {
-        return PwNodeIdUUID(nodeId.id)
+    override fun copyNodeId(nodeId: NodeId<UUID>): NodeId<UUID> {
+        return NodeIdUUID(nodeId.id)
     }
 
-    override fun readParentParcelable(parcel: Parcel): PwGroupV4? {
-        return parcel.readParcelable(PwGroupV4::class.java.classLoader)
+    override fun readParentParcelable(parcel: Parcel): GroupKDBX? {
+        return parcel.readParcelable(GroupKDBX::class.java.classLoader)
     }
 
-    override fun writeParentParcelable(parent: PwGroupV4?, parcel: Parcel, flags: Int) {
+    override fun writeParentParcelable(parent: GroupKDBX?, parcel: Parcel, flags: Int) {
         parcel.writeParcelable(parent, flags)
     }
 
     /**
-     * Decode a reference key with the SprEngineV4
+     * Decode a reference key with the FieldReferencesEngine
      * @param decodeRef
      * @param key
      * @return
@@ -190,7 +200,7 @@ class PwEntryV4 : PwEntry<UUID, UUID, PwGroupV4, PwEntryV4>, PwNodeV4Interface {
     private fun decodeRefKey(decodeRef: Boolean, key: String): String {
         return fields[key]?.toString()?.let { text ->
             return if (decodeRef) {
-                if (mDatabase == null) text else SprEngineV4().compile(text, this, mDatabase!!)
+                if (mDatabase == null) text else FieldReferencesEngine().compile(text, this, mDatabase!!)
             } else text
         } ?: ""
     }
@@ -235,10 +245,10 @@ class PwEntryV4 : PwEntry<UUID, UUID, PwGroupV4, PwEntryV4>, PwNodeV4Interface {
 
     override var usageCount: Long = 0
 
-    override var locationChanged = PwDate()
+    override var locationChanged = DateInstant()
 
     fun afterChangeParent() {
-        locationChanged = PwDate()
+        locationChanged = DateInstant()
     }
 
     private fun isStandardField(key: String): Boolean {
@@ -274,7 +284,7 @@ class PwEntryV4 : PwEntry<UUID, UUID, PwGroupV4, PwEntryV4>, PwNodeV4Interface {
         fields[label] = value
     }
 
-    fun putProtectedBinary(key: String, value: ProtectedBinary) {
+    fun putProtectedBinary(key: String, value: BinaryAttachment) {
         binaries[key] = value
     }
 
@@ -290,10 +300,14 @@ class PwEntryV4 : PwEntry<UUID, UUID, PwGroupV4, PwEntryV4>, PwNodeV4Interface {
         return customData.isNotEmpty()
     }
 
-    fun addEntryToHistory(entry: PwEntryV4) {
+    fun addEntryToHistory(entry: EntryKDBX) {
         history.add(entry)
     }
 
+    fun removeEntryFromHistory(position: Int) {
+        history.removeAt(position)
+    }
+
     fun removeAllHistory() {
         history.clear()
     }
@@ -330,12 +344,12 @@ class PwEntryV4 : PwEntry<UUID, UUID, PwGroupV4, PwEntryV4>, PwNodeV4Interface {
         const val STR_NOTES = "Notes"
 
         @JvmField
-        val CREATOR: Parcelable.Creator<PwEntryV4> = object : Parcelable.Creator<PwEntryV4> {
-            override fun createFromParcel(parcel: Parcel): PwEntryV4 {
-                return PwEntryV4(parcel)
+        val CREATOR: Parcelable.Creator<EntryKDBX> = object : Parcelable.Creator<EntryKDBX> {
+            override fun createFromParcel(parcel: Parcel): EntryKDBX {
+                return EntryKDBX(parcel)
             }
 
-            override fun newArray(size: Int): Array<PwEntryV4?> {
+            override fun newArray(size: Int): Array<EntryKDBX?> {
                 return arrayOfNulls(size)
             }
         }

app/src/main/java/com/kunzisoft/keepass/database/element/entry/EntryVersioned.kt

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.database.element.entry
+
+import android.os.Parcel
+import com.kunzisoft.keepass.database.element.group.GroupVersioned
+import com.kunzisoft.keepass.database.element.node.NodeVersioned
+
+abstract class EntryVersioned
+        <
+        GroupId,
+        EntryId,
+        ParentGroup: GroupVersioned<GroupId, EntryId, ParentGroup, Entry>,
+        Entry: EntryVersioned<GroupId, EntryId, ParentGroup, Entry>
+        >
+    : NodeVersioned<EntryId, ParentGroup, Entry>, EntryVersionedInterface<ParentGroup> {
+
+    constructor() : super()
+
+    constructor(parcel: Parcel) : super(parcel)
+
+}

app/src/main/java/com/kunzisoft/keepass/database/element/entry/EntryVersionedInterface.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019 Jeremy Jamet / Kunzisoft.
+ *
+ * This file is part of KeePassDX.
+ *
+ *  KeePassDX is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  KeePassDX is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package com.kunzisoft.keepass.database.element.entry
+
+import com.kunzisoft.keepass.database.element.node.NodeVersionedInterface
+
+interface EntryVersionedInterface<ParentGroup> : NodeVersionedInterface<ParentGroup> {
+
+    var username: String
+
+    var password: String
+
+    var url: String
+
+    var notes: String
+}

app/src/main/java/com/kunzisoft/keepass/database/element/entry/FieldReferencesEngine.kt

@@ -17,24 +17,26 @@
  *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-package com.kunzisoft.keepass.database.element
+package com.kunzisoft.keepass.database.element.entry
 
-import com.kunzisoft.keepass.database.search.EntrySearchHandlerV4
-import com.kunzisoft.keepass.database.search.SearchParametersV4
+import com.kunzisoft.keepass.database.element.database.DatabaseKDBX
+import com.kunzisoft.keepass.database.element.group.GroupKDBX
+import com.kunzisoft.keepass.database.search.EntryKDBXSearchHandler
+import com.kunzisoft.keepass.database.search.SearchParametersKDBX
 import com.kunzisoft.keepass.utils.StringUtil
 import java.util.*
 
-class SprEngineV4 {
+class FieldReferencesEngine {
 
-    inner class TargetResult(var entry: PwEntryV4?, var wanted: Char)
+    inner class TargetResult(var entry: EntryKDBX?, var wanted: Char)
 
     private inner class SprContextV4 {
 
-        var databaseV4: PwDatabaseV4? = null
-        var entry: PwEntryV4
+        var databaseV4: DatabaseKDBX? = null
+        var entry: EntryKDBX
         var refsCache: MutableMap<String, String> = HashMap()
 
-        internal constructor(db: PwDatabaseV4, entry: PwEntryV4) {
+        internal constructor(db: DatabaseKDBX, entry: EntryKDBX) {
             this.databaseV4 = db
             this.entry = entry
         }
@@ -46,7 +48,7 @@ class SprEngineV4 {
         }
     }
 
-    fun compile(text: String, entry: PwEntryV4, database: PwDatabaseV4): String {
+    fun compile(text: String, entry: EntryKDBX, database: DatabaseKDBX): String {
         return compileInternal(text, SprContextV4(database, entry), 0)
     }
 
@@ -139,7 +141,7 @@ class SprEngineV4 {
         val scan = Character.toUpperCase(ref[2])
         val wanted = Character.toUpperCase(ref[0])
 
-        val searchParametersV4 = SearchParametersV4()
+        val searchParametersV4 = SearchParametersKDBX()
         searchParametersV4.setupNone()
 
         searchParametersV4.searchString = ref.substring(4)
@@ -161,7 +163,7 @@ class SprEngineV4 {
             return null
         }
 
-        val list = ArrayList<PwEntryV4>()
+        val list = ArrayList<EntryKDBX>()
         // TODO type parameter
         searchEntries(contextV4.databaseV4!!.rootGroup, searchParametersV4, list)
 
@@ -195,7 +197,7 @@ class SprEngineV4 {
         return newText
     }
 
-    private fun searchEntries(root: PwGroupV4?, searchParametersV4: SearchParametersV4?, listStorage: MutableList<PwEntryV4>?) {
+    private fun searchEntries(root: GroupKDBX?, searchParametersV4: SearchParametersKDBX?, listStorage: MutableList<EntryKDBX>?) {
         if (searchParametersV4 == null) {
             return
         }
@@ -205,7 +207,7 @@ class SprEngineV4 {
 
         val terms = StringUtil.splitStringTerms(searchParametersV4.searchString)
         if (terms.size <= 1 || searchParametersV4.regularExpression) {
-            root!!.doForEachChild(EntrySearchHandlerV4(searchParametersV4, listStorage), null)
+            root!!.doForEachChild(EntryKDBXSearchHandler(searchParametersV4, listStorage), null)
             return
         }
 
@@ -214,9 +216,9 @@ class SprEngineV4 {
         Collections.sort(terms, stringLengthComparator)
 
         val fullSearch = searchParametersV4.searchString
-        var childEntries: List<PwEntryV4>? = root!!.getChildEntries()
+        var childEntries: List<EntryKDBX>? = root!!.getChildEntries()
         for (i in terms.indices) {
-            val pgNew = ArrayList<PwEntryV4>()
+            val pgNew = ArrayList<EntryKDBX>()
 
             searchParametersV4.searchString = terms[i]
 
@@ -226,12 +228,12 @@ class SprEngineV4 {
                 negate = searchParametersV4.searchString.isNotEmpty()
             }
 
-            if (!root.doForEachChild(EntrySearchHandlerV4(searchParametersV4, pgNew), null)) {
+            if (!root.doForEachChild(EntryKDBXSearchHandler(searchParametersV4, pgNew), null)) {
                 childEntries = null
                 break
             }
 
-            val complement = ArrayList<PwEntryV4>()
+            val complement = ArrayList<EntryKDBX>()
             if (negate) {
                 for (entry in childEntries!!) {
                     if (!pgNew.contains(entry)) {