Start using ViewModel for internal database action

app/build.gradle

@@ -101,10 +101,9 @@ dependencies {
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     implementation 'androidx.documentfile:documentfile:1.0.1'
     implementation 'androidx.biometric:biometric:1.0.1'
-    implementation 'androidx.core:core-ktx:1.2.0'
-    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.3'
-    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.3'
-    // TODO #538 implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.2.0"
+    // Lifecycle - LiveData - ViewModel - Coroutines
+    implementation "androidx.core:core-ktx:1.2.0"
+    implementation 'androidx.fragment:fragment-ktx:1.2.4'
     // To upgrade with style
     implementation 'com.google.android.material:material:1.0.0'
     // Database

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

@@ -32,9 +32,11 @@ import android.util.Log
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
+import androidx.activity.viewModels
 import androidx.annotation.RequiresApi
 import androidx.appcompat.widget.Toolbar
 import androidx.coordinatorlayout.widget.CoordinatorLayout
+import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import androidx.recyclerview.widget.SimpleItemAnimator
@@ -56,6 +58,7 @@ import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Compa
 import com.kunzisoft.keepass.settings.PreferencesUtil
 import com.kunzisoft.keepass.utils.*
 import com.kunzisoft.keepass.view.asError
+import com.kunzisoft.keepass.viewmodels.DatabaseFilesViewModel
 import kotlinx.android.synthetic.main.activity_file_selection.*
 import java.io.FileNotFoundException
 
@@ -68,6 +71,8 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
     private var createDatabaseButtonView: View? = null
     private var openDatabaseButtonView: View? = null
 
+    private val databaseFilesViewModel: DatabaseFilesViewModel by viewModels()
+
     // Adapter to manage database history list
     private var mAdapterDatabaseHistory: FileDatabaseHistoryAdapter? = null
 
@@ -118,25 +123,21 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
         // Construct adapter with listeners
         mAdapterDatabaseHistory = FileDatabaseHistoryAdapter(this)
         mAdapterDatabaseHistory?.setOnFileDatabaseHistoryOpenListener { fileDatabaseHistoryEntityToOpen ->
-            UriUtil.parse(fileDatabaseHistoryEntityToOpen.databaseUri)?.let { databaseFileUri ->
+            fileDatabaseHistoryEntityToOpen.databaseUri?.let { databaseFileUri ->
                 launchPasswordActivity(
                         databaseFileUri,
-                        UriUtil.parse(fileDatabaseHistoryEntityToOpen.keyFileUri))
+                        fileDatabaseHistoryEntityToOpen.keyFileUri
+                )
             }
         }
         mAdapterDatabaseHistory?.setOnFileDatabaseHistoryDeleteListener { fileDatabaseHistoryToDelete ->
             // Remove from app database
-            mFileDatabaseHistoryAction?.deleteFileDatabaseHistory(fileDatabaseHistoryToDelete) { fileHistoryDeleted ->
-                // Remove from adapter
-                fileHistoryDeleted?.let { databaseFileHistoryDeleted ->
-                    mAdapterDatabaseHistory?.deleteDatabaseFileHistory(databaseFileHistoryDeleted)
-                    mAdapterDatabaseHistory?.notifyDataSetChanged()
-                }
-            }
+            databaseFilesViewModel.deleteDatabaseFile(fileDatabaseHistoryToDelete)
             true
         }
         mAdapterDatabaseHistory?.setOnSaveAliasListener { fileDatabaseHistoryWithNewAlias ->
-            mFileDatabaseHistoryAction?.addOrUpdateFileDatabaseHistory(fileDatabaseHistoryWithNewAlias)
+            // Update in app database
+            databaseFilesViewModel.updateDatabaseFile(fileDatabaseHistoryWithNewAlias)
         }
         fileDatabaseHistoryRecyclerView.adapter = mAdapterDatabaseHistory
 
@@ -159,17 +160,49 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
             mDatabaseFileUri = savedInstanceState.getParcelable(EXTRA_DATABASE_URI)
         }
 
+        // Observe list of databases
+        databaseFilesViewModel.databaseFilesLoaded.observe(this, Observer { databaseFiles ->
+            when (databaseFiles.databaseFileAction) {
+                DatabaseFilesViewModel.DatabaseFileAction.NONE -> {
+                    mAdapterDatabaseHistory?.replaceAllDatabaseFileHistoryList(databaseFiles.databaseFileList)
+                    mAdapterDatabaseHistory?.notifyDataSetChanged()
+                }
+                DatabaseFilesViewModel.DatabaseFileAction.ADD -> {
+                    databaseFiles.databaseFileToActivate?.let { databaseFileToAdd ->
+                        mAdapterDatabaseHistory?.notifyDataSetChanged()
+                    }
+                }
+                DatabaseFilesViewModel.DatabaseFileAction.UPDATE -> {
+                    databaseFiles.databaseFileToActivate?.let { databaseFileToUpdate ->
+                        mAdapterDatabaseHistory?.notifyDataSetChanged()
+                    }
+                }
+                DatabaseFilesViewModel.DatabaseFileAction.DELETE -> {
+                    databaseFiles.databaseFileToActivate?.let { databaseFileToDelete ->
+                        mAdapterDatabaseHistory?.deleteDatabaseFileHistory(databaseFileToDelete)
+                        mAdapterDatabaseHistory?.notifyDataSetChanged()
+                    }
+                }
+            }
+            databaseFilesViewModel.consumeAction()
+        })
+
         // Attach the dialog thread to this activity
         mProgressDialogThread = ProgressDialogThread(this).apply {
             onActionFinish = { actionTask, _ ->
                 when (actionTask) {
                     ACTION_DATABASE_CREATE_TASK -> {
+                        // TODO add Database file
+                        // databaseFilesViewModel.addDatabaseFile()
+                        databaseFilesViewModel.loadListOfDatabases()
+                        runOnUiThread {
                             GroupActivity.launch(this@FileDatabaseSelectActivity)
                         }
                     }
                 }
             }
         }
+    }
 
     /**
      * Create a new file by calling the content provider
@@ -286,21 +319,7 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
         } else {
             // Construct adapter with listeners
             if (PreferencesUtil.showRecentFiles(this)) {
-                mFileDatabaseHistoryAction?.getAllFileDatabaseHistories { databaseFileHistoryList ->
-                    databaseFileHistoryList?.let { historyList ->
-                        val hideBrokenLocations = PreferencesUtil.hideBrokenLocations(this@FileDatabaseSelectActivity)
-                        mAdapterDatabaseHistory?.addDatabaseFileHistoryList(
-                                // Show only uri accessible
-                                historyList.filter {
-                                    if (hideBrokenLocations) {
-                                        FileDatabaseInfo(this@FileDatabaseSelectActivity,
-                                                it.databaseUri).exists
-                                    } else
-                                        true
-                                })
-                        mAdapterDatabaseHistory?.notifyDataSetChanged()
-                    }
-                }
+                databaseFilesViewModel.loadListOfDatabases()
             } else {
                 mAdapterDatabaseHistory?.clearDatabaseFileHistoryList()
                 mAdapterDatabaseHistory?.notifyDataSetChanged()
@@ -362,8 +381,7 @@ class FileDatabaseSelectActivity : SpecialModeActivity(),
             AutofillHelper.onActivityResultSetResultAndFinish(this, requestCode, resultCode, data)
         }
 
-        mOpenFileHelper?.onActivityResultCallback(requestCode, resultCode, data
-        ) { uri ->
+        mOpenFileHelper?.onActivityResultCallback(requestCode, resultCode, data) { uri ->
             if (uri != null) {
                 launchPasswordActivityWithPath(uri)
             }

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

@@ -34,10 +34,12 @@ import android.util.Log
 import android.view.*
 import android.view.inputmethod.EditorInfo.IME_ACTION_DONE
 import android.widget.*
+import androidx.activity.viewModels
 import androidx.annotation.RequiresApi
 import androidx.appcompat.widget.Toolbar
 import androidx.biometric.BiometricManager
 import androidx.core.app.ActivityCompat
+import androidx.lifecycle.Observer
 import com.google.android.material.snackbar.Snackbar
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.dialogs.DuplicateUuidDialog
@@ -48,7 +50,6 @@ import com.kunzisoft.keepass.activities.helpers.ReadOnlyHelper
 import com.kunzisoft.keepass.activities.lock.LockingActivity
 import com.kunzisoft.keepass.activities.selection.SpecialModeActivity
 import com.kunzisoft.keepass.app.database.CipherDatabaseEntity
-import com.kunzisoft.keepass.app.database.FileDatabaseHistoryAction
 import com.kunzisoft.keepass.autofill.AutofillHelper
 import com.kunzisoft.keepass.biometric.AdvancedUnlockedManager
 import com.kunzisoft.keepass.database.action.ProgressDialogThread
@@ -60,7 +61,7 @@ import com.kunzisoft.keepass.model.SearchInfo
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.ACTION_DATABASE_LOAD_TASK
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.CIPHER_ENTITY_KEY
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.DATABASE_URI_KEY
-import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.KEY_FILE_KEY
+import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.KEY_FILE_URI_KEY
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.MASTER_PASSWORD_KEY
 import com.kunzisoft.keepass.notifications.DatabaseTaskNotificationService.Companion.READ_ONLY_KEY
 import com.kunzisoft.keepass.settings.PreferencesUtil
@@ -68,6 +69,7 @@ import com.kunzisoft.keepass.utils.*
 import com.kunzisoft.keepass.view.AdvancedUnlockInfoView
 import com.kunzisoft.keepass.view.KeyFileSelectionView
 import com.kunzisoft.keepass.view.asError
+import com.kunzisoft.keepass.viewmodels.DatabaseFileViewModel
 import kotlinx.android.synthetic.main.activity_password.*
 import java.io.FileNotFoundException
 
@@ -86,6 +88,8 @@ open class PasswordActivity : SpecialModeActivity() {
     private var infoContainerView: ViewGroup? = null
     private var enableButtonOnCheckedChangeListener: CompoundButton.OnCheckedChangeListener? = null
 
+    private val databaseFilesViewModel: DatabaseFileViewModel by viewModels()
+
     private var mDatabaseFileUri: Uri? = null
     private var mDatabaseKeyFileUri: Uri? = null
 
@@ -133,6 +137,7 @@ open class PasswordActivity : SpecialModeActivity() {
 
         mPermissionAsked = savedInstanceState?.getBoolean(KEY_PERMISSION_ASKED) ?: mPermissionAsked
         readOnly = ReadOnlyHelper.retrieveReadOnlyFromInstanceStateOrPreference(this, savedInstanceState)
+        mRememberKeyFile = PreferencesUtil.rememberKeyFileLocations(this)
 
         mOpenFileHelper = OpenFileHelper(this@PasswordActivity)
         keyFileSelectionView?.apply {
@@ -163,11 +168,33 @@ open class PasswordActivity : SpecialModeActivity() {
         if (savedInstanceState?.containsKey(KEY_KEYFILE) == true) {
             mDatabaseKeyFileUri = UriUtil.parse(savedInstanceState.getString(KEY_KEYFILE))
         }
-
         if (savedInstanceState?.containsKey(ALLOW_AUTO_OPEN_BIOMETRIC_PROMPT) == true) {
             mAllowAutoOpenBiometricPrompt = savedInstanceState.getBoolean(ALLOW_AUTO_OPEN_BIOMETRIC_PROMPT)
         }
 
+        // Observe database file change
+        databaseFilesViewModel.databaseFileLoaded.observe(this, Observer { databaseFile ->
+            // Force read only if the file does not exists
+            mForceReadOnly = databaseFile?.let {
+                !it.databaseFileExists
+            } ?: true
+            invalidateOptionsMenu()
+
+            // Post init uri with KeyFile only if needed
+            val keyFileUri =
+                    if (mRememberKeyFile
+                            && (mDatabaseKeyFileUri == null || mDatabaseKeyFileUri.toString().isEmpty())) {
+                        databaseFile?.keyFileUri
+                    } else {
+                        mDatabaseKeyFileUri
+                    }
+
+            // Define title
+            filenameView?.text = databaseFile?.databaseAlias ?: ""
+
+            onDatabaseFileLoaded(databaseFile?.databaseUri, keyFileUri)
+        })
+
         mProgressDialogThread = ProgressDialogThread(this).apply {
             onActionFinish = { actionTask, result ->
                 when (actionTask) {
@@ -205,7 +232,7 @@ open class PasswordActivity : SpecialModeActivity() {
                                         result.data?.let { resultData ->
                                             databaseUri = resultData.getParcelable(DATABASE_URI_KEY)
                                             masterPassword = resultData.getString(MASTER_PASSWORD_KEY)
-                                            keyFileUri = resultData.getParcelable(KEY_FILE_KEY)
+                                            keyFileUri = resultData.getParcelable(KEY_FILE_URI_KEY)
                                             readOnly = resultData.getBoolean(READ_ONLY_KEY)
                                             cipherEntity = resultData.getParcelable(CIPHER_ENTITY_KEY)
                                         }
@@ -364,45 +391,15 @@ open class PasswordActivity : SpecialModeActivity() {
             else
                 mAllowAutoOpenBiometricPrompt
 
-            initUriFromIntent()
+            mDatabaseFileUri?.let { databaseFileUri ->
+                databaseFilesViewModel.loadDatabaseFile(databaseFileUri)
+            }
 
             checkPermission()
         }
     }
 
-    private fun initUriFromIntent() {
-        /*
-        // "canXrite" doesn't work with Google Drive, don't really know why?
-        mForceReadOnly = mDatabaseFileUri?.let {
-            !FileDatabaseInfo(this, it).canWrite
-        } ?: false
-        */
-        mForceReadOnly = mDatabaseFileUri?.let {
-            !FileDatabaseInfo(this, it).exists
-        } ?: true
-
-        // Post init uri with KeyFile if needed
-        if (mRememberKeyFile && (mDatabaseKeyFileUri == null || mDatabaseKeyFileUri.toString().isEmpty())) {
-            // Retrieve KeyFile in a thread
-            mDatabaseFileUri?.let { databaseUri ->
-                FileDatabaseHistoryAction.getInstance(applicationContext)
-                        .getKeyFileUriByDatabaseUri(databaseUri)  {
-                            onPostInitUri(databaseUri, it)
-                        }
-            }
-        } else {
-            onPostInitUri(mDatabaseFileUri, mDatabaseKeyFileUri)
-        }
-    }
-
-    private fun onPostInitUri(databaseFileUri: Uri?, keyFileUri: Uri?) {
-        // Define title
-        databaseFileUri?.let {
-            FileDatabaseInfo(this, it).retrieveDatabaseTitle { title ->
-                filenameView?.text = title
-            }
-        }
-
+    private fun onDatabaseFileLoaded(databaseFileUri: Uri?, keyFileUri: Uri?) {
         // Define Key File text
         if (mRememberKeyFile) {
             populateKeyFileTextView(keyFileUri)

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

@@ -31,19 +31,17 @@ import android.widget.ImageView
 import android.widget.TextView
 import android.widget.ViewSwitcher
 import com.kunzisoft.keepass.R
-import com.kunzisoft.keepass.app.database.FileDatabaseHistoryEntity
-import com.kunzisoft.keepass.utils.FileDatabaseInfo
-import com.kunzisoft.keepass.utils.UriUtil
+import com.kunzisoft.keepass.model.DatabaseFile
 
-class FileDatabaseHistoryAdapter(private val context: Context)
+class FileDatabaseHistoryAdapter(context: Context)
     : RecyclerView.Adapter<FileDatabaseHistoryAdapter.FileDatabaseHistoryViewHolder>() {
 
     private val inflater: LayoutInflater = LayoutInflater.from(context)
-    private var fileItemOpenListener: ((FileDatabaseHistoryEntity)->Unit)? = null
-    private var fileSelectClearListener: ((FileDatabaseHistoryEntity)->Boolean)? = null
-    private var saveAliasListener: ((FileDatabaseHistoryEntity)->Unit)? = null
+    private var fileItemOpenListener: ((DatabaseFile)->Unit)? = null
+    private var fileSelectClearListener: ((DatabaseFile)->Boolean)? = null
+    private var saveAliasListener: ((DatabaseFile)->Unit)? = null
 
-    private val listDatabaseFiles = ArrayList<FileDatabaseHistoryEntity>()
+    private val listDatabaseFiles = ArrayList<DatabaseFile>()
 
     private var mExpandedPosition = -1
     private var mPreviousExpandedPosition = -1
@@ -69,29 +67,28 @@ class FileDatabaseHistoryAdapter(private val context: Context)
 
     override fun onBindViewHolder(holder: FileDatabaseHistoryViewHolder, position: Int) {
         // Get info from position
-        val fileHistoryEntity = listDatabaseFiles[position]
-        val fileDatabaseInfo = FileDatabaseInfo(context, fileHistoryEntity.databaseUri)
+        val databaseFile = listDatabaseFiles[position]
 
         // Click item to open file
         if (fileItemOpenListener != null)
             holder.fileContainer.setOnClickListener {
-                fileItemOpenListener?.invoke(fileHistoryEntity)
+                fileItemOpenListener?.invoke(databaseFile)
             }
 
         // File alias
-        holder.fileAlias.text = fileDatabaseInfo.retrieveDatabaseAlias(fileHistoryEntity.databaseAlias)
+        holder.fileAlias.text = databaseFile.databaseAlias
 
         // File path
-        holder.filePath.text = UriUtil.decode(fileDatabaseInfo.fileUri?.toString())
+        holder.filePath.text = databaseFile.databaseDecodedPath
 
-        if (fileDatabaseInfo.exists) {
+        if (databaseFile.databaseFileExists) {
             holder.fileInformation.clearColorFilter()
         } else {
             holder.fileInformation.setColorFilter(Color.RED, PorterDuff.Mode.MULTIPLY)
         }
 
         // Modification
-        fileDatabaseInfo.getModificationString()?.let {
+        databaseFile.databaseLastModified?.let {
             holder.fileModification.text = it
             holder.fileModification.visibility = View.VISIBLE
         } ?: run {
@@ -99,7 +96,7 @@ class FileDatabaseHistoryAdapter(private val context: Context)
         }
 
         // Size
-        fileDatabaseInfo.getSizeString()?.let {
+        databaseFile.databaseSize?.let {
             holder.fileSize.text = it
             holder.fileSize.visibility = View.VISIBLE
         } ?: run {
@@ -114,8 +111,8 @@ class FileDatabaseHistoryAdapter(private val context: Context)
         // Save alias modification
         holder.fileAliasCloseButton.setOnClickListener {
             // Change the alias
-            fileHistoryEntity.databaseAlias = holder.fileAliasEdit.text.toString()
-            saveAliasListener?.invoke(fileHistoryEntity)
+            databaseFile.databaseAlias = holder.fileAliasEdit.text.toString()
+            saveAliasListener?.invoke(databaseFile)
 
             // Finish save mode
             holder.fileMainSwitcher.showPrevious()
@@ -130,7 +127,7 @@ class FileDatabaseHistoryAdapter(private val context: Context)
         }
 
         holder.fileDeleteButton.setOnClickListener {
-            fileSelectClearListener?.invoke(fileHistoryEntity)
+            fileSelectClearListener?.invoke(databaseFile)
         }
 
         if (isExpanded) {
@@ -160,24 +157,24 @@ class FileDatabaseHistoryAdapter(private val context: Context)
         listDatabaseFiles.clear()
     }
 
-    fun addDatabaseFileHistoryList(listFileDatabaseHistoryToAdd: List<FileDatabaseHistoryEntity>) {
+    fun replaceAllDatabaseFileHistoryList(listFileDatabaseHistoryToAdd: List<DatabaseFile>) {
         listDatabaseFiles.clear()
         listDatabaseFiles.addAll(listFileDatabaseHistoryToAdd)
     }
 
-    fun deleteDatabaseFileHistory(fileDatabaseHistoryToDelete: FileDatabaseHistoryEntity) {
+    fun deleteDatabaseFileHistory(fileDatabaseHistoryToDelete: DatabaseFile) {
         listDatabaseFiles.remove(fileDatabaseHistoryToDelete)
     }
 
-    fun setOnFileDatabaseHistoryOpenListener(listener : ((FileDatabaseHistoryEntity)->Unit)?) {
+    fun setOnFileDatabaseHistoryOpenListener(listener : ((DatabaseFile)->Unit)?) {
         this.fileItemOpenListener = listener
     }
 
-    fun setOnFileDatabaseHistoryDeleteListener(listener : ((FileDatabaseHistoryEntity)->Boolean)?) {
+    fun setOnFileDatabaseHistoryDeleteListener(listener : ((DatabaseFile)->Boolean)?) {
         this.fileSelectClearListener = listener
     }
 
-    fun setOnSaveAliasListener(listener : ((FileDatabaseHistoryEntity)->Unit)?) {
+    fun setOnSaveAliasListener(listener : ((DatabaseFile)->Unit)?) {
         this.saveAliasListener = listener
     }
 

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

@@ -71,6 +71,7 @@ class FileDatabaseHistoryAction(applicationContext: Context) {
     }
 
     fun addOrUpdateDatabaseUri(databaseUri: Uri, keyFileUri: Uri? = null) {
+        // TODO in Thread
         addOrUpdateFileDatabaseHistory(FileDatabaseHistoryEntity(
                 databaseUri.toString(),
                 "",
@@ -79,7 +80,9 @@ class FileDatabaseHistoryAction(applicationContext: Context) {
         ), true)
     }
 
-    fun addOrUpdateFileDatabaseHistory(fileDatabaseHistory: FileDatabaseHistoryEntity, unmodifiedAlias: Boolean = false) {
+    fun addOrUpdateFileDatabaseHistory(fileDatabaseHistory: FileDatabaseHistoryEntity,
+                                       unmodifiedAlias: Boolean = false,
+                                       fileHistoryUpdatedResult: ((FileDatabaseHistoryEntity?) -> Unit)? = null) {
         IOActionTask(
                 {
                     val fileDatabaseHistoryRetrieve = databaseFileHistoryDao.getByDatabaseUri(fileDatabaseHistory.databaseUri)
@@ -93,6 +96,10 @@ class FileDatabaseHistoryAction(applicationContext: Context) {
                     } else {
                         databaseFileHistoryDao.update(fileDatabaseHistory)
                     }
+                    fileDatabaseHistoryRetrieve
+                },
+                {
+                    fileHistoryUpdatedResult?.invoke(it)
                 }
         ).execute()
     }

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

@@ -57,6 +57,7 @@ class CreateDatabaseRunnable(context: Context,
         super.onFinishRun()
 
         if (result.isSuccess) {
+            // TODO in Thread
             // Add database to recent files
             if (PreferencesUtil.rememberDatabaseLocations(context)) {
                 FileDatabaseHistoryAction.getInstance(context.applicationContext)

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

@@ -241,7 +241,7 @@ class ProgressDialogThread(private val activity: FragmentActivity) {
             putBoolean(DatabaseTaskNotificationService.MASTER_PASSWORD_CHECKED_KEY, masterPasswordChecked)
             putString(DatabaseTaskNotificationService.MASTER_PASSWORD_KEY, masterPassword)
             putBoolean(DatabaseTaskNotificationService.KEY_FILE_CHECKED_KEY, keyFileChecked)
-            putParcelable(DatabaseTaskNotificationService.KEY_FILE_KEY, keyFile)
+            putParcelable(DatabaseTaskNotificationService.KEY_FILE_URI_KEY, keyFile)
         }
                 , ACTION_DATABASE_CREATE_TASK)
     }
@@ -255,7 +255,7 @@ class ProgressDialogThread(private val activity: FragmentActivity) {
         start(Bundle().apply {
             putParcelable(DatabaseTaskNotificationService.DATABASE_URI_KEY, databaseUri)
             putString(DatabaseTaskNotificationService.MASTER_PASSWORD_KEY, masterPassword)
-            putParcelable(DatabaseTaskNotificationService.KEY_FILE_KEY, keyFile)
+            putParcelable(DatabaseTaskNotificationService.KEY_FILE_URI_KEY, keyFile)
             putBoolean(DatabaseTaskNotificationService.READ_ONLY_KEY, readOnly)
             putParcelable(DatabaseTaskNotificationService.CIPHER_ENTITY_KEY, cipherEntity)
             putBoolean(DatabaseTaskNotificationService.FIX_DUPLICATE_UUID_KEY, fixDuplicateUuid)
@@ -274,7 +274,7 @@ class ProgressDialogThread(private val activity: FragmentActivity) {
             putBoolean(DatabaseTaskNotificationService.MASTER_PASSWORD_CHECKED_KEY, masterPasswordChecked)
             putString(DatabaseTaskNotificationService.MASTER_PASSWORD_KEY, masterPassword)
             putBoolean(DatabaseTaskNotificationService.KEY_FILE_CHECKED_KEY, keyFileChecked)
-            putParcelable(DatabaseTaskNotificationService.KEY_FILE_KEY, keyFile)
+            putParcelable(DatabaseTaskNotificationService.KEY_FILE_URI_KEY, keyFile)
         }
                 , ACTION_DATABASE_ASSIGN_PASSWORD_TASK)
     }

app/src/main/java/com/kunzisoft/keepass/model/DatabaseFile.kt

@@ -0,0 +1,26 @@
+package com.kunzisoft.keepass.model
+
+import android.net.Uri
+
+data class DatabaseFile(var databaseUri: Uri? = null,
+                        var keyFileUri: Uri? = null,
+                        var databaseDecodedPath: String? = null,
+                        var databaseAlias: String? = null,
+                        var databaseFileExists: Boolean = false,
+                        var databaseLastModified: String? = null,
+                        var databaseSize: String? = null) {
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other !is DatabaseFile) return false
+
+        if (databaseUri == null) return false
+        if (databaseUri != other.databaseUri) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        return databaseUri?.hashCode() ?: 0
+    }
+}

app/src/main/java/com/kunzisoft/keepass/notifications/DatabaseTaskNotificationService.kt

@@ -295,7 +295,7 @@ open class DatabaseTaskNotificationService : LockNotificationService(), Progress
         intent?.removeExtra(MASTER_PASSWORD_CHECKED_KEY)
         intent?.removeExtra(MASTER_PASSWORD_KEY)
         intent?.removeExtra(KEY_FILE_CHECKED_KEY)
-        intent?.removeExtra(KEY_FILE_KEY)
+        intent?.removeExtra(KEY_FILE_URI_KEY)
         intent?.removeExtra(READ_ONLY_KEY)
         intent?.removeExtra(CIPHER_ENTITY_KEY)
         intent?.removeExtra(FIX_DUPLICATE_UUID_KEY)
@@ -380,10 +380,10 @@ open class DatabaseTaskNotificationService : LockNotificationService(), Progress
                 && intent.hasExtra(MASTER_PASSWORD_CHECKED_KEY)
                 && intent.hasExtra(MASTER_PASSWORD_KEY)
                 && intent.hasExtra(KEY_FILE_CHECKED_KEY)
-                && intent.hasExtra(KEY_FILE_KEY)
+                && intent.hasExtra(KEY_FILE_URI_KEY)
         ) {
             val databaseUri: Uri? = intent.getParcelableExtra(DATABASE_URI_KEY)
-            val keyFileUri: Uri? = intent.getParcelableExtra(KEY_FILE_KEY)
+            val keyFileUri: Uri? = intent.getParcelableExtra(KEY_FILE_URI_KEY)
 
             if (databaseUri == null)
                 return null
@@ -407,14 +407,14 @@ open class DatabaseTaskNotificationService : LockNotificationService(), Progress
 
         if (intent.hasExtra(DATABASE_URI_KEY)
                 && intent.hasExtra(MASTER_PASSWORD_KEY)
-                && intent.hasExtra(KEY_FILE_KEY)
+                && intent.hasExtra(KEY_FILE_URI_KEY)
                 && intent.hasExtra(READ_ONLY_KEY)
                 && intent.hasExtra(CIPHER_ENTITY_KEY)
                 && intent.hasExtra(FIX_DUPLICATE_UUID_KEY)
         ) {
             val databaseUri: Uri? = intent.getParcelableExtra(DATABASE_URI_KEY)
             val masterPassword: String? = intent.getStringExtra(MASTER_PASSWORD_KEY)
-            val keyFileUri: Uri? = intent.getParcelableExtra(KEY_FILE_KEY)
+            val keyFileUri: Uri? = intent.getParcelableExtra(KEY_FILE_URI_KEY)
             val readOnly: Boolean = intent.getBooleanExtra(READ_ONLY_KEY, true)
             val cipherEntity: CipherDatabaseEntity? = intent.getParcelableExtra(CIPHER_ENTITY_KEY)
 
@@ -436,7 +436,7 @@ open class DatabaseTaskNotificationService : LockNotificationService(), Progress
                 result.data = Bundle().apply {
                     putParcelable(DATABASE_URI_KEY, databaseUri)
                     putString(MASTER_PASSWORD_KEY, masterPassword)
-                    putParcelable(KEY_FILE_KEY, keyFileUri)
+                    putParcelable(KEY_FILE_URI_KEY, keyFileUri)
                     putBoolean(READ_ONLY_KEY, readOnly)
                     putParcelable(CIPHER_ENTITY_KEY, cipherEntity)
                 }
@@ -451,7 +451,7 @@ open class DatabaseTaskNotificationService : LockNotificationService(), Progress
                 && intent.hasExtra(MASTER_PASSWORD_CHECKED_KEY)
                 && intent.hasExtra(MASTER_PASSWORD_KEY)
                 && intent.hasExtra(KEY_FILE_CHECKED_KEY)
-                && intent.hasExtra(KEY_FILE_KEY)
+                && intent.hasExtra(KEY_FILE_URI_KEY)
         ) {
             val databaseUri: Uri = intent.getParcelableExtra(DATABASE_URI_KEY) ?: return null
             AssignPasswordInDatabaseRunnable(this,
@@ -460,7 +460,7 @@ open class DatabaseTaskNotificationService : LockNotificationService(), Progress
                     intent.getBooleanExtra(MASTER_PASSWORD_CHECKED_KEY, false),
                     intent.getStringExtra(MASTER_PASSWORD_KEY),
                     intent.getBooleanExtra(KEY_FILE_CHECKED_KEY, false),
-                    intent.getParcelableExtra(KEY_FILE_KEY)
+                    intent.getParcelableExtra(KEY_FILE_URI_KEY)
             )
         } else {
             null
@@ -766,7 +766,7 @@ open class DatabaseTaskNotificationService : LockNotificationService(), Progress
         const val MASTER_PASSWORD_CHECKED_KEY = "MASTER_PASSWORD_CHECKED_KEY"
         const val MASTER_PASSWORD_KEY = "MASTER_PASSWORD_KEY"
         const val KEY_FILE_CHECKED_KEY = "KEY_FILE_CHECKED_KEY"
-        const val KEY_FILE_KEY = "KEY_FILE_KEY"
+        const val KEY_FILE_URI_KEY = "KEY_FILE_KEY"
         const val READ_ONLY_KEY = "READ_ONLY_KEY"
         const val CIPHER_ENTITY_KEY = "CIPHER_ENTITY_KEY"
         const val FIX_DUPLICATE_UUID_KEY = "FIX_DUPLICATE_UUID_KEY"

app/src/main/java/com/kunzisoft/keepass/viewmodels/DatabaseFileViewModel.kt

@@ -0,0 +1,49 @@
+package com.kunzisoft.keepass.viewmodels
+
+import android.app.Application
+import android.net.Uri
+import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.MutableLiveData
+import com.kunzisoft.keepass.app.App
+import com.kunzisoft.keepass.app.database.FileDatabaseHistoryAction
+import com.kunzisoft.keepass.app.database.IOActionTask
+import com.kunzisoft.keepass.model.DatabaseFile
+import com.kunzisoft.keepass.utils.UriUtil
+
+class DatabaseFileViewModel(application: Application) : AndroidViewModel(application) {
+
+    private var mFileDatabaseHistoryAction: FileDatabaseHistoryAction? = null
+
+    init {
+        mFileDatabaseHistoryAction = FileDatabaseHistoryAction.getInstance(application.applicationContext)
+    }
+
+    val databaseFileLoaded: MutableLiveData<DatabaseFile> by lazy {
+        MutableLiveData<DatabaseFile>()
+    }
+
+    fun loadDatabaseFile(databaseUri: Uri) {
+        mFileDatabaseHistoryAction?.getFileDatabaseHistory(databaseUri) { fileDatabaseHistoryEntity ->
+            IOActionTask (
+                    {
+                        val fileDatabaseInfo = FileDatabaseInfo(
+                                getApplication<App>().applicationContext,
+                                databaseUri
+                        )
+                        DatabaseFile(
+                                databaseUri,
+                                UriUtil.parse(fileDatabaseHistoryEntity?.keyFileUri),
+                                UriUtil.decode(fileDatabaseHistoryEntity?.databaseUri),
+                                fileDatabaseInfo.retrieveDatabaseAlias(fileDatabaseHistoryEntity?.databaseAlias ?: ""),
+                                fileDatabaseInfo.exists,
+                                fileDatabaseInfo.getModificationString(),
+                                fileDatabaseInfo.getSizeString()
+                        )
+                    },
+                    {
+                        databaseFileLoaded.value = it ?: DatabaseFile(databaseUri)
+                    }
+            ).execute()
+        }
+    }
+}

app/src/main/java/com/kunzisoft/keepass/viewmodels/DatabaseFilesViewModel.kt

@@ -0,0 +1,187 @@
+package com.kunzisoft.keepass.viewmodels
+
+import android.app.Application
+import androidx.lifecycle.*
+import com.kunzisoft.keepass.app.App
+import com.kunzisoft.keepass.app.database.FileDatabaseHistoryAction
+import com.kunzisoft.keepass.app.database.IOActionTask
+import com.kunzisoft.keepass.model.DatabaseFile
+import com.kunzisoft.keepass.settings.PreferencesUtil
+import com.kunzisoft.keepass.utils.UriUtil
+
+class DatabaseFilesViewModel(application: Application) : AndroidViewModel(application) {
+
+    private var mFileDatabaseHistoryAction: FileDatabaseHistoryAction? = null
+
+    init {
+        mFileDatabaseHistoryAction = FileDatabaseHistoryAction.getInstance(application.applicationContext)
+    }
+
+    val databaseFilesLoaded: MutableLiveData<DatabaseFileData> by lazy {
+        MutableLiveData<DatabaseFileData>()
+    }
+
+    fun loadListOfDatabases() {
+        val databaseFileListLoaded = ArrayList<DatabaseFile>()
+
+        mFileDatabaseHistoryAction?.getAllFileDatabaseHistories { databaseFileHistoryList ->
+            databaseFileHistoryList?.let { historyList ->
+                IOActionTask({
+                    val context = getApplication<App>().applicationContext
+                    val hideBrokenLocations = PreferencesUtil.hideBrokenLocations(context)
+                    // Show only uri accessible
+                    historyList.forEach { fileDatabaseHistoryEntity ->
+                        val fileDatabaseInfo = FileDatabaseInfo(context, fileDatabaseHistoryEntity.databaseUri)
+                        if (hideBrokenLocations && fileDatabaseInfo.exists
+                                || !hideBrokenLocations) {
+                            databaseFileListLoaded.add(
+                                    DatabaseFile(
+                                            UriUtil.parse(fileDatabaseHistoryEntity.databaseUri),
+                                            UriUtil.parse(fileDatabaseHistoryEntity.keyFileUri),
+                                            UriUtil.decode(fileDatabaseHistoryEntity.databaseUri),
+                                            fileDatabaseInfo.retrieveDatabaseAlias(fileDatabaseHistoryEntity.databaseAlias),
+                                            fileDatabaseInfo.exists,
+                                            fileDatabaseInfo.getModificationString(),
+                                            fileDatabaseInfo.getSizeString()
+                                    )
+                            )
+                        }
+                    }
+                }, {
+                    var newValue = databaseFilesLoaded.value
+                    if (newValue == null) {
+                        newValue = DatabaseFileData()
+                    }
+                    newValue.apply {
+                        databaseFileAction = DatabaseFileAction.NONE
+                        databaseFileToActivate = null
+                        databaseFileList.apply {
+                            clear()
+                            addAll(databaseFileListLoaded)
+                        }
+                    }
+                    databaseFilesLoaded.value = newValue
+                }).execute()
+            }
+        }
+    }
+
+    fun addDatabaseFile(databaseFileToAdd: DatabaseFile) {
+        addOrUpdateDatabaseFile(databaseFileToAdd, DatabaseFileAction.ADD)
+    }
+
+    fun updateDatabaseFile(databaseFileToUpdate: DatabaseFile) {
+        addOrUpdateDatabaseFile(databaseFileToUpdate, DatabaseFileAction.UPDATE)
+    }
+
+    private fun addOrUpdateDatabaseFile(databaseFileToAddOrUpdate: DatabaseFile,
+                                        databaseFileAction: DatabaseFileAction) {
+
+        databaseFileToAddOrUpdate.databaseUri?.let { databaseUri ->
+            mFileDatabaseHistoryAction?.getFileDatabaseHistory(databaseUri) { fileDatabaseHistoryToAddOrUpdate ->
+                fileDatabaseHistoryToAddOrUpdate?.let {
+                    mFileDatabaseHistoryAction?.addOrUpdateFileDatabaseHistory(fileDatabaseHistoryToAddOrUpdate) { fileHistoryAddedOrUpdated ->
+                        fileHistoryAddedOrUpdated?.let {
+                            IOActionTask (
+                                    {
+                                        val newValue = databaseFilesLoaded.value
+                                        newValue?.apply {
+                                            val fileDatabaseInfo = FileDatabaseInfo(getApplication<App>().applicationContext,
+                                                    fileHistoryAddedOrUpdated.databaseUri)
+                                            this.databaseFileAction = databaseFileAction
+                                            val databaseFileToActivate =
+                                                    DatabaseFile(
+                                                            UriUtil.parse(fileHistoryAddedOrUpdated.databaseUri),
+                                                            UriUtil.parse(fileHistoryAddedOrUpdated.keyFileUri),
+                                                            UriUtil.decode(fileHistoryAddedOrUpdated.databaseUri),
+                                                            fileDatabaseInfo.retrieveDatabaseAlias(fileHistoryAddedOrUpdated.databaseAlias),
+                                                            fileDatabaseInfo.exists,
+                                                            fileDatabaseInfo.getModificationString(),
+                                                            fileDatabaseInfo.getSizeString()
+                                                    )
+                                            when (databaseFileAction) {
+                                                DatabaseFileAction.ADD -> {
+                                                    databaseFileList.add(databaseFileToActivate)
+                                                }
+                                                DatabaseFileAction.UPDATE -> {
+                                                    databaseFileList
+                                                            .find { it.databaseUri == databaseFileToActivate.databaseUri }
+                                                            ?.apply {
+                                                                keyFileUri = databaseFileToActivate.keyFileUri
+                                                                databaseAlias = databaseFileToActivate.databaseAlias
+                                                                databaseFileExists = databaseFileToActivate.databaseFileExists
+                                                                databaseLastModified = databaseFileToActivate.databaseLastModified
+                                                                databaseSize = databaseFileToActivate.databaseSize
+                                                            }
+                                                }
+                                                else -> {}
+                                            }
+                                            this.databaseFileToActivate = databaseFileToActivate
+                                        }
+                                    },
+                                    { databaseFileAddedOrUpdated ->
+                                        databaseFileAddedOrUpdated?.let {
+                                            databaseFilesLoaded.value = it
+                                        }
+                                    }
+                            ).execute()
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    fun deleteDatabaseFile(databaseFileToDelete: DatabaseFile) {
+
+        databaseFileToDelete.databaseUri?.let { databaseUri ->
+            mFileDatabaseHistoryAction?.getFileDatabaseHistory(databaseUri) { fileDatabaseHistoryToDelete ->
+                fileDatabaseHistoryToDelete?.let {
+                    mFileDatabaseHistoryAction?.deleteFileDatabaseHistory(fileDatabaseHistoryToDelete) { fileHistoryDeleted ->
+                        fileHistoryDeleted?.let { _ ->
+                            IOActionTask (
+                                    {
+                                        val newValue = databaseFilesLoaded.value
+                                        newValue?.apply {
+                                            databaseFileAction = DatabaseFileAction.DELETE
+                                            databaseFileToActivate =
+                                                    DatabaseFile(
+                                                            UriUtil.parse(fileHistoryDeleted.databaseUri),
+                                                            UriUtil.parse(fileHistoryDeleted.keyFileUri),
+                                                            UriUtil.decode(fileHistoryDeleted.databaseUri),
+                                                            databaseFileToDelete.databaseAlias
+                                                    )
+                                            databaseFileList.remove(databaseFileToDelete)
+                                        }
+                                    },
+                                    { databaseFileDeleted ->
+                                        databaseFileDeleted?.let {
+                                            databaseFilesLoaded.value = it
+                                        }
+                                    }
+                            ).execute()
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    fun consumeAction() {
+        databaseFilesLoaded.value?.apply {
+            databaseFileAction = DatabaseFileAction.NONE
+            databaseFileToActivate = null
+        }
+    }
+
+    class DatabaseFileData {
+        val databaseFileList = ArrayList<DatabaseFile>()
+
+        var databaseFileToActivate: DatabaseFile? = null
+        var databaseFileAction: DatabaseFileAction = DatabaseFileAction.NONE
+    }
+
+    enum class DatabaseFileAction {
+        NONE, ADD, UPDATE, DELETE
+    }
+}

app/src/main/java/com/kunzisoft/keepass/viewmodels/FileDatabaseInfo.kt

@@ -17,14 +17,14 @@
  *  along with KeePassDX.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-package com.kunzisoft.keepass.utils
+package com.kunzisoft.keepass.viewmodels
 
 import android.content.Context
 import android.net.Uri
 import android.text.format.Formatter
 import androidx.documentfile.provider.DocumentFile
-import com.kunzisoft.keepass.app.database.FileDatabaseHistoryAction
 import com.kunzisoft.keepass.settings.PreferencesUtil
+import com.kunzisoft.keepass.utils.UriUtil
 import java.io.Serializable
 import java.text.DateFormat
 import java.util.*
@@ -58,18 +58,6 @@ class FileDatabaseInfo : Serializable {
         }
         private set
 
-    var canRead: Boolean = false
-        get() {
-            return documentFile?.canRead() ?: field
-        }
-        private set
-
-    var canWrite: Boolean = false
-        get() {
-            return documentFile?.canWrite() ?: field
-        }
-        private set
-
     fun getModificationString(): String? {
         return documentFile?.lastModified()?.let {
             DateFormat.getDateTimeInstance()
@@ -83,21 +71,11 @@ class FileDatabaseInfo : Serializable {
         }
     }
 
-    fun retrieveDatabaseAlias(alias: String): String {
+    fun retrieveDatabaseAlias(alias: String): String? {
         return when {
             alias.isNotEmpty() -> alias
-            PreferencesUtil.isFullFilePathEnable(context) -> fileUri?.path ?: ""
-            else -> if (exists) documentFile?.name ?: "" else  fileUri?.path ?: ""
-        }
-    }
-
-    fun retrieveDatabaseTitle(titleCallback: (String)->Unit) {
-        fileUri?.let { fileUri ->
-            FileDatabaseHistoryAction.getInstance(context.applicationContext)
-                    .getFileDatabaseHistory(fileUri) { fileDatabaseHistoryEntity ->
-                titleCallback.invoke(retrieveDatabaseAlias(fileDatabaseHistoryEntity?.databaseAlias
-                        ?: ""))
-            }
+            PreferencesUtil.isFullFilePathEnable(context) -> fileUri?.path
+            else -> if (exists) documentFile?.name else fileUri?.path
         }
     }
 }