Delete nodes with viewmodel

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

@@ -86,7 +86,6 @@ class GroupActivity : LockingActivity(),
         TimePickerDialog.OnTimeSetListener,
         GroupFragment.NodeClickListener,
         GroupFragment.NodesActionMenuListener,
-        DeleteNodesDialogFragment.DeleteNodeListener,
         GroupFragment.OnScrollListener,
         SortDialogFragment.SortSelectionListener {
 

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

@@ -20,63 +20,35 @@
 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 androidx.fragment.app.activityViewModels
 import com.kunzisoft.keepass.R
-import com.kunzisoft.keepass.database.element.Database
 import com.kunzisoft.keepass.database.element.node.Node
-import com.kunzisoft.keepass.services.DatabaseTaskNotificationService
-import com.kunzisoft.keepass.services.DatabaseTaskNotificationService.Companion.getBundleFromListNodes
-import com.kunzisoft.keepass.services.DatabaseTaskNotificationService.Companion.getListNodesFromBundle
+import com.kunzisoft.keepass.viewmodels.NodesViewModel
 
 open 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 onDetach() {
-        mListener = null
-        super.onDetach()
-    }
+    private val mNodesViewModel: NodesViewModel by activityViewModels()
 
     protected open fun retrieveMessage(): String {
         return getString(R.string.warning_permanently_delete_nodes)
     }
 
     override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
-
-        arguments?.apply {
-            if (containsKey(DatabaseTaskNotificationService.GROUPS_ID_KEY)
-                    && containsKey(DatabaseTaskNotificationService.ENTRIES_ID_KEY)) {
-                // TODO Database
-                mNodesToDelete = getListNodesFromBundle(Database.getInstance(), this)
-            }
-        } ?: savedInstanceState?.apply {
-            if (containsKey(DatabaseTaskNotificationService.GROUPS_ID_KEY)
-                    && containsKey(DatabaseTaskNotificationService.ENTRIES_ID_KEY)) {
-                // TODO Database
-                mNodesToDelete = getListNodesFromBundle(Database.getInstance(), savedInstanceState)
-            }
+        mNodesViewModel.nodesToDelete.observe(this) {
+            this.mNodesToDelete = it
         }
+
         activity?.let { activity ->
             // Use the Builder class for convenient dialog construction
             val builder = AlertDialog.Builder(activity)
 
             builder.setMessage(retrieveMessage())
             builder.setPositiveButton(android.R.string.ok) { _, _ ->
-                mListener?.permanentlyDeleteNodes(mNodesToDelete)
+                mNodesViewModel.permanentlyDeleteNodes(mNodesToDelete)
             }
             builder.setNegativeButton(android.R.string.cancel) { _, _ -> dismiss() }
             // Create the AlertDialog object and return it
@@ -84,21 +56,4 @@ open class DeleteNodesDialogFragment : DialogFragment() {
         }
         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/EmptyRecycleBinDialogFragment.kt

@@ -20,20 +20,10 @@
 package com.kunzisoft.keepass.activities.dialogs
 
 import com.kunzisoft.keepass.R
-import com.kunzisoft.keepass.database.element.node.Node
-import com.kunzisoft.keepass.services.DatabaseTaskNotificationService.Companion.getBundleFromListNodes
 
 class EmptyRecycleBinDialogFragment : DeleteNodesDialogFragment() {
 
     override fun retrieveMessage(): String {
         return getString(R.string.warning_empty_recycle_bin)
     }
-
-    companion object {
-        fun getInstance(nodesToDelete: List<Node>): EmptyRecycleBinDialogFragment {
-            return EmptyRecycleBinDialogFragment().apply {
-                arguments = getBundleFromListNodes(nodesToDelete)
-            }
-        }
-    }
 }

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

@@ -28,6 +28,7 @@ import android.view.MotionEvent
 import android.view.View
 import android.view.ViewGroup
 import android.widget.Toast
+import androidx.activity.viewModels
 import com.kunzisoft.keepass.R
 import com.kunzisoft.keepass.activities.dialogs.DeleteNodesDialogFragment
 import com.kunzisoft.keepass.activities.dialogs.EmptyRecycleBinDialogFragment
@@ -49,11 +50,13 @@ import com.kunzisoft.keepass.settings.PreferencesUtil
 import com.kunzisoft.keepass.tasks.ActionRunnable
 import com.kunzisoft.keepass.timeout.TimeoutHelper
 import com.kunzisoft.keepass.utils.*
+import com.kunzisoft.keepass.viewmodels.NodesViewModel
 import java.util.*
 
 abstract class LockingActivity : SpecialModeActivity(),
-    PasswordEncodingDialogFragment.Listener,
-    DeleteNodesDialogFragment.DeleteNodeListener {
+    PasswordEncodingDialogFragment.Listener {
+
+    private val mNodesViewModel: NodesViewModel by viewModels()
 
     protected var mTimeoutEnable: Boolean = true
 
@@ -88,6 +91,10 @@ abstract class LockingActivity : SpecialModeActivity(),
                     intent.getBooleanExtra(TIMEOUT_ENABLE_KEY, TIMEOUT_ENABLE_KEY_DEFAULT)
         }
 
+        mNodesViewModel.nodesToPermanentlyDelete.observe(this) { nodes ->
+            permanentlyDeleteNodes(nodes)
+        }
+
         mExitLock = false
     }
 
@@ -219,16 +226,17 @@ abstract class LockingActivity : SpecialModeActivity(),
             else {
                 val deleteNodesDialogFragment: DeleteNodesDialogFragment =
                     if (recycleBin) {
-                        EmptyRecycleBinDialogFragment.getInstance(nodes)
+                        EmptyRecycleBinDialogFragment()
                     } else {
-                        DeleteNodesDialogFragment.getInstance(nodes)
+                        DeleteNodesDialogFragment()
                     }
                 deleteNodesDialogFragment.show(supportFragmentManager, "deleteNodesDialogFragment")
+                mNodesViewModel.deleteNodes(nodes)
             }
         }
     }
 
-    override fun permanentlyDeleteNodes(nodes: List<Node>) {
+    private fun permanentlyDeleteNodes(nodes: List<Node>) {
         deleteDatabaseNodes(nodes,!mReadOnly && mAutoSaveEnable)
     }
 

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

@@ -0,0 +1,24 @@
+package com.kunzisoft.keepass.viewmodels
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import com.kunzisoft.keepass.database.element.node.Node
+
+class NodesViewModel: ViewModel() {
+
+    val nodesToDelete : LiveData<List<Node>> get() = _nodesToDelete
+    private val _nodesToDelete = MutableLiveData<List<Node>>()
+
+    val nodesToPermanentlyDelete : LiveData<List<Node>> get() = _nodesToPermanentlyDelete
+    private val _nodesToPermanentlyDelete = SingleLiveEvent<List<Node>>()
+
+    fun deleteNodes(nodes: List<Node>) {
+        this._nodesToDelete.value = nodes
+    }
+
+    fun permanentlyDeleteNodes(nodes: List<Node>) {
+        this._nodesToDelete.value = listOf()
+        this._nodesToPermanentlyDelete.value = nodes
+    }
+}