[fenix] For https://github.com/mozilla-mobile/fenix/issues/225 - Deletes data on button press

app/src/main/java/org/mozilla/fenix/settings/DeleteBrowsingDataFragment.kt

@@ -4,20 +4,28 @@
 
 package org.mozilla.fenix.settings
 
+import android.content.DialogInterface
 import android.os.Bundle
 import android.util.Log
+import android.view.ContextThemeWrapper
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
+import kotlinx.android.synthetic.main.fragment_delete_browsing_data.*
 import kotlinx.android.synthetic.main.fragment_delete_browsing_data.view.*
 import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Deferred
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
+import kotlinx.coroutines.async
+import kotlinx.coroutines.awaitAll
 import kotlinx.coroutines.launch
 import mozilla.components.browser.session.Session
 import mozilla.components.browser.session.SessionManager
+import mozilla.components.concept.engine.Engine
 import org.mozilla.fenix.R
 import org.mozilla.fenix.ext.requireComponents
 import kotlin.coroutines.CoroutineContext
@@ -66,6 +74,12 @@ class DeleteBrowsingDataFragment : Fragment(), CoroutineScope {
         requireComponents.core.sessionManager.register(sessionObserver, owner = this)
 
         view?.open_tabs_item?.onCheckListener = { _ -> updateDeleteButton() }
+        view?.browsing_data_item?.onCheckListener = { _ -> updateDeleteButton() }
+        view?.collections_item?.onCheckListener = { _ -> updateDeleteButton() }
+
+        view?.delete_data?.setOnClickListener {
+            askToDelete()
+        }
     }
 
     override fun onDestroyView() {
@@ -86,13 +100,76 @@ class DeleteBrowsingDataFragment : Fragment(), CoroutineScope {
         updateDeleteButton()
     }
 
-    private fun updateDeleteButton() {
-        view?.delete_data?.isEnabled =
-            view!!.open_tabs_item!!.isChecked
-            || view!!.browsing_data_item!!.isChecked
-            || view!!.collections_item!!.isChecked
+    private fun askToDelete() {
+        AlertDialog.Builder(
+            ContextThemeWrapper(
+                activity,
+                R.style.DialogStyle
+            )
+        ).apply {
+            val appName = context.getString(R.string.app_name)
+            val message = context.getString(R.string.preferences_delete_browsing_data_prompt_message, appName)
+            setMessage(message)
 
-        Log.e("wat", view?.delete_data?.isEnabled.toString())
+            setNegativeButton(R.string.preferences_delete_browsing_data_prompt_cancel) { dialog: DialogInterface, _ ->
+                dialog.cancel()
+            }
+
+            setPositiveButton(R.string.preferences_delete_browsing_data_prompt_allow) { dialog: DialogInterface, _ ->
+                dialog.dismiss()
+                deleteSelected()
+            }
+            create()
+        }.show()
+    }
+
+    private fun deleteSelected() {
+        val open_tabs = view!!.open_tabs_item!!.isChecked
+        val browsing_data = view!!.browsing_data_item!!.isChecked
+        val collections = view!!.collections_item!!.isChecked
+
+        startDeletion()
+        launch(Dispatchers.IO) {
+            var jobs = mutableListOf<Deferred<Unit>>()
+            if (open_tabs) jobs.add(deleteTabsAsync())
+            if (browsing_data) jobs.add(deleteBrowsingDataAsync())
+            if (collections) jobs.add(deleteCollectionsAsync())
+
+            jobs.awaitAll()
+
+            launch(Dispatchers.Main) {
+                finishDeletion()
+            }
+        }
+
+    }
+
+    fun startDeletion() {
+        progress_bar.visibility = View.VISIBLE
+        delete_browsing_data_wrapper.isEnabled = false
+        delete_browsing_data_wrapper.isClickable = false
+        delete_browsing_data_wrapper.alpha = 0.6f
+    }
+
+    fun finishDeletion() {
+        progress_bar.visibility = View.GONE
+        delete_browsing_data_wrapper.isEnabled = true
+        delete_browsing_data_wrapper.isClickable = true
+        delete_browsing_data_wrapper.alpha = 1f
+
+        updateTabCount()
+        updateHistoryCount()
+        updateCollectionsCount()
+    }
+
+    private fun updateDeleteButton() {
+        val open_tabs = view!!.open_tabs_item!!.isChecked
+        val browsing_data = view!!.browsing_data_item!!.isChecked
+        val collections = view!!.collections_item!!.isChecked
+        val enabled = open_tabs || browsing_data || collections
+
+        view?.delete_data?.isEnabled = enabled
+        view?.delete_data?.alpha = if (enabled) 1f else 0.6f
     }
 
     private fun updateTabCount() {
@@ -135,4 +212,18 @@ class DeleteBrowsingDataFragment : Fragment(), CoroutineScope {
             }
         }
     }
+
+    private fun deleteTabsAsync() = async(Dispatchers.IO) { requireComponents.core.sessionManager.removeSessions() }
+
+    private fun deleteBrowsingDataAsync() = async(Dispatchers.IO) {
+        requireComponents.core.engine.clearData(Engine.BrowsingData.all())
+        requireComponents.core.historyStorage.deleteEverything()
+    }
+
+    private fun deleteCollectionsAsync() = async(Dispatchers.IO) {
+        val count = requireComponents.core.tabCollectionStorage.getTabCollectionsCount()
+        val data = requireComponents.core.tabCollectionStorage.getCollections(count).value?.forEach {
+            requireComponents.core.tabCollectionStorage.removeCollection(it)
+        }
+    }
 }

app/src/main/res/layout/activity_home.xml

@@ -17,7 +17,8 @@
         app:titleMarginEnd="16dp"
         app:titleTextAppearance="@style/ToolbarTitleTextStyle"
         android:background="?foundation"
-        android:elevation="8dp"/>
+        android:elevation="8dp">
+    </androidx.appcompat.widget.Toolbar>
 
     <fragment
         android:id="@+id/container"

app/src/main/res/layout/fragment_delete_browsing_data.xml

@@ -2,61 +2,79 @@
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<ScrollView
+<androidx.constraintlayout.widget.ConstraintLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="fill_parent"
-    android:layout_height="fill_parent">
-
-    <LinearLayout
+    android:layout_height="match_parent"
+    android:layout_width="match_parent">
+    <ProgressBar
+        android:id="@+id/progress_bar"
+        style="@style/Widget.AppCompat.ProgressBar.Horizontal"
+        android:indeterminate="true"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:orientation="vertical">
-        <org.mozilla.fenix.settings.DeleteBrowsingDataItem
-            android:id="@+id/open_tabs_item"
+        android:layout_height="8dp"
+        android:translationY="-3dp"
+        android:visibility="gone"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+    <ScrollView
+        android:id="@+id/delete_browsing_data_wrapper"
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent">
+        <LinearLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:background="?android:attr/selectableItemBackground"
-            android:clickable="true"
-            android:contentDescription="@string/library_bookmarks"
-            android:focusable="true"
-            app:deleteBrowsingDataItemIcon="@drawable/ic_tab_circle_background"
-            app:deleteBrowsingDataItemTitle="@string/preferences_delete_browsing_data_tabs_title"
-            app:deleteBrowsingDataItemSubtitle="@string/preferences_delete_browsing_data_tabs_subtitle" />
-        <org.mozilla.fenix.settings.DeleteBrowsingDataItem
-            android:id="@+id/browsing_data_item"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:background="?android:attr/selectableItemBackground"
-            android:clickable="true"
-            android:contentDescription="@string/library_bookmarks"
-            android:focusable="true"
-            app:deleteBrowsingDataItemIcon="@drawable/library_icon_history_circle_background"
-            app:deleteBrowsingDataItemTitle="@string/preferences_delete_browsing_data_browsing_data_title"
-            app:deleteBrowsingDataItemSubtitle="@string/preferences_delete_browsing_data_browsing_data_subtitle" />
-        <org.mozilla.fenix.settings.DeleteBrowsingDataItem
-            android:id="@+id/collections_item"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:background="?android:attr/selectableItemBackground"
-            android:clickable="true"
-            android:contentDescription="@string/library_bookmarks"
-            android:focusable="true"
-            app:deleteBrowsingDataItemIcon="@drawable/ic_collections_circle_background"
-            app:deleteBrowsingDataItemTitle="@string/preferences_delete_browsing_data_collections_title"
-            app:deleteBrowsingDataItemSubtitle="@string/preferences_delete_browsing_data_collections_subtitle" />
-        <Button android:id="@+id/delete_data"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout_gravity="start"
-            android:layout_margin="12dp"
-            android:backgroundTint="?attr/neutral"
-            android:paddingStart="24dp"
-            android:paddingEnd="24dp"
-            android:text="@string/preferences_delete_browsing_data_button"
-            android:textAllCaps="false"
-            android:textColor="?attr/accentHighContrast"
-            android:textSize="16sp"
-            android:textStyle="bold" />
-    </LinearLayout>
-</ScrollView>
+            android:orientation="vertical">
+            <org.mozilla.fenix.settings.DeleteBrowsingDataItem
+                android:id="@+id/open_tabs_item"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="?android:attr/selectableItemBackground"
+                android:clickable="true"
+                android:contentDescription="@string/library_bookmarks"
+                android:focusable="true"
+                app:deleteBrowsingDataItemIcon="@drawable/ic_tab_circle_background"
+                app:deleteBrowsingDataItemTitle="@string/preferences_delete_browsing_data_tabs_title"
+                app:deleteBrowsingDataItemSubtitle="@string/preferences_delete_browsing_data_tabs_subtitle" />
+            <org.mozilla.fenix.settings.DeleteBrowsingDataItem
+                android:id="@+id/browsing_data_item"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="?android:attr/selectableItemBackground"
+                android:clickable="true"
+                android:contentDescription="@string/library_bookmarks"
+                android:focusable="true"
+                app:deleteBrowsingDataItemIcon="@drawable/library_icon_history_circle_background"
+                app:deleteBrowsingDataItemTitle="@string/preferences_delete_browsing_data_browsing_data_title"
+                app:deleteBrowsingDataItemSubtitle="@string/preferences_delete_browsing_data_browsing_data_subtitle" />
+            <org.mozilla.fenix.settings.DeleteBrowsingDataItem
+                android:id="@+id/collections_item"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="?android:attr/selectableItemBackground"
+                android:clickable="true"
+                android:contentDescription="@string/library_bookmarks"
+                android:focusable="true"
+                app:deleteBrowsingDataItemIcon="@drawable/ic_collections_circle_background"
+                app:deleteBrowsingDataItemTitle="@string/preferences_delete_browsing_data_collections_title"
+                app:deleteBrowsingDataItemSubtitle="@string/preferences_delete_browsing_data_collections_subtitle" />
+            <Button android:id="@+id/delete_data"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_gravity="start"
+                android:layout_margin="12dp"
+                android:backgroundTint="?attr/neutral"
+                android:paddingStart="24dp"
+                android:paddingEnd="24dp"
+                android:text="@string/preferences_delete_browsing_data_button"
+                android:textAllCaps="false"
+                android:textColor="?attr/accentHighContrast"
+                android:textSize="16sp"
+                android:textStyle="bold" />
+        </LinearLayout>
+    </ScrollView>
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/navigation/nav_graph.xml

@@ -3,7 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/nav_graph"
-    app:startDestination="@id/deleteBrowsingDataFragment">
+    app:startDestination="@id/homeFragment">
 
     <action
         android:id="@+id/action_global_browser"

app/src/main/res/values/strings.xml

@@ -581,4 +581,11 @@
     <string name="preferences_delete_browsing_data_collections_subtitle">%d collections</string>
     <!-- Text for the button to delete browsing data -->
     <string name="preferences_delete_browsing_data_button">Delete browsing data</string>
+
+    <!-- Dialog message to the user asking to delete browsing data. Parameter is the name of the app (e.g. Fenix) -->
+    <string name="preferences_delete_browsing_data_prompt_message">Allow %s to delete your browsing data?</string>
+    <!-- Text for the cancel button for the data deletion dialog -->
+    <string name="preferences_delete_browsing_data_prompt_cancel">Don’t allow</string>
+    <!-- Text for the allow button for the data deletion dialog -->
+    <string name="preferences_delete_browsing_data_prompt_allow">Allow</string>
 </resources>