Show confirmation dialog before deleting a message

Fixes #967

CHANGES.md

@@ -5,6 +5,7 @@ Features ✨:
  -
 
 Improvements 🙌:
+ - Show confirmation dialog before deleting a message (#967)
  - Improve navigation to the timeline (#789, #862)
  - Improve network detection. It is now based on the sync request status (#873, #882) 
 

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailFragment.kt

@@ -1108,8 +1108,15 @@ class RoomDetailFragment @Inject constructor(
                 showSnackWithMessage(getString(R.string.copied_to_clipboard), Snackbar.LENGTH_SHORT)
             }
             is EventSharedAction.Delete                     -> {
+                val layout = requireActivity().layoutInflater.inflate(R.layout.dialog_delete_event, null)
+                AlertDialog.Builder(requireActivity())
+                        .setView(layout)
+                        .setPositiveButton(R.string.delete) { _, _ ->
                             roomDetailViewModel.handle(RoomDetailAction.RedactAction(action.eventId, context?.getString(R.string.event_redacted_by_user_reason)))
                         }
+                        .setNegativeButton(R.string.cancel, null)
+                        .show()
+            }
             is EventSharedAction.Share                      -> {
                 // TODO current data communication is too limited
                 // Need to now the media type

vector/src/main/res/layout/dialog_delete_event.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/layout_root"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:paddingStart="?dialogPreferredPadding"
+    android:paddingLeft="?dialogPreferredPadding"
+    android:paddingTop="12dp"
+    android:paddingEnd="?dialogPreferredPadding"
+    android:paddingRight="?dialogPreferredPadding"
+    android:paddingBottom="12dp">
+
+    <TextView
+        android:id="@+id/deleteEventConfirmationText"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/delete_event_dialog_content"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

vector/src/main/res/values/strings_riotX.xml

@@ -19,6 +19,10 @@
 
     <!-- END Strings added by Benoit -->
 
+    <!-- BEGIN Strings added by Onuray -->
+    <string name="delete_event_dialog_content">Delete message?</string>
+    <!-- END Strings added by Onuray -->
+
 
     <!-- BEGIN Strings added by Others -->