Rich Text Editor: fix several inset issues in room screen (#7681)

changelog.d/7680.bugfix

@@ -0,0 +1,3 @@
+Rich Text Editor: fix several issues related to insets:
+* Empty space displayed at the bottom when you don't have permissions to send messages into a room.
+* Wrong insets being kept when you exit the room screen and the keyboard is displayed, then come back to it.

vector/src/main/java/im/vector/app/core/utils/ExpandingBottomSheetBehavior.kt

@@ -608,26 +608,33 @@ class ExpandingBottomSheetBehavior<V : View> : CoordinatorLayout.Behavior<V> {
         initialPaddingBottom = view.paddingBottom
 
         // This should only be used to set initial insets and other edge cases where the insets can't be applied using an animation.
-        var applyInsetsFromAnimation = false
+        var isAnimating = false
 
-        // This will animated inset changes, making them look a lot better. However, it won't update initial insets.
+        // This will animate inset changes, making them look a lot better. However, it won't update initial insets.
         ViewCompat.setWindowInsetsAnimationCallback(view, object : WindowInsetsAnimationCompat.Callback(DISPATCH_MODE_STOP) {
+            override fun onPrepare(animation: WindowInsetsAnimationCompat) {
+                isAnimating = true
+            }
+
             override fun onProgress(insets: WindowInsetsCompat, runningAnimations: MutableList<WindowInsetsAnimationCompat>): WindowInsetsCompat {
-                return applyInsets(view, insets)
+                return if (isAnimating) {
+                    applyInsets(view, insets)
+                } else {
+                    insets
+                }
             }
 
             override fun onEnd(animation: WindowInsetsAnimationCompat) {
-                applyInsetsFromAnimation = false
+                isAnimating = false
                 view.requestApplyInsets()
             }
         })
 
         ViewCompat.setOnApplyWindowInsetsListener(view) { _: View, insets: WindowInsetsCompat ->
-            if (!applyInsetsFromAnimation) {
+            if (isAnimating) {
-                applyInsetsFromAnimation = true
-                applyInsets(view, insets)
-            } else {
                 insets
+            } else {
+                applyInsets(view, insets)
             }
         }
 

vector/src/main/java/im/vector/app/features/home/room/detail/composer/MessageComposerFragment.kt

@@ -255,7 +255,7 @@ class MessageComposerFragment : VectorBaseFragment<FragmentComposerBinding>(), A
     ) { mainState, messageComposerState, attachmentState ->
         if (mainState.tombstoneEvent != null) return@withState
 
-        (composer as? View)?.isInvisible = !messageComposerState.isComposerVisible
+        (composer as? View)?.isVisible = messageComposerState.isComposerVisible
         composer.sendButton.isInvisible = !messageComposerState.isSendButtonVisible
         (composer as? RichTextComposerLayout)?.isTextFormattingEnabled = attachmentState.isTextFormattingEnabled
     }

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

@@ -75,7 +75,7 @@
             android:layout_width="0dp"
             android:layout_height="0dp"
             android:overScrollMode="always"
-            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintBottom_toTopOf="@id/notificationAreaView"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/removeJitsiWidgetView"