Update expanded view positioning for RTL

Fix expanded view position when an RTL language is selected in the system.
Bubble bar and expanded view should be positioned on the left.

Bug: 273310265
Test: enable pseudo RTL language in the settings, observe that expanded
  view is shown on the left
Test: use LTR language, observe that expanded view is on the right

Change-Id: I7acd5157153661388b4050aa6a0035bccfac669b
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/bar/BubbleBarLayerView.java b/libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/bar/BubbleBarLayerView.java
index 1211451..bd8ce80 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/bar/BubbleBarLayerView.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/bar/BubbleBarLayerView.java
@@ -26,6 +26,7 @@
 import android.graphics.Rect;
 import android.graphics.Region;
 import android.graphics.drawable.ColorDrawable;
+import android.view.Gravity;
 import android.view.TouchDelegate;
 import android.view.View;
 import android.view.ViewTreeObserver;
@@ -74,10 +75,6 @@
     private DismissView mDismissView;
     private @Nullable Consumer<String> mUnBubbleConversationCallback;
 
-    // TODO(b/273310265) - currently the view is always on the right, need to update for RTL.
-    /** Whether the expanded view is displaying on the left of the screen or not. */
-    private boolean mOnLeft = false;
-
     /** Whether a bubble is expanded. */
     private boolean mIsExpanded = false;
 
@@ -154,10 +151,10 @@
         return mIsExpanded;
     }
 
-    // (TODO: b/273310265): BubblePositioner should be source of truth when this work is done.
+    // TODO(b/313661121) - when dragging is implemented, check user setting first
     /** Whether the expanded view is positioned on the left or right side of the screen. */
     public boolean isOnLeft() {
-        return mOnLeft;
+        return getLayoutDirection() == LAYOUT_DIRECTION_RTL;
     }
 
     /** Shows the expanded view of the provided bubble. */
@@ -216,7 +213,7 @@
                         return Unit.INSTANCE;
                     });
 
-            addView(mExpandedView, new FrameLayout.LayoutParams(width, height));
+            addView(mExpandedView, new LayoutParams(width, height, Gravity.LEFT));
         }
 
         if (mEducationViewController.isEducationVisible()) {
@@ -311,7 +308,7 @@
         lp.width = width;
         lp.height = height;
         mExpandedView.setLayoutParams(lp);
-        if (mOnLeft) {
+        if (isOnLeft()) {
             mExpandedView.setX(mPositioner.getInsets().left + padding);
         } else {
             mExpandedView.setX(mPositioner.getAvailableRect().width() - width - padding);