Don't re-animate global actions dialog dismissal

- If the GlobalActionsDialog is already dismissing,
don't restart its dismissing animation

Test: manual
Bug: 112347302
Change-Id: If240ffe37c4ce17d0e3fc13f2ae470b591f72f6a
diff --git a/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsDialog.java b/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsDialog.java
index 6c94aa4..a195fc9 100644
--- a/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsDialog.java
+++ b/packages/SystemUI/src/com/android/systemui/globalactions/GlobalActionsDialog.java
@@ -1399,6 +1399,7 @@
         private final ColorExtractor mColorExtractor;
         private boolean mKeyguardShowing;
         private boolean mShouldDisplaySeparatedButton;
+        private boolean mShowing;
 
         public ActionsDialog(Context context, OnClickListener clickListener, MyAdapter adapter,
                 OnItemLongClickListener longClickListener, boolean shouldDisplaySeparatedButton) {
@@ -1507,6 +1508,7 @@
         @Override
         public void show() {
             super.show();
+            mShowing = true;
             mGradientDrawable.setAlpha(0);
             mHardwareLayout.setTranslationX(getAnimTranslation());
             mHardwareLayout.setAlpha(0);
@@ -1526,6 +1528,10 @@
 
         @Override
         public void dismiss() {
+            if (!mShowing) {
+                return;
+            }
+            mShowing = false;
             mHardwareLayout.setTranslationX(0);
             mHardwareLayout.setAlpha(1);
             mHardwareLayout.animate()
@@ -1544,6 +1550,7 @@
 
         void dismissImmediately() {
             super.dismiss();
+            mShowing = false;
         }
 
         private float getAnimTranslation() {