Fix b/5317371 to make action-bar consistent with framework CAB.

1. Refactor to decouple ActionBar from FilterStackListener and
ActionBarListener to avoid FilterStack/Toolbar depending on ActionBar.
2. Recreate the action-bar on configuration changes and restore button
status and behaviors from the old action-bar.
3. Use framework CAB styles/dimensions to have consistent look and feel.

Change-Id: Ib7be0e0b8135f5f86af65b320f09b3d691464f54

1 files changed, 11 insertions, 2 deletions

diff --git a/src/com/android/gallery3d/photoeditor/FilterStack.java b/src/com/android/gallery3d/photoeditor/FilterStack.java
index 3b35aa3e1..5b8d0d743 100644
--- a/src/com/android/gallery3d/photoeditor/FilterStack.java
+++ b/src/com/android/gallery3d/photoeditor/FilterStack.java
@@ -113,7 +113,7 @@ public class FilterStack {
     }
 
     private void callbackDone(final OnDoneCallback callback) {
-        // Call back in UI thread to report done.
+        // GL thread calls back to report UI thread the task is done.
         photoView.post(new Runnable() {
 
             @Override
@@ -124,7 +124,16 @@ public class FilterStack {
     }
 
     private void stackChanged() {
-        stackListener.onStackChanged(!appliedStack.empty(), !redoStack.empty());
+        // GL thread calls back to report UI thread the stack is changed.
+        final boolean canUndo = !appliedStack.empty();
+        final boolean canRedo = !redoStack.empty();
+        photoView.post(new Runnable() {
+
+            @Override
+            public void run() {
+                stackListener.onStackChanged(canUndo, canRedo);
+            }
+        });
     }
 
     public void saveBitmap(final OnDoneBitmapCallback callback) {