Make invalidateOptionsMenu asynchronous

Process any pending menu invalidations on the animation tick, before
traversals are performed. Collapse multiple menu invalidations
together.

Bug 7189372

Change-Id: I7a33ae9813980eb8fbcc958804de2c03328ecca8

Author: adamp

core/java/android/view/Window.java

@@ -89,6 +89,13 @@ public abstract class Window {
      * If overlay is enabled, the action mode UI will be allowed to cover existing window content.
      */
     public static final int FEATURE_ACTION_MODE_OVERLAY = 10;
+
+    /**
+     * Max value used as a feature ID
+     * @hide
+     */
+    public static final int FEATURE_MAX = FEATURE_ACTION_MODE_OVERLAY;
+
     /** Flag for setting the progress bar's visibility to VISIBLE */
     public static final int PROGRESS_VISIBILITY_ON = -1;
     /** Flag for setting the progress bar's visibility to GONE */

policy/src/com/android/internal/policy/impl/PhoneWindow.java

@@ -192,6 +192,20 @@ public class PhoneWindow extends Window implements MenuBuilder.Callback {
 
     private int mUiOptions = 0;
 
+    private boolean mInvalidatePanelMenuPosted;
+    private int mInvalidatePanelMenuFeatures;
+    private final Runnable mInvalidatePanelMenuRunnable = new Runnable() {
+        @Override public void run() {
+            for (int i = 0; i <= FEATURE_MAX; i++) {
+                if ((mInvalidatePanelMenuFeatures & 1 << i) != 0) {
+                    doInvalidatePanelMenu(i);
+                }
+            }
+            mInvalidatePanelMenuPosted = false;
+            mInvalidatePanelMenuFeatures = 0;
+        }
+    };
+
     static class WindowManagerHolder {
         static final IWindowManager sWindowManager = IWindowManager.Stub.asInterface(
                 ServiceManager.getService("window"));
@@ -722,6 +736,15 @@ public final void togglePanel(int featureId, KeyEvent event) {
 
     @Override
     public void invalidatePanelMenu(int featureId) {
+        mInvalidatePanelMenuFeatures |= 1 << featureId;
+
+        if (!mInvalidatePanelMenuPosted && mDecor != null) {
+            mDecor.postOnAnimation(mInvalidatePanelMenuRunnable);
+            mInvalidatePanelMenuPosted = true;
+        }
+    }
+
+    void doInvalidatePanelMenu(int featureId) {
         PanelFeatureState st = getPanelState(featureId, true);
         Bundle savedActionViewStates = null;
         if (st.menu != null) {
@@ -2842,6 +2865,9 @@ private void installDecor() {
             mDecor.setIsRootNamespace(true);
             mDecor.setLayoutDirection(
                     getContext().getResources().getConfiguration().getLayoutDirection());
+            if (!mInvalidatePanelMenuPosted && mInvalidatePanelMenuFeatures != 0) {
+                mDecor.postOnAnimation(mInvalidatePanelMenuRunnable);
+            }
         }
         if (mContentParent == null) {
             mContentParent = generateLayout(mDecor);