Bug 975525 - Refresh action mode buttons when activities are uninstalled. r=mfinkle

mobile/android/base/GeckoApp.java

@@ -425,8 +425,12 @@ public abstract class GeckoApp
 
     @Override
     public boolean onPreparePanel(int featureId, View view, Menu menu) {
-        if (Build.VERSION.SDK_INT >= 11 && featureId == Window.FEATURE_OPTIONS_PANEL)
+        if (Build.VERSION.SDK_INT >= 11 && featureId == Window.FEATURE_OPTIONS_PANEL) {
+            if (menu instanceof GeckoMenu) {
+                ((GeckoMenu) menu).refresh();
+            }
             return onPrepareOptionsMenu(menu);
+        }
 
         return super.onPreparePanel(featureId, view, menu);
     }

mobile/android/base/menu/GeckoMenu.java

@@ -26,6 +26,7 @@ import android.widget.ListView;
 
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 
@@ -636,6 +637,18 @@ public class GeckoMenu extends ListView
         }
     }
 
+    public void refresh() {
+        for (Iterator<GeckoMenuItem> i = mPrimaryActionItems.keySet().iterator(); i.hasNext();) {
+            GeckoMenuItem item = i.next();
+            item.refreshIfChanged();
+        }
+
+        for (Iterator<GeckoMenuItem> i = mSecondaryActionItems.keySet().iterator(); i.hasNext();) {
+            GeckoMenuItem item = i.next();
+            item.refreshIfChanged();
+        }
+    }
+
     // Adapter to bind menu items to the list.
     private class MenuItemsAdapter extends BaseAdapter {
         private static final int VIEW_TYPE_DEFAULT = 0;

mobile/android/base/menu/GeckoMenuItem.java

@@ -222,6 +222,17 @@ public class GeckoMenuItem implements MenuItem {
         return this;
     }
 
+    public void refreshIfChanged() {
+        if (mActionProvider == null)
+            return;
+
+        if (mActionProvider instanceof GeckoActionProvider) {
+            if (((GeckoActionProvider) mActionProvider).hasChanged()) {
+                mShowAsActionChangedListener.onShowAsActionChanged(GeckoMenuItem.this);
+            }
+        }
+    }
+
     @Override
     public MenuItem setActionView(int resId) {
         return this;

mobile/android/base/widget/ActivityChooserModel.java

@@ -319,6 +319,8 @@ public class ActivityChooserModel extends DataSetObservable {
      */
     private boolean mReloadActivities = false;
 
+    private long mLastChanged = 0;
+
     /**
      * Policy for controlling how the model handles chosen activities.
      */
@@ -745,6 +747,7 @@ public class ActivityChooserModel extends DataSetObservable {
                 ResolveInfo resolveInfo = resolveInfos.get(i);
                 mActivities.add(new ActivityResolveInfo(resolveInfo));
             }
+            mLastChanged = System.currentTimeMillis();
             return true;
         }
         return false;
@@ -1220,7 +1223,11 @@ public class ActivityChooserModel extends DataSetObservable {
             }
 
             mReloadActivities = true;
+            mLastChanged = System.currentTimeMillis();
         }
     }
-}
 
+    public long getLastChanged() {
+        return mLastChanged;
+    }
+}

mobile/android/base/widget/GeckoActionProvider.java

@@ -21,6 +21,7 @@ import android.view.View.OnClickListener;
 
 public class GeckoActionProvider extends ActionProvider {
     private static int MAX_HISTORY_SIZE = 2;
+    private long mLastChanged = 0;
 
     /**
      * A listener to know when a target was selected.
@@ -79,6 +80,14 @@ public class GeckoActionProvider extends ActionProvider {
         return onCreateActionView();
     }
 
+    public boolean hasChanged() {
+        ActivityChooserModel dataModel = ActivityChooserModel.get(mContext, mHistoryFileName);
+        long lastChanged = dataModel.getLastChanged();
+        boolean ret = lastChanged != mLastChanged;
+        mLastChanged = lastChanged;
+        return ret;
+    }
+
     @Override
     public boolean hasSubMenu() {
         return true;