Updating AppWidgetHost to receive a callback when any appWidget has changed. (Bug 6602951)

Change-Id: I76d688b10ee7775b4ebe81259713f2aaf0009d05

2 files changed, 20 insertions, 1 deletions

diff --git a/core/java/android/appwidget/AppWidgetHost.java b/core/java/android/appwidget/AppWidgetHost.java
index 08bc0ac..2c19c0c 100644
--- a/core/java/android/appwidget/AppWidgetHost.java
+++ b/core/java/android/appwidget/AppWidgetHost.java
@@ -41,7 +41,8 @@ public class AppWidgetHost {
 
     static final int HANDLE_UPDATE = 1;
     static final int HANDLE_PROVIDER_CHANGED = 2;
-    static final int HANDLE_VIEW_DATA_CHANGED = 3;
+    static final int HANDLE_PROVIDERS_CHANGED = 3;
+    static final int HANDLE_VIEW_DATA_CHANGED = 4;
 
     final static Object sServiceLock = new Object();
     static IAppWidgetService sService;
@@ -65,6 +66,11 @@ public class AppWidgetHost {
             msg.sendToTarget();
         }
 
+        public void providersChanged() {
+            Message msg = mHandler.obtainMessage(HANDLE_PROVIDERS_CHANGED);
+            msg.sendToTarget();
+        }
+
         public void viewDataChanged(int appWidgetId, int viewId) {
             Message msg = mHandler.obtainMessage(HANDLE_VIEW_DATA_CHANGED);
             msg.arg1 = appWidgetId;
@@ -88,6 +94,10 @@ public class AppWidgetHost {
                     onProviderChanged(msg.arg1, (AppWidgetProviderInfo)msg.obj);
                     break;
                 }
+                case HANDLE_PROVIDERS_CHANGED: {
+                    onProvidersChanged();
+                    break;
+                }
                 case HANDLE_VIEW_DATA_CHANGED: {
                     viewDataChanged(msg.arg1, msg.arg2);
                     break;
@@ -274,6 +284,14 @@ public class AppWidgetHost {
         }
     }
 
+    /**
+     * Called when the set of available widgets changes (ie. widget containing packages
+     * are added, updated or removed, or widget components are enabled or disabled.)
+     */
+    protected void onProvidersChanged() {
+        // Do nothing
+    }
+
     void updateAppWidgetView(int appWidgetId, RemoteViews views) {
         AppWidgetHostView v;
         synchronized (mViews) {
diff --git a/core/java/com/android/internal/appwidget/IAppWidgetHost.aidl b/core/java/com/android/internal/appwidget/IAppWidgetHost.aidl
index 216d985..78b4466 100644
--- a/core/java/com/android/internal/appwidget/IAppWidgetHost.aidl
+++ b/core/java/com/android/internal/appwidget/IAppWidgetHost.aidl
@@ -24,6 +24,7 @@ import android.widget.RemoteViews;
 oneway interface IAppWidgetHost {
     void updateAppWidget(int appWidgetId, in RemoteViews views);
     void providerChanged(int appWidgetId, in AppWidgetProviderInfo info);
+    void providersChanged();
     void viewDataChanged(int appWidgetId, int viewId);
 }