Using EventBus for AppWidgetProviderChanges. (b78bb4fb) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/recents/RecentsActivity.java

+16 −12

Original line number	Diff line number	Diff line
		@@ -33,6 +33,8 @@ import android.view.View;
		import android.view.ViewStub;
		import com.android.internal.logging.MetricsLogger;
		import com.android.systemui.R;
		import com.android.systemui.recents.events.EventBus;
		import com.android.systemui.recents.events.activity.AppWidgetProviderChangedEvent;
		import com.android.systemui.recents.misc.Console;
		import com.android.systemui.recents.misc.ReferenceCountedTrigger;
		import com.android.systemui.recents.misc.SystemServicesProxy;
		@@ -45,14 +47,12 @@ import com.android.systemui.recents.views.RecentsView;
		import com.android.systemui.recents.views.SystemBarScrimViews;
		import com.android.systemui.recents.views.ViewAnimation;

		import java.lang.ref.WeakReference;
		import java.util.ArrayList;

		/**
		* The main Recents activity that is started from AlternateRecentsComponent.
		*/
		public class RecentsActivity extends Activity implements RecentsView.RecentsViewCallbacks,
		RecentsAppWidgetHost.RecentsAppWidgetHostCallbacks {
		public class RecentsActivity extends Activity implements RecentsView.RecentsViewCallbacks {

		public final static int EVENT_BUS_PRIORITY = Recents.EVENT_BUS_PRIORITY + 1;

		@@ -322,6 +322,10 @@ public class RecentsActivity extends Activity implements RecentsView.RecentsView
		@Override
		public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		// Register this activity with the event bus
		EventBus.getDefault().register(this, EVENT_BUS_PRIORITY);

		// For the non-primary user, ensure that the SystemServicesProxy and configuration is
		// initialized
		RecentsTaskLoader.initialize(this);
		@@ -442,6 +446,7 @@ public class RecentsActivity extends Activity implements RecentsView.RecentsView

		// Stop listening for widget package changes if there was one bound
		mAppWidgetHost.stopListening();
		EventBus.getDefault().unregister(this);
		}

		public void onEnterAnimationTriggered() {
		@@ -451,16 +456,12 @@ public class RecentsActivity extends Activity implements RecentsView.RecentsView
		mRecentsView.startEnterRecentsAnimation(ctx);

		if (mSearchWidgetInfo != null) {
		final WeakReference<RecentsAppWidgetHost.RecentsAppWidgetHostCallbacks> cbRef =
		new WeakReference<RecentsAppWidgetHost.RecentsAppWidgetHostCallbacks>(
		RecentsActivity.this);
		ctx.postAnimationTrigger.addLastDecrementRunnable(new Runnable() {
		@Override
		public void run() {
		// Start listening for widget package changes if there is one bound
		RecentsAppWidgetHost.RecentsAppWidgetHostCallbacks cb = cbRef.get();
		if (cb != null) {
		mAppWidgetHost.startListening(cb);
		if (mAppWidgetHost != null) {
		mAppWidgetHost.startListening();
		}
		}
		});
		@@ -577,10 +578,13 @@ public class RecentsActivity extends Activity implements RecentsView.RecentsView
		mAfterPauseRunnable = r;
		}

		/** RecentsAppWidgetHost.RecentsAppWidgetHostCallbacks Implementation **/
		/** EventBus events **/

		@Override
		public void refreshSearchWidgetView() {
		public final void onBusEvent(AppWidgetProviderChangedEvent event) {
		refreshSearchWidgetView();
		}

		private void refreshSearchWidgetView() {
		if (mSearchWidgetInfo != null) {
		SystemServicesProxy ssp = RecentsTaskLoader.getInstance().getSystemServicesProxy();
		int searchWidgetId = ssp.getSearchAppWidgetId(this);

packages/SystemUI/src/com/android/systemui/recents/RecentsAppWidgetHost.java

+6 −13

Original line number	Diff line number	Diff line
		@@ -20,24 +20,19 @@ import android.appwidget.AppWidgetHost;
		import android.appwidget.AppWidgetHostView;
		import android.appwidget.AppWidgetProviderInfo;
		import android.content.Context;
		import com.android.systemui.recents.events.EventBus;
		import com.android.systemui.recents.events.activity.AppWidgetProviderChangedEvent;

		/** Our special app widget host for the Search widget */
		public class RecentsAppWidgetHost extends AppWidgetHost {

		/* Callbacks to notify when an app package changes */
		interface RecentsAppWidgetHostCallbacks {
		void refreshSearchWidgetView();
		}

		RecentsAppWidgetHostCallbacks mCb;
		boolean mIsListening;

		public RecentsAppWidgetHost(Context context, int hostId) {
		super(context, hostId);
		}

		public void startListening(RecentsAppWidgetHostCallbacks cb) {
		mCb = cb;
		public void startListening() {
		if (!mIsListening) {
		mIsListening = true;
		super.startListening();
		@@ -47,11 +42,9 @@ public class RecentsAppWidgetHost extends AppWidgetHost {
		@Override
		public void stopListening() {
		if (mIsListening) {
		mIsListening = false;
		super.stopListening();
		}
		// Ensure that we release any references to the callbacks
		mCb = null;
		mIsListening = false;
		}

		@Override
		@@ -66,8 +59,8 @@ public class RecentsAppWidgetHost extends AppWidgetHost {
		@Override
		protected void onProviderChanged(int appWidgetId, AppWidgetProviderInfo appWidgetInfo) {
		super.onProviderChanged(appWidgetId, appWidgetInfo);
		if (mIsListening && mCb != null) {
		mCb.refreshSearchWidgetView();
		if (mIsListening) {
		EventBus.getDefault().send(new AppWidgetProviderChangedEvent());
		}
		}
		}

packages/SystemUI/src/com/android/systemui/recents/events/activity/AppWidgetProviderChangedEvent.java

0 → 100644

+28 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2015 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.systemui.recents.events.activity;

		import com.android.systemui.recents.RecentsAppWidgetHost;
		import com.android.systemui.recents.events.EventBus;

		/**
		* This is sent by the {@link RecentsAppWidgetHost} whenever the search provider widget changes, and
		* subscribers can update accordingly.
		*/
		public class AppWidgetProviderChangedEvent extends EventBus.Event {
		// Simple event
		}