packages/SystemUI/src/com/android/systemui/statusbar/CommandQueue.java - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2010 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.statusbar;

 import android.content.ComponentName;
 import android.graphics.Rect;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.Looper;
 import android.os.Message;
 import android.support.annotation.VisibleForTesting;
 import android.util.Pair;

 import com.android.internal.os.SomeArgs;
 import com.android.internal.statusbar.IStatusBar;
 import com.android.internal.statusbar.StatusBarIcon;
 import com.android.systemui.SystemUI;

 import java.util.ArrayList;

 /**
  * This class takes the functions from IStatusBar that come in on
  * binder pool threads and posts messages to get them onto the main
  * thread, and calls onto Callbacks.  It also takes care of
  * coalescing these calls so they don't stack up.  For the calls
  * are coalesced, note that they are all idempotent.
  */
 public class CommandQueue extends IStatusBar.Stub {
     private static final int INDEX_MASK = 0xffff;
     private static final int MSG_SHIFT  = 16;
     private static final int MSG_MASK   = 0xffff << MSG_SHIFT;

     private static final int OP_SET_ICON    = 1;
     private static final int OP_REMOVE_ICON = 2;

     private static final int MSG_ICON                          = 1 << MSG_SHIFT;
     private static final int MSG_DISABLE                       = 2 << MSG_SHIFT;
     private static final int MSG_EXPAND_NOTIFICATIONS          = 3 << MSG_SHIFT;
     private static final int MSG_COLLAPSE_PANELS               = 4 << MSG_SHIFT;
     private static final int MSG_EXPAND_SETTINGS               = 5 << MSG_SHIFT;
     private static final int MSG_SET_SYSTEMUI_VISIBILITY       = 6 << MSG_SHIFT;
     private static final int MSG_TOP_APP_WINDOW_CHANGED        = 7 << MSG_SHIFT;
     private static final int MSG_SHOW_IME_BUTTON               = 8 << MSG_SHIFT;
     private static final int MSG_TOGGLE_RECENT_APPS            = 9 << MSG_SHIFT;
     private static final int MSG_PRELOAD_RECENT_APPS           = 10 << MSG_SHIFT;
     private static final int MSG_CANCEL_PRELOAD_RECENT_APPS    = 11 << MSG_SHIFT;
     private static final int MSG_SET_WINDOW_STATE              = 12 << MSG_SHIFT;
     private static final int MSG_SHOW_RECENT_APPS              = 13 << MSG_SHIFT;
     private static final int MSG_HIDE_RECENT_APPS              = 14 << MSG_SHIFT;
     private static final int MSG_SHOW_SCREEN_PIN_REQUEST       = 18 << MSG_SHIFT;
     private static final int MSG_APP_TRANSITION_PENDING        = 19 << MSG_SHIFT;
     private static final int MSG_APP_TRANSITION_CANCELLED      = 20 << MSG_SHIFT;
     private static final int MSG_APP_TRANSITION_STARTING       = 21 << MSG_SHIFT;
     private static final int MSG_ASSIST_DISCLOSURE             = 22 << MSG_SHIFT;
     private static final int MSG_START_ASSIST                  = 23 << MSG_SHIFT;
     private static final int MSG_CAMERA_LAUNCH_GESTURE         = 24 << MSG_SHIFT;
     private static final int MSG_TOGGLE_KEYBOARD_SHORTCUTS     = 25 << MSG_SHIFT;
     private static final int MSG_SHOW_TV_PICTURE_IN_PICTURE_MENU = 26 << MSG_SHIFT;
     private static final int MSG_ADD_QS_TILE                   = 27 << MSG_SHIFT;
     private static final int MSG_REMOVE_QS_TILE                = 28 << MSG_SHIFT;
     private static final int MSG_CLICK_QS_TILE                 = 29 << MSG_SHIFT;
     private static final int MSG_TOGGLE_APP_SPLIT_SCREEN       = 30 << MSG_SHIFT;
     private static final int MSG_APP_TRANSITION_FINISHED       = 31 << MSG_SHIFT;
     private static final int MSG_DISMISS_KEYBOARD_SHORTCUTS    = 32 << MSG_SHIFT;
     private static final int MSG_HANDLE_SYSNAV_KEY             = 33 << MSG_SHIFT;

     public static final int FLAG_EXCLUDE_NONE = 0;
     public static final int FLAG_EXCLUDE_SEARCH_PANEL = 1 << 0;
     public static final int FLAG_EXCLUDE_RECENTS_PANEL = 1 << 1;
     public static final int FLAG_EXCLUDE_NOTIFICATION_PANEL = 1 << 2;
     public static final int FLAG_EXCLUDE_INPUT_METHODS_PANEL = 1 << 3;
     public static final int FLAG_EXCLUDE_COMPAT_MODE_PANEL = 1 << 4;

     private static final String SHOW_IME_SWITCHER_KEY = "showImeSwitcherKey";

     private final Object mLock = new Object();
     private ArrayList<Callbacks> mCallbacks = new ArrayList<>();
     private Handler mHandler = new H(Looper.getMainLooper());
     private int mDisable1;
     private int mDisable2;

     /**
      * These methods are called back on the main thread.
      */
     public interface Callbacks {
         default void setIcon(String slot, StatusBarIcon icon) { }
         default void removeIcon(String slot) { }
         default void disable(int state1, int state2, boolean animate) { }
         default void animateExpandNotificationsPanel() { }
         default void animateCollapsePanels(int flags) { }
         default void animateExpandSettingsPanel(String obj) { }
         default void setSystemUiVisibility(int vis, int fullscreenStackVis,
                 int dockedStackVis, int mask, Rect fullscreenStackBounds, Rect dockedStackBounds) {
         }
         default void topAppWindowChanged(boolean visible) { }
         default void setImeWindowStatus(IBinder token, int vis, int backDisposition,
                 boolean showImeSwitcher) { }
         default void showRecentApps(boolean triggeredFromAltTab, boolean fromHome) { }
         default void hideRecentApps(boolean triggeredFromAltTab, boolean triggeredFromHomeKey) { }
         default void toggleRecentApps() { }
         default void toggleSplitScreen() { }
         default void preloadRecentApps() { }
         default void dismissKeyboardShortcutsMenu() { }
         default void toggleKeyboardShortcutsMenu(int deviceId) { }
         default void cancelPreloadRecentApps() { }
         default void setWindowState(int window, int state) { }
         default void showScreenPinningRequest(int taskId) { }
         default void appTransitionPending(boolean forced) { }
         default void appTransitionCancelled() { }
         default void appTransitionStarting(long startTime, long duration, boolean forced) { }
         default void appTransitionFinished() { }
         default void showAssistDisclosure() { }
         default void startAssist(Bundle args) { }
         default void onCameraLaunchGestureDetected(int source) { }
         default void showTvPictureInPictureMenu() { }

         default void addQsTile(ComponentName tile) { }
         default void remQsTile(ComponentName tile) { }
         default void clickTile(ComponentName tile) { }

         default void handleSystemNavigationKey(int arg1) { }
     }

     @VisibleForTesting
     protected CommandQueue() {
     }

     public void addCallbacks(Callbacks callbacks) {
         mCallbacks.add(callbacks);
         callbacks.disable(mDisable1, mDisable2, false /* animate */);
     }

     public void removeCallbacks(Callbacks callbacks) {
         mCallbacks.remove(callbacks);
     }

     public void setIcon(String slot, StatusBarIcon icon) {
         synchronized (mLock) {
             // don't coalesce these
             mHandler.obtainMessage(MSG_ICON, OP_SET_ICON, 0,
                     new Pair<String, StatusBarIcon>(slot, icon)).sendToTarget();
         }
     }

     public void removeIcon(String slot) {
         synchronized (mLock) {
             // don't coalesce these
             mHandler.obtainMessage(MSG_ICON, OP_REMOVE_ICON, 0, slot).sendToTarget();
         }
     }

     public void disable(int state1, int state2) {
         synchronized (mLock) {
             mDisable1 = state1;
             mDisable2 = state2;
             mHandler.removeMessages(MSG_DISABLE);
             mHandler.obtainMessage(MSG_DISABLE, state1, state2, null).sendToTarget();
         }
     }

     public void animateExpandNotificationsPanel() {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_EXPAND_NOTIFICATIONS);
             mHandler.sendEmptyMessage(MSG_EXPAND_NOTIFICATIONS);
         }
     }

     public void animateCollapsePanels() {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_COLLAPSE_PANELS);
             mHandler.obtainMessage(MSG_COLLAPSE_PANELS, 0, 0).sendToTarget();
         }
     }

     public void animateCollapsePanels(int flags) {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_COLLAPSE_PANELS);
             mHandler.obtainMessage(MSG_COLLAPSE_PANELS, flags, 0).sendToTarget();
         }
     }

     public void animateExpandSettingsPanel(String subPanel) {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_EXPAND_SETTINGS);
             mHandler.obtainMessage(MSG_EXPAND_SETTINGS, subPanel).sendToTarget();
         }
     }

     public void setSystemUiVisibility(int vis, int fullscreenStackVis, int dockedStackVis,
             int mask, Rect fullscreenStackBounds, Rect dockedStackBounds) {
         synchronized (mLock) {
             // Don't coalesce these, since it might have one time flags set such as
             // STATUS_BAR_UNHIDE which might get lost.
             SomeArgs args = SomeArgs.obtain();
             args.argi1 = vis;
             args.argi2 = fullscreenStackVis;
             args.argi3 = dockedStackVis;
             args.argi4 = mask;
             args.arg1 = fullscreenStackBounds;
             args.arg2 = dockedStackBounds;
             mHandler.obtainMessage(MSG_SET_SYSTEMUI_VISIBILITY, args).sendToTarget();
         }
     }

     public void topAppWindowChanged(boolean menuVisible) {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_TOP_APP_WINDOW_CHANGED);
             mHandler.obtainMessage(MSG_TOP_APP_WINDOW_CHANGED, menuVisible ? 1 : 0, 0,
                     null).sendToTarget();
         }
     }

     public void setImeWindowStatus(IBinder token, int vis, int backDisposition,
             boolean showImeSwitcher) {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_SHOW_IME_BUTTON);
             Message m = mHandler.obtainMessage(MSG_SHOW_IME_BUTTON, vis, backDisposition, token);
             m.getData().putBoolean(SHOW_IME_SWITCHER_KEY, showImeSwitcher);
             m.sendToTarget();
         }
     }

     public void showRecentApps(boolean triggeredFromAltTab, boolean fromHome) {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_SHOW_RECENT_APPS);
             mHandler.obtainMessage(MSG_SHOW_RECENT_APPS,
                     triggeredFromAltTab ? 1 : 0, fromHome ? 1 : 0, null).sendToTarget();
         }
     }

     public void hideRecentApps(boolean triggeredFromAltTab, boolean triggeredFromHomeKey) {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_HIDE_RECENT_APPS);
             mHandler.obtainMessage(MSG_HIDE_RECENT_APPS,
                     triggeredFromAltTab ? 1 : 0, triggeredFromHomeKey ? 1 : 0,
                     null).sendToTarget();
         }
     }

     public void toggleSplitScreen() {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_TOGGLE_APP_SPLIT_SCREEN);
             mHandler.obtainMessage(MSG_TOGGLE_APP_SPLIT_SCREEN, 0, 0, null).sendToTarget();
         }
     }

     public void toggleRecentApps() {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_TOGGLE_RECENT_APPS);
             mHandler.obtainMessage(MSG_TOGGLE_RECENT_APPS, 0, 0, null).sendToTarget();
         }
     }

     public void preloadRecentApps() {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_PRELOAD_RECENT_APPS);
             mHandler.obtainMessage(MSG_PRELOAD_RECENT_APPS, 0, 0, null).sendToTarget();
         }
     }

     public void cancelPreloadRecentApps() {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_CANCEL_PRELOAD_RECENT_APPS);
             mHandler.obtainMessage(MSG_CANCEL_PRELOAD_RECENT_APPS, 0, 0, null).sendToTarget();
         }
     }

     @Override
     public void dismissKeyboardShortcutsMenu() {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_DISMISS_KEYBOARD_SHORTCUTS);
             mHandler.obtainMessage(MSG_DISMISS_KEYBOARD_SHORTCUTS).sendToTarget();
         }
     }

     @Override
     public void toggleKeyboardShortcutsMenu(int deviceId) {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_TOGGLE_KEYBOARD_SHORTCUTS);
             mHandler.obtainMessage(MSG_TOGGLE_KEYBOARD_SHORTCUTS, deviceId, 0).sendToTarget();
         }
     }

     @Override
     public void showTvPictureInPictureMenu() {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_SHOW_TV_PICTURE_IN_PICTURE_MENU);
             mHandler.obtainMessage(MSG_SHOW_TV_PICTURE_IN_PICTURE_MENU).sendToTarget();
         }
     }

     public void setWindowState(int window, int state) {
         synchronized (mLock) {
             // don't coalesce these
             mHandler.obtainMessage(MSG_SET_WINDOW_STATE, window, state, null).sendToTarget();
         }
     }

     public void showScreenPinningRequest(int taskId) {
         synchronized (mLock) {
             mHandler.obtainMessage(MSG_SHOW_SCREEN_PIN_REQUEST, taskId, 0, null)
                     .sendToTarget();
         }
     }

     public void appTransitionPending() {
         appTransitionPending(false /* forced */);
     }

     public void appTransitionPending(boolean forced) {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_APP_TRANSITION_PENDING);
             mHandler.obtainMessage(MSG_APP_TRANSITION_PENDING, forced ? 1 : 0, 0).sendToTarget();
         }
     }

     public void appTransitionCancelled() {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_APP_TRANSITION_CANCELLED);
             mHandler.sendEmptyMessage(MSG_APP_TRANSITION_CANCELLED);
         }
     }

     public void appTransitionStarting(long startTime, long duration) {
         appTransitionStarting(startTime, duration, false /* forced */);
     }

     public void appTransitionStarting(long startTime, long duration, boolean forced) {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_APP_TRANSITION_STARTING);
             mHandler.obtainMessage(MSG_APP_TRANSITION_STARTING, forced ? 1 : 0, 0,
                     Pair.create(startTime, duration)).sendToTarget();
         }
     }

     @Override
     public void appTransitionFinished() {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_APP_TRANSITION_FINISHED);
             mHandler.sendEmptyMessage(MSG_APP_TRANSITION_FINISHED);
         }
     }

     public void showAssistDisclosure() {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_ASSIST_DISCLOSURE);
             mHandler.obtainMessage(MSG_ASSIST_DISCLOSURE).sendToTarget();
         }
     }

     public void startAssist(Bundle args) {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_START_ASSIST);
             mHandler.obtainMessage(MSG_START_ASSIST, args).sendToTarget();
         }
     }

     @Override
     public void onCameraLaunchGestureDetected(int source) {
         synchronized (mLock) {
             mHandler.removeMessages(MSG_CAMERA_LAUNCH_GESTURE);
             mHandler.obtainMessage(MSG_CAMERA_LAUNCH_GESTURE, source, 0).sendToTarget();
         }
     }

     @Override
     public void addQsTile(ComponentName tile) {
         synchronized (mLock) {
             mHandler.obtainMessage(MSG_ADD_QS_TILE, tile).sendToTarget();
         }
     }

     @Override
     public void remQsTile(ComponentName tile) {
         synchronized (mLock) {
             mHandler.obtainMessage(MSG_REMOVE_QS_TILE, tile).sendToTarget();
         }
     }

     @Override
     public void clickQsTile(ComponentName tile) {
         synchronized (mLock) {
             mHandler.obtainMessage(MSG_CLICK_QS_TILE, tile).sendToTarget();
         }
     }

     @Override
     public void handleSystemNavigationKey(int key) {
         synchronized (mLock) {
             mHandler.obtainMessage(MSG_HANDLE_SYSNAV_KEY, key, 0).sendToTarget();
         }
     }

     private final class H extends Handler {
         private H(Looper l) {
             super(l);
         }

         public void handleMessage(Message msg) {
             final int what = msg.what & MSG_MASK;
             switch (what) {
                 case MSG_ICON: {
                     switch (msg.arg1) {
                         case OP_SET_ICON: {
                             Pair<String, StatusBarIcon> p = (Pair<String, StatusBarIcon>) msg.obj;
                             for (int i = 0; i < mCallbacks.size(); i++) {
                                 mCallbacks.get(i).setIcon(p.first, p.second);
                             }
                             break;
                         }
                         case OP_REMOVE_ICON:
                             for (int i = 0; i < mCallbacks.size(); i++) {
                                 mCallbacks.get(i).removeIcon((String) msg.obj);
                             }
                             break;
                     }
                     break;
                 }
                 case MSG_DISABLE:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).disable(msg.arg1, msg.arg2, true /* animate */);
                     }
                     break;
                 case MSG_EXPAND_NOTIFICATIONS:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).animateExpandNotificationsPanel();
                     }
                     break;
                 case MSG_COLLAPSE_PANELS:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).animateCollapsePanels(msg.arg1);
                     }
                     break;
                 case MSG_EXPAND_SETTINGS:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).animateExpandSettingsPanel((String) msg.obj);
                     }
                     break;
                 case MSG_SET_SYSTEMUI_VISIBILITY:
                     SomeArgs args = (SomeArgs) msg.obj;
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).setSystemUiVisibility(args.argi1, args.argi2, args.argi3,
                                 args.argi4, (Rect) args.arg1, (Rect) args.arg2);
                     }
                     args.recycle();
                     break;
                 case MSG_TOP_APP_WINDOW_CHANGED:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).topAppWindowChanged(msg.arg1 != 0);
                     }
                     break;
                 case MSG_SHOW_IME_BUTTON:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).setImeWindowStatus((IBinder) msg.obj, msg.arg1, msg.arg2,
                                 msg.getData().getBoolean(SHOW_IME_SWITCHER_KEY, false));
                     }
                     break;
                 case MSG_SHOW_RECENT_APPS:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).showRecentApps(msg.arg1 != 0, msg.arg2 != 0);
                     }
                     break;
                 case MSG_HIDE_RECENT_APPS:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).hideRecentApps(msg.arg1 != 0, msg.arg2 != 0);
                     }
                     break;
                 case MSG_TOGGLE_RECENT_APPS:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).toggleRecentApps();
                     }
                     break;
                 case MSG_PRELOAD_RECENT_APPS:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).preloadRecentApps();
                     }
                     break;
                 case MSG_CANCEL_PRELOAD_RECENT_APPS:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).cancelPreloadRecentApps();
                     }
                     break;
                 case MSG_DISMISS_KEYBOARD_SHORTCUTS:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).dismissKeyboardShortcutsMenu();
                     }
                     break;
                 case MSG_TOGGLE_KEYBOARD_SHORTCUTS:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).toggleKeyboardShortcutsMenu(msg.arg1);
                     }
                     break;
                 case MSG_SET_WINDOW_STATE:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).setWindowState(msg.arg1, msg.arg2);
                     }
                     break;
                 case MSG_SHOW_SCREEN_PIN_REQUEST:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).showScreenPinningRequest(msg.arg1);
                     }
                     break;
                 case MSG_APP_TRANSITION_PENDING:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).appTransitionPending(msg.arg1 != 0);
                     }
                     break;
                 case MSG_APP_TRANSITION_CANCELLED:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).appTransitionCancelled();
                     }
                     break;
                 case MSG_APP_TRANSITION_STARTING:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         Pair<Long, Long> data = (Pair<Long, Long>) msg.obj;
                         mCallbacks.get(i).appTransitionStarting(data.first, data.second,
                                 msg.arg1 != 0);
                     }
                     break;
                 case MSG_APP_TRANSITION_FINISHED:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).appTransitionFinished();
                     }
                     break;
                 case MSG_ASSIST_DISCLOSURE:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).showAssistDisclosure();
                     }
                     break;
                 case MSG_START_ASSIST:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).startAssist((Bundle) msg.obj);
                     }
                     break;
                 case MSG_CAMERA_LAUNCH_GESTURE:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).onCameraLaunchGestureDetected(msg.arg1);
                     }
                     break;
                 case MSG_SHOW_TV_PICTURE_IN_PICTURE_MENU:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).showTvPictureInPictureMenu();
                     }
                     break;
                 case MSG_ADD_QS_TILE:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).addQsTile((ComponentName) msg.obj);
                     }
                     break;
                 case MSG_REMOVE_QS_TILE:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).remQsTile((ComponentName) msg.obj);
                     }
                     break;
                 case MSG_CLICK_QS_TILE:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).clickTile((ComponentName) msg.obj);
                     }
                     break;
                 case MSG_TOGGLE_APP_SPLIT_SCREEN:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).toggleSplitScreen();
                     }
                     break;
                 case MSG_HANDLE_SYSNAV_KEY:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).handleSystemNavigationKey(msg.arg1);
                     }
                     break;
             }
         }
     }

     // Need this class since CommandQueue already extends IStatusBar.Stub, so CommandQueueStart
     // is needed so it can extend SystemUI.
     public static class CommandQueueStart extends SystemUI {
         @Override
         public void start() {
             putComponent(CommandQueue.class, new CommandQueue());
         }
     }
 }
	/*
	* Copyright (C) 2010 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.statusbar;

	import android.content.ComponentName;
	import android.graphics.Rect;
	import android.os.Bundle;
	import android.os.Handler;
	import android.os.IBinder;
	import android.os.Looper;
	import android.os.Message;
	import android.support.annotation.VisibleForTesting;
	import android.util.Pair;

	import com.android.internal.os.SomeArgs;
	import com.android.internal.statusbar.IStatusBar;
	import com.android.internal.statusbar.StatusBarIcon;
	import com.android.systemui.SystemUI;

	import java.util.ArrayList;

	/**
	* This class takes the functions from IStatusBar that come in on
	* binder pool threads and posts messages to get them onto the main
	* thread, and calls onto Callbacks. It also takes care of
	* coalescing these calls so they don't stack up. For the calls
	* are coalesced, note that they are all idempotent.
	*/
	public class CommandQueue extends IStatusBar.Stub {
	private static final int INDEX_MASK = 0xffff;
	private static final int MSG_SHIFT = 16;
	private static final int MSG_MASK = 0xffff << MSG_SHIFT;

	private static final int OP_SET_ICON = 1;
	private static final int OP_REMOVE_ICON = 2;

	private static final int MSG_ICON = 1 << MSG_SHIFT;
	private static final int MSG_DISABLE = 2 << MSG_SHIFT;
	private static final int MSG_EXPAND_NOTIFICATIONS = 3 << MSG_SHIFT;
	private static final int MSG_COLLAPSE_PANELS = 4 << MSG_SHIFT;
	private static final int MSG_EXPAND_SETTINGS = 5 << MSG_SHIFT;
	private static final int MSG_SET_SYSTEMUI_VISIBILITY = 6 << MSG_SHIFT;
	private static final int MSG_TOP_APP_WINDOW_CHANGED = 7 << MSG_SHIFT;
	private static final int MSG_SHOW_IME_BUTTON = 8 << MSG_SHIFT;
	private static final int MSG_TOGGLE_RECENT_APPS = 9 << MSG_SHIFT;
	private static final int MSG_PRELOAD_RECENT_APPS = 10 << MSG_SHIFT;
	private static final int MSG_CANCEL_PRELOAD_RECENT_APPS = 11 << MSG_SHIFT;
	private static final int MSG_SET_WINDOW_STATE = 12 << MSG_SHIFT;
	private static final int MSG_SHOW_RECENT_APPS = 13 << MSG_SHIFT;
	private static final int MSG_HIDE_RECENT_APPS = 14 << MSG_SHIFT;
	private static final int MSG_SHOW_SCREEN_PIN_REQUEST = 18 << MSG_SHIFT;
	private static final int MSG_APP_TRANSITION_PENDING = 19 << MSG_SHIFT;
	private static final int MSG_APP_TRANSITION_CANCELLED = 20 << MSG_SHIFT;
	private static final int MSG_APP_TRANSITION_STARTING = 21 << MSG_SHIFT;
	private static final int MSG_ASSIST_DISCLOSURE = 22 << MSG_SHIFT;
	private static final int MSG_START_ASSIST = 23 << MSG_SHIFT;
	private static final int MSG_CAMERA_LAUNCH_GESTURE = 24 << MSG_SHIFT;
	private static final int MSG_TOGGLE_KEYBOARD_SHORTCUTS = 25 << MSG_SHIFT;
	private static final int MSG_SHOW_TV_PICTURE_IN_PICTURE_MENU = 26 << MSG_SHIFT;
	private static final int MSG_ADD_QS_TILE = 27 << MSG_SHIFT;
	private static final int MSG_REMOVE_QS_TILE = 28 << MSG_SHIFT;
	private static final int MSG_CLICK_QS_TILE = 29 << MSG_SHIFT;
	private static final int MSG_TOGGLE_APP_SPLIT_SCREEN = 30 << MSG_SHIFT;
	private static final int MSG_APP_TRANSITION_FINISHED = 31 << MSG_SHIFT;
	private static final int MSG_DISMISS_KEYBOARD_SHORTCUTS = 32 << MSG_SHIFT;
	private static final int MSG_HANDLE_SYSNAV_KEY = 33 << MSG_SHIFT;

	public static final int FLAG_EXCLUDE_NONE = 0;
	public static final int FLAG_EXCLUDE_SEARCH_PANEL = 1 << 0;
	public static final int FLAG_EXCLUDE_RECENTS_PANEL = 1 << 1;
	public static final int FLAG_EXCLUDE_NOTIFICATION_PANEL = 1 << 2;
	public static final int FLAG_EXCLUDE_INPUT_METHODS_PANEL = 1 << 3;
	public static final int FLAG_EXCLUDE_COMPAT_MODE_PANEL = 1 << 4;

	private static final String SHOW_IME_SWITCHER_KEY = "showImeSwitcherKey";

	private final Object mLock = new Object();
	private ArrayList<Callbacks> mCallbacks = new ArrayList<>();
	private Handler mHandler = new H(Looper.getMainLooper());
	private int mDisable1;
	private int mDisable2;

	/**
	* These methods are called back on the main thread.
	*/
	public interface Callbacks {
	default void setIcon(String slot, StatusBarIcon icon) { }
	default void removeIcon(String slot) { }
	default void disable(int state1, int state2, boolean animate) { }
	default void animateExpandNotificationsPanel() { }
	default void animateCollapsePanels(int flags) { }
	default void animateExpandSettingsPanel(String obj) { }
	default void setSystemUiVisibility(int vis, int fullscreenStackVis,
	int dockedStackVis, int mask, Rect fullscreenStackBounds, Rect dockedStackBounds) {
	}
	default void topAppWindowChanged(boolean visible) { }
	default void setImeWindowStatus(IBinder token, int vis, int backDisposition,
	boolean showImeSwitcher) { }
	default void showRecentApps(boolean triggeredFromAltTab, boolean fromHome) { }
	default void hideRecentApps(boolean triggeredFromAltTab, boolean triggeredFromHomeKey) { }
	default void toggleRecentApps() { }
	default void toggleSplitScreen() { }
	default void preloadRecentApps() { }
	default void dismissKeyboardShortcutsMenu() { }
	default void toggleKeyboardShortcutsMenu(int deviceId) { }
	default void cancelPreloadRecentApps() { }
	default void setWindowState(int window, int state) { }
	default void showScreenPinningRequest(int taskId) { }
	default void appTransitionPending(boolean forced) { }
	default void appTransitionCancelled() { }
	default void appTransitionStarting(long startTime, long duration, boolean forced) { }
	default void appTransitionFinished() { }
	default void showAssistDisclosure() { }
	default void startAssist(Bundle args) { }
	default void onCameraLaunchGestureDetected(int source) { }
	default void showTvPictureInPictureMenu() { }

	default void addQsTile(ComponentName tile) { }
	default void remQsTile(ComponentName tile) { }
	default void clickTile(ComponentName tile) { }

	default void handleSystemNavigationKey(int arg1) { }
	}

	@VisibleForTesting
	protected CommandQueue() {
	}

	public void addCallbacks(Callbacks callbacks) {
	mCallbacks.add(callbacks);
	callbacks.disable(mDisable1, mDisable2, false /* animate */);
	}

	public void removeCallbacks(Callbacks callbacks) {
	mCallbacks.remove(callbacks);
	}

	public void setIcon(String slot, StatusBarIcon icon) {
	synchronized (mLock) {
	// don't coalesce these
	mHandler.obtainMessage(MSG_ICON, OP_SET_ICON, 0,
	new Pair<String, StatusBarIcon>(slot, icon)).sendToTarget();
	}
	}

	public void removeIcon(String slot) {
	synchronized (mLock) {
	// don't coalesce these
	mHandler.obtainMessage(MSG_ICON, OP_REMOVE_ICON, 0, slot).sendToTarget();
	}
	}

	public void disable(int state1, int state2) {
	synchronized (mLock) {
	mDisable1 = state1;
	mDisable2 = state2;
	mHandler.removeMessages(MSG_DISABLE);
	mHandler.obtainMessage(MSG_DISABLE, state1, state2, null).sendToTarget();
	}
	}

	public void animateExpandNotificationsPanel() {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_EXPAND_NOTIFICATIONS);
	mHandler.sendEmptyMessage(MSG_EXPAND_NOTIFICATIONS);
	}
	}

	public void animateCollapsePanels() {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_COLLAPSE_PANELS);
	mHandler.obtainMessage(MSG_COLLAPSE_PANELS, 0, 0).sendToTarget();
	}
	}

	public void animateCollapsePanels(int flags) {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_COLLAPSE_PANELS);
	mHandler.obtainMessage(MSG_COLLAPSE_PANELS, flags, 0).sendToTarget();
	}
	}

	public void animateExpandSettingsPanel(String subPanel) {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_EXPAND_SETTINGS);
	mHandler.obtainMessage(MSG_EXPAND_SETTINGS, subPanel).sendToTarget();
	}
	}

	public void setSystemUiVisibility(int vis, int fullscreenStackVis, int dockedStackVis,
	int mask, Rect fullscreenStackBounds, Rect dockedStackBounds) {
	synchronized (mLock) {
	// Don't coalesce these, since it might have one time flags set such as
	// STATUS_BAR_UNHIDE which might get lost.
	SomeArgs args = SomeArgs.obtain();
	args.argi1 = vis;
	args.argi2 = fullscreenStackVis;
	args.argi3 = dockedStackVis;
	args.argi4 = mask;
	args.arg1 = fullscreenStackBounds;
	args.arg2 = dockedStackBounds;
	mHandler.obtainMessage(MSG_SET_SYSTEMUI_VISIBILITY, args).sendToTarget();
	}
	}

	public void topAppWindowChanged(boolean menuVisible) {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_TOP_APP_WINDOW_CHANGED);
	mHandler.obtainMessage(MSG_TOP_APP_WINDOW_CHANGED, menuVisible ? 1 : 0, 0,
	null).sendToTarget();
	}
	}

	public void setImeWindowStatus(IBinder token, int vis, int backDisposition,
	boolean showImeSwitcher) {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_SHOW_IME_BUTTON);
	Message m = mHandler.obtainMessage(MSG_SHOW_IME_BUTTON, vis, backDisposition, token);
	m.getData().putBoolean(SHOW_IME_SWITCHER_KEY, showImeSwitcher);
	m.sendToTarget();
	}
	}

	public void showRecentApps(boolean triggeredFromAltTab, boolean fromHome) {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_SHOW_RECENT_APPS);
	mHandler.obtainMessage(MSG_SHOW_RECENT_APPS,
	triggeredFromAltTab ? 1 : 0, fromHome ? 1 : 0, null).sendToTarget();
	}
	}

	public void hideRecentApps(boolean triggeredFromAltTab, boolean triggeredFromHomeKey) {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_HIDE_RECENT_APPS);
	mHandler.obtainMessage(MSG_HIDE_RECENT_APPS,
	triggeredFromAltTab ? 1 : 0, triggeredFromHomeKey ? 1 : 0,
	null).sendToTarget();
	}
	}

	public void toggleSplitScreen() {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_TOGGLE_APP_SPLIT_SCREEN);
	mHandler.obtainMessage(MSG_TOGGLE_APP_SPLIT_SCREEN, 0, 0, null).sendToTarget();
	}
	}

	public void toggleRecentApps() {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_TOGGLE_RECENT_APPS);
	mHandler.obtainMessage(MSG_TOGGLE_RECENT_APPS, 0, 0, null).sendToTarget();
	}
	}

	public void preloadRecentApps() {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_PRELOAD_RECENT_APPS);
	mHandler.obtainMessage(MSG_PRELOAD_RECENT_APPS, 0, 0, null).sendToTarget();
	}
	}

	public void cancelPreloadRecentApps() {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_CANCEL_PRELOAD_RECENT_APPS);
	mHandler.obtainMessage(MSG_CANCEL_PRELOAD_RECENT_APPS, 0, 0, null).sendToTarget();
	}
	}

	@Override
	public void dismissKeyboardShortcutsMenu() {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_DISMISS_KEYBOARD_SHORTCUTS);
	mHandler.obtainMessage(MSG_DISMISS_KEYBOARD_SHORTCUTS).sendToTarget();
	}
	}

	@Override
	public void toggleKeyboardShortcutsMenu(int deviceId) {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_TOGGLE_KEYBOARD_SHORTCUTS);
	mHandler.obtainMessage(MSG_TOGGLE_KEYBOARD_SHORTCUTS, deviceId, 0).sendToTarget();
	}
	}

	@Override
	public void showTvPictureInPictureMenu() {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_SHOW_TV_PICTURE_IN_PICTURE_MENU);
	mHandler.obtainMessage(MSG_SHOW_TV_PICTURE_IN_PICTURE_MENU).sendToTarget();
	}
	}

	public void setWindowState(int window, int state) {
	synchronized (mLock) {
	// don't coalesce these
	mHandler.obtainMessage(MSG_SET_WINDOW_STATE, window, state, null).sendToTarget();
	}
	}

	public void showScreenPinningRequest(int taskId) {
	synchronized (mLock) {
	mHandler.obtainMessage(MSG_SHOW_SCREEN_PIN_REQUEST, taskId, 0, null)
	.sendToTarget();
	}
	}

	public void appTransitionPending() {
	appTransitionPending(false /* forced */);
	}

	public void appTransitionPending(boolean forced) {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_APP_TRANSITION_PENDING);
	mHandler.obtainMessage(MSG_APP_TRANSITION_PENDING, forced ? 1 : 0, 0).sendToTarget();
	}
	}

	public void appTransitionCancelled() {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_APP_TRANSITION_CANCELLED);
	mHandler.sendEmptyMessage(MSG_APP_TRANSITION_CANCELLED);
	}
	}

	public void appTransitionStarting(long startTime, long duration) {
	appTransitionStarting(startTime, duration, false /* forced */);
	}

	public void appTransitionStarting(long startTime, long duration, boolean forced) {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_APP_TRANSITION_STARTING);
	mHandler.obtainMessage(MSG_APP_TRANSITION_STARTING, forced ? 1 : 0, 0,
	Pair.create(startTime, duration)).sendToTarget();
	}
	}

	@Override
	public void appTransitionFinished() {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_APP_TRANSITION_FINISHED);
	mHandler.sendEmptyMessage(MSG_APP_TRANSITION_FINISHED);
	}
	}

	public void showAssistDisclosure() {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_ASSIST_DISCLOSURE);
	mHandler.obtainMessage(MSG_ASSIST_DISCLOSURE).sendToTarget();
	}
	}

	public void startAssist(Bundle args) {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_START_ASSIST);
	mHandler.obtainMessage(MSG_START_ASSIST, args).sendToTarget();
	}
	}

	@Override
	public void onCameraLaunchGestureDetected(int source) {
	synchronized (mLock) {
	mHandler.removeMessages(MSG_CAMERA_LAUNCH_GESTURE);
	mHandler.obtainMessage(MSG_CAMERA_LAUNCH_GESTURE, source, 0).sendToTarget();
	}
	}

	@Override
	public void addQsTile(ComponentName tile) {
	synchronized (mLock) {
	mHandler.obtainMessage(MSG_ADD_QS_TILE, tile).sendToTarget();
	}
	}

	@Override
	public void remQsTile(ComponentName tile) {
	synchronized (mLock) {
	mHandler.obtainMessage(MSG_REMOVE_QS_TILE, tile).sendToTarget();
	}
	}

	@Override
	public void clickQsTile(ComponentName tile) {
	synchronized (mLock) {
	mHandler.obtainMessage(MSG_CLICK_QS_TILE, tile).sendToTarget();
	}
	}

	@Override
	public void handleSystemNavigationKey(int key) {
	synchronized (mLock) {
	mHandler.obtainMessage(MSG_HANDLE_SYSNAV_KEY, key, 0).sendToTarget();
	}
	}

	private final class H extends Handler {
	private H(Looper l) {
	super(l);
	}

	public void handleMessage(Message msg) {
	final int what = msg.what & MSG_MASK;
	switch (what) {
	case MSG_ICON: {
	switch (msg.arg1) {
	case OP_SET_ICON: {
	Pair<String, StatusBarIcon> p = (Pair<String, StatusBarIcon>) msg.obj;
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).setIcon(p.first, p.second);
	}
	break;
	}
	case OP_REMOVE_ICON:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).removeIcon((String) msg.obj);
	}
	break;
	}
	break;
	}
	case MSG_DISABLE:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).disable(msg.arg1, msg.arg2, true /* animate */);
	}
	break;
	case MSG_EXPAND_NOTIFICATIONS:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).animateExpandNotificationsPanel();
	}
	break;
	case MSG_COLLAPSE_PANELS:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).animateCollapsePanels(msg.arg1);
	}
	break;
	case MSG_EXPAND_SETTINGS:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).animateExpandSettingsPanel((String) msg.obj);
	}
	break;
	case MSG_SET_SYSTEMUI_VISIBILITY:
	SomeArgs args = (SomeArgs) msg.obj;
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).setSystemUiVisibility(args.argi1, args.argi2, args.argi3,
	args.argi4, (Rect) args.arg1, (Rect) args.arg2);
	}
	args.recycle();
	break;
	case MSG_TOP_APP_WINDOW_CHANGED:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).topAppWindowChanged(msg.arg1 != 0);
	}
	break;
	case MSG_SHOW_IME_BUTTON:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).setImeWindowStatus((IBinder) msg.obj, msg.arg1, msg.arg2,
	msg.getData().getBoolean(SHOW_IME_SWITCHER_KEY, false));
	}
	break;
	case MSG_SHOW_RECENT_APPS:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).showRecentApps(msg.arg1 != 0, msg.arg2 != 0);
	}
	break;
	case MSG_HIDE_RECENT_APPS:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).hideRecentApps(msg.arg1 != 0, msg.arg2 != 0);
	}
	break;
	case MSG_TOGGLE_RECENT_APPS:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).toggleRecentApps();
	}
	break;
	case MSG_PRELOAD_RECENT_APPS:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).preloadRecentApps();
	}
	break;
	case MSG_CANCEL_PRELOAD_RECENT_APPS:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).cancelPreloadRecentApps();
	}
	break;
	case MSG_DISMISS_KEYBOARD_SHORTCUTS:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).dismissKeyboardShortcutsMenu();
	}
	break;
	case MSG_TOGGLE_KEYBOARD_SHORTCUTS:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).toggleKeyboardShortcutsMenu(msg.arg1);
	}
	break;
	case MSG_SET_WINDOW_STATE:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).setWindowState(msg.arg1, msg.arg2);
	}
	break;
	case MSG_SHOW_SCREEN_PIN_REQUEST:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).showScreenPinningRequest(msg.arg1);
	}
	break;
	case MSG_APP_TRANSITION_PENDING:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).appTransitionPending(msg.arg1 != 0);
	}
	break;
	case MSG_APP_TRANSITION_CANCELLED:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).appTransitionCancelled();
	}
	break;
	case MSG_APP_TRANSITION_STARTING:
	for (int i = 0; i < mCallbacks.size(); i++) {
	Pair<Long, Long> data = (Pair<Long, Long>) msg.obj;
	mCallbacks.get(i).appTransitionStarting(data.first, data.second,
	msg.arg1 != 0);
	}
	break;
	case MSG_APP_TRANSITION_FINISHED:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).appTransitionFinished();
	}
	break;
	case MSG_ASSIST_DISCLOSURE:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).showAssistDisclosure();
	}
	break;
	case MSG_START_ASSIST:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).startAssist((Bundle) msg.obj);
	}
	break;
	case MSG_CAMERA_LAUNCH_GESTURE:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).onCameraLaunchGestureDetected(msg.arg1);
	}
	break;
	case MSG_SHOW_TV_PICTURE_IN_PICTURE_MENU:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).showTvPictureInPictureMenu();
	}
	break;
	case MSG_ADD_QS_TILE:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).addQsTile((ComponentName) msg.obj);
	}
	break;
	case MSG_REMOVE_QS_TILE:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).remQsTile((ComponentName) msg.obj);
	}
	break;
	case MSG_CLICK_QS_TILE:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).clickTile((ComponentName) msg.obj);
	}
	break;
	case MSG_TOGGLE_APP_SPLIT_SCREEN:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).toggleSplitScreen();
	}
	break;
	case MSG_HANDLE_SYSNAV_KEY:
	for (int i = 0; i < mCallbacks.size(); i++) {
	mCallbacks.get(i).handleSystemNavigationKey(msg.arg1);
	}
	break;
	}
	}
	}

	// Need this class since CommandQueue already extends IStatusBar.Stub, so CommandQueueStart
	// is needed so it can extend SystemUI.
	public static class CommandQueueStart extends SystemUI {
	@Override
	public void start() {
	putComponent(CommandQueue.class, new CommandQueue());
	}
	}
	}