| /* |
| * Copyright (C) 2017 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.server.wm; |
| |
| import android.os.RemoteCallbackList; |
| import android.os.RemoteException; |
| import android.util.SparseArray; |
| import android.view.IWallpaperVisibilityListener; |
| |
| /** |
| * Manages and trigger wallpaper visibility listeners. |
| */ |
| class WallpaperVisibilityListeners { |
| |
| /** |
| * A map of displayIds and its listeners. |
| */ |
| private final SparseArray<RemoteCallbackList<IWallpaperVisibilityListener>> mDisplayListeners = |
| new SparseArray<>(); |
| |
| void registerWallpaperVisibilityListener(IWallpaperVisibilityListener listener, |
| int displayId) { |
| RemoteCallbackList<IWallpaperVisibilityListener> listeners = |
| mDisplayListeners.get(displayId); |
| if (listeners == null) { |
| listeners = new RemoteCallbackList<>(); |
| mDisplayListeners.append(displayId, listeners); |
| } |
| listeners.register(listener); |
| } |
| |
| void unregisterWallpaperVisibilityListener(IWallpaperVisibilityListener listener, |
| int displayId) { |
| RemoteCallbackList<IWallpaperVisibilityListener> listeners = |
| mDisplayListeners.get(displayId); |
| if (listeners == null) { |
| return; |
| } |
| listeners.unregister(listener); |
| } |
| |
| void notifyWallpaperVisibilityChanged(DisplayContent displayContent) { |
| final int displayId = displayContent.getDisplayId(); |
| final boolean visible = displayContent.mWallpaperController.isWallpaperVisible(); |
| RemoteCallbackList<IWallpaperVisibilityListener> displayListeners = |
| mDisplayListeners.get(displayId); |
| |
| // No listeners for this display. |
| if (displayListeners == null) { |
| return; |
| } |
| |
| int i = displayListeners.beginBroadcast(); |
| while (i > 0) { |
| i--; |
| IWallpaperVisibilityListener listener = displayListeners.getBroadcastItem(i); |
| try { |
| listener.onWallpaperVisibilityChanged(visible, displayId); |
| } catch (RemoteException e) { |
| // Nothing to do in here, RemoteCallbackListener will clean it up. |
| } |
| } |
| displayListeners.finishBroadcast(); |
| } |
| } |