| /* |
| * 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.systemui; |
| |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.util.Log; |
| import android.view.IDockedStackListener; |
| import android.view.WindowManagerGlobal; |
| |
| import java.lang.ref.WeakReference; |
| import java.util.ArrayList; |
| import java.util.function.Consumer; |
| |
| /** |
| * Utility wrapper to listen for whether or not a docked stack exists, to be |
| * used for things like the different overview icon in that mode. |
| */ |
| public class DockedStackExistsListener { |
| |
| private static final String TAG = "DockedStackExistsListener"; |
| |
| private static ArrayList<WeakReference<Consumer<Boolean>>> sCallbacks = new ArrayList<>(); |
| private static boolean mLastExists; |
| |
| static { |
| try { |
| WindowManagerGlobal.getWindowManagerService().registerDockedStackListener( |
| new IDockedStackListener.Stub() { |
| @Override |
| public void onDividerVisibilityChanged(boolean b) throws RemoteException { |
| |
| } |
| |
| @Override |
| public void onDockedStackExistsChanged(boolean exists) |
| throws RemoteException { |
| DockedStackExistsListener.onDockedStackExistsChanged(exists); |
| } |
| |
| @Override |
| public void onDockedStackMinimizedChanged(boolean b, long l, boolean b1) |
| throws RemoteException { |
| |
| } |
| |
| @Override |
| public void onAdjustedForImeChanged(boolean b, long l) |
| throws RemoteException { |
| |
| } |
| |
| @Override |
| public void onDockSideChanged(int i) throws RemoteException { |
| |
| } |
| }); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Failed registering docked stack exists listener", e); |
| } |
| } |
| |
| |
| private static void onDockedStackExistsChanged(boolean exists) { |
| mLastExists = exists; |
| synchronized (sCallbacks) { |
| sCallbacks.removeIf(wf -> { |
| Consumer<Boolean> l = wf.get(); |
| if (l != null) l.accept(exists); |
| return l == null; |
| }); |
| } |
| } |
| |
| public static void register(Consumer<Boolean> callback) { |
| callback.accept(mLastExists); |
| synchronized (sCallbacks) { |
| sCallbacks.add(new WeakReference<>(callback)); |
| } |
| } |
| } |