1 /* 2 * Copyright (C) 2025 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.quickstep 18 19 import android.content.Context 20 import android.util.Log 21 import com.android.launcher3.dagger.ApplicationContext 22 import com.android.launcher3.dagger.LauncherAppSingleton 23 import com.android.launcher3.util.DaggerSingletonObject 24 import com.android.launcher3.util.Executors.MAIN_EXECUTOR 25 import com.android.quickstep.dagger.QuickstepBaseAppComponent 26 import javax.inject.Inject 27 28 @LauncherAppSingleton 29 class SystemDecorationChangeObserver @Inject constructor(@ApplicationContext context: Context) { 30 companion object { 31 private const val TAG = "SystemDecorationChangeObserver" 32 private const val DEBUG = false 33 34 @JvmStatic 35 val INSTANCE: DaggerSingletonObject<SystemDecorationChangeObserver> = 36 DaggerSingletonObject<SystemDecorationChangeObserver>( 37 QuickstepBaseAppComponent::getSystemDecorationChangeObserver 38 ) 39 } 40 41 interface DisplayDecorationListener { onDisplayAddSystemDecorationsnull42 fun onDisplayAddSystemDecorations(displayId: Int) 43 44 fun onDisplayRemoved(displayId: Int) 45 46 fun onDisplayRemoveSystemDecorations(displayId: Int) 47 } 48 49 fun notifyAddSystemDecorations(displayId: Int) { 50 if (DEBUG) Log.d(TAG, "SystemDecorationAdded: $displayId") 51 for (listener in mDisplayDecorationListeners) { 52 MAIN_EXECUTOR.execute { listener.onDisplayAddSystemDecorations(displayId) } 53 } 54 } 55 notifyOnDisplayRemovednull56 fun notifyOnDisplayRemoved(displayId: Int) { 57 if (DEBUG) Log.d(TAG, "displayRemoved: $displayId") 58 for (listener in mDisplayDecorationListeners) { 59 MAIN_EXECUTOR.execute { listener.onDisplayRemoved(displayId) } 60 } 61 } 62 notifyDisplayRemoveSystemDecorationsnull63 fun notifyDisplayRemoveSystemDecorations(displayId: Int) { 64 if (DEBUG) Log.d(TAG, "SystemDecorationRemoved: $displayId") 65 for (listener in mDisplayDecorationListeners) { 66 MAIN_EXECUTOR.execute { listener.onDisplayRemoveSystemDecorations(displayId) } 67 } 68 } 69 70 private val mDisplayDecorationListeners = ArrayList<DisplayDecorationListener>() 71 registerDisplayDecorationListenernull72 fun registerDisplayDecorationListener(listener: DisplayDecorationListener) { 73 if (DEBUG) Log.d(TAG, "registerDisplayDecorationListener") 74 mDisplayDecorationListeners.add(listener) 75 } 76 unregisterDisplayDecorationListenernull77 fun unregisterDisplayDecorationListener(listener: DisplayDecorationListener) { 78 if (DEBUG) Log.d(TAG, "unregisterDisplayDecorationListener") 79 mDisplayDecorationListeners.remove(listener) 80 } 81 } 82