1 /* 2 * Copyright (C) 2023 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 package com.android.launcher3; 17 18 import android.app.Application; 19 20 import com.android.launcher3.dagger.DaggerLauncherAppComponent; 21 import com.android.launcher3.dagger.LauncherAppComponent; 22 import com.android.launcher3.dagger.LauncherBaseAppComponent; 23 import com.android.launcher3.util.TraceHelper; 24 25 /** 26 * Main application class for Launcher 27 */ 28 public class LauncherApplication extends Application { 29 30 private volatile LauncherBaseAppComponent mAppComponent; 31 @Override onCreate()32 public void onCreate() { 33 super.onCreate(); 34 MainProcessInitializer.initialize(this); 35 } 36 getAppComponent()37 public LauncherAppComponent getAppComponent() { 38 if (mAppComponent == null) { 39 synchronized (this) { 40 // Check for null again, as it may have been assigned on a different thread. This 41 // avoids holding synchronization locks everytime. 42 if (mAppComponent == null) { 43 // Initialize the dagger component on demand as content providers can get 44 // accessed before the Launcher application (b/36917845#comment4) 45 initDaggerComponent(DaggerLauncherAppComponent.builder() 46 .iconsDbName(LauncherFiles.APP_ICONS_DB)); 47 } 48 } 49 } 50 // Since supertype setters will return a supertype.builder and @Component.Builder types 51 // must not have any generic types. 52 // We need to cast mAppComponent to {@link LauncherAppComponent} since appContext() 53 // method is defined in the super class LauncherBaseComponent#Builder. 54 return (LauncherAppComponent) mAppComponent; 55 } 56 57 /** 58 * Init with the desired dagger component. 59 */ initDaggerComponent(LauncherBaseAppComponent.Builder componentBuilder)60 public void initDaggerComponent(LauncherBaseAppComponent.Builder componentBuilder) { 61 mAppComponent = componentBuilder 62 .appContext(this) 63 .setSafeModeEnabled(TraceHelper.allowIpcs( 64 "isSafeMode", () -> getPackageManager().isSafeMode())) 65 .build(); 66 } 67 } 68