| /* |
| * Copyright (C) 2019 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.app.Activity; |
| import android.app.Application; |
| import android.app.Service; |
| import android.content.ContentProvider; |
| import android.content.Context; |
| import android.content.Intent; |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| import androidx.core.app.AppComponentFactory; |
| |
| import javax.inject.Inject; |
| |
| /** |
| * Implementation of AppComponentFactory that injects into constructors. |
| * |
| * This class sets up dependency injection when creating our application. |
| * |
| * Services support dependency injection into their constructors. |
| * |
| * ContentProviders support injection into member variables - _not_ constructors. |
| */ |
| public class SystemUIAppComponentFactory extends AppComponentFactory { |
| |
| private static final String TAG = "AppComponentFactory"; |
| @Inject |
| public ContextComponentHelper mComponentHelper; |
| |
| public SystemUIAppComponentFactory() { |
| super(); |
| } |
| |
| @NonNull |
| @Override |
| public Application instantiateApplicationCompat( |
| @NonNull ClassLoader cl, @NonNull String className) |
| throws InstantiationException, IllegalAccessException, ClassNotFoundException { |
| Application app = super.instantiateApplicationCompat(cl, className); |
| if (app instanceof ContextInitializer) { |
| ((ContextInitializer) app).setContextAvailableCallback( |
| context -> { |
| SystemUIFactory.createFromConfig(context); |
| SystemUIFactory.getInstance().getRootComponent().inject( |
| SystemUIAppComponentFactory.this); |
| } |
| ); |
| } |
| |
| return app; |
| } |
| |
| @NonNull |
| @Override |
| public ContentProvider instantiateProviderCompat( |
| @NonNull ClassLoader cl, @NonNull String className) |
| throws InstantiationException, IllegalAccessException, ClassNotFoundException { |
| |
| ContentProvider contentProvider = super.instantiateProviderCompat(cl, className); |
| if (contentProvider instanceof ContextInitializer) { |
| ((ContextInitializer) contentProvider).setContextAvailableCallback( |
| context -> { |
| SystemUIFactory.createFromConfig(context); |
| SystemUIFactory.getInstance().getRootComponent().inject( |
| contentProvider); |
| } |
| ); |
| } |
| |
| return contentProvider; |
| } |
| |
| @NonNull |
| @Override |
| public Activity instantiateActivityCompat(@NonNull ClassLoader cl, @NonNull String className, |
| @Nullable Intent intent) |
| throws InstantiationException, IllegalAccessException, ClassNotFoundException { |
| Activity activity = mComponentHelper.resolveActivity(className); |
| if (activity != null) { |
| return activity; |
| } |
| return super.instantiateActivityCompat(cl, className, intent); |
| } |
| |
| @NonNull |
| @Override |
| public Service instantiateServiceCompat( |
| @NonNull ClassLoader cl, @NonNull String className, Intent intent) |
| throws InstantiationException, IllegalAccessException, ClassNotFoundException { |
| if (mComponentHelper == null) { |
| // This shouldn't happen, but does when a device is freshly formatted. |
| // Bug filed against framework to take a look: http://b/141008541 |
| SystemUIFactory.getInstance().getRootComponent().inject( |
| SystemUIAppComponentFactory.this); |
| } |
| Service service = mComponentHelper.resolveService(className); |
| if (service != null) { |
| return service; |
| } |
| return super.instantiateServiceCompat(cl, className, intent); |
| } |
| |
| /** |
| * A callback that receives a Context when one is ready. |
| */ |
| public interface ContextAvailableCallback { |
| void onContextAvailable(Context context); |
| } |
| |
| /** |
| * Implemented in classes that get started by the system before a context is available. |
| */ |
| public interface ContextInitializer { |
| void setContextAvailableCallback(ContextAvailableCallback callback); |
| } |
| } |