| /* |
| * Copyright (C) 2019 The Dagger Authors. |
| * |
| * 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 dagger.hilt.android.internal.managers; |
| |
| import android.app.Activity; |
| import android.app.Application; |
| import androidx.activity.ComponentActivity; |
| import dagger.hilt.EntryPoint; |
| import dagger.hilt.EntryPoints; |
| import dagger.hilt.InstallIn; |
| import dagger.hilt.android.components.ActivityRetainedComponent; |
| import dagger.hilt.android.internal.builders.ActivityComponentBuilder; |
| import dagger.hilt.internal.GeneratedComponentManager; |
| |
| /** |
| * Do not use except in Hilt generated code! |
| * |
| * <p>A manager for the creation of components that live in the Activity. |
| * |
| * <p>Note: This class is not typed since its type in generated code is always <?> or <Object>. This |
| * is mainly due to the fact that we don't know the components at the time of generation, and |
| * because even the injector interface type is not a valid type if we have a hilt base class. |
| * |
| */ |
| public class ActivityComponentManager implements GeneratedComponentManager<Object> { |
| /** Entrypoint for {@link ActivityComponentBuilder}. */ |
| @EntryPoint |
| @InstallIn(ActivityRetainedComponent.class) |
| public interface ActivityComponentBuilderEntryPoint { |
| ActivityComponentBuilder activityComponentBuilder(); |
| } |
| |
| private volatile Object component; |
| private final Object componentLock = new Object(); |
| |
| protected final Activity activity; |
| |
| private final GeneratedComponentManager<ActivityRetainedComponent> |
| activityRetainedComponentManager; |
| |
| public ActivityComponentManager(Activity activity) { |
| this.activity = activity; |
| this.activityRetainedComponentManager = |
| new ActivityRetainedComponentManager((ComponentActivity) activity); |
| } |
| |
| @Override |
| public Object generatedComponent() { |
| if (component == null) { |
| synchronized (componentLock) { |
| if (component == null) { |
| component = createComponent(); |
| } |
| } |
| } |
| return component; |
| } |
| |
| protected Object createComponent() { |
| if (!(activity.getApplication() instanceof GeneratedComponentManager)) { |
| if (Application.class.equals(activity.getApplication().getClass())) { |
| throw new IllegalStateException( |
| "Hilt Activity must be attached to an @HiltAndroidApp Application. " |
| + "Did you forget to specify your Application's class name in your manifest's " |
| + "<application />'s android:name attribute?"); |
| } |
| throw new IllegalStateException( |
| "Hilt Activity must be attached to an @AndroidEntryPoint Application. Found: " |
| + activity.getApplication().getClass()); |
| } |
| |
| return EntryPoints.get( |
| activityRetainedComponentManager, ActivityComponentBuilderEntryPoint.class) |
| .activityComponentBuilder() |
| .activity(activity) |
| .build(); |
| } |
| } |