| /* |
| * 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 dagger.hilt.internal.GeneratedComponentManager; |
| |
| /** |
| * Do not use except in Hilt generated code! |
| * |
| * <p>A manager for the creation of components that live in the Application. |
| */ |
| public final class ApplicationComponentManager implements GeneratedComponentManager<Object> { |
| private volatile Object component; |
| private final Object componentLock = new Object(); |
| private final ComponentSupplier componentCreator; |
| |
| public ApplicationComponentManager(ComponentSupplier componentCreator) { |
| this.componentCreator = componentCreator; |
| } |
| |
| @Override |
| public Object generatedComponent() { |
| if (component == null) { |
| synchronized (componentLock) { |
| if (component == null) { |
| component = componentCreator.get(); |
| } |
| } |
| } |
| return component; |
| } |
| } |