| /* |
| * Copyright (C) 2018 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 java.util.ArrayList; |
| |
| import javax.inject.Inject; |
| import javax.inject.Singleton; |
| |
| /** |
| * Created by {@link Dependency} on SystemUI startup. Add tasks which need to be executed only |
| * after all other dependencies have been created. |
| */ |
| @Singleton |
| public class InitController { |
| |
| /** |
| * If a task is added after all tasks are executed, then we've done something terribly wrong |
| */ |
| private boolean mTasksExecuted = false; |
| |
| private final ArrayList<Runnable> mTasks = new ArrayList<>(); |
| |
| @Inject |
| public InitController() { |
| } |
| |
| /** |
| * Add a task to be executed after {@link Dependency#start()} |
| * @param runnable the task to be executed |
| */ |
| public void addPostInitTask(Runnable runnable) { |
| if (mTasksExecuted) { |
| throw new IllegalStateException("post init tasks have already been executed!"); |
| } |
| mTasks.add(runnable); |
| } |
| |
| /** |
| * Run post-init tasks and remove them from the tasks list |
| */ |
| public void executePostInitTasks() { |
| while (!mTasks.isEmpty()) { |
| mTasks.remove(0).run(); |
| } |
| |
| mTasksExecuted = true; |
| } |
| } |