| /* |
| * Copyright (C) 2014 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.launcher3; |
| |
| import android.os.Handler; |
| import android.os.Looper; |
| |
| import java.util.List; |
| import java.util.concurrent.AbstractExecutorService; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * An executor service that executes its tasks on the main thread. |
| * |
| * Shutting down this executor is not supported. |
| */ |
| public class MainThreadExecutor extends AbstractExecutorService { |
| |
| private Handler mHandler = new Handler(Looper.getMainLooper()); |
| |
| @Override |
| public void execute(Runnable runnable) { |
| if (Looper.getMainLooper() == Looper.myLooper()) { |
| runnable.run(); |
| } else { |
| mHandler.post(runnable); |
| } |
| } |
| |
| /** |
| * Not supported and throws an exception when used. |
| */ |
| @Override |
| @Deprecated |
| public void shutdown() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| /** |
| * Not supported and throws an exception when used. |
| */ |
| @Override |
| @Deprecated |
| public List<Runnable> shutdownNow() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public boolean isShutdown() { |
| return false; |
| } |
| |
| @Override |
| public boolean isTerminated() { |
| return false; |
| } |
| |
| /** |
| * Not supported and throws an exception when used. |
| */ |
| @Override |
| @Deprecated |
| public boolean awaitTermination(long l, TimeUnit timeUnit) throws InterruptedException { |
| throw new UnsupportedOperationException(); |
| } |
| } |