| /* |
| * 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.systemui; |
| |
| import android.content.Context; |
| import android.support.test.InstrumentationRegistry; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.MessageQueue; |
| import org.junit.Before; |
| |
| /** |
| * Base class that does System UI specific setup. |
| */ |
| public class SysuiTestCase { |
| |
| private Handler mHandler; |
| protected Context mContext; |
| |
| @Before |
| public void SysuiSetup() throws Exception { |
| mContext = InstrumentationRegistry.getTargetContext(); |
| } |
| |
| protected Context getContext() { |
| return mContext; |
| } |
| |
| protected void waitForIdleSync() { |
| if (mHandler == null) { |
| mHandler = new Handler(Looper.getMainLooper()); |
| } |
| waitForIdleSync(mHandler); |
| } |
| |
| protected void waitForIdleSync(Handler h) { |
| validateThread(h.getLooper()); |
| Idler idler = new Idler(null); |
| h.getLooper().getQueue().addIdleHandler(idler); |
| // Ensure we are non-idle, so the idle handler can run. |
| h.post(new EmptyRunnable()); |
| idler.waitForIdle(); |
| } |
| |
| private static final void validateThread(Looper l) { |
| if (Looper.myLooper() == l) { |
| throw new RuntimeException( |
| "This method can not be called from the looper being synced"); |
| } |
| } |
| |
| public static final class EmptyRunnable implements Runnable { |
| public void run() { |
| } |
| } |
| |
| public static final class Idler implements MessageQueue.IdleHandler { |
| private final Runnable mCallback; |
| private boolean mIdle; |
| |
| public Idler(Runnable callback) { |
| mCallback = callback; |
| mIdle = false; |
| } |
| |
| @Override |
| public boolean queueIdle() { |
| if (mCallback != null) { |
| mCallback.run(); |
| } |
| synchronized (this) { |
| mIdle = true; |
| notifyAll(); |
| } |
| return false; |
| } |
| |
| public void waitForIdle() { |
| synchronized (this) { |
| while (!mIdle) { |
| try { |
| wait(); |
| } catch (InterruptedException e) { |
| } |
| } |
| } |
| } |
| } |
| } |