| /* |
| * Copyright (C) 2010 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 android.app.stubs; |
| |
| import android.app.Activity; |
| import android.content.pm.ActivityInfo; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import static org.junit.Assert.assertTrue; |
| |
| public class OrientationTestUtils { |
| /** |
| * Change the activity's orientation to something different and then switch back. This is used |
| * to trigger {@link Activity#onConfigurationChanged(android.content.res.Configuration)}. |
| * |
| * @param activity whose orientation will be changed and restored |
| */ |
| public static void toggleOrientation(Activity activity) { |
| final int[] orientations = getOrientations(activity); |
| activity.setRequestedOrientation(orientations[1]); |
| activity.setRequestedOrientation(orientations[0]); |
| } |
| |
| /** |
| * Switches the device's orientation from landscape to portrait or portrait to landscape. |
| * |
| * @param activity whose orientation will be changed |
| * @return original orientation |
| */ |
| public static void switchOrientation(final Activity activity) { |
| final int[] orientations = getOrientations(activity); |
| activity.setRequestedOrientation(orientations[1]); |
| } |
| |
| /** |
| * Returns original orientation and toggled orientation. |
| * @param activity whose orienetaion will be returned |
| * @return The first element is original orientation adn the second element is toggled |
| * orientation. |
| */ |
| private static int[] getOrientations(final Activity activity) { |
| final int originalOrientation = activity.getResources().getConfiguration().orientation; |
| final int newOrientation = originalOrientation == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT |
| ? ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE |
| : ActivityInfo.SCREEN_ORIENTATION_PORTRAIT; |
| return new int[] { originalOrientation, newOrientation }; |
| } |
| |
| /** |
| * Observer used in stub activities to wait for some event. |
| */ |
| public static class Observer { |
| private static final int TIMEOUT_SEC = 3; |
| private final AtomicReference<CountDownLatch> mLatch = new AtomicReference(); |
| |
| /** |
| * Starts observing event. |
| * The returned CountDownLatch will get activated when onObserved is invoked after this |
| * call. The method cannot be called multiple times unless reset() is invoked. |
| * @return CountDownLatch will get activated when onObserved is invoked after this call. |
| */ |
| public void startObserving() { |
| final CountDownLatch latch = new CountDownLatch(1); |
| assertTrue(mLatch.compareAndSet(null, latch)); |
| } |
| |
| /** |
| * Waits until onObserved is invoked. |
| */ |
| public void await() throws InterruptedException { |
| try { |
| assertTrue(mLatch.get().await(TIMEOUT_SEC, TimeUnit.SECONDS)); |
| } finally { |
| mLatch.set(null); |
| } |
| } |
| |
| /** |
| * Notifies an event is observed. |
| * If this method is invoked after startObserving, the returned CountDownLatch will get |
| * activated. Otherwise it does nothing. |
| */ |
| public void onObserved() { |
| final CountDownLatch latch = mLatch.get(); |
| if (latch != null) { |
| latch.countDown(); |
| } |
| } |
| } |
| } |