| /* |
| * Copyright (C) 2016 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 androidx.leanback.testutils; |
| |
| import static org.junit.Assert.fail; |
| |
| import android.app.Activity; |
| import android.view.View; |
| |
| public abstract class PollingCheck { |
| |
| private static final long TIME_SLICE = 250; |
| private long mTimeout = 5000; |
| |
| public abstract static class PollingCheckCondition { |
| public abstract boolean canProceed(); |
| |
| public boolean canPreProceed() { |
| return canProceed(); |
| } |
| } |
| |
| public PollingCheck() { |
| } |
| |
| public PollingCheck(long timeout) { |
| mTimeout = timeout; |
| } |
| |
| protected abstract boolean check(); |
| |
| protected boolean preCheck() { |
| return check(); |
| } |
| |
| public void run() { |
| if (preCheck()) { |
| return; |
| } |
| |
| long timeout = mTimeout; |
| while (timeout > 0) { |
| try { |
| Thread.sleep(TIME_SLICE); |
| } catch (InterruptedException e) { |
| fail("unexpected InterruptedException"); |
| } |
| |
| if (check()) { |
| return; |
| } |
| |
| timeout -= TIME_SLICE; |
| } |
| |
| fail("unexpected timeout"); |
| } |
| |
| public static void waitFor(final PollingCheckCondition condition) { |
| new PollingCheck() { |
| @Override |
| protected boolean check() { |
| return condition.canProceed(); |
| } |
| |
| @Override |
| protected boolean preCheck() { |
| return condition.canPreProceed(); |
| } |
| }.run(); |
| } |
| |
| public static void waitFor(long timeout, final PollingCheckCondition condition) { |
| new PollingCheck(timeout) { |
| @Override |
| protected boolean check() { |
| return condition.canProceed(); |
| } |
| }.run(); |
| } |
| |
| public static class ViewScreenPositionDetector { |
| |
| int[] lastLocation = null; |
| int[] newLocation = new int[2]; |
| |
| public boolean isViewStableOnScreen(View view) { |
| if (lastLocation == null) { |
| // get initial location |
| lastLocation = new int[2]; |
| view.getLocationInWindow(lastLocation); |
| } else { |
| // get new location and compare to old location |
| view.getLocationInWindow(newLocation); |
| if (newLocation[0] == lastLocation[0] |
| && newLocation[1] == lastLocation[1]) { |
| // location stable, animation finished |
| return true; |
| } |
| lastLocation[0] = newLocation[0]; |
| lastLocation[1] = newLocation[1]; |
| } |
| return false; |
| } |
| } |
| |
| public static class ViewStableOnScreen extends PollingCheckCondition { |
| |
| View mView; |
| ViewScreenPositionDetector mDector = new ViewScreenPositionDetector(); |
| |
| public ViewStableOnScreen(View view) { |
| mView = view; |
| } |
| |
| @Override |
| public boolean canPreProceed() { |
| return false; |
| } |
| |
| @Override |
| public boolean canProceed() { |
| return mDector.isViewStableOnScreen(mView); |
| } |
| |
| } |
| |
| public static class ActivityDestroy extends PollingCheckCondition { |
| |
| Activity mActivity; |
| |
| public ActivityDestroy(Activity activity) { |
| mActivity = activity; |
| } |
| |
| @Override |
| public boolean canProceed() { |
| return mActivity.isDestroyed(); |
| } |
| |
| } |
| |
| } |