| /* |
| * 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 android.view; |
| |
| import static junit.framework.Assert.assertEquals; |
| import static junit.framework.Assert.fail; |
| |
| import android.app.Activity; |
| import android.content.Context; |
| import android.graphics.Canvas; |
| import android.support.test.annotation.UiThreadTest; |
| import android.support.test.filters.MediumTest; |
| import android.support.test.rule.ActivityTestRule; |
| import android.support.test.runner.AndroidJUnit4; |
| import android.widget.FrameLayout; |
| |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| |
| @MediumTest |
| @RunWith(AndroidJUnit4.class) |
| public class ViewGroupTransientViewTest { |
| |
| @Rule |
| public ActivityTestRule<Activity> mActivityRule = new ActivityTestRule<>(Activity.class); |
| |
| private FrameLayout mBasePanel; |
| private ViewGroup mTestViewGroup; |
| private TestView mTestView; |
| |
| @Before |
| public void setUp() { |
| final Activity activity = mActivityRule.getActivity(); |
| mBasePanel = new FrameLayout(activity); |
| mTestViewGroup = new FrameLayout(activity); |
| mTestView = new TestView(activity); |
| activity.runOnUiThread(() -> activity.setContentView(mBasePanel)); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void addAndRemove_inNonAttachedViewGroup_shouldNotAttachAndDetach() { |
| mTestViewGroup.addTransientView(mTestView, 0); |
| assertEquals(0, mTestView.mAttachedCount); |
| |
| mTestViewGroup.removeTransientView(mTestView); |
| assertEquals(0, mTestView.mDetachedCount); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void addAndRemove_inAttachedViewGroup_shouldAttachAndDetachOnce() { |
| mBasePanel.addView(mTestViewGroup); |
| mTestViewGroup.addTransientView(mTestView, 0); |
| assertEquals(mTestView, mTestViewGroup.getTransientView(0)); |
| assertEquals(1, mTestViewGroup.getTransientViewCount()); |
| assertEquals(1, mTestView.mAttachedCount); |
| |
| mBasePanel.removeView(mTestViewGroup); |
| mTestViewGroup.removeTransientView(mTestView); |
| assertEquals(null, mTestViewGroup.getTransientView(0)); |
| assertEquals(0, mTestViewGroup.getTransientViewCount()); |
| assertEquals(1, mTestView.mDetachedCount); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void addRemoveAdd_noException() { |
| mBasePanel.addView(mTestViewGroup); |
| mTestViewGroup.addTransientView(mTestView, 1); |
| mTestViewGroup.removeTransientView(mTestView); |
| mTestViewGroup.addTransientView(mTestView, 2); |
| } |
| |
| @UiThreadTest |
| @Test |
| public void reAddBeforeRemove_shouldThrowException() { |
| mTestViewGroup.addView(mTestView); |
| |
| try { |
| mTestViewGroup.addTransientView(mTestView, 0); |
| fail("Not allow to add as transient view before removing it"); |
| } catch (IllegalStateException e) { |
| // Expected |
| } |
| |
| mTestViewGroup.removeView(mTestView); |
| mTestViewGroup.addTransientView(mTestView, 0); |
| try { |
| mTestViewGroup.addTransientView(mTestView, 1); |
| fail("Not allow to add the same transient view again"); |
| } catch (IllegalStateException e) { |
| // Expected |
| } |
| } |
| |
| @Test |
| public void drawTransientView() throws Exception { |
| // For view can be drawn if keyguard is active. |
| mActivityRule.getActivity().setShowWhenLocked(true); |
| |
| final CountDownLatch latch = new CountDownLatch(1); |
| mTestView.mOnDraw = () -> latch.countDown(); |
| |
| mActivityRule.getActivity().runOnUiThread(() -> { |
| mBasePanel.addView(mTestViewGroup); |
| mTestViewGroup.addTransientView(mTestView, 0); |
| }); |
| |
| if (!latch.await(3, TimeUnit.SECONDS)) { |
| fail("Transient view does not draw"); |
| } |
| } |
| |
| private static class TestView extends View { |
| int mAttachedCount; |
| int mDetachedCount; |
| Runnable mOnDraw; |
| |
| TestView(Context context) { |
| super(context); |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| super.onAttachedToWindow(); |
| mAttachedCount++; |
| } |
| |
| @Override |
| protected void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| mDetachedCount++; |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| if (mOnDraw != null) { |
| mOnDraw.run(); |
| mOnDraw = null; |
| } |
| } |
| } |
| } |