Add positionChildAt method to WindowContainer
Added method to change the position of a child among siblings.
It accepts int value, which can either specify a target position
or POSITION_TOP/POSITION_BOTTOM.
When child is moved to top or bottom, there is an option to also
perform same action on parents. This will effectively move the
entire branch of the hierarchy tree to top/bottom.
Test: bit FrameworksServicesTests:com.android.server.wm.WindowContainerTests
Test: #testPositionChildAt
Test: #testPositionChildAtIncludeParents
Test: #testPositionChildAtInvalid
Test: bit FrameworksServicesTests:com.android.server.wm.TaskStackContainersTests
Test: bit FrameworksServicesTests:com.android.server.wm.TaskStackTests
Change-Id: I6ade787487055f1c9a305afea64270c243196614
diff --git a/services/tests/servicestests/src/com/android/server/wm/TaskStackContainersTests.java b/services/tests/servicestests/src/com/android/server/wm/TaskStackContainersTests.java
new file mode 100644
index 0000000..7463102
--- /dev/null
+++ b/services/tests/servicestests/src/com/android/server/wm/TaskStackContainersTests.java
@@ -0,0 +1,69 @@
+/*
+ * 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 com.android.server.wm;
+
+import static android.app.ActivityManager.StackId.PINNED_STACK_ID;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import android.platform.test.annotations.Presubmit;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Tests for the {@link DisplayContent.TaskStackContainers} container in {@link DisplayContent}.
+ *
+ * Build/Install/Run:
+ * bit FrameworksServicesTests:com.android.server.wm.TaskStackContainersTests
+ */
+@SmallTest
+@Presubmit
+@RunWith(AndroidJUnit4.class)
+public class TaskStackContainersTests extends WindowTestsBase {
+
+ @Test
+ public void testStackPositionChildAt() throws Exception {
+ // Test that always-on-top stack can't be moved to position other than top.
+ final TaskStack stack1 = createTaskStackOnDisplay(sDisplayContent);
+ final TaskStack stack2 = createTaskStackOnDisplay(sDisplayContent);
+ sDisplayContent.addStackToDisplay(PINNED_STACK_ID, true);
+ final TaskStack pinnedStack = sWm.mStackIdToStack.get(PINNED_STACK_ID);
+
+ final WindowContainer taskStackContainer = stack1.getParent();
+
+ final int stack1Pos = taskStackContainer.mChildren.indexOf(stack1);
+ final int stack2Pos = taskStackContainer.mChildren.indexOf(stack2);
+ final int pinnedStackPos = taskStackContainer.mChildren.indexOf(pinnedStack);
+
+ taskStackContainer.positionChildAt(WindowContainer.POSITION_BOTTOM, pinnedStack, false);
+ assertEquals(taskStackContainer.mChildren.get(stack1Pos), stack1);
+ assertEquals(taskStackContainer.mChildren.get(stack2Pos), stack2);
+ assertEquals(taskStackContainer.mChildren.get(pinnedStackPos), pinnedStack);
+
+ taskStackContainer.positionChildAt(1, pinnedStack, false);
+ assertEquals(taskStackContainer.mChildren.get(stack1Pos), stack1);
+ assertEquals(taskStackContainer.mChildren.get(stack2Pos), stack2);
+ assertEquals(taskStackContainer.mChildren.get(pinnedStackPos), pinnedStack);
+ }
+}