Merge "Fix flickering when switched to the task without IME shown" into sc-dev
diff --git a/packages/SystemUI/src/com/android/systemui/qs/QSPanel.java b/packages/SystemUI/src/com/android/systemui/qs/QSPanel.java
index 425bdc2..1b4ee73 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/QSPanel.java
+++ b/packages/SystemUI/src/com/android/systemui/qs/QSPanel.java
@@ -27,12 +27,15 @@
 import android.os.Handler;
 import android.os.Message;
 import android.util.AttributeSet;
+import android.util.Log;
 import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.LinearLayout;
 
+import androidx.annotation.VisibleForTesting;
+
 import com.android.internal.logging.UiEventLogger;
 import com.android.internal.widget.RemeasuringLinearLayout;
 import com.android.systemui.R;
@@ -386,19 +389,18 @@
                 if (mediaView != null) {
                     index = indexOfChild(mediaView);
                 }
+                if (mSecurityFooter.getParent() == this && indexOfChild(mSecurityFooter) < index) {
+                    // When we remove the securityFooter to rearrange, the index of media will go
+                    // down by one, so we correct it
+                    index--;
+                }
                 switchToParent(mSecurityFooter, this, index);
             }
         }
     }
 
     private void switchToParent(View child, ViewGroup parent, int index) {
-        ViewGroup currentParent = (ViewGroup) child.getParent();
-        if (currentParent != parent || currentParent.indexOfChild(child) != index) {
-            if (currentParent != null) {
-                currentParent.removeView(child);
-            }
-            parent.addView(child, index);
-        }
+        switchToParent(child, parent, index, getDumpableTag());
     }
 
     /** Call when orientation has changed and MediaHost needs to be adjusted. */
@@ -767,4 +769,29 @@
     interface OnConfigurationChangedListener {
         void onConfigurationChange(Configuration newConfig);
     }
+
+    @VisibleForTesting
+    static void switchToParent(View child, ViewGroup parent, int index, String tag) {
+        if (parent == null) {
+            Log.w(tag, "Trying to move view to null parent",
+                    new IllegalStateException());
+            return;
+        }
+        ViewGroup currentParent = (ViewGroup) child.getParent();
+        if (currentParent != parent) {
+            if (currentParent != null) {
+                currentParent.removeView(child);
+            }
+            parent.addView(child, index);
+            return;
+        }
+        // Same parent, we are just changing indices
+        int currentIndex = parent.indexOfChild(child);
+        if (currentIndex == index) {
+            // We want to be in the same place. Nothing to do here
+            return;
+        }
+        parent.removeView(child);
+        parent.addView(child, index);
+    }
 }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/qs/QSPanelSwitchToParentTest.kt b/packages/SystemUI/tests/src/com/android/systemui/qs/QSPanelSwitchToParentTest.kt
new file mode 100644
index 0000000..56f2905
--- /dev/null
+++ b/packages/SystemUI/tests/src/com/android/systemui/qs/QSPanelSwitchToParentTest.kt
@@ -0,0 +1,162 @@
+/*
+ * Copyright (C) 2021 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.qs
+
+import com.google.common.truth.Truth.assertThat
+
+import androidx.test.filters.SmallTest
+
+import android.testing.AndroidTestingRunner
+import android.view.View
+import android.view.ViewGroup
+import android.widget.FrameLayout
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.util.children
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidTestingRunner::class)
+@SmallTest
+class QSPanelSwitchToParentTest : SysuiTestCase() {
+
+    private lateinit var parent1: FrameLayout
+    private lateinit var parent2: FrameLayout
+
+    private lateinit var movingView: View
+
+    private lateinit var view1A: View
+    private lateinit var view1B: View
+    private lateinit var view1C: View
+
+    private lateinit var view2A: View
+    private lateinit var view2B: View
+    private lateinit var view2C: View
+
+    @Before
+    fun setUp() {
+        parent1 = FrameLayout(mContext)
+        parent2 = FrameLayout(mContext)
+
+        movingView = View(mContext)
+
+        view1A = View(mContext)
+        parent1.addView(view1A)
+        view1B = View(mContext)
+        parent1.addView(view1B)
+        view1C = View(mContext)
+        parent1.addView(view1C)
+
+        view2A = View(mContext)
+        parent2.addView(view2A)
+        view2B = View(mContext)
+        parent2.addView(view2B)
+        view2C = View(mContext)
+        parent2.addView(view2C)
+    }
+
+    @Test
+    fun testNullTargetNoInteractions() {
+        QSPanel.switchToParent(movingView, null, -1, "")
+
+        assertThat(movingView.parent).isNull()
+    }
+
+    @Test
+    fun testMoveToEndNoParent() {
+        QSPanel.switchToParent(movingView, parent2, -1, "")
+
+        assertThat(parent1.childrenList).containsExactly(
+                view1A, view1B, view1C
+        )
+
+        assertThat(parent2.childrenList).containsExactly(
+                view2A, view2B, view2C, movingView
+        )
+    }
+
+    @Test
+    fun testMoveToEndDifferentParent() {
+        parent1.addView(movingView, 0)
+
+        QSPanel.switchToParent(movingView, parent2, -1, "")
+
+        assertThat(parent1.childrenList).containsExactly(
+                view1A, view1B, view1C
+        )
+        assertThat(parent2.childrenList).containsExactly(
+                view2A, view2B, view2C, movingView
+        )
+    }
+
+    @Test
+    fun testMoveToEndSameParent() {
+        parent2.addView(movingView, 0)
+
+        QSPanel.switchToParent(movingView, parent2, -1, "")
+
+        assertThat(parent1.childrenList).containsExactly(
+                view1A, view1B, view1C
+        )
+        assertThat(parent2.childrenList).containsExactly(
+                view2A, view2B, view2C, movingView
+        )
+    }
+
+    @Test
+    fun testMoveToMiddleFromNoParent() {
+        QSPanel.switchToParent(movingView, parent2, 1, "")
+
+        assertThat(parent1.childrenList).containsExactly(
+                view1A, view1B, view1C
+        )
+        assertThat(parent2.childrenList).containsExactly(
+                view2A, movingView, view2B, view2C
+        )
+    }
+
+    @Test
+    fun testMoveToMiddleDifferentParent() {
+        parent1.addView(movingView, 1)
+
+        QSPanel.switchToParent(movingView, parent2, 2, "")
+
+        assertThat(parent1.childrenList).containsExactly(
+                view1A, view1B, view1C
+        )
+        assertThat(parent2.childrenList).containsExactly(
+                view2A, view2B, movingView, view2C
+        )
+    }
+
+    @Test
+    fun testMoveToMiddleSameParent() {
+        parent2.addView(movingView, 0)
+
+        QSPanel.switchToParent(movingView, parent2, 1, "")
+
+        assertThat(parent1.childrenList).containsExactly(
+                view1A, view1B, view1C
+        )
+        assertThat(parent2.childrenList).containsExactly(
+                view2A, movingView, view2B, view2C
+        )
+    }
+
+    private val ViewGroup.childrenList: List<View>
+        get() = children.toList()
+}
\ No newline at end of file
diff --git a/packages/SystemUI/tests/src/com/android/systemui/qs/QSPanelTest.java b/packages/SystemUI/tests/src/com/android/systemui/qs/QSPanelTest.java
index 4f88599..16d4ddd 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/qs/QSPanelTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/qs/QSPanelTest.java
@@ -14,6 +14,8 @@
 
 package com.android.systemui.qs;
 
+import static junit.framework.Assert.assertEquals;
+
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyBoolean;
 import static org.mockito.ArgumentMatchers.anyInt;
@@ -21,19 +23,20 @@
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
+import android.content.res.Configuration;
 import android.testing.AndroidTestingRunner;
 import android.testing.TestableLooper;
 import android.testing.TestableLooper.RunWithLooper;
+import android.view.View;
 import android.view.ViewGroup;
 import android.widget.FrameLayout;
 
 import androidx.test.filters.SmallTest;
 
 import com.android.systemui.SysuiTestCase;
-import com.android.systemui.plugins.ActivityStarter;
 import com.android.systemui.plugins.qs.QSTileView;
-import com.android.systemui.qs.logging.QSLogger;
 import com.android.systemui.qs.tileimpl.QSTileImpl;
+import com.android.systemui.util.animation.UniqueObjectHostView;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -56,29 +59,28 @@
     private QSTileImpl dndTile;
     @Mock
     private QSPanelControllerBase.TileRecord mDndTileRecord;
-    @Mock
-    private QSLogger mQSLogger;
     private ViewGroup mParentView;
     @Mock
     private QSDetail.Callback mCallback;
     @Mock
     private QSTileView mQSTileView;
+
+    private UniqueObjectHostView mMediaView;
+    private View mSecurityFooter;
     @Mock
-    private ActivityStarter mActivityStarter;
+    private FrameLayout mHeaderContainer;
 
     @Before
     public void setup() throws Exception {
         MockitoAnnotations.initMocks(this);
         mTestableLooper = TestableLooper.get(this);
 
-//        // Dependencies for QSSecurityFooter
-//        mDependency.injectTestDependency(ActivityStarter.class, mActivityStarter);
-//        mDependency.injectMockDependency(SecurityController.class);
-//        mDependency.injectTestDependency(Dependency.BG_LOOPER, mTestableLooper.getLooper());
-//        mContext.addMockSystemService(Context.USER_SERVICE, mock(UserManager.class));
         mDndTileRecord.tile = dndTile;
         mDndTileRecord.tileView = mQSTileView;
 
+        mMediaView = new UniqueObjectHostView(mContext);
+        mSecurityFooter = new View(mContext);
+
         mTestableLooper.runWithLooper(() -> {
             mQsPanel = new QSPanel(mContext, null);
             mQsPanel.initialize();
@@ -92,6 +94,7 @@
             when(mHost.createTileView(any(), any(), anyBoolean())).thenReturn(mQSTileView);
             mQsPanel.addTile(mDndTileRecord);
             mQsPanel.setCallback(mCallback);
+            mQsPanel.setHeaderContainer(mHeaderContainer);
         });
     }
 
@@ -112,4 +115,62 @@
 
         verify(mCallback, never()).onShowingDetail(any(), anyInt(), anyInt());
     }
+
+    @Test
+    public void testSecurityFooterAtEndNoMedia_portrait() {
+        mTestableLooper.processAllMessages();
+
+        mContext.getResources().getConfiguration().orientation = Configuration.ORIENTATION_PORTRAIT;
+
+        mQsPanel.setSecurityFooter(mSecurityFooter);
+
+        int children = mQsPanel.getChildCount();
+        assertEquals(children - 1, mQsPanel.indexOfChild(mSecurityFooter));
+    }
+
+    @Test
+    public void testSecurityFooterRightBeforeMedia_portrait() {
+        mTestableLooper.processAllMessages();
+
+        mContext.getResources().getConfiguration().orientation = Configuration.ORIENTATION_PORTRAIT;
+
+        mQsPanel.addView(mMediaView);
+
+        mQsPanel.setSecurityFooter(mSecurityFooter);
+
+        int securityFooterIndex = mQsPanel.indexOfChild(mSecurityFooter);
+        int mediaIndex = mQsPanel.indexOfChild(mMediaView);
+
+        assertEquals(mediaIndex - 1, securityFooterIndex);
+    }
+
+    @Test
+    public void testSecurityFooterRightBeforeMedia_portrait_configChange() {
+        mTestableLooper.processAllMessages();
+
+        mContext.getResources().getConfiguration().orientation = Configuration.ORIENTATION_PORTRAIT;
+
+        mQsPanel.addView(mMediaView);
+
+        mQsPanel.setSecurityFooter(mSecurityFooter);
+
+        mQsPanel.onConfigurationChanged(mContext.getResources().getConfiguration());
+
+        int securityFooterIndex = mQsPanel.indexOfChild(mSecurityFooter);
+        int mediaIndex = mQsPanel.indexOfChild(mMediaView);
+
+        assertEquals(mediaIndex - 1, securityFooterIndex);
+    }
+
+    @Test
+    public void testSecurityFooterInHeader_landscape() {
+        mTestableLooper.processAllMessages();
+
+        mContext.getResources().getConfiguration().orientation =
+                Configuration.ORIENTATION_LANDSCAPE;
+
+        mQsPanel.setSecurityFooter(mSecurityFooter);
+
+        verify(mHeaderContainer).addView(mSecurityFooter, 0);
+    }
 }