Merge "Remove Bubbles from the WM, only after all bubbles finish animating out." into rvc-dev am: e7b00f678c

Change-Id: I313d0a46da6e621a6bb3a931355c11eeae63a498

packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java

@@ -185,9 +185,10 @@ public class BubbleController implements ConfigurationController.ConfigurationLi
     // Used to post to main UI thread
     private Handler mHandler = new Handler();
 
-    /** LayoutParams used to add the BubbleStackView to the window maanger. */
+    /** LayoutParams used to add the BubbleStackView to the window manager. */
     private WindowManager.LayoutParams mWmLayoutParams;
-
+    /** Whether or not the BubbleStackView has been added to the WindowManager. */
+    private boolean mAddedToWindowManager = false;
 
     // Used for determining view rect for touch interaction
     private Rect mTempRect = new Rect();
@@ -595,9 +596,8 @@ public class BubbleController implements ConfigurationController.ConfigurationLi
         if (mStackView == null) {
             mStackView = new BubbleStackView(
                     mContext, mBubbleData, mSurfaceSynchronizer, mFloatingContentCoordinator,
-                    mSysUiState, mNotificationShadeWindowController);
+                    mSysUiState, mNotificationShadeWindowController, this::onAllBubblesAnimatedOut);
             mStackView.addView(mBubbleScrim);
-            addToWindowManager();
             if (mExpandListener != null) {
                 mStackView.setExpandListener(mExpandListener);
             }
@@ -605,10 +605,17 @@ public class BubbleController implements ConfigurationController.ConfigurationLi
             mStackView.setUnbubbleConversationCallback(notificationEntry ->
                     onUserChangedBubble(notificationEntry, false /* shouldBubble */));
         }
+
+        addToWindowManagerMaybe();
     }
 
-    /** Adds the BubbleStackView to the WindowManager. */
+    /** Adds the BubbleStackView to the WindowManager if it's not already there. */
-    private void addToWindowManager() {
+    private void addToWindowManagerMaybe() {
+        // If the stack is null, or already added, don't add it.
+        if (mStackView == null || mAddedToWindowManager) {
+            return;
+        }
+
         mWmLayoutParams = new WindowManager.LayoutParams(
                 // Fill the screen so we can use translation animations to position the bubble
                 // stack. We'll use touchable regions to ignore touches that are not on the bubbles
@@ -629,9 +636,37 @@ public class BubbleController implements ConfigurationController.ConfigurationLi
         mWmLayoutParams.packageName = mContext.getPackageName();
         mWmLayoutParams.layoutInDisplayCutoutMode = LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
 
-        mWindowManager.addView(mStackView, mWmLayoutParams);
+        try {
+            mAddedToWindowManager = true;
+            mWindowManager.addView(mStackView, mWmLayoutParams);
+        } catch (IllegalStateException e) {
+            // This means the stack has already been added. This shouldn't happen, since we keep
+            // track of that, but just in case, update the previously added view's layout params.
+            e.printStackTrace();
+            updateWmFlags();
+        }
     }
 
+    /** Removes the BubbleStackView from the WindowManager if it's there. */
+    private void removeFromWindowManagerMaybe() {
+        if (!mAddedToWindowManager) {
+            return;
+        }
+
+        try {
+            mAddedToWindowManager = false;
+            mWindowManager.removeView(mStackView);
+        } catch (IllegalArgumentException e) {
+            // This means the stack has already been removed - it shouldn't happen, but ignore if it
+            // does, since we wanted it removed anyway.
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * Updates the BubbleStackView's WindowManager.LayoutParams, and updates the WindowManager with
+     * the new params if the stack has been added.
+     */
     private void updateWmFlags() {
         if (isStackExpanded()) {
             // If we're expanded, we want to be focusable so that the ActivityView can receive focus
@@ -643,7 +678,25 @@ public class BubbleController implements ConfigurationController.ConfigurationLi
             mWmLayoutParams.flags |= WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
         }
 
-        mWindowManager.updateViewLayout(mStackView, mWmLayoutParams);
+        if (mStackView != null && mAddedToWindowManager) {
+            try {
+                mWindowManager.updateViewLayout(mStackView, mWmLayoutParams);
+            } catch (IllegalArgumentException e) {
+                // If the stack is somehow not there, ignore the attempt to update it.
+                e.printStackTrace();
+            }
+        }
+    }
+
+    /**
+     * Called by the BubbleStackView and whenever all bubbles have animated out, and none have been
+     * added in the meantime.
+     */
+    private void onAllBubblesAnimatedOut() {
+        if (mStackView != null) {
+            mStackView.setVisibility(INVISIBLE);
+            removeFromWindowManagerMaybe();
+        }
     }
 
     /**
@@ -833,10 +886,9 @@ public class BubbleController implements ConfigurationController.ConfigurationLi
     }
 
     void updateBubble(NotificationEntry notif, boolean suppressFlyout, boolean showInShade) {
-        if (mStackView == null) {
+        // Lazy init stack view when a bubble is created
-            // Lazy init stack view when a bubble is created
+        ensureStackViewCreated();
-            ensureStackViewCreated();
+
-        }
         // If this is an interruptive notif, mark that it's interrupted
         if (notif.getImportance() >= NotificationManager.IMPORTANCE_HIGH) {
             notif.setInterruption();
@@ -1196,11 +1248,15 @@ public class BubbleController implements ConfigurationController.ConfigurationLi
         if (mStackView == null) {
             return;
         }
-        if (mStatusBarStateListener.getCurrentState() == SHADE && hasBubbles()) {
+
-            // Bubbles only appear in unlocked shade
+        if (mStatusBarStateListener.getCurrentState() != SHADE) {
-            mStackView.setVisibility(hasBubbles() ? VISIBLE : INVISIBLE);
+            // Bubbles don't appear over the locked shade.
-        } else if (mStackView != null) {
             mStackView.setVisibility(INVISIBLE);
+        } else if (hasBubbles()) {
+            // If we're unlocked, show the stack if we have bubbles. If we don't have bubbles, the
+            // stack will be set to INVISIBLE in onAllBubblesAnimatedOut after the bubbles animate
+            // out.
+            mStackView.setVisibility(VISIBLE);
         }
 
         mStackView.updateContentDescription();

packages/SystemUI/src/com/android/systemui/bubbles/BubbleStackView.java

@@ -656,7 +656,8 @@ public class BubbleStackView extends FrameLayout
             @Nullable SurfaceSynchronizer synchronizer,
             FloatingContentCoordinator floatingContentCoordinator,
             SysUiState sysUiState,
-            NotificationShadeWindowController notificationShadeWindowController) {
+            NotificationShadeWindowController notificationShadeWindowController,
+            Runnable allBubblesAnimatedOutAction) {
         super(context);
 
         mBubbleData = data;
@@ -691,11 +692,18 @@ public class BubbleStackView extends FrameLayout
         mExpandedViewPadding = res.getDimensionPixelSize(R.dimen.bubble_expanded_view_padding);
         int elevation = res.getDimensionPixelSize(R.dimen.bubble_elevation);
 
+        final Runnable onBubbleAnimatedOut = () -> {
+            if (getBubbleCount() == 0) {
+                allBubblesAnimatedOutAction.run();
+            }
+        };
+
         mStackAnimationController = new StackAnimationController(
-                floatingContentCoordinator, this::getBubbleCount);
+                floatingContentCoordinator, this::getBubbleCount, onBubbleAnimatedOut);
 
         mExpandedAnimationController = new ExpandedAnimationController(
-                mDisplaySize, mExpandedViewPadding, res.getConfiguration().orientation);
+                mDisplaySize, mExpandedViewPadding, res.getConfiguration().orientation,
+                onBubbleAnimatedOut);
         mSurfaceSynchronizer = synchronizer != null ? synchronizer : DEFAULT_SURFACE_SYNCHRONIZER;
 
         setUpUserEducation();

packages/SystemUI/src/com/android/systemui/bubbles/animation/ExpandedAnimationController.java

@@ -32,6 +32,7 @@ import androidx.dynamicanimation.animation.SpringForce;
 
 import com.android.systemui.Interpolators;
 import com.android.systemui.R;
+import com.android.systemui.util.animation.PhysicsAnimator;
 import com.android.systemui.util.magnetictarget.MagnetizedObject;
 
 import com.google.android.collect.Sets;
@@ -69,6 +70,10 @@ public class ExpandedAnimationController
      */
     private static final float FLING_TO_DISMISS_MIN_VELOCITY = 6000f;
 
+    private final PhysicsAnimator.SpringConfig mAnimateOutSpringConfig =
+            new PhysicsAnimator.SpringConfig(
+                    EXPAND_COLLAPSE_ANIM_STIFFNESS, SpringForce.DAMPING_RATIO_NO_BOUNCY);
+
     /** Horizontal offset between bubbles, which we need to know to re-stack them. */
     private float mStackOffsetPx;
     /** Space between status bar and bubbles in the expanded state. */
@@ -116,10 +121,17 @@ public class ExpandedAnimationController
 
     private int mExpandedViewPadding;
 
+    /**
+     * Callback to run whenever any bubble is animated out. The BubbleStackView will check if the
+     * end of this animation means we have no bubbles left, and notify the BubbleController.
+     */
+    private Runnable mOnBubbleAnimatedOutAction;
+
     public ExpandedAnimationController(Point displaySize, int expandedViewPadding,
-            int orientation) {
+            int orientation, Runnable onBubbleAnimatedOutAction) {
         updateResources(orientation, displaySize);
         mExpandedViewPadding = expandedViewPadding;
+        mOnBubbleAnimatedOutAction = onBubbleAnimatedOutAction;
     }
 
     /**
@@ -355,8 +367,8 @@ public class ExpandedAnimationController
         }
         animationForChild(bubble)
                 .withStiffness(SpringForce.STIFFNESS_HIGH)
-                .scaleX(1.1f)
+                .scaleX(0f)
-                .scaleY(1.1f)
+                .scaleY(0f)
                 .translationY(bubble.getTranslationY() + translationYBy)
                 .alpha(0f, after)
                 .start();
@@ -500,18 +512,17 @@ public class ExpandedAnimationController
 
     @Override
     void onChildRemoved(View child, int index, Runnable finishRemoval) {
-        final PhysicsAnimationLayout.PhysicsPropertyAnimator animator = animationForChild(child);
-
         // If we're removing the dragged-out bubble, that means it got dismissed.
         if (child.equals(getDraggedOutBubble())) {
             mMagnetizedBubbleDraggingOut = null;
             finishRemoval.run();
+            mOnBubbleAnimatedOutAction.run();
         } else {
-            animator.alpha(0f, finishRemoval /* endAction */)
+            PhysicsAnimator.getInstance(child)
-                    .withStiffness(SpringForce.STIFFNESS_HIGH)
+                    .spring(DynamicAnimation.ALPHA, 0f)
-                    .withDampingRatio(SpringForce.DAMPING_RATIO_NO_BOUNCY)
+                    .spring(DynamicAnimation.SCALE_X, 0f, mAnimateOutSpringConfig)
-                    .scaleX(1.1f)
+                    .spring(DynamicAnimation.SCALE_Y, 0f, mAnimateOutSpringConfig)
-                    .scaleY(1.1f)
+                    .withEndActions(finishRemoval, mOnBubbleAnimatedOutAction)
                     .start();
         }
 

packages/SystemUI/src/com/android/systemui/bubbles/animation/StackAnimationController.java

@@ -74,6 +74,10 @@ public class StackAnimationController extends
     private static final int FLING_FOLLOW_STIFFNESS = 20000;
     public static final float DEFAULT_BOUNCINESS = 0.9f;
 
+    private final PhysicsAnimator.SpringConfig mAnimateOutSpringConfig =
+            new PhysicsAnimator.SpringConfig(
+                    ANIMATE_IN_STIFFNESS, SpringForce.DAMPING_RATIO_NO_BOUNCY);
+
     /**
      * Friction applied to fling animations. Since the stack must land on one of the sides of the
      * screen, we want less friction horizontally so that the stack has a better chance of making it
@@ -248,12 +252,19 @@ public class StackAnimationController extends
     /** Returns the number of 'real' bubbles (excluding the overflow bubble). */
     private IntSupplier mBubbleCountSupplier;
 
+    /**
+     * Callback to run whenever any bubble is animated out. The BubbleStackView will check if the
+     * end of this animation means we have no bubbles left, and notify the BubbleController.
+     */
+    private Runnable mOnBubbleAnimatedOutAction;
+
     public StackAnimationController(
             FloatingContentCoordinator floatingContentCoordinator,
-            IntSupplier bubbleCountSupplier) {
+            IntSupplier bubbleCountSupplier,
+            Runnable onBubbleAnimatedOutAction) {
         mFloatingContentCoordinator = floatingContentCoordinator;
         mBubbleCountSupplier = bubbleCountSupplier;
-
+        mOnBubbleAnimatedOutAction = onBubbleAnimatedOutAction;
     }
 
     /**
@@ -652,8 +663,8 @@ public class StackAnimationController extends
     public void animateStackDismissal(float translationYBy, Runnable after) {
         animationsForChildrenFromIndex(0, (index, animation) ->
                 animation
-                        .scaleX(0.5f)
+                        .scaleX(0f)
-                        .scaleY(0.5f)
+                        .scaleY(0f)
                         .alpha(0f)
                         .translationY(
                                 mLayout.getChildAt(index).getTranslationY() + translationYBy)
@@ -760,13 +771,11 @@ public class StackAnimationController extends
 
     @Override
     void onChildRemoved(View child, int index, Runnable finishRemoval) {
-        // Animate the removing view in the opposite direction of the stack.
+        PhysicsAnimator.getInstance(child)
-        final float xOffset = getOffsetForChainedPropertyAnimation(DynamicAnimation.TRANSLATION_X);
+                .spring(DynamicAnimation.ALPHA, 0f)
-        animationForChild(child)
+                .spring(DynamicAnimation.SCALE_X, 0f, mAnimateOutSpringConfig)
-                .alpha(0f, finishRemoval /* after */)
+                .spring(DynamicAnimation.SCALE_Y, 0f, mAnimateOutSpringConfig)
-                .scaleX(ANIMATE_IN_STARTING_SCALE)
+                .withEndActions(finishRemoval, mOnBubbleAnimatedOutAction)
-                .scaleY(ANIMATE_IN_STARTING_SCALE)
-                .translationX(mStackPosition.x - (-xOffset * ANIMATE_TRANSLATION_FACTOR))
                 .start();
 
         // If there are other bubbles, pull them into the correct position.

packages/SystemUI/tests/src/com/android/systemui/bubbles/animation/ExpandedAnimationControllerTest.java

@@ -49,11 +49,13 @@ public class ExpandedAnimationControllerTest extends PhysicsAnimationLayoutTestC
     private int mOrientation = Configuration.ORIENTATION_PORTRAIT;
     private float mLauncherGridDiff = 30f;
 
+    private Runnable mOnBubbleAnimatedOutAction = Mockito.mock(Runnable.class);
+
     @Spy
     private ExpandedAnimationController mExpandedController =
             new ExpandedAnimationController(
                     new Point(mDisplayWidth, mDisplayHeight) /* displaySize */,
-                    mExpandedViewPadding, mOrientation);
+                    mExpandedViewPadding, mOrientation, mOnBubbleAnimatedOutAction);
 
     private int mStackOffset;
     private float mBubblePaddingTop;

packages/SystemUI/tests/src/com/android/systemui/bubbles/animation/StackAnimationControllerTest.java

@@ -40,6 +40,7 @@ import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
+import org.mockito.Mockito;
 
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
@@ -66,7 +67,7 @@ public class StackAnimationControllerTest extends PhysicsAnimationLayoutTestCase
                     public int getAsInt() {
                         return mLayout.getChildCount();
                     }
-                }));
+                }, Mockito.mock(Runnable.class)));
         mLayout.setActiveController(mStackController);
         addOneMoreThanBubbleLimitBubbles();
         mStackOffset = mLayout.getResources().getDimensionPixelSize(R.dimen.bubble_stack_offset);
@@ -303,8 +304,9 @@ public class StackAnimationControllerTest extends PhysicsAnimationLayoutTestCase
     private class TestableStackController extends StackAnimationController {
         TestableStackController(
                 FloatingContentCoordinator floatingContentCoordinator,
-                IntSupplier bubbleCountSupplier) {
+                IntSupplier bubbleCountSupplier,
-            super(floatingContentCoordinator, bubbleCountSupplier);
+                Runnable onBubbleAnimatedOutAction) {
+            super(floatingContentCoordinator, bubbleCountSupplier, onBubbleAnimatedOutAction);
         }
 
         @Override