Merge changes I53d8e217,Iff38e372 into udc-dev

* changes:
  Aggressively reset SwipeHelper state
  Clear mTouchedView when a snap-back animation ends

packages/SystemUI/src/com/android/systemui/SwipeHelper.java

@@ -548,6 +548,10 @@ public class SwipeHelper implements Gefingerpoken, Dumpable {
             if (!cancelled) {
                 updateSwipeProgressFromOffset(animView, canBeDismissed);
                 resetSwipeOfView(animView);
+                // Clear the snapped view after success, assuming it's not being swiped now
+                if (animView == mTouchedView && !mIsSwiping) {
+                    mTouchedView = null;
+                }
             }
             onChildSnappedBack(animView, targetLeft);
         });
@@ -813,13 +817,39 @@ public class SwipeHelper implements Gefingerpoken, Dumpable {
         }
     }
 
-    public void resetSwipeState() {
-        View swipedView = getSwipedView();
+    private void resetSwipeState() {
+        resetSwipeStates(/* resetAll= */ false);
+    }
+
+    public void resetTouchState() {
+        resetSwipeStates(/* resetAll= */ true);
+    }
+
+    /** This method resets the swipe state, and if `resetAll` is true, also resets the snap state */
+    private void resetSwipeStates(boolean resetAll) {
+        final View touchedView = mTouchedView;
+        final boolean wasSnapping = mSnappingChild;
+        final boolean wasSwiping = mIsSwiping;
         mTouchedView = null;
         mIsSwiping = false;
-        if (swipedView != null) {
-            snapChildIfNeeded(swipedView, false, 0);
-            onChildSnappedBack(swipedView, 0);
+        // If we were swiping, then we resetting swipe requires resetting everything.
+        resetAll |= wasSwiping;
+        if (resetAll) {
+            mSnappingChild = false;
+        }
+        if (touchedView == null) return;  // No view to reset visually
+        // When snap needs to be reset, first thing is to cancel any translation animation
+        final boolean snapNeedsReset = resetAll && wasSnapping;
+        if (snapNeedsReset) {
+            cancelTranslateAnimation(touchedView);
+        }
+        // actually reset the view to default state
+        if (resetAll) {
+            snapChildIfNeeded(touchedView, false, 0);
+        }
+        // report if a swipe or snap was reset.
+        if (wasSwiping || snapNeedsReset) {
+            onChildSnappedBack(touchedView, 0);
         }
     }
 

packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayout.java

@@ -4406,6 +4406,7 @@ public class NotificationStackScrollLayout extends ViewGroup implements Dumpable
         boolean nowHiddenAtAll = mAmbientState.isHiddenAtAll();
         if (nowFullyHidden != wasFullyHidden) {
             updateVisibility();
+            mSwipeHelper.resetTouchState();
         }
         if (!wasHiddenAtAll && nowHiddenAtAll) {
             resetExposedMenuView(true /* animate */, true /* animate */);
@@ -5866,7 +5867,7 @@ public class NotificationStackScrollLayout extends ViewGroup implements Dumpable
     }
 
     private void cancelActiveSwipe() {
-        mSwipeHelper.resetSwipeState();
+        mSwipeHelper.resetTouchState();
         updateContinuousShadowDrawing();
     }
 

packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayoutTest.java

@@ -836,7 +836,7 @@ public class NotificationStackScrollLayoutTest extends SysuiTestCase {
     }
 
     @Test
-    public void onShadeClosesWithAnimationWillResetSwipeState() {
+    public void onShadeClosesWithAnimationWillResetTouchState() {
         // GIVEN shade is expanded
         mStackScroller.setIsExpanded(true);
         clearInvocations(mNotificationSwipeHelper);
@@ -846,12 +846,12 @@ public class NotificationStackScrollLayoutTest extends SysuiTestCase {
         mStackScroller.setIsExpanded(false);
         mStackScroller.onExpansionStopped();
 
-        // VERIFY swipe is reset
-        verify(mNotificationSwipeHelper).resetSwipeState();
+        // VERIFY touch is reset
+        verify(mNotificationSwipeHelper).resetTouchState();
     }
 
     @Test
-    public void onShadeClosesWithoutAnimationWillResetSwipeState() {
+    public void onShadeClosesWithoutAnimationWillResetTouchState() {
         // GIVEN shade is expanded
         mStackScroller.setIsExpanded(true);
         clearInvocations(mNotificationSwipeHelper);
@@ -859,8 +859,8 @@ public class NotificationStackScrollLayoutTest extends SysuiTestCase {
         // WHEN closing the shade without the animation
         mStackScroller.setIsExpanded(false);
 
-        // VERIFY swipe is reset
-        verify(mNotificationSwipeHelper).resetSwipeState();
+        // VERIFY touch is reset
+        verify(mNotificationSwipeHelper).resetTouchState();
     }
 
     @Test