Merge "Fix divider visibility issue on transient taskbar" into tm-qpr-dev am: d058f55578 am: 9898e5cc44

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/20747781

Change-Id: I9e780abb3987bf8c40f24fafb5f906ff659ddee8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java

@@ -322,6 +322,7 @@ public abstract class AbsSwipeUpHandler<T extends StatefulActivity<S>,
     private final boolean mIsTransientTaskbar;
     // May be set to false when mIsTransientTaskbar is true.
     private boolean mCanSlowSwipeGoHome = true;
+    private boolean mHasReachedOverviewThreshold = false;
 
     @Nullable
     private RemoteAnimationTargets.ReleaseCheck mSwipePipToHomeReleaseCheck = null;
@@ -764,6 +765,10 @@ public abstract class AbsSwipeUpHandler<T extends StatefulActivity<S>,
 
     private void setIsLikelyToStartNewTask(boolean isLikelyToStartNewTask, boolean animate) {
         if (mIsLikelyToStartNewTask != isLikelyToStartNewTask) {
+            if (isLikelyToStartNewTask && mIsTransientTaskbar) {
+                setDividerShown(false /* shown */, true /* immediate */);
+            }
+
             mIsLikelyToStartNewTask = isLikelyToStartNewTask;
             maybeUpdateRecentsAttachedState(animate);
         }
@@ -1666,7 +1671,9 @@ public abstract class AbsSwipeUpHandler<T extends StatefulActivity<S>,
         mRecentsAnimationController.enableInputConsumer();
 
         // Start hiding the divider
-        setDividerShown(false /* shown */, true /* immediate */);
+        if (!mIsTransientTaskbar || mTaskbarAlreadyOpen || mIsTaskbarAllAppsOpen) {
+            setDividerShown(false /* shown */, true /* immediate */);
+        }
     }
 
     private void computeRecentsScrollIfInvisible() {
@@ -2302,6 +2309,10 @@ public abstract class AbsSwipeUpHandler<T extends StatefulActivity<S>,
 
         // "Catch up" with the displacement at mTaskbarCatchUpThreshold.
         if (displacement < mTaskbarCatchUpThreshold) {
+            if (!mHasReachedOverviewThreshold) {
+                setDividerShown(false /* shown */, true /* immediate */);
+                mHasReachedOverviewThreshold = true;
+            }
             return Utilities.mapToRange(displacement, mTaskbarAppWindowThreshold,
                     mTaskbarCatchUpThreshold, 0, mTaskbarCatchUpThreshold, ACCEL_DEACCEL);
         }