diff --git a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarController.java b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarController.java
index 30e4e47..f2aa2d2 100644
--- a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarController.java
@@ -526,9 +526,10 @@
      * <p>
      * Updates the value locally in Launcher and in WMShell.
      */
-    public void updateBubbleBarLocation(BubbleBarLocation location) {
+    public void updateBubbleBarLocation(BubbleBarLocation location,
+            @BubbleBarLocation.UpdateSource int source) {
         updateBubbleBarLocationInternal(location);
-        mSystemUiProxy.setBubbleBarLocation(location);
+        mSystemUiProxy.setBubbleBarLocation(location, source);
     }
 
     private void updateBubbleBarLocationInternal(BubbleBarLocation location) {
diff --git a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarView.java b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarView.java
index d91d10a..925e93d 100644
--- a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarView.java
+++ b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarView.java
@@ -407,11 +407,13 @@
             return true;
         }
         if (action == R.id.action_move_left) {
-            mController.updateBubbleBarLocation(BubbleBarLocation.LEFT);
+            mController.updateBubbleBarLocation(BubbleBarLocation.LEFT,
+                    BubbleBarLocation.UpdateSource.A11Y_ACTION_BAR);
             return true;
         }
         if (action == R.id.action_move_right) {
-            mController.updateBubbleBarLocation(BubbleBarLocation.RIGHT);
+            mController.updateBubbleBarLocation(BubbleBarLocation.RIGHT,
+                    BubbleBarLocation.UpdateSource.A11Y_ACTION_BAR);
             return true;
         }
         return false;
@@ -1560,6 +1562,7 @@
         void dismissBubbleBar();
 
         /** Requests the controller to update bubble bar location to the given value */
-        void updateBubbleBarLocation(BubbleBarLocation location);
+        void updateBubbleBarLocation(BubbleBarLocation location,
+                @BubbleBarLocation.UpdateSource int source);
     }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarViewController.java b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarViewController.java
index 96fadf7..776a98e 100644
--- a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarViewController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarViewController.java
@@ -217,8 +217,9 @@
             }
 
             @Override
-            public void updateBubbleBarLocation(BubbleBarLocation location) {
-                mBubbleBarController.updateBubbleBarLocation(location);
+            public void updateBubbleBarLocation(BubbleBarLocation location,
+                    @BubbleBarLocation.UpdateSource int source) {
+                mBubbleBarController.updateBubbleBarLocation(location, source);
             }
         });
 
@@ -242,8 +243,9 @@
             }
 
             @Override
-            public void updateBubbleBarLocation(BubbleBarLocation location) {
-                mBubbleBarController.updateBubbleBarLocation(location);
+            public void updateBubbleBarLocation(BubbleBarLocation location,
+                    @BubbleBarLocation.UpdateSource int source) {
+                mBubbleBarController.updateBubbleBarLocation(location, source);
             }
         };
     }
diff --git a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleDragController.java b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleDragController.java
index 42bd197..fd4cf0e 100644
--- a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleDragController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleDragController.java
@@ -161,7 +161,8 @@
 
             @Override
             void onDragEnd() {
-                mBubbleBarController.updateBubbleBarLocation(mReleasedLocation);
+                mBubbleBarController.updateBubbleBarLocation(mReleasedLocation,
+                        BubbleBarLocation.UpdateSource.DRAG_BUBBLE);
                 mBubbleBarViewController.onBubbleDragEnd();
                 mBubblePinController.setListener(null);
             }
@@ -226,7 +227,8 @@
             @Override
             void onDragEnd() {
                 // Make sure to update location as the first thing. Pivot update causes a relayout
-                mBubbleBarController.updateBubbleBarLocation(mReleasedLocation);
+                mBubbleBarController.updateBubbleBarLocation(mReleasedLocation,
+                        BubbleBarLocation.UpdateSource.DRAG_BAR);
                 bubbleBarView.setIsDragging(false);
                 // Restoring the initial pivot for the bubble bar view
                 bubbleBarView.setRelativePivot(initialRelativePivot.x, initialRelativePivot.y);
diff --git a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleView.java b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleView.java
index 114edf4..e74357c 100644
--- a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleView.java
+++ b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleView.java
@@ -222,12 +222,14 @@
         }
         if (action == R.id.action_move_left) {
             if (mController != null) {
-                mController.updateBubbleBarLocation(BubbleBarLocation.LEFT);
+                mController.updateBubbleBarLocation(BubbleBarLocation.LEFT,
+                        BubbleBarLocation.UpdateSource.A11Y_ACTION_BUBBLE);
             }
         }
         if (action == R.id.action_move_right) {
             if (mController != null) {
-                mController.updateBubbleBarLocation(BubbleBarLocation.RIGHT);
+                mController.updateBubbleBarLocation(BubbleBarLocation.RIGHT,
+                        BubbleBarLocation.UpdateSource.A11Y_ACTION_BUBBLE);
             }
         }
         return false;
@@ -456,6 +458,7 @@
         void collapse();
 
         /** Request bubble bar location to be updated to the given location */
-        void updateBubbleBarLocation(BubbleBarLocation location);
+        void updateBubbleBarLocation(BubbleBarLocation location,
+                @BubbleBarLocation.UpdateSource int source);
     }
 }
diff --git a/quickstep/src/com/android/quickstep/SystemUiProxy.java b/quickstep/src/com/android/quickstep/SystemUiProxy.java
index 73e22bb..054181f 100644
--- a/quickstep/src/com/android/quickstep/SystemUiProxy.java
+++ b/quickstep/src/com/android/quickstep/SystemUiProxy.java
@@ -885,10 +885,12 @@
     /**
      * Tells SysUI to update the bubble bar location to the new location.
      * @param location new location for the bubble bar
+     * @param source what triggered the location update
      */
-    public void setBubbleBarLocation(BubbleBarLocation location) {
+    public void setBubbleBarLocation(BubbleBarLocation location,
+            @BubbleBarLocation.UpdateSource int source) {
         try {
-            mBubbles.setBubbleBarLocation(location);
+            mBubbles.setBubbleBarLocation(location, source);
         } catch (RemoteException e) {
             Log.w(TAG, "Failed call setBubbleBarLocation");
         }