Draw leave-behind circle after pressing taskbar overflow button

This CL does not include animating app icons / leave behind circle.

Bug: 376281549
Flag: com.android.launcher3.taskbar_overflow
Test: press the oveflow button, dismiss KQS in different ways
Change-Id: I1f830c6859a5be4fb5947ec38e6d30da79138b7f

quickstep/src/com/android/launcher3/taskbar/TaskbarViewCallbacks.java

@@ -148,8 +148,7 @@ public class TaskbarViewCallbacks {
         return new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                mControllers.keyboardQuickSwitchController.toggleQuickSwitchViewForTaskbar(
-                        mControllers.taskbarViewController.getTaskIdsForPinnedApps());
+                toggleKeyboardQuickSwitchView();
             }
         };
     }
@@ -159,13 +158,28 @@ public class TaskbarViewCallbacks {
         return new View.OnLongClickListener() {
             @Override
             public boolean onLongClick(View v) {
-                mControllers.keyboardQuickSwitchController.toggleQuickSwitchViewForTaskbar(
-                        mControllers.taskbarViewController.getTaskIdsForPinnedApps());
+                toggleKeyboardQuickSwitchView();
                 return true;
             }
         };
     }
 
+    private void toggleKeyboardQuickSwitchView() {
+        if (mTaskbarView.getTaskbarOverflowView() != null) {
+            mTaskbarView.getTaskbarOverflowView().setIsActive(
+                    !mTaskbarView.getTaskbarOverflowView().getIsActive());
+        }
+        mControllers.keyboardQuickSwitchController.toggleQuickSwitchViewForTaskbar(
+                mControllers.taskbarViewController.getTaskIdsForPinnedApps(),
+                this::onKeyboardQuickSwitchViewClosed);
+    }
+
+    private void onKeyboardQuickSwitchViewClosed() {
+        if (mTaskbarView.getTaskbarOverflowView() != null) {
+            mTaskbarView.getTaskbarOverflowView().setIsActive(false);
+        }
+    }
+
     private float getDividerCenterX() {
         View divider = mTaskbarView.getTaskbarDividerViewContainer();
         if (divider == null) {