Merge "Add tooltip for taskbar overflow button" into main

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

@@ -134,6 +134,8 @@ public class TaskbarHoverToolTipController implements View.OnHoverListener {
             return icon.mInfo.title.toString();
         } else if (mHoverView instanceof AppPairIcon icon) {
             return icon.getTitleTextView().getText().toString();
+        } else if (mHoverView instanceof TaskbarOverflowView icon) {
+            return icon.getTextForTooltipPopup();
         } else {
             return null;
         }

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

@@ -39,6 +39,7 @@ import androidx.annotation.VisibleForTesting;
 import androidx.core.graphics.ColorUtils;
 
 import com.android.app.animation.Interpolators;
+import com.android.launcher3.R;
 import com.android.launcher3.Reorderable;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.icons.IconNormalizer;
@@ -339,6 +340,17 @@ public class TaskbarOverflowView extends FrameLayout implements Reorderable {
         }
     }
 
+    /**
+     * @return Tooltip to be used for the taskbar overflow view - returns null if the view should
+     *         not have a tooltip.
+     */
+    public String getTextForTooltipPopup() {
+        if (mIsActive) {
+            return null;
+        }
+        return getResources().getString(R.string.taskbar_overflow_a11y_title);
+    }
+
     /**
      * Returns the view's state (whether it shows a set of app icons or a leave-behind circle).
      */

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

@@ -363,6 +363,9 @@ public class TaskbarView extends FrameLayout implements FolderIcon.FolderIconPar
                     mControllerCallbacks.getOverflowOnClickListener());
             mTaskbarOverflowView.setOnLongClickListener(
                     mControllerCallbacks.getOverflowOnLongClickListener());
+            if (enableCursorHoverStates()) {
+                setHoverListenerForIcon(mTaskbarOverflowView);
+            }
         }
 
         if (ENABLE_TASKBAR_OVERFLOW.isTrue()) {