Support the feature of Drag to remove for the Accessibility Floating Menu(3/n).

Action:
For Talkback users, support the accessibility action of the message view with the undo action.

Bug: 237716018
Bug: 251688823
Test: atest MenuItemAccessibilityDelegateTest
Change-Id: Ie2f602729f5c3322decee4a09894b4df78cda4ea

packages/SystemUI/res/values/ids.xml

@@ -177,6 +177,7 @@
     <item type="id" name="action_move_bottom_right"/>
     <item type="id" name="action_move_to_edge_and_hide"/>
     <item type="id" name="action_move_out_edge_and_show"/>
+    <item type="id" name="action_remove_menu"/>
 
     <!-- rounded corner view id -->
     <item type="id" name="rounded_corner_top_left"/>

packages/SystemUI/res/values/strings.xml

@@ -2218,6 +2218,8 @@
     <string name="accessibility_floating_button_action_move_to_edge_and_hide_to_half">Move to edge and hide</string>
     <!-- Action in accessibility menu to move the accessibility floating button out the edge and show. [CHAR LIMIT=36]-->
     <string name="accessibility_floating_button_action_move_out_edge_and_show">Move out edge and show</string>
+    <!-- Action in accessibility menu to remove the accessibility floating menu view on the screen. [CHAR LIMIT=36]-->
+    <string name="accessibility_floating_button_action_remove_menu">Remove</string>
     <!-- Action in accessibility menu to toggle on/off the accessibility feature. [CHAR LIMIT=30]-->
     <string name="accessibility_floating_button_action_double_tap_to_toggle">toggle</string>
 

packages/SystemUI/src/com/android/systemui/accessibility/floatingmenu/DismissAnimationController.java

@@ -172,4 +172,8 @@ class DismissAnimationController implements ComponentCallbacks {
                 R.dimen.dismiss_circle_small);
         mSizePercent = mMinDismissSize / maxDismissSize;
     }
+
+    interface DismissCallback {
+        void onDismiss();
+    }
 }

packages/SystemUI/src/com/android/systemui/accessibility/floatingmenu/MenuAnimationController.java

@@ -35,6 +35,8 @@ import androidx.dynamicanimation.animation.SpringAnimation;
 import androidx.dynamicanimation.animation.SpringForce;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.android.internal.util.Preconditions;
+
 import java.util.HashMap;
 
 /**
@@ -64,6 +66,7 @@ class MenuAnimationController {
     private final Handler mHandler;
     private boolean mIsMovedToEdge;
     private boolean mIsFadeEffectEnabled;
+    private DismissAnimationController.DismissCallback mDismissCallback;
 
     // Cache the animations state of {@link DynamicAnimation.TRANSLATION_X} and {@link
     // DynamicAnimation.TRANSLATION_Y} to be well controlled by the touch handler
@@ -102,6 +105,11 @@ class MenuAnimationController {
         }
     }
 
+    void setDismissCallback(
+            DismissAnimationController.DismissCallback dismissCallback) {
+        mDismissCallback = dismissCallback;
+    }
+
     void moveToTopLeftPosition() {
         mIsMovedToEdge = false;
         final Rect draggableBounds = mMenuView.getMenuDraggableBounds();
@@ -132,6 +140,13 @@ class MenuAnimationController {
         constrainPositionAndUpdate(position);
     }
 
+    void removeMenu() {
+        Preconditions.checkArgument(mDismissCallback != null,
+                "The dismiss callback should be initialized first.");
+
+        mDismissCallback.onDismiss();
+    }
+
     void flingMenuThenSpringToEdge(float x, float velocityX, float velocityY) {
         final boolean shouldMenuFlingLeft = isOnLeftSide()
                 ? velocityX < ESCAPE_VELOCITY

packages/SystemUI/src/com/android/systemui/accessibility/floatingmenu/MenuItemAccessibilityDelegate.java

@@ -84,6 +84,12 @@ class MenuItemAccessibilityDelegate extends RecyclerViewAccessibilityDelegate.It
                 new AccessibilityNodeInfoCompat.AccessibilityActionCompat(moveEdgeId,
                         res.getString(moveEdgeTextResId));
         info.addAction(moveToOrOutEdge);
+
+        final AccessibilityNodeInfoCompat.AccessibilityActionCompat removeMenu =
+                new AccessibilityNodeInfoCompat.AccessibilityActionCompat(
+                        R.id.action_remove_menu,
+                        res.getString(R.string.accessibility_floating_button_action_remove_menu));
+        info.addAction(removeMenu);
     }
 
     @Override
@@ -126,6 +132,11 @@ class MenuItemAccessibilityDelegate extends RecyclerViewAccessibilityDelegate.It
             return true;
         }
 
+        if (action == R.id.action_remove_menu) {
+            mAnimationController.removeMenu();
+            return true;
+        }
+
         return super.performAccessibilityAction(host, action, args);
     }
 }

packages/SystemUI/src/com/android/systemui/accessibility/floatingmenu/MenuViewLayer.java

@@ -100,6 +100,7 @@ class MenuViewLayer extends FrameLayout {
                 windowManager);
         mMenuView = new MenuView(context, menuViewModel, menuViewAppearance);
         mMenuAnimationController = mMenuView.getMenuAnimationController();
+        mMenuAnimationController.setDismissCallback(this::hideMenuAndShowMessage);
 
         mDismissView = new DismissView(context);
         mDismissAnimationController = new DismissAnimationController(mDismissView, mMenuView);

packages/SystemUI/tests/src/com/android/systemui/accessibility/floatingmenu/MenuItemAccessibilityDelegateTest.java

@@ -43,6 +43,7 @@ import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+import org.mockito.Mock;
 import org.mockito.junit.MockitoJUnit;
 import org.mockito.junit.MockitoRule;
 
@@ -54,6 +55,9 @@ public class MenuItemAccessibilityDelegateTest extends SysuiTestCase {
     @Rule
     public MockitoRule mockito = MockitoJUnit.rule();
 
+    @Mock
+    private DismissAnimationController.DismissCallback mStubDismissCallback;
+
     private RecyclerView mStubListView;
     private MenuView mMenuView;
     private MenuItemAccessibilityDelegate mMenuItemAccessibilityDelegate;
@@ -87,7 +91,7 @@ public class MenuItemAccessibilityDelegateTest extends SysuiTestCase {
 
         mMenuItemAccessibilityDelegate.onInitializeAccessibilityNodeInfo(mStubListView, info);
 
-        assertThat(info.getActionList().size()).isEqualTo(5);
+        assertThat(info.getActionList().size()).isEqualTo(6);
     }
 
     @Test
@@ -155,6 +159,17 @@ public class MenuItemAccessibilityDelegateTest extends SysuiTestCase {
         verify(mMenuAnimationController).moveOutEdgeAndShow();
     }
 
+    @Test
+    public void performRemoveMenuAction_success() {
+        mMenuAnimationController.setDismissCallback(mStubDismissCallback);
+        final boolean removeMenuAction =
+                mMenuItemAccessibilityDelegate.performAccessibilityAction(mStubListView,
+                        R.id.action_remove_menu, null);
+
+        assertThat(removeMenuAction).isTrue();
+        verify(mMenuAnimationController).removeMenu();
+    }
+
     @Test
     public void performFocusAction_fadeIn() {
         mMenuItemAccessibilityDelegate.performAccessibilityAction(mStubListView,