Improve accessibility for notification shelf on lock screen

We added the "Expand" action before to make it clear that the user can
expand the Shelf. But the action didn't have any affect at the time of
addition. This change links the action to the clicking action, which
expands the notification shade. Note that both click and expand actions
have the same effect, which is as intended.

Fix: 378385684
Flag: EXEMPT bugfix
Test: atest Manual, disable "Auto-select" for the Switch Access and
enable Switch Access, select the NotificationShelf on lockscreen. The
action "Expand" should expand the notification shade.

Change-Id: I5b020dbe7c4d79b24b869eb6209b4a59852ba323

1 files changed, 18 insertions, 4 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShelf.java b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShelf.java
index 48cf7a83c324..155049f512d8 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShelf.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/NotificationShelf.java
@@ -23,6 +23,7 @@ import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.graphics.Rect;
+import android.os.Bundle;
 import android.util.AttributeSet;
 import android.util.IndentingPrintWriter;
 import android.util.MathUtils;
@@ -30,6 +31,7 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.view.ViewTreeObserver;
 import android.view.accessibility.AccessibilityNodeInfo;
+import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction;
 import android.view.animation.Interpolator;
 import android.view.animation.PathInterpolator;
 
@@ -1014,12 +1016,24 @@ public class NotificationShelf extends ActivatableNotificationView {
     public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
         super.onInitializeAccessibilityNodeInfo(info);
         if (mInteractive) {
+            // Add two accessibility actions that both performs expanding the notification shade
             info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_EXPAND);
-            AccessibilityNodeInfo.AccessibilityAction unlock
-                    = new AccessibilityNodeInfo.AccessibilityAction(
+
+            AccessibilityAction seeAll = new AccessibilityAction(
                     AccessibilityNodeInfo.ACTION_CLICK,
-                    getContext().getString(R.string.accessibility_overflow_action));
-            info.addAction(unlock);
+                    getContext().getString(R.string.accessibility_overflow_action)
+            );
+            info.addAction(seeAll);
+        }
+    }
+
+    @Override
+    public boolean performAccessibilityAction(int action, Bundle args) {
+        // override ACTION_EXPAND with ACTION_CLICK
+        if (action == AccessibilityNodeInfo.ACTION_EXPAND) {
+            return super.performAccessibilityAction(AccessibilityNodeInfo.ACTION_CLICK, args);
+        } else {
+            return super.performAccessibilityAction(action, args);
         }
     }