Fix notification snooze a11y issues

- Set minimum height and width on the snooze "undo" button
- Update logic in performAccessibilityActionInternal in
ExpandableNotificationRow so that snoozing a notification from
Talkback/switch access/voice access actually performs the snooze action
- After a user selects a new snooze time option for a notification, the
snooze options close. Focus should remain on the snooze time, since that
element was just changed.
- Once a user snoozes a notification, it should focus on the child
SnoozeView instead of the greater NotificationSnooze view because only
the SnoozeView is actionable. So if focus is requested on the
NotificationSnooze view and the options aren't expanded, then focus just
on the SnoozeView.

Test: manual, use a11y scanner
Fixes: 152730944
Fixes: 152820361
Fixes: 152720315
Fixes: 152718852
Change-Id: I7e43bddfdaa3b5a1741645f7bb54af42bc953fc3

Change-Id: I4672654d4ca2eb2cf68539efb7cfb0c8f5dfb00b

packages/SystemUI/res/layout/notification_snooze.xml

@@ -20,7 +20,6 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="vertical"
-    android:clickable="true"
     android:background="@color/notification_material_background_color"
     android:theme="@style/Theme.SystemUI">
 
@@ -55,6 +54,8 @@
             android:layout_marginEnd="@dimen/notification_guts_button_side_margin"
             android:layout_alignParentEnd="true"
             android:layout_centerVertical="true"
+            android:minWidth="@dimen/min_clickable_item_size"
+            android:minHeight="@dimen/min_clickable_item_size"
             android:text="@string/snooze_undo"
             style="@style/TextAppearance.NotificationInfo.Button" />
     </RelativeLayout>

packages/SystemUI/res/values/dimens.xml

@@ -16,6 +16,9 @@
 */
 -->
 <resources>
+    <!-- Recommended minimum clickable element dimension -->
+    <dimen name="min_clickable_item_size">48dp</dimen>
+
     <!-- Amount to offset bottom of notification peek window from top of status bar. -->
     <dimen name="peek_window_y_offset">-12dp</dimen>
 

packages/SystemUI/src/com/android/systemui/statusbar/notification/row/ExpandableNotificationRow.java

@@ -3001,9 +3001,7 @@ public class ExpandableNotificationRow extends ActivatableNotificationView
             default:
                 if (action == R.id.action_snooze) {
                     NotificationMenuRowPlugin provider = getProvider();
-                    if (provider == null && mMenuRow != null) {
-                        provider = createMenu();
-                    } else {
+                    if (provider == null) {
                         return false;
                     }
                     MenuItem snoozeMenu = provider.getSnoozeMenuItem(getContext());

packages/SystemUI/src/com/android/systemui/statusbar/notification/row/NotificationSnooze.java

@@ -79,6 +79,7 @@ public class NotificationSnooze extends LinearLayout
     private NotificationSwipeActionHelper mSnoozeListener;
     private StatusBarNotification mSbn;
 
+    private View mSnoozeView;
     private TextView mSelectedOptionText;
     private TextView mUndoButton;
     private ImageView mExpandButton;
@@ -122,7 +123,8 @@ public class NotificationSnooze extends LinearLayout
     protected void onFinishInflate() {
         super.onFinishInflate();
         mCollapsedHeight = getResources().getDimensionPixelSize(R.dimen.snooze_snackbar_min_height);
-        findViewById(R.id.notification_snooze).setOnClickListener(this);
+        mSnoozeView = findViewById(R.id.notification_snooze);
+        mSnoozeView.setOnClickListener(this);
         mSelectedOptionText = (TextView) findViewById(R.id.snooze_option_default);
         mUndoButton = (TextView) findViewById(R.id.undo);
         mUndoButton.setOnClickListener(this);
@@ -146,16 +148,6 @@ public class NotificationSnooze extends LinearLayout
         logOptionSelection(MetricsEvent.NOTIFICATION_SNOOZE_CLICKED, mDefaultOption);
     }
 
-    @Override
-    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
-        super.onInitializeAccessibilityEvent(event);
-        if (mGutsContainer != null && mGutsContainer.isExposed()) {
-            if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
-                event.getText().add(mSelectedOptionText.getText());
-            }
-        }
-    }
-
     @Override
     public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
         super.onInitializeAccessibilityNodeInfo(info);
@@ -341,12 +333,22 @@ public class NotificationSnooze extends LinearLayout
         mSelectedOptionText.setText(option.getConfirmation());
         showSnoozeOptions(false);
         hideSelectedOption();
-        sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
         if (userAction) {
+            mSnoozeView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED);
             logOptionSelection(MetricsEvent.NOTIFICATION_SELECT_SNOOZE, option);
         }
     }
 
+    @Override
+    public boolean requestAccessibilityFocus() {
+        if (mExpanded) {
+            return super.requestAccessibilityFocus();
+        } else {
+            mSnoozeView.requestAccessibilityFocus();
+            return false;
+        }
+    }
+
     private void logOptionSelection(int category, SnoozeOption option) {
         int index = mSnoozeOptions.indexOf(option);
         long duration = TimeUnit.MINUTES.toMillis(option.getMinutesToSnoozeFor());