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Commit 19d214bd authored by Jacky Kao's avatar Jacky Kao
Browse files

Sending A11y events when a view becomes invisible. 

Making the A11y event sending to A11y services when a view becomes
invisible if the ancestors of this view are all visible, and this view
becomes invisible from visible.

Bug: 130273130
Test: a11y CTS & unit tests
Change-Id: I836d3e34c7a9cba31843d34922b7ba02a8a062f0
parent c5caed0c

core/java/android/view/View.java

+18 −1
Original line number Diff line number Diff line
@@ -13800,6 +13800,17 @@ public class View implements Drawable.Callback, KeyEvent.Callback, 
        }

    }













    private void notifySubtreeAccessibilityStateChangedByParentIfNeeded() {













        if (!AccessibilityManager.getInstance(mContext).isEnabled()) {













            return;













        }

























        final View sendA11yEventView = (View) getParentForAccessibility();













        if (sendA11yEventView != null && sendA11yEventView.isShown()) {













            sendA11yEventView.notifySubtreeAccessibilityStateChangedIfNeeded();













        }













    }



























    /**















     * Changes the visibility of this View without triggering any other changes. This should only















     * be used by animation frameworks, such as {@link android.transition.Transition}, where










@@ -16229,9 +16240,15 @@ public class View implements Drawable.Callback, KeyEvent.Callback,













                        ((!(mParent instanceof ViewGroup)) || ((ViewGroup) mParent).isShown())) {















                    dispatchVisibilityAggregated(newVisibility == VISIBLE);















                }













                // If this view is invisible from visible, then sending the A11y event by its













                // parent which is shown and has the accessibility important.













                if ((old & VISIBILITY_MASK) == VISIBLE) {













                    notifySubtreeAccessibilityStateChangedByParentIfNeeded();













                } else {















                    notifySubtreeAccessibilityStateChangedIfNeeded();















                }















            }













        }





























        if ((changed & WILL_NOT_CACHE_DRAWING) != 0) {















            destroyDrawingCache();