Merge "Events for window's content change should be dispatched only for the...

        private int mActiveWindowId;

        private boolean canDispatchAccessibilityEvent(AccessibilityEvent event) {

            // Send window changed event only for the retrieval allowing window.

            return (event.getEventType() != AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED

                    || event.getWindowId() == mActiveWindowId);

            final int eventType = event.getEventType();

            switch (eventType) {

                // All events that are for changes in a global window

                // state should *always* be dispatched.

                case AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED:

                case AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED:

                // All events generated by the user touching the

                // screen should *always* be dispatched.

                case AccessibilityEvent.TYPE_TOUCH_EXPLORATION_GESTURE_START:

                case AccessibilityEvent.TYPE_TOUCH_EXPLORATION_GESTURE_END:

                case AccessibilityEvent.TYPE_GESTURE_DETECTION_START:

                case AccessibilityEvent.TYPE_GESTURE_DETECTION_END:

                case AccessibilityEvent.TYPE_TOUCH_INTERACTION_START:

                case AccessibilityEvent.TYPE_TOUCH_INTERACTION_END:

                // These will change the active window, so dispatch.

                case AccessibilityEvent.TYPE_VIEW_HOVER_ENTER:

                case AccessibilityEvent.TYPE_VIEW_HOVER_EXIT: {

                    return true;

                }

                // All events for changes in window content should be

                // dispatched *only* if this window is the active one.

                default:

                    return event.getWindowId() == mActiveWindowId;

            }

        }

        public void updateEventSourceLocked(AccessibilityEvent event) {