Accessibility active window not updated on time.

1. The active window is the one the user is touching or the one
   that has input focus. It has to be made current immediately
   after the user has stopped touching the screen because if the
   user types with the IME he should get a feedback for the
   letter typed in the text view which is in the input focused
   window. Note that we always deliver hover accessibility events
   (they are a result of user touching the screen) so change of
   the active window before all hover accessibility events from
   the touched window are delivered is fine.

bug:7296890

Change-Id: I1ae87c8419e2f19bd8eb68de084c7117c66894bc

Author: sganov

services/java/com/android/server/accessibility/AccessibilityManagerService.java

@@ -643,6 +643,10 @@ int getActiveWindowId() {
         return mSecurityPolicy.mActiveWindowId;
     }
 
+    void onTouchInteractionEnd() {
+        mSecurityPolicy.onTouchInteractionEnd();
+    }
+
     private void switchUser(int userId) {
         synchronized (mLock) {
             // The user switched so we do not need to restore the current user
@@ -2178,16 +2182,24 @@ public void updateActiveWindow(int windowId, int eventType) {
                         mActiveWindowId = windowId;
                     }
                 } break;
-                case AccessibilityEvent.TYPE_VIEW_HOVER_ENTER:
-                case AccessibilityEvent.TYPE_VIEW_HOVER_EXIT: {
+                case AccessibilityEvent.TYPE_VIEW_HOVER_ENTER: {
                     mActiveWindowId = windowId;
                 } break;
-                case AccessibilityEvent.TYPE_TOUCH_INTERACTION_END: {
-                    mActiveWindowId = getFocusedWindowId();
-                } break;
             }
         }
 
+        public void onTouchInteractionEnd() {
+            // We want to set the active window to be current immediately
+            // after the user has stopped touching the screen since if the
+            // user types with the IME he should get a feedback for the
+            // letter typed in the text view which is in the input focused
+            // window. Note that we always deliver hover accessibility events
+            // (they are a result of user touching the screen) so change of
+            // the active window before all hover accessibility events from
+            // the touched window are delivered is fine.
+            mActiveWindowId = getFocusedWindowId();
+        }
+
         public int getRetrievalAllowingWindowLocked() {
             return mActiveWindowId;
         }

services/java/com/android/server/accessibility/TouchExplorer.java

@@ -304,6 +304,7 @@ private void clear(MotionEvent event, int policyFlags) {
             mNext.clear();
         }
         mTouchExplorationInProgress = false;
+        mAms.onTouchInteractionEnd();
     }
 
     @Override
@@ -615,6 +616,7 @@ private void handleMotionEventStateTouchExploring(MotionEvent event, MotionEvent
                 }
             } break;
             case MotionEvent.ACTION_UP:
+                mAms.onTouchInteractionEnd();
                 // We know that we do not need the pre-fed gesture points are not
                 // needed anymore since the last pointer just went up.
                 mStrokeBuffer.clear();
@@ -737,6 +739,7 @@ private void handleMotionEventStateDragging(MotionEvent event, int policyFlags)
                  }
             } break;
             case MotionEvent.ACTION_UP: {
+                mAms.onTouchInteractionEnd();
                 // Announce the end of a new touch interaction.
                 sendAccessibilityEvent(
                         AccessibilityEvent.TYPE_TOUCH_INTERACTION_END);
@@ -782,6 +785,7 @@ private void handleMotionEventStateDelegating(MotionEvent event, int policyFlags
                         AccessibilityEvent.TYPE_TOUCH_INTERACTION_END);
                 //$FALL-THROUGH$
             case MotionEvent.ACTION_POINTER_UP: {
+                mAms.onTouchInteractionEnd();
                 mLongPressingPointerId = -1;
                 mLongPressingPointerDeltaX = 0;
                 mLongPressingPointerDeltaY = 0;
@@ -819,6 +823,7 @@ private void handleMotionEventGestureDetecting(MotionEvent event, int policyFlag
                 }
             } break;
             case MotionEvent.ACTION_UP: {
+                mAms.onTouchInteractionEnd();
                 // Announce the end of gesture recognition.
                 sendAccessibilityEvent(
                         AccessibilityEvent.TYPE_GESTURE_DETECTION_END);