Accessibility: Ensure fresh accessilbity focused and input focused nodes.

Change-Id: Ia3c84284843a415cdbbc2b6a9b06d9ddffbe0e04

diff --git a/core/java/android/view/accessibility/AccessibilityCache.java b/core/java/android/view/accessibility/AccessibilityCache.java
index 52912b1..d0dde00 100644 (file)
--- a/core/java/android/view/accessibility/AccessibilityCache.java
+++ b/core/java/android/view/accessibility/AccessibilityCache.java
@@ -40,6 +40,9 @@ final class AccessibilityCache {
 
     private final Object mLock = new Object();
 
+    private long mAccessibilityFocus = AccessibilityNodeInfo.UNDEFINED_ITEM_ID;
+    private long mInputFocus = AccessibilityNodeInfo.UNDEFINED_ITEM_ID;
+
     private final SparseArray<AccessibilityWindowInfo> mWindowCache =
             new SparseArray<>();
 
@@ -73,9 +76,29 @@ final class AccessibilityCache {
         synchronized (mLock) {
             final int eventType = event.getEventType();
             switch (eventType) {
-                case AccessibilityEvent.TYPE_VIEW_FOCUSED:
-                case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED:
-                case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED:
+                case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: {
+                    if (mAccessibilityFocus != AccessibilityNodeInfo.UNDEFINED_ITEM_ID) {
+                        refreshCachedNodeLocked(event.getWindowId(), mAccessibilityFocus);
+                    }
+                    mAccessibilityFocus = event.getSourceNodeId();
+                    refreshCachedNodeLocked(event.getWindowId(), mAccessibilityFocus);
+                } break;
+
+                case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: {
+                    if (mAccessibilityFocus == event.getSourceNodeId()) {
+                        refreshCachedNodeLocked(event.getWindowId(), mAccessibilityFocus);
+                        mAccessibilityFocus = AccessibilityNodeInfo.UNDEFINED_ITEM_ID;
+                    }
+                } break;
+
+                case AccessibilityEvent.TYPE_VIEW_FOCUSED: {
+                    if (mInputFocus != AccessibilityNodeInfo.UNDEFINED_ITEM_ID) {
+                        refreshCachedNodeLocked(event.getWindowId(), mInputFocus);
+                    }
+                    mInputFocus = event.getSourceNodeId();
+                    refreshCachedNodeLocked(event.getWindowId(), mInputFocus);
+                } break;
+
                 case AccessibilityEvent.TYPE_VIEW_SELECTED:
                 case AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED:
                 case AccessibilityEvent.TYPE_VIEW_CLICKED:
@@ -268,6 +291,9 @@ final class AccessibilityCache {
                 final int windowId = mNodeCache.keyAt(i);
                 clearNodesForWindowLocked(windowId);
             }
+
+            mAccessibilityFocus = AccessibilityNodeInfo.UNDEFINED_ITEM_ID;
+            mInputFocus = AccessibilityNodeInfo.UNDEFINED_ITEM_ID;
         }
     }