Adding some more gestures and actions for accessibility.

1. Added more gesture for accessibility. After a meeting
   with the access-eng team we have decided that the current
   set of gestures may be smaller than needed considering
   that we will use four gestures for home, back, recents,
   and notifications.

2. Adding actions for going back, home, opening the recents,
   and opening the notifications.

3. Added preliminary mapping from some of the new gestures
   to the new actions.

4. Fixed a bug in the accessibility interaction controller
   which was trying to create a handled on the main looper
   thread which may be null if the queried UI is in the
   system process. Now the context looper of the root view
   is used.

5. Fixed a bug of using an incorrect constant.

6. Added a missing locking in a couple of places.

7. Fixed view comparison for accessibilityt since it was
   not anisymmetric.

bug:5932640
bug:5605641

Change-Id: Icc983bf4eafefa42b65920b3782ed8a25518e94f

1 files changed, 6 insertions, 3 deletions

diff --git a/core/java/android/view/AccessibilityInteractionController.java b/core/java/android/view/AccessibilityInteractionController.java
index 6c1a6bf1bdf9..54c62ee83a12 100644
--- a/core/java/android/view/AccessibilityInteractionController.java
+++ b/core/java/android/view/AccessibilityInteractionController.java
@@ -52,13 +52,16 @@ final class AccessibilityInteractionController {
     private ArrayList<AccessibilityNodeInfo> mTempAccessibilityNodeInfoList =
         new ArrayList<AccessibilityNodeInfo>();
 
-    private final Handler mHandler = new PrivateHandler();
+    private final Handler mHandler;
 
     private final ViewRootImpl mViewRootImpl;
 
     private final AccessibilityNodePrefetcher mPrefetcher;
 
     public AccessibilityInteractionController(ViewRootImpl viewRootImpl) {
+        // mView is never null - the caller has already checked.
+        Looper looper = viewRootImpl.mView.mContext.getMainLooper();
+        mHandler = new PrivateHandler(looper);
         mViewRootImpl = viewRootImpl;
         mPrefetcher = new AccessibilityNodePrefetcher();
     }
@@ -846,8 +849,8 @@ final class AccessibilityInteractionController {
         private final static int MSG_FIND_FOCUS = 5;
         private final static int MSG_FOCUS_SEARCH = 6;
 
-        public PrivateHandler() {
-            super(Looper.getMainLooper());
+        public PrivateHandler(Looper looper) {
+            super(looper);
         }
 
         @Override