1. Added a new event type for notifying client accessibilitiy
services for changes in the layout. The event is fired at
most once for a given time frame and is delivered to clients
only if it originates from the window that can be interrogated.
2. Exposed the findByText functionality in AccessibilityNodeInfo.
This is very useful for an accessibility service since it allows
searching for something the user knows is on the screen thus
avoiding touch exploring the content. Touch exploring is
excellent for learning the apps but knowing them search is
much faster.
3. Fixed a bug causing an accessibiliby service not to receive
the event source in case of more than one service is registered
and one of them does not have paermission to interrogate the window.
The same event was dispatched to multiple services but if one
of them does not have interrogation permission the event is
modified to remove the source causing subsequent serivices not
to get the later.
4. Moved the getSource setSource methods to AccessibilityRecord
instead in AccessibilityEvent.
5. Hiden some protected members in AccessibilityRecod which should
not be made public since getters exist.
6. Added the View absolute coordinates in the screen to AccessibilityNodeInfo.
This is needed for fast computation of relative positions of
views from accessibility - common use case for the later.
7. Fixed a couple of marshalling bugs.
8. Added a test for the object contract of AccessibilityNodeInfo.
Change-Id: Id9dc50c33aff441e4c93d25ea316c9bbc4bd7a35
This change adds a generic Property facility to the SDK, which allows an
easy way to reference fields (private or otherwise) in a general way.
For example, animations can use this facility to animate 'properties'
on target objects in a way that is more code- and compiler-friendly than
the existing String-based approach (for objects which have implemented
Properties, of course). The animator classes have been updated to use
this new approach (in addition to Strings, which are still more generally
useful for objects which have get/set functions but not Property objects).
The change also includes new Property objects on View (which can now be
used in creating animations on Views).
There is an unrelated change on GLES20RecordingCanvas to change the way we
cache bitmaps, which avoids spurious garbage by using an ArrayList instead of
a HashSet.
Change-Id: I167b43a3fca20e7695b1a23ca81274367539acda
1. Views are represented as AccessibilityNodeInfos to AccessibilityServices.
2. An accessibility service receives AccessibilityEvents and can ask
for its source and gets an AccessibilityNodeInfo which can be used
to get its parent and children infos and so on.
3. AccessibilityNodeInfo contains some attributes and actions that
can be performed on the source.
4. AccessibilityService can request the system to preform an action
on the source of an AccessibilityNodeInfo.
5. ViewAncestor provides an interaction connection to the
AccessibiltyManagerService and an accessibility service uses
its connection to the latter to interact with screen content.
6. AccessibilityService can interact ONLY with the focused window
and all calls are routed through the AccessibilityManagerService
which imposes security.
7. Hidden APIs on AccessibilityService can find AccessibilityNodeInfos
based on some criteria. These API go through the AccessibilityManagerServcie
for security check.
8. Some actions are hidden and are exposes only to eng builds for UI testing.
Change-Id: Ie34fa4219f350eb3f4f6f9f45b24f709bd98783c
1. Updated the 14.txt with the new methods in Accessibility record
since I made a mistake duing that. I had to do this because
I have factored out some stuff from AccessibilityEvent to
AccessibilityRecord and the API check does not detect that the
APIs have not changed.
Change-Id: Ieed504634e0af909eada16f58f922cb78cb841ba
