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
Note: This is a part of two CL change and contains the
system changes without updates to the settings.
1. Added a mechanism for configuring an accessibility service via
XML file specified in a meta-data tag (similar to IMEs).
2. Added property for specifying a settings activity for an
accessibility service.
3. Refactored the APIs in AccessibilityManager to return
lists of AccessiblityServiceInfo instead ServiceInfo
since the former describes an AccessibilityService in
particular (similar to IMEs).
Change-Id: Ie8781bb7e0cdb329e583b6702a612a507367ad7b
Also pretend to fix#2054990 (com.android.frameworktest: java.lang.NullPointerException
at android.accessibilityservice.AccessibilityService$IEventListenerWrapper.executeMessage(
AccessibilityService.java:215))... simply by making the variable that apparently was
null final, to assure myself that there is no possible way in the world for it to be
null. :p
Change-Id: I73e337d65b8360721896a0296691257b3e47564b
* AccessibilityService -- document onBind() to not be implemented.
* GestureLibrary.getLearner() -- needs to be hidden.
* IntentSender -- remove protected constructors, document that it is retrieved from a PendingIntent.
* Hide permissions: SHUTDOWN, STOP_APP_SWITCHES.
* Context -- hide BACKUP_SERVICE.
* ContextWrapper -- hide getSharedPrefs bla h blah
* Intent.parseUri() -- fix docs.
* ApplicationInfo.FLAG_TEST_ONLY?!?
* Hide MockContext.getSharedPrefs blah blah
