1. Scrolling actions are crucial for enabling a gesture based
traversal of the UI and specifically scrollable containers
especially lists and anything backed by an adapter. Since
accessibility focus can land only attached views, it cannot
visit views for adapter items not shown on the screen.
Auto scrolling the list as a result of putting access focus
ot a list item does not work well since the user may get
trapped in a long list. Adding an accessibility node provider
to emit virtual views for one view before the first and one
after the last is complex and suffers the limitation of trapping
the user. Accessibility service need an explicit scroll actions
which may be performed upon an explicit user action. Hence,
the user is informed for the start/end of the visible part of
the list and he makes a deliberate choice to scroll. This will
benefit also people developing Braille devices since they can
scroll the content without telling the user to stop using the
Braille controller and take the device out of his pocket to scroll
and go back to the Braille controller.
NOTE: Without these action large portions of the screen will be
hard to access since users will have to touch and explore to
find and scroll the list.
Change-Id: Iafcf54d4967893205872b3649025a4e347a299ed
1. Delegating activation gestures has several issues that we should
decide how to handle if possible before allowing an accessibility
service to take over them:
A) It is needed that every view than can be clicked or long pressed on
reacts to such as a response to calling performClick and performLongPress
which is not necessary true since the view may watch the touch
events and do its own click long click detection. As a result it may
be possible that there are view a user cannot interact with in
touch exploration mode but can if not in that mode.
B) Clicking or long pressing on a different location in a view may yield
different results, for example NumberPicker. Ideally such views have
to implement AccessibilityNodeProvide which provider handles correctly
the request for click long press on virtual nodes. Some apps however
just fire different hover accessibility events when the user is over
a specific semantic portion of the view but do not provide virtual
nodes. Hence, a user will not be able to interact with such semantic
regions but the system can achieve that by sending the click/long click
at the precise location in the view that was last touch explored.
2. Adding a flag on accessibility service info to request explore by touch
mode. There is no need to put the device in this mode if node of the currently
enabled accessibility services supports it. Now the problem is inverted and
the service has to explicitly state its capability.
3. Fixing a bug where includeImportantViews was ignored for automation
services.
Change-Id: I3b29a19f24ab5e26ee29f974bbac2197614c9e2a
- Remove the notion of channel from an application perspective
- Remove the use of DnsSd as part of API and add a protocol type to allow
future extensions
- Use the listener object as a handler for stop and unregister operations. Also,
we now allow multiple active discovery operations.
- Remove init/deinit operations in favour of setting up construction
Bug:6434844
Change-Id: Id15521d571aac9c4053d81184ad66dfc54f636de
1. AccessibilityNodeInfos for visible views should always
be reported and the clients should be able to check
whether that node info is shown to the user. For example,
focus search may return a node that is not on the screen
and the accessibility layer may decide to give it focus
which scroll the source view in the screen.
bug:6421991
Change-Id: Idc1fd8512dda767abe802aacedb0c69582e6fc2a
1. Implementing text content navigation at various granularities.
For views that have content description but no text the
content description is the traversed at character and word
granularities. For views that inherit from TextView the
supported granularities are character, word, line, and page.
bug:5932640
Conflicts:
core/java/android/view/View.java
Conflicts:
core/java/android/view/View.java
Change-Id: I66d1e16ce9ac5d6b49f036b17c087b2a7075e4c0
Added bitmaps for permission group icons. We had to pick either
icons for a dark or light background, and it had to be light for
settings, so the installer theme has gone back to dark.
Tweaked the permission groups to match the icons.
Redid the group priorities to make them correct (they were written
with higher priorities being less important).
Fixed bug where priority was not being used for system apps.
Change-Id: Ia3d3f0c1614a11b4cfd11682ce9e6c9f87d75c06
1. Changed all references to granularity to movement
granularity. BTW, to be more precise it should be
text movement granularity.
bug:6435232
Change-Id: If6366b002ca3390f74918995b342baff2cbcfd01
