| eb9862fd4c6ba1745a0f6c997e85643a4ded0643 |
|
07-Sep-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Adding FEEDBACK_BRAILLE to AccessibilityServiceInfo.
1. The feedback type provided by braille devices differs from all
already predefined types and this change defines braille
feedback type. Braille does not fit in the already predefined
categories.
bug:6998945
Change-Id: Ide6043bed03fdecd6d2ee45a08762f5bd07a2118
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| 3ec2e1b94ab502bfa8d5e8750716108f69aa18d2 |
|
09-May-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Remove activation gestures form reported and add a touch explore requesting flag.
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
Conflicts:
api/current.txt
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| fefd20e927b7252d63acb7bb1852c5188e3c1b2e |
|
20-Apr-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Adding an opt-in mechanism for gesture detection in AccessibilityService.
1. An accessibility service has to explicitly opt in to be notified
for gestures by the system. There is only one accessibility service
that handles gestures and in case it does not handle a gesture
the system performs default handling. This default handling ensures
that we have gesture navigation even if no accessibility service
would like to participate/customize the interaction model.
bug:5932640
Change-Id: Id8194293bd94097b455e9388b68134a45dc3b8fa
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| 4213804541a8b05cd0587b138a2fd9a3b7fd9350 |
|
20-Mar-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Accessibility focus - framework
Usefulness: Keep track of the current user location in the screen when
traversing the it. Enabling structural and directional
navigation over all elements on the screen. This enables
blind users that know the application layout to efficiently
locate desired elements as opposed to try touch exploring the
region where the the element should be - very tedious.
Rationale: There are two ways to implement accessibility focus One is
to let accessibility services keep track of it since they
have access to the screen content, and another to let the view
hierarchy keep track of it. While the first approach would
require almost no work on our part it poses several challenges
which make it a sub-optimal choice. Having the accessibility focus
in the accessibility service would require that service to scrape
the window content every time it changes to sync the view tree
state and the accessibility focus location. Pretty much the service
will have to keep an off screen model of the screen content. This
could be quite challenging to get right and would incur performance
cost for the multiple IPCs to repeatedly fetch the screen content.
Further, keeping virtual accessibility focus (i.e. in the service)
would require sync of the input and accessibility focus. This could
be challenging to implement right as well. Also, having an unlimited
number of accessibility services we cannot guarantee that they will
have a proper implementation, if any, to allow users to perform structural
navigation of the screen content. Assuming two accessibility
services implement structural navigation via accessibility focus,
there is not guarantee that they will behave similarly by default,
i.e. provide some standard way to navigate the screen content.
Also feedback from experienced accessibility researchers, specifically
T.V Raman, provides evidence that having virtual accessibility focus
creates many issues and it is very hard to get right.
Therefore, keeping accessibility focus in the system will avoid
keeping an off-screen model in accessibility services, it will always
be in sync with the state of the view hierarchy and the input focus.
Also this will allow having a default behavior for traversing the
screen via this accessibility focus that is consistent in all
accessibility services. We provide accessibility services with APIs to
override this behavior but all of them will perform screen traversal
in a consistent way by default.
Behavior: If accessibility is enabled the accessibility focus is the leading one
and the input follows it. Putting accessibility focus on a view moves
the input focus there. Clearing the accessibility focus of a view, clears
the input focus of this view. If accessibility focus is on a view that
cannot take input focus, then no other view should have input focus.
In accessibility mode we initially give accessibility focus to the topmost
view and no view has input focus. This ensures consistent behavior accross
all apps. Note that accessibility focus can move hierarchically in the
view tree and having it at the root is better than putting it where the
input focus would be - at the first input focusable which could be at
an arbitrary depth in the view tree. By default not all views are reported
for accessibility, only the important ones. A view may be explicitly labeled
as important or not for accessibility, or the system determines which one
is such - default. Important views for accessibility are all views that are
not dumb layout managers used only to arrange their chidren. Since the same
content arrangement can be obtained via different combintation of layout
managers, such managers cannot be used to reliably determine the application
structure. For example, a user should see a list as a list view with several
list items and each list item as a text view and a button as opposed to seeing
all the layout managers used to arrange the list item's content.
By default only important for accessibility views are regared for accessibility
purposes. View not regarded for accessibility neither fire accessibility events,
nor are reported being on the screen. An accessibility service may request the
system to regard all views. If the target SDK of an accessibility services is
less than JellyBean, then all views are regarded for accessibility.
Note that an accessibility service that requires all view to be ragarded for
accessibility may put accessibility focus on any view. Hence, it may implement
any navigational paradigm if desired. Especially considering the fact that
the system is detecting some standard gestures and delegates their processing
to an accessibility service. The default implementation of an accessibility
services performs the defualt navigation.
bug:5932640
bug:5605641
Change-Id: Ieac461d480579d706a847b9325720cb254736ebe
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| 110414928ae13674b7ec6b816a45cf70ed521683 |
|
03-Apr-2012 |
Joe Fernandez <joefernandez@google.com> |
am c1a0e54d: am b459b619: am 945b7cb3: Merge "docs: Accessibility Dev Guide (subsumes Accessibility Best Practices)" into ics-mr1
* commit 'c1a0e54de12aee41163b84a25ea8dfc8b64304dc':
docs: Accessibility Dev Guide (subsumes Accessibility Best Practices)
|
| e1302edd40c5cc264f842e17e3796e0a11d6f045 |
|
06-Feb-2012 |
Joe Fernandez <joefernandez@google.com> |
docs: Accessibility Dev Guide (subsumes Accessibility Best Practices)
Change-Id: Id7e3f647042d2afd390abe851be1c3b561af33ca
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| c6c25f9e28a4de73261106a80ae098347524dd2a |
|
10-Mar-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
AccessibilityServiceInfo does not convert correctly feedback type to string.
1. When the feedback type is set to TYPES_ALL_MASK the method
feedbackTypeToString was not generating a string with all
feedback types. Also the generated string sometimes could
have a comma appended after the last feedback type name
- this happens if the feedback type contains unknown type
flag.
Change-Id: I848c520cf7dae16dcd882f68275869c7ab656dd7
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| 3d0edd31d8082b7b8b2cdee5efda216179f677b5 |
|
04-Jan-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
AccessibilityService description not internationalized.
1. AccessibilityServiceInfo loading the description string on
creation and using this value. Hence, changing the locale
results in reporting incorrectly localized string. Added a
new loadDescription method to return the localized version.
2. Deprecated the old method.
bug:5807616
Change-Id: Id82bda3c6a90fa6681b035d20da0b8688ed68da3
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| bb1b9ea8a488eec833b0be18c45dae8505876042 |
|
20-Oct-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
AccessibilityServiceInfo does not report properly the feedback type.
Since the feedback type is an integer the bits of which correspond to a given
feedback type, the AccessibilityNodeInfo#feedbackTypeToString should return a
string representation of all feedback types. The current implementation
incorrectly assumes that the argument had only one flag set. Note that this
is a new ICS API and we would like to have this fixed.
bug:5486933
Change-Id: I5e461c385e199cce4c3054907ff0acf5e9d92afc
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| 00aabf7d187bc05408199bd687a538b2e68bdc17 |
|
21-Jul-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Touch exploration state set to clients asynchronously and depended on talking service being enabled.
1. Upon registration of an accessibility client the latter received only
the accessiiblity state and waiting for the touch exploration state
to be sent by the system in async manner. This led the very first
check of touch exploration state is checked a wrong value to be reported.
Now a state of the accessibility layer is returned to the client
upon registration.
2. Removing the dependency on talking accessibility service to be enabled
for getting into touch exploration mode. What if the user wants to use
an accessibility service that shows a dialog with the text of the touched
view?
bug:5051546
Change-Id: Ib377babb3f560929ee73bd3d8b0d277341ba23f7
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| 35bfedeaba724aeadc6f6c890269cb6bf7ef42f5 |
|
15-Jul-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Touch exploration separate setting and API to poll the latter state.
1. Seperated touch exploration to be a seperate setting rather being
magically enabled by the system of accessiiblity is on the there
is at leas one accessibility service that speaks enabled. Now
there is a setting for requesting touch exploration but still the
system will enabled it only if that makes sense i.e. accessibility
is on and one accessibility service that speaks is enabled.
2. Added public API for checking of touch exploration is enabled.
3. Added description attribute in accessibility service declaration
which will be shown to the user before enabling the service.
4. Added API for quick cloning of AccessibilityNodeInfo.
5. Added clone functionality to SparseArray, SparseIntArray, and
SparseBooleanArray.
bug:5034010
bug:5033928
Change-Id: Ia442edbe55c20309244061cd9d24e0545c01b54f
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| 0f55cc33f658b2793a12d609a0989348077324a4 |
|
17-Jul-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
AccessibilityNodeInfo does not report checkable coreclty.
1. AccessibilitiyNodeInfo's checkable property was not set.
bug:5039205
Change-Id: I083d1c357c6d9875536e66e355c8a33bd580cee6
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| 38e8b4e5bc3c93affdffbc064fd9db5aeccc3e8e |
|
30-Jun-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Updating accessibility documentation.
Change-Id: Ice8cf9ac6918b3bfa553776c68d4619fa6559cf8
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| cc4053e031371456fe54d51bbad1db721db4ae38 |
|
23-May-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Accessibility serviceconfiguration via meta-data
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
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| 9b31779eab896bdcc0922473b183c979cc0b874f |
|
18-Feb-2010 |
Svetoslav Ganov <svetoslavganov@google.com> |
Fix for bug 2448479
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|
| 75986cf9bc57ef11ad70f36fb77fbbf5d63af6ec |
|
15-May-2009 |
svetoslavganov <svetoslavganov@google.com> |
Accessibility feature - framework changes (replacing 698, 699, 700, 701 and merging with the latest Donut)
/frameworks/base/core/java/android/accessibilityservice/AccessibilityServiceInfo.java
|