| fc9c4cd51b3bdca27726dd6d8a00d47e388ca2aa |
02-Nov-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Polish user selector accessibility.
1. The current user was not announced as such.
2. The event for a user switch was not sent.
Change-Id: Ib3caf1f9e93ea1f0b5450246601bc37f416be6da
ccessibilityRecord.java
|
| 7befb7deb2ac15134b3bb190520cba19165d16dd |
28-Sep-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Global gesture to toggle Accessibility system-wide.
1. This change adds a global gesture for enabling accessibility.
To enable this gesture the user has to allow it from the
accessibility settings or use the setup wizard to enable
accessibility. When the global gesture is enabled the user
can long press on power to bring the global actions dialog
and then hold with two fingers for a few seconds to enable
accessibility. The appropriate feedback is also provided.
2. The global gesture is writing directly into the settings for
the current user if performed when the keyguard is not on. If
the keygaurd is on and the current user has no accessibility
enabled, the gesture will temporary enable accessibility
for the current user, i.e. no settings are changed, to allow
the blind user to log into his account. As soon as a user
switch happens the new user settings are inherited. If no
user change happens after temporary enabling accessibility
the temporary changes will be undone when the keyguard goes
away and the device will works as expected by the current user.
bug:6171929
3. The initialization code for the owner was not executed due
to a redundant check, thus putting the accessibility layer in
an inconsistent state which breaks pretty much everything.
bug:7240414
Change-Id: Ie7d7aba80f5867b7f88d5893b848b53fb02a7537
AccessibilityManager.aidl
|
| 58d37b55bd228032355360ea3303e46a804e0516 |
18-Sep-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Multi-user support for the accessibility layer.
1. This change converts the accessibility manager service to
maintain a state per user. When the user changes the services
for the user that is going away are disconnected, the local
accessibility managers in the processes for this user are
disabled, the state is swapped with the new user's one, and
the new user state is refreshed.
This change updates all calls into the system to use their
user specific versions when applicable. For example, regisetring
content observers, package monitors, calls into other system
services, etc.
There are some components that are shared across users such
as UI created by the system process and the SystemUI package.
Such components are managed as a global state shared across
all users and are updated accordingly on a user switch. Since
the SystemUI is running in a normal app process this change
adds hidden APIs on the local window manager to allow the
SystemUI to notify the accessibility layer that it will run
accross users.
Calls to AccessibiltyManager's isEnabled(), isTouchExplorationEnabled()
and sendAccessibilityEvent return false or a are a nop for a
background user sice he should not send accessibility events,
and should not perform touch exploration.
Update the internal accessibility tests due to changes in the
AccessibilityManager.
This change also fixes several issues that were encountered
such as calling out the accessibility manager service with a
lock held.
Removed some incorrect debugging code from the TouchExplorer
that was leading to a system crash.
bug:6967373
Change-Id: I2cf32ffdee1d827a8197ae4ce717dc0ff798b259
ccessibilityManager.java
AccessibilityManager.aidl
|
| 77276b60851a158ad3e142cb3b091d57ae5ceffb |
14-Sep-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Adding accessibility events for touch and gesture detection states.
1. Currently the system fires accessibility events to announce the
start and end of a touch exploration gesture. However, such a
gesture starts after we have decided that the user is not
performing a gesture which is achieved by measuring speed of
movement during a threshold distance. This allows an accessibility
service to provide some feedback to the user so he knows that
he is touch exploring.
This change adds event types for the first and last touches
of the user. Note that the first touch does not conincide with
the start of a touch exploration gesture since we need a time
or distance to pass before we know whether the user explores
or gestures. However, it is very useful for an accessibility
service to know when the user starts to interact with the
touch screen so it can turn the speech off, to name one
compelling use case.
This change also provides event types for the start and end
of gesture detection. If the user has moved over the threshold
with a speed greater than X, then the system detects gestures.
It is useful for an accessibility service to know the begin
and end of gesture detection so it can provide given feedback
type for such a gesture, say it may produce haptic feedback
or sound that differs for the one for touch exploration.
The main benefit of announcing these new events is that an
accessibility service can provide feedback for each touch
state allowing the user to always know what he is doing.
bug:7166935
Change-Id: I26270d774cc059cb921d6a4254bc0aab0530c1dd
ccessibilityEvent.java
|
| 33aef98fd28dcac0a2ad37e7329afd3e666f5e0a |
13-Sep-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Allowing association between a view and its label for accessibility.
1. For accessibility purposes it is important to be able to associate
a view with content with a view that labels it. For example, if
an accessibility service knows that a TextView is associated with
an EditText, it can provide much richer feedback.
This change adds APIs for setting a view to be the label for another
one and setting the label for a view, i.e. the reverse association.
bug:5016937
Change-Id: I7b837265c5ed9302e3ce352396dc6e88413038b5
ccessibilityNodeInfo.java
|
| c9c9a48e7bafae63cb35a9aa69255e80aba83988 |
16-Jul-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Removing a workaround for incorrect window position on window move.
1. The window manager was not notifying a window when the latter
has been moved. This was causing incorrect coordinates of the
nodes reported to accessibility services. To workaround that
we have carried the correct window location when making a
call from the accessibility layer into a window. Now the
window manager notifies the window when it is moved and the
workaround is no longer needed. This change takes it out.
2. The left and right in the attach info were not updated properly
after a report that the window has moved.
3. The accessibility manager service was calling directly methods
on the window manager service without going through the interface
of the latter. This leads to unnecessary coupling and in the
long rung increases system complexity and reduces maintability.
bug:6623031
Change-Id: Iacb734b1bf337a47fad02c827ece45bb2f53a79d
ccessibilityNodeInfo.java
AccessibilityInteractionConnection.aidl
|
| 27e2da7c171afa39358bbead18fbe3e6b8ea6637 |
03-Jul-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Remove the accessibility focus search code.
1. In JellyBean we have added some APIs to search for next accessibility
focus in various directions and set accessibility focus from hover.
However, we have decided that there is not clean answer for how this
should behave and the APIs were hidden. Now the accessibility service
is responsible for that. The unused code is now taken out.
2. This patch also takes out the hidden attribute accessibiligyFocusable
since we moved the responsibility for implementing focus search strategy
to accessibility services and we did not need that for Jellybean which
is a good sign that this is not needed. I general this is one less thing
for an app developer to worry about. We can add this if needed later.
bug:6773816
Change-Id: I0c858d72c93a2b7ff1f8f35a08d33ec4b9eb85fd
ccessibilityNodeInfo.java
ccessibilityNodeProvider.java
|
| 45a02e0809c14a52aa24658666df0d41ce661857 |
18-Jun-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
API for finding accessibility focus in virtual tree not needed.
1. The function for finding where the accessibility focus in a virtual
node tree presented by an AccessibilityNodeProvider is not needed
API since the framework already keeps track of the accessibility
focused virtual node in order to draw the focus rectangle. This API
adds unnecessary complexity to developers of AccessibilityNodeProviders.
bug:6675330
Change-Id: I84774686b06a995073a39e45b8ef22f2cd04b773
ccessibilityNodeProvider.java
|
| 8ffe8b304e4778b3c95e57ad5a77cd41c9cf9f7b |
15-Jun-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Accessibility focus search and setting it from hover are performed by the client.
1. Currently we are providing accessibility focus search algorithm in the
framework and we are also setting accessibility focus from hover. It
appears that implementing a focus search strategy that works for all
accessibility services is non trivial task if feasible. Based on
feedback from the developers of two such services at Google - TalkBack
and BarilleBack - the built in focus search does not quite match what
they need and they would like to implement a custom strategy.
Hence, having APIs for accessibility focus search in the framework does
not make. Therefore, we are hiding this APIs and later will take out the focus
search logic and allow the accessibility service to implement search.
Also putting accessibility focus from hover is tightly integrated with
the focus search since the set of views that get accessibility focus
from hover should be the same as the set of views returned by the
focus search routine. Therefore, we are letting the accessibility service
decide where to put accessibility focus when it gets an accessibility
hover event.
bug:6675330
Change-Id: Ie152230990a6602f3fd1d82de2177d0b1444d654
ccessibilityNodeInfo.java
ccessibilityNodeProvider.java
|
| ee33ad24cdc31ed0d7f99e110e041b0a63c9b0f1 |
09-Jun-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Settings crash after enabling TalkBack accessibility.
1. AccessibilityInput filter was not checking whether the touch
explorer instance is not null before passing it an accessibility
event. If the accessibility event is dispatched before the input
filter is installed but after it is created we runt into this
case.
2. Added a missing null check in accessibility node info.
bug:6635089
Change-Id: Ia389dc1f427427eb73794f6331ccb870e0b44c55
ccessibilityNodeInfo.java
|
| 86783474fdec98a22bc22e224462767eab13e273 |
07-Jun-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Cannot interact with dialogs when IME is up and on not touch explored popups.
1. If the last touch explored location is within the active window we
used to click on exact location if it is within the accessibility
focus otherwise in the accessibility focus center. If the last touch
explored location is not within the active window we used to just
click there. This breaks in the case were one has touch explored
at a given place in the current window and now a dialog opens *not*
covering the touch explored location. If one uses swipes to move
accessibility focus i.e. to traverse the dialog without touching
it one cannot activate anything because the touch explorer is using
the last touch explored location that is outside of the active
window e.g the dialog.
The solution is to clear the last touch explored location when a
window opens or accessibility focus moves. If the last touch
explored location is null we are clicking in the accessibility
focus location.
bug:6620911
2. There is a bug in the window manager that does not notify a
window that its location has changed (bug:6623031). This breaks
accessibility interaction with dialogs that have input because
when the IME is up the dialog is moved but not notified. Now
the accessibility layer gets incorrect location for the
accessibility focus and the window bounds.
The soluion is when the accessibility manager service calls
into the remove thress to obtain some accessibility node infos
it passes the window left and top which it gets from the
window manager. These values are used to update the attach info
window left and top so all accessibility node infos emitted
from that window had correct bounds in screen coordinates.
bug:6620796
Change-Id: I18914f2095c55cfc826acf5277bd94b776bda0c8
ccessibilityNodeInfo.java
AccessibilityInteractionConnection.aidl
|
| 2ef6905003c20010032ee993dfcc5899ad9be6f8 |
04-Jun-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Client app crashes if accessibility service uses invalid focus type.
1. If an accessibility service uses an invalid focus type argument
when trying to find where focus is the queried application crashes.
The same happens if the serivce calls focus search with an invalid
derection. While we need the argument check in the controller that
runs in the app process the accessibility service has to be the
palace where an exception is thown for the invalid argument so
the developer can fix his code.:
bug:6508797
Change-Id: Ib0d74f374fa60ee8fd6117f11c23af34f6c26ad3
ccessibilityNodeInfo.java
|
| 4528b4e882584745f48263fa6626987e63832a2a |
16-May-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Prefetching of accessibility node infos getting incorrect views.
1. The prefetcher of accessibility nodes infos was not folloing
the childForAccessibility relationship when finding the views
whose node infos to prefetch.
2. NumberPicker was not reporting the correct parent.
bug:6471710
Change-Id: Ia7ad5dd031fb4b3816dfe630d5212201cfafa236
ccessibilityInteractionClient.java
ccessibilityNodeInfoCache.java
|
| c406be9036643ebe41bafcd94fe4aa861b4e4f4f |
12-May-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Fix inconsitency in aAccessibilityNodeInfo cache.
1. Fixed errors in the accessibility node cache.
A. The cache was not catching the case when the current window changes as a
result the user touch exploring it. As a result the cache had nodes from
more that one window but the node ids are not unique thus causing a mess.
B. The node info tree was prefetched regardless if a prefetched node is root
name space (i.e. view ids - not accessibility ids - are namespaced) while
the prefetched nodes were taking this into account. As a result there can
get disconnected subtrees in the cache.
C. When an event for a property change such as focus was received the cache
we were removing the source node. As a result there may be disconnected nodes.
D. When a node was added to the cache and an older version exists there was
no check if it will point to the same children and parent. As a result if
the state of the node has fewer children the subtrees rooted at the no
longer present children will stay disconnected in the cache.
E. When a node got accessibility or input focus the old one in the cache was
not removed. As a result you may have a state with more than one access
or input focus.
2. Added integrity check enabled only on user builds when a specific flag is set
for the cache which checks whether:
A. All nodes are from the same window.
B. All nodes are connected.
C. There are no duplicates.
D. There is only one input focus.
E. There is only one accessibility focus.
3. The reported accessibility node info tree was stopping at the root namespace
boundary which is not correct. The reported tree has to reflect everything
on the screen that the user can see such a workspace with widgets. The root
namespace is added to avoid clash of view id but the accessibility ids are
unique no matter if the view is inflated from a remote view.
4. Added calls to notify the accessibility layer when a preoprty that is interesting
for accessibiliy has changed.
bug:6471710
Change-Id: I069470d91f209ba16313fa6539787a55efa3512e
ccessibilityInteractionClient.java
ccessibilityNodeInfoCache.java
|
| a1dc761c8322355eb1bb71d3d6c9c603c1d1fc0f |
10-May-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Adding scroll actions to accessibility node info.
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
ccessibilityNodeInfo.java
|
| 57aab755441a28c2e5c78c35a57b940afc2799e0 |
10-May-2012 |
alanv <alanv@google.com> |
Fixed typo in findAccessibilityFocus API.
Change-Id: I3ca1448792a1b712f781c1bfa73823ca08ea3d39
ccessibilityNodeProvider.java
|
| 6704c233390743890d23338a2329dcda5709b810 |
08-May-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Merge "AccessibilityNodeInfo for visible views should reported." into jb-dev
|
| 0a1bb6dffc358c01e10555c5c833edb7dba69659 |
07-May-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
AccessibilityNodeInfo for visible views should reported.
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
ccessibilityNodeInfo.java
|
| 6d17a936f73976971135aa1e6248662533343292 |
28-Apr-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Text traversal at various granularities.
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
ccessibilityEvent.java
ccessibilityNodeInfo.java
|
| 2b435aada3d274a9c08d334946fff1ab9ba15b48 |
05-May-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
API REVIEW: android.view.accessibility
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
ccessibilityEvent.java
ccessibilityNodeInfo.java
|
| 52a623700f9bcba7ef8bfe3ba7ff6160a1bd65e8 |
02-May-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Virtual nodes are always important for accessibility.
1. Virtual nodes should be made important since the implementer of
the tree represented by the nodes decides which node to report.
In the case with native widgets we decide in the framework but
in the case of the node provider, the implementer of the latter
makes the call. Hence, if a node in not important the provider
should not report it in the first place. The issue this patch
solves is to allow events from virtual nodes to be propagated
to the accessibility services.
bug:6432588
Change-Id: Ie01f84e9e0ef2280da934b98283962a5db38abc2
ccessibilityRecord.java
|
| e9bda15f87c11a8827ca0ffc865611176805cc0a |
01-May-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
AccessibilityNodeInfo.getActionSymbolicName() is missing A11y focus actions.
1. The new actions were not added to this helper method so it was
throwing an InvalidArgumentException.
bug:6421059
Change-Id: I132348a50bb900ee19b95cc92c26ce47609ccb1c
ccessibilityNodeInfo.java
|
| b7ff3255c6d4e12f9d2334e3bbec0a125b7b09dc |
25-Apr-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Adding explicit text traversal granularities and actions for web navigation.
1. The granularities for traversing the text content of an accessibility
node info are now predefined constants and custom ones will not be
supported. This is the simplest solution - we can always add namespaced
user defined ones (unlikely).
2. Added actions for traversing web content. These actions can be used by
an accessibility service to transparently drive the JavaScript based
screen reader that is used for handling web content.
3. Added a new accessibility event type for traversing the content of a
view. This event is needed to announce to the user what is the next
element, i.e. the one next to the cursor, after the view's text was
traversed.
bug:5932640
bug:6389591
Change-Id: I144647da55bc4005c64f89865ef333af8359e145
ccessibilityEvent.java
ccessibilityNodeInfo.java
|
| 76f287e416ded85734b610f316e38d243d2ddb09 |
23-Apr-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Removing hierarchical accessibility focus directions.
1. The accessibility focus directions are not needed since an
accessibility service just get the root, first child, next
sibling, previous sibling and call execute the action to
give it accessibility focus. Now the accessibility node
info tree is properly ordered taking into account layout
manager directions for both layout manager that we report
and ones that we have determined as not important for
accessibility. Also the position of a node info are ordered
properly based on their coordinates after all transformations
as opposed to child index.
bug:5932640
Change-Id: I994a8297cb1e57c829ecbac73a937c2bcbe0bac7
ccessibilityNodeInfo.java
ccessibilityNodeProvider.java
|
| 122b2c32dea573a3efbd0d608a70b7cd169d99dd |
21-Apr-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Fixing a couple of issues I have introduces in the last patch.
1. Fix waiting for the wrong instance.
2. Fix cloning of accessibility node info.
Change-Id: Icabf0d4bc947602a32fddc6642cc787f2bc766e4
ccessibilityNodeInfo.java
|
| aa780c110922148a6a4ba06734bb2b0bb8c98f93 |
20-Apr-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Adding support for traversing the content of a node info at granularity.
1. A view that creates an accessibility node info may add to the info
a list of granularity labels. These are granularities by which the
source view can iterate over its content. For example a text view
may support character, word link while a web view may additionally
support buttons, tables, etc. There are actions on accessibility
node info to go to the next/previous at a given granularity which
is passesed as an argument.
2. Added Bundle argument to the APIs for performing accessibility
actions. This is generic and extensible.
bug:5932640
Change-Id: I328cbbb4cddfdee082ab2a8b7ff1bd7477d8d6f9
ccessibilityInteractionClient.java
ccessibilityNodeInfo.java
ccessibilityNodeProvider.java
AccessibilityInteractionConnection.aidl
|
| 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
ccessibilityInteractionClient.java
|
| 005b83b0c62d3d0538f0d566b08bd457015ec661 |
17-Apr-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
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
ccessibilityNodeInfo.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
ccessibilityEvent.java
ccessibilityInteractionClient.java
ccessibilityManager.java
ccessibilityNodeInfo.java
ccessibilityNodeInfoCache.java
ccessibilityNodeProvider.java
ccessibilityRecord.java
AccessibilityInteractionConnection.aidl
AccessibilityManager.aidl
|
| 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
ccessibilityEvent.java
ccessibilityEventSource.java
ccessibilityNodeInfo.java
ccessibilityRecord.java
ackage.html
|
| 559c4841a631321efc2284de9187dbaccce50550 |
10-Mar-2012 |
Ken Wakasa <kwakasa@google.com> |
Merge "Fix obvious typos under frameworks/base/core"
|
| 51ab90cab1609cf0ddd2dfe5a660f020d823d4d5 |
09-Mar-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Adding an announcement type accessibility event and a method on View to announce.
1. The need for sending an accessibility event to announce a context change
which does not cleanly fit into the existing UI transition UI events has
come quite a few time in application development. To avoid retrofitting
accessibility event types that do not semantically match the intent to
just announce a short message this patch is adding specialized event type.
Also a helper method on View is added to sheild developers from knowing
how to construct and send such an event.
bug:5977979
Change-Id: Iaf5f620426f8616be67fbf243a02ad5b606c949b
ccessibilityEvent.java
|
| f76a50ce8fdc6aea22cabc77b2977a1a15a79630 |
09-Mar-2012 |
Ken Wakasa <kwakasa@google.com> |
Fix obvious typos under frameworks/base/core
Change-Id: Ia5fc3db1bb51824e7523885553be926bcc42d736
ccessibilityNodeInfo.java
ccessibilityRecord.java
|
| afd5fab3ab001e90269dfef37d87e69e0e261826 |
24-Feb-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
AccessibilityNodeInfos node properly cached.
1. AccessibilityNodeInfo were not cloned when cached
and obtained from the cache. This was causing a
problem when the client calls #recycle() as he
should since this results in wiping the data of
the cached node info.
bug:6026952
Change-Id: I5807b09d95ef6f310327192ff91f036adf337e33
ccessibilityNodeInfoCache.java
|
| 57c7fd5a43237afc5e8ef31a076e862c0c16c328 |
24-Feb-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Fixing issues with the AccessibilityNodeInfo cache.
1. Before there were two caches one in the app process that
kept track only the ids of infos that were given to a
querying client and one in the querying client that
holds the infos. This design requires precise sync
between the caches. Doing that is somehow complicated
since the app has cache for each window and it has
to intercept all accessibility events from that window
to manage the cache. Each app has to have a cache for
each querying client. This approach would guarantee that
no infos are fetched twice but due to its stateful nature
and the two caches is tricky to implement and adds
unnecessary complexity. Now there is only one cache in
the client and the apps are stateless. The client is
passing flags to the app that are a clue what nodes to
prefetch. This approach may occasionally fetch a node
twice but it is considerably simpler and stateless
from the app perspective - there is only one cache.
Fetching a node more than once does not cause much
overhead compared to the IPC.
Change-Id: Ia02f6fe4f82cff9a9c2e21f4a36747de0f414c6f
ccessibilityInteractionClient.java
ccessibilityNodeInfo.java
ccessibilityNodeInfoCache.java
ccessibilityRecord.java
AccessibilityInteractionConnection.aidl
|
| 0d04e245534cf777dfaf16dce3c51553837c14ff |
21-Feb-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Improving accessibility APIs used for UI automation.
1. UiTestAutomationBridge was accessing the root node in the
active window by tracking the accessibility event stream
and keeping the last active window changing event. Now
the bridge is stateless and the root node is fetched by
passing special window and view id with the request to
the system.
2. AccessibilityNodeInfos that are cached were not finished,
i.e. not sealed, causing exception when trying to access
their children or rpedecessors.
3. AccessibilityManagerService was not properly restoring its
state after the UI automation bridge disconnects from it.
I particular the devices was still in explore by touch mode
event if no services are enabled and the sutomation bridge
is disconnected.
4. ViewRootImpl for the focused window now fires accessibility
events when accessibility is enabled to allow accessibility
services to determine the current user location.
5. Several missing null checks in ViewRootImpl are fixed since
there were scenraios in which a NPE can occur.
6. Update the internal window content querying tests.
7. ViewRootImpl was firing one extra focus event.
bug:6009813
bug:6026952
Change-Id: Ib2e058d64538ecc268f9ef7a8f36ead047868a05
ccessibilityInteractionClient.java
ccessibilityNodeInfo.java
|
| 79311c4af8b54d3cd47ab37a120c648bfc990511 |
18-Jan-2012 |
Svetoslav Ganov <svetoslavganov@google.com> |
Speedup the accessibility window querying APIs and clean up.
1. Now when an interrogating client requires an AccessibilibtyNodeInfo
we aggressively prefetch all the predecessors of that node and its
descendants. The number of fetched nodes in one call is limited to
keep the APIs responsive. The prefetched nodes infos are cached in
the client process. The node info cache is invalidated partially or
completely based on the fired accessibility events. For example,
TYPE_WINDOW_STATE_CHANGED event clears the cache while
TYPE_VIEW_FOCUSED removed the focused node from the cache, etc.
Note that the cache is only for the currently active window.
The ViewRootImple also keeps track of only the ids of the node
infos it has sent to each querying process to avoid duplicating
work. Usually only one process will query the screen content
but we support the general case. Also all the caches are
automatically invalidated so not additional bookkeeping is
required. This simple strategy leads to 10X improving the
speed of the querying APIs.
2. The Monkey and UI test automation framework were registering a
raw event listener for accessibility events and hence perform
connection and cache management in similar way to an AccessibilityService.
This is fragile and requires the implementer to know internal framework
stuff. Now the functionality required by the Monkey and the UI automation
is encapsulated in a new UiTestAutomationBridge class. To enable this
was requited some refactoring of AccessibilityService.
3. Removed the *doSomethiong*InActiveWindow methods from the
AccessibilityInteractionClient and the AccessibilityInteractionConnection.
The function of these methods is implemented by the not *InActiveWindow
version while passing appropriate constants.
4. Updated the internal window Querying tests to use the new
UiTestAutomationBridge.
5. If the ViewRootImple was not initialized the querying APIs of
the IAccessibilityInteractionConnection implementation were
returning immediately without calling the callback with null.
This was causing the client side to wait until it times out. Now
the client is notified as soon as the call fails.
6. Added a check to guarantee that Views with AccessibilityNodeProvider
do not have children.
bug:5879530
Change-Id: I3ee43718748fec6e570992c7073c8f6f1fc269b3
ccessibilityInteractionClient.java
ccessibilityNodeInfo.java
ccessibilityRecord.java
AccessibilityInteractionConnection.aidl
AccessibilityManager.aidl
|
| 55cdacb9ba22ce0e40918fd54acca7df62637ca6 |
01-Dec-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
am 0bfdd7c2: am e9f24a43: Merge "Fix memory leaks in the accessibility layer." into ics-mr1
* commit '0bfdd7c2927fb683b89fdd52befe643e8e069e77':
Fix memory leaks in the accessibility layer.
|
| 36bcdb535e14a8a2e2c8643fb577569f7a2b6aed |
01-Dec-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Fix memory leaks in the accessibility layer.
The AccessibilityServiceConnection chache should be shared
between all interrogating threads.
bug:5664337
Change-Id: I151041d0b358e87ac47ea5c1c258f90a8b252420
ccessibilityInteractionClient.java
|
| 786e54dd13111b6a2f75f4f37dd20353cf613e97 |
01-Dec-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Fixing the build
Change-Id: I125956773dd364b14f8d328e625df3c852001dbf
ccessibilityInteractionClient.java
|
| 66922db828eab153c15bf3ca0b007313d9376e5e |
01-Dec-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Fixing the build - for real
Change-Id: I9628f2da8876b85f9c8ce94cc876b10e083980f6
ccessibilityInteractionClient.java
|
| 8b5a814f6a36045b06bee36f44703503c03714d4 |
01-Dec-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Fixing the build
Change-Id: I7b2270843123b252098ca798c03284fb089f1b8a
ccessibilityInteractionClient.java
|
| f3b4f3163b5b4c0a54a2643f07c97c47b14a1eb7 |
01-Dec-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
resolved conflicts for merge of 26f7a81f to master
Change-Id: I6bf5fd7c0de7945cef84602dbe3a7bbed587700f
|
| d116d7c78a9c53f30a73bf273bd7618312cf3847 |
22-Nov-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Fixing memory leaks in the accessiiblity layer.
1. AccessibilityInteractionConnections were removed from the
AccessiiblityManagerService but their DeathRecipents were
not unregistered, thus every removed interaction connection
was essentially leaking. Such connection is registered in
the system for every ViewRootImpl when accessiiblity is
enabled and inregistered when disabled.
2. Every AccessibilityEvent and AccessiilbityEventInfo obtained
from a widnow content querying accessibility service had a
handle to a binder proxy over which to make queries. Hoewever,
holding a proxy to a remote binder prevents the latter from
being garbage collected. Therefore, now the events and infos
have a connection id insteand and the hindden singleton
AccessiiblityInteaction client via which queries are made
has a registry with the connections. This class looks up
the connection given its id before making an IPC. Now the
connection is stored in one place and when an accessibility
service is disconnected the system sets the connection to
null so the binder object in the system process can be GCed.
Note that before this change a bad implemented accessibility
service could cache events or infos causing a leak in the
system process. This should never happen.
3. SparseArray was not clearing the reference to the last moved
element while garbage collecting thus causing a leak.
bug:5664337
Change-Id: Id397f614b026d43bd7b57bb7f8186bca5cdfcff9
ccessibilityEvent.java
ccessibilityInteractionClient.java
ccessibilityNodeInfo.java
ccessibilityRecord.java
AccessibilityManager.aidl
|
| e9dc7c9f031b494c6ebe156de957f0a8f2cd58b0 |
19-Nov-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
am bdc2912d: am d8a3cabc: Merge "Text selection AccessibilityEvents are missing text." into ics-mr1
* commit 'bdc2912da64e5e6402c73997d637224d905ae825':
Text selection AccessibilityEvents are missing text.
|
| 84dd52e394d27b5cdf638132808e2585a9049480 |
18-Nov-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Text selection AccessibilityEvents are missing text.
The text selection change event was not added to the text
populating accessibility events in View.
bug:5638709
Change-Id: Ie7e319bc07d7e6c48f178a6c1bd22b1fe32ff515
ccessibilityEvent.java
|
| ec6c89b616f5ae50f26185e14ef0f104f7e3f956 |
27-Oct-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Merge "Minor documentation fixes for the APIs to expose virtual view tree."
|
| af0d984a5850666a374d6f7fc690664d33d57568 |
27-Oct-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
resolved conflicts for merge of b0267e28 to master
Change-Id: Ic65ab83958b2e6bb941fe015b557fd2fd8f80683
|
| c0291bb2eb96e96e0fe06047be929f89aa985ae6 |
26-Oct-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
AccessibilityNodeInfo makes incorrect check before calling into the system.
AccessibilityNodeInfo#getParent is checking whether the source view
accessibility id is specified instead that of the parent.
bug:5505799
Change-Id: I436fd2327def2762b4d307819ba0c23baa9a4e03
ccessibilityNodeInfo.java
|
| 71b4e71c67df79f53b582fabb34b96ddbe23fe0f |
25-Oct-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Minor documentation fixes for the APIs to expose virtual view tree.
Change-Id: I94b74196483fb55ca67e0a50eebab0412c88831c
ccessibilityNodeInfo.java
|
| 021078554b902179442a345a9d080a165c3b5139 |
04-Oct-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Adding APIs to enable reporting virtual view hierarchies to accessibility serivces.
Added an interface that is the contract for a client to expose a virtual
view hierarchy to accessibility services. Clients impement this interface
and set it in the View that is the root of the virtual sub-tree. Adding
this finctionality via compostion as opposed to inheritance enables apps
to maintain backwards compatibility by setting the accessibility virtual
hierarchy provider on the View only if the API version is high enough.
bug:5382859
Change-Id: I7e3927b71a5517943c6cb071be2e87fba23132bf
ccessibilityEvent.java
ccessibilityInteractionClient.java
ccessibilityNodeInfo.java
ccessibilityNodeProvider.java
ccessibilityRecord.java
AccessibilityInteractionConnection.aidl
|
| 82ced8250f78aff7b96f7c6ae75bcfaf1023d336 |
17-Oct-2011 |
Scott Main <smain@google.com> |
am f755a2e8: Merge "docs: a couple notes for a11y methods in View and cleanup to the A11y service HTML to be semantically correct and thus improve its accessibility :)" into ics-mr0
* commit 'f755a2e8aabfd6b26df4f3f56f0e9cdfb06cc173':
docs: a couple notes for a11y methods in View and cleanup to the A11y service HTML to be semantically correct and thus improve its accessibility :)
|
| b303d8381d734f48c4e1de4f11bf25950b28adf1 |
13-Oct-2011 |
Scott Main <smain@google.com> |
docs: a couple notes for a11y methods in View and cleanup to the
A11y service HTML to be semantically correct and thus improve its accessibility :)
Change-Id: I483a8a441d802b056f68f82e0e782d86a73298ac
ccessibilityManager.java
|
| 8b6c7dd2fe1016a8f765f98e8114d5f491f02353 |
11-Oct-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Add AccessibilityRecord#getMaxScrollX and #getMaxScrollY to the pubic API
The methods were hidden for the previoud release since they were added
too close to the SDK final date.
bug:5424373
Change-Id: I812b9809223db75636b04549500f023820b6eb5a
ccessibilityRecord.java
|
| 9920f4fdeaa3a4c597f62c3d082becc48ea8a7ab |
08-Oct-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Accessibility text changed event text not populated.
Added the TYPE_VIEW_TEXT_CHANGED event to the populating events.
bug:5430831
Change-Id: I78e87640ea4279227d89f399ad43e9b88eb4a486
ccessibilityEvent.java
|
| d9ee72fddb8be40e414a831fb80458dc48699613 |
06-Oct-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Fixing errors in position information of scrollable views reported for accessibility.
1. ScrollView/HorizontalScroll view were reporting only the scroll X and Y but
failed to convey the max scroll along X and Y so the position can be determined.
2. WebView was not reporting correctly its scroll position for accessibility.
3. Some descendants of AdapterView were reporting incorrect position information.
4. Updated the accessibility docs with some details about the scroll information.
5. Cleaned up duplicated code.
bug:5412132
bug:5412265
Change-Id: I165e73ecde027dad811425b9f395a3f758c923ba
ccessibilityEvent.java
ccessibilityRecord.java
|
| 82e236d72ac197d6673d0b4d484fe5f0b9436731 |
30-Sep-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
The logic for not populating text to some accessibility events is scattered.
1. Some accessibility evenents should not and were not dispatched for
text population but there was no centralized location for enforcing
this - rather the system was firing them in a specific way or there
were conditions in a few places enforcing that. Now this is centralized
and clean.
2. Updated the documentation with some new event types the were lacking.
3. Explicitly stated in the documentaition which events are dispatched to
the sub-tree of the source for text populatation.
bug:5394527
Change-Id: I86e383807d777019ac98b970c7d9d02a2f7afac6
ccessibilityEvent.java
|
| ea515aeafa01de6f50c854ee381b972ef2478284 |
15-Sep-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Update the public APIs for finding views by text to optionally use content description.
1. Added flags to the search method to specify whether to match text or
content description or both.
2. Added test case for the seach by content description.
3. Updated the code in AccessibilityManager service to reflect the latest
changes there so test automation service works - this is the fake
service used for UI automation.
Change-Id: I14a6779a920ff0430e78947ea5aaf876c2e66076
ccessibilityNodeInfo.java
|
| 6bc5e530016928027c7b390a8368ecdd5bff072f |
10-Sep-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Inter process interrogation ocassionally gets stuck.
1. There was a bug that was not handling correctly the
case for which the interrogator requests an accessibility
node info and the message describing how to fetch the
latter for the same process case was delivered after the
code that checks whether the message is there in order to
dispatch it is executed. Now the message handling is done
correctly - the caller checks if the message is present and
if so processes it, otherwise the caller sleeps and is
interrupted if such a message arrives.
bug:5138933
Change-Id: I4c2940b46c9a52a51c5ee48b83ca6811489765d6
ccessibilityInteractionClient.java
|
| 8bd69610aafc6995126965d1d23b771fe02a9084 |
23-Aug-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Intra-process view hierarchy interrogation does not work.
The content retrieval APIs are synchronous from a client's
perspective but internally they are asynchronous. The client thread
calls into the system requesting an action and providing a callback
to receive the result after which it waits up to a timeout for that
result. The system enforces security and then delegates the request
to a given view hierarchy where a message is posted (from a binder
thread) describing what to be performed by the main UI thread the
result of which it delivered via the mentioned callback. However,
the blocked client thread and the main UI thread of the target view
hierarchy can be the same one, for example an accessibility service
and an activity run in the same process, thus they are executed on the
same main thread. In such a case the retrieval will fail since the UI
thread that has to process the message describing the work to be done
is blocked waiting for a result is has to compute! To avoid this scenario
when making a call the client also passes its process and thread ids so
the accessed view hierarchy can detect if the client making the request
is running in its main UI thread. In such a case the view hierarchy,
specifically the binder thread performing the IPC to it, does not post a
message to be run on the UI thread but passes it to the singleton
interaction client through which all interactions occur and the latter is
responsible to execute the message before starting to wait for the
asynchronous result delivered via the callback. In this case the expected
result is already received so no waiting is performed.
bug:5138933
Change-Id: I382e2d8689f5189110226613c2387f553df98bd3
ccessibilityInteractionClient.java
ccessibilityNodeInfo.java
ccessibilityRecord.java
AccessibilityInteractionCallback.aidl
AccessibilityInteractionConnection.aidl
AccessibilityInteractionConnectionCallback.aidl
|
| e4aa13b20166219a62916a92294055e7cc5c9f10 |
01-Aug-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
AccessibilityEvent#toString() always reports -1 for record count.
1. The implementation of toString() was calling a wrong method
for the record count.
bug:5087078
Change-Id: I4ca79faa6ccce135eb6fe797de7b08e30f8b3e71
ccessibilityEvent.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
ccessibilityManager.java
ccessibilityNodeInfo.java
AccessibilityManager.aidl
AccessibilityManagerClient.aidl
|
| 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
ccessibilityEvent.java
ccessibilityManager.java
ccessibilityNodeInfo.java
AccessibilityManagerClient.aidl
|
| 47b779b9f9c2e7948ae8d45ea07a10f1ad07d135 |
17-Jul-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Scroll events should indicate whether or not they have pixel data.
1. Updated all integet properties of AccessibilityRecord to be set to -1
so this is a clue to the client that this property is irrelevant for
the current event type.
bug:5031598
Change-Id: Ifedc15bf2249847cbc6cbcb83f5732e17b8b2903
ccessibilityRecord.java
|
| 4dfecf55c1afcc7ffe0cef931df67c4934a13e34 |
01-Jul-2011 |
Jim Miller <jaggies@google.com> |
Fix runtime reboot loop.
Change-Id: Ib0614e64e81e376fdbbe7c42a5e4aa8fb9c88ce9
ccessibilityManager.java
|
| 38e8b4e5bc3c93affdffbc064fd9db5aeccc3e8e |
30-Jun-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Updating accessibility documentation.
Change-Id: Ice8cf9ac6918b3bfa553776c68d4619fa6559cf8
ccessibilityEvent.java
ccessibilityEventSource.java
ccessibilityManager.java
ccessibilityNodeInfo.java
ccessibilityRecord.java
ackage.html
|
| a20cdc06e599c6fef784a0a479e8329f95e4bd09 |
27-Jun-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Fixing the build
Change-Id: Ic3664e5cd812d5fe59c9cf2657a441ca76a61135
ccessibilityEvent.java
ccessibilityRecord.java
|
| a0156177cdc809795dd8bc5a19943dd2b6f82b66 |
27-Jun-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Added scroll and text selection change accessibility events.
1. Added scrolling accessibility event to provicde feedback
when a view is scrolled.
Note: We need scroll events for ICS since even though we have
touch exploration the user does not know when something
is scrollable and not feedback is provided while scrolling.
bug:4902097
2. Added a text selection change event to provide feedback
for selection changes including cursor movement.
Note: We need the text selection change events for ICS since
even though the IME supports navigation in text fields
the user receives no feedback for the current selection/
cursor position.
bug:4586186
3. Added a scrollable property to both AccessibilityEvent and
AccessibilityNodeInfo. The info has to describe the source
in terms of all properties that make sense for accessibility
purposes and the event has this property (kinda duplicated)
since clients will aways want to know if the source is
scrollable to provided clue to the user and we want to avoid
pulling the info of the source for every accessibility event.
Change-Id: I232d6825da78e6a12d52125f51320217e6fadb11
ccessibilityEvent.java
ccessibilityNodeInfo.java
ccessibilityRecord.java
|
| 86398bda3dd869c67faa841a5d961316b5f4aa8a |
22-Jun-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
AccessiblityNodeInfo#findAccessibilityNodesByText returns null if non found.
1. Updated the code to return empty list instead.
2. Updated the doc to explain that the search is done in the
sub-tree rooted at the info whose method is called.
Change-Id: I560d2563ed4772305bf2d7919560ef19baa30a1d
ccessibilityNodeInfo.java
|
| 34e350daf89aed09ac748c2185f4506772a63b3f |
21-Jun-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
ListView do not fire accessibility hover events.
1. AccessibilityEvent was incorrectly setting the
connection of an owned AccessibilityRecord after
the record is initialized since during initialization
the record may become sealed.
bug:4724101
Change-Id: I39087dc8023c62252f31431ece23de901dc45972
ccessibilityEvent.java
|
| eeee4d2c01d3c4ed99e4891dbc75c7de69a803fa |
11-Jun-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Final polish of the interrogation feature.
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
ccessibilityEvent.java
ccessibilityNodeInfo.java
ccessibilityRecord.java
AccessibilityInteractionConnection.aidl
|
| 8dffad68c7aa7da9a3d73d1ee41f3c4460f733b4 |
10-Jun-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Bug fixes in the accessibility interrogation APIs
1. AccessibilityNodeInfo was not overriding equals.
2. ViewAncestor was not calling the callback for
setting the result of an interrogation request
thus making the system process wait upto the
maximal timeout.
Change-Id: I040a3c12d97f48aee319ba6414879546e71e9b8e
ccessibilityNodeInfo.java
|
| 9210ccbdc3629cead65a822d729e1783a773118c |
09-Jun-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
AccessibilityNodeInfo and AccessibilityEvent to initialized properly.
Change-Id: Id3a1b33a222790214820af4a8b49378f08e53558
ccessibilityEvent.java
ccessibilityNodeInfo.java
|
| 8643aa0179e598e78d938c59035389054535a229 |
20-Apr-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Interrogation of the view hierarchy from an AccessibilityService.
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
ccessibilityEvent.java
ccessibilityManager.java
ccessibilityNodeInfo.aidl
ccessibilityNodeInfo.java
ccessibilityRecord.java
AccessibilityInteractionConnection.aidl
AccessibilityInteractionConnectionCallback.aidl
AccessibilityManager.aidl
|
| 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
ccessibilityEvent.java
ccessibilityManager.java
AccessibilityManager.aidl
|
| d36a699410d8b65deede229df8414dde04c3421c |
19-May-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Fixing my build fix
Change-Id: I8393e0172367de730123b2fa9d743b1ecb2eb087
ccessibilityRecord.java
|
| 887e1a17eb9b12448f5929791b564565b2665aab |
30-Apr-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Touch exploration - nits
Change-Id: Ie49558e0a81218dbad70c02f81dd7a59b3213d5c
ccessibilityEvent.java
ccessibilityRecord.java
|
| 736c2756bf3c14ae9fef7255c119057f7a2be1ed |
23-Apr-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Touch exploration feature, event bubling, refactor
1. Added an Input Filter that interprets the touch screen motion
events to perfrom accessibility exploration. One finger explores.
Tapping within a given time and distance slop on the last exlopred
location does click and long press, respectively. Two fingers close
and in the same diretion drag. Multiple finglers or two fingers in
different directions or two fingers too far away are delegated to
the view hierarchy. Non moving fingers "accidentally grabbed the
device for the scrren" are ignored.
2. Added accessibility events for hover enter, hover exit, touch
exoloration gesture start, and end. Accessibility hover events
are fired by the hover pipeline. An accessibility event is
dispatched up the view tree and the topmost view fires it.
Thus predecessors can augment the fired event. An accessibility
event has several records and a predecessor can optionally
modify, delete, and add such to the event.
3. Added onPopulateAccessibilityEvent and refactored the existing
accessibility code to use it.
4. Added API for querying the currently enabled accessibility services
by feedback type.
Change-Id: Iea2258c07ffae9491071825d966dc453b07e5134
ccessibilityEvent.java
ccessibilityManager.java
ccessibilityRecord.java
AccessibilityManager.aidl
|
| 3fb3d7c4e756bd32d5abde0abca9ab52d559bc84 |
23-Apr-2011 |
Adam Powell <adamp@google.com> |
Revert "Touch exploration feature, event bubling, refactor"
This reverts commit ac84d3ba81f08036308b17e1ab919e43987a3df5.
There seems to be a problem with this API change. Reverting for now to
fix the build.
Change-Id: Ifa7426b080651b59afbcec2d3ede09a3ec49644c
ccessibilityEvent.java
ccessibilityManager.java
ccessibilityRecord.java
AccessibilityManager.aidl
|
| ac84d3ba81f08036308b17e1ab919e43987a3df5 |
05-Apr-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Touch exploration feature, event bubling, refactor
1. Added an Input Filter that interprets the touch screen motion
events to perfrom accessibility exploration. One finger explores.
Tapping within a given time and distance slop on the last exlopred
location does click and long press, respectively. Two fingers close
and in the same diretion drag. Multiple finglers or two fingers in
different directions or two fingers too far away are delegated to
the view hierarchy. Non moving fingers "accidentally grabbed the
device for the scrren" are ignored.
2. Added accessibility events for hover enter, hover exit, touch
exoloration gesture start, and end. Accessibility hover events
are fired by the hover pipeline. An accessibility event is
dispatched up the view tree and the topmost view fires it.
Thus predecessors can augment the fired event. An accessibility
event has several records and a predecessor can optionally
modify, delete, and add such to the event.
3. Added onPopulateAccessibilityEvent and refactored the existing
accessibility code to use it.
4. Added API for querying the currently enabled accessibility services
by feedback type.
Change-Id: Iec03c6c3fe298de3f14cb6efdbb9b198cd531a0c
ccessibilityEvent.java
ccessibilityManager.java
ccessibilityRecord.java
AccessibilityManager.aidl
|
| 43a17654cf4bfe7f1ec22bd8b7b32daccdf27c09 |
07-Apr-2011 |
Joe Onorato <joeo@google.com> |
Remove the deprecated things from Config.java. These haven't been working since before 1.0.
Change-Id: Ic2e8fa68797ea9d486f4117f3d82c98233cdab1e
ccessibilityManager.java
|
| c0a8cd10a5829bf4e94ee073ba6f553128e9d8e9 |
19-Mar-2011 |
Svetoslav Ganov <svetoslavganov@google.com> |
Text in accessibility events not consistent
bug:2513822
Text added to accessibility events is truncated to max
length. However, the fromIndex and toIndex properties
are relative to the text before being truncated, thus
potentially our of bound. Removed the max length
limitation because test very rarely is longer that
500 characters and in the cases in which text is longer
than 500 character it will not be a real problem to
pass a bit more data through an IPC (very rarely).
Change-Id: Ie70ac630dfeb56d4f59079abb2f46d07582796b6
ccessibilityEvent.java
|
| af7adab3e35863fff24e701039d5d04afbc060c5 |
17-Apr-2010 |
Svetoslav Ganov <svetoslavganov@google.com> |
2604184 Expose hidden APIs for testing the AccessibilityManager separately from the backing AccessibilityManagerServcie
Change-Id: Ief5df31baa3c0990467625977e97cd066a671959
ccessibilityManager.java
|
| 7946d07183c2020b7421113e3a113763eac15a67 |
14-Apr-2010 |
Dianne Hackborn <hackbod@google.com> |
Merge "2593810 Accessibility event's parcelableData property not nullified during recycling"
|
| 9efd078c6bf513e8c6bf59ce57e6f9c038fdf3ee |
14-Apr-2010 |
Svetoslav Ganov <svetoslavganov@google.com> |
2593810 Accessibility event's parcelableData property not nullified during recycling
Change-Id: I88d6f3d63d7ff0fbdd88fb9cb642349029838b31
ccessibilityEvent.java
|
| dd64a9b0d6ff0f15b22d02a108c5342c74db995a |
14-Apr-2010 |
Svetoslav Ganov <svetoslavganov@google.com> |
2593833 AccessibilityManager not properly initialized immediately upon registration in the AccessibilityManagerService
Change-Id: I0226bafc5e9c5b800c54019c9309394f1e5f9e88
ccessibilityManager.java
AccessibilityManager.aidl
|
| 75986cf9bc57ef11ad70f36fb77fbbf5d63af6ec |
15-May-2009 |
svetoslavganov <svetoslavganov@google.com> |
Accessibility feature - framework changes (replacing 698, 699, 700, 701 and merging with the latest Donut)
ccessibilityEvent.aidl
ccessibilityEvent.java
ccessibilityEventSource.java
ccessibilityManager.java
AccessibilityManager.aidl
AccessibilityManagerClient.aidl
|