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
Fade the alpha quicker, to reduce the amount of dimming to
black we see in the middle. Also start scaled a little
farther back; since in this case the lock screen is fully
opaque, we won't see the early part of the window animation
behind.
Change-Id: I65fcfbf2f27860abf6a1b225a44428d8a20cfb34
Non-system apps now require user confirmation before sending an SMS
to a short code that may potentially cost the user money. The number
is tested against regex patterns for short codes for the country
matching the user's SIM card or network. The user is warned if the
phone number is potentially or definitely a premium SMS number.
The regex patterns are loaded from core/res/res/xml/sms_short_codes.xml.
If the user's country is not found, then phone numbers of 5 digits or less
(excluding known emergency phone numbers) are considered to be potential
SMS short codes.
Command to run test cases:
$ runtest -c com.android.internal.telephony.SmsUsageMonitorShortCodeTest frameworks-telephony
Bug: 5513975
Change-Id: Ic0b483153390e974c632302f3061300bc2a2274a
We now have an animation to apply to the thing behind the lock
screen animation when it isn't on the wallpaper, which looks
similar to the animation we use when both are on the wallpaper.
In implementing this, cleaned up the code to figure out up-front
which animation to run, getting rid of that kludgy thing that
cleared the window animation if the wallpaper was not being used
for the lower windows.
Change-Id: Ifc4c8a8894ad384124dcf4bbdaab134f1157b0f3
1. Accessibility services are the ones that choose how to
announces the checked state of a checkable control, so
CheckBox should not add strings for its state to access
events.
2. Removed some unused accessibility related strings.
bug:6241115
Change-Id: I572b961191da4b3537fb6cad529d9764d39161ec
Because a lid switch can be used to do many things, it's best
if the framework does not do anything by default when the lid is
opened or closed. The behavior of the lid switch should be
configured on a per-product basis in a config.xml resource overlay.
Bug: 6320088
Change-Id: I9f768dd11d76c3c17c49f46c92f993ee2ff1409f
Instead of each application loading the KeyCharacterMap from
the file system, get them from the input manager service as
part of the InputDevice object.
Refactored InputManager to be a proper singleton instead of
having a bunch of static methods.
InputManager now maintains a cache of all InputDevice objects
that it has loaded. Currently we never invalidate the cache
which can cause InputDevice to return stale motion ranges if
the device is reconfigured. This will be fixed in a future change.
Added a fake InputDevice with ID -1 to represent the virtual keyboard.
Change-Id: If7a695839ad0972317a5aab89e9d1e42ace28eb7
Use "2.android.pool.ntp.org" since it returns both IPv4 and IPv6
addresses. Verified that NTP client works correctly on both.
Change-Id: I0187ef4a6d3b353cfcc77957b1303ca01c67cbe9
Restrict action buttons with text to 2 lines max. Action buttons with
text will always consume at least 2 cells in split mode because they
look silly in 1.
Note that this affects text provided by menu items, not TextViews
embedded within app-provided action views.
Fixes bug 6236467
Change-Id: I7bcbf80f448b13a895ddc3bc6a7a555c0f0bac7c
Rather than normal Activities (which have a host of problems
when used for this purpose), screen savers are now a
special kind of Service that can add views to its own
special window (TYPE_DREAM, in the SCREENSAVER layer).
Dreams are now launched by the power manager; whenever it is
about to turn the screen off, it asks the window manager if
it wants to run a screen saver instead. (http://b/5677408)
Also, the new config_enableDreams bool allows the entire
feature to be switched on or off in one place. It is
currently switched off (and the APIs are all @hidden).
Change-Id: Idfe9d430568471d15f4b463cb70586a899a331f7
Also lock down the rest of the development tools permissions to
be development permissions that must be granted through an
explicit shell command.
Change-Id: I1ba216fffe1aab4bb9f83fcef108efc504f892f4
Simplified input injection API down to just one call.
Removed all input state reading API. It was only used by the
window manager policy and required a permission that applications
could not obtain. READ_INPUT_STATE is now unused and deprecated.
Change-Id: I41278141586ddee9468cae0fb59ff0dced6cbc00
Added a new InputManager service for interacting with input
devices and configuring them. This will be the focus of
an upcoming refactoring.
Added an API for registering keyboard layouts with the system
based on the use of a broadcast receiver. Applications can
register their own keyboard layouts simply by declaring a
broadcast receiver in their manifests.
Added the skeleton of a package that will ultimately contain
the keyboard layouts and other input device related resources
that are part of the base system.
Bug: 6110399
Change-Id: Ie01b0ef4adbd5198f6f012e73964bdef3c51805c
The extents of FUL when using PIN unlock are such that there are
4 dps of space between FUL and the adjacent text above and below.
The extents of FUL when using pattern backup were such that FUL
was very far below the adjacent text above. Pattern backup is
now consistent with PIN backup - 4 dps of space between FUL and
the adjacent text above and below.
Note that it is not possible for FUL to be the same exact size
when using pattern backup vs. PIN backup because the rest of
the layout is different. Making it a consistent distance from
the surrounding text is the best we can do.
To fix this, the FUL area simply had to cover an extra row in the
grid layout (a space view), and the top and bottom margins had to
be set to 4 dp. Since only the FUL view is affected, it does not
impact the rest of the layout.
This has been tested on both a Prime and Crespo to make sure it
works across different size devices. All lock methods have been
tested to make sure other methods were not affected.
Change-Id: I518f1b616cf7bedc510979d422ebc72e07a5aff4
Promote navigation helpers from the support library to the core
platform.
The support library's meta-data element has been replaced with a
first-class parentActivityName attribute. This attribute is valid
on both activity and activity-alias elements. An activity-alias
will inherit the target activity's parentActivityName if one is
not explicitly specified.
Automatic Up navigation for Activities
Add the public method onNavigateUp() to Activity. The default
implementation will use the metadata supplied in the manifest about an
activity's hierarchical parent (parentActivityName) to do the right
thing.
If any activities in the parent chain require special Intent
arguments, the Activity subclass should override onNavigateUp() to
properly implement Up navigation for the app, supplying such arguments
as needed.
If automatic Up navigation within the same task can't find an activity
matching the supplied intent in the current task stack, it will act as
an in-app "home" and return to the root activity (presumably the app's
front page) in that task. (From this state, pressing "back" with
default behavior will return to the launcher.)
Change-Id: If163e27e59587f7af36975a09c986cb117ec3bc6
The status bar and navigation bar are two completely separate
elements, with their own semantics. The system bar now classifies
itself as a navigation bar, since that is really how it behaves.
This required rewriting the HDMI resizing code, so that it is
all done by PhoneWindowManager since that is what is responsible
for the size of the navigation bar (and thus now system bar). This
actually gets rid of a fair amount of code, and means we can also
do the same thing for a pure navigation bar.
Likewise the system bar now has the navigation bar ability to be
hidden when requested by system UI flags. To get the behavior
we want on Xoom, we only allow the nav bar to be hidden when it
will help provide a better aspect ratio for showing widescreen
videos.
Finally the nav/system bar now animates when hidden and shown.
Change-Id: Ie927154b68376a0b61802f99171ff56b8da92e7a
- fix bug #6163772
- use bits field and pack them as much as possible
- take care of "supportsRtl" flag from Manifest
- add visual unit tests
CTS unit tests in another CL
Change-Id: Ib77c4eb423854209af130688c5ef9977401a9c1c
