Chris Bracken abe9826a9d Add accessibility semantics support to embedder (#7891) ...

Flutter's accessibility APIs consist of three main calls from the
embedder to the Dart application:

  1. FlutterEngineUpdateSemanticsEnabled: enables/disables semantics support.

  2. FlutterEngineUpdateAccessibilityFeatures: sets embedder-specific
     accessibility features.

  3. FlutterEngineDispatchSemanticsAction: dispatches an action (tap,
     long-press, scroll, etc.) to a semantics node.

and two main callbacks triggered by Dart code:

  1. FlutterUpdateSemanticsNodeCallback: notifies the embedder of
     updates to the properties of a given semantics node.

  2. FlutterUpdateSemanticsCustomActionCallback: notifies the embedder
     of updates to custom semantics actions registered in Dart code.

In the Flutter framework, when accessibility is first enabled, the
embedder will receive a stream of update callbacks notifying the
embedder of the full semantics tree. On further changes in the Dart
application, only updates will be sent.

2019-02-20 18:59:29 -08:00

..

android

Respect the custom GL proc table when creating the resource context on the IO thread. (#7893)

2019-02-20 17:23:14 -08:00

darwin

Respect the custom GL proc table when creating the resource context on the IO thread. (#7893)

2019-02-20 17:23:14 -08:00

embedder

Add accessibility semantics support to embedder (#7891)

2019-02-20 18:59:29 -08:00

linux

Unify copyright lines (#6757)

2018-11-07 12:24:35 -08:00

BUILD.gn

Remove the shell build target's dependency on the embedder library (#7549)

2019-01-22 14:38:19 -08:00