GenUiSemanticNode class
One node of what a surface exposes to assistive technology, in the shape A2UI's rendering cases are written in.
A rendered surface cannot be compared between Flutter, SwiftUI, Compose and
the web as pixels. It can be compared as semantics: every one of those
toolkits builds a tree of roles, names, values, states and actions, and
that is also the part of a rendered surface the protocol has opinions
about — a Button the agent labelled Send has to arrive as something
that says "Send" and can be pressed, whatever draws it.
Constructors
-
GenUiSemanticNode({required String role, String name = '', String value = '', String tooltip = '', Map<
String, bool> state = const <String, bool>{}, List<String> actions = const <String>[]}) -
Creates a GenUiSemanticNode.
const
-
GenUiSemanticNode.fromJson(Map<
String, Object?> json) -
Reads back a node written by toJson.
factory
Properties
-
actions
→ List<
String> -
What a user can do to it:
tap,increase,decrease, and the rest of the platform's action names.final - hashCode → int
-
The hash code for this object.
no setteroverride
- name → String
-
What assistive technology announces this node as.
final
- role → String
-
What kind of thing this is:
text,button,checkbox,switch,slider,text_field,image,linkorgroup.final - runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
state
→ Map<
String, bool> -
checked,selectedanddisabled, when the node has them.final - tooltip → String
-
What the platform shows on hover or long press, and what some platforms
fall back to when a control has no name of its own.
final
- value → String
-
What it currently holds, for the components that hold something.
final
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toJson(
) → Map< String, Object?> - This node as JSON, omitting what it does not carry so that a golden file stays readable.
-
toString(
) → String -
A string representation of this object.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
override