JsUiRenderContext class final

Rendering services and protocol converters available to components.

Constructors

JsUiRenderContext({required JsUiNodeBuilder buildNode, required JsUiEventEnvelopeHandler onUiEvent, JsUiEventDispatcher? eventDispatcher, JsUiPathNodeBuilder? buildNodeAtPath, String path = '0', BuildContext? buildContext, JsUiCanvasSceneRegistry? canvasSceneRegistry, JsUiSnapshotRegistry? snapshotRegistry, JsUiPerformanceController? performanceController, JsUiFrameScheduler? frameScheduler, Uri? networkResourceBaseUri})

Creates a render context for one structural node path.

Properties

buildContext → BuildContext?

Flutter build context used to resolve theme tokens.

final

canvasSceneRegistry → JsUiCanvasSceneRegistry

Registry for retained canvas scenes.

final

frameScheduler → JsUiFrameScheduler

Scheduler shared by frame-driven components.

final

hashCode → int

The hash code for this object.

no setter, inherited

networkResourceBaseUri → Uri?

Base URL used to resolve package-relative network resources.

final

performanceController → JsUiPerformanceController

Adaptive quality and performance state.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

snapshotRegistry → JsUiSnapshotRegistry

Registry for widgets addressable by snapshot components.

final

Methods

borderRadius(Object? value) → BorderRadiusGeometry?

Resolves border radii and radius tokens.

boxDecoration(Map<String, Object?> props) → BoxDecoration?

Resolves a container decoration and its design tokens.

build(JsUiNode node) → Widget

Builds node through the owning renderer.

child(JsUiNode node) → Widget?

Builds the sole child of node, or returns null when absent.

childAt(JsUiNode node, int index) → Widget

Builds one child while preserving its structural path.

children(JsUiNode node) → List<Widget>

Builds all direct children while preserving their structural paths.

color(Object? value) → Color?

Resolves a literal or themed color property.

dispatch(Map<String, Object?> event, {Map<String, Object?>? payload, String? defaultCoalesceKey, JsUiEventKind kind = JsUiEventKind.command}) → void

将组件事件发送给页面。

edgeInsets(Object? value) → EdgeInsetsGeometry?

Resolves edge insets and spacing tokens.

elevation(Object? value, {String name = 'elevation'}) → double?

Resolves a literal value or elevation token.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

radius(Object? value, {String name = 'radius'}) → double?

Resolves a literal value or radius token.

resource(Object? value, {String name = 'resource'}) → JsUiResourceReference

Parses a resource and resolves relative network package paths.

slot(JsUiNode node, String name) → Widget?

Builds a named structural slot stored in node.props.

spacing(Object? value, {String name = 'spacing'}) → double?

Resolves a literal value or spacing token.

textStyle(Object? value) → TextStyle?

Resolves a literal or themed text style property.

toString() → String

A string representation of this object.

inherited

withPath(String path) → JsUiRenderContext

Returns a context sharing services but using a different structural path.

Operators

operator ==(Object other) → bool

The equality operator.

inherited