ActionLayoutRequest<T extends Object> class final

A validated snapshot of everything needed for one layout decision.

Construction validates cross-model rules before a placement delegate runs, so a delegate never returns a partial result for invalid input. Renderers create this request from measured capacity, opaque layout options, and supported interactions; no UI object is stored here.

Constructors

ActionLayoutRequest({required ActionCollection<T> actions, required ActionLayoutConstraints constraints, required RendererCapabilities capabilities, Iterable<ActionId> primaryOrderOverride = const [], Iterable<ActionId> overflowOrderOverride = const []})

Creates and validates one layout request.

factory

Properties

actions → ActionCollection<T>

The validated action tree and its placement constraints.

final

capabilities → RendererCapabilities

Interaction features available from the renderer.

final

constraints → ActionLayoutConstraints

Available primary space and the renderer's layout costs.

final

hashCode → int

The hash code for this object.

no setter, override

overflowOrderOverride → List<ActionId>

Requested overflow order for the later ordering stage.

final

primaryOrderOverride → List<ActionId>

Requested primary order for the later ordering stage.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override