WidgetDeclaration class

A description of a widget in a remote widget library.

The root must be either a ConstructorCall or a Switch that evaluates to a ConstructorCall. (In principle one can imagine that an ArgsReference that evaluates to a ConstructorCall would also be valid, but such a construct would be redundant and would not provide any additional expressivity, so it is disallowed.)

The tree rooted at root must not contain (directly or indirectly) a ConstructorCall that references the widget declared by this WidgetDeclaration: widget loops, even indirect loops or loops that would in principle be terminated by use of a Switch, are not allowed.

Inheritance

• Object
• BlobNode
• WidgetDeclaration

Constructors

WidgetDeclaration(String name, DynamicMap? initialState, BlobNode root)

Binds the given name to the definition given by root.

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

initialState → DynamicMap?

If non-null, this is a stateful widget; the value is used to create the initial copy of the state when the widget is created.

final

name → String

The name of the widget that this declaration represents.

final

root → BlobNode

The widget to return when this widget is used.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

source → SourceRange?

The source location that corresponds to this BlobNode, if known.

no setter, inherited

Methods

associateSource(SourceRange source) → void

Assign a SourceRange to this BlobNode's source property.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

propagateSource(BlobNode? original) → void

Assign another BlobNode's SourceRange to this BlobNode's source property.

inherited

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited