Watch<T extends Widget> class

A deprecated widget for watching signal changes in the widget tree.

Migration to SignalBuilder

// Deprecated legacy pattern:
Watch((context) => Text('$counter'))

// Modern, streamlined pattern:
SignalBuilder(builder: (context) => Text('${counter.value}'))
Inheritance
Available extensions
Annotations
  • @Deprecated('Use SignalBuilder instead for superior reactivity and consistent naming.')

Constructors

Watch(T builder(BuildContext context), {Key? key, String? debugLabel, List<ReadonlySignal> dependencies = const []})
Minimal builder for signal changes that rerender a widget tree.
const
Watch.builder({Key? key, required T builder(BuildContext context), String? debugLabel, List<ReadonlySignal> dependencies = const []})
Drop in replacement for the Flutter builder widget.
const

Properties

builder → T Function(BuildContext context)
The widget to rebuild when any signals change
final
debugLabel → String?
Optional debug label to use for devtools
final
dependencies → List<ReadonlySignal>
List of optional dependencies to watch
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
createElement() → StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
inherited
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toSignalWidget() → SignalWidget

Available on StatelessWidget, provided by the StatelessWidgetConvertWidgetExtension extension

Converts this StatelessWidget to a SignalWidget.
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited