ValueListenableProvider<T> class

Listens to a ValueListenable and expose its current value.

Inheritance
Implemented types

Constructors

ValueListenableProvider({Key key, @Deprecated('Will be removed as part of 4.0.0, use update instead') ValueBuilder<ValueNotifier<T>> builder, @required ValueBuilder<ValueNotifier<T>> create, UpdateShouldNotify<T> updateShouldNotify, Widget child })
Creates a ValueNotifier using create and automatically dispose it when ValueListenableProvider is removed from the tree. [...]
ValueListenableProvider.value({Key key, @required ValueListenable<T> value, UpdateShouldNotify<T> updateShouldNotify, Widget child })
Listens to value and exposes its current value. [...]

Properties

child Widget
The widget that is below the current ValueListenableProvider widget in the tree. [...]
final
updateShouldNotify UpdateShouldNotify<T>
updateShouldNotify can optionally be passed to avoid unnecessarily rebuilding dependents when nothing changed. Defaults to (previous, next) => previous != next. See InheritedWidget.updateShouldNotify for more information.
final
delegate ValueStateDelegate<ValueListenable<T>>
The current state of DelegateWidget. [...]
@protected, read-only, inherited
hashCode → int
The hash code for this object.
read-only, inherited
key Key
Controls how one widget replaces another widget in the tree. [...]
final, inherited
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited

Methods

build(BuildContext context) Widget
Describes the part of the user interface represented by this widget. [...]
override
cloneWithChild(Widget child) ValueListenableProvider<T>
Clones the current provider with a new child. [...]
override
createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree. [...]
inherited
createState() → _DelegateWidgetState
Creates the mutable state for this widget at a given location in the tree. [...]
inherited
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children. [...]
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node. [...]
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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
toString({DiagnosticLevel minLevel: DiagnosticLevel.debug }) → String
Returns a string representation of this object.
inherited
toStringDeep({String prefixLineOne: '', String prefixOtherLines, DiagnosticLevel minLevel: DiagnosticLevel.debug }) → 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 ==(dynamic other) → bool
The equality operator.
inherited