SingleChildSubValue<T> class abstract

A SubValue that implements SingleChildWidget and is therefore compatible with Nested.

Its build method must not be overriden. Instead use buildWithValue.

Inheritance
Implementers

Constructors

SingleChildSubValue({required SubValueBuilderCreate<T> create, SubValueBuilderUpdate<T>? update, SubValueBuilderKeys? keys, SubValueBuilderDispose<T>? dispose, Widget? child})
Creates a widget that has exactly one child widget.
const

Properties

create → SubValueBuilderCreate<T>
Creates the value. Called at least once and everytime keys changes.
final
dispose → SubValueBuilderDispose<T>?
Disposes the value. Called before recreation and when disposing. Useful for Listeners, etc.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
keys → SubValueBuilderKeys?
Used to decide when to recreate the value. If null, the value is never recreated.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
update → SubValueBuilderUpdate<T>?
Updates the value. Called every build. If null, does nothing. In the call order, this comes after recreating the value.
final

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
inherited
buildWithChild(BuildContext context, Widget? child) → Widget
A build method that receives an extra child parameter.
override
buildWithValue(BuildContext context, T value, Widget? child) → Widget
A build method that receives both a value and a child parameter.
createElement() → SingleChildStatelessElement
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
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
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 ==(Object other) → bool
The equality operator.
inherited