SemanticsSlider class

A widget that annotates the widget tree with a description of the meaning of the widgets and makes sure it is recognized as a slider.

Inheritance

Constructors

SemanticsSlider({Key? key, required Widget child, required double value, String? label, String? tooltip, double adjustmentUnit = 0.1, ValueChanged<double>? onChanged, Map<String, String>? properties, bool testOnly = false})
const

Properties

adjustmentUnit → double
The amount by which the slider value should be adjusted when the user increases or decreases the slider value.
final
child → Widget
The slider widget.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
label → String?
An optional semantic label for the slider.
final
onChanged → ValueChanged<double>?
An optional callback that is called when the slider value changes. If this is not provided, the slider will be considered disabled.
final
properties → Map<String, String>?
Additional custom properties to pass to the underlying Semantics widget.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
testOnly → bool
Whether this semantics information is only used for testing.
final
tooltip → String?
An optional semantic tooltip for the slider.
final
value → double
The current value of the slider.
final

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
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