FSlider class

An input where the user selects a value from within a given range.

A slider is a form field and therefore can be used within a Form widget.

See:

Inheritance

Constructors

FSlider({required FSliderController controller, FSliderStyle? style, Layout layout = Layout.ltr, Widget? label, Widget? description, Widget errorBuilder(BuildContext, String) = _errorBuilder, List<FSliderMark> marks = const [], double? trackMainAxisExtent, double? trackHitRegionCrossExtent, Widget tooltipBuilder(FTooltipStyle, double) = _tooltipBuilder, String semanticValueFormatterCallback(double) = _semanticValueFormatter, String semanticFormatterCallback(FSliderSelection)?, FormFieldSetter<FSliderSelection>? onSaved, FormFieldValidator<FSliderSelection>? validator, String? forceErrorText, bool enabled = true, AutovalidateMode? autovalidateMode, Key? key})
Creates a FSlider.

Properties

autovalidateMode → AutovalidateMode?
Used to enable/disable this form field auto validation and update its error text.
final
controller → FSliderController
The controller.
final
description → Widget?
The description.
final
enabled → bool
True if the slider is enabled.
final
errorBuilder → Widget Function(BuildContext, String)
The builder for errors displayed below the description. Defaults to displaying the error message.
final
forceErrorText → String?
An optional property that forces the FormFieldState into an error state by directly setting the FormFieldState.errorText property without running the validator function.
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 → Widget?
The label.
final
layout → Layout
The layout. Defaults to Layout.ltr.
final
marks → List<FSliderMark>
The marks.
final
onSaved → FormFieldSetter<FSliderSelection>?
An optional method to call with the final value when the form is saved via FormState.save.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
semanticFormatterCallback → String Function(FSliderSelection)
A callback that formats the semantic label for the slider. Defaults to announcing the percentages the active track occupies.
final
semanticValueFormatterCallback → String Function(double)
A callback that formats the semantic label for the slider's thumb. Defaults to announcing the percentage.
final
style → FSliderStyle?
The style.
final
tooltipBuilder → Widget Function(FTooltipStyle, double)
A builder that creates the tooltip. Defaults to printing the current percentage.
final
trackHitRegionCrossExtent → double?
The extent of the track's hit region in the cross-axis direction.
final
trackMainAxisExtent → double?
The extent of the track along the main axis. Defaults to occupying the maximum amount of space possible along the main axis.
final
validator → FormFieldValidator<FSliderSelection>?
An optional method that validates an input. Returns an error string to display if the input is invalid, or null otherwise.
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.
override
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