ArnaCheckbox class
An Arna-styled checkbox.
The checkbox itself does not maintain any state. Instead, when the state of the checkbox changes, the widget calls the onChanged callback. Most widgets that use a checkbox will listen for the onChanged callback and rebuild the checkbox with a new value to update the visual appearance of the checkbox.
The checkbox can optionally display three values - true, false, and null - if tristate is true. When value is null a dash is displayed. By default tristate is false and the checkbox's value must be true or false.
See also:
- ArnaCheckboxListTile, which combines this widget with an ArnaListTile so that you can give the checkbox a label.
- ArnaSwitch, a widget with semantics similar to ArnaCheckbox.
- ArnaRadio, for selecting among a set of explicit values.
- ArnaSlider, for selecting a value in a range.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- ArnaCheckbox
Constructors
-
ArnaCheckbox({Key? key, required bool? value, required ValueChanged<
bool?> ? onChanged, bool tristate = false, bool isFocusable = true, bool autofocus = false, Color? accentColor, MouseCursor cursor = MouseCursor.defer, String? semanticLabel}) -
Creates An Arna-styled checkbox.
const
Properties
- accentColor → Color?
-
The color of the checkbox's focused border and selected state.
final
- autofocus → bool
-
Whether this checkbox should focus itself if nothing else is already focused.
final
- cursor → MouseCursor
-
The cursor for a mouse pointer when it enters or is hovering over the checkbox.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- isFocusable → bool
-
Whether this checkbox is focusable or not.
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
-
onChanged
→ ValueChanged<
bool?> ? -
Called when the value of the checkbox should change.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- semanticLabel → String?
-
The semantic label of the checkbox.
final
- tristate → bool
-
If true the checkbox's value can be true, false, or null.
final
- value → bool?
-
Whether this checkbox is checked.
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
DiagnosticsNodeobjects 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