CheckboxLeading class
The checkbox in front of a checklist line (list: checked/unchecked).
Colors come from a CheckboxStyle (typically the theme's checkbox).
When onChanged is null the checkbox is display-only: it still shows the
checked state but ignores taps, which is the viewer's default.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- CheckboxLeading
Constructors
-
CheckboxLeading({required bool checked, CheckboxStyle style = const CheckboxStyle(), double size = 16, double width = 32, double endPadding = 8, ValueChanged<
bool> ? onChanged, Key? key}) -
Creates a checkbox marker.
const
Properties
- checked → bool
-
Whether the box is checked.
final
- endPadding → double
-
Gap between the marker and the line content.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
-
onChanged
→ ValueChanged<
bool> ? -
Called with the new state when the box is tapped; null renders an
inert checkbox.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- size → double
-
Side length of the box, typically the line's font size.
final
- style → CheckboxStyle
-
The colors of the box.
final
- width → double
-
Total width reserved for the marker.
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, int wrapWidth = 65}) → 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