TxCheckbox constructor

const TxCheckbox({ required bool? value, required ValueChanged<bool?>? onChanged, Key? key, bool tristate = false, MouseCursor? mouseCursor, Color? activeColor, MaterialStateProperty<Color?>? fillColor, Color? checkColor, Color? focusColor, Color? hoverColor, MaterialStateProperty<Color?>? overlayColor, double? splashRadius, MaterialTapTargetSize? materialTapTargetSize, VisualDensity? visualDensity, FocusNode? focusNode, bool autofocus = false, OutlinedBorder? shape, BorderSide? side, bool isError = false, String? semanticLabel, })

Creates a Material Design 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 following arguments are required:

• value, which determines whether the checkbox is checked. The value can only be null if tristate is true.
• onChanged, which is called when the value of the checkbox should change. It can be set to null to disable the checkbox.

Implementation

const TxCheckbox({
  required this.value,
  required this.onChanged,
  super.key,
  this.tristate = false,
  this.mouseCursor,
  this.activeColor,
  this.fillColor,
  this.checkColor,
  this.focusColor,
  this.hoverColor,
  this.overlayColor,
  this.splashRadius,
  this.materialTapTargetSize,
  this.visualDensity,
  this.focusNode,
  this.autofocus = false,
  this.shape,
  this.side,
  this.isError = false,
  this.semanticLabel,
})  : _checkboxType = _TxCheckboxType.material,
      assert(tristate || value != null);