Fields

Each Field is a Composite that pairs a Label with a specific input widget in a horizontal row:

Class	Input widget	Value type	Notes
TextField	Entry	string	Simple text input
SearchField	Entry::search()	string	Search-style field; may debounce on macOS
PasswordField	Entry::password()	string	Text masked on screen, readable via value()
NumberField	Spinbox	int	Requires min/max range
SliderField	Slider	int	Has live value readout label
FilePickerField	Entry (readonly) + Button	string	Requires parent Window; opens native file dialog
CheckboxField	Checkbox	bool	Checkbox with label
RadioGroup	RadioButtons	int	Selected index (0-based); addOptions()
ComboBoxField	Combobox	int	Selected index (0-based); addOptions()
EditableComboBoxField	EditableCombobox	string	User-typable combo; addOptions()
DatePickerField	DateTimePicker	\DateTimeImmutable	dateOnly()/timeOnly() factories
TextAreaField	MultilineEntry	string	Vertical label + stretchy text area
ProgressBarField	ProgressBar	(none)	setProgress(), indeterminate()
SeparatorLine	Separator	(none)	Thin horizontal divider

$field = new TextField('Name:', 'default');
$field->on('change', fn (string $val) => print($val));
$form->append($field->root(), 'Name:');

// Get/set value
$val = $field->value();
$field->setValue('New value');