DatePicker

classin packageklyn.gui.windows

public class DatePicker extends Widget:

Widget

└ DatePicker

Themed date selection field with a calendar popup.

The widget behaves like a combo box whose popup lets the user choose a date. value is a signal property, so it can be bound or watched directly. Enable quickEditMode when the expected workflow is year, then month, then day.

import klyn.gui.windows
import klyn.time

picker = DatePicker(DateTime(year=2026, month=6, day=14))
picker.quickEditMode = true
Binding.watch(picker::value, lambda(value: Object): print(value))

Properties

Modifier and Type	Member	Description
public property	buttonAreaWidth `buttonAreaWidth as Int = 42`	Width reserved for the calendar button at the right side of the field.
public property	isExpanded `isExpanded as Boolean = false`	Whether the popup is currently visible.
public property	paddingX `paddingX as Int = 12`	Horizontal text padding inside the collapsed field.
public property	quickEditMode `quickEditMode as Boolean = false`	Enables the three-click picker: year, month, then day.

Inherited Properties

propertyInherited Properties from Widget: accentColor, backgroundColor, borderColor, bottom, canFocus, cornerRadius, font, foregroundColor, hasFocus, height, isEnabled, isHovered, isManaged, isTabStop, isVisible, layoutParams, margin, maxHeight, maxWidth, minHeight, minWidth, parent, preferredHeight, preferredWidth, right, sizePolicy, styleClass, width, window, x, y

Signals

Modifier and Type	Member	Description
public signal property	value `value as DateTime:`	Selected date.

Events

Modifier and Type	Member	Description
public event	dateChanged `dateChanged as ActionEvent`	Event emitted after the selected date changes.

Inherited Events

eventInherited Events from Widget: keyPressed, keyReleased, mouseMoved, mousePressed, mouseReleased, mouseWheel, paintRequested, resized

Constructors

Modifier and Type	Member	Description
public	DatePicker `DatePicker(value as DateTime = null):`	Creates a date picker.

Methods

Modifier and Type	Member	Description
public	collapse `collapse() as Boolean:`	Closes the calendar popup.
public	expand `expand() as Boolean:`	Opens the calendar popup.
public override	paint `paint(painter as Painter) as Void:`	Paints the collapsed field.
public override	paintOverlay `paintOverlay(painter as Painter) as Void:`	Paints the calendar popup above the regular widget tree.
public	popupContainsPoint `popupContainsPoint(x as Int, y as Int) as Boolean:`	Returns true when a point falls inside the open popup.
public override	resolvePreferredHeight `resolvePreferredHeight() as Int:`	Resolved preferred height after runtime content zoom.
public override	resolvePreferredWidth `resolvePreferredWidth() as Int:`	Resolved preferred width after runtime content zoom.
public	toggleExpanded `toggleExpanded() as Boolean:`	Toggles the calendar popup.

Inherited Methods

methodInherited Methods from Widget: blur, containsPoint, emitKeyPressed, emitKeyReleased, emitMouseMoved, emitMousePressed, emitMouseReleased, emitMouseWheel, handleTabKey, notifyPaintRequested, paint, paintOverlay, repaint, requestFocus, resolvePreferredHeight, resolvePreferredWidth, resolvedFont, setBounds