ComboBox - Klyn API

ComboBox

classin packageklyn.gui.windows

public class ComboBox extends Widget:

Widget

└ ComboBox

Themed drop-down selection field. The current implementation provides the selection model and a painter-based rendering consistent with the built-in KSS themes. Native popup behaviour can be layered on top of the same API later.

combo = ComboBox()
combo.addItem("Light")
combo.addItem("Dark")
combo.select(0)

Properties

Modifier and Type	Member	Description
public property	arrowAreaWidth `arrowAreaWidth as Int`	Width reserved for the drop-down indicator.
public property	isExpanded `isExpanded as Boolean`	Visual expanded state used by future native popups.
public property	paddingX `paddingX as Int`	Horizontal text padding.
public property	placeholder `placeholder as String`	Placeholder text displayed when nothing is selected.
public property	selectedIndex `selectedIndex as Int:`	Currently selected item index, `-1` when there is no selection.
public readonly property	selectedItem `selectedItem as String:`	Selected item text, or an empty string when nothing is selected.
public readonly property	size `size as ULong:`	Number of available items.
public readonly property	text `text as String:`	Selected item text, or an empty string when nothing is selected.

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

Constructors

Modifier and Type	Member	Description
public	ComboBox `ComboBox():`	No summary.

Methods

Modifier and Type	Member	Description
public	addActionListener `addActionListener(actionListener as ActionListener) as Void:`	Registers a listener notified when the selection changes.
public	addItem `addItem(value as String) as Void:`	Appends a new selectable item.
public	clearItems `clearItems() as Void:`	Removes all items and clears the current selection.
public	clearSelection `clearSelection() as Void:`	Clears the current selection.
public	collapse `collapse() as Boolean:`	Collapses the drop-down indicator.
public	expand `expand() as Boolean:`	Marks the drop-down indicator as expanded.
public	items `items() as ArrayList<String>:`	Returns the current item storage.
public override	paint `paint(painter as Painter) as Void:`	Paints the combo box with the active KSS style.
public	removeActionListener `removeActionListener(actionListener as ActionListener) as Boolean:`	Unregisters a previously registered selection listener.
public	select `select(index as Int) as Boolean:`	Selects an item by index.
public	setItems `setItems(values as List<String>) as Void:`	Replaces the current content with the provided items.
public	toggleExpanded `toggleExpanded() as Boolean:`	Toggles the expanded indicator state.

Methods inherited from Widget: blur, containsPoint, paint, requestFocus, resolvePreferredHeight, resolvePreferredWidth, resolvedFont, setBounds