Binding - Klyn API

Binding

classin packageklyn.binding

public class Binding:

Binding

Common one-way, two-way and watch data-binding engine.

The API is shared by window and terminal widgets. It binds observable state declared with signal property; the compiler emits the change notification automatically when the property setter completes. UI events use event declarations and payload classes from klyn.events or klyn.gui.event. User code observes or binds state; it never fires a signal property manually.

Binding.twoWay(slider::value, spin::value)
Binding.watch(slider::value, lambda(value: Object): print(value))

Methods

Modifier and Type	Member	Description
public static	oneWay `oneWay(left as BindingRef, right as BindingRef) as Void:`	Synchronizes `right` from `left` and keeps it updated.
public static	twoWay `twoWay(left as BindingRef, right as BindingRef) as Void:`	Synchronizes both members and keeps them mutually updated.
public static	unwatch `unwatch(source as BindingRef, handler as Object) as Void:`	Unregisters a previously registered callback.
public static	watch `watch(source as BindingRef, handler as Object) as Void:`	Registers a callback invoked when the referenced signal property changes.