Class zwt.event.ChangeEventManager

A change event manager is used by a widget to process change events and dispatch them to the appropriate handlers.

Handlers are methods previously registered on the event manager to handle a specific type of event. A typical handler method has two input parameters: the object that triggered the event and the event. An optional object argument may also be passed to the handler if it was provided when dispatching the event to the event manager (see zwt.event.EventManager#onEvent).

Defined in: ChangeEventManager.js.

Class Summary
Constructor Attributes	Constructor Name and Description
	zwt.event.ChangeEventManager(zwt_ui_Widget_widget) Construct a change event manager and attach it to the specified widget.

Method Summary
Method Attributes	Method Name and Description
	addChangeHandler(function_handler) Add a change handler.
	removeChangeHandler(function_handler) Remove a change handler.

Methods borrowed from class zwt.event.UIEventManager:: finalizeEventHandling, registerElement
Methods borrowed from class zwt.event.EventManager:: addHandler, addHandlers, onEvent, removeHandler, removeHandlers

Class Detail

zwt.event.ChangeEventManager(zwt_ui_Widget_widget)

Construct a change event manager and attach it to the specified widget.
Author: Jeremy KUHN.

Parameters:
{zwt.ui.Widget} zwt_ui_Widget_widget: The widget to monitor

See:: zwt.event.ChangeEvent

Method Detail

addChangeHandler(function_handler)

Add a change handler.

Parameters:
{Function} function_handler: The handler to add

removeChangeHandler(function_handler)

Remove a change handler.

Parameters:
{Function} function_handler: The handler to remove

Classes

Class zwt.event.ChangeEventManager