EDOBE XDOM TAKE 6 IR - PRODUCTSHEET Especificaciones descargar pdf (Pagina 83)

CHAPTER 4: User-Interface Tools Defining behavior with event callbacks and listeners 83

myButton.addEventListener( ’click’, myFunction );

A locally defined handler function that takes one argument, the event object. For example:

myButton.addEventListener( ’click’, ’function(e){/*handler code*/}’);

The handler or registered code statement is executed when the specified event occurs in the target. A

script can programmatically simulate an event by creating an event objects with

ScriptUI.events.events.createEvent(), and passing it to an event target’s dispatchEvent() function.

You can remove a handler that has been previously registered by calling the event target’s

removeEventListener()

function. The parameters you pass to this function must be identical to those

passed to the addEventListener()

call that registered the handler. Typically, a script would register all event

handlers during initialization, and unregister them during termination; however, unregistering handlers

on termination is not required.

You can register for an event in a parent or ancestor object of the actual target; see the following section.

The predefined types of

UIEvent correspond to the event callbacks, as follows:

In addition, ScriptUI implements all types of W3C events according to the W3C DOM level 3 functional

specification (http://www.w3.org/TR/DOM-Level-3-Events/events.html

), with these modifications and

exceptions:

X ScriptUI does not implement the hasFeature() method of the DOMImplementation interface; there

is no way to query whether a given W3C DOM feature is implemented in ScriptUI.

X In ScriptUI, the W3C EventTarget interface is implemented by UI element objects (such as Button,

Window, and so on).

X In ScriptUI, the W3C AbstractView object is a UI element (such as Button, Window, and so on).

X None of the "namespace" properties or methods are supported (such as initEventNS and

initMouseEventNS).

Callback UIEvent type

onChange change

onChanging changing

onClick click (detail = 1)

onDoubleClick click (detail = 2)

onEnterKey enterKey

onMove move

onMoving moving

onResize resize

onResizing resizing

onShow show

onActivate focus

onDeactivate blur

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EDOBE XDOM TAKE 6 IR - PRODUCTSHEET Especificaciones Pagina 83