User Guide

Tree.nodeOpen 1299
Tree.nodeOpen
Availability
Flash Player 6 (6.0.79.0).
Edition
Flash MX Professional 2004.
Usage
var listenerObject:Object = new Object();
listenerObject.nodeOpen = function(eventObject:Object) {
// Insert your code here.
};
treeInstance.addEventListener("nodeOpen", listenerObject);
Description
Event; broadcast to all registered listeners when a user opens a node on a Tree component.
Version 2 components use a dispatcher/listener event model. The Tree component dispatches
a
nodeOpen event when a node is clicked open by a user; the event is handled by a function,
also called a handler, that is attached to a listener object (
listenerObject) that you create.
You call the
addEventListener() method and pass it the name of the handler as a parameter.
When the event is triggered, it automatically passes an event object (
eventObject) to the
handler. Each event object has properties that contain information about the event. You can
use these properties to write code that handles the event. The
Tree.nodeOpen event’s event
object has one additional property:
node (the XML node that was opened).
For more information, see “EventDispatcher class” on page 499.
Example
The following example adds two nodes to the Tree instance my_tr, and then creates two
listener objects, one for
nodeOpen events and one for nodeClose events. When these events
occur, the listener functions call trace statements to display the event and the affected node in
the Output panel.