User Guide

580 ActionScript classes

removeListener (Selection.removeListener method)

public static removeListener(listener:Object) : Boolean

Removes an object previously registered with Selection.addListener().

Availability: ActionScript 1.0; Flash Lite 2.0

Parameters

listener:Object - The object that will no longer receive focus notifications.

Returns

Boolean - If listener was successfully removed, the method returns a true value. If

listener was not successfully removed--for example, if listener was not on the Selection

object’s listener list--the method returns a value of

false.

Example

The following ActionScript dynamically creates several text field instances. When you select a

text field, information displays in the Output panel. When you click the

remove_btn

instance, the listener is removed and information no longer displays in the Output panel.

this.createTextField("one_txt", 1, 0, 0, 100, 22);

this.createTextField("two_txt", 2, 0, 25, 100, 22);

this.createTextField("three_txt", 3, 0, 50, 100, 22);

this.createTextField("four_txt", 4, 0, 75, 100, 22);

for (var i in this) {

if (this[i] instanceof TextField) {

this[i].border = true;

this[i].type = "input";

}

var selectionListener:Object = new Object();

selectionListener.onSetFocus = function(oldFocus, newFocus) {

trace("Focus shifted from "+oldFocus+" to "+newFocus);

};

Selection.addListener(selectionListener);

remove_btn.onRelease = function() {

trace("removeListener invoked");

Selection.removeListener(selectionListener);

};