Adobe FLEX 2 - CREATING AND EXTENDING COMPONENTS Manual page 129

The following example code defines a component named TextAreaFontControlGetSet that
replaces the public property definition for the
public properties as variables" on page
package myComponents
{
// as/myComponents/TextAreaFontControlGetSet.as
import mx.controls.TextArea;
import flash.events.KeyboardEvent;
import flash.events.Event;
public class TextAreaFontControlGetSet extends TextArea
{
public function TextAreaFontControlGetSet()
{
super();
addEventListener("keyDown", myKeyDown);
addEventListener("creationComplete", myCreationComplete);
}
private var currentFontSize:Number;
public var minFontSize:Number = 5;
// Define private variable for maxFontSize.
public var _maxFontSize:Number = 15;
// Define public getter method.
public function get maxFontSize():Number {
return _maxFontSize;
}
// Define public setter method.
public function set maxFontSize(value:Number):void {
if (value <= 30) {
_maxFontSize = value;
} else _maxFontSize = 30;
}
private function myCreationComplete(eventObj:Event):void {
// Get current font size
currentFontSize = getStyle('fontSize');
}
// keyDown event handler.
private function myKeyDown(eventObj:KeyboardEvent):void {
// Was Ctrl key pressed?
if (eventObj.ctrlKey)
{
switch (eventObj.keyCode) {
127:
// Was Ctrl-I pressed?
Adding properties and methods to a component
property shown in
maxFontSize
"Defining
129