Gabriela Trindade Perry: HCI, Design Cognition, Flex

This is something that worths sharing. For those, like me, that are learning to create custom components, a tip on the measure method. Check this script. Check the docs.
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Isso é algo que vale a pena compartilhar. Para todos que, como eu, estão aprendendo a criar componentes customizados, uma dica sobre o método measure. Dá uma olhada no script. Dá uma olhada nos docs.

[code lang="actionscript"]package examples
{
import mx.containers.Canvas;
import mx.controls.LinkButton;

public class Measuring extends Canvas {

private var _closeButton:LinkButton;

public function Measuring(){
super();
}

override protected function createChildren():void{
super.createChildren();

if(!_closeButton){
_closeButton= new LinkButton;
_closeButton.label="FOO";
addChild(_closeButton);

trace("/******* createChildren *******/")
trace("LinkButton width: "+_closeButton.width); //WTF! 0!
trace("LinkButton explicitWidth: "+_closeButton.explicitWidth); //WTF! NaN!
trace("LinkButton measuredWidth: "+_closeButton.measuredWidth); //WTF! 0!
trace("/******* createChildren *******/")
}
}

override protected function measure():void{
super.measure();
trace("/******* measure *******/")
trace("LinkButton width: "+_closeButton.width); //WTF! 0!
trace("LinkButton explicitWidth: "+_closeButton.explicitWidth); //WTF! NaN!
//Of course… it MEASURES… Now it makes sense…
trace("LinkButton measuredWidth: "+_closeButton.measuredWidth); //Good kid: 45
trace("/******* measure *******/")
}

}
}[/code]