Best way of passing values from a button with as3 event - actionscript-3

Question

I develop my own way of doing this simple task. However, I'm now wondering if there is a better way to do it.
The buttons:
var menuBtnEscrit:MovieClip = new MovieClip();
var mbe:btnEscritorio = new btnEscritorio();
menuBtnEscrit.addChild(mbe);
menuBtnEscrit.val = "escrit";
menuBtnEscrit.x = 80;
menuBtnEscrit.addEventListener(MouseEvent.CLICK, novoCont);
dMenu.addChild(menuBtnEscrit);
var menuBtnPublic:MovieClip = new MovieClip();
var mbp:btnPublic = new btnPublic();
menuBtnPublic.addChild(mbp);
menuBtnPublic.val = "public";
menuBtnPublic.x = 244;
menuBtnPublic.addEventListener(MouseEvent.CLICK, novoCont);
dMenu.addChild(menuBtnPublic);
And I can keep going, or create buttons trough some algorithm, and put more properties and take advantage of a MovieClip.
The handler:
private function novoCont(e=null){
if(e!=null) selecCont = new String(e.target.parent.val);
clearDisplay(dSubMenu);
clearDisplay(dConteudo);
var func:String = "cont_"+selecCont;
this[func]();
}
As you can see, there is some common task for all buttons.
If I click the first button, it will call cont_escrit() function. This mechanics works, but it is the best practice? Is there a way of optimize it?

Answer 1

public class BaseButton extends Button {
private var _func:Function;
public function get handler():Function {
return _func;
}
public function set handler(value:Function):void {
_func = value;
}
}
So hero you can create mbe like this
mbe = new BaseButton ();
mbe.hanler = cont_escrit;
The event hanler would be
private function novoCont(e=null){
if(e!=null) {
var selecContent:BaseButton = e.targe as BaseButton ;
var handler:Function = selecContent.handler;
handler();
}
}
Here is an example.
var menuBtnEscrit:MovieClip = new MovieClip();
var mbe:btnEscritorio = new btnEscritorio();
menuBtnEscrit.addChild(mbe);
//menuBtnEscrit.val = "escrit";
menuBtnEscrit.func = this.cont_escrit;
menuBtnEscrit.x = 80;
menuBtnEscrit.addEventListener(MouseEvent.CLICK, novoCont);
private function novoCont(e=null){
if(e!=null) {
var mc:MovieClip = e.target as MovieClip;
var func:Function = mc.func;
func();
}
clearDisplay(dSubMenu);
clearDisplay(dConteudo);
}