RE: [flexcomponents] Weird error when creating Custom Component

[Alex Harui]

Hmm.  It worked for me.  Are you saying it never returns from addChild?

 

________________________________

From: flexcomponents@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Firdosh Tangri
Sent: Tuesday, November 28, 2006 8:03 PM
To: flexcomponents@yahoogroups.com
Subject: [flexcomponents] Weird error when creating Custom Component

 

Hey all, 
            I am trying to create a custom component by extending the
UIComponent class [ AS3 only ] . I followed it pretty much from the
documents on flex.org. But here is the wierd part. If I add the
component using just mxml it works fine 
traces out the statement in the constructor , shows the component. But
if I create the component using just as3 then it doest call the
constructor. Further more if I add the component it goes into a infinite
loop.



cheers :)
firdosh





//MAIN MXML CLASS

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx=" http://www.adobe.com/2006/mxml
<http://www.adobe.com/2006/mxml> " layout="absolute"
creationComplete="init(event);" xmlns:FComponents="org.fcomponents.*">
    <mx:Script>
        <![CDATA[
            import org.fcomponents.Test;
            import mx.containers.Panel;
            import org.fcomponents.NumericSlider;
            import flash.events.Event;
            
            private function init(evt:Event):void{ 
                trace("add");
                var c:NumericSlider=new NumericSlider();
                
                trace("call");
                
                //addChild(c);  // UNCOMMENT THIS FOR INFINITE LOOP 
                //this.addChild(new NumericSlider());
                //<FComponents:NumericSlider />  IF YOU ADD THIS
STATETMENT BELOW IT WORKS FINE
            }
                        
        ]]> 
    </mx:Script>
    
</mx:Application>





//CUSTOM COMPONENT CLASS

package org.fcomponents
{
    import mx.core.UIComponent;
    import mx.controls.Button;
    import mx.controls.VSlider;
    import mx.controls.NumericStepper;
    import flash.events.Event;
    
    [Event (name="change" ,type="flash.events.Event") ]

    public class NumericSlider extends UIComponent 
    {
        private var $stepper:NumericStepper;
        private var $slider:VSlider;
        private var $showSlider:Button;
        private var $valueChanged:Boolean;
        private var $value:Number=0; 
        
        public function NumericSlider(){            
                    
            super();            
            trace("NS Constructor");    
            $valueChanged=false;
        }
        
        override protected function createChildren():void{
            super.createChildren();            
            if(!$stepper){
                $stepper=new NumericStepper();
                addChild($stepper); 
            }
        }
        
        override protected function commitProperties():void{
            super.commitProperties();
            if($valueChanged){
                $valueChanged=false; 
                $stepper.value=$value;
                invalidateDisplayList();
            }
        }    
        
        override protected function measure():void{
            super.measure();
            $stepper.width=100;
            $stepper.height=22;
        }
        
        override protected function
updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void{
            super.updateDisplayList (unscaledWidth,unscaledHeight);
            
        }
    }
}