Flex Error on Simple Custom Event when Implemented in Actionscript (But not in MXML)

Question

Hi,

I'm trying to learn how to use custom events in Flex.

I'm following Oliver Merk's tutorial found here: blog

The custom event works if I implement it using MXML in the main app. But, if I use actionscript, then I get error 1119: Access of possibly undefined property ADD_PRODUCT through a reference with static type Class.

My Event: In the events subdirectory, I've got:

package events {

   import flash.events.Event;

   public class AddProductEvent extends Event {

      public var productName:String;

      public function AddProductEvent( type:String, productName:String ) {

         super( type );
         this.productName = productName;

      }

      override public function clone():Event {
         return new AddProductEvent( type, productName );
      }

   }
}

In the component, I've got a radioButtonGroup

<mx:RadioButtonGroup id="choicesRadioButtonGroup" itemClick="onButtonClick()"/>



private function onButtonClick():void {
            var myEventObj:Event = new AddProductEvent("addProduct", "Flex T-shirt");
            dispatchEvent(myEventObj);
        } 

This is the metadata in the component and the import statement:

<mx:Metadata>
    [Event (name="addProduct", type="events.AddProductEvent")]
</mx:Metadata>

import events.AddProductEvent;

In the main app, I've got:

import events.AddProductEvent;

private function onAddProduct( event:AddProductEvent ):void {
mx.controls.Alert.show('Attached data was ' + event.productName);
}

If I implement the component in the main app like this:

<visualcomponent:PopWindow addProduct="onAddProduct(event)" />

then everything works.

If I implement the component in the main app in actionscript like this, then I get an error:

public function clickHandler2(event:MouseEvent):void {

    if(event.currentTarget.selected){popWindow = new PopWindow;
        queryBuilder(event.currentTarget);
        PopUpManager.addPopUp(popWindow, my_view, false);
        PopUpManager.centerPopUp(popWindow);

            popWindow.addEventListener(AddProductEvent.ADD_PRODUCT, onAddProduct);}

    }

I get the error on the addEventListener line. What am I doing wrong? Any advice?

Thank you.

-Laxmidi

Answer 1

Your AddProductEvent class doesn't seem to expose a public static string called ADD_PRODUCT which has the value "addProduct" which is what it looks like you are trying to do.