Flex 4 disptaching custom event from custom component

Question

This is similar to the question asked here. I am dispatching custom event "ShopEvent" but i am getting error "Type Coercion failed: cannot convert flash.events::Event@81ecb79 to com.events.ShopEvent"

Note: Error is thrown from the parent custom component (3rd code snippet), I have added more details there

This is my custom event. See the first constant, I copy pasted the event name in custom components.

package com.events
{
    import flash.events.Event;

    public class ShopEvent extends Event
    {

        public static var MENU_SELECTED:String = "menuSelected";
        public static var SUBMENU_SELECTED:String = "submenuSelected";
        public static var ITEM_SELECTED:String = "itemSelected";
        public static var NAV_NEXT:String = "navNext";
        public static var NAV_PREVIOUS:String = "navPrevious";
        public static var NAV_LAST:String = "navLast";
        public static var NAV_FIRST:String = "navFirst";
        public static var CLOSE:String = "close";

        public var menuIdx:int;
        //public var menuType:String;
        public var menuId:int;
        public var menuName:String;
        public var itemId:int;
        public function ShopEvent(type:String, bubbles:Boolean=false, cancelable:Boolean=false)
        {
            super(type, bubbles, cancelable);
        }
    }
}

Custom component. Check the metadata tags. The event registered correctly

<?xml version="1.0" encoding="utf-8"?>
<s:Group xmlns:fx="http://ns.adobe.com/mxml/2009" 
         xmlns:s="library://ns.adobe.com/flex/spark" 
         xmlns:mx="library://ns.adobe.com/flex/mx" width="72" height="82"
         mouseChildren="false"
         creationComplete="init()"
         click="onClick()"
         buttonMode="true">
    <s:layout>
        <s:VerticalLayout horizontalAlign="center"/>
    </s:layout>
    <fx:Script>
        <![CDATA[
            import com.events.ShopEvent;

            import mx.controls.Image;
            public var menuId:int;

            [Bindable]
            public var menuText:String;
            [Bindable]
            public var bmp:Bitmap;

            private function init():void{
                //img.addChild(bmp);
            }
            private function onClick():void{
                var e:ShopEvent = new ShopEvent(ShopEvent.MENU_SELECTED);
                e.menuId = menuId;
                e.menuName = menuText;
                dispatchEvent(e);
            }

        ]]>

    </fx:Script>
    <fx:Metadata>
        [Event(name="menuSelected", type="com.events.ShopEvent")]
    </fx:Metadata>
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
    <s:Label text="{menuText}" fontWeight="bold" fontSize="12" width="44"/>
    <mx:Image id = "img" width="57" height="47" source="{bmp}"/>

</s:Group>

Parent custom component. This is parent component of above custom component. It listens to the menuSelected event and it simply routes the event to the listeneres. Check the meatadata tags. Event registration is properly done.

However, the error is coming at

           menus[i].addEventListener( ShopEvent.MENU_SELECTED,function(e:ShopEvent):void{dispatchEvent(e);});

with my knowledge, I dont see any problem in the code. Is there anything wrong in it?

Update

Surprisingly, if I create a "new" instance of shopwevent will solve the problem, but sadly, I need to close all the properties of the event object. I hope this is not a limitation of flex.

                menus[i].addEventListener( ShopEvent.MENU_SELECTED,function(e:ShopEvent):void{dispatchEvent(new ShopEvent(ShopEvent.MENU_SELECTED));});

Complete code

<?xml version="1.0" encoding="utf-8"?>
<s:Group xmlns:fx="http://ns.adobe.com/mxml/2009" 
         xmlns:s="library://ns.adobe.com/flex/spark" 
         xmlns:mx="library://ns.adobe.com/flex/mx"
         width="720" height="605"
         creationComplete="init()" xmlns:shop="UI.shop.*" xmlns:hasu="UI.shop.hasu.*"
         >
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
    <fx:Metadata>
        [Event(name="navNext", type="com.events.ShopEvent")]
        [Event(name="navPrevious", type="com.events.ShopEvent")]
        [Event(name="menuSelected", type="com.events.ShopEvent")]
        [Event(name="submenuSelected", type="com.events.ShopEvent")]
        [Event(name="itemSelected", type="com.events.ShopEvent")]
        [Event(name="close", type="com.events.ShopEvent")]
    </fx:Metadata>

    <fx:Script>
        <![CDATA[
            import com.events.ShopEvent;

            private const MAX_SLOTS:int = 6;

            public var menus:Vector.<ShopMenuItemView>;
            public var itemSlots:Vector.<ShopItemSlotView> = new Vector.<ShopItemSlotView>(MAX_SLOTS);

            private function init():void{
                trace("BEGIN:UI.shop.hasu.ShopView.init");
                initSlots();
            }

            private function initSlots():void{

                for (var i:int = 0;i<itemSlots.length;i++){
                     var slot:ShopItemSlotView = new ShopItemSlotView();
                    itemSlots[i] = slot; 
                    itemSlotsContainer.addElement(slot);
                }
            }

            public function initMenus():void{
                trace("BEGIN:UI.shop.hasu.ShopView.initMenus");
                for (var i:int = 0;i < menus.length;i++){
                    menuContainer.addElement(menus[i]);
                    menus[i].addEventListener(ShopEvent.MENU_SELECTED,function(e:ShopEvent):void{dispatchEvent(e);});
                    //menus[i].addEventListener( ShopEvent.MENU_SELECTED,function(e:ShopEvent):void{dispatchEvent(new ShopEvent(ShopEvent.MENU_SELECTED));});
                }
            }



        ]]>
    </fx:Script>

    <s:layout>
        <s:VerticalLayout />
    </s:layout>
    <s:VGroup name="top">
        <hasu:ShopPlayerAttributesView id="attribsComp"/>
        <s:Group id="menuContainer" name="menus">
            <s:layout>
                <s:HorizontalLayout />
            </s:layout>
        </s:Group>
    </s:VGroup>
    <s:Group>
        <s:layout>
            <s:HorizontalLayout />
        </s:layout>
        <s:Button label="&lt;" />
        <s:Group id = "itemSlotsContainer" name="items">
            <s:layout>
                <s:TileLayout requestedColumnCount="3" requestedRowCount="3"/>
            </s:layout>
        </s:Group>
        <s:Button label="&gt;" />
    </s:Group>
</s:Group>

Answer 1

You must overwrite clone() method for custom event classes. Events could be cloned several times during propagation.