[flexdev] DragDrop Evitando Duplicidade do ItemRenderer

Sat, 14 Mar 2009 20:53:00 -0700 

Boa noite,

      Como eu posso arrastar a copia de um itemrenderer de um list
para outro evitando duplicidade mas sem o uso do dragMoveEnabled?

Aplicando isso ao exemplo:

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";
layout="absolute">

<mx:Script>
        <![CDATA[

                import renderers.ShoppingCartRenderer;
                import mx.events.DragEvent;
                import mx.core.UIComponent;
                import mx.managers.DragManager;
                import mx.collections.ArrayCollection;


[Bindable]
private var shoppingCartArray:Array = [
           {id:1,name:"Snow Peas", price:1.23, quantity:1,
units:"lbs"},
           {id:2,name:"Herb Tofu", price:4.50, quantity:1,
units:"pkg"},
           {id:3,name:"Jasmine Rice", price:5.25, quantity:1,
units:"pkg"},
           {id:4,name:"Mandarin Oranges", price:1.19, quantity:
1,units:"can"},
           {id:5,name:"Barbeque Potato Chips", price:3.15, quantity:1,
units:"bag"},
           {id:6,name:"2% Milk", price:4.95, quantity:1, units:"pkg"},
           {id:7,name:"Chocolate Soy Milk", price:5.10, quantity:1,
units:"pkg"},
           {id:8,name:"Paper Towels", price:6.50, quantity:1, units:"6
rolls"},
           {id:9,name:"Pet Food", price:.56, quantity:6, units:"can"},
           {id:10,name:"Whole Wheat Pasta", price:3.89, quantity:1,
units:"pkg"},
           {id:11,name:"Sesame Bagels", price:4.19, quantity:1,
units:"pkg"}];

[Bindable]
public var pedido:Array = [];


private function CartTotal():void
        {

                var total:Number = 0;

                for(var i:int=0; i < pedidoCar.length; i++)
                        {
                        var record:Object = pedidoCar.getItemAt(i);
                        total += record.price*record.quantity;

                        }
                        cartPed.text = cfmt.format(total);
                        //test.text = i.toString();
        }


private function deleteProd(evt:Event):void
        {
                if (ped.selectedIndex != -1)
                        {
                        pedidoCar.removeItemAt(ped.selectedIndex);
                        }
        }

        ]]>
        </mx:Script>

<mx:CurrencyFormatter id="cfmt" precision="2" />


<mx:ArrayCollection id="shoppingCartDB"
        source="{shoppingCartArray}"
        collectionChange="CartTotal()" />


<mx:ArrayCollection id="pedidoCar"
        source="{pedido}"
        collectionChange="CartTotal()" />


<mx:List id="pro" dataProvider="{shoppingCartDB}" x="481" y="266"
width="421" labelField="quantity"
                alternatingItemColors="[0xEFEFEF,0xFFFFFF]"
                editable="true"
                itemRenderer="renderers.ShoppingCartRenderer"
                editorDataField="quantity"
                textAlign="right"
                dragDrop="onDragDrop(event)"
                dragMoveEnabled="false"
                rendererIsEditor="true"
                dragEnabled="true" itemClick="dropEnable()">
</mx:List>




<mx:List id="ped" x="10" y="266" width="421"
dataProvider="{pedidoCar}" labelField="quantity"
                alternatingItemColors="[0xEFEFEF,0xFFFFFF]"
                editable="true"
                itemRenderer="renderers.ShoppingCartRenderer"
                editorDataField="quantity"
                textAlign="right"
                dragMoveEnabled="false"
                rendererIsEditor="true"
                dragDrop="CartTotal()"
                itemEditEnd="CartTotal()"
                dropEnabled="true"
                dragEnabled="true"
                itemClick="deleteProd(event);">
</mx:List>


<mx:Label x="360" y="486" id="cartPed" text="0" width="71"
textAlign="right" fontWeight="bold" fontSize="12"/>
<mx:Label id="test" x="10" y="488" width="102"/>

</mx:Application>


##################### itemRenderer ###################################


<?xml version="1.0" encoding="utf-8"?>
<mx:HBox xmlns:mx="http://www.adobe.com/2006/mxml";
verticalAlign="middle" paddingRight="4" paddingLeft="4" >

        <mx:Script>
        <![CDATA[


                public function get quantity() : Number
                {
                        return itemQuantity.value;
                }



        ]]>
        </mx:Script>

        <mx:CurrencyFormatter id="cfmt" precision="2" />

        <mx:Label text="{data.name}" fontWeight="bold" fontSize="12"/>
        <mx:Spacer width="100%"/>
        <mx:NumericStepper id="itemQuantity" value="{data.quantity}"
                minimum="0"
                maximum="100"/>
        <mx:Label text="{cfmt.format(data.price*itemQuantity.value)}"
width="66"/>

</mx:HBox>


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