[flexcoders] programatically assigning an ArrayCollection as the DataProvider bug...

Wed, 12 Apr 2006 11:11:24 -0700

I didn't see this in the known issues. but I'll attempt to explain whats going on:

Here is my Code (i'll explain the bug at the end):
DGTest.mxml
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns="*" layout="absolute" creationComplete="init();"
    pageTitle="DataGrid Test">
<mx:Script>
    <![CDATA[
        import mx.utils.ArrayUtil;
        import com.crap.vo.ResourceVO;
        import mx.collections.ArrayCollection;
       
        [Bindable]
        public var dataObj:ArrayCollection;
        [Bindable]
        public var objTemp:ResourceVO = new ResourceVO();   

        private function init():void{
            dataObj = new ArrayCollection();
           
            var obj1:ResourceVO = new ResourceVO();   
            obj1.value = "foo-0";
            obj1.key = "bar-0";
            dataObj.addItem(obj1);
           
            var obj2:ResourceVO = new ResourceVO();   
            obj2.value = "foo-1";
            obj2.key = "bar-1";
            dataObj.addItem(obj2);
           
            var obj3:ResourceVO = new ResourceVO();   
            obj3.value = "foo-2";
            obj3.key = "bar-2";
            dataObj.addItem(obj3);
           
            dg.dataProvider = dataObj;
        }
       
        private function selectRow():void{
            objTemp = ResourceVO(dg.selectedItem);

        }
       
    ]]>
</mx:Script>
    <mx:HBox width="90%" height="90%" horizontalCenter="0" verticalCenter="0">
        <mx:Panel layout="absolute" height="50%" width="50%">
            <mx:VBox width="443" height="90%" horizontalCenter="1" verticalCenter="-1">
                <mx:DataGrid id="dg" width="100%" height="100%"
                    change="selectRow();"
                    editable="true"
                    >
                    <mx:columns>
                        <mx:DataGridColumn headerText="Key" dataField="key"/>
                        <mx:DataGridColumn headerText="Value" dataField="value"/>
                    </mx:columns>
                </mx:DataGrid>
            </mx:VBox>
        </mx:Panel>
        <mx:Panel width="50%" height="50%" layout="absolute">
            <mx:Form x="10" y="10" height="156" width="445">
                <mx:FormItem label="Key:">
                    <mx:TextInput id="txtKey" data=""/>
                </mx:FormItem>
                <mx:FormItem label="Value:">
                    <mx:TextInput id="txtValue" data=""/>
                </mx:FormItem>
            </mx:Form>
        </mx:Panel>
    </mx:HBox>
</mx:Application>

ResourceVO.as
package com.crap.vo {
    import com.crap.mvc.vo.ValueObject;
    import mx.resource.Locale;
    import mx.controls.listClasses.BaseListData;
    import mx.controls.listClasses.IDropInListItemRenderer;

    import mx.data.IManaged;
    import mx.data.utils.Managed;
    import mx.core.mx_internal;
   
    [Bindable]
    public class ResourceVO implements ValueObject{
        public var key:String = "";
        public var value:String = "";
        public var locale:Locale = new Locale("eng_us");
       
       
    }
}



The Issue:
When I view this application, it works as expected: it shows the datagrid with the three items and when I click on it, the fields to the right are populated. However, the blue selection highlight doesn't move off of the last item in the list! I have also sceen this issue in a ComboBox.

Any ideas as to why this is happening?

-JB

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