Playing with the spark datagrid

I'm Playing with the spark datagrid and have a column set up like so:
<GridColumn width="140" headerText="Margin" headerText.editMode="Margin (editing)" dataField="margin" editable="false" editable.editMode="true" itemRenderer="gridColumnRenderer" >
           </GridColumn>
I would like the item render to change colour based on the state of the outerDocuent, is this possible?
I tried this but can't get to the outerdocument
<?xml version="1.0" encoding="utf-8"?>
<s:ItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
                xmlns:s="library://ns.adobe.com/flex/spark"
                xmlns:mx="library://ns.adobe.com/flex/mx"
                autoDrawBackground="true">
    <s:Label text="{data.margin}" backgroundColor="{   outerDocument.currentState =='editMode'?0xffffff:0xdddddd}"/>
</s:ItemRenderer>

I believe you will need to use GridItemRenderer instead of ItemRenderer as your base class for renderers in the spark DataGrid. Does it work if you change to that?

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Revision: 5019
Author: [email protected]
Date: 2009-02-19 13:17:21 -0800 (Thu, 19 Feb 2009)
Log Message:
ASDoc updates to indicate that some Halo containers do not work with the Spark equiv (ControlBar does not work with Spark Panel/AppControlBar does not work with Spark Application), and indicate that Canvas, Box, Tile, Panel have Spark equivs
QE Notes: None
Doc Notes: None
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flex/sdk/trunk/frameworks/projects/framework/src/mx/containers/Accordion.as
flex/sdk/trunk/frameworks/projects/framework/src/mx/containers/ApplicationControlBar.as
flex/sdk/trunk/frameworks/projects/framework/src/mx/containers/Box.as
flex/sdk/trunk/frameworks/projects/framework/src/mx/containers/Canvas.as
flex/sdk/trunk/frameworks/projects/framework/src/mx/containers/ControlBar.as
flex/sdk/trunk/frameworks/projects/framework/src/mx/containers/HBox.as
flex/sdk/trunk/frameworks/projects/framework/src/mx/containers/Panel.as
flex/sdk/trunk/frameworks/projects/framework/src/mx/containers/TabNavigator.as
flex/sdk/trunk/frameworks/projects/framework/src/mx/containers/Tile.as
flex/sdk/trunk/frameworks/projects/framework/src/mx/containers/VBox.as
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I am evaluating the new Spark DataGrid and I'm having a very strange issue with the behavior of selection in an editable instance.
Here is my test application: http://www.playcalliope.com/flex/DataGridSelectionIssue.html (code here: https://gist.github.com/1129160)
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select the very first cell at the top-left corner of the grid (the one with "Gabriele");
click on it once more, the editor appears;
now click on the cell just to the right of it (the one with "Genta").
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Message was edited to add live example

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The bug will be fixed in the Mega release. To work around the bug you can create a custom editor and remove the "dataGrid.validateNow();" call in DataGridEditor.save().
Here's how I modified your example to workaround the bug:
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
               xmlns:s="library://ns.adobe.com/flex/spark"
               xmlns:mx="library://ns.adobe.com/flex/mx"
               minWidth="955" minHeight="600"
               backgroundColor="#E7E7E7"
               creationComplete="application1_creationCompleteHandler(event)">
    <s:layout>
        <s:HorizontalLayout horizontalAlign="center" verticalAlign="middle"/>
    </s:layout>
    <fx:Script>
        <![CDATA[
            import mx.collections.XMLListCollection;
            import mx.events.FlexEvent;
            protected function application1_creationCompleteHandler(event:FlexEvent):void
                testGrid.dataProvider = new XMLListCollection(testData.item);
        ]]>
    </fx:Script>
    <fx:Declarations>
        <fx:XML id="testData" xmlns="">
            <items>
                <item>
                    <id>1</id>
                    <cognome>Gabriele</cognome>
                    <nome>Genta</nome>
                    <uhm>5</uhm>
                    <bene>molto</bene>
                </item>
                <item>
                    <id>10</id>
                    <cognome>Pinco</cognome>
                    <nome>Pallino</nome>
                    <uhm>10</uhm>
                    <bene>poco</bene>
                </item>
            </items>
        </fx:XML>
        <fx:Component className="MyDefaultEditor">
            <s:DefaultGridItemEditor>
                <fx:Script>
                    <![CDATA[
                        import mx.collections.ICollectionView;
                        import mx.collections.ISort;
                        override public function save():Boolean
                            if (!validate())
                                return false;
                            var newData:Object = value;
                            var property:String = column.dataField;
                            var data:Object = data;
                            var typeInfo:String = "";
                            for each(var variable:XML in describeType(data).variable)
                                if (property == [email protected]())
                                    typeInfo = [email protected]();
                                    break;
                            if (typeInfo == "String")
                                if (!(newData is String))
                                    newData = newData.toString();
                            else if (typeInfo == "uint")
                                if (!(newData is uint))
                                    newData = uint(newData);
                            else if (typeInfo == "int")
                                if (!(newData is int))
                                    newData = int(newData);
                            else if (typeInfo == "Number")
                                if (!(newData is Number))
                                    newData = Number(newData);
                            else if (typeInfo == "Boolean")
                                if (!(newData is Boolean))
                                    var strNewData:String = newData.toString();
                                    if (strNewData)
                                        newData = (strNewData.toLowerCase() == "true") ? true : false;
                            if (property && data[property] !== newData)
                                // If the data is sorted, turn off the sort for the edited data.
                                var sort:ISort = null;
                                if (dataGrid.dataProvider is ICollectionView)
                                    var dataProvider:ICollectionView = ICollectionView(dataGrid.dataProvider);
                                    if (dataProvider.sort)
                                        sort = dataProvider.sort;
                                        dataProvider.sort = null;
                                var oldData:Object = data[property];
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                                if (sort)
                                    ICollectionView(dataGrid.dataProvider).sort = sort;
                            return true;
                    ]]>
                </fx:Script>
            </s:DefaultGridItemEditor>
        </fx:Component>
    </fx:Declarations>
    <s:DataGrid id="testGrid" width="100%" height="100%"
                editable="true" selectionMode="singleCell"
                itemEditor="{new ClassFactory(MyDefaultEditor)}">
        <s:columns>
            <s:ArrayList>
                <s:GridColumn headerText="Prova" dataField="cognome"/>
                <s:GridColumn headerText="Prova1" dataField="nome"/>
                <s:GridColumn headerText="Prova3" dataField="uhm"/>
                <s:GridColumn headerText="Prova4" dataField="bene"/>
            </s:ArrayList>
        </s:columns>
    </s:DataGrid>
</s:Application>

Playing with the spark datagrid

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