Question

I’m using the Halo AdvancedDataGrid component, in which the default itemEditor for each column is mx.controls.TextInput.

For example, the data provider is:
[CODE][Bindable]
private var labelsGridArray:Array = [ { tag:”apple” }, { tag:”*banana” }, { tag:”carrot” } ];[/CODE]
And the AdvancedDataGrid definition is:
[CODE][/CODE]

If a String from the dataprovider Array is preceded by an asterisk – as is the case for banana in this example – the String needs to be surrounded by square brackets and be displayed in a grey colour.

I tried to do the following:
[CODE]

A colleague told me about using the AdvancedDataGridColumn’s labelFunction attribute. I tried that but was unable to do the following assignment (the id of the column is ‘tag’):
[CODE]tag.itemEditor.htmlText = formattedText;[/CODE]

I get error “Access of possibly undefined property htmlText through a reference with static type mx.core:IFactory.

I tried to both explicitly extract the TextInput itemEditor (like I did for the override set data) AND use the labelFunction, but I couldn’t get both to be in the correct scopes.

Your help is much appreciated,
Bonnie

Answer 1

Try creating your own itemRenderer / itemEditor.

This would be your datagrid:

<fx:Script>
    <![CDATA[
        [Bindable] private var labelsGridArray:Array = [ { tag:"apple" }, { tag:"*banana" }, { tag:"carrot" } ];
    ]]>
</fx:Script>
<mx:DataGrid dataProvider="{labelsGridArray}" >
    <mx:columns>
        <mx:DataGridColumn headerText="Name" itemRenderer="NameItemRenderer"/>
    </mx:columns>
</mx:DataGrid>

And this would be your itemRenderer/editor (NameItemRenderer.mxml)

<s:MXDataGridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009" 
                      xmlns:s="library://ns.adobe.com/flex/spark" 
                      xmlns:mx="library://ns.adobe.com/flex/mx" 
                      focusEnabled="true">
<fx:Script>
    <![CDATA[

        override public function set data(value:Object):void{
            super.data = value;
            if(value.tag.indexOf("*")!= -1){
                lblData.text = "[" + value.tag + "]";
                lblData.setStyle("color",0xFF0000);
            }
            else{
                lblData.text = "" + value.tag ;
                lblData.setStyle("color",0x000000);
            }
        }
    ]]>
</fx:Script>
<s:Label id="lblData" top="0" left="0" right="0" bottom="0"/>

I have used a normal mx:Datagrid and a spark MXDataGridItemRenderer for this, but the way it works will be the same for the AdvancedDataGrid. All you need to do is override set data()

Cheers