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Flex ItemRenderer in grid no longer uses datagrid styling.

Posted on 2010-09-20
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Last Modified: 2013-11-11
I have a datagrid with a column that uses an ItemRenderer (Text component since it is multi-lined) to set the font style to italics when the column contains a certain value.  This works fine.  My problem is that the column no longer displays the css styles set for the datagrid.  The rollover color is working, but the textRollOverColor and textSelectedColor are no longer working.  How do I get my Text ItemRenderer to maintain the datagrid styles?  Thanks.
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Question by:trudyhlittle
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petiex earned 250 total points
ID: 33726467
I think the problem is that the mx.controls.Text component does not have a textRollOverColor or textSelectedColor style.

To simulate the textRollOverColor style in the renderer, you could add event listeners to the mouseOver and mouseOut events to change the Text control's style["color"] to the roll-over color and back to the default color, respectively. Then for the textSelectedColor, you could change the text color on the focusIn and focusOut events of the dataGridColumn.

OR, I think you could just extend the default DataGridItemRenderer, override the set data function to conditionally set the style to italic using something like the attached code, and then, to allow for multi-line text, just set variableRowHeight="true" on the DataGrid, and set wordWrap="true" on the DataGridColumn.
package testflex {
import mx.controls.dataGridClasses.DataGridItemRenderer;

public class TestRenderer extends DataGridItemRenderer {
    public function TestRenderer() {
        super();
    }
    public override function set data(data:Object):void{
        if(data["clam"]=="try"){// set the field value where you want to italicize
            setStyle("fontStyle", "italic");
        }
        super.data = data;
    }
}
}

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Author Closing Comment

by:trudyhlittle
ID: 33726922
Thanks a bunch.  I tried using the MouseOver and MouseOut events originally.  This worked if the user was actually over the data column itself, however, if they were hovering over another column when the were selected a row, the rollovers weren't displayed.  Extending the DataGridItemRenderer worked and with a lot less coding.  Thanks.
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