Although I've succeeded in creating an mxml version of Alex Harui's
CheckBoxDataGrid, I'm new at Flex coding, and my ActionScript version isn't
succeeding. An example would be very helpful. BTW, I can include a 'selected'
column in my dataProvider, or I can leave it out.
In my attempts, the grid is displaying every column in my ArrayCollection,
ignoring ALL of my explicitly defined column-creation properties, which set one
column to be invisible and turns off other properties, such as draggable and
sortable. In mxml you can set the dataProvider and set these column properties,
but in ActionScript, it appears to be the case that if you assign an
ArrayCollection to the dataProvider property, the grid simply uses the
collection as the columns definition.
Also, Alex's drawItem method is blowing up with a TypeError, but not in the
mxml version.
Thanks in advance for the help. Here's what I have so far:
private var grid: CheckBoxDataGrid= new CheckBoxDataGrid;
grid.height=300;
grid.allowMultipleSelection=true;
var selcol:DataGridColumn=new DataGridColumn;
selcol.itemRenderer= new ClassFactory(CheckBoxRenderer);
selcol.editable=true;
selcol.draggable=false;
selcol.sortable=false;
selcol.headerText=""
selcol.visible=true;
selcol.dataField="selected";
grid.columns.push(selcol);
var wordcol:DataGridColumn=new DataGridColumn;
wordcol.dataField="spelling";
wordcol.headerText="spelling";
grid.columns.push(wordcol);
var idcol:DataGridColumn = new DataGridColumn;
idcol.dataField="wrdid";
idcol.visible=false;
idcol.width=0; // attempt to make invisible since visible=false fails
idcol.headerText="id";
grid.columns.push(idcol);
grid.dataProvider =myBindableArrayCollection;
--
My class BindableArrayCollection simply wraps an ObjectProxy around each
element in the array:
import mx.collections.ArrayCollection;
import mx.utils.ObjectProxy;
public dynamic class BindableArrayCollection extends ArrayCollection
{
public function BindableArrayCollection(source:Array=null)
{
for (var s:String in source)
{
source[s] = new ObjectProxy(source[s]);
}
super(source);
}
}
