I'm being bit by this same situation. Many of my datagrids will
contain columns which need to be edited/rendered using a custom
comboBox control. I want to create a reusable comboBox control that
does what I think the comboBox should already do for me but doesn't.
It seems to me the way to go here is to create your own subclassed
comboBox, then configure it by using it as an inline itemRenderer for
a dataGridColumn... but I am also running into the "access of
undefined property" problem. my TileWindow mxml file contains an
ArrayCollection populated by a database read. I want this
ArrayCollection to be passed into my custom ComboBox control
itemRenderer to be used as it's dataProvider. see code below: (myDP
is a property defined within my custom comboBox component, myArray is
the ArrayCollection property contained within my TileWindow.mxml file)
<mx:DataGrid editable="true" id="dgInvestigators" height="196"
width="100%" >
<mx:columns>
<mx:DataGridColumn width="125" editable="false"
dataField="pi_first" headerText="First Name"/>
<mx:DataGridColumn width="125" editable="false"
dataField="pi_last" headerText="Last Name"/>
<mx:DataGridColumn id="dgDeptCol" width="317"
headerText="Department" dataField="dept_id" >
<mx:itemRenderer>
<mx:Component>
<framework:irComboBox myDP="{myArray}"
</mx:Component>
</mx:itemRenderer>
</mx:DataGridColumn>
</mx:columns>
</mx:DataGrid>
Yet, the compiler tells me the reference to myArray is invalid. What
gives here? (is it me, or are comboBoxes just half baked?) :)
Thanks,
Rick
--- In [email protected], "bhaq1972" <[EMAIL PROTECTED]> wrote:
>
> yes it is out of scope. a way round this (may not be totally
> desirable) as follows
>
> <mx:DataGridColumn headerText="Type" dataField="col3">
> <mx:itemRenderer>
> <mx:Component>
> <mx:ComboBox creationComplete="doThis()">
> <mx:Script><![CDATA[
>
> private function doThis():void
> {
> // need to go up the owner/parent chain until
> // you get access to colEvalType and set
this.dataProvider
>
>
> }
> ]]></mx:Script>
> </mx:ComboBox>
> </mx:Component>
> </mx:itemRenderer>
> </mx:DataGridColumn>
>
> --- In [email protected], "Barry Beattie"
> <barry.beattie@> wrote:
> >
> > thankfully, Brendan Meutzner example helps nicely
> >
> > http://www.visualconcepts.ca/blog/index.cfm/2006/6/22/ComoboBox-
> RendererEditor-for-20
> >
> >
> > although doing something like this (closer to what I'm after)
> >
> > <mx:DataGridColumn headerText="Type"
> dataField="col3">
> > <mx:itemRenderer>
> > <mx:Component>
> > <mx:ComboBox
> dataProvider="{colEvalType}"></mx:ComboBox>
> > </mx:Component>
> > </mx:itemRenderer>
> >
> > </mx:DataGridColumn>
> >
> > I get "Access of undefined property colEvalType" which I think is
a
> > scope thing since further down the mxml file it works fine
> > <mx:ComboBox dataProvider="{colEvalType}" y="240"></mx:ComboBox>
> >
> > should this work?
> >
> > thanx
> > barry.b
> >
>
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