Hi Tom,
What are you doing with this event in set data?
dispatchEvent(new FlexEvent(FlexEvent.DATA_CHANGE));
It's a loop.
-TH
--- In flexcoders@yahoogroups.com, "Tom McNeer" <[EMAIL PROTECTED]> wrote:
>
> Hi,
>
> I began asking about this problem last week and Alex Harui tried to
help me.
> But I did such a bad job of explaining my problem, I don't think he
quite
> understood the issue.
>
> Also, I've done a lot more work over the weekend, stepping through the
> debugger. And my problem is a bit different than I first thought,
anyway.
>
> My application allows users to create multiple sets of product
> configurations. Within each configuration, there are multiple
products, each
> with a possibility of multiple options.
>
> Thus, within a Configuration object, there is an itemAC that is a
collection
> of product objects. Within each Item/Product object, there is an
optionArray
> which holds Option objects. The optionArray cannot be an
arrayCollection,
> because the Product objects are VOs populated from a RemoteObject, and
need
> to match the signature of a matching object on the server.
>
> When the user wishes to view the contents of a Configuration, the
itemAC
> (with its collection of Products) becomes the dataProvider of a
DataGrid:
>
> <mx:DataGrid dataProvider="{config.itemAC}" id="configProducts"
> variableRowHeight="true" width="80%"
updateComplete="setGridHeight(event)" >
> <mx:columns>
> <mx:DataGridColumn dataField="quantity"
> headerText="Quantity" />
> <mx:DataGridColumn dataField="category"
> headerText="Category" />
> <mx:DataGridColumn dataField="name" headerText="Product"
> wordWrap="true" />
> <mx:DataGridColumn headerText="Options" wordWrap="true"
> itemRenderer="views.OptionList" />
> </mx:columns>
> </mx:DataGrid>
>
> However - one cell within the DataGrid needs to display a list of
options.
> The user should see these options as a comma-delimited list,
essentially,
> not a Flex List element or anything like that. So I have created an
> itemRenderer for the Options column which has a simple function that
creates
> the list from the optionArray in the Product which is represented by a
row
> in the DataGrid:
>
> public function setOptionList(options:Array):void{
> optionList = "";
> for (var i:int = 0;i<options.length;i++){
> if (options.length > 1 && i != 0){
> optionList = optionList + ', ';
> }
> optionList += options[i].optionItem;
> }
> }
>
> Since a user may be adding options to a product at any time, the
option list
> must update as an option is added.
> I have tried providing the update in various ways. Currently, I am
> overriding the set data function for the itemRenderer component:
>
> override public function set data(value:Object):void{
> if (value != null){
> super.data = value;
> setOptionList(value.options)
> }
> dispatchEvent(new FlexEvent(FlexEvent.DATA_CHANGE));
> }
>
> The symptom of my problem is that once a few products are added, the
> processor pegs and stays there.
>
> My debugging walkthrough has led to find that as products are added
(with or
> without options), extra instances of the itemRenderer component seem
to be
> generated, and the setOptionList function (triggered by set data) is
called
> over and over.
>
> On the first product added, (with an empty option array), two separate
> instances of the itemRenderer component seem to be created. The
> setOptionList function is called three times, showing two unique
identifiers
> for views.OptionList components. The function is called on the first
> instance (a), then the second (b), then the first again: a,b,a.
>
> When I add a second product (also with an empty option array, the
> setOptionList function is called 14 times. I can see another instance
of
> views.OptionList (c). The setOptionList calls go:
> b,b,a,a,b,c,b,c,a,a,b,c,a,a.
>
> Adding a third product results in 22 calls to the function, on 4
instances.
> The calls go: b,c,b,b,a,a,a,b,c,d,b,c,d,a,a,a,b,c,d,a,a,a.
>
> Can anyone help me understand what's up with all this proliferation?
>
>
> --
> Thanks,
>
> Tom
>
> Tom McNeer
> MediumCool
> http://www.mediumcool.com
> 1735 Johnson Road NE
> Atlanta, GA 30306
> 404.589.0560
>
