Yes, listData.owner does point to the DG in my change event handler. But when
I
trace(listData.owner.dataProvider) expecting to see an XML data (and that's
what I want) I get a compiling error, if I say proceed trace will show DG but
not its data. What am I doing wrong?
Tracy Spratt <[EMAIL PROTECTED]> wrote:
If a renderer implements the IDropInListItemRenderer interface,
and most controls, like ComboBox do, then it can access listData() as
Dominiques code shows.
Then, the listData.owner property does point to the DG. Note the casting in
Dominiques example.
Tracy
---------------------------------
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of mark
goldin
Sent: Saturday, December 22, 2007 12:02 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] ComboBox ItemRenderer
Is there anything available in set data that will point to the whole
DG, not just the current row?
Alex Harui <[EMAIL PROTECTED]> wrote:
I would update the backing .data too., but the .owner property does
point to the DG.
---------------------------------
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of
Tracy Spratt
Sent: Friday, December 21, 2007 4:18 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] ComboBox ItemRenderer
Dominiques approach is the correct one.
The Flex framework calls the set data() method on every renderer anytime
the underlying data changes. This is because renderers are recycled.
So your renderer always has a reference to the dataProvider item that is
behind it. Use that reference to update the item.
Tracy
---------------------------------
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of
mark goldin
Sent: Friday, December 21, 2007 1:14 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] ComboBox ItemRenderer
No, that's not what I meant. I mean without using any ids, names,
and etc.
Something like other environments have: parent.
Why can't I after I got a reference to an itemRenderer simply go up on an
object chain to get to DG and then talk to its dataProvider:
itemRenderer.parent.parent.gd.dataProvider
updating it with a new data from an itemRenderer? am I completely off
here?
Dominique Bessette - Halsema <[EMAIL PROTECTED]> wrote:
you can talk to anything in your parentApplication by doing
parentApplication.<whatever id name you gave the dataprovider>
the variable parentApplication is a set flex variable that get's all the
data in the main app.
On 12/21/07, mark goldin <[EMAIL PROTECTED]> wrote:
Aha, I see. Let me make sure I understand.
ownerData is defined in set method. That means it's set as many times as
many rows are in the DG, right? But why can't I talk directly to the
dataProvider of my DG? Or using a private var is the direct way?
Dominique Bessette - Halsema <[EMAIL PROTECTED] > wrote:
ownerdata is a variable that is set to the DG's row data.
ownerData = value as XML;
get's the row data. sorry i should have commented it more
On 12/21/07, mark goldin <[EMAIL PROTECTED] > wrote:
Not sure I understand about ownerData. Is it a hard coded
dataProvider name for DG? I am working on a generic solution, I can't use hard
coded names. Sorry, if I am misunderstanding your solution.
Dominique Bessette - Halsema <[EMAIL PROTECTED] > wrote:
Here is the code for the itemRenderer for a combobox i made. The
dataProvider is xml.
<?xml version="1.0" encoding="utf-8"?>
<mx:ComboBox xmlns:mx="http://www.adobe.com/2006/mxml "
rowCount="2" labelField="@name" dataProvider="{weemcStatus}"
change="onSelectionChange(event)">
<mx:Script>
<![CDATA[
import mx.events.ListEvent;
import mx.controls.dataGridClasses.DataGridListData;
import mx.collections.XMLListCollection;
private var ownerData:XML;
//binds the xml row data to the combobox and appends the weemcStatus
override public function set data(value:Object):void
{
if(value){
ownerData = value as XML;
if(ownerData.weemcStatus.toString() == "" ||
ownerData.weemcStatus.toString () == null){
var item:XML = <weemcStatus>WILCO</weemcStatus>;
ownerData.appendChild(item.toXMLString());
}
}
}
override public function get data():Object
{
return ownerData;
}
override public function setFocus():void
{
super.setFocus();
open();
}
//get's the new status and changes the xml status value
private function onSelectionChange(e:ListEvent):void
{
if(selectedItem && ownerData){
var col:DataGridListData = DataGridListData(listData);
var sname:String = selectedItem.toString ();
if(ownerData.weemcStatus.toString() != "" ||
ownerData.weemcStatus.toString() != null){
ownerData.weemcStatus = sname;
}
else{
var item:XML = <weemcStatus>{sname}</weemcStatus>;
ownerData.appendChild(item.toXMLString());
}
}
}
private var xmlStatus:XML =
<weemc>
<status>WILCO</status>
<status>CANTCO</status>
</weemc>;
[Bindable]
private var weemcStatus:Array = (new XMLListCollection(
xmlStatus.status)).toArray();
]]>
</mx:Script>
</mx:ComboBox>
On 12/20/07, mark goldin <[EMAIL PROTECTED] > wrote:
I am using a Combobox as an itemRenderer for one of columns in
a DG. I have managed to intercept "change" event of the combobox. But what do I
do to store new value from Combo into DG's dataProvider for the following data
save to the server?
What is an actual design pattern for that?
Thanks much for help.
