Hi Matt,
I create the example that shows the bug, in case I was not missing something.
The example uses an ArrayCollection to fire a property variable and then bind
this variable to the TextInput. In my Application the AC is in a ModelLocator,
and I expect that changes in the AC will be reflected in the textinput with a
little processing that turns the list into a string separated by ";".
In my real case Application I get the ArrayCollection populated with a server
service, and the textinput shows the composed string as expected, then I try to
remove all items, or create a new AC(), and nothig happens.
Here is the example I prepare:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml
"
layout="vertical"
creationComplete="initApp()">
<mx:TextInput id="stringResult"
text="{sessionUsersToString}"/>
<mx:Button label="remove all
items" click="removeAll()"/>
<mx:Binding
source="sessionUsers" destination="sessionUsersToString"/>
<mx:Script>
<![CDATA[
import mx.collections.IViewCursor ;
import mx.collections.ArrayCollection;
[Bindable]
public var sessionUsers:ArrayCollection;
public function initApp():void {
sessionUsers = new ArrayCollection([
{user:"Juan", id:10},
{user:"Carlos", id:20},
{user:"Lucas", id:30}
]);
}
// --- sessionUsersToString
private var _sessionUsersToString:String;
[Bindable]
public function get sessionUsersToString():String {
var users:String = "";
var iterator:IViewCursor =
sessionUsers.createCursor();
while(!iterator.afterLast) {
if(users !=
"")
users += ";";
users +=
iterator.current.user;
iterator.moveNext();
}
return users;
}
public function set sessionUsersToString(value:String):void
{
_sessionUsersToString = value;
}
public function removeAll():void {
sessionUsers.removeAll();
// --- Here I tried several methods
// *BindingUtils.bindProperty
// *sessionUsers = new ArrayCollection();
// ...
}
]]>
</mx:Script>
</mx:Application>
Hope someone could throw some light into this issue.
Thanks.
C.
On 8/7/06, Matt
Chotin <[EMAIL PROTECTED]com>
wrote:
If you are bound to the
ArrayCollection then manipulating the AC itself doesn't re-trigger the binding.
You need to do a re-assignment. If that isn't working make sure
that the variable for your AC is [Bindable] and if you wrote a setter and used
[Bindable(event="…")] that you actually dispatched the event.
From:
[EMAIL PROTECTED] ups.com
[mailto:[EMAIL PROTECTED] ups.com] On Behalf Of Carlos Rovira
Sent: Sunday, August 06, 2006
10:25 AM
To: [EMAIL PROTECTED]ups.com
Subject: [flexcoders] [Flex
2][ArrayCollection][Bug] Bindings don't executing when setting AC to a new
ArrayCollection()
Hi,
I'm experiencing a bug with an ArrayCollection. I want to remove the contents
and the new state should dispatch a Binding, but this is not happen at all.
I was trying several methods:
* setting to null;
* new ArrayCollection();
* calling removeAll()
* calligin refresh() as well
but nothing happens.
I suppose that this should be a known issue, anyone knows some trick to avoid
this problem?
Thanks.
--
::| Carlos Rovira
::| http://www.carlosrovira.com
--
::| Carlos Rovira
::| http://www.carlosrovira.com
