Ok, I'm stretching into unknown territory here, so if Alex says I'm way off
just ignore me, but here's my thoughts:
You have the line:
_cables = new ArrayCollection( k.toArray() );
This means that you now have two identical ArrayCollections. The internal
arrays are different, but the data inside those arrays might be the same.
Since the class of the values of the arrays are bindable, editing the values
in the array might effect both ArrayCollections. I could see something
going on wrong with. I'm not really sure how to test this theory except for
making an explicit deep copy function instead of using toArray(). That
might be more time than it's worth considering that this is guesswork right
now.
- Dan Freiman
On 10/24/07, Webdevotion <[EMAIL PROTECTED]> wrote:
>
> Daniel and Alex, I am truely thankfull for your help!
>
> This is the complete code:
>
> package be.webdevotion.connguide.model
> {
> [Bindable]
> public class ConnectorModel
> {
> public var id : String;
> public var color : Number;
> public var image : String;
> public var alt : String;
> public var minimum : Number;
> public var maximum : Number;
> public var value : Number = 0;
> public var glossaryID : Number = -1;
> public var source : String = "";
> public function ConnectorModel ( o : Object = null ) : void
> {
> if( o != null )
> {
> for( var prop : String in o )
> {
> if( this.hasOwnProperty( prop ) )
> {
> this[ prop ] = o[ prop ];
> }
> }
> }
> }
> public function toString () : String
> {
> var s : String = "";
> for( var prop : String in this )
> {
> s+= prop + ": " + this[ prop ] + " / ";
> }
> return s;
> }
> }
> }
>
>
>
>
>
>
> On 10/24/07, Daniel Freiman <[EMAIL PROTECTED]> wrote:
> >
> > What is connectorModel? Does it implement IEventDispatcher? Does it
> > throw PropertyChangeEvent or have any Bindable properties? Some of these
> > questions are a shot in the dark.
> >
> >
> > - Dan Freiman
> >
> > On 10/24/07, Webdevotion < [EMAIL PROTECTED]> wrote:
> > >
> > >
> > > If found that I do not get the error when I leave this filterfunction
> > > out:
> > >
> > > public function set cables ( k : ArrayCollection ) : void
> > >
> > > {
> > > _cables = new ArrayCollection( k.toArray() );
> > > //_cables.filterFunction = filterCables; // generates error
> > > // _cables.refresh();
> > > }
> > >
> > > private function filterCables( item : ConnectorModel ) : Boolean
> > > {
> > > return item.value > 0;
> > > }
> > >
> > >
> > >
> > >
> > > On 10/24/07, Alex Harui <[EMAIL PROTECTED] > wrote:
> > > > >
> > > > > Are you doing a reset or remove? Are you removing rows that are
> > > > > locked?
> > > > >
> > > > >
> > > > > ------------------------------
> > > > >
> > > > > *From:* [EMAIL PROTECTED] ups.com [mailto: [EMAIL PROTECTED]
> > > > > * On Behalf Of *Webdevotion
> > > > > *Sent:* Wednesday, October 24, 2007 7:43 AM
> > > > > * To:* [EMAIL PROTECTED] ups.com
> > > > > *Subject:* Re: [Flexcoders] Error from
> > > > > mx\controls\listClasses\ListBase.as
> > > > >
> > > > >
> > > > >
> > > > > That's a good question ... The application is quite big, I'll have
> > > > > to look into that.
> > > > > But yes, it occurs when I go back some screens and reset the
> > > > > dataprovider.
> > > > >
> > > > > Thanks for that fresh insight.
> > > > >
> > > > >
> > > > > On 10/24/07, *Daniel Freiman* < [EMAIL PROTECTED]> wrote:
> > > > >
> > > > > This appears to be happening when you remove an item from the
> > > > > dataProvider. Is there anything unique about the dataProvider or how
> > > > > you're
> > > > > removing the item from the dataProvider?
> > > > >
> > > > > - Dan Freiman
> > > > >
> > > > > On 10/24/07, * Webdevotion * < [EMAIL PROTECTED] > wrote:
> > > > >
> > > > > Hey everyone,
> > > > >
> > > > > I've been hunting a bug down for a while now in a Flex project:
> > > > >
> > > > > * This is the generated error: *
> > > > > TypeError: Error #1009: Cannot access a property or method of a
> > > > > null object reference.
> > > > > *at mx.controls.listClasses::ListBase/collectionChangeHandler()
> > > > > [C:\dev\flex_201_gmc\sdk\frameworks\mx\controls\listClasses\ListBase.as:6496]
> > > > > *
> > > > > at
> > > > > mx.controls.listClasses::TileBase/collectionChangeHandler()[C:\dev\flex_201_gmc\sdk\frameworks\mx\controls\listClasses\TileBase.as:1981]
> > > > > at flash.events::EventDispatcher/dispatchEventFunction ()
> > > > > at flash.events::EventDispatcher/dispatchEvent()
> > > > > at
> > > > > mx.collections::ListCollectionView/dispatchEvent()[C:\dev\flex_201_gmc\sdk\frameworks\mx\collections\ListCollectionView.as:833
> > > > > ]
> > > > > at
> > > > > mx.collections::ListCollectionView/moveItemInView()[C:\dev\flex_201_gmc\sdk\frameworks\mx\collections\ListCollectionView.as:1316
> > > > > ]
> > > > > at
> > > > > mx.collections::ListCollectionView/handlePropertyChangeEvents()[C:\dev\flex_201_gmc\sdk\frameworks\mx\collections\ListCollectionView.as:1124]
> > > > >
> > > > >
> > > > >
> > > > > at
> > > > > mx.collections::ListCollectionView/listChangeHandler()[C:\dev\flex_201_gmc\sdk\frameworks\mx\collections\ListCollectionView.as:1042
> > > > > ]
> > > > > at flash.events::EventDispatcher/dispatchEventFunction ()
> > > > > at flash.events::EventDispatcher/dispatchEvent ()
> > > > > at
> > > > > mx.collections::ArrayList/internalDispatchEvent()[C:\dev\flex_201_gmc\sdk\frameworks\mx\collections\ArrayList.as:518]
> > > > >
> > > > > at
> > > > > mx.collections::ArrayList/itemUpdateHandler()[C:\dev\flex_201_gmc\sdk\frameworks\mx\collections\ArrayList.as:544]
> > > > > at flash.events::EventDispatcher/dispatchEventFunction()
> > > > > at flash.events::EventDispatcher/dispatchEvent()
> > > > >
> > > > >
> > > > > *The rule that throws the error *
> > > // RULE 6493 in ListBase.as
> > > //( found at : C:\Program Files\Adobe\Flex Builder 2 Plug-in\Flex SDK
> > > 2\frameworks\source\mx\controls\listClasses )
> > > // make sure we've generated rows for the actual data
> > > // at startup time we might just have blank rows
> > > if (listItems.length && listItems[lockedRowCount].length )
> > >
> > > *Screenshot*
> > > For those interested, this is the dump of listItems: screenshot
> > > <http://content.screencast.com/media/d25bbc5a-9b36-42ee-8393-b2e2f48929f8_8373bf5e-323c-46b9-94a3-68ac1e9fbb8f_static_0_0_image.png>
> > >
> > >
> > > Any thought are greatly appreciated!
> > > Bram
> > >
> > >
> > >
> > >
> > >
> > >
> > >
>
>
>
>
>
>
>
