Daniel, you made my week! That was it!!!
AAAAAAAAAAAAAAAAAAAHHH :-)
On 10/24/07, Daniel Freiman <[EMAIL PROTECTED]> wrote:
>
> 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
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> >
> >
> >
> >
> >
> >
> >
>
>
