Comments on: Setting an effect when the items in a data provider change on a List control in Flex http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/ Just a bunch of Adobe Flex Examples Sun, 12 Feb 2012 19:26:49 +0000 hourly 1 By: Brian http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/comment-page-1/#comment-7385 Brian Tue, 30 Mar 2010 14:35:15 +0000 http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/#comment-7385 Nice one, the itemsChangedEffect example for Actionscript also works with TileList. Thanks Brian Nice one, the itemsChangedEffect example for Actionscript also works with TileList.

Thanks

Brian

]]> By: myIP http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/comment-page-1/#comment-6605 myIP Mon, 14 Dec 2009 21:56:04 +0000 http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/#comment-6605 I have added a comment to an existing bug (see link below). I am not sure if it will reactivate the bug or not. If you know it doesnt, let me know for I can post a new bug/enhancement. https://bugs.adobe.com/jira/browse/SDK-15034 I have added a comment to an existing bug (see link below). I am not sure if it will reactivate the bug or not. If you know it doesnt, let me know for I can post a new bug/enhancement.

https://bugs.adobe.com/jira/browse/SDK-15034

]]> By: Peter deHaan http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/comment-page-1/#comment-6509 Peter deHaan Wed, 02 Dec 2009 20:57:44 +0000 http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/#comment-6509 @Brian, I don't believe that this currently is supported by the Spark List control. I suggest filing a bug/enhancement at http://bugs.adobe.com/flex/ and having 20 of your closest friends vote on it. (Post the bug number here and I'll vote!) Peter @Brian,

I don’t believe that this currently is supported by the Spark List control. I suggest filing a bug/enhancement at http://bugs.adobe.com/flex/ and having 20 of your closest friends vote on it. (Post the bug number here and I’ll vote!)

Peter

]]> By: Brian http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/comment-page-1/#comment-6508 Brian Wed, 02 Dec 2009 19:47:57 +0000 http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/#comment-6508 Hi Peter, It looks like this property disappeared in Flex 4. Do you have a way to do this with a spark list? Thanks. Hi Peter,

It looks like this property disappeared in Flex 4. Do you have a way to do this with a spark list?

Thanks.

]]> By: Emmanuel http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/comment-page-1/#comment-6149 Emmanuel Thu, 29 Oct 2009 07:36:25 +0000 http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/#comment-6149 @Peter Hello Peter, Thank you very much for your assistance, it's been incredible, I have found the my answer in both of your versions. Again, thank you! you've been terrific. Thanks. Emmanuel @Peter

Hello Peter,
Thank you very much for your assistance, it’s been incredible, I have found the my answer in both of your versions. Again, thank you! you’ve been terrific.

Thanks.
Emmanuel

]]> By: Peter deHaan http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/comment-page-1/#comment-5954 Peter deHaan Thu, 08 Oct 2009 02:14:49 +0000 http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/#comment-5954 Or, if you're trying to update a List when the DateChooser changes it's displayed month, you could try something like this: <pre lang="mxml"> <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Script> <![CDATA[ import mx.events.DateChooserEvent; protected function scrollList():void { lst.scrollToIndex(datChooser.displayedMonth); } ]]> </mx:Script> <mx:List id="lst" labelField="lbl" width="100" rowCount="1" verticalScrollPolicy="off"> <mx:dataProvider> <mx:Object lbl="Jan - Item 1" /> <mx:Object lbl="Feb - Item 2" /> <mx:Object lbl="Mar - Item 3" /> <mx:Object lbl="Apr - Item 4" /> <mx:Object lbl="May - Item 5" /> <mx:Object lbl="Jun - Item 6" /> <mx:Object lbl="Jul - Item 7" /> <mx:Object lbl="Aug - Item 8" /> <mx:Object lbl="Sep - Item 9" /> <mx:Object lbl="Oct - Item 10" /> <mx:Object lbl="Nov - Item 11" /> <mx:Object lbl="Dec - Item 12" /> </mx:dataProvider> </mx:List> <mx:DateChooser id="datChooser" scroll="scrollList();" creationComplete="scrollList();" /> </mx:Application> </pre> Peter Or, if you’re trying to update a List when the DateChooser changes it’s displayed month, you could try something like this:

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
 
    <mx:Script>
        <![CDATA[
            import mx.events.DateChooserEvent;
 
            protected function scrollList():void {
                lst.scrollToIndex(datChooser.displayedMonth);
            }
        ]]>
    </mx:Script>
 
    <mx:List id="lst" labelField="lbl" width="100" rowCount="1" verticalScrollPolicy="off">
        <mx:dataProvider>
            <mx:Object lbl="Jan - Item 1" />
            <mx:Object lbl="Feb - Item 2" />
            <mx:Object lbl="Mar - Item 3" />
            <mx:Object lbl="Apr - Item 4" />
            <mx:Object lbl="May - Item 5" />
            <mx:Object lbl="Jun - Item 6" />
            <mx:Object lbl="Jul - Item 7" />
            <mx:Object lbl="Aug - Item 8" />
            <mx:Object lbl="Sep - Item 9" />
            <mx:Object lbl="Oct - Item 10" />
            <mx:Object lbl="Nov - Item 11" />
            <mx:Object lbl="Dec - Item 12" />
        </mx:dataProvider>
    </mx:List>
 
    <mx:DateChooser id="datChooser"
            scroll="scrollList();"
            creationComplete="scrollList();" />
 
</mx:Application>

Peter

]]> By: Peter deHaan http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/comment-page-1/#comment-5953 Peter deHaan Thu, 08 Oct 2009 02:01:20 +0000 http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/#comment-5953 @Emmanuel, I'm not sure I understand your question, but if you're trying to create a List that only displays 1 item at a time and doesn't display a vertical scroll bar, this should get you started: <pre lang="mxml"> <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:List id="lst" labelField="lbl" width="100" rowCount="1" verticalScrollPolicy="off"> <mx:dataProvider> <mx:Object lbl="One" /> <mx:Object lbl="Two" /> <mx:Object lbl="Three" /> <mx:Object lbl="Four" /> <mx:Object lbl="Five" /> <mx:Object lbl="Six" /> <mx:Object lbl="Seven" /> <mx:Object lbl="Eight" /> <mx:Object lbl="Nine" /> </mx:dataProvider> </mx:List> </mx:Application> </pre> Peter @Emmanuel,

I’m not sure I understand your question, but if you’re trying to create a List that only displays 1 item at a time and doesn’t display a vertical scroll bar, this should get you started:

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
 
    <mx:List id="lst" labelField="lbl" width="100" rowCount="1" verticalScrollPolicy="off">
        <mx:dataProvider>
            <mx:Object lbl="One" />
            <mx:Object lbl="Two" />
            <mx:Object lbl="Three" />
            <mx:Object lbl="Four" />
            <mx:Object lbl="Five" />
            <mx:Object lbl="Six" />
            <mx:Object lbl="Seven" />
            <mx:Object lbl="Eight" />
            <mx:Object lbl="Nine" />
        </mx:dataProvider>
    </mx:List>
 
</mx:Application>

Peter

]]> By: Emmanuel http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/comment-page-1/#comment-5945 Emmanuel Tue, 06 Oct 2009 23:25:58 +0000 http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/#comment-5945 Thank you for this post. It seems to have all the elements that may lead to my answer: I have a flex list small enough to displays one item at a time and this list contains 12 items. I want to get rid of the scroll, and have the list switch display whenever calendar months are scrolled, however, initially, this list should display the item relative to the current month. I will use whatever help I can get. Please. Thank you. Thank you for this post. It seems to have all the elements that may lead to my answer:
I have a flex list small enough to displays one item at a time and this list contains 12 items. I want to get rid of the scroll, and have the list switch display whenever calendar months are scrolled, however, initially, this list should display the item relative to the current month.

I will use whatever help I can get. Please.

Thank you.

]]> By: Andrew http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/comment-page-1/#comment-3490 Andrew Thu, 26 Mar 2009 17:07:17 +0000 http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/#comment-3490 This is perfect - and so simple. However, there's one small detail that I find annoying. In my application, I have rows that are quite tall (about 80 pixels or so), and when the "delete" animation moves everything up, there is a small jump up at the very end. It makes the animation feel clunky. I noticed it is the same in your demo but your rows are not that tall so it's not as noticeable - but still there. Is this something that can be fixed? I tried suspendbackgroundprocessing to see if that would help but no luck. Andrew. This is perfect – and so simple.

However, there’s one small detail that I find annoying. In my application, I have rows that are quite tall (about 80 pixels or so), and when the “delete” animation moves everything up, there is a small jump up at the very end. It makes the animation feel clunky.

I noticed it is the same in your demo but your rows are not that tall so it’s not as noticeable – but still there.

Is this something that can be fixed? I tried suspendbackgroundprocessing to see if that would help but no luck.

Andrew.

]]> By: onur http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/comment-page-1/#comment-3489 onur Tue, 03 Feb 2009 21:45:21 +0000 http://blog.flexexamples.com/2008/07/29/setting-an-effect-when-the-items-in-a-data-provider-change-on-a-list-control-in-flex/#comment-3489 Hi I searched alot but couldn't find any clue , As I understand I cant use this itemsChangeEffect on datagrid so what else can I use instead. Hi I searched alot but couldn’t find any clue , As I understand I cant use this itemsChangeEffect
on datagrid so what else can I use instead.

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