So, I got both the valueCommit and the <Observe /> tag to work when manually setting list.selectedIndex, but not the list.selectedItem property.
You can check out either version ... For those without the <Observe /> tag, just remove those two ... They appear to be functionally equivalent in this case. <?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; xmlns:local="*" xmlns:ac="com.adobe.ac.*"> <mx:Script> <![CDATA[ import mx.collections.ArrayCollection; [Bindable] private var dp : ArrayCollection = new ArrayCollection( [{ name:"test1" }, { name:"test2" }, { name:"test3" }, { name:"test4" }, { name:"test5" }, { name:"test6" }, { name:"test7" }, { name:"test8" }, { name:"test9" }] ); ]]> </mx:Script> <mx:NumericStepper id="stepper" minimum="1" maximum="10" /> <mx:List id="scrollList" selectedIndex="{ stepper.value }" dataProvider="{ dp }" width="150" valueCommit="{ scrollList.scrollToIndex( scrollList.selectedIndex ) }" labelField="name"/> <!--<mx:List id="scrollList" selectedItem="{ dp.getItemAt( stepper.value ) }" dataProvider="{ dp }" width="150" valueCommit="{ scrollList.scrollToIndex( scrollList.selectedIndex ) }" labelField="name"/> --> <mx:List id="scrollList2" selectedIndex="{ stepper.value }" dataProvider="{ dp }" width="150" labelField="name" /> <!--<mx:List id="scrollList2" selectedItem="{ dp.getItemAt( stepper.value ) }" dataProvider="{ dp }" width="150" labelField="name" />--> <ac:Observe source="{ scrollList2.selectedIndex }" handler="{ function() : void { scrollList2.scrollToIndex( scrollList2.selectedIndex ) } }" /> <mx:Button click="{ scrollList.selectedIndex = 10; scrollList2.selectedIndex = 10 }" label="Scroll to end" /> </mx:Application> Tracy Spratt wrote: > > Did you try the commitValue event? > > > > Tracy > > > > ------------------------------------------------------------------------ > > *From:* [email protected] [mailto:[EMAIL PROTECTED] > *On Behalf Of *Tim Hoff > *Sent:* Thursday, October 12, 2006 6:23 PM > *To:* [email protected] > *Subject:* [flexcoders] Re: Binding scroll position to the selected index > > > > Ok, subclass yes. Or, you could watch for the change of the > selectedIndex with the Observe tag. Alex Uhlmann has a good article here: > > http://weblogs.macromedia.com/auhlmann/archives/2006/09/using_binding_s.cfm#more > > <http://weblogs.macromedia.com/auhlmann/archives/2006/09/using_binding_s.cfm#more> > > > -TH > > --- In [email protected], Daniel Wabyick <[EMAIL PROTECTED]> wrote: > > > > > > Ah, that was a good idea, but it doesn't work in my case. > > > > The list is being filtered and the selectedItem is being set via other > > code. Thus the need to bind to selectedItem, as the "change" handler > > won't be called. > > > > I should be able to whip something up fairly easily via a subclass ... > > > > -D > > > > > > > > > > Tim Hoff wrote: > > > > > > Hi Daniel, > > > > > > On a click or change event you could use this: > > > > > > myList.scrollToIndex(myList.selectedIndex); > > > > > > -TH > > > > > > --- In [email protected] > > > <mailto:flexcoders%40yahoogroups.com>, Daniel Wabyick daniel@ wrote: > > > > > > > > > > > > I would like to configure a List class so that it will automatically > > > > scroll to show the selected item whenever the selected index/item > > > > changes. I can't see anyway to bind that using the standard List > > > class, > > > > and it seems like I will have to subclass it in order to work. Am I > > > > missing an easier solution? > > > > > > > > Thanks, > > > > -D > > > > > > > > > > > > > > -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/flexcoders/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
