When the actual data comes in, the DataGrid encounters a REFRESH collectionChange event and if you look in ListBase.collectionChangeHandler's REFRESH case, you'll see that the verticalScrollPosition is set to 0.
What you need to do is set the scroll position *after* the data has come in and the DataGrid has processed the REFRESH event. -deepa -----Original Message----- From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of djbrown_rotonews Sent: Tuesday, June 27, 2006 12:42 PM To: flexcoders@yahoogroups.com Subject: [flexcoders] Re: Keeping DataGrid from scrolling to top on update to dataProvider I actually tried this (my dataProvider for the grid is an XMLListCollection being populated by a jsp. The grid has custom item renderers if that's relevant). anyhow, I have an "update" button which will call the jsp and get new results when clicked. I've set it up so the click() method correctly captures the scroll position, calls the jsp, and then sets the scrollToIndex to the previous value of the scroll position. It works great while the "busy cursor" is displayed, but it reverts back to scrolled all the way at the top once the actual data comes in from the jsp (it takes about 3 seconds to update the grid with the new data). any ideas on where the scroll position is being reset? --- In flexcoders@yahoogroups.com, "Deepa Subramaniam" <[EMAIL PROTECTED]> wrote: > > Hi Jordan - > > > > You can keep track of the verticalScrollPosition property in your > DataGrid and upon receving UPDATES, re-set the verticalScrollPosition to > the previous value and the DataGrid will jump to the last scroll > position and show the correct content. > > > > -deepa > > > > ________________________________ > > From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On > Behalf Of Jordan Snyder > Sent: Monday, June 26, 2006 7:34 PM > To: flexcoders@yahoogroups.com > Subject: [flexcoders] Keeping DataGrid from scrolling to top on update > to dataProvider > > > > Hello All, > > I am working on an app in which I poll the server quite frequently to > get new information. The information comes to me in an XML format that > I simply assign as the dataProvider for a DataGrid component. > > I have to keep in consideration the fact that the user may have selected > a certain row, and may want to delete that row even after an update to > the dataProvider is made, so I keep track of the selectedIndex property > and reselect upon an update. > > But if the user has not selected a row, the DataGrid will automatically > scroll to the top upon an update, even if the user has scrolled to the > bottom of the grid. > > Is there a way around this? I found a way to scrollToIndex(), but no > way of getting the currently viewed items. It may have something to do > with the various renderer properties available on the DataGrid, but I > have a very limited understanding of this, so it's over my head. > > Surely this problem has been run into before, but I can't seem to find > the right combination of search terms to figure out a method of solving > it. > > Does anyone have any ideas or proven methods for the problem? Any help > would be greatly appreciated. > > Thank you, > > Jordan Snyder > [EMAIL PROTECTED] > www.jordansnyder.com > -- 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 ------------------------ Yahoo! Groups Sponsor --------------------~--> Something is new at Yahoo! Groups. Check out the enhanced email design. http://us.click.yahoo.com/SISQkA/gOaOAA/yQLSAA/nhFolB/TM --------------------------------------------------------------------~-> -- 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/ <*> 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/
