Comments on: Creating custom List renderers, the complete guide (Part I) http://www.arpitonline.com/blog/2008/01/22/creating-custom-list-renderers-the-complete-guide-part-i/ "I write pretty software" Fri, 05 Mar 2010 05:17:23 -0700 http://wordpress.org/?v=2.8.6 hourly 1 By: David Walsh http://www.arpitonline.com/blog/2008/01/22/creating-custom-list-renderers-the-complete-guide-part-i/comment-page-1/#comment-60318 David Walsh Wed, 29 Jul 2009 07:49:35 +0000 http://www.arpitonline.com/blog/?p=107#comment-60318 Again, this is a huge help and resource. Using the clarity gained here, I'm 99% functional with a custom, lightweight renderer. I'm hitting a wall and curious if there's a 'magic bullet' or simple answer... I'm swapping my styleName property based on the type of data object. It works perfectly. I'm also attempting to vary the row's height based on that same idea. So, for example, if the object is type A, the row height is 100 - and if type B, the height is 300. I'm able to do all of this sizing to elements *within* the row (eg: the container holding my various UI elements) but the actual row height always remains constant. Is there a single phase at which I need to invalidate size to achieve that (set, commit props, measure, etc)? I feel like I'm a single line of code away from having a flawless, wicked fast, variable height itemrenderer. Drop a note if anything comes to mind. If it's more complex or I haven't given enough detail, no worries. Cheers and thanks again for the resource. David (@dvdwlsh) Again, this is a huge help and resource. Using the clarity gained here, I’m 99% functional with a custom, lightweight renderer. I’m hitting a wall and curious if there’s a ‘magic bullet’ or simple answer…

I’m swapping my styleName property based on the type of data object. It works perfectly. I’m also attempting to vary the row’s height based on that same idea. So, for example, if the object is type A, the row height is 100 – and if type B, the height is 300.

I’m able to do all of this sizing to elements *within* the row (eg: the container holding my various UI elements) but the actual row height always remains constant.

Is there a single phase at which I need to invalidate size to achieve that (set, commit props, measure, etc)? I feel like I’m a single line of code away from having a flawless, wicked fast, variable height itemrenderer.

Drop a note if anything comes to mind. If it’s more complex or I haven’t given enough detail, no worries.

Cheers and thanks again for the resource.

David (@dvdwlsh)

]]> By: Riguardatta http://www.arpitonline.com/blog/2008/01/22/creating-custom-list-renderers-the-complete-guide-part-i/comment-page-1/#comment-58829 Riguardatta Wed, 08 Jul 2009 23:47:55 +0000 http://www.arpitonline.com/blog/?p=107#comment-58829 Man, that’s great…Thanks for providing such a good info……… Man, that’s great…Thanks for providing such a good info………

]]> By: arpit http://www.arpitonline.com/blog/2008/01/22/creating-custom-list-renderers-the-complete-guide-part-i/comment-page-1/#comment-56667 arpit Wed, 27 May 2009 15:06:43 +0000 http://www.arpitonline.com/blog/?p=107#comment-56667 @Kevin Yes making the data source bindable will remove the warnings but it actually will make the application a little heavier since Flex Builder will generate the data binding code. I often dont bind data that only needs to be set once. Doing it in Actionscript wont give you any warnings at all (list.dataProvider = someArray) @Kevin
Yes making the data source bindable will remove the warnings but it actually will make the application a little heavier since Flex Builder will generate the data binding code. I often dont bind data that only needs to be set once. Doing it in Actionscript wont give you any warnings at all (list.dataProvider = someArray)

]]> By: Kevin Yeandel http://www.arpitonline.com/blog/2008/01/22/creating-custom-list-renderers-the-complete-guide-part-i/comment-page-1/#comment-56660 Kevin Yeandel Wed, 27 May 2009 12:10:02 +0000 http://www.arpitonline.com/blog/?p=107#comment-56660 Hi Thanks for this. Correct me if I am wrong but for those novices like me :o) In the source, db needs to be [Bindable] to avoid "Data binding will not be able to detect assignments to db" warnings. (I'm just here to learn so apologies if wrong). Appreciate these examples. Hi
Thanks for this.
Correct me if I am wrong but for those novices like me :o ) In the source, db needs to be [Bindable] to avoid “Data binding will not be able to detect assignments to db” warnings.

(I’m just here to learn so apologies if wrong). Appreciate these examples.

]]> By: arpit http://www.arpitonline.com/blog/2008/01/22/creating-custom-list-renderers-the-complete-guide-part-i/comment-page-1/#comment-52389 arpit Sat, 21 Mar 2009 03:46:16 +0000 http://www.arpitonline.com/blog/?p=107#comment-52389 @smith, Thats an interesting example but using a VBox will not use the itemRenderer reuse strategy that Lists use that make them efficient for a lot of data. The simpler way, if smooth scrolling is all you are looking for is by just using a mx:Repeater. @smith, Thats an interesting example but using a VBox will not use the itemRenderer reuse strategy that Lists use that make them efficient for a lot of data. The simpler way, if smooth scrolling is all you are looking for is by just using a mx:Repeater.

]]> By: smith http://www.arpitonline.com/blog/2008/01/22/creating-custom-list-renderers-the-complete-guide-part-i/comment-page-1/#comment-52388 smith Sat, 21 Mar 2009 03:31:19 +0000 http://www.arpitonline.com/blog/?p=107#comment-52388 If your're looking for smooth scrolling then check this site: http://www.thomasdecaux.net/flex-components/different-scroll-solution-than-classic-flex-scrollbars.html I haven't tried it yet, but it looks very nice! If your’re looking for smooth scrolling then check this site:

http://www.thomasdecaux.net/flex-components/different-scroll-solution-than-classic-flex-scrollbars.html

I haven’t tried it yet, but it looks very nice!

]]> By: Simon Bailey http://www.arpitonline.com/blog/2008/01/22/creating-custom-list-renderers-the-complete-guide-part-i/comment-page-1/#comment-29572 Simon Bailey Tue, 25 Mar 2008 20:15:11 +0000 http://www.arpitonline.com/blog/?p=107#comment-29572 Those tips were spot on, thanks for the info man ;) Cheers Simon Those tips were spot on, thanks for the info man ;)

Cheers
Simon

]]> By: Duvar Kagidi http://www.arpitonline.com/blog/2008/01/22/creating-custom-list-renderers-the-complete-guide-part-i/comment-page-1/#comment-28018 Duvar Kagidi Sun, 02 Mar 2008 13:10:47 +0000 http://www.arpitonline.com/blog/?p=107#comment-28018 est il availible en Francais, my English not good est il availible en Francais, my English not good

]]> By: Kunhal Parikh http://www.arpitonline.com/blog/2008/01/22/creating-custom-list-renderers-the-complete-guide-part-i/comment-page-1/#comment-26979 Kunhal Parikh Thu, 07 Feb 2008 16:06:05 +0000 http://www.arpitonline.com/blog/?p=107#comment-26979 @Arpit Yo long time no talk, how are you doing? Are you still in the Philadelphia region? Drop me a line, I think you got my e-mail through this? If not its kvp22@drexel.edu @Arpit

Yo long time no talk, how are you doing? Are you still in the Philadelphia region?

Drop me a line, I think you got my e-mail through this? If not its kvp22@drexel.edu

]]> By: arpit http://www.arpitonline.com/blog/2008/01/22/creating-custom-list-renderers-the-complete-guide-part-i/comment-page-1/#comment-26814 arpit Tue, 05 Feb 2008 13:53:24 +0000 http://www.arpitonline.com/blog/?p=107#comment-26814 @Dave, Another option is to use a Repeater instead of the List. Again, they aren't optimized to handle large data but at least you dont have to write a list from scratch. @Dave,
Another option is to use a Repeater instead of the List. Again, they aren’t optimized to handle large data but at least you dont have to write a list from scratch.

]]>