Aneesha
On 11/1/06, Jeff Bischoff <[EMAIL PROTECTED]> wrote:
Sounds painful.
I really hope that a future version of the JSF spec integrates AJAX more
directly into the framework. For now, I am seeing more ajax components
showing up in Tomahawk/Sandbox and that at least is something.
Regards,
Jeff Bischoff
Kenneth L Kurz & Associates, Inc.
Michael Heinen wrote:
> I had also the problem, that the datascroller did not work anymore:
>
> I solved this with by using always the same ids for the links and not
> the pagenr as id suffix.
>
>
>
> Here are some tips:
>
> DataScroller:
>
> I created my own DataScroller with corresponding Tag and Renderer. All
> those classes extend the corresponding HtmlDataScrollers from MyFaces.
>
> It is important that encodeChildren does nothing and you have to call
> scroller.getChildren().clear() in encodeEnd().
>
> Otherwise links could be rendered two times.
>
>
>
> I could fix the problem with the not working links by creating dummy
> links for all pages in renderPaginator
>
> Something like this:
>
> //create dummy links until maxPages is reached. These links should
> not be encoded!
>
> //Otherwise the links are not executed after AJAX refreshs and data
> model updates that result in more pages.
>
> if (idCounter<maxPages)
>
> {
>
> for (;idCounter<maxPages;idCounter++)
>
> {
>
> if (scroller.getAjaxified())
>
> {
>
> // create an AJAX Link
>
> this.getAjaxLink(facesContext, scroller, idCounter,
> idCounter);
>
> }
>
> else
>
> {
>
> this.getLink(facesContext, scroller, idCounter, idCounter);
>
> }
>
> }
>
> }
>
> Note that these dummy links should not be encoded !
>
>
>
> Then I patched the getLink methods:
>
> It is important that the links keep the same ids after ajax refreshs
> independent of the pagenr!!! Otherwise they are not executed.
>
> MyFaces used the pagenr as id suffix for the links and this does not
> work!
>
> You have to use something like a linknr which starts always at 1 and
> runs til maxPaginatorPages.
>
>
>
> DataTable
>
> - use a value binding for the first attribute of the datatable and
> manage this property in your backing bean. e.g. set it to 0 if you sort
> the table
>
> - overwrite or extend
> org.apache.myfaces.component.html.ext.HtmlDataTable
>
> public void setFirst(int first)
>
> {
>
> ValueBinding vb = getValueBinding("first");
>
> if (vb != null)
>
> {
>
> //vb.setValue(getFacesContext(), first);
>
> return;
>
> }
>
> else
>
> if (_preservedDataModel != null)
>
> {
>
> //Also change the currently restored DataModel attribute
>
> _preservedDataModel.setFirst(first);
>
> }
>
> super.setFirst(first);
>
> }
>
>
>
> The above two points are important to get the right page visible in the
> datatable for scrolling or sorting after datamodel updates.
>
>
>
> Hope this helps,
>
> Michael
>
>
>
>
>
> ________________________________
>
> From: Aneesha Govil [mailto: [EMAIL PROTECTED]]
> Sent: Mittwoch, 1. November 2006 09:11
> To: MyFaces Discussion
> Subject: Re: JSF and ajax using phaselistener approach
>
>
>
> Hi Michael,
>
> Here is the description of my specific problem:
>
> I got the datatable, sortheaders and datascroller working with Tomahawk.
> Then I was trying to ajaxify the table loading on the basis of a drop
> down. The table loads with ajax perfectly however, the datascroller and
> sort headers in it have stopped working. Is this a known issue? Does
> tomahawk not work with Ajax4jsf?
>
> Can anyone help me look into how to make this work?
>
> Tell me if you need more details/code to be able to help.
>
> Thanks a lot.
> Regards,
> Aneesha
>
> On 11/1/06, Michael Heinen < [EMAIL PROTECTED]> wrote:
>
> Annesha,
>
>
>
> I use the datatable with datascroller and a4j.
>
> I spent a lot of time to get this running and I had to patch the
> datatable and the datascroller.
>
> What is your specific problem ?
>
> (I don't have the beginning of this thread)
>
>
>
> Michael
>
>
>
> ________________________________
>
> From: Aneesha Govil [mailto:[EMAIL PROTECTED]]
> Sent: Mittwoch, 1. November 2006 06:02
> To: MyFaces Discussion
> Subject: Re: JSF and ajax using phaselistener approach
>
>
>
> Hi Craig,
>
> I tried using Ajax4JSF but the datascrollers and sortheaders stopped
> working as soon as I put the datatable in an ajax-rendered zone.
> Therefore, I had to abandon it. I couldn't get any help on that either.
>
> I will look at the rest of the resources. Thanks a lot for replying.
>
> Regards,
> Aneesha
>
> On 10/31/06, Craig McClanahan < [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]> > wrote:
>
>
>
> On 10/31/06, Aneesha Govil <[EMAIL PROTECTED] > wrote:
>
> Hi,
>
> Can anyone give me links to any resources/examples on Ajax with JSF
> using the PhaseListener approach. I found it on the J2EE Blueprints but
> they work only with Java EE 5. I am using myfaces 1.1.4 (J2EE 1.4). Does
> this approach work with that too? Please give me some links/resources.
>
>
> In addition to the other references people have given, you might want to
> look at the Remoting feature in Shale[1]. It includes a built-in phase
> listener that tries to do all the hard stuff so you don't have to, and
> an extensible Processor architecture so you can plug in your own
> processing logic.
>
> One important factor is that Shale Remoting assumes you do *not* need
> access to the JSF component tree for the original page (thus eliminating
> the overhead of saving and restoring it), or even that the client be a
> JSF page at all. If you need that, you might want to look at
> Ajax4JSF[2] or Dynamic Faces[3]. But, if you just need an easy way to
> hook incoming requests to back end business logic, and like the ability
> to use JSF's managed beans and _expression_ evaluation capabilities,
> Remoting might be useful to you.
>
> (Incidentally, Shale Remoting is what many of the Blueprints AJAX
> components are using under the covers to acccess static resources, or
> connect to server side event handlers.)
>
> Craig
>
> [1] http://shale.apache.org/shale-remoting/
> [2] https://ajax4jsf.dev.java.net/
> [3] https://jsf-extensions.dev.java.net/
>
>
>
> Any help is appreciated.
>
> Thanks a lot.
> Regards,
> Aneesha
>
>
>
>
>
>
>
>
