File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes JSF and the fly likes JSF keep page coordinate Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login

Win a copy of REST with Spring (video course) this week in the Spring forum!
JavaRanch » Java Forums » Java » JSF
Bookmark "JSF keep page coordinate" Watch "JSF keep page coordinate" New topic

JSF keep page coordinate

Gabriel Beres
Ranch Hand

Joined: Sep 09, 2006
Posts: 61
Hi Again,

Is there way, to keep the page coordinates in JSF? I have a lengthy page, and it is very annoying, that when the user submits something, the page goes to the top.
Tim Holloway
Saloon Keeper

Joined: Jun 25, 2001
Posts: 17276

When you submit a request, the page that comes back could be totally different than the page that did the submitting, so the old "page coordinate" wouldn't be valid. Since the client doesn't know what the server may do, it doesn't even try.

There are 2 ways around this.

1. Use the HTML anchor tag. If you append a "#name" to the end of a URL (before the query part), that tells the browser to position the displayed page to the named "<a> element. This is hard to do in JSF, because JSF has mostly taken over the URL structure.

2. Use AJAX. If you use AJAX, you don't request a new page, just data that will be used to update the current page. So the browser doesn't lose track of where you were positioned. If you delete the "current position", the browser will simply reposition to someplace reasonably close.

An IDE is no substitute for an Intelligent Developer.
Gabriel Beres
Ranch Hand

Joined: Sep 09, 2006
Posts: 61
Thanks, i will go with ajax.
With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.
subject: JSF keep page coordinate
It's not a secret anymore!