Yes, from the get-go I had put that in because I recall having that problem in the past.
Thanks for the suggestion, Shawn ________________________________ From: Simon Lessard [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 25, 2007 3:11 PM To: MyFaces Discussion Subject: Re: [Trinidad] JSF components and div scroll position Hello, It's probably not the problem, but do you have a default constructor in your component class? On 7/25/07, Bertrand, Shawn R < [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > wrote: Sounds good - a very cool extension indeed. So for the time being, I'm trying to implement a custom component that extends CorePanelGroupLayout with the ability to specify an onscroll handler. I have all the necessary parts (component, renderer, taglib, <component> and <renderkit> entries, with first 3 subclassing the necessary classes), but I keep getting an exception when the component is called to instantiate: javax.faces.FacesException: Can't instantiate class: 'com.macom.wsbu.uas.web.faces.component.PanelGroup'. com.sun.faces.application.ApplicationImpl.newThing(ApplicationImpl.java: 728) com.sun.faces.application.ApplicationImpl.createComponent(ApplicationImp l.java:352) javax.faces.webapp.UIComponentTag.createComponent(UIComponentTag.java:10 13) javax.faces.webapp.UIComponentTag.createChild(UIComponentTag.java:1036) javax.faces.webapp.UIComponentTag.findComponent(UIComponentTag.java:749) javax.faces.webapp.UIComponentTag.doStartTag(UIComponentTag.java:429) I've double and triple checked file locations and package names, and nothing out in web land suggests anything helpful. I already have a custom component extended from UIXComponentBase that is working beautifully. Any restrictions with doing this that you know about? Probably something simple that I've overlooked. Thanks in advance, Shawn -----Original Message----- From: Adam Winer [mailto:[EMAIL PROTECTED] Sent: Tuesday, July 24, 2007 5:37 PM To: MyFaces Discussion Subject: Re: [Trinidad] JSF components and div scroll position Once we get 1.0.2 out (hopefully soon) let's look at providing some hooks for DOM replacement during AJAX, something where you get called with something like: // Tellls you that oldDom is about to be replaced with newDom, // and lets you manipulate the dom, or return "true" to block // it or handle it all yourself function domReplaceNotify(oldDom, newDom) { ... see if oldDom contains the tree... ... if it does, copy scrollTop and scrollLeft into newDom // And let the system handle the move for you return false; } -- Adam On 7/24/07, Bertrand, Shawn R <[EMAIL PROTECTED]> wrote: > > I've taken my tree component and added some CSS to enable a scroll bar > around it when it becomes large enough: > > > > inlineStyle="width: 200px; height: 400px; max-height: 400px; > overflow: auto; .... > > > > This works well, but as I expand and collapse nodes in the tree, the scroll > position isn't maintained due to the component being thrown out and > reconstructed via PPR. I wish there was an onscroll on the tree, as this > would give me the hook I need to save the position and I could restore it > via window.onload, but to no avail. > > > > Does anyone have an idea how this might be done? > > > > Thanks in advance, > > > > Shawn Bertrand > > Tyco Electronics > >
