Never mind about this question; I figured out how to do it without
having to change the model; I just add the following inside each
<h:commandLink action="#{t.toggleExpanded}">...</h:commandLink> group:<f:actionListener type="..."/> The class I specify inside the "type" attribute then successfully intercepts each expand/collapse event. So I successfully got the Tree2 control to work using the IBM RAD/RSA IDE, although it still depends upon the MyFaces JSF implementation; I can't get it to work using Sun's RI. - Brendan P.S. I *would* be interested, however, if Sean could elaborate on some of the HTML that's produced by the tree2 control, however. Specifically, when doing a "view source" on what's produced, the HTML appears to be referring to dynamically generated JavaScript. (At least the path that's specified for the JavaScript appears to have a generated ID embedded in it.) Any explanation of this would be much appreciated. -----Original Message----- From: Sean Schofield [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 28, 2005 5:58 PM To: MyFaces Discussion Subject: Re: Handling the "node expanded" action in Tree2 to Get More Data Sorry, haven't had a chance to look into this proposal in detail. Remind me sometime next week if I still haven't responded. I am anxious to improve tree2 but the reorg is taking all of my spare time at the moment. sean On 6/28/05, Martin Marinschek <[EMAIL PROTECTED]> wrote: > I think that sounds quite nice as functionality goes, I am no expert > on the tree2, though. > > Sean having any thoughts on that? > > regards, > > Martin > > On 6/28/05, CONNER, BRENDAN (SBCSI) <[EMAIL PROTECTED]> wrote: > > I'm assuming that, since no one has answered this, that there isn't an > > easy way to do it as written. Therefore, I'm looking into extending the > > Tree2 component so its action takes another parameter: > > toggleActionListener="#{myListener}" > > > > Behind the scenes, if this parameter is specified, the tree component > > would execute addAction() on the expandControl, thus allowing the > > application developer the ability to intercept the expand or collapse > > events and do other things, such as read the database for more data > > beneath that node. > > > > Does this sound like a reasonable approach, or is the equivalent > > functionality already there, and I'm just missing it? > > > > - Brendan > > > > ------------------- > > > > When a use clicks the "expand" icon in a serverside Tree2 component, I > > would like my application to go out and grab more data from the database > > to fill in the details of that node's children. What's the hook in > > Tree2 that I can use to do that? Should I override one of the methods? > > Should I intercept some sort of action? > > > > At first, I tried subclassing TreeNodeBase and overriding the > > getChildren method so it calls a routine in my application to get more > > data. However, this results in having all the data in the entire tree > > retrieved after just clicking on the root, which is not what I want. I > > want just the data for the immediate children retrieved from the > > database when a parent node's "expand" icon is clicked. > > > > Any usage help would be much appreciated! > > > > - Brendan > > > > >
