April 2004
Intermediate to advanced
606 pages
20h 4m
English
Content preview from JavaServer FacesBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Developing a New Component from Scratch
In Chapter 13 and the previous section of this chapter, you’ve seen how custom renderers can be used to customize the presentation of a standard component, and if that’s not enough, how to extend an existing component to get a component with a slightly different behavior. These options cover most possibilities, and you very rarely need to develop a brand new component class. In fact, I had a hard time coming up with an example for this section. I wanted to develop a fairly simple component to illustrate the main points, but it turns out that all the simple components are provided already as standard JSF components, and almost any customization is better done with a custom renderer.
The only component I could think of that must be implemented from
scratch (except for the basic behavior inherited from
UIComponentBase) is a tree control, where nodes in
a tree structure can be expanded or collapsed. It’s
a far more complex example than what I first had in mind, but I
believe it’s still a good one. Be aware, though,
that this is not for the faint of heart so hold on tight as we dig
deep into the intricacies of the JSF component API and its
interaction with other JSF classes and the request processing
lifecycle.
Figure 14-2 shows the tree control in action,
exploring the component state information captured by the
CaptureStatePhaseListener discussed in Chapter 12.
Figure 14-2. Tree control with captured component state nodes
In Figure 14-2, I use folder ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.