>From: Simon Kitching <[EMAIL PROTECTED]> > > Brad Smith wrote: > > I was wondering how a custom ViewHandler is managed in MyFaces. A custom > > view handler seems to be an elegant solution to a problem I am dealing > > with, yet I will also be using Facelets. > > > > Facelets uses a decorator pattern in it's ViewHandler, that is the > > constructor takes a base ViewHandler as the only argument. > > > > I am wondering how to easily chain ViewHandlers so that my custom > > ViewHandler can decorate the FaceletViewHander (or other ViewHandler > > such as the default ViewHandler for MyFaces). > > It's very simple. I did it just a week or so ago; it was an attempt at > fixing something that turned out easier in another way so I've deleted > that code however here's what I remember: > > First write a subclass of ViewHandler that takes another ViewHandler as > a parameter to the constructor. This constructor will be called passing > the "preceding" viewhandler instance so you can chain calls to it from > your custom class. > > Second, add the following to your faces config file: > <application> > <view-handler>example.MyViewHandler</view-handler> > </application> > > > All done. >
Trinidad also has an interesting pluggable view handler. They call it an InternalView handler. The basic idea is that there is a properties file that you register viewIds [1] that are associated with internal views. Next, you provide your custom implementation of the InternalView interface [2]. [1] http://svn.apache.org/viewvc/shale/sandbox/shale-clay-trinidad/src/main/resources/META-INF/org.apache.myfaces.trinidad.render.InternalView.properties?view=log [2] http://svn.apache.org/viewvc/shale/sandbox/shale-clay-trinidad/src/main/java/org/apache/shale/clay/PageHandler.java?view=markup Gary > Regards, > > Simon >
