[news.eclipse.platform] Replacing the Project Explorer view's label prov

["John Ruud" <jruud@xxxxxxxxxxxx>]

I'd like to add custom support for *.abc files to the standard Project 
Explorer view (that's based on the Common Navigator framework). This 
includes custom icons based on file content, but also additional actions and 
drop adapters etc.

The problem is that the *.abc files, since they are files, are already 
provided by org.eclipse.ui.navigator.resources' navigatorContent extension 
(org.eclipse.ui.navigator.resourceContent). I was hoping that if my own 
navigatorContent extension was set to a higher priority, the *.abc files 
would be provided by my navigatorContent instead, and therefore its label 
provider etc. would be used. However, instead I see 
org.eclipse.ui.navigator.resourceContent's label provider being invoked, 
followed a couple of seconds later by my navigatorContent's.

I suspect I may be going about this all wrong, as I'm not very familiar with 
the Common Navigator framework. Basically, is there a way of restricting the 
output from an existing navigatorContent's contentProvider, or maybe some 
completely different way of getting this to work (ideally by "extending" 
rather than replacing the Project Explorer view)?

Thanks, John