In the past I wrote some articles about how to configure Eclipse to get a content assistance for xhtml files in a jee project (things like code completion and mouse over hints). (see: Ganymede and faclets and Eclipse JSF/Facelet Support)
As Thiago dos Santos Prado posted in one of the comments all the stuff of configuration seems to be dispensable in Eclipse Galileo. But still Eclipse galileo is not disposed to support content assistance for xhtml file out of the box. I can't find out why Eclipse ignores xhtml files in most jee projects as this is a standard file format for JSF applications. Maybe that the problem only exists for Maven based projects as maven is a little bit untended in Eclipse IDE.
But it seems to be now very easy to add this missing feature simply by adding an additional content type for xhtml files:
- Open "window" > "Preferences..." and select "General" > "Content Types"
- Next click the button "Add..." button and add the new content type ".xhtml"
- Finally check if the File Association for .xhtml Files is set to "JSP Editor". In my case this is already configured right.
Now you have content assistence for Java Server Faces and also all included JSF third libraries like RichFaces or MyFaces.