You you want to implement support of a new tag library for Visual Page Editor (VPE), you need to create a new Eclipse plugin with VPE templates.
The best approach to create VPE templates is to make a copy of an existing template plugin (e.g. org.jboss.tools.vpe.docbook) and modify it with the help of the docs below.
While there are no completely actual docs, there are some old and still useful ones:
- Thread "Where to find documentation"
- How to create a visual DocBook editor in 10 minutes
- Using Tag Library Templates with the JSP Visual Page Editor
- How to Use the create(..) Method