[Groovy] Class TagLibAdapter

Adapts Grails taglibs for use in the template engine. An adapter may be created like this:

     def model = [:]
     def tpl = template.make(model)
     model.g = new TagLibAdapter(tpl)
     model.g.registerTagLib(SimpleTagLib)
 

where SimpleTagLib is:

     class SimpleTagLib {
        def emoticon = { attrs, body ->
            out << body() << (attrs.happy == 'true' ? " :-)" : " :-(")
        }
     }
 

Then it can be used inside a template like this:

     g.emoticon(happy:'true') { 'Hi John' }
 

Performance-wise, it would be better to reimplement the taglib, but this makes it easier to reuse existing code.

Authors:

Cdric Champeau