This page gathers information about the status of the GroovyJ IntelliJ IDEA plugin and recaps the milestones of the development.
Currently, in the ide/groovyj module in CVS, there's an empty skeleton of a plugin. There's an ant build file to build and deploy the plugin on a debugging instance of IDEA.
So far, syntax highlighting (GROOVY-601) is done thanks to a syntax file defining a groovy "file type". Later, we may perhaps use our own custom highlighting in order to highlight particular parts of the code based on its meaning (semantic vs syntactic highlighting).
Work has started on the run feature (GROOVY-602) which will allow users to run scripts or classes, just like they would run Java programs in IDEA.
No other feature is currently available, and no download link is provided, till we have something working.
For a list of planned (or wished) features, please look at the Features and wish list page.