User plugin for expliciting starting a leiningen project from an editor or from a selected file/project.

lein_headless.clj

(ns lein-headless
  (:require [ccw.e4.dsl :refer [defcommand defhandler defkeybinding]]
            [ccw.e4.model :refer [context-key]])
  (:import [ccw.launching ClojureLaunchShortcut]))

(defn run
  "Try to start a Leiningen Project. If focus is on a ClojureEditor, then first
   try to launch from the editor project, else try to launch from the selection."
  [context]
  (let [editor (context-key context org.eclipse.ui.IEditorPart)]
    (cond
     (instance? ccw.editors.clojure.ClojureEditor editor)
       (future 
         (-> (ClojureLaunchShortcut.)
           (.launch editor nil)))
     :else
       (future
         (-> (ClojureLaunchShortcut.) 
           (.launch (context-key context :active-selection) nil))))))

(defcommand run-lein-headless "RUN as Leiningen Project")
(defhandler run-lein-headless run)
(defkeybinding run-lein-headless "Alt+L P")