Allow to support Jython for OmegaT Scripting

enable_jython.groovy

/*
 *  Allow to support Jython for OmegaT Scripting
 *
 *  Usage: step 1. Get embedding Jython from http://www.jython.org/
 *         step 2. Adjust config setting and run this script
 *  Note : It's enabling Jython just while current session.
 *  Hint : Put this script to <ScriptsDir>/application_startup folder
 *         to automatically execution at every time OmT launching.
 *  Caution: This script is very hacky. Proceed at your own risk.
 *
 * @author  Yu Tang
 * @date    2014-12-13
 * @version 0.1
 */

//################## config start ##################
PATH_TO_JYTHON_JAR = /C:\Absolute\Path\To\Your\jython.jar/
//################## config end ##################

import org.omegat.gui.scripting.ScriptingWindow
import org.omegat.gui.scripting.ScriptsMonitor

// append jython.jar to class-path at runtime
cl = ScriptingWindow.class.classLoader
cl.appendToClassPathForInstrumentation PATH_TO_JYTHON_JAR
def win = ScriptingWindow.window
win.manager.init cl

// refresh scripts list - display .py files
def monitor = win.monitor
monitor.stop()
monitor = new ScriptsMonitor(win, win.m_scriptList, win.availableScriptExtensions)
monitor.start win.m_scriptsDirectory

// refresh supported scripting engine list - Do you see 'jython'?
console.println win.listScriptEngine()
return null