How to add implicit imports to an embedded GroovyConsole

I wanted to have a graphical GroovyConsole that had my own APIs automatically imported. This proved to take some time to fix up. This is how it ended up looking. I created this in my normal eclipse-project so that I can easily launch this with the correct classpath already done for me.

TestGUI.java:

package groovy.ui;

import java.lang.reflect.Field;
import java.net.URL;
import groovy.lang.GroovyClassLoader;
import groovy.lang.GroovyShell;

public class TestGUI extends Console
{
    public static void main(String[] args)
    {
        TestGUI gui = new TestGUI();

        gui.run();
    }

    public TestGUI()
    {
        super();
        try
        {
            setup();
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }

    public void setup() throws Exception
    {
        Field shell = 
           Console.class.getDeclaredField("shell");
        shell.setAccessible(true);
        shell.set(this, new OurGroovyShell());
    }
}

OurGroovyShell.java:

package groovy.ui;

import java.util.List;
import org.codehaus.groovy.control.CompilationFailedException;
import groovy.lang.GroovyShell;

public class OurGroovyShell extends GroovyShell
{
    public Object run(String scriptText, 
           String fileName, List list)
        throws CompilationFailedException
    {
        scriptText = "import whatever.*\n" + scriptText;

        String[] args = new String[list.size()];
        list.toArray(args);
        return run(scriptText, fileName, args);
    }
}

Fairly simple in the end. I was fooling around a bit to get this to work at first. This was done with Groovy 1.6.2.