Eclipse Plugins mit Scala

<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
    <name>de.tutorials.scala.eclipse</name>
    <comment></comment>
    <projects>
    </projects>
    <buildSpec>
            <buildCommand>
            <name>ch.epfl.lamp.sdt.core.scalabuilder</name>
            <arguments>
            </arguments>
        </buildCommand>
        <buildCommand>
            <name>org.eclipse.jdt.core.javabuilder</name>
            <arguments>
            </arguments>
        </buildCommand>
        <buildCommand>
            <name>org.eclipse.pde.ManifestBuilder</name>
            <arguments>
            </arguments>
        </buildCommand>
        <buildCommand>
            <name>org.eclipse.pde.SchemaBuilder</name>
            <arguments>
            </arguments>
        </buildCommand>

    </buildSpec>
    <natures>
        <nature>org.eclipse.pde.PluginNature</nature>
        <nature>org.eclipse.jdt.core.javanature</nature>
        <nature>ch.epfl.lamp.sdt.core.scalanature</nature>
    </natures>
</projectDescription>

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/>
        <classpathentry kind="con" path="ch.epfl.lamp.sdt.launching.SCALA_CONTAINER"/>
    <classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
    <classpathentry kind="src" path="src"/>
    <classpathentry kind="output" path="bin"/>
</classpath>

package de.tutorials.scala.eclipse.actions

import org.eclipse.jface.action.IAction
import org.eclipse.jface.viewers.ISelection
import org.eclipse.ui.IWorkbenchWindow
import org.eclipse.ui.IWorkbenchWindowActionDelegate
import org.eclipse.jface.dialogs.MessageDialog

class ScalaSampleAction extends IWorkbenchWindowActionDelegate  {
    var window :IWorkbenchWindow = null
    
    /**
     * The action has been activated. The argument of the
     * method represents the 'real' action sitting
     * in the workbench UI.
     * @see IWorkbenchWindowActionDelegate#run
     */
    override def run(action:IAction) {
        MessageDialog.openInformation(
            window.getShell,
            "Eclipse Plug-in",
            "Hello, Eclipse & Scala world")
    }

    /**
     * Selection in the workbench has been changed. We 
     * can change the state of the 'real' action here
     * if we want, but this can only happen after 
     * the delegate has been created.
     * @see IWorkbenchWindowActionDelegate#selectionChanged
     */
    override def selectionChanged(action:IAction, selection:ISelection) {
    }

    /**
     * We can use this method to dispose of any system
     * resources we previously allocated.
     * @see IWorkbenchWindowActionDelegate#dispose
     */
    override def dispose() {
    }

    /**
     * We will cache window object in order to
     * be able to provide parent shell for the message dialog.
     * @see IWorkbenchWindowActionDelegate#init
     */
    override def init(window:IWorkbenchWindow ) {
        this.window = window
    }
}