EDIT

import org.eclipse.core.runtime.IProgressMonitor;

import org.eclipse.core.runtime.IStatus;

import org.eclipse.core.runtime.Status;

import org.eclipse.core.runtime.jobs.Job;

import org.eclipse.jface.viewers.ISelection;

import org.eclipse.jface.viewers.StructuredSelection;

import org.eclipse.swt.widgets.Display;

import eu.etaxonomy.cdm.model.description.PolytomousKey;

import eu.etaxonomy.taxeditor.navigation.NavigationUtil;

import eu.etaxonomy.taxeditor.navigation.key.polytomous.PolytomousKeyViewPart;

import eu.etaxonomy.taxeditor.navigation.key.polytomous.e4.handler.RemotingEditPolytomousKeyNodesHandlerE4;

		PolytomousKeyViewPart view = (PolytomousKeyViewPart) NavigationUtil.getView(PolytomousKeyViewPart.ID, false);

		ISelection selection = view.getSite().getSelectionProvider().getSelection();

		if(selection instanceof StructuredSelection){

			final StructuredSelection structuredSelection = (StructuredSelection) selection;

			Job job = new Job(RemotingEditPolytomousKeyNodesHandlerE4.OPENING_POLYTOMOUS_KEYS){

				@Override

				protected IStatus run(IProgressMonitor monitor) {

					monitor.beginTask(RemotingEditPolytomousKeyNodesHandlerE4.OPENING_POLYTOMOUS_KEYS, structuredSelection.size());

					for(final Object selectedObject : structuredSelection.toArray()){

						if(selectedObject instanceof PolytomousKey){

							Display.getDefault().asyncExec(new Runnable(){

								@Override

								public void run() {

//									NavigationUtil.openEditor((PolytomousKey) selectedObject, PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell());

								}

							});

							monitor.worked(1);

						}

					}

					monitor.done();

					return Status.OK_STATUS;

				}

			};

			job.setPriority(Job.SHORT);

			job.schedule();

		}