EDIT

package eu.etaxonomy.taxeditor.editor.descriptiveDataSet.handler;

import java.util.Iterator;

import javax.inject.Named;

import org.eclipse.e4.core.di.annotations.Execute;

import org.eclipse.e4.ui.model.application.ui.basic.MPart;

import org.eclipse.e4.ui.services.IServiceConstants;

import org.eclipse.jface.viewers.IStructuredSelection;

import eu.etaxonomy.cdm.api.service.IDescriptiveDataSetService;

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

import eu.etaxonomy.taxeditor.editor.descriptiveDataSet.DescriptiveDataSetNavigator;

import eu.etaxonomy.taxeditor.editor.internal.TaxeditorEditorPlugin;

import eu.etaxonomy.taxeditor.editor.l10n.Messages;

import eu.etaxonomy.taxeditor.model.MessagingUtils;

import eu.etaxonomy.taxeditor.store.CdmStore;

public class DeleteDescriptiveDataSetHandler {

	@Execute

	public void execute(@Named(IServiceConstants.ACTIVE_SELECTION)IStructuredSelection selection,

	        @Named(IServiceConstants.ACTIVE_PART)MPart activePart) {

	    boolean confirm = MessagingUtils.confirmDialog(Messages.DeleteDescriptiveDataSetHandler_DELETE_TITLE, Messages.DeleteDescriptiveDataSetHandler_DELETE_MESSAGE);

	    Object object = activePart.getObject();

	    if(!selection.isEmpty() && confirm && object instanceof DescriptiveDataSetNavigator){

	        Iterator iterator = selection.iterator();

	        while(iterator.hasNext()){

	            Object next = iterator.next();

	            if(next instanceof DescriptiveDataSet){

	                    IDescriptiveDataSetService descriptiveDataSetService = CdmStore.getService(IDescriptiveDataSetService.class);

	                    descriptiveDataSetService.delete(((DescriptiveDataSet) next).getUuid());

	                    DescriptiveDataSetNavigator navigator = (DescriptiveDataSetNavigator) object;

	                    navigator.removeDescriptiveDataSet((DescriptiveDataSet) next);

	                    navigator.getConversationHolder().commit();

	                }

	                else{

	                    MessagingUtils.errorDialog(Messages.DeleteDescriptiveDataSetHandler_DELETE_FAILED_TITLE, DeleteDescriptiveDataSetHandler.class, Messages.DeleteDescriptiveDataSetHandler_DELETE_FAILED_MESSAGE, TaxeditorEditorPlugin.PLUGIN_ID, null, false);

	                    return;

	                }

	        }

	    }

	}

}