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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.editor.view.descriptive;
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import java.util.ArrayList;
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import java.util.List;
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import org.eclipse.jface.viewers.IStructuredSelection;
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import org.eclipse.swt.dnd.DND;
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import org.eclipse.swt.dnd.DragSourceAdapter;
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import org.eclipse.swt.dnd.DragSourceEvent;
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import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;
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import eu.etaxonomy.cdm.model.description.DescriptionBase;
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import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
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import eu.etaxonomy.taxeditor.editor.view.descriptive.e4.FactualDataPartE4;
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import eu.etaxonomy.taxeditor.model.FeatureNodeContainer;
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/**
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* @author n.hoffmann
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* @created Feb 8, 2011
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*/
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public class DescriptionElementDragListener extends DragSourceAdapter {
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private FactualDataPartE4 part;
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private DescriptionBase<?> description;
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public DescriptionElementDragListener(FactualDataPartE4 part){
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this.part = part;
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}
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/**
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* Method declared on DragSourceListener
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*/
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@Override
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public void dragFinished(DragSourceEvent event) {
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if (!event.doit) {
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return;
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}
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// FIXME what to do here?
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if (event.detail != DND.DROP_NONE) {
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//IStructuredSelection selection = (IStructuredSelection) part.getViewer().getSelection();
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part.getViewer().refresh();
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part.changed(null);
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}
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}
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/**
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* Method declared on DragSourceListener
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*/
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@Override
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public void dragSetData(DragSourceEvent event) {
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IStructuredSelection selection = (IStructuredSelection) part.getViewer()
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.getSelection();
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List<DescriptionElementBase> descriptionElements = new ArrayList<DescriptionElementBase>();
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for (Object object : selection.toList()){
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if(object instanceof DescriptionBase){
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if (!((DescriptionBase) object).getElements().isEmpty()){
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descriptionElements.addAll(((DescriptionBase) object).getElements());
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}
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description = HibernateProxyHelper.deproxy(object, DescriptionBase.class);
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}else if(object instanceof FeatureNodeContainer){
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descriptionElements.addAll(((FeatureNodeContainer) object).getDescriptionElements());
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}else if(object instanceof DescriptionElementBase){
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descriptionElements.add((DescriptionElementBase)object);
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}
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}
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if (DescriptionElementTransfer.getInstance().isSupportedType(
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event.dataType)) {
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if (!descriptionElements.isEmpty()){
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event.data = descriptionElements.toArray(new DescriptionElementBase[descriptionElements.size()]);
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}
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}
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}
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/**
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* Method declared on DragSourceListener
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*/
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@Override
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public void dragStart(DragSourceEvent event) {
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event.doit = !part.getViewer().getSelection().isEmpty();
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}
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}
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