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/**
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* Copyright (C) 2014 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.derivate;
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import org.eclipse.jface.util.LocalSelectionTransfer;
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import org.eclipse.jface.viewers.ISelection;
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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.taxeditor.editor.EditorUtil;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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/**
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* @author pplitzner
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* @date 18.03.2014
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*
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*/
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public class DerivateDragListener extends DragSourceAdapter{
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private final DerivateView derivateView;
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/**
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* @param derivateView
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*/
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public DerivateDragListener(DerivateView derivateView) {
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this.derivateView = derivateView;
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}
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@Override
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public void dragSetData(DragSourceEvent event) {
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if (LocalSelectionTransfer.getTransfer().isSupportedType(event.dataType)) {
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DerivateViewSelection derivateViewSelection = new DerivateViewSelection(derivateView.getViewer().getSelection(), derivateView);
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LocalSelectionTransfer.getTransfer().setSelection(derivateViewSelection);
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}
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}
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@Override
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public void dragStart(DragSourceEvent event) {
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if(derivateView.isDirty()){
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event.doit = false;
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MessagingUtils.warningDialog(DerivateView.VIEW_HAS_UNSAVED_CHANGES, this, DerivateView.YOU_NEED_TO_SAVE_BEFORE_PERFORMING_THIS_ACTION);
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return;
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}
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ISelection selection = derivateView.getViewer().getSelection();
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if(EditorUtil.getTreeNodeOfSelection(selection)!=null){
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event.doit = true;
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}
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else{
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event.doit = false;
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}
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}
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}
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