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/**
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* Copyright (C) 2009 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.definedterm;
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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.jface.viewers.Viewer;
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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.model.common.DefinedTermBase;
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/**
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* @author l.morris
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* @date 10 Jan 2012
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*
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*/
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public class DefinedTermDragListener extends DragSourceAdapter {
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private Viewer viewer;
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public DefinedTermDragListener(Viewer viewer) {
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this.viewer = viewer;
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}
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@Override
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public void dragStart(DragSourceEvent event) {
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IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
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List list = selection.toList();
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for (Object object : list) {
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if(!(object instanceof DefinedTermBase)){
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event.doit = false;
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return;
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}
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}
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event.doit = true;
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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) viewer.getSelection();
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List<DefinedTermBase> definedTerms = new ArrayList<DefinedTermBase>();
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for (Object object : selection.toList()){
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definedTerms.add((DefinedTermBase)object);
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}
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if (TermTransfer.getInstance().isSupportedType(
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event.dataType)) {
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event.data = definedTerms.toArray(new DefinedTermBase[definedTerms.size()]);
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}
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}
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}
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