eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/editor/definedterm/DefinedTermDragListener.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2009 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10 package eu.etaxonomy.taxeditor.editor.definedterm;
  11
  12 import java.util.ArrayList;
  13 import java.util.List;
  14
  15 import org.eclipse.jface.viewers.IStructuredSelection;
  16 import org.eclipse.jface.viewers.Viewer;
  17 import org.eclipse.swt.dnd.DragSourceAdapter;
  18 import org.eclipse.swt.dnd.DragSourceEvent;
  19
  20 import eu.etaxonomy.cdm.model.common.DefinedTermBase;
  21
  22 /**
  23  * @author l.morris
  24  * @date 10 Jan 2012
  25  *
  26  */
  27 public class DefinedTermDragListener extends DragSourceAdapter {
  28
  29         private Viewer viewer;
  30
  31         /**
  32          *
  33          */
  34         public DefinedTermDragListener(Viewer viewer) {
  35                 this.viewer = viewer;
  36         }
  37
  38         /* (non-Javadoc)
  39          * @see org.eclipse.swt.dnd.DragSourceAdapter#dragStart(org.eclipse.swt.dnd.DragSourceEvent)
  40          */
  41         @Override
  42         public void dragStart(DragSourceEvent event) {
  43
  44                 event.doit = true;// set to false if needed - default is true
  45         }
  46
  47         /* (non-Javadoc)
  48          * @see org.eclipse.swt.dnd.DragSourceAdapter#dragFinished(org.eclipse.swt.dnd.DragSourceEvent)
  49          */
  50         @Override
  51         public void dragFinished(DragSourceEvent event) {
  52                 // TODO Auto-generated method stub
  53                 super.dragFinished(event);
  54         }
  55
  56         /* (non-Javadoc)
  57          * @see org.eclipse.swt.dnd.DragSourceAdapter#dragSetData(org.eclipse.swt.dnd.DragSourceEvent)
  58          */
  59         @Override
  60         public void dragSetData(DragSourceEvent event) {
  61
  62                 IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
  63                 List<DefinedTermBase> definedTerms = new ArrayList<DefinedTermBase>();
  64
  65                 for (Object object : selection.toList()){
  66                                 definedTerms.add((DefinedTermBase)object);
  67                         }
  68
  69                 if (TermTransfer.getInstance().isSupportedType(
  70                                 event.dataType)) {
  71                         event.data = definedTerms.toArray(new DefinedTermBase[definedTerms.size()]);
  72                 }
  73         }
  74
  75
  76
  77 }