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

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