eu.etaxonomy.taxeditor.navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/navigator/e4/TreeNodeDragListenerE4.java

   1 /**
   2  * Copyright (C) 2015 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.navigation.navigator.e4;
  10
  11 import org.eclipse.jface.util.LocalSelectionTransfer;
  12 import org.eclipse.jface.viewers.ISelection;
  13 import org.eclipse.jface.viewers.Viewer;
  14 import org.eclipse.swt.dnd.DragSourceAdapter;
  15 import org.eclipse.swt.dnd.DragSourceEvent;
  16
  17 /**
  18  * @author k.luther
  19  * @date 02.06.2015
  20  *
  21  */
  22 public class TreeNodeDragListenerE4 extends DragSourceAdapter {
  23     private Viewer viewer;
  24
  25     public TreeNodeDragListenerE4(Viewer viewer) {
  26         this.viewer = viewer;
  27     }
  28
  29     public void setViewer(Viewer viewer){
  30         this.viewer = viewer;
  31     }
  32
  33     @Override
  34     public void dragStart(DragSourceEvent event) {
  35         event.doit = true;// set to false if needed - default is true
  36         dragSetData(event);
  37     }
  38
  39     @Override
  40     public void dragSetData(DragSourceEvent event) {
  41         ISelection selection = viewer.getSelection();
  42         LocalSelectionTransfer.getTransfer().setSelection(selection);
  43     }
  44 }