eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/dnd/CdmAuthorityTableDropTargetListener.java

   1 /**
   2 * Copyright (C) 2007 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.dnd;
  10
  11 import java.util.Iterator;
  12
  13 import org.eclipse.jface.util.LocalSelectionTransfer;
  14 import org.eclipse.jface.viewers.ISelection;
  15 import org.eclipse.jface.viewers.TreeSelection;
  16 import org.eclipse.swt.dnd.DropTargetEvent;
  17 import org.eclipse.swt.dnd.DropTargetListener;
  18
  19 import eu.etaxonomy.cdm.model.common.CdmBase;
  20 import eu.etaxonomy.taxeditor.ui.group.grantedauthority.CdmAuthorityComposite;
  21 import eu.etaxonomy.taxeditor.ui.group.grantedauthority.CdmAuthorityCompositeViewer;
  22
  23 /**
  24  * Drop listener for the {@link CdmAuthorityComposite}.
  25  *
  26  * @author cmathew
  27  * @created Mar 28, 2013
  28  *
  29  */
  30 public class CdmAuthorityTableDropTargetListener implements DropTargetListener {
  31
  32         private CdmAuthorityCompositeViewer viewer;
  33
  34
  35         public CdmAuthorityTableDropTargetListener(CdmAuthorityCompositeViewer viewer) {
  36                 this.viewer = viewer;
  37         }
  38
  39         @Override
  40         public void dragEnter(DropTargetEvent event) {
  41         }
  42
  43         @Override
  44         public void dragLeave(DropTargetEvent arg0) {
  45         }
  46
  47         @Override
  48         public void dragOperationChanged(DropTargetEvent arg0) {
  49         }
  50
  51         @Override
  52         public void dragOver(DropTargetEvent arg0) {
  53         }
  54
  55         @Override
  56         public void drop(DropTargetEvent dtevent) {
  57             ISelection selection = LocalSelectionTransfer.getTransfer().getSelection();
  58         if (selection instanceof TreeSelection) {
  59
  60             Iterator<?> selectionIterator = ((TreeSelection) selection).iterator();
  61
  62             while (selectionIterator.hasNext()){
  63                 Object next = selectionIterator.next();
  64                 if(CdmBase.class.isAssignableFrom(next.getClass()) ) {
  65                     viewer.addCdmAuthority((CdmBase)next);
  66                 }
  67             }
  68                 }
  69         }
  70
  71         @Override
  72         public void dropAccept(DropTargetEvent arg0) {
  73         }
  74
  75 }