eu.etaxonomy.taxeditor.navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/WorkbenchUndoContextAdapterFactory.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
  10 package eu.etaxonomy.taxeditor.navigation;
  11
  12 import org.apache.log4j.Logger;
  13 import org.eclipse.core.commands.operations.IUndoContext;
  14 import org.eclipse.core.commands.operations.UndoContext;
  15 import org.eclipse.core.runtime.IAdapterFactory;
  16
  17
  18 /**
  19  * <p>WorkbenchUndoContextAdapterFactory class.</p>
  20  *
  21  * @author p.ciardelli
  22  * @created 04.06.2009
  23  * @version 1.0
  24  */
  25 public class WorkbenchUndoContextAdapterFactory implements IAdapterFactory {
  26         private static final Logger logger = Logger
  27                         .getLogger(WorkbenchUndoContextAdapterFactory.class);
  28         private UndoContext defaultUndoContext;
  29
  30         private static final Class[] ADAPTER_LIST = new Class[] { IUndoContext.class };
  31
  32         /* (non-Javadoc)
  33          * @see org.eclipse.core.runtime.IAdapterFactory#getAdapter(java.lang.Object, java.lang.Class)
  34          */
  35         /** {@inheritDoc} */
  36         public Object getAdapter(Object adaptableObject, Class adapterType) {
  37                 if (IUndoContext.class.equals(adapterType)) {
  38                         return NavigationUtil.getWorkbenchUndoContext();
  39                 }
  40                 return null;
  41         }
  42
  43         /**
  44          * @return
  45          */
  46         private Object getDefaultUndoContext() {
  47                 if (defaultUndoContext == null) {
  48                         defaultUndoContext = new UndoContext();
  49                 }
  50                 return defaultUndoContext;
  51         }
  52
  53         /* (non-Javadoc)
  54          * @see org.eclipse.core.runtime.IAdapterFactory#getAdapterList()
  55          */
  56         /**
  57          * <p>getAdapterList</p>
  58          *
  59          * @return an array of {@link java.lang.Class} objects.
  60          */
  61         public Class[] getAdapterList() {
  62                 return ADAPTER_LIST;
  63         }
  64 }