eu.etaxonomy.taxeditor.navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/WorkbenchUndoContextAdapterFactory.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2007 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
  11 package eu.etaxonomy.taxeditor.navigation;
  12
  13 import org.apache.log4j.Logger;
  14 import org.eclipse.core.commands.operations.IUndoContext;
  15 import org.eclipse.core.commands.operations.UndoContext;
  16 import org.eclipse.core.runtime.IAdapterFactory;
  17
  18
  19 /**
  20  * <p>WorkbenchUndoContextAdapterFactory class.</p>
  21  *
  22  * @author p.ciardelli
  23  * @created 04.06.2009
  24  * @version 1.0
  25  */
  26 public class WorkbenchUndoContextAdapterFactory implements IAdapterFactory {
  27         private static final Logger logger = Logger
  28                         .getLogger(WorkbenchUndoContextAdapterFactory.class);
  29         private UndoContext defaultUndoContext;
  30
  31         private static final Class[] ADAPTER_LIST = new Class[] { IUndoContext.class };
  32
  33         /* (non-Javadoc)
  34          * @see org.eclipse.core.runtime.IAdapterFactory#getAdapter(java.lang.Object, java.lang.Class)
  35          */
  36         /** {@inheritDoc} */
  37         public Object getAdapter(Object adaptableObject, Class adapterType) {
  38                 if (IUndoContext.class.equals(adapterType)) {
  39                         return NavigationUtil.getWorkbenchUndoContext();
  40                 }
  41                 return null;
  42         }
  43
  44         /**
  45          * @return
  46          */
  47         private Object getDefaultUndoContext() {
  48                 if (defaultUndoContext == null) {
  49                         defaultUndoContext = new UndoContext();
  50                 }
  51                 return defaultUndoContext;
  52         }
  53
  54         /* (non-Javadoc)
  55          * @see org.eclipse.core.runtime.IAdapterFactory#getAdapterList()
  56          */
  57         /**
  58          * <p>getAdapterList</p>
  59          *
  60          * @return an array of {@link java.lang.Class} objects.
  61          */
  62         public Class[] getAdapterList() {
  63                 return ADAPTER_LIST;
  64         }
  65 }