eclipseprojects/eu.etaxonomy.taxeditor/src/eu/etaxonomy/taxeditor/actions/UndoableAction.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.actions;
  11
  12 import org.apache.log4j.Logger;
  13 import org.eclipse.core.commands.ExecutionException;
  14 import org.eclipse.core.commands.operations.AbstractOperation;
  15 import org.eclipse.core.commands.operations.IOperationHistory;
  16 import org.eclipse.core.commands.operations.IUndoContext;
  17 import org.eclipse.core.commands.operations.IUndoableOperation;
  18 import org.eclipse.core.runtime.IAdaptable;
  19 import org.eclipse.core.runtime.IProgressMonitor;
  20 import org.eclipse.core.runtime.IStatus;
  21 import org.eclipse.jface.action.Action;
  22 import org.eclipse.jface.resource.ImageDescriptor;
  23
  24 import eu.etaxonomy.taxeditor.UiUtil;
  25
  26 /**
  27  * @author p.ciardelli
  28  * @created 09.06.2008
  29  * @version 1.0
  30  */
  31 public abstract class UndoableAction extends Action {
  32         private static final Logger logger = Logger.getLogger(UndoableAction.class);
  33
  34         protected IUndoableOperation operation;
  35         private String text;
  36
  37         protected UndoableAction(String text, ImageDescriptor image) {
  38                 super(text);
  39                 setImageDescriptor(image);
  40                 this.text = text;
  41
  42                 operation = new UndoableOperation();
  43         }
  44
  45
  46         public void run() {
  47                 IOperationHistory operationHistory = UiUtil.getOperationHistory();
  48                 IUndoContext undoContext = UiUtil.getWorkbenchUndoContext();
  49                 operation.addContext(undoContext);
  50                 try {
  51                         operationHistory.execute(operation, null, null);
  52                         operationHistory.add(operation);
  53                 } catch (ExecutionException e) {
  54                         e.printStackTrace();
  55                 }
  56         }
  57
  58         protected abstract IStatus executeOperation();
  59         protected abstract IStatus redoOperation();
  60         protected abstract IStatus undoOperation();
  61
  62         class UndoableOperation extends AbstractOperation {
  63
  64                 public UndoableOperation() {
  65                         super("'" + text + "'");
  66                 }
  67
  68                 @Override
  69                 public IStatus execute(IProgressMonitor monitor, IAdaptable info)
  70                                 throws ExecutionException {
  71                         return executeOperation();
  72                 }
  73
  74                 @Override
  75                 public IStatus redo(IProgressMonitor monitor, IAdaptable info)
  76                                 throws ExecutionException {
  77                         return redoOperation();
  78                 }
  79
  80                 @Override
  81                 public IStatus undo(IProgressMonitor monitor, IAdaptable info)
  82                                 throws ExecutionException {
  83                         return undoOperation();
  84                 }
  85         }
  86
  87 }