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Java > Open Source Codes > org > eclipse > jdt > internal > corext > refactoring > changes > UndoablePackageDeleteChange


1 /*******************************************************************************
2  * Copyright (c) 2006, 2007 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/

11
12 package org.eclipse.jdt.internal.corext.refactoring.changes;
13
14 import java.util.List JavaDoc;
15
16 import org.eclipse.core.runtime.CoreException;
17 import org.eclipse.core.runtime.IProgressMonitor;
18 import org.eclipse.core.runtime.SubProgressMonitor;
19
20 import org.eclipse.core.resources.IResource;
21
22 import org.eclipse.ui.ide.undo.ResourceDescription;
23
24 import org.eclipse.ltk.core.refactoring.Change;
25
26 public class UndoablePackageDeleteChange extends DynamicValidationStateChange {
27
28     private final List JavaDoc/*<IResource>*/ fPackageDeletes;
29
30     public UndoablePackageDeleteChange(String JavaDoc name, List JavaDoc/*<IResource>*/ packageDeletes) {
31         super(name);
32         fPackageDeletes= packageDeletes;
33     }
34     
35     public Change perform(IProgressMonitor pm) throws CoreException {
36         int count= fPackageDeletes.size();
37         pm.beginTask("", count * 3); //$NON-NLS-1$
38
ResourceDescription[] packageDeleteDescriptions= new ResourceDescription[fPackageDeletes.size()];
39         for (int i= 0; i < fPackageDeletes.size(); i++) {
40             IResource resource= (IResource) fPackageDeletes.get(i);
41             packageDeleteDescriptions[i]= ResourceDescription.fromResource(resource);
42             pm.worked(1);
43         }
44         
45         DynamicValidationStateChange result= (DynamicValidationStateChange) super.perform(new SubProgressMonitor(pm, count));
46         
47         for (int i= 0; i < fPackageDeletes.size(); i++) {
48             IResource resource= (IResource) fPackageDeletes.get(i);
49             ResourceDescription resourceDescription= packageDeleteDescriptions[i];
50             resourceDescription.recordStateFromHistory(resource, new SubProgressMonitor(pm, 1));
51             result.add(new UndoDeleteResourceChange(resourceDescription));
52         }
53         return result;
54     }
55 }
56
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