KickJava   Java API By Example, From Geeks To Geeks.

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


1 /*******************************************************************************
2  * Copyright (c) 2000, 2006 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 package org.eclipse.jdt.internal.corext.refactoring.changes;
12
13 import org.eclipse.core.runtime.Assert;
14 import org.eclipse.core.runtime.CoreException;
15 import org.eclipse.core.runtime.IPath;
16 import org.eclipse.core.runtime.IProgressMonitor;
17 import org.eclipse.core.runtime.SubProgressMonitor;
18
19 import org.eclipse.core.resources.IResource;
20
21 import org.eclipse.ltk.core.refactoring.Change;
22 import org.eclipse.ltk.core.refactoring.RefactoringStatus;
23
24 import org.eclipse.jdt.core.IPackageFragmentRoot;
25
26 import org.eclipse.jdt.internal.corext.refactoring.AbstractJavaElementRenameChange;
27 import org.eclipse.jdt.internal.corext.refactoring.RefactoringCoreMessages;
28 import org.eclipse.jdt.internal.corext.util.Messages;
29
30 public final class RenameSourceFolderChange extends AbstractJavaElementRenameChange {
31
32     private static RefactoringStatus checkIfModifiable(IPackageFragmentRoot root, IProgressMonitor pm) throws CoreException {
33         RefactoringStatus result= new RefactoringStatus();
34         checkExistence(result, root);
35         if (result.hasFatalError())
36             return result;
37
38         if (root.isArchive()) {
39             result.addFatalError(Messages.format(RefactoringCoreMessages.RenameSourceFolderChange_rename_archive, root.getElementName()));
40             return result;
41         }
42
43         if (root.isExternal()) {
44             result.addFatalError(Messages.format(RefactoringCoreMessages.RenameSourceFolderChange_rename_external, root.getElementName()));
45             return result;
46         }
47
48         checkExistence(result, root.getCorrespondingResource());
49         if (result.hasFatalError())
50             return result;
51
52         if (root.getCorrespondingResource().isLinked()) {
53             result.addFatalError(Messages.format(RefactoringCoreMessages.RenameSourceFolderChange_rename_linked, root.getElementName()));
54             return result;
55         }
56
57         return result;
58     }
59
60     public RenameSourceFolderChange(IPackageFragmentRoot sourceFolder, String JavaDoc newName) {
61         this(sourceFolder.getPath(), sourceFolder.getElementName(), newName, IResource.NULL_STAMP);
62         Assert.isTrue(!sourceFolder.isReadOnly(), "should not be read only"); //$NON-NLS-1$
63 Assert.isTrue(!sourceFolder.isArchive(), "should not be an archive"); //$NON-NLS-1$
64 }
65
66     private RenameSourceFolderChange(IPath resourcePath, String JavaDoc oldName, String JavaDoc newName, long stampToRestore) {
67         super(resourcePath, oldName, newName);
68     }
69
70     protected IPath createNewPath() {
71         return getResourcePath().removeLastSegments(1).append(getNewName());
72     }
73
74     protected Change createUndoChange(long stampToRestore) {
75         return new RenameSourceFolderChange(createNewPath(), getNewName(), getOldName(), stampToRestore);
76     }
77
78     protected void doRename(IProgressMonitor pm) throws CoreException {
79         IPackageFragmentRoot sourceFolder= getSourceFolder();
80         if (sourceFolder != null)
81             sourceFolder.move(getNewPath(), getCoreMoveFlags(), getJavaModelUpdateFlags(), null, pm);
82     }
83
84     private int getCoreMoveFlags() {
85         if (getResource().isLinked())
86             return IResource.SHALLOW;
87         else
88             return IResource.NONE;
89     }
90
91     private int getJavaModelUpdateFlags() {
92         return IPackageFragmentRoot.DESTINATION_PROJECT_CLASSPATH | IPackageFragmentRoot.ORIGINATING_PROJECT_CLASSPATH | IPackageFragmentRoot.OTHER_REFERRING_PROJECTS_CLASSPATH | IPackageFragmentRoot.REPLACE;
93     }
94
95     public String JavaDoc getName() {
96         return Messages.format(RefactoringCoreMessages.RenameSourceFolderChange_rename, new String JavaDoc[] { getOldName(), getNewName()});
97     }
98
99     private IPath getNewPath() {
100         return getResource().getFullPath().removeLastSegments(1).append(getNewName());
101     }
102
103     private IPackageFragmentRoot getSourceFolder() {
104         return (IPackageFragmentRoot) getModifiedElement();
105     }
106
107     public RefactoringStatus isValid(IProgressMonitor pm) throws CoreException {
108         RefactoringStatus result= new RefactoringStatus();
109         pm.beginTask("", 2); //$NON-NLS-1$
110 result.merge(isValid(new SubProgressMonitor(pm, 1), DIRTY));
111         if (result.hasFatalError())
112             return result;
113         IPackageFragmentRoot sourceFolder= getSourceFolder();
114         result.merge(checkIfModifiable(sourceFolder, new SubProgressMonitor(pm, 1)));
115
116         return result;
117     }
118 }
119
Popular Tags