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   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.core;
  12
  13 import java.io.ByteArrayInputStream;
  14 import java.io.IOException;
  15 import java.util.ArrayList;
  16 import java.util.Enumeration;
  17 import java.util.HashMap;
  18 import java.util.Iterator;
  19 import java.util.Map;
  20
  21 import net.sourceforge.phpdt.core.IBuffer;
  22 import net.sourceforge.phpdt.core.ICompilationUnit;
  23 import net.sourceforge.phpdt.core.IJavaElement;
  24 import net.sourceforge.phpdt.core.IJavaElementDelta;
  25 import net.sourceforge.phpdt.core.IJavaModelStatus;
  26 import net.sourceforge.phpdt.core.IJavaModelStatusConstants;
  27 import net.sourceforge.phpdt.core.IJavaProject;
  28 import net.sourceforge.phpdt.core.IPackageFragment;
  29 import net.sourceforge.phpdt.core.IPackageFragmentRoot;
  30 import net.sourceforge.phpdt.core.IType;
  31 import net.sourceforge.phpdt.core.JavaModelException;
  32 import net.sourceforge.phpdt.core.JavaCore;
  33 import net.sourceforge.phpdt.core.jdom.DOMException;
  34 import net.sourceforge.phpdt.core.jdom.DOMFactory;
  35 import net.sourceforge.phpdt.core.jdom.IDOMCompilationUnit;
  36 import net.sourceforge.phpdt.core.jdom.IDOMNode;
  37 import net.sourceforge.phpdt.core.jdom.IDOMPackage;
  38
  39 import org.eclipse.core.resources.IContainer;
  40 import org.eclipse.core.resources.IFile;
  41 import org.eclipse.core.resources.IFolder;
  42 import org.eclipse.core.resources.IResource;
  43 import org.eclipse.core.resources.ResourcesPlugin;
  44 import org.eclipse.core.runtime.CoreException;
  45 import org.eclipse.core.runtime.IPath;
  46 import org.eclipse.core.runtime.Path;
  47
  48 /**
  49  * This operation copies/moves/renames a collection of resources from their current
  50  * container to a new container, optionally renaming the
  51  * elements.
  52  * <p>Notes:<ul>
  53  *    <li>If there is already an resource with the same name in
  54  *    the new container, the operation either overwrites or aborts,
  55  *    depending on the collision policy setting. The default setting is
  56  *        abort.
  57  *
  58  *    <li>When a compilation unit is copied to a new package, the
  59  *    package declaration in the compilation unit is automatically updated.
  60  *
  61  *    <li>The collection of elements being copied must all share the
  62  *    same type of container.
  63  *
  64  *    <li>This operation can be used to copy and rename elements within
  65  *    the same container.
  66  *
  67  *    <li>This operation only copies compilation units and package fragments.
  68  *    It does not copy package fragment roots - a platform operation must be used for that.
  69  * </ul>
  70  *
  71  */
  72 public class CopyResourceElementsOperation extends MultiOperation {
  73         /**
  74          * A collection of renamed compilation units.  These cus do
  75          * not need to be saved as they no longer exist.
  76          */
  77         protected ArrayList fRenamedCompilationUnits = null;
  78         /**
  79          * Table specifying deltas for elements being
  80          * copied/moved/renamed. Keyed by elements' project(s), and
  81          * values are the corresponding deltas.
  82          */
  83         protected Map fDeltasPerProject= new HashMap(1);
  84         /**
  85          * The <code>DOMFactory</code> used to manipulate the source code of
  86          * <code>ICompilationUnit</code>.
  87          */
  88         protected DOMFactory fFactory;
  89         /**
  90          * The list of new resources created during this operation.
  91          */
  92         protected ArrayList fCreatedElements;
  93         /**
  94          * When executed, this operation will copy the given resources to the
  95          * given containers.  The resources and destination containers must be in
  96          * the correct order. If there is > 1 destination, the number of destinations
  97          * must be the same as the number of resources being copied/moved.
  98          */
  99         public CopyResourceElementsOperation(IJavaElement[] resourcesToCopy, IJavaElement[] destContainers, boolean force) {
 100                 super(resourcesToCopy, destContainers, force);
 101                 fFactory = new DOMFactory();
 102         }
 103         /**
 104          * When executed, this operation will copy the given resources to the
 105          * given container.
 106          */
 107         public CopyResourceElementsOperation(IJavaElement[] resourcesToCopy, IJavaElement destContainer, boolean force) {
 108                 this(resourcesToCopy, new IJavaElement[]{destContainer}, force);
 109         }
 110         /**
 111          * Returns the children of <code>source</code> which are affected by this operation.
 112          * If <code>source</code> is a <code>K_SOURCE</code>, these are the <code>.java</code>
 113          * files, if it is a <code>K_BINARY</code>, they are the <code>.class</code> files.
 114          */
 115         private IResource[] collectResourcesOfInterest(IPackageFragment source) throws JavaModelException {
 116                 IJavaElement[] children = source.getChildren();
 117                 int childOfInterest = IJavaElement.COMPILATION_UNIT;
 118 //              if (source.getKind() == IPackageFragmentRoot.K_BINARY) {
 119 //                      childOfInterest = IJavaElement.CLASS_FILE;
 120 //              }
 121                 ArrayList correctKindChildren = new ArrayList(children.length);
 122                 for (int i = 0; i < children.length; i++) {
 123                         IJavaElement child = children[i];
 124                         if (child.getElementType() == childOfInterest) {
 125                                 correctKindChildren.add(child.getResource());
 126                         }
 127                 }
 128                 // Gather non-java resources
 129 //              Object[] nonJavaResources = source.getNonJavaResources();
 130 //              int actualNonJavaResourceCount = 0;
 131 //              for (int i = 0, max = nonJavaResources.length; i < max; i++){
 132 //                      if (nonJavaResources[i] instanceof IResource) actualNonJavaResourceCount++;
 133 //              }
 134 //              IResource[] actualNonJavaResources = new IResource[actualNonJavaResourceCount];
 135 //              for (int i = 0, max = nonJavaResources.length, index = 0; i < max; i++){
 136 //                      if (nonJavaResources[i] instanceof IResource) actualNonJavaResources[index++] = (IResource)nonJavaResources[i];
 137 //              }
 138
 139 //              if (actualNonJavaResourceCount != 0) {
 140 //                      int correctKindChildrenSize = correctKindChildren.size();
 141 //                      IResource[] result = new IResource[correctKindChildrenSize + actualNonJavaResourceCount];
 142 //                      correctKindChildren.toArray(result);
 143 //                      System.arraycopy(actualNonJavaResources, 0, result, correctKindChildrenSize, actualNonJavaResourceCount);
 144 //                      return result;
 145 //              } else {
 146                         IResource[] result = new IResource[correctKindChildren.size()];
 147                         correctKindChildren.toArray(result);
 148                         return result;
 149 //              }
 150         }
 151         /**
 152          * Creates any destination package fragment(s) which do not exists yet.
 153          */
 154         private void createNeededPackageFragments(IContainer sourceFolder, IPackageFragmentRoot root, String newFragName, boolean moveFolder) throws JavaModelException {
 155                 IContainer parentFolder = (IContainer) root.getResource();
 156                 JavaElementDelta projectDelta = null;
 157                 String[] names = net.sourceforge.phpdt.internal.core.Util.getTrimmedSimpleNames(newFragName);
 158                 StringBuffer sideEffectPackageName = new StringBuffer();
 159                 char[][] exclusionsPatterns = ((PackageFragmentRoot)root).fullExclusionPatternChars();
 160                 for (int i = 0; i < names.length; i++) {
 161                         String subFolderName = names[i];
 162                         sideEffectPackageName.append(subFolderName);
 163                         IResource subFolder = parentFolder.findMember(subFolderName);
 164                         if (subFolder == null) {
 165                                 // create deepest folder only if not a move (folder will be moved in processPackageFragmentResource)
 166                                 if (!(moveFolder && i == names.length-1)) {
 167                                         createFolder(parentFolder, subFolderName, fForce);
 168                                 }
 169                                 parentFolder = parentFolder.getFolder(new Path(subFolderName));
 170                                 sourceFolder = sourceFolder.getFolder(new Path(subFolderName));
 171                                 if (sourceFolder.isReadOnly()) {
 172                                         parentFolder.setReadOnly(true);
 173                                 }
 174                                 IPackageFragment sideEffectPackage = root.getPackageFragment(sideEffectPackageName.toString());
 175                                 if (i < names.length - 1 // all but the last one are side effect packages
 176                                                 && !net.sourceforge.phpdt.internal.core.Util.isExcluded(parentFolder, exclusionsPatterns)) {
 177                                         if (projectDelta == null) {
 178                                                 projectDelta = getDeltaFor(root.getJavaProject());
 179                                         }
 180                                         projectDelta.added(sideEffectPackage);
 181                                 }
 182                                 fCreatedElements.add(sideEffectPackage);
 183                         } else {
 184                                 parentFolder = (IContainer) subFolder;
 185                         }
 186                         sideEffectPackageName.append('.');
 187                 }
 188         }
 189         /**
 190          * Returns the <code>JavaElementDelta</code> for <code>javaProject</code>,
 191          * creating it and putting it in <code>fDeltasPerProject</code> if
 192          * it does not exist yet.
 193          */
 194         private JavaElementDelta getDeltaFor(IJavaProject javaProject) {
 195                 JavaElementDelta delta = (JavaElementDelta) fDeltasPerProject.get(javaProject);
 196                 if (delta == null) {
 197                         delta = new JavaElementDelta(javaProject);
 198                         fDeltasPerProject.put(javaProject, delta);
 199                 }
 200                 return delta;
 201         }
 202         /**
 203          * @see MultiOperation
 204          */
 205         protected String getMainTaskName() {
 206                 return net.sourceforge.phpdt.internal.core.Util.bind("operation.copyResourceProgress"); //$NON-NLS-1$
 207         }
 208         /**
 209          * Sets the deltas to register the changes resulting from this operation
 210          * for this source element and its destination.
 211          * If the operation is a cross project operation<ul>
 212          * <li>On a copy, the delta should be rooted in the dest project
 213          * <li>On a move, two deltas are generated<ul>
 214          *                      <li>one rooted in the source project
 215          *                      <li>one rooted in the destination project</ul></ul>
 216          * If the operation is rooted in a single project, the delta is rooted in that project
 217          *
 218          */
 219         protected void prepareDeltas(IJavaElement sourceElement, IJavaElement destinationElement, boolean isMove) {
 220                 if (net.sourceforge.phpdt.internal.core.Util.isExcluded(sourceElement) || net.sourceforge.phpdt.internal.core.Util.isExcluded(destinationElement)) return;
 221                 IJavaProject destProject = destinationElement.getJavaProject();
 222                 if (isMove) {
 223                         IJavaProject sourceProject = sourceElement.getJavaProject();
 224                         getDeltaFor(sourceProject).movedFrom(sourceElement, destinationElement);
 225                         getDeltaFor(destProject).movedTo(destinationElement, sourceElement);
 226                 } else {
 227                         getDeltaFor(destProject).added(destinationElement);
 228                 }
 229         }
 230         /**
 231          * Copies/moves a compilation unit with the name <code>newCUName</code>
 232          * to the destination package.<br>
 233          * The package statement in the compilation unit is updated if necessary.
 234          * The main type of the compilation unit is renamed if necessary.
 235          *
 236          * @exception JavaModelException if the operation is unable to
 237          * complete
 238          */
 239         private void processCompilationUnitResource(ICompilationUnit source, IPackageFragment dest) throws JavaModelException {
 240                 String newCUName = getNewNameFor(source);
 241                 String destName = (newCUName != null) ? newCUName : source.getElementName();
 242                 String newContent = updatedContent(source, dest, newCUName); // null if unchanged
 243
 244                 // copy resource
 245                 IFile sourceResource = (IFile)(source.isWorkingCopy() ? source.getOriginalElement() : source).getResource();
 246                 IContainer destFolder = (IContainer)dest.getResource(); // can be an IFolder or an IProject
 247                 IFile destFile = destFolder.getFile(new Path(destName));
 248                 if (!destFile.equals(sourceResource)) {
 249                         try {
 250                                 if (destFile.exists()) {
 251                                         if (fForce) {
 252                                                 // we can remove it
 253                                                 deleteResource(destFile, IResource.KEEP_HISTORY);
 254                                         } else {
 255                                                 // abort
 256                                                 throw new JavaModelException(new JavaModelStatus(
 257                                                         IJavaModelStatusConstants.NAME_COLLISION,
 258                                                         Util.bind("status.nameCollision", destFile.getFullPath().toString()))); //$NON-NLS-1$
 259                                         }
 260                                 }
 261                                 int flags = fForce ? IResource.FORCE : IResource.NONE;
 262                                 if (this.isMove()) {
 263                                         flags |= IResource.KEEP_HISTORY;
 264                                         sourceResource.move(destFile.getFullPath(), flags, getSubProgressMonitor(1));
 265                                 } else {
 266                                         if (newContent != null) flags |= IResource.KEEP_HISTORY;
 267                                         sourceResource.copy(destFile.getFullPath(), flags, getSubProgressMonitor(1));
 268                                 }
 269                                 this.setAttribute(HAS_MODIFIED_RESOURCE_ATTR, TRUE);
 270                         } catch (JavaModelException e) {
 271                                 throw e;
 272                         } catch (CoreException e) {
 273                                 throw new JavaModelException(e);
 274                         }
 275
 276                         // update new resource content
 277                         try {
 278                                 if (newContent != null){
 279                                         String encoding = source.getJavaProject().getOption(JavaCore.CORE_ENCODING, true);
 280                                         destFile.setContents(
 281                                                 new ByteArrayInputStream(encoding == null ? newContent.getBytes() : newContent.getBytes(encoding)),
 282                                                 fForce ? IResource.FORCE | IResource.KEEP_HISTORY : IResource.KEEP_HISTORY,
 283                                                 getSubProgressMonitor(1));
 284                                 }
 285                         } catch(IOException e) {
 286                                 throw new JavaModelException(e, IJavaModelStatusConstants.IO_EXCEPTION);
 287                         } catch (CoreException e) {
 288                                 throw new JavaModelException(e);
 289                         }
 290
 291                         // register the correct change deltas
 292                         ICompilationUnit destCU = dest.getCompilationUnit(destName);
 293                         prepareDeltas(source, destCU, isMove());
 294                         if (newCUName != null) {
 295                                 //the main type has been renamed
 296                                 String oldName = source.getElementName();
 297                                 oldName = oldName.substring(0, oldName.length() - 5);
 298                                 String newName = newCUName;
 299                                 newName = newName.substring(0, newName.length() - 5);
 300                                 prepareDeltas(source.getType(oldName), destCU.getType(newName), isMove());
 301                         }
 302                 } else {
 303                         if (!fForce) {
 304                                 throw new JavaModelException(new JavaModelStatus(
 305                                         IJavaModelStatusConstants.NAME_COLLISION,
 306                                         Util.bind("status.nameCollision", destFile.getFullPath().toString()))); //$NON-NLS-1$
 307                         }
 308                         // update new resource content
 309                         // in case we do a saveas on the same resource we have to simply update the contents
 310                         // see http://dev.eclipse.org/bugs/show_bug.cgi?id=9351
 311                         try {
 312                                 if (newContent != null){
 313                                         String encoding = source.getJavaProject().getOption(JavaCore.CORE_ENCODING, true);
 314                                         destFile.setContents(
 315                                                 new ByteArrayInputStream(encoding == null ? newContent.getBytes() : newContent.getBytes(encoding)),
 316                                                 fForce ? IResource.FORCE | IResource.KEEP_HISTORY : IResource.KEEP_HISTORY,
 317                                                 getSubProgressMonitor(1));
 318                                 }
 319                         } catch(IOException e) {
 320                                 throw new JavaModelException(e, IJavaModelStatusConstants.IO_EXCEPTION);
 321                         } catch (CoreException e) {
 322                                 throw new JavaModelException(e);
 323                         }
 324                 }
 325         }
 326         /**
 327          * Process all of the changed deltas generated by this operation.
 328          */
 329         protected void processDeltas() {
 330                 for (Iterator deltas = this.fDeltasPerProject.values().iterator(); deltas.hasNext();){
 331                         addDelta((IJavaElementDelta) deltas.next());
 332                 }
 333         }
 334         /**
 335          * @see MultiOperation
 336          * This method delegates to <code>processCompilationUnitResource</code> or
 337          * <code>processPackageFragmentResource</code>, depending on the type of
 338          * <code>element</code>.
 339          */
 340         protected void processElement(IJavaElement element) throws JavaModelException {
 341                 IJavaElement dest = getDestinationParent(element);
 342                 switch (element.getElementType()) {
 343                         case IJavaElement.COMPILATION_UNIT :
 344                                 processCompilationUnitResource((ICompilationUnit) element, (IPackageFragment) dest);
 345                                 fCreatedElements.add(((IPackageFragment) dest).getCompilationUnit(element.getElementName()));
 346                                 break;
 347                         case IJavaElement.PACKAGE_FRAGMENT :
 348                                 processPackageFragmentResource((IPackageFragment) element, (IPackageFragmentRoot) dest, getNewNameFor(element));
 349                                 break;
 350                         default :
 351                                 throw new JavaModelException(new JavaModelStatus(IJavaModelStatusConstants.INVALID_ELEMENT_TYPES, element));
 352                 }
 353         }
 354         /**
 355          * @see MultiOperation
 356          * Overridden to allow special processing of <code>JavaElementDelta</code>s
 357          * and <code>fResultElements</code>.
 358          */
 359         protected void processElements() throws JavaModelException {
 360                 fCreatedElements = new ArrayList(fElementsToProcess.length);
 361                 try {
 362                         super.processElements();
 363                 } catch (JavaModelException jme) {
 364                         throw jme;
 365                 } finally {
 366                         fResultElements = new IJavaElement[fCreatedElements.size()];
 367                         fCreatedElements.toArray(fResultElements);
 368                         processDeltas();
 369                 }
 370         }
 371         /**
 372          * Copies/moves a package fragment with the name <code>newName</code>
 373          * to the destination package.<br>
 374          *
 375          * @exception JavaModelException if the operation is unable to
 376          * complete
 377          */
 378         private void processPackageFragmentResource(IPackageFragment source, IPackageFragmentRoot root, String newName) throws JavaModelException {
 379                 try {
 380                         String newFragName = (newName == null) ? source.getElementName() : newName;
 381                         IPackageFragment newFrag = root.getPackageFragment(newFragName);
 382                         IResource[] resources = collectResourcesOfInterest(source);
 383
 384                         // if isMove() can we move the folder itself ? (see http://bugs.eclipse.org/bugs/show_bug.cgi?id=22458)
 385                         boolean shouldMoveFolder = isMove() && !newFrag.getResource().exists(); // if new pkg fragment exists, it is an override
 386                         IFolder srcFolder = (IFolder)source.getResource();
 387                         IPath destPath = newFrag.getPath();
 388                         if (shouldMoveFolder) {
 389                                 // check if destination is not included in source
 390                                 if (srcFolder.getFullPath().isPrefixOf(destPath)) {
 391                                         shouldMoveFolder = false;
 392                                 } else {
 393                                         // check if there are no sub-packages
 394                                         IResource[] members = srcFolder.members();
 395                                         for (int i = 0; i < members.length; i++) {
 396                                                 if ( members[i] instanceof IFolder) {
 397                                                         shouldMoveFolder = false;
 398                                                         break;
 399                                                 }
 400                                         }
 401                                 }
 402                         }
 403                         createNeededPackageFragments((IContainer) source.getParent().getResource(), root, newFragName, shouldMoveFolder);
 404
 405                         // Process resources
 406                         if (shouldMoveFolder) {
 407                                 // move underlying resource
 408                                 srcFolder.move(destPath, fForce, true /* keep history */, getSubProgressMonitor(1));
 409                                 this.setAttribute(HAS_MODIFIED_RESOURCE_ATTR, TRUE);
 410                         } else {
 411                                 // process the leaf resources
 412                                 if (resources.length > 0) {
 413                                         if (isRename()) {
 414                                                 if (! destPath.equals(source.getPath())) {
 415                                                         moveResources(resources, destPath);
 416                                                 }
 417                                         } else if (isMove()) {
 418                                                 // we need to delete this resource if this operation wants to override existing resources
 419                                                 for (int i = 0, max = resources.length; i < max; i++) {
 420                                                         IResource destinationResource = ResourcesPlugin.getWorkspace().getRoot().findMember(destPath.append(resources[i].getName()));
 421                                                         if (destinationResource != null) {
 422                                                                 if (fForce) {
 423                                                                         deleteResource(destinationResource, IResource.KEEP_HISTORY);
 424                                                                 } else {
 425                                                                         throw new JavaModelException(new JavaModelStatus(
 426                                                                                 IJavaModelStatusConstants.NAME_COLLISION,
 427                                                                                 Util.bind("status.nameCollision", destinationResource.getFullPath().toString()))); //$NON-NLS-1$
 428                                                                 }
 429                                                         }
 430                                                 }
 431                                                 moveResources(resources, destPath);
 432                                         } else {
 433                                                 // we need to delete this resource if this operation wants to override existing resources
 434                                                 for (int i = 0, max = resources.length; i < max; i++) {
 435                                                         IResource destinationResource = ResourcesPlugin.getWorkspace().getRoot().findMember(destPath.append(resources[i].getName()));
 436                                                         if (destinationResource != null) {
 437                                                                 if (fForce) {
 438                                                                         // we need to delete this resource if this operation wants to override existing resources
 439                                                                         deleteResource(destinationResource, IResource.KEEP_HISTORY);
 440                                                                 } else {
 441                                                                         throw new JavaModelException(new JavaModelStatus(
 442                                                                                 IJavaModelStatusConstants.NAME_COLLISION,
 443                                                                                 Util.bind("status.nameCollision", destinationResource.getFullPath().toString()))); //$NON-NLS-1$
 444                                                                 }
 445                                                         }
 446                                                 }
 447                                                 copyResources(resources, destPath);
 448                                         }
 449                                 }
 450                         }
 451
 452                         // Discard empty old package (if still empty after the rename)
 453                         boolean isEmpty = true;
 454                         if (isMove()) {
 455                                 // delete remaining files in this package (.class file in the case where Proj=src=bin)
 456                                 if (srcFolder.exists()) {
 457                                         IResource[] remaingFiles = srcFolder.members();
 458                                         for (int i = 0, length = remaingFiles.length; i < length; i++) {
 459                                                 IResource file = remaingFiles[i];
 460                                                 if (file instanceof IFile) {
 461                                                         this.deleteResource(file, IResource.FORCE | IResource.KEEP_HISTORY);
 462                                                 } else {
 463                                                         isEmpty = false;
 464                                                 }
 465                                         }
 466                                 }
 467                                 if (isEmpty) {
 468                                         IResource rootResource;
 469                                         // check if source is included in destination
 470                                         if (destPath.isPrefixOf(srcFolder.getFullPath())) {
 471                                                 rootResource = newFrag.getResource();
 472                                         } else {
 473                                                 rootResource =  source.getParent().getResource();
 474                                         }
 475
 476                                         // delete recursively empty folders
 477                                         deleteEmptyPackageFragment(source, false, rootResource);
 478                                 }
 479                         }
 480
 481                         // Update package statement in compilation unit if needed
 482                         if (!newFrag.getElementName().equals(source.getElementName())) { // if package has been renamed, update the compilation units
 483                                 for (int i = 0; i < resources.length; i++) {
 484                                         if (resources[i].getName().endsWith(".java")) { //$NON-NLS-1$
 485                                                 // we only consider potential compilation units
 486                                                 ICompilationUnit cu = newFrag.getCompilationUnit(resources[i].getName());
 487                                                 IDOMCompilationUnit domCU = fFactory.createCompilationUnit(cu.getSource(), cu.getElementName());
 488                                                 if (domCU != null) {
 489                                                         updatePackageStatement(domCU, newFragName);
 490                                                         IBuffer buffer = cu.getBuffer();
 491                                                         if (buffer == null) continue;
 492                                                         String bufferContents = buffer.getContents();
 493                                                         if (bufferContents == null) continue;
 494                                                         String domCUContents = domCU.getContents();
 495                                                         String cuContents = null;
 496                                                         if (domCUContents != null) {
 497                                                                 cuContents = net.sourceforge.phpdt.internal.core.Util.normalizeCRs(domCU.getContents(), bufferContents);
 498                                                         } else {
 499                                                                 // See PR http://dev.eclipse.org/bugs/show_bug.cgi?id=11285
 500                                                                 cuContents = bufferContents;//$NON-NLS-1$
 501                                                         }
 502                                                         buffer.setContents(cuContents);
 503                                                         cu.save(null, false);
 504                                                 }
 505                                         }
 506                                 }
 507                         }
 508
 509                         //register the correct change deltas
 510                         prepareDeltas(source, newFrag, isMove() && isEmpty);
 511                 } catch (DOMException dom) {
 512                         throw new JavaModelException(dom, IJavaModelStatusConstants.DOM_EXCEPTION);
 513                 } catch (JavaModelException e) {
 514                         throw e;
 515                 } catch (CoreException ce) {
 516                         throw new JavaModelException(ce);
 517                 }
 518         }
 519         /**
 520          * Updates the content of <code>cu</code>, modifying the type name and/or package
 521          * declaration as necessary.
 522          *
 523          * @return the new source
 524          */
 525         private String updatedContent(ICompilationUnit cu, IPackageFragment dest, String newName) throws JavaModelException {
 526                 String currPackageName = cu.getParent().getElementName();
 527                 String destPackageName = dest.getElementName();
 528                 if (currPackageName.equals(destPackageName) && newName == null) {
 529                         return null; //nothing to change
 530                 } else {
 531                         String typeName = cu.getElementName();
 532                         typeName = typeName.substring(0, typeName.length() - 5);
 533                         IDOMCompilationUnit cuDOM = null;
 534                         IBuffer buffer = cu.getBuffer();
 535                         if (buffer == null) return null;
 536                         char[] contents = buffer.getCharacters();
 537                         if (contents == null) return null;
 538                         cuDOM = fFactory.createCompilationUnit(contents, typeName);
 539                         updateTypeName(cu, cuDOM, cu.getElementName(), newName);
 540                         updatePackageStatement(cuDOM, destPackageName);
 541                         return cuDOM.getContents();
 542                 }
 543         }
 544         /**
 545          * Makes sure that <code>cu</code> declares to be in the <code>pkgName</code> package.
 546          */
 547         private void updatePackageStatement(IDOMCompilationUnit domCU, String pkgName) throws JavaModelException {
 548                 boolean defaultPackage = pkgName.equals(IPackageFragment.DEFAULT_PACKAGE_NAME);
 549                 boolean seenPackageNode = false;
 550                 Enumeration enum = domCU.getChildren();
 551                 while (enum.hasMoreElements()) {
 552                         IDOMNode node = (IDOMNode) enum.nextElement();
 553                         if (node.getNodeType() == IDOMNode.PACKAGE) {
 554                                 if (! defaultPackage) {
 555                                         node.setName(pkgName);
 556                                 } else {
 557                                         node.remove();
 558                                 }
 559                                 seenPackageNode = true;
 560                                 break;
 561                         }
 562                 }
 563                 if (!seenPackageNode && !defaultPackage) {
 564                         //the cu was in a default package...no package declaration
 565                         //create the new package declaration as the first child of the cu
 566 //                      IDOMPackage pkg = fFactory.createPackage("package " + pkgName + ";" + net.sourceforge.phpdt.internal.compiler.util.Util.LINE_SEPARATOR); //$NON-NLS-1$ //$NON-NLS-2$
 567 //                      IDOMNode firstChild = domCU.getFirstChild();
 568 //                      if (firstChild != null) {
 569 //                              firstChild.insertSibling(pkg);
 570 //                      } // else the cu was empty: leave it empty
 571                 }
 572         }
 573                 /**
 574                  * Renames the main type in <code>cu</code>.
 575                  */
 576                 private void updateTypeName(ICompilationUnit cu, IDOMCompilationUnit domCU, String oldName, String newName) throws JavaModelException {
 577                         if (newName != null) {
 578                                 if (fRenamedCompilationUnits == null) {
 579                                         fRenamedCompilationUnits= new ArrayList(1);
 580                                 }
 581                                 fRenamedCompilationUnits.add(cu);
 582                                 String oldTypeName= oldName.substring(0, oldName.length() - 5);
 583                                 String newTypeName= newName.substring(0, newName.length() - 5);
 584                                 // update main type name
 585                                 IType[] types = cu.getTypes();
 586                                 for (int i = 0, max = types.length; i < max; i++) {
 587                                         IType currentType = types[i];
 588                                         if (currentType.getElementName().equals(oldTypeName)) {
 589                                                 IDOMNode typeNode = ((JavaElement) currentType).findNode(domCU);
 590                                                 if (typeNode != null) {
 591                                                         typeNode.setName(newTypeName);
 592                                                 }
 593                                         }
 594                                 }
 595                         }
 596                 }
 597         /**
 598          * Possible failures:
 599          * <ul>
 600          *  <li>NO_ELEMENTS_TO_PROCESS - no elements supplied to the operation
 601          *      <li>INDEX_OUT_OF_BOUNDS - the number of renamings supplied to the operation
 602          *              does not match the number of elements that were supplied.
 603          * </ul>
 604          */
 605         protected IJavaModelStatus verify() {
 606                 IJavaModelStatus status = super.verify();
 607                 if (!status.isOK()) {
 608                         return status;
 609                 }
 610
 611                 if (fRenamingsList != null && fRenamingsList.length != fElementsToProcess.length) {
 612                         return new JavaModelStatus(IJavaModelStatusConstants.INDEX_OUT_OF_BOUNDS);
 613                 }
 614                 return JavaModelStatus.VERIFIED_OK;
 615         }
 616         /**
 617          * @see MultiOperation
 618          */
 619         protected void verify(IJavaElement element) throws JavaModelException {
 620                 if (element == null || !element.exists())
 621                         error(IJavaModelStatusConstants.ELEMENT_DOES_NOT_EXIST, element);
 622
 623                 if (element.isReadOnly() && (isRename() || isMove()))
 624                         error(IJavaModelStatusConstants.READ_ONLY, element);
 625
 626                 IResource resource = element.getResource();
 627                 if (resource instanceof IFolder) {
 628                         if (resource.isLinked()) {
 629                                 error(JavaModelStatus.INVALID_RESOURCE, element);
 630                         }
 631                 }
 632
 633                 int elementType = element.getElementType();
 634
 635                 if (elementType == IJavaElement.COMPILATION_UNIT) {
 636                         if (isMove() && ((ICompilationUnit) element).isWorkingCopy())
 637                                 error(IJavaModelStatusConstants.INVALID_ELEMENT_TYPES, element);
 638                 } else if (elementType != IJavaElement.PACKAGE_FRAGMENT) {
 639                         error(IJavaModelStatusConstants.INVALID_ELEMENT_TYPES, element);
 640                 }
 641
 642                 JavaElement dest = (JavaElement) getDestinationParent(element);
 643                 verifyDestination(element, dest);
 644                 if (fRenamings != null) {
 645                         verifyRenaming(element);
 646                 }
 647 }
 648 }