org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/project/wizards/importtrace/BatchImportTraceWizard.java

   1 /*******************************************************************************
   2  * Copyright (c) 2013, 2014 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Matthew Khouzam - Initial API and implementation
  11  *   Marc-Andre Laperle - Log some exceptions
  12  *******************************************************************************/
  13
  14 package org.eclipse.linuxtools.tmf.ui.project.wizards.importtrace;
  15
  16 import java.io.File;
  17 import java.io.FileInputStream;
  18 import java.lang.reflect.InvocationTargetException;
  19 import java.util.ArrayList;
  20 import java.util.Collections;
  21 import java.util.Comparator;
  22 import java.util.HashMap;
  23 import java.util.HashSet;
  24 import java.util.Iterator;
  25 import java.util.List;
  26 import java.util.Map;
  27 import java.util.Set;
  28 import java.util.TreeSet;
  29 import java.util.concurrent.BlockingQueue;
  30
  31 import org.eclipse.core.resources.IFile;
  32 import org.eclipse.core.resources.IFolder;
  33 import org.eclipse.core.resources.IResource;
  34 import org.eclipse.core.resources.ResourcesPlugin;
  35 import org.eclipse.core.runtime.CoreException;
  36 import org.eclipse.core.runtime.IPath;
  37 import org.eclipse.core.runtime.IProgressMonitor;
  38 import org.eclipse.core.runtime.IStatus;
  39 import org.eclipse.core.runtime.NullProgressMonitor;
  40 import org.eclipse.core.runtime.Path;
  41 import org.eclipse.core.runtime.Status;
  42 import org.eclipse.core.runtime.SubMonitor;
  43 import org.eclipse.jface.dialogs.ErrorDialog;
  44 import org.eclipse.jface.dialogs.IDialogSettings;
  45 import org.eclipse.jface.operation.IRunnableWithProgress;
  46 import org.eclipse.jface.viewers.IStructuredSelection;
  47 import org.eclipse.jface.wizard.IWizardPage;
  48 import org.eclipse.jface.wizard.WizardDialog;
  49 import org.eclipse.linuxtools.internal.tmf.ui.Activator;
  50 import org.eclipse.linuxtools.internal.tmf.ui.project.model.TmfImportHelper;
  51 import org.eclipse.linuxtools.tmf.core.project.model.TmfTraceType;
  52 import org.eclipse.linuxtools.tmf.core.project.model.TraceTypeHelper;
  53 import org.eclipse.linuxtools.tmf.core.project.model.TraceValidationHelper;
  54 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  55 import org.eclipse.linuxtools.tmf.ui.project.model.TmfProjectElement;
  56 import org.eclipse.linuxtools.tmf.ui.project.model.TmfProjectRegistry;
  57 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceElement;
  58 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceFolder;
  59 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceTypeUIUtils;
  60 import org.eclipse.ui.IWorkbench;
  61 import org.eclipse.ui.dialogs.IOverwriteQuery;
  62 import org.eclipse.ui.wizards.datatransfer.FileSystemStructureProvider;
  63 import org.eclipse.ui.wizards.datatransfer.ImportOperation;
  64
  65 /**
  66  * Batch Import trace wizard.
  67  *
  68  * @author Matthew Khouzam
  69  * @since 2.0
  70  */
  71 public class BatchImportTraceWizard extends ImportTraceWizard {
  72
  73     private static final int WIN_HEIGHT = 400;
  74     private static final int WIN_WIDTH = 800;
  75     private static final Status CANCEL_STATUS = new Status(IStatus.CANCEL, Activator.PLUGIN_ID, ""); //$NON-NLS-1$
  76     private static final int TOTALWORK = 65536;
  77     // -----------------
  78     // Constants
  79     // -----------------
  80
  81     private static final int MAX_FILES = TOTALWORK - 1;
  82     private static final String BATCH_IMPORT_WIZARD = "BatchImportTraceWizard"; //$NON-NLS-1$
  83
  84     // ------------------
  85     // Fields
  86     // ------------------
  87
  88     private IWizardPage fSelectDirectoriesPage;
  89     private ImportTraceWizardScanPage fScanPage;
  90     private IWizardPage fSelectTypePage;
  91     private IWizardPage fOptions;
  92
  93     private final List<String> fTraceTypesToScan = new ArrayList<>();
  94     private final Set<String> fParentFilesToScan = new HashSet<>();
  95
  96     private ImportTraceContentProvider fScannedTraces = new ImportTraceContentProvider(fTraceTypesToScan, fParentFilesToScan);
  97
  98     private final Map<TraceValidationHelper, Boolean> fResults = new HashMap<>();
  99     private boolean fOverwrite = true;
 100     private boolean fLinked = true;
 101
 102     private BlockingQueue<TraceValidationHelper> fTracesToScan;
 103     private final Set<FileAndName> fTraces = new TreeSet<>();
 104
 105     private Map<String, Set<String>> fParentFiles = new HashMap<>();
 106
 107     // Target import directory ('Traces' folder)
 108     private IFolder fTargetFolder;
 109
 110     /**
 111      * Returns the ScannedTraces model
 112      *
 113      * @return the ScannedTraces model
 114      */
 115     public ImportTraceContentProvider getScannedTraces() {
 116         return fScannedTraces;
 117     }
 118
 119     /**
 120      * Constructor
 121      */
 122     public BatchImportTraceWizard() {
 123         IDialogSettings workbenchSettings = Activator.getDefault().getDialogSettings();
 124         IDialogSettings section = workbenchSettings.getSection(BATCH_IMPORT_WIZARD);
 125         if (section == null) {
 126             section = workbenchSettings.addNewSection(BATCH_IMPORT_WIZARD);
 127         }
 128         setDialogSettings(section);
 129         setNeedsProgressMonitor(true);
 130     }
 131
 132     @Override
 133     public void init(IWorkbench workbench, IStructuredSelection selection) {
 134
 135         fSelectDirectoriesPage = new ImportTraceWizardSelectDirectoriesPage(workbench, selection);
 136         fScanPage = new ImportTraceWizardScanPage(workbench, selection);
 137         fSelectTypePage = new ImportTraceWizardSelectTraceTypePage(workbench, selection);
 138         fOptions = new ImportTraceWizardPageOptions(workbench, selection);
 139         // keep in case it's called later
 140         Iterator<?> iter = selection.iterator();
 141         while (iter.hasNext()) {
 142             Object selected = iter.next();
 143             if (selected instanceof TmfTraceFolder) {
 144                 fTargetFolder = ((TmfTraceFolder) selected).getResource();
 145                 break;
 146             }
 147         }
 148         fResults.clear();
 149     }
 150
 151     @Override
 152     public void addPages() {
 153         addPage(fSelectTypePage);
 154         addPage(fSelectDirectoriesPage);
 155         addPage(fScanPage);
 156         addPage(fOptions);
 157         final WizardDialog container = (WizardDialog) getContainer();
 158         if (container != null) {
 159             container.setPageSize(WIN_WIDTH, WIN_HEIGHT);
 160         }
 161     }
 162
 163     /**
 164      * Add a file to scan
 165      *
 166      * @param fileName
 167      *            the file to scan
 168      */
 169     public void addFileToScan(final String fileName) {
 170         String absolutePath = new File(fileName).getAbsolutePath();
 171         if (!fParentFiles.containsKey(absolutePath)) {
 172             fParentFiles.put(absolutePath, new HashSet<String>());
 173             startUpdateTask(Messages.BatchImportTraceWizardAdd + ' ' + absolutePath, absolutePath);
 174
 175         }
 176
 177     }
 178
 179     /**
 180      * Remove files from selection
 181      *
 182      * @param fileName
 183      *            the name of the file to remove
 184      */
 185     public void removeFile(final String fileName) {
 186         fParentFiles.remove(fileName);
 187         fParentFilesToScan.remove(fileName);
 188         startUpdateTask(Messages.BatchImportTraceWizardRemove + ' ' + fileName, null);
 189     }
 190
 191     private void startUpdateTask(final String taskName, final String fileAbsolutePath) {
 192         try {
 193             this.getContainer().run(true, true, new IRunnableWithProgress() {
 194
 195                 @Override
 196                 public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
 197                     synchronized (BatchImportTraceWizard.this) { // this should
 198                                                                  // only run one
 199                                                                  // at a time
 200                         SubMonitor sm;
 201                         sm = SubMonitor.convert(monitor);
 202                         sm.setTaskName(taskName);
 203                         sm.setWorkRemaining(TOTALWORK);
 204                         updateFiles(sm, fileAbsolutePath);
 205                         sm.done();
 206                     }
 207                 }
 208             });
 209         } catch (InvocationTargetException e) {
 210             Activator.getDefault().logError(Messages.ImportTraceWizardImportProblem, e);
 211         } catch (InterruptedException e) {
 212         }
 213     }
 214
 215     /**
 216      * The set of names of the selected files
 217      *
 218      * @return the set of names of the selected files
 219      */
 220     public Set<String> getFileNames() {
 221         return fParentFilesToScan;
 222     }
 223
 224     /**
 225      * Reset the trace list to import
 226      */
 227     public void clearTraces() {
 228         fTraces.clear();
 229     }
 230
 231     @Override
 232     public boolean performFinish() {
 233         if (fTraces.isEmpty()) {
 234             return false;
 235         }
 236         // if this turns out to be too slow, put in a progress monitor. Does not
 237         // appear to be slow for the moment.
 238         boolean success = importTraces();
 239         return success;
 240     }
 241
 242     private boolean importTraces() {
 243         boolean success = false;
 244         IOverwriteQuery overwriteQuery = new IOverwriteQuery() {
 245             @Override
 246             public String queryOverwrite(String file) {
 247                 return fOverwrite ? IOverwriteQuery.ALL : IOverwriteQuery.NO_ALL;
 248             }
 249         };
 250         FileSystemStructureProvider fileSystemStructureProvider = FileSystemStructureProvider.INSTANCE;
 251
 252         for (FileAndName traceToImport : fTraces) {
 253             try {
 254                 if (fLinked) {
 255                     if (TmfImportHelper.createLink(fTargetFolder, Path.fromOSString(traceToImport.getFile().getAbsolutePath()), traceToImport.getName()) == null) {
 256                         success = false;
 257                     }
 258                     else {
 259                         success = setTraceType(traceToImport).isOK();
 260                     }
 261                 }
 262                 else {
 263                     List<File> subList = new ArrayList<>();
 264                     IPath path = fTargetFolder.getFullPath();
 265                     File parentFile = traceToImport.getFile();
 266                     final boolean isFile = parentFile.isFile();
 267                     if (isFile) {
 268                         IFile resource = ResourcesPlugin.getWorkspace().getRoot().getFile(path.append(traceToImport.getName()));
 269                         if (fOverwrite || !resource.exists()) {
 270                             subList.add(parentFile);
 271                             parentFile = parentFile.getParentFile();
 272                             try (final FileInputStream source = new FileInputStream(traceToImport.getFile());) {
 273                                 if (resource.exists()) {
 274                                     resource.delete(IResource.FORCE, new NullProgressMonitor());
 275                                 }
 276                                 resource.create(source, true, new NullProgressMonitor());
 277                             }
 278                             setTraceType(traceToImport);
 279                             success = true;
 280                         }
 281                     } else {
 282                         // Add trace directory
 283                         subList.add(traceToImport.getFile());
 284                         // Add all files in trace directory
 285                         File[] fileList = traceToImport.getFile().listFiles();
 286                         for (File child : fileList) {
 287                             subList.add(child);
 288                         }
 289
 290                         Collections.sort(subList, new Comparator<File>() {
 291                             @Override
 292                             public int compare(File o1, File o2) {
 293                                 return o1.getAbsolutePath().compareTo(o2.getAbsolutePath());
 294                             }
 295                         });
 296                         ImportOperation operation = new ImportOperation(
 297                                 path,
 298                                 parentFile.getParentFile(),
 299                                 fileSystemStructureProvider,
 300                                 overwriteQuery,
 301                                 subList);
 302                         operation.setContext(getShell());
 303                         operation.setCreateContainerStructure(false);
 304                         if (executeImportOperation(operation)) {
 305                             setTraceType(traceToImport);
 306                             success = true;
 307                         }
 308                     }
 309
 310                 }
 311             } catch (Exception e) {
 312             }
 313         }
 314         return success;
 315     }
 316
 317     private IStatus setTraceType(FileAndName traceToImport) {
 318         IStatus validate = Status.OK_STATUS;
 319         IResource resource = fTargetFolder.findMember(traceToImport.getName());
 320         if (resource != null) {
 321             try {
 322                 // Set the trace type for this resource
 323                 String traceTypeId = traceToImport.getTraceTypeId();
 324                 TraceTypeHelper traceType = TmfTraceType.getInstance().getTraceType(traceTypeId);
 325                 if (traceType != null) {
 326                     TmfTraceTypeUIUtils.setTraceType(resource, traceType);
 327                 }
 328
 329                 TmfProjectElement tmfProject =
 330                         TmfProjectRegistry.getProject(resource.getProject());
 331                 if (tmfProject != null) {
 332                     final TmfTraceFolder tracesFolder = tmfProject.getTracesFolder();
 333
 334                     List<TmfTraceElement> traces = tracesFolder.getTraces();
 335                     boolean found = false;
 336                     for (TmfTraceElement traceElement : traces) {
 337                         if (traceElement.getName().equals(resource.getName())) {
 338                             traceElement.refreshTraceType();
 339                             found = true;
 340                             break;
 341                         }
 342                     }
 343                     if (!found) {
 344                         TmfTraceElement te = new TmfTraceElement(traceToImport.getName(), resource, tracesFolder);
 345                         te.refreshTraceType();
 346                         traces = tracesFolder.getTraces();
 347                         for (TmfTraceElement traceElement : traces) {
 348                             if (traceElement.getName().equals(resource.getName())) {
 349                                 traceElement.refreshTraceType();
 350                                 ITmfTrace tmfTrace = null;
 351                                 try {
 352                                     tmfTrace = traceElement.instantiateTrace();
 353                                     if (tmfTrace != null) {
 354                                         validate = tmfTrace.validate(tmfProject.getResource(), traceElement.getLocation().getPath());
 355                                     } else {
 356                                         return new Status(IStatus.ERROR, traceElement.getName(), "File does not exist : " + traceElement.getLocation().getPath()); //$NON-NLS-1$
 357                                     }
 358                                 } finally {
 359                                     if (tmfTrace != null) {
 360                                         tmfTrace.dispose();
 361                                     }
 362                                 }
 363                                 break;
 364                             }
 365                         }
 366
 367                     }
 368
 369                 }
 370             } catch (CoreException e) {
 371                 Activator.getDefault().logError(Messages.BatchImportTraceWizardErrorImportingTraceResource
 372                         + ' ' + resource.getName(), e);
 373             }
 374         }
 375         return validate;
 376     }
 377
 378     @Override
 379     public boolean canFinish() {
 380         return super.canFinish() && hasTracesToImport() && !hasConflicts() && (fTargetFolder != null);
 381     }
 382
 383     /**
 384      * Returns if a trace to import is selected
 385      *
 386      * @return if there are traces to import
 387      */
 388     public boolean hasTracesToImport() {
 389         return fTraces.size() > 0;
 390     }
 391
 392     /**
 393      * Reset the files to scan
 394      */
 395     public void clearFilesToScan() {
 396         fTracesToScan.clear();
 397     }
 398
 399     /**
 400      * Set the trace types to scan
 401      *
 402      * @param tracesToScan
 403      *            a list of trace types to scan for
 404      */
 405     public void setTraceTypesToScan(List<String> tracesToScan) {
 406         // intersection to know if there's a diff.
 407         // if there's a diff, we need to re-enque everything
 408         List<String> added = new ArrayList<>();
 409         for (String traceLoc : tracesToScan) {
 410             if (!fTraceTypesToScan.contains(traceLoc)) {
 411                 added.add(traceLoc);
 412             }
 413         }
 414         fTraceTypesToScan.clear();
 415         fTraceTypesToScan.addAll(tracesToScan);
 416         updateTracesToScan(added);
 417     }
 418
 419     /**
 420      * Get the trace types to scan
 421      *
 422      * @return a list of traces to Scan for
 423      */
 424     public List<String> getTraceTypesToScan() {
 425         return fTraceTypesToScan;
 426     }
 427
 428     /**
 429      * Add files to Import
 430      *
 431      * @param element
 432      *            add the file and tracetype to import
 433      */
 434     public void addFileToImport(FileAndName element) {
 435         fTraces.add(element);
 436         updateConflicts();
 437     }
 438
 439     /**
 440      * Remove the file to scan
 441      *
 442      * @param element
 443      *            the element to remove
 444      */
 445     public void removeFileToImport(FileAndName element) {
 446         fTraces.remove(element);
 447         element.setConflictingName(false);
 448         updateConflicts();
 449     }
 450
 451     /**
 452      * Updates the trace to see if there are conflicts.
 453      */
 454     public void updateConflicts() {
 455         final FileAndName[] fChildren = fTraces.toArray(new FileAndName[0]);
 456         for (int i = 0; i < fChildren.length; i++) {
 457             fChildren[i].setConflictingName(false);
 458         }
 459         for (int i = 1; i < fChildren.length; i++) {
 460             for (int j = 0; j < i; j++) {
 461                 if (fChildren[i].getName().equals(fChildren[j].getName())) {
 462                     fChildren[i].setConflictingName(true);
 463                     fChildren[j].setConflictingName(true);
 464                 }
 465             }
 466         }
 467         getContainer().updateButtons();
 468     }
 469
 470     /**
 471      * Is there a name conflict
 472      */
 473     boolean hasConflicts() {
 474         boolean conflict = false;
 475         for (FileAndName child : fTraces) {
 476             conflict |= child.isConflictingName();
 477         }
 478         return conflict;
 479     }
 480
 481     private boolean executeImportOperation(ImportOperation op) {
 482         initializeOperation(op);
 483
 484         try {
 485             getContainer().run(true, true, op);
 486         } catch (InterruptedException e) {
 487             return false;
 488         } catch (InvocationTargetException e) {
 489             Activator.getDefault().logError(Messages.ImportTraceWizardImportProblem, e);
 490             return false;
 491         }
 492
 493         IStatus status = op.getStatus();
 494         if (!status.isOK()) {
 495             ErrorDialog.openError(getContainer().getShell(), Messages.ImportTraceWizardImportProblem, null, status);
 496             return false;
 497         }
 498
 499         return true;
 500     }
 501
 502     private static void initializeOperation(ImportOperation op) {
 503         op.setCreateContainerStructure(false);
 504         op.setOverwriteResources(false);
 505         op.setVirtualFolders(false);
 506     }
 507
 508     /**
 509      * Override existing resources
 510      *
 511      * @param selection
 512      *            true or false
 513      */
 514     public void setOverwrite(boolean selection) {
 515         fOverwrite = selection;
 516     }
 517
 518     /**
 519      * Is the trace linked?
 520      *
 521      * @param isLink
 522      *            true or false
 523      */
 524     public void setLinked(boolean isLink) {
 525         fLinked = isLink;
 526     }
 527
 528     /**
 529      * @param tracesToScan
 530      *            sets the common traces to scan
 531      */
 532     public void setTracesToScan(BlockingQueue<TraceValidationHelper> tracesToScan) {
 533         fTracesToScan = tracesToScan;
 534     }
 535
 536     /**
 537      * @param traceToScan
 538      *            The trace to scan
 539      * @return if the trace has been scanned yet or not
 540      * @since 3.0
 541      */
 542     public boolean hasScanned(TraceValidationHelper traceToScan) {
 543         return fResults.containsKey(traceToScan);
 544     }
 545
 546     /**
 547      * Add a result to a cache
 548      *
 549      * @param traceToScan
 550      *            The trace that has been scanned
 551      * @param validate
 552      *            if the trace is valid
 553      * @since 3.0
 554      */
 555     public void addResult(TraceValidationHelper traceToScan, boolean validate) {
 556         fResults.put(traceToScan, validate);
 557     }
 558
 559     /**
 560      * Gets if the trace has been scanned or not
 561      *
 562      * @param traceToScan
 563      *            the scanned trace
 564      * @return whether it passes or not
 565      * @since 3.0
 566      */
 567     public boolean getResult(TraceValidationHelper traceToScan) {
 568         return fResults.get(traceToScan);
 569     }
 570
 571     /**
 572      * Returns the amount of files scanned
 573      *
 574      * @return the amount of files scanned
 575      */
 576     public int getNumberOfResults() {
 577         return fResults.size();
 578     }
 579
 580     private void updateTracesToScan(final List<String> added) {
 581         // Treeset is used instead of a hashset since the traces should be read
 582         // in the order they were added.
 583         final Set<String> filesToScan = new TreeSet<>();
 584         for (String name : fParentFiles.keySet()) {
 585             filesToScan.addAll(fParentFiles.get(name));
 586         }
 587         IProgressMonitor pm = new NullProgressMonitor();
 588         try {
 589             updateScanQueue(pm, filesToScan, added);
 590         } catch (InterruptedException e) {
 591         }
 592
 593     }
 594
 595     /*
 596      * I am a job. Make me work
 597      */
 598     private synchronized IStatus updateFiles(IProgressMonitor monitor, String traceToScanAbsPath) {
 599         final Set<String> filesToScan = new TreeSet<>();
 600
 601         int workToDo = 1;
 602         for (String name : fParentFiles.keySet()) {
 603
 604             final File file = new File(name);
 605             final File[] listFiles = file.listFiles();
 606             if (listFiles != null) {
 607                 workToDo += listFiles.length;
 608             }
 609         }
 610         int step = TOTALWORK / workToDo;
 611         try {
 612             for (String name : fParentFiles.keySet()) {
 613                 final File fileToAdd = new File(name);
 614                 final Set<String> parentFilesToScan = fParentFiles.get(fileToAdd.getAbsolutePath());
 615                 recurse(parentFilesToScan, fileToAdd, monitor, step);
 616                 if (monitor.isCanceled()) {
 617                     fParentFilesToScan.remove(traceToScanAbsPath);
 618                     fParentFiles.remove(traceToScanAbsPath);
 619                     return CANCEL_STATUS;
 620                 }
 621             }
 622             filesToScan.clear();
 623             for (String name : fParentFiles.keySet()) {
 624                 filesToScan.addAll(fParentFiles.get(name));
 625                 fParentFilesToScan.add(name);
 626             }
 627             IStatus cancelled = updateScanQueue(monitor, filesToScan, fTraceTypesToScan);
 628             if (cancelled.matches(IStatus.CANCEL)) {
 629                 fParentFilesToScan.remove(traceToScanAbsPath);
 630                 fParentFiles.remove(traceToScanAbsPath);
 631             }
 632         } catch (InterruptedException e) {
 633             monitor.done();
 634             return new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getMessage(), e);
 635         }
 636
 637         monitor.done();
 638         return Status.OK_STATUS;
 639     }
 640
 641     private IStatus updateScanQueue(IProgressMonitor monitor, final Set<String> filesToScan, final List<String> traceTypes) throws InterruptedException {
 642         for (String fileToScan : filesToScan) {
 643             for (String traceCat : traceTypes) {
 644                 TraceValidationHelper tv = new TraceValidationHelper(fileToScan, traceCat);
 645                 // for thread safety, keep checks in this order.
 646                 if (!fResults.containsKey(tv)) {
 647                     if (!fTracesToScan.contains(tv)) {
 648                         fTracesToScan.put(tv);
 649                         monitor.subTask(tv.getTraceToScan());
 650                         if (monitor.isCanceled()) {
 651                             fScanPage.refresh();
 652                             return CANCEL_STATUS;
 653                         }
 654                     }
 655                 }
 656             }
 657         }
 658         fScanPage.refresh();
 659         return Status.OK_STATUS;
 660     }
 661
 662     private IStatus recurse(Set<String> filesToScan, File fileToAdd, IProgressMonitor monitor, int step) {
 663         final String absolutePath = fileToAdd.getAbsolutePath();
 664         if (!filesToScan.contains(absolutePath) && (filesToScan.size() < MAX_FILES)) {
 665             filesToScan.add(absolutePath);
 666             final File[] listFiles = fileToAdd.listFiles();
 667             if (null != listFiles) {
 668                 for (File child : listFiles) {
 669                     monitor.subTask(child.getName());
 670                     if (monitor.isCanceled()) {
 671                         return CANCEL_STATUS;
 672                     }
 673                     IStatus retVal = recurse(filesToScan, child, monitor);
 674                     if (retVal.matches(IStatus.CANCEL)) {
 675                         return retVal;
 676                     }
 677                     monitor.worked(step);
 678                 }
 679             }
 680         }
 681         return Status.OK_STATUS;
 682     }
 683
 684     private IStatus recurse(Set<String> filesToScan, File fileToAdd, IProgressMonitor monitor) {
 685         final String absolutePath = fileToAdd.getAbsolutePath();
 686         if (!filesToScan.contains(absolutePath) && (filesToScan.size() < MAX_FILES)) {
 687             filesToScan.add(absolutePath);
 688             final File[] listFiles = fileToAdd.listFiles();
 689             if (null != listFiles) {
 690                 for (File child : listFiles) {
 691                     if (monitor.isCanceled()) {
 692                         return CANCEL_STATUS;
 693                     }
 694                     IStatus retVal = recurse(filesToScan, child, monitor);
 695                     if (retVal.matches(IStatus.CANCEL)) {
 696                         return retVal;
 697                     }
 698                 }
 699             }
 700         }
 701         return Status.OK_STATUS;
 702     }
 703
 704     /**
 705      * Gets the folder in the resource (project)
 706      *
 707      * @param targetFolder
 708      *            the folder to import to
 709      */
 710     public void setTraceFolder(IFolder targetFolder) {
 711         fTargetFolder = targetFolder;
 712         if (this.getContainer() != null && this.getContainer().getCurrentPage() != null) {
 713             this.getContainer().updateButtons();
 714         }
 715     }
 716
 717     /**
 718      * Gets the target folder
 719      *
 720      * @return the target folder
 721      */
 722     public IFolder getTargetFolder() {
 723         return fTargetFolder;
 724     }
 725
 726 }