code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/FileList.java

   1 /*
   2  * Copyright 2011-2012 GRNET S.A. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or
   5  * without modification, are permitted provided that the following
   6  * conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above
   9  *      copyright notice, this list of conditions and the following
  10  *      disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials
  15  *      provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and
  31  * documentation are those of the authors and should not be
  32  * interpreted as representing official policies, either expressed
  33  * or implied, of GRNET S.A.
  34  */
  35
  36 package gr.grnet.pithos.web.client;
  37
  38 import gr.grnet.pithos.web.client.foldertree.File;
  39 import gr.grnet.pithos.web.client.foldertree.Folder;
  40 import gr.grnet.pithos.web.client.foldertree.FolderTreeView;
  41
  42 import java.util.ArrayList;
  43 import java.util.Collections;
  44 import java.util.Comparator;
  45 import java.util.Iterator;
  46 import java.util.List;
  47
  48 import com.google.gwt.cell.client.Cell.Context;
  49 import com.google.gwt.cell.client.ImageResourceCell;
  50 import com.google.gwt.cell.client.SafeHtmlCell;
  51 import com.google.gwt.cell.client.TextCell;
  52 import com.google.gwt.cell.client.ValueUpdater;
  53 import com.google.gwt.core.client.GWT;
  54 import com.google.gwt.event.dom.client.ContextMenuEvent;
  55 import com.google.gwt.event.dom.client.ContextMenuHandler;
  56 import com.google.gwt.http.client.URL;
  57 import com.google.gwt.i18n.client.DateTimeFormat;
  58 import com.google.gwt.resources.client.ImageResource;
  59 import com.google.gwt.resources.client.ClientBundle.Source;
  60 import com.google.gwt.resources.client.ImageResource.ImageOptions;
  61 import com.google.gwt.resources.client.ImageResource.RepeatStyle;
  62 import com.google.gwt.safehtml.client.SafeHtmlTemplates;
  63 import com.google.gwt.safehtml.shared.SafeHtml;
  64 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
  65 import com.google.gwt.user.cellview.client.CellTable;
  66 import com.google.gwt.user.cellview.client.Column;
  67 import com.google.gwt.user.client.Command;
  68 import com.google.gwt.user.client.DOM;
  69 import com.google.gwt.user.client.Event;
  70 import com.google.gwt.user.client.Window;
  71 import com.google.gwt.user.client.ui.Composite;
  72 import com.google.gwt.user.client.ui.VerticalPanel;
  73 import com.google.gwt.view.client.ListDataProvider;
  74 import com.google.gwt.view.client.MultiSelectionModel;
  75 import com.google.gwt.view.client.ProvidesKey;
  76 import com.google.gwt.view.client.SelectionChangeEvent;
  77
  78 /**
  79  * A composite that displays the list of files in a particular folder.
  80  */
  81 public class FileList extends Composite {
  82
  83         ListDataProvider<File> provider = new ListDataProvider<File>();
  84
  85     /**
  86        * The styles applied to the table.
  87        */
  88     interface TableStyle extends CellTable.Style {
  89         String cellTableFirstColumnShared();
  90     }
  91
  92         interface TableResources extends CellTable.Resources {
  93             @Override
  94                 @Source({CellTable.Style.DEFAULT_CSS, "PithosCellTable.css"})
  95             TableStyle cellTableStyle();
  96
  97             @Source("share.png")
  98             @ImageOptions(repeatStyle = RepeatStyle.None)
  99             ImageResource cellTableSharedIcon();
 100         }
 101
 102         static interface Templates extends SafeHtmlTemplates {
 103             Templates INSTANCE = GWT.create(Templates.class);
 104
 105             @Template("<div id='dragHelper' style='border:1px solid black; background-color:#ffffff; color:black; width:150px;z-index:100'></div>")
 106             SafeHtml outerHelper();
 107
 108         @Template("<span id='{0}'>{0}</span>")
 109         public SafeHtml filenameSpan(String filename);
 110
 111         @Template("<a href='{0}' title='{1}' rel='lytebox[mnf]' onclick='myLytebox.start(this, false, false); return false;'>(view)</a>")
 112         public SafeHtml viewLink(String link, String title);
 113
 114         @Template("<table><tr><td rowspan='3'>{0}</td><td style='font-size:95%;' id='{1}'>{1}</td></tr><tr><td>{2}</td></tr></table>")
 115         public SafeHtml rendelContactCell(String imageHtml, String name, String fileSize);
 116
 117         @Template("<span id='{0}' class='{1}'>{2}</span>")
 118         public SafeHtml spanWithIdAndClass(String id, String cssClass, String content);
 119         }
 120
 121         protected final DateTimeFormat formatter = DateTimeFormat.getFormat("d/M/yyyy h:mm a");
 122
 123         /**
 124          * Specifies that the images available for this composite will be the ones
 125          * available in FileContextMenu.
 126          */
 127         public interface Images extends FolderTreeView.Images {
 128
 129                 @Source("gr/grnet/pithos/resources/blank.gif")
 130                 ImageResource blank();
 131
 132                 @Source("gr/grnet/pithos/resources/asc.png")
 133                 ImageResource asc();
 134
 135                 @Source("gr/grnet/pithos/resources/desc.png")
 136                 ImageResource desc();
 137
 138                 @Source("gr/grnet/pithos/resources/mimetypes/document_shared.png")
 139                 ImageResource documentShared();
 140
 141                 @Source("gr/grnet/pithos/resources/mimetypes/kcmfontinst.png")
 142                 ImageResource wordprocessor();
 143
 144                 @Source("gr/grnet/pithos/resources/mimetypes/log.png")
 145                 ImageResource spreadsheet();
 146
 147                 @Source("gr/grnet/pithos/resources/mimetypes/kpresenter_kpr.png")
 148                 ImageResource presentation();
 149
 150                 @Source("gr/grnet/pithos/resources/mimetypes/acroread.png")
 151                 ImageResource pdf();
 152
 153                 @Source("gr/grnet/pithos/resources/mimetypes/image.png")
 154                 ImageResource image();
 155
 156                 @Source("gr/grnet/pithos/resources/mimetypes/video2.png")
 157                 ImageResource video();
 158
 159                 @Source("gr/grnet/pithos/resources/mimetypes/knotify.png")
 160                 ImageResource audio();
 161
 162                 @Source("gr/grnet/pithos/resources/mimetypes/html.png")
 163                 ImageResource html();
 164
 165                 @Source("gr/grnet/pithos/resources/mimetypes/txt.png")
 166                 ImageResource txt();
 167
 168                 @Source("gr/grnet/pithos/resources/mimetypes/ark2.png")
 169                 ImageResource zip();
 170
 171                 @Source("gr/grnet/pithos/resources/mimetypes/kcmfontinst_shared.png")
 172                 ImageResource wordprocessorShared();
 173
 174                 @Source("gr/grnet/pithos/resources/mimetypes/log_shared.png")
 175                 ImageResource spreadsheetShared();
 176
 177                 @Source("gr/grnet/pithos/resources/mimetypes/kpresenter_kpr_shared.png")
 178                 ImageResource presentationShared();
 179
 180                 @Source("gr/grnet/pithos/resources/mimetypes/acroread_shared.png")
 181                 ImageResource pdfShared();
 182
 183                 @Source("gr/grnet/pithos/resources/mimetypes/image_shared.png")
 184                 ImageResource imageShared();
 185
 186                 @Source("gr/grnet/pithos/resources/mimetypes/video2_shared.png")
 187                 ImageResource videoShared();
 188
 189                 @Source("gr/grnet/pithos/resources/mimetypes/knotify_shared.png")
 190                 ImageResource audioShared();
 191
 192                 @Source("gr/grnet/pithos/resources/mimetypes/html_shared.png")
 193                 ImageResource htmlShared();
 194
 195                 @Source("gr/grnet/pithos/resources/mimetypes/txt_shared.png")
 196                 ImageResource txtShared();
 197
 198                 @Source("gr/grnet/pithos/resources/mimetypes/ark2_shared.png")
 199                 ImageResource zipShared();
 200
 201         }
 202
 203         /**
 204          * The number of files in this folder.
 205          */
 206         int folderFileCount;
 207
 208         /**
 209          * Total folder size
 210          */
 211         long folderTotalSize;
 212
 213         /**
 214          * A cache of the files in the list.
 215          */
 216         private List<File> files;
 217
 218         /**
 219          * The widget's image bundle.
 220          */
 221         protected final Images images;
 222
 223         protected CellTable<File> celltable;
 224
 225         private final MultiSelectionModel<File> selectionModel;
 226
 227         protected final List<SortableHeader> allHeaders = new ArrayList<SortableHeader>();
 228
 229         SortableHeader nameHeader;
 230
 231     FolderTreeView treeView;
 232
 233     protected Pithos app;
 234
 235     /**
 236          * Construct the file list widget. This entails setting up the widget
 237          * layout, fetching the number of files in the current folder from the
 238          * server and filling the local file cache of displayed files with data from
 239          * the server, as well.
 240          *
 241          * @param _images
 242          */
 243         public FileList(final Pithos _app, Images _images, FolderTreeView _treeView) {
 244         app = _app;
 245                 images = _images;
 246         this.treeView = _treeView;
 247
 248         final CellTable.Resources resources = GWT.create(TableResources.class);
 249
 250         ProvidesKey<File> keyProvider = new ProvidesKey<File>(){
 251
 252                         @Override
 253                         public Object getKey(File item) {
 254                                 return item.getUri();
 255                         }
 256                 };
 257
 258                 celltable = new CellTable<File>(10, resources, keyProvider);
 259         celltable.setWidth("100%");
 260         celltable.setStyleName("pithos-List");
 261
 262                 Column<File, ImageResource> status = new Column<File, ImageResource>(new ImageResourceCell() {
 263                     @Override
 264                 public boolean handlesSelection() {
 265                     return false;
 266                 }
 267                 })
 268         {
 269                  @Override
 270                  public ImageResource getValue(File entity) {
 271                      return getFileIcon(entity);
 272                  }
 273
 274                         @Override
 275                         public String getCellStyleNames(Context context, File object) {
 276                                 if (!object.getPermissions().isEmpty() && !object.isPublished())
 277                                         return ((TableStyle) resources.cellTableStyle()).cellTableFirstColumnShared();
 278                                 return super.getCellStyleNames(context, object);
 279                         }
 280             };
 281             celltable.addColumn(status,"");
 282
 283         final Column<File,SafeHtml> nameColumn = new Column<File,SafeHtml>(new SafeHtmlCell()) {
 284
 285                         @Override
 286                         public SafeHtml getValue(File object) {
 287                                 SafeHtmlBuilder sb = new SafeHtmlBuilder();
 288                 sb.append(Templates.INSTANCE.filenameSpan(object.getName()));
 289                                 if (object.getContentType() != null && (object.getContentType().endsWith("png") || object.getContentType().endsWith("gif") || object.getContentType().endsWith("jpeg"))) {
 290                                 sb.appendHtmlConstant("&nbsp;")
 291                       .append(Templates.INSTANCE.viewLink(app.getApiPath() + object.getOwner() + object.getUri(), object.getName()));
 292                                 }
 293
 294                                 return sb.toSafeHtml();
 295                         }
 296
 297                 };
 298         celltable.addColumn(nameColumn, nameHeader = new SortableHeader("Name", "name"));
 299                 allHeaders.add(nameHeader);
 300                 nameHeader.setUpdater(new FileValueUpdater(nameHeader));
 301                 nameHeader.setSorted(true);
 302                 nameHeader.setReverseSort(true);
 303
 304                 celltable.redrawHeaders();
 305
 306         Column<File,String> aColumn = new Column<File,String>(new TextCell()) {
 307                         @Override
 308                         public String getValue(File object) {
 309                                 return object.getSizeAsString();
 310                         }
 311                 };
 312         SortableHeader aheader = new SortableHeader("Size", "size");
 313         celltable.addColumn(aColumn, aheader);
 314                 allHeaders.add(aheader);
 315                 aheader.setUpdater(new FileValueUpdater(aheader));
 316
 317         aColumn = new Column<File,String>(new TextCell()) {
 318                         @Override
 319                         public String getValue(File object) {
 320                                 return object.getLastModified() != null ? formatter.format(object.getLastModified()) : "";
 321                         }
 322                 };
 323         aheader = new SortableHeader("Last Modified", "date");
 324                 celltable.addColumn(aColumn, aheader);
 325                 allHeaders.add(aheader);
 326                 aheader.setUpdater(new FileValueUpdater(aheader));
 327
 328                 provider.addDataDisplay(celltable);
 329
 330                 VerticalPanel vp = new VerticalPanel();
 331                 vp.setWidth("100%");
 332                 vp.addStyleName("pithos-FileListContainer");
 333
 334         vp.add(celltable);
 335
 336                 vp.setCellWidth(celltable, "100%");
 337         vp.addHandler(new ContextMenuHandler() {
 338             @Override
 339             public void onContextMenu(final ContextMenuEvent event) {
 340                 final TreeView tree = app.getSelectedTree();
 341                 if (tree != null && (tree.equals(app.getFolderTreeView()) || tree.equals(app.getOtherSharedTreeView()))) {
 342                         final int x = event.getNativeEvent().getClientX();
 343                         final int y = event.getNativeEvent().getClientY();
 344                         final Folder selectedFolder = app.getSelection();
 345                         app.scheduleFolderHeadCommand(selectedFolder, new Command() {
 346
 347                                                 @Override
 348                                                 public void execute() {
 349                                                         final List<File> selectedFiles = getSelectedFiles();
 350                                                         Iterator<File> iter = selectedFiles.iterator();
 351                                                         iterateFilesHeadCommand(iter, new Command() {
 352
 353                                                                 @Override
 354                                                                 public void execute() {
 355                                                         FileContextMenu contextMenu = new FileContextMenu(app, images, tree, selectedFolder, selectedFiles);
 356                                                         contextMenu.setPopupPosition(x, y);
 357                                                         contextMenu.show();
 358                                                                 }
 359                                                         });
 360                                                 }
 361                                         });
 362                 }
 363             }
 364         }, ContextMenuEvent.getType());
 365                 initWidget(vp);
 366
 367                 selectionModel = new MultiSelectionModel<File>(keyProvider);
 368                 selectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 369
 370                         @Override
 371                         public void onSelectionChange(SelectionChangeEvent event) {
 372                                 app.showRelevantToolbarButtons();
 373                         }
 374                 });
 375
 376                 celltable.setSelectionModel(selectionModel, PithosSelectionEventManager.<File> createDefaultManager());
 377 //              celltable.setPageSize(Pithos.VISIBLE_FILE_COUNT);
 378
 379                 sinkEvents(Event.ONCONTEXTMENU);
 380 //              sinkEvents(Event.ONMOUSEUP);
 381 //              sinkEvents(Event.ONMOUSEDOWN);
 382 //              sinkEvents(Event.ONCLICK);
 383 //              sinkEvents(Event.ONKEYDOWN);
 384                 sinkEvents(Event.ONDBLCLICK);
 385                 Pithos.preventIESelection();
 386         }
 387
 388         public List<File> getSelectedFiles() {
 389         return new ArrayList<File>(selectionModel.getSelectedSet());
 390         }
 391
 392         @Override
 393         public void onBrowserEvent(Event event) {
 394
 395 //              if (files == null || files.size() == 0) {
 396 //                      if (DOM.eventGetType(event) == Event.ONCONTEXTMENU && getSelectedFiles().size() == 0) {
 397 //                              contextMenu = new FileContextMenu(images, false, true);
 398 //                contextMenu.show();
 399 //                              event.preventDefault();
 400 //                              event.cancelBubble(true);
 401 //                      }
 402 //                      return;
 403 //              }
 404 //              if (DOM.eventGetType(event) == Event.ONCONTEXTMENU && getSelectedFiles().size() != 0) {
 405 //                      GWT.log("*****GOING TO SHOW CONTEXT MENU ****", null);
 406 //                      contextMenu =  new FileContextMenu(images, false, false);
 407 //                      contextMenu = contextMenu.onEvent(event);
 408 //                      event.cancelBubble(true);
 409 //                      event.preventDefault();
 410 //              } else if (DOM.eventGetType(event) == Event.ONCONTEXTMENU && getSelectedFiles().size() == 0) {
 411 //                      contextMenu = new FileContextMenu(images, false, true);
 412 //                      contextMenu = contextMenu.onEmptyEvent(event);
 413 //                      event.cancelBubble(true);
 414 //                      event.preventDefault();
 415 //              } else
 416                 if (DOM.eventGetType(event) == Event.ONDBLCLICK)
 417                         if (getSelectedFiles().size() == 1) {
 418                                 File file = getSelectedFiles().get(0);
 419                                 Window.open(app.getApiPath() + file.getOwner() + file.getUri(), "_blank", "");
 420                                 event.preventDefault();
 421                                 return;
 422                         }
 423                 super.onBrowserEvent(event);
 424         }
 425
 426         /**
 427          * Update the display of the file list.
 428          */
 429         void update() {
 430                 showCellTable();
 431         }
 432
 433         /**
 434          * Return the proper icon based on the MIME type of the file.
 435          *
 436          * @param file
 437          * @return the icon
 438          */
 439         protected ImageResource getFileIcon(File file) {
 440                 String mimetype = file.getContentType();
 441                 boolean published = file.isPublished();
 442                 if (mimetype == null)
 443                         return published ? images.documentShared() : images.document();
 444                 mimetype = mimetype.toLowerCase();
 445                 if (mimetype.startsWith("application/pdf"))
 446                         return published ? images.pdfShared() : images.pdf();
 447                 else if (mimetype.endsWith("excel"))
 448                         return published ? images.spreadsheetShared() : images.spreadsheet();
 449                 else if (mimetype.endsWith("msword"))
 450                         return published ? images.wordprocessorShared() : images.wordprocessor();
 451                 else if (mimetype.endsWith("powerpoint"))
 452                         return published ? images.presentationShared() : images.presentation();
 453                 else if (mimetype.startsWith("application/zip") ||
 454                                         mimetype.startsWith("application/gzip") ||
 455                                         mimetype.startsWith("application/x-gzip") ||
 456                                         mimetype.startsWith("application/x-tar") ||
 457                                         mimetype.startsWith("application/x-gtar"))
 458                         return published ? images.zipShared() : images.zip();
 459                 else if (mimetype.startsWith("text/html"))
 460                         return published ? images.htmlShared() : images.html();
 461                 else if (mimetype.startsWith("text/plain"))
 462                         return published ? images.txtShared() : images.txt();
 463                 else if (mimetype.startsWith("image/"))
 464                         return published ? images.imageShared() : images.image();
 465                 else if (mimetype.startsWith("video/"))
 466                         return published ? images.videoShared() : images.video();
 467                 else if (mimetype.startsWith("audio/"))
 468                         return published ? images.audioShared() : images.audio();
 469                 return published ? images.documentShared() : images.document();
 470         }
 471
 472         /**
 473          * Fill the file cache with data.
 474          */
 475         public void setFiles(final List<File> _files) {
 476                 files = new ArrayList<File>();
 477         for (File fres : _files) {
 478                         files.add(fres);
 479         }
 480
 481                 folderFileCount = files.size();
 482
 483                 for (SortableHeader header : allHeaders) {
 484                         if (header.isSorted())
 485                                 sortFiles(header.getProperty(), header.getReverseSort());
 486                 }
 487
 488                 List<File> previousSelection = getSelectedFiles(); //Keep the previous selection
 489
 490                 provider.getList().clear();
 491         provider.setList(files);
 492         selectionModel.clear();
 493         for (File f : files) {
 494                 if (previousSelection.contains(f))
 495                         selectionModel.setSelected(f, true);
 496         }
 497
 498         app.showFolderStatistics(folderFileCount);
 499         celltable.setPageSize(folderFileCount);
 500         }
 501
 502         /**
 503          * Does the list contains the requested filename
 504          *
 505          * @param fileName
 506          * @return true/false
 507          */
 508         public boolean contains(String fileName) {
 509                 for (int i = 0; i < files.size(); i++)
 510                         if (files.get(i).getName().equals(fileName))
 511                                 return true;
 512                 return false;
 513         }
 514
 515         public void clearSelectedRows() {
 516                 Iterator<File> it = selectionModel.getSelectedSet().iterator();
 517                 while(it.hasNext()){
 518                         selectionModel.setSelected(it.next(),false);
 519                 }
 520         }
 521
 522         /**
 523          *
 524          */
 525         public void selectAllRows() {
 526                 Iterator<File> it = provider.getList().iterator();
 527                 while(it.hasNext()){
 528                         selectionModel.setSelected(it.next(),true);
 529                 }
 530         }
 531
 532         protected void sortFiles(final String sortingProperty, final boolean sortingType){
 533                 Collections.sort(files, new Comparator<File>() {
 534
 535             @Override
 536             public int compare(File arg0, File arg1) {
 537                     if (sortingType){
 538                             if (sortingProperty.equals("version")) {
 539                                     return arg0.getVersion() - arg1.getVersion();
 540                             } else if (sortingProperty.equals("owner")) {
 541                                     return arg0.getOwner().compareTo(arg1.getOwner());
 542                             } else if (sortingProperty.equals("date")) {
 543                                         if (arg0.getLastModified() != null && arg1.getLastModified() != null)
 544                                                 return arg0.getLastModified().compareTo(arg1.getLastModified());
 545                                         return 0;
 546                             } else if (sortingProperty.equals("size")) {
 547                                     return (int) (arg0.getBytes() - arg1.getBytes());
 548                             } else if (sortingProperty.equals("name")) {
 549                                     return arg0.getName().compareTo(arg1.getName());
 550                             } else if (sortingProperty.equals("path")) {
 551                                     return arg0.getUri().compareTo(arg1.getUri());
 552                             } else {
 553                                     return arg0.getName().compareTo(arg1.getName());
 554                             }
 555                     }
 556                     else if (sortingProperty.equals("version")) {
 557
 558                             return arg1.getVersion() - arg0.getVersion();
 559                     } else if (sortingProperty.equals("owner")) {
 560
 561                             return arg1.getOwner().compareTo(arg0.getOwner());
 562                     } else if (sortingProperty.equals("date")) {
 563
 564                             return arg1.getLastModified().compareTo(arg0.getLastModified());
 565                     } else if (sortingProperty.equals("size")) {
 566                             return (int) (arg1.getBytes() - arg0.getBytes());
 567                     } else if (sortingProperty.equals("name")) {
 568
 569                             return arg1.getName().compareTo(arg0.getName());
 570                     } else if (sortingProperty.equals("path")) {
 571
 572                             return arg1.getUri().compareTo(arg0.getUri());
 573                     } else {
 574
 575                             return arg1.getName().compareTo(arg0.getName());
 576                     }
 577             }
 578
 579                 });
 580         }
 581
 582         final class FileValueUpdater implements ValueUpdater<String>{
 583                 private SortableHeader header;
 584                 /**
 585                  *
 586                  */
 587                 public FileValueUpdater(SortableHeader header) {
 588                         this.header=header;
 589                 }
 590                 @Override
 591                 public void update(String value) {
 592                         header.setSorted(true);
 593                         header.toggleReverseSort();
 594
 595                 for (SortableHeader otherHeader : allHeaders) {
 596                   if (otherHeader != header) {
 597                     otherHeader.setSorted(false);
 598                     otherHeader.setReverseSort(true);
 599                   }
 600                 }
 601                 celltable.redrawHeaders();
 602                 sortFiles(header.getProperty(), header.getReverseSort());
 603                 FileList.this.update();
 604                 }
 605
 606         }
 607
 608         /**
 609          * Shows the files in the cellTable
 610      */
 611         private void showCellTable(){
 612                 provider.setList(files);
 613
 614                 provider.refresh();
 615
 616                 //celltable.redraw();
 617                 celltable.redrawHeaders();
 618         }
 619
 620         void iterateFilesHeadCommand(final Iterator<File> iter, final Command callback) {
 621                 if (iter.hasNext()) {
 622                         File f = iter.next();
 623                         app.scheduleFileHeadCommand(f, new Command() {
 624
 625                                 @Override
 626                                 public void execute() {
 627                                         iterateFilesHeadCommand(iter, callback);
 628                                 }
 629                         });
 630                 }
 631                 else if (callback != null)
 632                         callback.execute();
 633         }
 634 }