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.safehtml.client.SafeHtmlTemplates;
  60 import com.google.gwt.safehtml.shared.SafeHtml;
  61 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
  62 import com.google.gwt.user.cellview.client.CellTable;
  63 import com.google.gwt.user.cellview.client.Column;
  64 import com.google.gwt.user.client.Command;
  65 import com.google.gwt.user.client.DOM;
  66 import com.google.gwt.user.client.Event;
  67 import com.google.gwt.user.client.Window;
  68 import com.google.gwt.user.client.ui.Composite;
  69 import com.google.gwt.user.client.ui.VerticalPanel;
  70 import com.google.gwt.view.client.ListDataProvider;
  71 import com.google.gwt.view.client.MultiSelectionModel;
  72 import com.google.gwt.view.client.ProvidesKey;
  73 import com.google.gwt.view.client.SelectionChangeEvent;
  74
  75 /**
  76  * A composite that displays the list of files in a particular folder.
  77  */
  78 public class FileList extends Composite {
  79
  80         ListDataProvider<File> provider = new ListDataProvider<File>();
  81
  82     /**
  83        * The styles applied to the table.
  84        */
  85     interface TableStyle extends CellTable.Style {
  86         String cellTableFirstColumnShared();
  87     }
  88
  89         interface TableResources extends CellTable.Resources {
  90             @Override
  91                 @Source({CellTable.Style.DEFAULT_CSS, "PithosCellTable.css"})
  92             TableStyle cellTableStyle();
  93         }
  94
  95         static interface Templates extends SafeHtmlTemplates {
  96             Templates INSTANCE = GWT.create(Templates.class);
  97
  98             @Template("<div id='dragHelper' style='border:1px solid black; background-color:#ffffff; color:black; width:150px;z-index:100'></div>")
  99             SafeHtml outerHelper();
 100
 101         @Template("<span id='{0}'>{0}</span>")
 102         public SafeHtml filenameSpan(String filename);
 103
 104         @Template("<a href='{0}' title='{1}' rel='lytebox[mnf]' onclick='myLytebox.start(this, false, false); return false;'>(view)</a>")
 105         public SafeHtml viewLink(String link, String title);
 106
 107         @Template("<table><tr><td rowspan='3'>{0}</td><td style='font-size:95%;' id='{1}'>{1}</td></tr><tr><td>{2}</td></tr></table>")
 108         public SafeHtml rendelContactCell(String imageHtml, String name, String fileSize);
 109
 110         @Template("<span id='{0}' class='{1}'>{2}</span>")
 111         public SafeHtml spanWithIdAndClass(String id, String cssClass, String content);
 112         }
 113
 114         protected final DateTimeFormat formatter = DateTimeFormat.getFormat("d/M/yyyy h:mm a");
 115
 116         /**
 117          * Specifies that the images available for this composite will be the ones
 118          * available in FileContextMenu.
 119          */
 120         public interface Images extends FolderTreeView.Images {
 121
 122                 @Source("gr/grnet/pithos/resources/blank.gif")
 123                 ImageResource blank();
 124
 125                 @Source("gr/grnet/pithos/resources/asc.png")
 126                 ImageResource asc();
 127
 128                 @Source("gr/grnet/pithos/resources/desc.png")
 129                 ImageResource desc();
 130
 131                 @Source("gr/grnet/pithos/resources/mimetypes/document_shared.png")
 132                 ImageResource documentShared();
 133
 134                 @Source("gr/grnet/pithos/resources/mimetypes/kcmfontinst.png")
 135                 ImageResource wordprocessor();
 136
 137                 @Source("gr/grnet/pithos/resources/mimetypes/log.png")
 138                 ImageResource spreadsheet();
 139
 140                 @Source("gr/grnet/pithos/resources/mimetypes/kpresenter_kpr.png")
 141                 ImageResource presentation();
 142
 143                 @Source("gr/grnet/pithos/resources/mimetypes/acroread.png")
 144                 ImageResource pdf();
 145
 146                 @Source("gr/grnet/pithos/resources/mimetypes/image.png")
 147                 ImageResource image();
 148
 149                 @Source("gr/grnet/pithos/resources/mimetypes/video2.png")
 150                 ImageResource video();
 151
 152                 @Source("gr/grnet/pithos/resources/mimetypes/knotify.png")
 153                 ImageResource audio();
 154
 155                 @Source("gr/grnet/pithos/resources/mimetypes/html.png")
 156                 ImageResource html();
 157
 158                 @Source("gr/grnet/pithos/resources/mimetypes/txt.png")
 159                 ImageResource txt();
 160
 161                 @Source("gr/grnet/pithos/resources/mimetypes/ark2.png")
 162                 ImageResource zip();
 163
 164                 @Source("gr/grnet/pithos/resources/mimetypes/kcmfontinst_shared.png")
 165                 ImageResource wordprocessorShared();
 166
 167                 @Source("gr/grnet/pithos/resources/mimetypes/log_shared.png")
 168                 ImageResource spreadsheetShared();
 169
 170                 @Source("gr/grnet/pithos/resources/mimetypes/kpresenter_kpr_shared.png")
 171                 ImageResource presentationShared();
 172
 173                 @Source("gr/grnet/pithos/resources/mimetypes/acroread_shared.png")
 174                 ImageResource pdfShared();
 175
 176                 @Source("gr/grnet/pithos/resources/mimetypes/image_shared.png")
 177                 ImageResource imageShared();
 178
 179                 @Source("gr/grnet/pithos/resources/mimetypes/video2_shared.png")
 180                 ImageResource videoShared();
 181
 182                 @Source("gr/grnet/pithos/resources/mimetypes/knotify_shared.png")
 183                 ImageResource audioShared();
 184
 185                 @Source("gr/grnet/pithos/resources/mimetypes/html_shared.png")
 186                 ImageResource htmlShared();
 187
 188                 @Source("gr/grnet/pithos/resources/mimetypes/txt_shared.png")
 189                 ImageResource txtShared();
 190
 191                 @Source("gr/grnet/pithos/resources/mimetypes/ark2_shared.png")
 192                 ImageResource zipShared();
 193
 194         }
 195
 196         /**
 197          * The number of files in this folder.
 198          */
 199         int folderFileCount;
 200
 201         /**
 202          * Total folder size
 203          */
 204         long folderTotalSize;
 205
 206         /**
 207          * A cache of the files in the list.
 208          */
 209         private List<File> files;
 210
 211         /**
 212          * The widget's image bundle.
 213          */
 214         protected final Images images;
 215
 216         protected CellTable<File> celltable;
 217
 218         private final MultiSelectionModel<File> selectionModel;
 219
 220         protected final List<SortableHeader> allHeaders = new ArrayList<SortableHeader>();
 221
 222         SortableHeader nameHeader;
 223
 224     FolderTreeView treeView;
 225
 226     protected Pithos app;
 227
 228     /**
 229          * Construct the file list widget. This entails setting up the widget
 230          * layout, fetching the number of files in the current folder from the
 231          * server and filling the local file cache of displayed files with data from
 232          * the server, as well.
 233          *
 234          * @param _images
 235          */
 236         public FileList(final Pithos _app, Images _images, FolderTreeView _treeView) {
 237         app = _app;
 238                 images = _images;
 239         this.treeView = _treeView;
 240
 241         final CellTable.Resources resources = GWT.create(TableResources.class);
 242
 243         ProvidesKey<File> keyProvider = new ProvidesKey<File>(){
 244
 245                         @Override
 246                         public Object getKey(File item) {
 247                                 return item.getUri();
 248                         }
 249                 };
 250
 251                 celltable = new CellTable<File>(10, resources, keyProvider);
 252         celltable.setWidth("100%");
 253         celltable.setStyleName("pithos-List");
 254
 255                 Column<File, ImageResource> status = new Column<File, ImageResource>(new ImageResourceCell() {
 256                     @Override
 257                 public boolean handlesSelection() {
 258                     return false;
 259                 }
 260                 })
 261         {
 262                  @Override
 263                  public ImageResource getValue(File entity) {
 264                      return getFileIcon(entity);
 265                  }
 266
 267                         @Override
 268                         public String getCellStyleNames(Context context, File object) {
 269                                 if (!object.getPermissions().isEmpty() && !object.isPublished())
 270                                         return ((TableStyle) resources.cellTableStyle()).cellTableFirstColumnShared();
 271                                 return super.getCellStyleNames(context, object);
 272                         }
 273             };
 274             celltable.addColumn(status,"");
 275
 276         final Column<File,SafeHtml> nameColumn = new Column<File,SafeHtml>(new SafeHtmlCell()) {
 277
 278                         @Override
 279                         public SafeHtml getValue(File object) {
 280                                 SafeHtmlBuilder sb = new SafeHtmlBuilder();
 281                 sb.append(Templates.INSTANCE.filenameSpan(object.getName()));
 282                                 if (object.getContentType() != null && (object.getContentType().endsWith("png") || object.getContentType().endsWith("gif") || object.getContentType().endsWith("jpeg"))) {
 283                                 sb.appendHtmlConstant("&nbsp;")
 284                       .append(Templates.INSTANCE.viewLink(app.getApiPath() + object.getOwner() + object.getUri(), object.getName()));
 285                                 }
 286
 287                                 return sb.toSafeHtml();
 288                         }
 289
 290                 };
 291         celltable.addColumn(nameColumn, nameHeader = new SortableHeader("Name"));
 292                 allHeaders.add(nameHeader);
 293                 nameHeader.setUpdater(new FileValueUpdater(nameHeader, "name"));
 294
 295                 celltable.redrawHeaders();
 296
 297         Column<File,String> aColumn = new Column<File,String>(new TextCell()) {
 298                         @Override
 299                         public String getValue(File object) {
 300                                 // TODO Auto-generated method stub
 301                                 return object.getSizeAsString();
 302                         }
 303                 };
 304         SortableHeader aheader = new SortableHeader("Size");
 305         celltable.addColumn(aColumn, aheader);
 306                 allHeaders.add(aheader);
 307                 aheader.setUpdater(new FileValueUpdater(aheader, "size"));
 308
 309         aColumn = new Column<File,String>(new TextCell()) {
 310                         @Override
 311                         public String getValue(File object) {
 312                                 return object.getLastModified() != null ? formatter.format(object.getLastModified()) : "";
 313                         }
 314                 };
 315         aheader = new SortableHeader("Last Modified");
 316                 celltable.addColumn(aColumn, aheader);
 317                 allHeaders.add(aheader);
 318                 aheader.setUpdater(new FileValueUpdater(aheader, "date"));
 319
 320                 provider.addDataDisplay(celltable);
 321
 322                 VerticalPanel vp = new VerticalPanel();
 323                 vp.setWidth("100%");
 324                 vp.addStyleName("pithos-FileListContainer");
 325
 326         vp.add(celltable);
 327
 328                 vp.setCellWidth(celltable, "100%");
 329         vp.addHandler(new ContextMenuHandler() {
 330             @Override
 331             public void onContextMenu(final ContextMenuEvent event) {
 332                 final TreeView tree = app.getSelectedTree();
 333                 if (tree != null && (tree.equals(app.getFolderTreeView()) || tree.equals(app.getOtherSharedTreeView()))) {
 334                         final int x = event.getNativeEvent().getClientX();
 335                         final int y = event.getNativeEvent().getClientY();
 336                         final Folder selectedFolder = app.getSelection();
 337                         app.scheduleFolderHeadCommand(selectedFolder, new Command() {
 338
 339                                                 @Override
 340                                                 public void execute() {
 341                                                         final List<File> selectedFiles = getSelectedFiles();
 342                                                         Iterator<File> iter = selectedFiles.iterator();
 343                                                         iterateFilesHeadCommand(iter, new Command() {
 344
 345                                                                 @Override
 346                                                                 public void execute() {
 347                                                         FileContextMenu contextMenu = new FileContextMenu(app, images, tree, selectedFolder, selectedFiles);
 348                                                         contextMenu.setPopupPosition(x, y);
 349                                                         contextMenu.show();
 350                                                                 }
 351                                                         });
 352                                                 }
 353                                         });
 354                 }
 355             }
 356         }, ContextMenuEvent.getType());
 357                 initWidget(vp);
 358
 359                 selectionModel = new MultiSelectionModel<File>(keyProvider);
 360                 selectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 361
 362                         @Override
 363                         public void onSelectionChange(SelectionChangeEvent event) {
 364                                 app.showRelevantToolbarButtons();
 365                         }
 366                 });
 367
 368                 celltable.setSelectionModel(selectionModel, PithosSelectionEventManager.<File> createDefaultManager());
 369 //              celltable.setPageSize(Pithos.VISIBLE_FILE_COUNT);
 370
 371                 sinkEvents(Event.ONCONTEXTMENU);
 372 //              sinkEvents(Event.ONMOUSEUP);
 373 //              sinkEvents(Event.ONMOUSEDOWN);
 374 //              sinkEvents(Event.ONCLICK);
 375 //              sinkEvents(Event.ONKEYDOWN);
 376                 sinkEvents(Event.ONDBLCLICK);
 377                 Pithos.preventIESelection();
 378         }
 379
 380         public List<File> getSelectedFiles() {
 381         return new ArrayList<File>(selectionModel.getSelectedSet());
 382         }
 383
 384         @Override
 385         public void onBrowserEvent(Event event) {
 386
 387 //              if (files == null || files.size() == 0) {
 388 //                      if (DOM.eventGetType(event) == Event.ONCONTEXTMENU && getSelectedFiles().size() == 0) {
 389 //                              contextMenu = new FileContextMenu(images, false, true);
 390 //                contextMenu.show();
 391 //                              event.preventDefault();
 392 //                              event.cancelBubble(true);
 393 //                      }
 394 //                      return;
 395 //              }
 396 //              if (DOM.eventGetType(event) == Event.ONCONTEXTMENU && getSelectedFiles().size() != 0) {
 397 //                      GWT.log("*****GOING TO SHOW CONTEXT MENU ****", null);
 398 //                      contextMenu =  new FileContextMenu(images, false, false);
 399 //                      contextMenu = contextMenu.onEvent(event);
 400 //                      event.cancelBubble(true);
 401 //                      event.preventDefault();
 402 //              } else if (DOM.eventGetType(event) == Event.ONCONTEXTMENU && getSelectedFiles().size() == 0) {
 403 //                      contextMenu = new FileContextMenu(images, false, true);
 404 //                      contextMenu = contextMenu.onEmptyEvent(event);
 405 //                      event.cancelBubble(true);
 406 //                      event.preventDefault();
 407 //              } else
 408                 if (DOM.eventGetType(event) == Event.ONDBLCLICK)
 409                         if (getSelectedFiles().size() == 1) {
 410                                 File file = getSelectedFiles().get(0);
 411                                 Window.open(app.getApiPath() + file.getOwner() + file.getUri(), "_blank", "");
 412                                 event.preventDefault();
 413                                 return;
 414                         }
 415                 super.onBrowserEvent(event);
 416         }
 417
 418         /**
 419          * Update the display of the file list.
 420          */
 421         void update() {
 422                 showCellTable();
 423         }
 424
 425         /**
 426          * Return the proper icon based on the MIME type of the file.
 427          *
 428          * @param file
 429          * @return the icon
 430          */
 431         protected ImageResource getFileIcon(File file) {
 432                 String mimetype = file.getContentType();
 433                 boolean published = file.isPublished();
 434                 if (mimetype == null)
 435                         return published ? images.documentShared() : images.document();
 436                 mimetype = mimetype.toLowerCase();
 437                 if (mimetype.startsWith("application/pdf"))
 438                         return published ? images.pdfShared() : images.pdf();
 439                 else if (mimetype.endsWith("excel"))
 440                         return published ? images.spreadsheetShared() : images.spreadsheet();
 441                 else if (mimetype.endsWith("msword"))
 442                         return published ? images.wordprocessorShared() : images.wordprocessor();
 443                 else if (mimetype.endsWith("powerpoint"))
 444                         return published ? images.presentationShared() : images.presentation();
 445                 else if (mimetype.startsWith("application/zip") ||
 446                                         mimetype.startsWith("application/gzip") ||
 447                                         mimetype.startsWith("application/x-gzip") ||
 448                                         mimetype.startsWith("application/x-tar") ||
 449                                         mimetype.startsWith("application/x-gtar"))
 450                         return published ? images.zipShared() : images.zip();
 451                 else if (mimetype.startsWith("text/html"))
 452                         return published ? images.htmlShared() : images.html();
 453                 else if (mimetype.startsWith("text/plain"))
 454                         return published ? images.txtShared() : images.txt();
 455                 else if (mimetype.startsWith("image/"))
 456                         return published ? images.imageShared() : images.image();
 457                 else if (mimetype.startsWith("video/"))
 458                         return published ? images.videoShared() : images.video();
 459                 else if (mimetype.startsWith("audio/"))
 460                         return published ? images.audioShared() : images.audio();
 461                 return published ? images.documentShared() : images.document();
 462         }
 463
 464         /**
 465          * Fill the file cache with data.
 466          */
 467         public void setFiles(final List<File> _files) {
 468                 files = new ArrayList<File>();
 469         for (File fres : _files) {
 470                         files.add(fres);
 471         }
 472
 473                 Collections.sort(files, new Comparator<File>() {
 474
 475                         @Override
 476                         public int compare(File arg0, File arg1) {
 477                                 return arg0.getName().compareTo(arg1.getName());
 478                         }
 479
 480                 });
 481                 folderFileCount = files.size();
 482
 483                 nameHeader.setSorted(true);
 484                 nameHeader.toggleReverseSort();
 485                 for (SortableHeader otherHeader : allHeaders) {
 486                 if (otherHeader != nameHeader) {
 487                     otherHeader.setSorted(false);
 488                     otherHeader.setReverseSort(true);
 489                 }
 490             }
 491
 492                 List<File> previousSelection = getSelectedFiles(); //Keep the previous selection
 493
 494                 provider.getList().clear();
 495         provider.setList(files);
 496         selectionModel.clear();
 497         for (File f : files) {
 498                 if (previousSelection.contains(f))
 499                         selectionModel.setSelected(f, true);
 500         }
 501
 502         app.showFolderStatistics(folderFileCount);
 503         celltable.setPageSize(folderFileCount);
 504         }
 505
 506         /**
 507          * Does the list contains the requested filename
 508          *
 509          * @param fileName
 510          * @return true/false
 511          */
 512         public boolean contains(String fileName) {
 513                 for (int i = 0; i < files.size(); i++)
 514                         if (files.get(i).getName().equals(fileName))
 515                                 return true;
 516                 return false;
 517         }
 518
 519         public void clearSelectedRows() {
 520                 Iterator<File> it = selectionModel.getSelectedSet().iterator();
 521                 while(it.hasNext()){
 522                         selectionModel.setSelected(it.next(),false);
 523                 }
 524         }
 525
 526         /**
 527          *
 528          */
 529         public void selectAllRows() {
 530                 Iterator<File> it = provider.getList().iterator();
 531                 while(it.hasNext()){
 532                         selectionModel.setSelected(it.next(),true);
 533                 }
 534         }
 535
 536         protected void sortFiles(final String sortingProperty, final boolean sortingType){
 537                 Collections.sort(files, new Comparator<File>() {
 538
 539             @Override
 540             public int compare(File arg0, File arg1) {
 541                     if (sortingType){
 542                             if (sortingProperty.equals("version")) {
 543                                     return arg0.getVersion() - arg1.getVersion();
 544                             } else if (sortingProperty.equals("owner")) {
 545                                     return arg0.getOwner().compareTo(arg1.getOwner());
 546                             } else if (sortingProperty.equals("date")) {
 547                                         if (arg0.getLastModified() != null && arg1.getLastModified() != null)
 548                                                 return arg0.getLastModified().compareTo(arg1.getLastModified());
 549                                         return 0;
 550                             } else if (sortingProperty.equals("size")) {
 551                                     return (int) (arg0.getBytes() - arg1.getBytes());
 552                             } else if (sortingProperty.equals("name")) {
 553                                     return arg0.getName().compareTo(arg1.getName());
 554                             } else if (sortingProperty.equals("path")) {
 555                                     return arg0.getUri().compareTo(arg1.getUri());
 556                             } else {
 557                                     return arg0.getName().compareTo(arg1.getName());
 558                             }
 559                     }
 560                     else if (sortingProperty.equals("version")) {
 561
 562                             return arg1.getVersion() - arg0.getVersion();
 563                     } else if (sortingProperty.equals("owner")) {
 564
 565                             return arg1.getOwner().compareTo(arg0.getOwner());
 566                     } else if (sortingProperty.equals("date")) {
 567
 568                             return arg1.getLastModified().compareTo(arg0.getLastModified());
 569                     } else if (sortingProperty.equals("size")) {
 570                             return (int) (arg1.getBytes() - arg0.getBytes());
 571                     } else if (sortingProperty.equals("name")) {
 572
 573                             return arg1.getName().compareTo(arg0.getName());
 574                     } else if (sortingProperty.equals("path")) {
 575
 576                             return arg1.getUri().compareTo(arg0.getUri());
 577                     } else {
 578
 579                             return arg1.getName().compareTo(arg0.getName());
 580                     }
 581             }
 582
 583                 });
 584         }
 585
 586         final class FileValueUpdater implements ValueUpdater<String>{
 587                 private String property;
 588                 private SortableHeader header;
 589                 /**
 590                  *
 591                  */
 592                 public FileValueUpdater(SortableHeader header,String property) {
 593                         this.property=property;
 594                         this.header=header;
 595                 }
 596                 @Override
 597                 public void update(String value) {
 598                         header.setSorted(true);
 599                         header.toggleReverseSort();
 600
 601                 for (SortableHeader otherHeader : allHeaders) {
 602                   if (otherHeader != header) {
 603                     otherHeader.setSorted(false);
 604                     otherHeader.setReverseSort(true);
 605                   }
 606                 }
 607                 celltable.redrawHeaders();
 608                 sortFiles(property, header.getReverseSort());
 609                 FileList.this.update();
 610                 }
 611
 612         }
 613
 614         /**
 615          * Shows the files in the cellTable
 616      */
 617         private void showCellTable(){
 618                 provider.setList(files);
 619
 620                 provider.refresh();
 621
 622                 //celltable.redraw();
 623                 celltable.redrawHeaders();
 624         }
 625
 626         void iterateFilesHeadCommand(final Iterator<File> iter, final Command callback) {
 627                 if (iter.hasNext()) {
 628                         File f = iter.next();
 629                         app.scheduleFileHeadCommand(f, new Command() {
 630
 631                                 @Override
 632                                 public void execute() {
 633                                         iterateFilesHeadCommand(iter, callback);
 634                                 }
 635                         });
 636                 }
 637                 else if (callback != null)
 638                         callback.execute();
 639         }
 640 }