code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/Pithos.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 package gr.grnet.pithos.web.client;
  36
  37 import gr.grnet.pithos.web.client.commands.UploadFileCommand;
  38 import gr.grnet.pithos.web.client.foldertree.AccountResource;
  39 import gr.grnet.pithos.web.client.foldertree.File;
  40 import gr.grnet.pithos.web.client.foldertree.Folder;
  41 import gr.grnet.pithos.web.client.foldertree.FolderTreeView;
  42 import gr.grnet.pithos.web.client.foldertree.FolderTreeViewModel;
  43 import gr.grnet.pithos.web.client.foldertree.Resource;
  44 import gr.grnet.pithos.web.client.grouptree.Group;
  45 import gr.grnet.pithos.web.client.grouptree.GroupTreeView;
  46 import gr.grnet.pithos.web.client.grouptree.GroupTreeViewModel;
  47 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView;
  48 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeViewModel;
  49 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView;
  50 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeViewModel;
  51 import gr.grnet.pithos.web.client.rest.DeleteRequest;
  52 import gr.grnet.pithos.web.client.rest.GetRequest;
  53 import gr.grnet.pithos.web.client.rest.HeadRequest;
  54 import gr.grnet.pithos.web.client.rest.PutRequest;
  55 import gr.grnet.pithos.web.client.rest.RestException;
  56
  57 import java.util.ArrayList;
  58 import java.util.HashMap;
  59 import java.util.Iterator;
  60 import java.util.List;
  61 import java.util.Set;
  62
  63 import com.google.gwt.core.client.EntryPoint;
  64 import com.google.gwt.core.client.GWT;
  65 import com.google.gwt.core.client.Scheduler;
  66 import com.google.gwt.core.client.Scheduler.RepeatingCommand;
  67 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  68 import com.google.gwt.event.dom.client.ClickEvent;
  69 import com.google.gwt.event.dom.client.ClickHandler;
  70 import com.google.gwt.event.logical.shared.ResizeEvent;
  71 import com.google.gwt.event.logical.shared.ResizeHandler;
  72 import com.google.gwt.http.client.Request;
  73 import com.google.gwt.http.client.RequestBuilder;
  74 import com.google.gwt.http.client.RequestCallback;
  75 import com.google.gwt.http.client.RequestException;
  76 import com.google.gwt.http.client.Response;
  77 import com.google.gwt.http.client.URL;
  78 import com.google.gwt.i18n.client.Dictionary;
  79 import com.google.gwt.i18n.client.NumberFormat;
  80 import com.google.gwt.json.client.JSONArray;
  81 import com.google.gwt.json.client.JSONObject;
  82 import com.google.gwt.json.client.JSONParser;
  83 import com.google.gwt.json.client.JSONString;
  84 import com.google.gwt.json.client.JSONValue;
  85 import com.google.gwt.resources.client.ImageResource;
  86 import com.google.gwt.resources.client.ImageResource.ImageOptions;
  87 import com.google.gwt.user.client.Command;
  88 import com.google.gwt.user.client.Cookies;
  89 import com.google.gwt.user.client.Event;
  90 import com.google.gwt.user.client.History;
  91 import com.google.gwt.user.client.Window;
  92 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  93 import com.google.gwt.user.client.ui.Button;
  94 import com.google.gwt.user.client.ui.Composite;
  95 import com.google.gwt.user.client.ui.HTML;
  96 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  97 import com.google.gwt.user.client.ui.HasVerticalAlignment;
  98 import com.google.gwt.user.client.ui.HorizontalPanel;
  99 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
 100 import com.google.gwt.user.client.ui.RootPanel;
 101 import com.google.gwt.user.client.ui.VerticalPanel;
 102 import com.google.gwt.view.client.SelectionChangeEvent;
 103 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
 104 import com.google.gwt.view.client.SingleSelectionModel;
 105
 106 /**
 107  * Entry point classes define <code>onModuleLoad()</code>.
 108  */
 109 public class Pithos implements EntryPoint, ResizeHandler {
 110
 111         public static final String HOME_CONTAINER = "pithos";
 112
 113         public static final String TRASH_CONTAINER = "trash";
 114
 115         public static final Configuration config = GWT.create(Configuration.class);
 116
 117         /**
 118          * Instantiate an application-level image bundle. This object will provide
 119          * programmatic access to all the images needed by widgets.
 120          */
 121         static Images images = (Images) GWT.create(Images.class);
 122
 123     public String getUsername() {
 124         return username;
 125     }
 126
 127     public void setAccount(AccountResource acct) {
 128         account = acct;
 129     }
 130
 131     public AccountResource getAccount() {
 132         return account;
 133     }
 134
 135     public void updateFolder(Folder f, boolean showfiles, Command callback, final boolean openParent) {
 136         folderTreeView.updateFolder(f, showfiles, callback, openParent);
 137     }
 138
 139     public void updateGroupNode(Group group) {
 140         groupTreeView.updateGroupNode(group);
 141     }
 142
 143     public void updateMySharedRoot() {
 144         mysharedTreeView.updateRoot();
 145     }
 146
 147     public void updateSharedFolder(Folder f, boolean showfiles) {
 148         mysharedTreeView.updateFolder(f, showfiles);
 149     }
 150
 151     public void updateOtherSharedFolder(Folder f, boolean showfiles) {
 152         otherSharedTreeView.updateFolder(f, showfiles);
 153     }
 154
 155     public MysharedTreeView getMySharedTreeView() {
 156         return mysharedTreeView;
 157     }
 158
 159     /**
 160          * An aggregate image bundle that pulls together all the images for this
 161          * application into a single bundle.
 162          */
 163         public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 164
 165                 @Source("gr/grnet/pithos/resources/document.png")
 166                 ImageResource folders();
 167
 168                 @Source("gr/grnet/pithos/resources/advancedsettings.png")
 169                 @ImageOptions(width=32, height=32)
 170                 ImageResource tools();
 171         }
 172
 173         private Throwable error;
 174
 175         /**
 176          * The Application Clipboard implementation;
 177          */
 178         private Clipboard clipboard = new Clipboard();
 179
 180         /**
 181          * The top panel that contains the menu bar.
 182          */
 183         private TopPanel topPanel;
 184
 185         /**
 186          * The panel that contains the various system messages.
 187          */
 188         private MessagePanel messagePanel = new MessagePanel(this, Pithos.images);
 189
 190         /**
 191          * The bottom panel that contains the status bar.
 192          */
 193         private StatusPanel statusPanel = null;
 194
 195         /**
 196          * The file list widget.
 197          */
 198         private FileList fileList;
 199
 200         /**
 201          * The tab panel that occupies the right side of the screen.
 202          */
 203         private VerticalPanel inner = new VerticalPanel();
 204
 205
 206         /**
 207          * The split panel that will contain the left and right panels.
 208          */
 209         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 210
 211         /**
 212          * The currently selected item in the application, for use by the Edit menu
 213          * commands. Potential types are Folder, File, User and Group.
 214          */
 215         private Object currentSelection;
 216
 217         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 218
 219     private String username = null;
 220
 221     /**
 222      * The authentication token of the current user.
 223      */
 224     private String token;
 225
 226     VerticalPanel trees;
 227
 228     SingleSelectionModel<Folder> folderTreeSelectionModel;
 229     FolderTreeViewModel folderTreeViewModel;
 230     FolderTreeView folderTreeView;
 231
 232     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 233     MysharedTreeViewModel mysharedTreeViewModel;
 234     MysharedTreeView mysharedTreeView = null;;
 235
 236     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 237     OtherSharedTreeViewModel otherSharedTreeViewModel;
 238     OtherSharedTreeView otherSharedTreeView = null;
 239
 240     GroupTreeViewModel groupTreeViewModel;
 241     GroupTreeView groupTreeView;
 242
 243     TreeView selectedTree;
 244     protected AccountResource account;
 245
 246     Folder trash;
 247
 248     List<Composite> treeViews = new ArrayList<Composite>();
 249
 250     @SuppressWarnings("rawtypes") List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 251
 252     Button upload;
 253
 254     private HTML numOfFiles;
 255
 256     private Toolbar toolbar;
 257
 258     private FileUploadDialog fileUploadDialog;
 259
 260         @Override
 261         public void onModuleLoad() {
 262                 if (parseUserCredentials())
 263             initialize();
 264         }
 265
 266     private void initialize() {
 267         boolean bareContent = Window.Location.getParameter("noframe") != null;
 268         String contentWidth = bareContent ? "100%" : "75%";
 269
 270         VerticalPanel outer = new VerticalPanel();
 271         outer.setWidth("100%");
 272         if (!bareContent) {
 273                 outer.addStyleName("pithos-outer");
 274         }
 275
 276         if (!bareContent) {
 277                 topPanel = new TopPanel(this, Pithos.images);
 278                 topPanel.setWidth("100%");
 279                 outer.add(topPanel);
 280                 outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 281         }
 282
 283         messagePanel.setVisible(false);
 284         outer.add(messagePanel);
 285         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 286         outer.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
 287
 288         HorizontalPanel header = new HorizontalPanel();
 289         header.addStyleName("pithos-header");
 290         header.setWidth(contentWidth);
 291         if (bareContent)
 292                 header.addStyleName("pithos-header-noframe");
 293         upload = new Button("Upload", new ClickHandler() {
 294             @Override
 295             public void onClick(ClickEvent event) {
 296                 if (getSelection() != null)
 297                         new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 298             }
 299         });
 300         upload.addStyleName("pithos-uploadButton");
 301         header.add(upload);
 302         header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 303         header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 304
 305         toolbar = new Toolbar(this);
 306         header.add(toolbar);
 307         header.setCellHorizontalAlignment(toolbar, HasHorizontalAlignment.ALIGN_CENTER);
 308         header.setCellVerticalAlignment(toolbar, HasVerticalAlignment.ALIGN_MIDDLE);
 309
 310         HorizontalPanel folderStatistics = new HorizontalPanel();
 311         folderStatistics.addStyleName("pithos-folderStatistics");
 312         numOfFiles = new HTML();
 313         folderStatistics.add(numOfFiles);
 314         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 315         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 316         folderStatistics.add(numOfFilesLabel);
 317         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 318         header.add(folderStatistics);
 319         header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 320         header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
 321         header.setCellWidth(folderStatistics, "40px");
 322         outer.add(header);
 323         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 324         // Inner contains the various lists.nner
 325         inner.sinkEvents(Event.ONCONTEXTMENU);
 326         inner.setWidth("100%");
 327
 328         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 329         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 330             @Override
 331             public void onSelectionChange(SelectionChangeEvent event) {
 332                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 333                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 334                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 335                     Folder f = folderTreeSelectionModel.getSelectedObject();
 336                         updateFolder(f, true, new Command() {
 337
 338                                 @Override
 339                                 public void execute() {
 340                                         updateStatistics();
 341                                 }
 342                         }, true);
 343                         showRelevantToolbarButtons();
 344                 }
 345                                 else {
 346                                         if (getSelectedTree().equals(folderTreeView))
 347                                                 setSelectedTree(null);
 348                                         if (getSelectedTree() == null)
 349                                                 showRelevantToolbarButtons();
 350                                 }
 351             }
 352         });
 353         selectionModels.add(folderTreeSelectionModel);
 354
 355         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 356         folderTreeView = new FolderTreeView(folderTreeViewModel);
 357         treeViews.add(folderTreeView);
 358
 359         fileList = new FileList(this, images);
 360         inner.add(fileList);
 361
 362         trees = new VerticalPanel();
 363         trees.setWidth("100%");
 364
 365         trees.add(folderTreeView);
 366
 367         // Add the left and right panels to the split panel.
 368         splitPanel.setLeftWidget(trees);
 369         splitPanel.setRightWidget(inner);
 370         splitPanel.setSplitPosition("219px");
 371         splitPanel.setSize("100%", "100%");
 372         splitPanel.addStyleName("pithos-splitPanel");
 373         splitPanel.setWidth(contentWidth);
 374         outer.add(splitPanel);
 375         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 376
 377         if (!bareContent) {
 378                 statusPanel = new StatusPanel();
 379                 statusPanel.setWidth("100%");
 380                 outer.add(statusPanel);
 381                 outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 382         }
 383         else
 384                 splitPanel.addStyleName("pithos-splitPanel-noframe");
 385
 386         // Hook the window resize event, so that we can adjust the UI.
 387         Window.addResizeHandler(this);
 388         // Clear out the window's built-in margin, because we want to take
 389         // advantage of the entire client area.
 390         Window.setMargin("0px");
 391         // Finally, add the outer panel to the RootPanel, so that it will be
 392         // displayed.
 393         RootPanel.get().add(outer);
 394         // Call the window resized handler to get the initial sizes setup. Doing
 395         // this in a deferred command causes it to occur after all widgets'
 396         // sizes have been computed by the browser.
 397         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 398
 399             @Override
 400             public void execute() {
 401                 onWindowResized(Window.getClientHeight());
 402             }
 403         });
 404
 405         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 406             @Override
 407             public void execute() {
 408                 fetchAccount(new Command() {
 409
 410                                         @Override
 411                                         public void execute() {
 412                                 if (!account.hasHomeContainer())
 413                                     createHomeContainer(account, this);
 414                                 else if (!account.hasTrashContainer())
 415                                         createTrashContainer(this);
 416                                 else {
 417                                         for (Folder f : account.getContainers())
 418                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 419                                                         trash = f;
 420                                                         break;
 421                                                 }
 422                                     folderTreeViewModel.initialize(account, new Command() {
 423
 424                                                                 @Override
 425                                                                 public void execute() {
 426                                                     createMySharedTree();
 427                                                                 }
 428                                                         });
 429
 430                                     HorizontalPanel separator = new HorizontalPanel();
 431                                     separator.addStyleName("pithos-statisticsSeparator");
 432                                     separator.add(new HTML(""));
 433                                     trees.add(separator);
 434
 435                                     groupTreeViewModel = new GroupTreeViewModel(Pithos.this);
 436                                     groupTreeView = new GroupTreeView(groupTreeViewModel);
 437                                     treeViews.add(groupTreeView);
 438                                     trees.add(groupTreeView);
 439                                     folderTreeView.showStatistics(account);
 440                                 }
 441                                         }
 442                                 });
 443             }
 444         });
 445
 446         Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
 447
 448                         @Override
 449                         public boolean execute() {
 450                                 Folder f = getSelection();
 451                                 if (f != null) {
 452                                         if (getSelectedTree().equals(folderTreeView))
 453                                                 updateFolder(f, true, null, false);
 454                                         else if (getSelectedTree().equals(mysharedTreeView))
 455                                                 updateSharedFolder(f, true);
 456                                 }
 457                                 return true;
 458                         }
 459                 }, 3000);
 460     }
 461
 462     public void applyPermissions(Folder f) {
 463         if (f != null) {
 464                 if (f.isInTrash())
 465                         upload.setEnabled(false);
 466                 else {
 467                         Boolean[] perms = f.getPermissions().get(username);
 468                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 469                                 upload.setEnabled(true);
 470                         }
 471                         else
 472                                 upload.setEnabled(false);
 473                 }
 474         }
 475         else
 476                 upload.setEnabled(false);
 477         }
 478
 479         @SuppressWarnings({ "rawtypes", "unchecked" })
 480         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 481         selectedTree = _selectedTree;
 482
 483         for (Composite c : treeViews)
 484                 if (c.equals(selectedTree))
 485                         c.addStyleName("cellTreeWidget-selectedTree");
 486                 else
 487                         c.removeStyleName("cellTreeWidget-selectedTree");
 488
 489         for (SingleSelectionModel s : selectionModels)
 490             if (!s.equals(model) && s.getSelectedObject() != null)
 491                 s.setSelected(s.getSelectedObject(), false);
 492     }
 493
 494     public void showFiles(final Folder f) {
 495         Set<File> files = f.getFiles();
 496         showFiles(files);
 497     }
 498
 499     public void showFiles(Set<File> files) {
 500         fileList.setFiles(new ArrayList<File>(files));
 501     }
 502
 503     /**
 504          * Parse and store the user credentials to the appropriate fields.
 505          */
 506         private boolean parseUserCredentials() {
 507         Configuration conf = (Configuration) GWT.create(Configuration.class);
 508                 Dictionary otherProperties = Dictionary.getDictionary("otherProperties");
 509         String cookie = otherProperties.get("authCookie");
 510         String auth = Cookies.getCookie(cookie);
 511         if (auth == null) {
 512             authenticateUser();
 513             return false;
 514         }
 515         if (auth.startsWith("\""))
 516                 auth = auth.substring(1);
 517         if (auth.endsWith("\""))
 518                 auth = auth.substring(0, auth.length() - 1);
 519                 String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 520                 if (authSplit.length != 2) {
 521                     authenticateUser();
 522                     return false;
 523                 }
 524                 username = authSplit[0];
 525                 token = authSplit[1];
 526
 527         String gotoUrl = Window.Location.getParameter("goto");
 528                 if (gotoUrl != null && gotoUrl.length() > 0) {
 529                         Window.Location.assign(gotoUrl);
 530                         return false;
 531                 }
 532                 return true;
 533     }
 534
 535     /**
 536          * Redirect the user to the login page for authentication.
 537          */
 538         protected void authenticateUser() {
 539                 Dictionary otherProperties = Dictionary.getDictionary("otherProperties");
 540         Window.Location.assign(otherProperties.get("loginUrl") + Window.Location.getHref());
 541         }
 542
 543         protected void fetchAccount(final Command callback) {
 544         String path = "?format=json";
 545
 546         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 547             @Override
 548             public void onSuccess(AccountResource _result) {
 549                 account = _result;
 550                 if (callback != null)
 551                         callback.execute();
 552             }
 553
 554             @Override
 555             public void onError(Throwable t) {
 556                 GWT.log("Error getting account", t);
 557                                 setError(t);
 558                 if (t instanceof RestException)
 559                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 560                 else
 561                     displayError("System error fetching user data: " + t.getMessage());
 562             }
 563
 564                         @Override
 565                         protected void onUnauthorized(Response response) {
 566                                 sessionExpired();
 567                         }
 568         };
 569         getAccount.setHeader("X-Auth-Token", token);
 570         Scheduler.get().scheduleDeferred(getAccount);
 571     }
 572
 573     public void updateStatistics() {
 574         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 575
 576                         @Override
 577                         public void onSuccess(AccountResource _result) {
 578                                 folderTreeView.showStatistics(account);
 579                         }
 580
 581                         @Override
 582                         public void onError(Throwable t) {
 583                 GWT.log("Error getting account", t);
 584                                 setError(t);
 585                 if (t instanceof RestException)
 586                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 587                 else
 588                     displayError("System error fetching user data: " + t.getMessage());
 589                         }
 590
 591                         @Override
 592                         protected void onUnauthorized(Response response) {
 593                                 sessionExpired();
 594                         }
 595                 };
 596                 headAccount.setHeader("X-Auth-Token", token);
 597                 Scheduler.get().scheduleDeferred(headAccount);
 598         }
 599
 600         protected void createHomeContainer(final AccountResource _account, final Command callback) {
 601         String path = "/" + Pithos.HOME_CONTAINER;
 602         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 603             @Override
 604             public void onSuccess(Resource result) {
 605                 if (!_account.hasTrashContainer())
 606                         createTrashContainer(callback);
 607                 else
 608                         fetchAccount(callback);
 609             }
 610
 611             @Override
 612             public void onError(Throwable t) {
 613                 GWT.log("Error creating pithos", t);
 614                                 setError(t);
 615                 if (t instanceof RestException)
 616                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 617                 else
 618                     displayError("System error Error creating pithos: " + t.getMessage());
 619             }
 620
 621                         @Override
 622                         protected void onUnauthorized(Response response) {
 623                                 sessionExpired();
 624                         }
 625         };
 626         createPithos.setHeader("X-Auth-Token", getToken());
 627         Scheduler.get().scheduleDeferred(createPithos);
 628     }
 629
 630     protected void createTrashContainer(final Command callback) {
 631         String path = "/" + Pithos.TRASH_CONTAINER;
 632         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 633             @Override
 634             public void onSuccess(Resource result) {
 635                         fetchAccount(callback);
 636             }
 637
 638             @Override
 639             public void onError(Throwable t) {
 640                 GWT.log("Error creating pithos", t);
 641                                 setError(t);
 642                 if (t instanceof RestException)
 643                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 644                 else
 645                     displayError("System error Error creating pithos: " + t.getMessage());
 646             }
 647
 648                         @Override
 649                         protected void onUnauthorized(Response response) {
 650                                 sessionExpired();
 651                         }
 652         };
 653         createPithos.setHeader("X-Auth-Token", getToken());
 654         Scheduler.get().scheduleDeferred(createPithos);
 655     }
 656
 657     /**
 658          * Creates an HTML fragment that places an image & caption together, for use
 659          * in a group header.
 660          *
 661          * @param imageProto an image prototype for an image
 662          * @param caption the group caption
 663          * @return the header HTML fragment
 664          */
 665         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 666                 String captionHTML = "<table class='caption' cellpadding='0' "
 667                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 668                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 669                 + caption + "</b></td></tr></table>";
 670                 return captionHTML;
 671         }
 672
 673         protected void onWindowResized(int height) {
 674                 // Adjust the split panel to take up the available room in the window.
 675                 int newHeight = height - splitPanel.getAbsoluteTop();
 676                 if (newHeight < 1)
 677                         newHeight = 1;
 678                 splitPanel.setHeight("" + newHeight);
 679                 inner.setHeight("" + newHeight);
 680         }
 681
 682         @Override
 683         public void onResize(ResizeEvent event) {
 684                 int height = event.getHeight();
 685                 onWindowResized(height);
 686         }
 687
 688         /**
 689          * Display an error message.
 690          *
 691          * @param msg the message to display
 692          */
 693         public void displayError(String msg) {
 694                 messagePanel.displayError(msg);
 695         }
 696
 697         /**
 698          * Display a warning message.
 699          *
 700          * @param msg the message to display
 701          */
 702         public void displayWarning(String msg) {
 703                 messagePanel.displayWarning(msg);
 704         }
 705
 706         /**
 707          * Display an informational message.
 708          *
 709          * @param msg the message to display
 710          */
 711         public void displayInformation(String msg) {
 712                 messagePanel.displayInformation(msg);
 713         }
 714
 715         /**
 716          * Retrieve the fileList.
 717          *
 718          * @return the fileList
 719          */
 720         public FileList getFileList() {
 721                 return fileList;
 722         }
 723
 724         /**
 725          * Retrieve the topPanel.
 726          *
 727          * @return the topPanel
 728          */
 729         TopPanel getTopPanel() {
 730                 return topPanel;
 731         }
 732
 733         /**
 734          * Retrieve the clipboard.
 735          *
 736          * @return the clipboard
 737          */
 738         public Clipboard getClipboard() {
 739                 return clipboard;
 740         }
 741
 742         public StatusPanel getStatusPanel() {
 743                 return statusPanel;
 744         }
 745
 746         public String getToken() {
 747                 return token;
 748         }
 749
 750         public static native void preventIESelection() /*-{
 751                 $doc.body.onselectstart = function () { return false; };
 752         }-*/;
 753
 754         public static native void enableIESelection() /*-{
 755                 if ($doc.body.onselectstart != null)
 756                 $doc.body.onselectstart = null;
 757         }-*/;
 758
 759         /**
 760          * @return the absolute path of the API root URL
 761          */
 762         public String getApiPath() {
 763                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 764                 return conf.apiPath();
 765         }
 766
 767         /**
 768          * History support for folder navigation
 769          * adds a new browser history entry
 770          *
 771          * @param key
 772          */
 773         public void updateHistory(String key){
 774 //              Replace any whitespace of the initial string to "+"
 775 //              String result = key.replaceAll("\\s","+");
 776 //              Add a new browser history entry.
 777 //              History.newItem(result);
 778                 History.newItem(key);
 779         }
 780
 781     public void deleteFolder(final Folder folder, final Command callback) {
 782         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(folder.getPrefix()) + "&t=" + System.currentTimeMillis();
 783         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 784         builder.setHeader("X-Auth-Token", getToken());
 785         try {
 786             builder.sendRequest("", new RequestCallback() {
 787                 @Override
 788                 public void onResponseReceived(Request request, Response response) {
 789                     if (response.getStatusCode() == Response.SC_OK) {
 790                         JSONValue json = JSONParser.parseStrict(response.getText());
 791                         JSONArray array = json.isArray();
 792                         int i = 0;
 793                         if (array != null) {
 794                             deleteObject(folder, i, array, callback);
 795                         }
 796                     }
 797                 }
 798
 799                 @Override
 800                 public void onError(Request request, Throwable exception) {
 801                         setError(exception);
 802                     displayError("System error unable to delete folder: " + exception.getMessage());
 803                 }
 804             });
 805         }
 806         catch (RequestException e) {
 807         }
 808     }
 809
 810     void deleteObject(final Folder folder, final int i, final JSONArray array, final Command callback) {
 811         if (i < array.size()) {
 812             JSONObject o = array.get(i).isObject();
 813             if (o != null && !o.containsKey("subdir")) {
 814                 JSONString name = o.get("name").isString();
 815                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 816                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), URL.encode(path)) {
 817                     @Override
 818                     public void onSuccess(Resource result) {
 819                         deleteObject(folder, i + 1, array, callback);
 820                     }
 821
 822                     @Override
 823                     public void onError(Throwable t) {
 824                         GWT.log("", t);
 825                                                 setError(t);
 826                         displayError("System error unable to delete folder: " + t.getMessage());
 827                     }
 828
 829                                 @Override
 830                                 protected void onUnauthorized(Response response) {
 831                                         sessionExpired();
 832                                 }
 833                 };
 834                 delete.setHeader("X-Auth-Token", getToken());
 835                 Scheduler.get().scheduleDeferred(delete);
 836             }
 837             else if (o != null) {
 838                 String subdir = o.get("subdir").isString().stringValue();
 839                 subdir = subdir.substring(0, subdir.length() - 1);
 840                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(subdir) + "&t=" + System.currentTimeMillis();
 841                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 842                 builder.setHeader("X-Auth-Token", getToken());
 843                 try {
 844                     builder.sendRequest("", new RequestCallback() {
 845                         @Override
 846                         public void onResponseReceived(Request request, Response response) {
 847                             if (response.getStatusCode() == Response.SC_OK) {
 848                                 JSONValue json = JSONParser.parseStrict(response.getText());
 849                                 JSONArray array2 = json.isArray();
 850                                 if (array2 != null) {
 851                                     int l = array.size();
 852                                     for (int j=0; j<array2.size(); j++) {
 853                                         array.set(l++, array2.get(j));
 854                                     }
 855                                 }
 856                                 deleteObject(folder, i + 1, array, callback);
 857                             }
 858                         }
 859
 860                         @Override
 861                         public void onError(Request request, Throwable exception) {
 862                                 setError(exception);
 863                             displayError("System error unable to delete folder: " + exception.getMessage());
 864                         }
 865                     });
 866                 }
 867                 catch (RequestException e) {
 868                 }
 869             }
 870         }
 871         else {
 872             String path = folder.getUri();
 873             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), URL.encode(path)) {
 874                 @Override
 875                 public void onSuccess(Resource result) {
 876                     updateFolder(folder.getParent(), true, new Command() {
 877
 878                                                 @Override
 879                                                 public void execute() {
 880                                                         folderTreeSelectionModel.setSelected(folder.getParent(), true);
 881                                                         updateStatistics();
 882                                                         if (callback != null)
 883                                                                 callback.execute();
 884                                                 }
 885                                         }, true);
 886                 }
 887
 888                 @Override
 889                 public void onError(Throwable t) {
 890                     GWT.log("", t);
 891                                         setError(t);
 892                     if (t instanceof RestException) {
 893                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 894                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 895                         else
 896                                 onSuccess(null);
 897                     }
 898                     else
 899                         displayError("System error unable to delete folder: " + t.getMessage());
 900                 }
 901
 902                                 @Override
 903                                 protected void onUnauthorized(Response response) {
 904                                         sessionExpired();
 905                                 }
 906             };
 907             deleteFolder.setHeader("X-Auth-Token", getToken());
 908             Scheduler.get().scheduleDeferred(deleteFolder);
 909         }
 910     }
 911
 912     public FolderTreeView getFolderTreeView() {
 913         return folderTreeView;
 914     }
 915
 916     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 917         if (iter.hasNext()) {
 918             File file = iter.next();
 919             String path = targetUri + "/" + file.getName();
 920             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 921                 @Override
 922                 public void onSuccess(Resource result) {
 923                     copyFiles(iter, targetUsername, targetUri, callback);
 924                 }
 925
 926                 @Override
 927                 public void onError(Throwable t) {
 928                     GWT.log("", t);
 929                                         setError(t);
 930                     if (t instanceof RestException) {
 931                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 932                     }
 933                     else
 934                         displayError("System error unable to copy file: "+t.getMessage());
 935                 }
 936
 937                                 @Override
 938                                 protected void onUnauthorized(Response response) {
 939                                         sessionExpired();
 940                                 }
 941             };
 942             copyFile.setHeader("X-Auth-Token", getToken());
 943             copyFile.setHeader("X-Copy-From", URL.encodePathSegment(file.getUri()));
 944             if (!file.getOwner().equals(targetUsername))
 945                 copyFile.setHeader("X-Source-Account", URL.encodePathSegment(file.getOwner()));
 946             copyFile.setHeader("Content-Type", file.getContentType());
 947             Scheduler.get().scheduleDeferred(copyFile);
 948         }
 949         else  if (callback != null) {
 950             callback.execute();
 951         }
 952     }
 953
 954     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
 955         if (iter.hasNext()) {
 956             final Folder f = iter.next();
 957             copyFolder(f, targetUsername, targetUri, new Command() {
 958
 959                                 @Override
 960                                 public void execute() {
 961                                         copySubfolders(iter, targetUsername, targetUri, callback);
 962                                 }
 963                         });
 964         }
 965         else  if (callback != null) {
 966             callback.execute();
 967         }
 968     }
 969
 970     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
 971         String path = targetUri + "/" + f.getName();
 972         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
 973             @Override
 974             public void onSuccess(Resource result) {
 975                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix()), f) {
 976
 977                                         @Override
 978                                         public void onSuccess(final Folder _f) {
 979                                 Iterator<File> iter = _f.getFiles().iterator();
 980                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
 981                                     @Override
 982                                     public void execute() {
 983                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
 984                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
 985                                     }
 986                                 });
 987                                         }
 988
 989                                         @Override
 990                                         public void onError(Throwable t) {
 991                                 GWT.log("", t);
 992                                                 setError(t);
 993                                 if (t instanceof RestException) {
 994                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
 995                                 }
 996                                 else
 997                                     displayError("System error getting folder: " + t.getMessage());
 998                                         }
 999
1000                                         @Override
1001                                         protected void onUnauthorized(Response response) {
1002                                                 sessionExpired();
1003                                         }
1004                                 };
1005                                 getFolder.setHeader("X-Auth-Token", getToken());
1006                                 Scheduler.get().scheduleDeferred(getFolder);
1007             }
1008
1009             @Override
1010             public void onError(Throwable t) {
1011                 GWT.log("", t);
1012                                 setError(t);
1013                if (t instanceof RestException) {
1014                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
1015                 }
1016                 else
1017                     displayError("System error creating folder: " + t.getMessage());
1018             }
1019
1020                         @Override
1021                         protected void onUnauthorized(Response response) {
1022                                 sessionExpired();
1023                         }
1024         };
1025         createFolder.setHeader("X-Auth-Token", getToken());
1026         createFolder.setHeader("Accept", "*/*");
1027         createFolder.setHeader("Content-Length", "0");
1028         createFolder.setHeader("Content-Type", "application/folder");
1029         Scheduler.get().scheduleDeferred(createFolder);
1030     }
1031
1032     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1033         selectionModels.add(model);
1034     }
1035
1036         public OtherSharedTreeView getOtherSharedTreeView() {
1037                 return otherSharedTreeView;
1038         }
1039
1040         public void updateTrash(boolean showFiles, Command callback) {
1041                 updateFolder(trash, showFiles, callback, true);
1042         }
1043
1044         public void updateGroupsNode() {
1045                 groupTreeView.updateGroupNode(null);
1046         }
1047
1048         public void addGroup(String groupname) {
1049                 Group newGroup = new Group(groupname);
1050                 account.addGroup(newGroup);
1051                 groupTreeView.updateGroupNode(null);
1052         }
1053
1054         public void removeGroup(Group group) {
1055                 account.removeGroup(group);
1056                 updateGroupsNode();
1057         }
1058
1059         public TreeView getSelectedTree() {
1060                 return selectedTree;
1061         }
1062
1063         public void setSelectedTree(TreeView selected) {
1064                 selectedTree = selected;
1065         }
1066
1067         public Folder getSelection() {
1068                 if (selectedTree != null)
1069                         return selectedTree.getSelection();
1070                 return null;
1071         }
1072
1073         public void showFolderStatistics(int folderFileCount) {
1074                 numOfFiles.setHTML(String.valueOf(folderFileCount));
1075         }
1076
1077         public GroupTreeView getGroupTreeView() {
1078                 return groupTreeView;
1079         }
1080
1081         public void sessionExpired() {
1082                 new SessionExpiredDialog(this).center();
1083         }
1084
1085         public void updateRootFolder(Command callback) {
1086                 updateFolder(account.getPithos(), false, callback, true);
1087         }
1088
1089         void createMySharedTree() {
1090                 mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1091                 mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1092                     @Override
1093                     public void onSelectionChange(SelectionChangeEvent event) {
1094                         if (mysharedTreeSelectionModel.getSelectedObject() != null) {
1095                             deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1096                             upload.setEnabled(false);
1097                             updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1098                                         showRelevantToolbarButtons();
1099                         }
1100                                 else {
1101                                         if (getSelectedTree().equals(mysharedTreeView))
1102                                                 setSelectedTree(null);
1103                                         if (getSelectedTree() == null)
1104                                                 showRelevantToolbarButtons();
1105                                 }
1106                     }
1107                 });
1108                 selectionModels.add(mysharedTreeSelectionModel);
1109                 mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1110                 mysharedTreeViewModel.initialize(new Command() {
1111
1112                         @Override
1113                         public void execute() {
1114                             mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1115                                 trees.insert(mysharedTreeView, 2);
1116                                 treeViews.add(mysharedTreeView);
1117                                 createOtherSharedTree();
1118                         }
1119                 });
1120         }
1121
1122         void createOtherSharedTree() {
1123                 otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1124                 otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1125                     @Override
1126                     public void onSelectionChange(SelectionChangeEvent event) {
1127                         if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
1128                             deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1129                             otherSharedTreeView.addStyleName("cellTreeWidget-selectedTree");
1130                             applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1131                             updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
1132                                         showRelevantToolbarButtons();
1133                         }
1134                                 else {
1135                                         if (getSelectedTree().equals(otherSharedTreeView))
1136                                                 setSelectedTree(null);
1137                                         if (getSelectedTree() == null)
1138                                                 showRelevantToolbarButtons();
1139                                 }
1140                     }
1141                 });
1142                 selectionModels.add(otherSharedTreeSelectionModel);
1143                 otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1144                 otherSharedTreeViewModel.initialize(new Command() {
1145
1146                         @Override
1147                         public void execute() {
1148                             otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1149                                 trees.insert(otherSharedTreeView, 1);
1150                                 treeViews.add(otherSharedTreeView);
1151                         }
1152                 });
1153         }
1154
1155         public native void log1(String message)/*-{
1156                 $wnd.console.log(message);
1157         }-*/;
1158
1159         public String getErrorData() {
1160                 if (error != null)
1161                         return error.toString();
1162                 return "";
1163         }
1164
1165         public void setError(Throwable t) {
1166                 error = t;
1167         }
1168
1169         public void showRelevantToolbarButtons() {
1170                 toolbar.showRelevantButtons();
1171         }
1172
1173         public FileUploadDialog getFileUploadDialog() {
1174                 if (fileUploadDialog == null)
1175                         fileUploadDialog = new FileUploadDialog(this);
1176                 return fileUploadDialog;
1177         }
1178
1179         public void hideUploadIndicator() {
1180                 upload.removeStyleName("pithos-uploadButton-loading");
1181                 upload.setTitle("");
1182         }
1183
1184         public void showUploadIndicator() {
1185                 upload.addStyleName("pithos-uploadButton-loading");
1186                 upload.setTitle("Upload in progress. Click for details.");
1187         }
1188
1189         public void scheduleFolderHeadCommand(final Folder folder, final Command callback) {
1190                 if (folder == null) {
1191                         if (callback != null)
1192                                 callback.execute();
1193                 }
1194                 else {
1195                         HeadRequest<Folder> headFolder = new HeadRequest<Folder>(Folder.class, getApiPath(), folder.getOwner(), folder.getUri(), folder) {
1196
1197                                 @Override
1198                                 public void onSuccess(Folder _result) {
1199                                         if (callback != null)
1200                                                 callback.execute();
1201                                 }
1202
1203                                 @Override
1204                                 public void onError(Throwable t) {
1205                                 if (t instanceof RestException) {
1206                                         if (((RestException) t).getHttpStatusCode() == Response.SC_NOT_FOUND) {
1207                                 final String path = folder.getUri();
1208                                 PutRequest newFolder = new PutRequest(getApiPath(), folder.getOwner(), path) {
1209                                     @Override
1210                                     public void onSuccess(Resource _result) {
1211                                         scheduleFolderHeadCommand(folder, callback);
1212                                     }
1213
1214                                     @Override
1215                                     public void onError(Throwable _t) {
1216                                         GWT.log("", _t);
1217                                                                 setError(_t);
1218                                         if(_t instanceof RestException){
1219                                             displayError("Unable to create folder: " + ((RestException) _t).getHttpStatusText());
1220                                         }
1221                                         else
1222                                             displayError("System error creating folder: " + _t.getMessage());
1223                                     }
1224
1225                                                 @Override
1226                                                 protected void onUnauthorized(Response response) {
1227                                                         sessionExpired();
1228                                                 }
1229                                 };
1230                                 newFolder.setHeader("X-Auth-Token", getToken());
1231                                 newFolder.setHeader("Content-Type", "application/folder");
1232                                 newFolder.setHeader("Accept", "*/*");
1233                                 newFolder.setHeader("Content-Length", "0");
1234                                 Scheduler.get().scheduleDeferred(newFolder);
1235                                         }
1236                                         else
1237                                                 displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
1238                                 }
1239                                 else
1240                                     displayError("System error heading folder: " + t.getMessage());
1241
1242                                 GWT.log("Error heading folder", t);
1243                                         setError(t);
1244                                 }
1245
1246                                 @Override
1247                                 protected void onUnauthorized(Response response) {
1248                                         sessionExpired();
1249                                 }
1250                         };
1251                         headFolder.setHeader("X-Auth-Token", getToken());
1252                         Scheduler.get().scheduleDeferred(headFolder);
1253                 }
1254         }
1255
1256         public void scheduleFileHeadCommand(File f, final Command callback) {
1257                 HeadRequest<File> headFile = new HeadRequest<File>(File.class, getApiPath(), f.getOwner(), f.getUri(), f) {
1258
1259                         @Override
1260                         public void onSuccess(File _result) {
1261                                 if (callback != null)
1262                                         callback.execute();
1263                         }
1264
1265                         @Override
1266                         public void onError(Throwable t) {
1267                         GWT.log("Error heading file", t);
1268                                 setError(t);
1269                         if (t instanceof RestException)
1270                             displayError("Error heading file: " + ((RestException) t).getHttpStatusText());
1271                         else
1272                             displayError("System error heading file: " + t.getMessage());
1273                         }
1274
1275                         @Override
1276                         protected void onUnauthorized(Response response) {
1277                                 sessionExpired();
1278                         }
1279                 };
1280                 headFile.setHeader("X-Auth-Token", getToken());
1281                 Scheduler.get().scheduleDeferred(headFile);
1282         }
1283
1284         public boolean isMySharedSelected() {
1285                 return getSelectedTree().equals(getMySharedTreeView());
1286         }
1287 }