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 com.google.gwt.core.client.EntryPoint;
  38 import com.google.gwt.core.client.GWT;
  39 import com.google.gwt.core.client.JsArrayString;
  40 import com.google.gwt.core.client.Scheduler;
  41 import com.google.gwt.core.client.Scheduler.RepeatingCommand;
  42 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  43 import com.google.gwt.event.dom.client.ClickEvent;
  44 import com.google.gwt.event.dom.client.ClickHandler;
  45 import com.google.gwt.event.logical.shared.ResizeEvent;
  46 import com.google.gwt.event.logical.shared.ResizeHandler;
  47 import com.google.gwt.http.client.Request;
  48 import com.google.gwt.http.client.Response;
  49 import com.google.gwt.http.client.URL;
  50 import com.google.gwt.i18n.client.DateTimeFormat;
  51 import com.google.gwt.i18n.client.Dictionary;
  52 import com.google.gwt.i18n.client.TimeZone;
  53 import com.google.gwt.json.client.JSONObject;
  54 import com.google.gwt.resources.client.ClientBundle;
  55 import com.google.gwt.resources.client.CssResource;
  56 import com.google.gwt.resources.client.ImageResource;
  57 import com.google.gwt.resources.client.ImageResource.ImageOptions;
  58 import com.google.gwt.user.client.*;
  59 import com.google.gwt.user.client.ui.*;
  60 import com.google.gwt.view.client.SelectionChangeEvent;
  61 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
  62 import com.google.gwt.view.client.SingleSelectionModel;
  63 import gr.grnet.pithos.web.client.catalog.GetUserCatalogs;
  64 import gr.grnet.pithos.web.client.catalog.UserCatalogs;
  65 import gr.grnet.pithos.web.client.commands.UploadFileCommand;
  66 import gr.grnet.pithos.web.client.foldertree.*;
  67 import gr.grnet.pithos.web.client.grouptree.Group;
  68 import gr.grnet.pithos.web.client.grouptree.GroupTreeView;
  69 import gr.grnet.pithos.web.client.grouptree.GroupTreeViewModel;
  70 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView;
  71 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeViewModel;
  72 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView;
  73 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeViewModel;
  74 import gr.grnet.pithos.web.client.rest.*;
  75 import org.apache.http.HttpStatus;
  76
  77 import java.util.*;
  78
  79 /**
  80  * Entry point classes define <code>onModuleLoad()</code>.
  81  */
  82 public class Pithos implements EntryPoint, ResizeHandler {
  83
  84     public static final String HOME_CONTAINER = "pithos";
  85
  86     public static final String TRASH_CONTAINER = "trash";
  87
  88     public static final Configuration config = GWT.create(Configuration.class);
  89
  90     public interface Style extends CssResource {
  91         String commandAnchor();
  92
  93         String statistics();
  94
  95         @ClassName("gwt-HTML")
  96         String html();
  97
  98         String uploadAlert();
  99
 100         String uploadAlertLink();
 101
 102         String uploadAlertProgress();
 103
 104         String uploadAlertPercent();
 105
 106         String uploadAlertClose();
 107     }
 108
 109     public interface Resources extends ClientBundle {
 110         @Source("Pithos.css")
 111         Style pithosCss();
 112
 113         @Source("gr/grnet/pithos/resources/close-popup.png")
 114         ImageResource closePopup();
 115     }
 116
 117     public static Resources resources = GWT.create(Resources.class);
 118
 119     /**
 120      * Instantiate an application-level image bundle. This object will provide
 121      * programmatic access to all the images needed by widgets.
 122      */
 123     static Images images = (Images) GWT.create(Images.class);
 124
 125     public String getUserID() {
 126         return userID;
 127     }
 128
 129     public UserCatalogs getUserCatalogs() {
 130         return userCatalogs;
 131     }
 132
 133     public String getCurrentUserDisplayNameOrID() {
 134         final String displayName = userCatalogs.getDisplayName(getUserID());
 135         return displayName == null ? getUserID() : displayName;
 136     }
 137
 138     public boolean hasUserDisplayNameForID(String userID) {
 139         return userCatalogs.getDisplayName(userID) != null;
 140     }
 141
 142     public String getUserDisplayNameForID(String userID) {
 143         return userCatalogs.getDisplayName(userID);
 144     }
 145
 146     public String getUserIDForDisplayName(String displayName) {
 147         return userCatalogs.getUserID(displayName);
 148     }
 149
 150     public List<String> getUserDisplayNamesForIDs(List<String> userIDs) {
 151         if(userIDs == null) {
 152             userIDs = new ArrayList<String>();
 153         }
 154         final List<String> userDisplayNames = new ArrayList<String>();
 155         for(String userID : userIDs) {
 156             final String displayName = getUserDisplayNameForID(userID);
 157             userDisplayNames.add(displayName);
 158         }
 159
 160         return userDisplayNames;
 161     }
 162
 163     public List<String> filterUserIDsWithUnknownDisplayName(Collection<String> userIDs) {
 164         if(userIDs == null) {
 165             userIDs = new ArrayList<String>();
 166         }
 167         final List<String> filtered = new ArrayList<String>();
 168         for(String userID : userIDs) {
 169             if(!this.userCatalogs.hasID(userID)) {
 170                 filtered.add(userID);
 171             }
 172         }
 173         return filtered;
 174     }
 175
 176     public void setAccount(AccountResource acct) {
 177         account = acct;
 178     }
 179
 180     public AccountResource getAccount() {
 181         return account;
 182     }
 183
 184     public void updateFolder(Folder f, boolean showfiles, Command callback, final boolean openParent) {
 185         folderTreeView.updateFolder(f, showfiles, callback, openParent);
 186     }
 187
 188     public void updateGroupNode(Group group) {
 189         groupTreeView.updateGroupNode(group);
 190     }
 191
 192     public void updateMySharedRoot() {
 193         mysharedTreeView.updateRoot();
 194     }
 195
 196     public void updateSharedFolder(Folder f, boolean showfiles, Command callback) {
 197         mysharedTreeView.updateFolder(f, showfiles, callback);
 198     }
 199
 200     public void updateSharedFolder(Folder f, boolean showfiles) {
 201         updateSharedFolder(f, showfiles, null);
 202     }
 203
 204     public void updateOtherSharedFolder(Folder f, boolean showfiles, Command callback) {
 205         otherSharedTreeView.updateFolder(f, showfiles, callback);
 206     }
 207
 208     public MysharedTreeView getMySharedTreeView() {
 209         return mysharedTreeView;
 210     }
 211
 212     /**
 213      * An aggregate image bundle that pulls together all the images for this
 214      * application into a single bundle.
 215      */
 216     public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 217
 218         @Source("gr/grnet/pithos/resources/document.png")
 219         ImageResource folders();
 220
 221         @Source("gr/grnet/pithos/resources/advancedsettings.png")
 222         @ImageOptions(width = 32, height = 32)
 223         ImageResource tools();
 224     }
 225
 226     private Throwable error;
 227
 228     /**
 229      * The Application Clipboard implementation;
 230      */
 231     private Clipboard clipboard = new Clipboard();
 232
 233     /**
 234      * The top panel that contains the menu bar.
 235      */
 236     private TopPanel topPanel;
 237
 238     /**
 239      * The panel that contains the various system messages.
 240      */
 241     private MessagePanel messagePanel = new MessagePanel(this, Pithos.images);
 242
 243     /**
 244      * The bottom panel that contains the status bar.
 245      */
 246     StatusPanel statusPanel = null;
 247
 248     /**
 249      * The file list widget.
 250      */
 251     private FileList fileList;
 252
 253     /**
 254      * The tab panel that occupies the right side of the screen.
 255      */
 256     private VerticalPanel inner = new VerticalPanel();
 257
 258
 259     /**
 260      * The split panel that will contain the left and right panels.
 261      */
 262     private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 263
 264     /**
 265      * The currently selected item in the application, for use by the Edit menu
 266      * commands. Potential types are Folder, File, User and Group.
 267      */
 268     private Object currentSelection;
 269
 270     public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 271
 272     /**
 273      * The ID that uniquely identifies the user in Pithos+.
 274      * Currently this is a UUID. It used to be the user's email.
 275      */
 276     private String userID = null;
 277
 278     /**
 279      * Hold mappings from user UUIDs to emails and vice-versa.
 280      */
 281     private UserCatalogs userCatalogs = new UserCatalogs();
 282
 283     /**
 284      * The authentication token of the current user.
 285      */
 286     private String userToken;
 287
 288     VerticalPanel trees;
 289
 290     SingleSelectionModel<Folder> folderTreeSelectionModel;
 291     FolderTreeViewModel folderTreeViewModel;
 292     FolderTreeView folderTreeView;
 293
 294     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 295     MysharedTreeViewModel mysharedTreeViewModel;
 296     MysharedTreeView mysharedTreeView = null;
 297
 298     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 299     OtherSharedTreeViewModel otherSharedTreeViewModel;
 300     OtherSharedTreeView otherSharedTreeView = null;
 301
 302     GroupTreeViewModel groupTreeViewModel;
 303     GroupTreeView groupTreeView;
 304
 305     TreeView selectedTree;
 306     protected AccountResource account;
 307
 308     Folder trash;
 309
 310     List<Composite> treeViews = new ArrayList<Composite>();
 311
 312     @SuppressWarnings("rawtypes")
 313     List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 314
 315     public Button upload;
 316
 317     private HTML numOfFiles;
 318
 319     private Toolbar toolbar;
 320
 321     private FileUploadDialog fileUploadDialog = new FileUploadDialog(this);
 322
 323     UploadAlert uploadAlert;
 324
 325     Date lastModified;
 326
 327     @Override
 328     public void onModuleLoad() {
 329         if(parseUserCredentials()) {
 330             initialize();
 331         }
 332     }
 333
 334     private void initialize() {
 335         System.out.println("initialize(), userToken = " + userToken);
 336         lastModified = new Date(); //Initialize if-modified-since value with now.
 337         resources.pithosCss().ensureInjected();
 338         boolean bareContent = Window.Location.getParameter("noframe") != null;
 339         String contentWidth = bareContent ? "100%" : "75%";
 340
 341         VerticalPanel outer = new VerticalPanel();
 342         outer.setWidth("100%");
 343         if(!bareContent) {
 344             outer.addStyleName("pithos-outer");
 345         }
 346
 347         if(!bareContent) {
 348             topPanel = new TopPanel(this, Pithos.images);
 349             topPanel.setWidth("100%");
 350             outer.add(topPanel);
 351             outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 352         }
 353
 354         messagePanel.setVisible(false);
 355         outer.add(messagePanel);
 356         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 357         outer.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
 358
 359         HorizontalPanel header = new HorizontalPanel();
 360         header.addStyleName("pithos-header");
 361         header.setWidth(contentWidth);
 362         if(bareContent) {
 363             header.addStyleName("pithos-header-noframe");
 364         }
 365         upload = new Button("Upload", new ClickHandler() {
 366             @Override
 367             public void onClick(ClickEvent event) {
 368                 if(getSelection() != null) {
 369                     new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 370                 }
 371             }
 372         });
 373         upload.addStyleName("pithos-uploadButton");
 374         header.add(upload);
 375         header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 376         header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 377
 378         toolbar = new Toolbar(this);
 379         header.add(toolbar);
 380         header.setCellHorizontalAlignment(toolbar, HasHorizontalAlignment.ALIGN_CENTER);
 381         header.setCellVerticalAlignment(toolbar, HasVerticalAlignment.ALIGN_MIDDLE);
 382
 383         HorizontalPanel folderStatistics = new HorizontalPanel();
 384         folderStatistics.addStyleName("pithos-folderStatistics");
 385         numOfFiles = new HTML();
 386         folderStatistics.add(numOfFiles);
 387         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 388         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 389         folderStatistics.add(numOfFilesLabel);
 390         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 391         header.add(folderStatistics);
 392         header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 393         header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
 394         header.setCellWidth(folderStatistics, "40px");
 395         outer.add(header);
 396         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 397         // Inner contains the various lists
 398         inner.sinkEvents(Event.ONCONTEXTMENU);
 399         inner.setWidth("100%");
 400
 401         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 402         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 403             @Override
 404             public void onSelectionChange(SelectionChangeEvent event) {
 405                 if(folderTreeSelectionModel.getSelectedObject() != null) {
 406                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 407                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 408                     Folder f = folderTreeSelectionModel.getSelectedObject();
 409                     updateFolder(f, true, new Command() {
 410
 411                         @Override
 412                         public void execute() {
 413                             updateStatistics();
 414                         }
 415                     }, true);
 416                     showRelevantToolbarButtons();
 417                 }
 418                 else {
 419                     if(getSelectedTree().equals(folderTreeView)) {
 420                         setSelectedTree(null);
 421                     }
 422                     if(getSelectedTree() == null) {
 423                         showRelevantToolbarButtons();
 424                     }
 425                 }
 426             }
 427         });
 428         selectionModels.add(folderTreeSelectionModel);
 429
 430         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 431         folderTreeView = new FolderTreeView(folderTreeViewModel);
 432         treeViews.add(folderTreeView);
 433
 434         fileList = new FileList(this, images);
 435         inner.add(fileList);
 436
 437         trees = new VerticalPanel();
 438         trees.setWidth("100%");
 439
 440         // Add the left and right panels to the split panel.
 441         splitPanel.setLeftWidget(trees);
 442         FlowPanel right = new FlowPanel();
 443         right.getElement().setId("rightPanel");
 444         right.add(inner);
 445         splitPanel.setRightWidget(right);
 446         splitPanel.setSplitPosition("219px");
 447         splitPanel.setSize("100%", "100%");
 448         splitPanel.addStyleName("pithos-splitPanel");
 449         splitPanel.setWidth(contentWidth);
 450         outer.add(splitPanel);
 451         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 452
 453         if(!bareContent) {
 454             statusPanel = new StatusPanel();
 455             statusPanel.setWidth("100%");
 456             outer.add(statusPanel);
 457             outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 458         }
 459         else {
 460             splitPanel.addStyleName("pithos-splitPanel-noframe");
 461         }
 462
 463         // Hook the window resize event, so that we can adjust the UI.
 464         Window.addResizeHandler(this);
 465         // Clear out the window's built-in margin, because we want to take
 466         // advantage of the entire client area.
 467         Window.setMargin("0px");
 468         // Finally, add the outer panel to the RootPanel, so that it will be
 469         // displayed.
 470         RootPanel.get().add(outer);
 471         // Call the window resized handler to get the initial sizes setup. Doing
 472         // this in a deferred command causes it to occur after all widgets'
 473         // sizes have been computed by the browser.
 474         Scheduler.get().scheduleIncremental(new RepeatingCommand() {
 475
 476             @Override
 477             public boolean execute() {
 478                 if(!isCloudbarReady()) {
 479                     return true;
 480                 }
 481                 onWindowResized(Window.getClientHeight());
 482                 return false;
 483             }
 484         });
 485
 486         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 487             @Override
 488             public void execute() {
 489                 fetchAccount(new Command() {
 490
 491                     @Override
 492                     public void execute() {
 493                         if(!account.hasHomeContainer()) {
 494                             createHomeContainer(account, this);
 495                         }
 496                         else if(!account.hasTrashContainer()) {
 497                             createTrashContainer(this);
 498                         }
 499                         else {
 500                             for(Folder f : account.getContainers()) {
 501                                 if(f.getName().equals(Pithos.TRASH_CONTAINER)) {
 502                                     trash = f;
 503                                     break;
 504                                 }
 505                             }
 506                             trees.add(folderTreeView);
 507                             folderTreeViewModel.initialize(account, new Command() {
 508
 509                                 @Override
 510                                 public void execute() {
 511                                     createMySharedTree();
 512                                 }
 513                             });
 514
 515                             HorizontalPanel separator = new HorizontalPanel();
 516                             separator.addStyleName("pithos-statisticsSeparator");
 517                             separator.add(new HTML(""));
 518                             trees.add(separator);
 519
 520                             groupTreeViewModel = new GroupTreeViewModel(Pithos.this);
 521                             groupTreeView = new GroupTreeView(groupTreeViewModel);
 522                             treeViews.add(groupTreeView);
 523                             trees.add(groupTreeView);
 524                             folderTreeView.showStatistics(account);
 525                         }
 526                     }
 527                 });
 528             }
 529         });
 530     }
 531
 532     public void scheduleResfresh() {
 533         Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
 534
 535             @Override
 536             public boolean execute() {
 537                 final Folder f = getSelection();
 538                 if(f == null) {
 539                     return true;
 540                 }
 541
 542                 HeadRequest<Folder> head = new HeadRequest<Folder>(Folder.class, getApiPath(), f.getOwnerID(), "/" + f.getContainer()) {
 543
 544                     @Override
 545                     public void onSuccess(Folder _result) {
 546                         lastModified = new Date();
 547                         if(getSelectedTree().equals(folderTreeView)) {
 548                             updateFolder(f, true, new Command() {
 549
 550                                 @Override
 551                                 public void execute() {
 552                                     scheduleResfresh();
 553                                 }
 554
 555                             }, false);
 556                         }
 557                         else if(getSelectedTree().equals(mysharedTreeView)) {
 558                             updateSharedFolder(f, true, new Command() {
 559
 560                                 @Override
 561                                 public void execute() {
 562                                     scheduleResfresh();
 563                                 }
 564                             });
 565                         }
 566                         else {
 567                             scheduleResfresh();
 568                         }
 569                     }
 570
 571                     @Override
 572                     public void onError(Throwable t) {
 573                         if(t instanceof RestException && ((RestException) t).getHttpStatusCode() == HttpStatus.SC_NOT_MODIFIED) {
 574                             scheduleResfresh();
 575                         }
 576                         else if(retries >= MAX_RETRIES) {
 577                             GWT.log("Error heading folder", t);
 578                             setError(t);
 579                             if(t instanceof RestException) {
 580                                 displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
 581                             }
 582                             else {
 583                                 displayError("System error heading folder: " + t.getMessage());
 584                             }
 585                         }
 586                         else {//retry
 587                             GWT.log("Retry " + retries);
 588                             Scheduler.get().scheduleDeferred(this);
 589                         }
 590                     }
 591
 592                     @Override
 593                     protected void onUnauthorized(Response response) {
 594                         if(retries >= MAX_RETRIES) {
 595                             sessionExpired();
 596                         }
 597                         else //retry
 598                         {
 599                             Scheduler.get().scheduleDeferred(this);
 600                         }
 601                     }
 602                 };
 603                 head.setHeader("X-Auth-Token", getUserToken());
 604                 head.setHeader("If-Modified-Since", DateTimeFormat.getFormat("EEE, dd MMM yyyy HH:mm:ss").format(lastModified, TimeZone.createTimeZone(0)) + " GMT");
 605                 Scheduler.get().scheduleDeferred(head);
 606
 607                 return false;
 608             }
 609         }, 3000);
 610     }
 611
 612     public void applyPermissions(Folder f) {
 613         if(f != null) {
 614             if(f.isInTrash()) {
 615                 upload.setEnabled(false);
 616                 disableUploadArea();
 617             }
 618             else {
 619                 Boolean[] perms = f.getPermissions().get(userID);
 620                 if(f.getOwnerID().equals(userID) || (perms != null && perms[1] != null && perms[1])) {
 621                     upload.setEnabled(true);
 622                     enableUploadArea();
 623                 }
 624                 else {
 625                     upload.setEnabled(false);
 626                     disableUploadArea();
 627                 }
 628             }
 629         }
 630         else {
 631             upload.setEnabled(false);
 632             disableUploadArea();
 633         }
 634     }
 635
 636     @SuppressWarnings({"rawtypes", "unchecked"})
 637     public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 638         selectedTree = _selectedTree;
 639
 640         for(SingleSelectionModel s : selectionModels) {
 641             if(!s.equals(model) && s.getSelectedObject() != null) {
 642                 s.setSelected(s.getSelectedObject(), false);
 643             }
 644         }
 645     }
 646
 647     public void showFiles(final Folder f) {
 648         Set<File> files = f.getFiles();
 649         showFiles(files);
 650     }
 651
 652     public void showFiles(Set<File> files) {
 653         fileList.setFiles(new ArrayList<File>(files));
 654     }
 655
 656     /**
 657      * Parse and store the user credentials to the appropriate fields.
 658      */
 659     private boolean parseUserCredentials() {
 660         Configuration conf = (Configuration) GWT.create(Configuration.class);
 661         Dictionary otherProperties = Dictionary.getDictionary("otherProperties");
 662         System.out.println("otherProperties = " + otherProperties);
 663         String cookie = otherProperties.get("authCookie");
 664         System.out.println("cookie = " + cookie);
 665         Cookies.setCookie(cookie, "868fbb51-94a4-477d-8da3-dadad080c861|HlPjywM5FGAncsoNDzPZ2Q==");
 666 //        Cookies.setCookie(cookie, "868fbb51-94a4-477d-8da3-dadad080c861%7CHlPjywM5FGAncsoNDzPZ2Q%3D%3D");
 667         for(String name: Cookies.getCookieNames()) {
 668             System.out.println("cookie name: " + name);
 669         }
 670         String auth = Cookies.getCookie(cookie);
 671         System.out.println("auth = " + auth);
 672         if(auth == null) {
 673             authenticateUser();
 674             return false;
 675         }
 676         if(auth.startsWith("\"")) {
 677             auth = auth.substring(1);
 678         }
 679         if(auth.endsWith("\"")) {
 680             auth = auth.substring(0, auth.length() - 1);
 681         }
 682         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 683         for(String authPart: authSplit) {
 684             System.out.println("authPart: " + authPart);
 685         }
 686         if(authSplit.length != 2) {
 687             authenticateUser();
 688             return false;
 689         }
 690         userID = authSplit[0];
 691         userToken = authSplit[1];
 692         System.out.println("userID = " + userID);
 693         System.out.println("userToken = " + userToken);
 694
 695         String gotoUrl = Window.Location.getParameter("goto");
 696         if(gotoUrl != null && gotoUrl.length() > 0) {
 697             Window.Location.assign(gotoUrl);
 698             return false;
 699         }
 700         System.out.println("Returning true");
 701         return true;
 702     }
 703
 704     /**
 705      * Redirect the user to the login page for authentication.
 706      */
 707     protected void authenticateUser() {
 708         Dictionary otherProperties = Dictionary.getDictionary("otherProperties");
 709         Window.Location.assign(otherProperties.get("loginUrl") + Window.Location.getHref());
 710     }
 711
 712     public void fetchAccount(final Command callback) {
 713         System.out.println("fetchAccount(), userID = " + this.userID + ", userToken = " + this.userToken);
 714         String path = "?format=json";
 715
 716         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), userID, path) {
 717             @Override
 718             public void onSuccess(AccountResource _result) {
 719                 System.out.println("fetchAccount(), userID = " + userID + ", userToken = " + userToken + " onSuccess()");
 720                 account = _result;
 721                 if(callback != null) {
 722                     callback.execute();
 723                 }
 724                 // Initialize the user catalog
 725                 new GetUserCatalogs(Pithos.this, Pithos.this.getUserID()) {
 726                     @Override
 727                     public void onSuccess(Request request, Response response, JSONObject result, UserCatalogs usersCatalog) {
 728                         super.onSuccess(request, response, result, usersCatalog);
 729                         Pithos.this.userCatalogs.updateFrom(usersCatalog);
 730                     }
 731                 }.scheduleDeferred();
 732             }
 733
 734             @Override
 735             public void onError(Throwable t) {
 736                 System.out.println("fetchAccount(), userID = " + userID + ", userToken = " + userToken + " onError() " + t.getClass().getName() + ": " + t.getMessage());
 737                 GWT.log("Error getting account", t);
 738                 setError(t);
 739                 if(t instanceof RestException) {
 740                     System.out.println("fetchAccount(), userID = " + userID + ", userToken = " + userToken + " Error getting account: " + ((RestException) t).getHttpStatusText());
 741                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 742                 }
 743                 else {
 744                     System.out.println("fetchAccount(), userID = " + userID + ", userToken = " + userToken + "System error fetching user data: " + t.getMessage());
 745                     displayError("System error fetching user data: " + t.getMessage());
 746                 }
 747             }
 748
 749             @Override
 750             protected void onUnauthorized(Response response) {
 751                 System.out.println("fetchAccount(), userID = " + userID + ", userToken = " + userToken + " onUnauthorized()");
 752                 sessionExpired();
 753             }
 754         };
 755         getAccount.setHeader("X-Auth-Token", userToken);
 756         Scheduler.get().scheduleDeferred(getAccount);
 757     }
 758
 759     public void updateStatistics() {
 760         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), userID, "", account) {
 761
 762             @Override
 763             public void onSuccess(AccountResource _result) {
 764                 folderTreeView.showStatistics(account);
 765             }
 766
 767             @Override
 768             public void onError(Throwable t) {
 769                 GWT.log("Error getting account", t);
 770                 setError(t);
 771                 if(t instanceof RestException) {
 772                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 773                 }
 774                 else {
 775                     displayError("System error fetching user data: " + t.getMessage());
 776                 }
 777             }
 778
 779             @Override
 780             protected void onUnauthorized(Response response) {
 781                 sessionExpired();
 782             }
 783         };
 784         headAccount.setHeader("X-Auth-Token", userToken);
 785         Scheduler.get().scheduleDeferred(headAccount);
 786     }
 787
 788     protected void createHomeContainer(final AccountResource _account, final Command callback) {
 789         String path = "/" + Pithos.HOME_CONTAINER;
 790         PutRequest createPithos = new PutRequest(getApiPath(), getUserID(), path) {
 791             @Override
 792             public void onSuccess(Resource result) {
 793                 if(!_account.hasTrashContainer()) {
 794                     createTrashContainer(callback);
 795                 }
 796                 else {
 797                     fetchAccount(callback);
 798                 }
 799             }
 800
 801             @Override
 802             public void onError(Throwable t) {
 803                 GWT.log("Error creating pithos", t);
 804                 setError(t);
 805                 if(t instanceof RestException) {
 806                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 807                 }
 808                 else {
 809                     displayError("System error Error creating pithos: " + t.getMessage());
 810                 }
 811             }
 812
 813             @Override
 814             protected void onUnauthorized(Response response) {
 815                 sessionExpired();
 816             }
 817         };
 818         createPithos.setHeader("X-Auth-Token", getUserToken());
 819         Scheduler.get().scheduleDeferred(createPithos);
 820     }
 821
 822     protected void createTrashContainer(final Command callback) {
 823         String path = "/" + Pithos.TRASH_CONTAINER;
 824         PutRequest createPithos = new PutRequest(getApiPath(), getUserID(), path) {
 825             @Override
 826             public void onSuccess(Resource result) {
 827                 fetchAccount(callback);
 828             }
 829
 830             @Override
 831             public void onError(Throwable t) {
 832                 GWT.log("Error creating pithos", t);
 833                 setError(t);
 834                 if(t instanceof RestException) {
 835                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 836                 }
 837                 else {
 838                     displayError("System error Error creating pithos: " + t.getMessage());
 839                 }
 840             }
 841
 842             @Override
 843             protected void onUnauthorized(Response response) {
 844                 sessionExpired();
 845             }
 846         };
 847         createPithos.setHeader("X-Auth-Token", getUserToken());
 848         Scheduler.get().scheduleDeferred(createPithos);
 849     }
 850
 851     /**
 852      * Creates an HTML fragment that places an image & caption together, for use
 853      * in a group header.
 854      *
 855      * @param imageProto an image prototype for an image
 856      * @param caption    the group caption
 857      * @return the header HTML fragment
 858      */
 859     private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 860         String captionHTML = "<table class='caption' cellpadding='0' "
 861             + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 862             + "</td><td id =" + caption + " class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 863             + caption + "</b></td></tr></table>";
 864         return captionHTML;
 865     }
 866
 867     protected void onWindowResized(int height) {
 868         // Adjust the split panel to take up the available room in the window.
 869         int newHeight = height - splitPanel.getAbsoluteTop() - 153;
 870         if(newHeight < 1) {
 871             newHeight = 1;
 872         }
 873         splitPanel.setHeight("" + newHeight);
 874         inner.setHeight("" + newHeight);
 875     }
 876
 877     native boolean isCloudbarReady()/*-{
 878       if ($wnd.$("div.cloudbar") && $wnd.$("div.cloudbar").height() > 0)
 879         return true;
 880       return false;
 881     }-*/;
 882
 883     @Override
 884     public void onResize(ResizeEvent event) {
 885         int height = event.getHeight();
 886         onWindowResized(height);
 887     }
 888
 889     /**
 890      * Display an error message.
 891      *
 892      * @param msg the message to display
 893      */
 894     public void displayError(String msg) {
 895         messagePanel.displayError(msg);
 896         onWindowResized(Window.getClientHeight());
 897     }
 898
 899     /**
 900      * Display a warning message.
 901      *
 902      * @param msg the message to display
 903      */
 904     public void displayWarning(String msg) {
 905         messagePanel.displayWarning(msg);
 906         onWindowResized(Window.getClientHeight());
 907     }
 908
 909     /**
 910      * Display an informational message.
 911      *
 912      * @param msg the message to display
 913      */
 914     public void displayInformation(String msg) {
 915         messagePanel.displayInformation(msg);
 916         onWindowResized(Window.getClientHeight());
 917     }
 918
 919     /**
 920      * Retrieve the fileList.
 921      *
 922      * @return the fileList
 923      */
 924     public FileList getFileList() {
 925         return fileList;
 926     }
 927
 928     /**
 929      * Retrieve the topPanel.
 930      *
 931      * @return the topPanel
 932      */
 933     TopPanel getTopPanel() {
 934         return topPanel;
 935     }
 936
 937     /**
 938      * Retrieve the clipboard.
 939      *
 940      * @return the clipboard
 941      */
 942     public Clipboard getClipboard() {
 943         return clipboard;
 944     }
 945
 946     public StatusPanel getStatusPanel() {
 947         return statusPanel;
 948     }
 949
 950     public String getUserToken() {
 951         return userToken;
 952     }
 953
 954     public static native void preventIESelection() /*-{
 955       $doc.body.onselectstart = function () {
 956         return false;
 957       };
 958     }-*/;
 959
 960     public static native void enableIESelection() /*-{
 961       if ($doc.body.onselectstart != null)
 962         $doc.body.onselectstart = null;
 963     }-*/;
 964
 965     /**
 966      * @return the absolute path of the API root URL
 967      */
 968     public String getApiPath() {
 969         Configuration conf = (Configuration) GWT.create(Configuration.class);
 970         return conf.apiPath();
 971     }
 972
 973     /**
 974      * History support for folder navigation
 975      * adds a new browser history entry
 976      *
 977      * @param key
 978      */
 979     public void updateHistory(String key) {
 980 //              Replace any whitespace of the initial string to "+"
 981 //              String result = key.replaceAll("\\s","+");
 982 //              Add a new browser history entry.
 983 //              History.newItem(result);
 984         History.newItem(key);
 985     }
 986
 987     public void deleteFolder(final Folder folder, final Command callback) {
 988         final PleaseWaitPopup pwp = new PleaseWaitPopup();
 989         pwp.center();
 990         String path = "/" + folder.getContainer() + "/" + folder.getPrefix() + "?delimiter=/" + "&t=" + System.currentTimeMillis();
 991         DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), folder.getOwnerID(), path) {
 992
 993             @Override
 994             protected void onUnauthorized(Response response) {
 995                 pwp.hide();
 996                 sessionExpired();
 997             }
 998
 999             @Override
1000             public void onSuccess(Resource result) {
1001                 updateFolder(folder.getParent(), true, new Command() {
1002
1003                     @Override
1004                     public void execute() {
1005                         folderTreeSelectionModel.setSelected(folder.getParent(), true);
1006                         updateStatistics();
1007                         if(callback != null) {
1008                             callback.execute();
1009                         }
1010                         pwp.hide();
1011                     }
1012                 }, true);
1013             }
1014
1015             @Override
1016             public void onError(Throwable t) {
1017                 GWT.log("", t);
1018                 setError(t);
1019                 if(t instanceof RestException) {
1020                     if(((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND) {
1021                         displayError("Unable to delete folder: " + ((RestException) t).getHttpStatusText());
1022                     }
1023                     else {
1024                         onSuccess(null);
1025                     }
1026                 }
1027                 else {
1028                     displayError("System error unable to delete folder: " + t.getMessage());
1029                 }
1030                 pwp.hide();
1031             }
1032         };
1033         deleteFolder.setHeader("X-Auth-Token", getUserToken());
1034         Scheduler.get().scheduleDeferred(deleteFolder);
1035     }
1036
1037     public FolderTreeView getFolderTreeView() {
1038         return folderTreeView;
1039     }
1040
1041     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
1042         if(iter.hasNext()) {
1043             File file = iter.next();
1044             String path = targetUri + "/" + file.getName();
1045             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
1046                 @Override
1047                 public void onSuccess(Resource result) {
1048                     copyFiles(iter, targetUsername, targetUri, callback);
1049                 }
1050
1051                 @Override
1052                 public void onError(Throwable t) {
1053                     GWT.log("", t);
1054                     setError(t);
1055                     if(t instanceof RestException) {
1056                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
1057                     }
1058                     else {
1059                         displayError("System error unable to copy file: " + t.getMessage());
1060                     }
1061                 }
1062
1063                 @Override
1064                 protected void onUnauthorized(Response response) {
1065                     sessionExpired();
1066                 }
1067             };
1068             copyFile.setHeader("X-Auth-Token", getUserToken());
1069             copyFile.setHeader("X-Copy-From", URL.encodePathSegment(file.getUri()));
1070             if(!file.getOwnerID().equals(targetUsername)) {
1071                 copyFile.setHeader("X-Source-Account", URL.encodePathSegment(file.getOwnerID()));
1072             }
1073             copyFile.setHeader("Content-Type", file.getContentType());
1074             Scheduler.get().scheduleDeferred(copyFile);
1075         }
1076         else if(callback != null) {
1077             callback.execute();
1078         }
1079     }
1080
1081     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, boolean move, final Command callback) {
1082         String path = targetUri + "?delimiter=/";
1083         PutRequest copyFolder = new PutRequest(getApiPath(), targetUsername, path) {
1084             @Override
1085             public void onSuccess(Resource result) {
1086                 if(callback != null) {
1087                     callback.execute();
1088                 }
1089             }
1090
1091             @Override
1092             public void onError(Throwable t) {
1093                 GWT.log("", t);
1094                 setError(t);
1095                 if(t instanceof RestException) {
1096                     displayError("Unable to copy folder: " + ((RestException) t).getHttpStatusText());
1097                 }
1098                 else {
1099                     displayError("System error copying folder: " + t.getMessage());
1100                 }
1101             }
1102
1103             @Override
1104             protected void onUnauthorized(Response response) {
1105                 sessionExpired();
1106             }
1107         };
1108         copyFolder.setHeader("X-Auth-Token", getUserToken());
1109         copyFolder.setHeader("Accept", "*/*");
1110         copyFolder.setHeader("Content-Length", "0");
1111         copyFolder.setHeader("Content-Type", "application/directory");
1112         if(!f.getOwnerID().equals(targetUsername)) {
1113             copyFolder.setHeader("X-Source-Account", f.getOwnerID());
1114         }
1115         if(move) {
1116             copyFolder.setHeader("X-Move-From", URL.encodePathSegment(f.getUri()));
1117         }
1118         else {
1119             copyFolder.setHeader("X-Copy-From", URL.encodePathSegment(f.getUri()));
1120         }
1121         Scheduler.get().scheduleDeferred(copyFolder);
1122     }
1123
1124     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1125         selectionModels.add(model);
1126     }
1127
1128     public OtherSharedTreeView getOtherSharedTreeView() {
1129         return otherSharedTreeView;
1130     }
1131
1132     public void updateTrash(boolean showFiles, Command callback) {
1133         updateFolder(trash, showFiles, callback, true);
1134     }
1135
1136     public void updateGroupsNode() {
1137         groupTreeView.updateGroupNode(null);
1138     }
1139
1140     public Group addGroup(String groupname) {
1141         Group newGroup = new Group(groupname);
1142         account.addGroup(newGroup);
1143         groupTreeView.updateGroupNode(null);
1144         return newGroup;
1145     }
1146
1147     public void removeGroup(Group group) {
1148         account.removeGroup(group);
1149         updateGroupsNode();
1150     }
1151
1152     public TreeView getSelectedTree() {
1153         return selectedTree;
1154     }
1155
1156     public void setSelectedTree(TreeView selected) {
1157         selectedTree = selected;
1158     }
1159
1160     public Folder getSelection() {
1161         if(selectedTree != null) {
1162             return selectedTree.getSelection();
1163         }
1164         return null;
1165     }
1166
1167     public void showFolderStatistics(int folderFileCount) {
1168         numOfFiles.setHTML(String.valueOf(folderFileCount));
1169     }
1170
1171     public GroupTreeView getGroupTreeView() {
1172         return groupTreeView;
1173     }
1174
1175     public void sessionExpired() {
1176         new SessionExpiredDialog(this).center();
1177     }
1178
1179     public void updateRootFolder(Command callback) {
1180         updateFolder(account.getPithos(), false, callback, true);
1181     }
1182
1183     void createMySharedTree() {
1184         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1185         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1186             @Override
1187             public void onSelectionChange(SelectionChangeEvent event) {
1188                 if(mysharedTreeSelectionModel.getSelectedObject() != null) {
1189                     deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1190                     upload.setEnabled(false);
1191                     disableUploadArea();
1192                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1193                     showRelevantToolbarButtons();
1194                 }
1195                 else {
1196                     if(getSelectedTree().equals(mysharedTreeView)) {
1197                         setSelectedTree(null);
1198                     }
1199                     if(getSelectedTree() == null) {
1200                         showRelevantToolbarButtons();
1201                     }
1202                 }
1203             }
1204         });
1205         selectionModels.add(mysharedTreeSelectionModel);
1206         mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1207         mysharedTreeViewModel.initialize(new Command() {
1208
1209             @Override
1210             public void execute() {
1211                 mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1212                 trees.insert(mysharedTreeView, 2);
1213                 treeViews.add(mysharedTreeView);
1214                 createOtherSharedTree();
1215             }
1216         });
1217     }
1218
1219     void createOtherSharedTree() {
1220         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1221         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1222             @Override
1223             public void onSelectionChange(SelectionChangeEvent event) {
1224                 if(otherSharedTreeSelectionModel.getSelectedObject() != null) {
1225                     deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1226                     applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1227                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true, null);
1228                     showRelevantToolbarButtons();
1229                 }
1230                 else {
1231                     if(getSelectedTree().equals(otherSharedTreeView)) {
1232                         setSelectedTree(null);
1233                     }
1234                     if(getSelectedTree() == null) {
1235                         showRelevantToolbarButtons();
1236                     }
1237                 }
1238             }
1239         });
1240         selectionModels.add(otherSharedTreeSelectionModel);
1241         otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1242         otherSharedTreeViewModel.initialize(new Command() {
1243
1244             @Override
1245             public void execute() {
1246                 otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1247                 trees.insert(otherSharedTreeView, 1);
1248                 treeViews.add(otherSharedTreeView);
1249                 scheduleResfresh();
1250             }
1251         });
1252     }
1253
1254     public native void log1(String message)/*-{
1255       $wnd.console.log(message);
1256     }-*/;
1257
1258     public String getErrorData() {
1259         if(error != null) {
1260             return error.toString();
1261         }
1262         return "";
1263     }
1264
1265     public void setError(Throwable t) {
1266         error = t;
1267     }
1268
1269     public void showRelevantToolbarButtons() {
1270         toolbar.showRelevantButtons();
1271     }
1272
1273     public FileUploadDialog getFileUploadDialog() {
1274         if(fileUploadDialog == null) {
1275             fileUploadDialog = new FileUploadDialog(this);
1276         }
1277         return fileUploadDialog;
1278     }
1279
1280     public void hideUploadIndicator() {
1281         upload.removeStyleName("pithos-uploadButton-loading");
1282         upload.setTitle("");
1283     }
1284
1285     public void showUploadIndicator() {
1286         upload.addStyleName("pithos-uploadButton-loading");
1287         upload.setTitle("Upload in progress. Click for details.");
1288     }
1289
1290     public void scheduleFolderHeadCommand(final Folder folder, final Command callback) {
1291         if(folder == null) {
1292             if(callback != null) {
1293                 callback.execute();
1294             }
1295         }
1296         else {
1297             HeadRequest<Folder> headFolder = new HeadRequest<Folder>(Folder.class, getApiPath(), folder.getOwnerID(), folder.getUri(), folder) {
1298
1299                 @Override
1300                 public void onSuccess(Folder _result) {
1301                     if(callback != null) {
1302                         callback.execute();
1303                     }
1304                 }
1305
1306                 @Override
1307                 public void onError(Throwable t) {
1308                     if(t instanceof RestException) {
1309                         if(((RestException) t).getHttpStatusCode() == Response.SC_NOT_FOUND) {
1310                             final String path = folder.getUri();
1311                             PutRequest newFolder = new PutRequest(getApiPath(), folder.getOwnerID(), path) {
1312                                 @Override
1313                                 public void onSuccess(Resource _result) {
1314                                     scheduleFolderHeadCommand(folder, callback);
1315                                 }
1316
1317                                 @Override
1318                                 public void onError(Throwable _t) {
1319                                     GWT.log("", _t);
1320                                     setError(_t);
1321                                     if(_t instanceof RestException) {
1322                                         displayError("Unable to create folder: " + ((RestException) _t).getHttpStatusText());
1323                                     }
1324                                     else {
1325                                         displayError("System error creating folder: " + _t.getMessage());
1326                                     }
1327                                 }
1328
1329                                 @Override
1330                                 protected void onUnauthorized(Response response) {
1331                                     sessionExpired();
1332                                 }
1333                             };
1334                             newFolder.setHeader("X-Auth-Token", getUserToken());
1335                             newFolder.setHeader("Content-Type", "application/folder");
1336                             newFolder.setHeader("Accept", "*/*");
1337                             newFolder.setHeader("Content-Length", "0");
1338                             Scheduler.get().scheduleDeferred(newFolder);
1339                         }
1340                         else if(((RestException) t).getHttpStatusCode() == Response.SC_FORBIDDEN) {
1341                             onSuccess(folder);
1342                         }
1343                         else {
1344                             displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
1345                         }
1346                     }
1347                     else {
1348                         displayError("System error heading folder: " + t.getMessage());
1349                     }
1350
1351                     GWT.log("Error heading folder", t);
1352                     setError(t);
1353                 }
1354
1355                 @Override
1356                 protected void onUnauthorized(Response response) {
1357                     sessionExpired();
1358                 }
1359             };
1360             headFolder.setHeader("X-Auth-Token", getUserToken());
1361             Scheduler.get().scheduleDeferred(headFolder);
1362         }
1363     }
1364
1365     public void scheduleFileHeadCommand(File f, final Command callback) {
1366         HeadRequest<File> headFile = new HeadRequest<File>(File.class, getApiPath(), f.getOwnerID(), f.getUri(), f) {
1367
1368             @Override
1369             public void onSuccess(File _result) {
1370                 if(callback != null) {
1371                     callback.execute();
1372                 }
1373             }
1374
1375             @Override
1376             public void onError(Throwable t) {
1377                 GWT.log("Error heading file", t);
1378                 setError(t);
1379                 if(t instanceof RestException) {
1380                     displayError("Error heading file: " + ((RestException) t).getHttpStatusText());
1381                 }
1382                 else {
1383                     displayError("System error heading file: " + t.getMessage());
1384                 }
1385             }
1386
1387             @Override
1388             protected void onUnauthorized(Response response) {
1389                 sessionExpired();
1390             }
1391         };
1392         headFile.setHeader("X-Auth-Token", getUserToken());
1393         Scheduler.get().scheduleDeferred(headFile);
1394     }
1395
1396     public boolean isMySharedSelected() {
1397         return getSelectedTree().equals(getMySharedTreeView());
1398     }
1399
1400     private Folder getUploadFolder() {
1401         if(folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1402             return getSelection();
1403         }
1404         return null;
1405     }
1406
1407     private void updateUploadFolder() {
1408         updateUploadFolder(null);
1409     }
1410
1411     private void updateUploadFolder(final JsArrayString urls) {
1412         if(folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1413             Folder f = getSelection();
1414             if(getSelectedTree().equals(getFolderTreeView())) {
1415                 updateFolder(f, true, new Command() {
1416
1417                     @Override
1418                     public void execute() {
1419                         updateStatistics();
1420                         if(urls != null) {
1421                             selectUploadedFiles(urls);
1422                         }
1423                     }
1424                 }, false);
1425             }
1426             else {
1427                 updateOtherSharedFolder(f, true, null);
1428             }
1429         }
1430     }
1431
1432     public native void disableUploadArea() /*-{
1433       var uploader = $wnd.$("#uploader").pluploadQueue();
1434       var dropElm = $wnd.document.getElementById('rightPanel');
1435       $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1436     }-*/;
1437
1438     public native void enableUploadArea() /*-{
1439       var uploader = $wnd.$("#uploader").pluploadQueue();
1440       var dropElm = $wnd.document.getElementById('rightPanel');
1441       $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1442       if (uploader.runtime == 'html5') {
1443         uploader.settings.drop_element = 'rightPanel';
1444         uploader.trigger('PostInit');
1445       }
1446     }-*/;
1447
1448     public void showUploadAlert(int nOfFiles) {
1449         if(uploadAlert == null) {
1450             uploadAlert = new UploadAlert(this, nOfFiles);
1451         }
1452         if(!uploadAlert.isShowing()) {
1453             uploadAlert.setPopupPositionAndShow(new PopupPanel.PositionCallback() {
1454
1455                 @Override
1456                 public void setPosition(int offsetWidth, int offsetHeight) {
1457                     uploadAlert.setPopupPosition((Window.getClientWidth() - offsetWidth) / 2, statusPanel.getAbsoluteTop() - offsetHeight);
1458                 }
1459             });
1460         }
1461         uploadAlert.setNumOfFiles(nOfFiles);
1462     }
1463
1464     public void hideUploadAlert() {
1465         if(uploadAlert != null && uploadAlert.isShowing()) {
1466             uploadAlert.hide();
1467         }
1468     }
1469
1470     public void selectUploadedFiles(JsArrayString urls) {
1471         List<String> selectedUrls = new ArrayList<String>();
1472         for(int i = 0; i < urls.length(); i++) {
1473             selectedUrls.add(urls.get(i));
1474         }
1475         fileList.selectByUrl(selectedUrls);
1476     }
1477
1478     public void emptyContainer(final Folder container) {
1479         String path = "/" + container.getName() + "?delimiter=/";
1480         DeleteRequest delete = new DeleteRequest(getApiPath(), getUserID(), path) {
1481
1482             @Override
1483             protected void onUnauthorized(Response response) {
1484                 sessionExpired();
1485             }
1486
1487             @Override
1488             public void onSuccess(Resource result) {
1489                 updateFolder(container, true, null, true);
1490             }
1491
1492             @Override
1493             public void onError(Throwable t) {
1494                 GWT.log("Error deleting trash", t);
1495                 setError(t);
1496                 if(t instanceof RestException) {
1497                     displayError("Error deleting trash: " + ((RestException) t).getHttpStatusText());
1498                 }
1499                 else {
1500                     displayError("System error deleting trash: " + t.getMessage());
1501                 }
1502             }
1503         };
1504         delete.setHeader("X-Auth-Token", getUserToken());
1505         Scheduler.get().scheduleDeferred(delete);
1506     }
1507 }