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