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

   1 /*
   2  * Copyright 2011-2012 GRNET S.A. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or
   5  * without modification, are permitted provided that the following
   6  * conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above
   9  *      copyright notice, this list of conditions and the following
  10  *      disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials
  15  *      provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and
  31  * documentation are those of the authors and should not be
  32  * interpreted as representing official policies, either expressed
  33  * or implied, of GRNET S.A.
  34  */
  35 package gr.grnet.pithos.web.client;
  36
  37 import gr.grnet.pithos.web.client.commands.UploadFileCommand;
  38 import gr.grnet.pithos.web.client.foldertree.AccountResource;
  39 import gr.grnet.pithos.web.client.foldertree.File;
  40 import gr.grnet.pithos.web.client.foldertree.Folder;
  41 import gr.grnet.pithos.web.client.foldertree.FolderTreeView;
  42 import gr.grnet.pithos.web.client.foldertree.FolderTreeViewModel;
  43 import gr.grnet.pithos.web.client.foldertree.Resource;
  44 import gr.grnet.pithos.web.client.grouptree.Group;
  45 import gr.grnet.pithos.web.client.grouptree.GroupTreeView;
  46 import gr.grnet.pithos.web.client.grouptree.GroupTreeViewModel;
  47 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView;
  48 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeViewModel;
  49 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView;
  50 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeViewModel;
  51 import gr.grnet.pithos.web.client.rest.DeleteRequest;
  52 import gr.grnet.pithos.web.client.rest.GetRequest;
  53 import gr.grnet.pithos.web.client.rest.HeadRequest;
  54 import gr.grnet.pithos.web.client.rest.PutRequest;
  55 import gr.grnet.pithos.web.client.rest.RestException;
  56
  57 import java.util.ArrayList;
  58 import java.util.HashMap;
  59 import java.util.Iterator;
  60 import java.util.List;
  61 import java.util.Set;
  62
  63 import com.google.gwt.core.client.EntryPoint;
  64 import com.google.gwt.core.client.GWT;
  65 import com.google.gwt.core.client.JsArrayString;
  66 import com.google.gwt.core.client.Scheduler;
  67 import com.google.gwt.core.client.Scheduler.RepeatingCommand;
  68 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  69 import com.google.gwt.event.dom.client.ClickEvent;
  70 import com.google.gwt.event.dom.client.ClickHandler;
  71 import com.google.gwt.event.logical.shared.ResizeEvent;
  72 import com.google.gwt.event.logical.shared.ResizeHandler;
  73 import com.google.gwt.http.client.Request;
  74 import com.google.gwt.http.client.RequestBuilder;
  75 import com.google.gwt.http.client.RequestCallback;
  76 import com.google.gwt.http.client.RequestException;
  77 import com.google.gwt.http.client.Response;
  78 import com.google.gwt.http.client.URL;
  79 import com.google.gwt.i18n.client.Dictionary;
  80 import com.google.gwt.json.client.JSONArray;
  81 import com.google.gwt.json.client.JSONObject;
  82 import com.google.gwt.json.client.JSONParser;
  83 import com.google.gwt.json.client.JSONString;
  84 import com.google.gwt.json.client.JSONValue;
  85 import com.google.gwt.resources.client.ClientBundle;
  86 import com.google.gwt.resources.client.CssResource;
  87 import com.google.gwt.resources.client.ImageResource;
  88 import com.google.gwt.resources.client.ImageResource.ImageOptions;
  89 import com.google.gwt.user.client.Command;
  90 import com.google.gwt.user.client.Cookies;
  91 import com.google.gwt.user.client.Event;
  92 import com.google.gwt.user.client.History;
  93 import com.google.gwt.user.client.Window;
  94 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  95 import com.google.gwt.user.client.ui.Button;
  96 import com.google.gwt.user.client.ui.Composite;
  97 import com.google.gwt.user.client.ui.FlowPanel;
  98 import com.google.gwt.user.client.ui.HTML;
  99 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
 100 import com.google.gwt.user.client.ui.HasVerticalAlignment;
 101 import com.google.gwt.user.client.ui.HorizontalPanel;
 102 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
 103 import com.google.gwt.user.client.ui.PopupPanel;
 104 import com.google.gwt.user.client.ui.RootPanel;
 105 import com.google.gwt.user.client.ui.VerticalPanel;
 106 import com.google.gwt.view.client.SelectionChangeEvent;
 107 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
 108 import com.google.gwt.view.client.SingleSelectionModel;
 109
 110 /**
 111  * Entry point classes define <code>onModuleLoad()</code>.
 112  */
 113 public class Pithos implements EntryPoint, ResizeHandler {
 114
 115         public static final String HOME_CONTAINER = "pithos";
 116
 117         public static final String TRASH_CONTAINER = "trash";
 118
 119         public static final Configuration config = GWT.create(Configuration.class);
 120
 121         public interface Style extends CssResource {
 122                 String commandAnchor();
 123
 124                 String statistics();
 125
 126                 @ClassName("gwt-HTML")
 127                 String html();
 128
 129                 String uploadAlert();
 130
 131                 String uploadAlertLink();
 132
 133                 String uploadAlertProgress();
 134
 135                 String uploadAlertPercent();
 136
 137                 String uploadAlertClose();
 138         }
 139
 140         public interface Resources extends ClientBundle {
 141                 @Source("Pithos.css")
 142                 Style pithosCss();
 143
 144                 @Source("gr/grnet/pithos/resources/close-popup.png")
 145                 ImageResource closePopup();
 146         }
 147
 148         public static Resources resources = GWT.create(Resources.class);
 149
 150         /**
 151          * Instantiate an application-level image bundle. This object will provide
 152          * programmatic access to all the images needed by widgets.
 153          */
 154         static Images images = (Images) GWT.create(Images.class);
 155
 156     public String getUsername() {
 157         return username;
 158     }
 159
 160     public void setAccount(AccountResource acct) {
 161         account = acct;
 162     }
 163
 164     public AccountResource getAccount() {
 165         return account;
 166     }
 167
 168     public void updateFolder(Folder f, boolean showfiles, Command callback, final boolean openParent) {
 169         folderTreeView.updateFolder(f, showfiles, callback, openParent);
 170     }
 171
 172     public void updateGroupNode(Group group) {
 173         groupTreeView.updateGroupNode(group);
 174     }
 175
 176     public void updateMySharedRoot() {
 177         mysharedTreeView.updateRoot();
 178     }
 179
 180     public void updateSharedFolder(Folder f, boolean showfiles, Command callback) {
 181         mysharedTreeView.updateFolder(f, showfiles, callback);
 182     }
 183
 184     public void updateSharedFolder(Folder f, boolean showfiles) {
 185         updateSharedFolder(f, showfiles, null);
 186     }
 187
 188     public void updateOtherSharedFolder(Folder f, boolean showfiles, Command callback) {
 189         otherSharedTreeView.updateFolder(f, showfiles, callback);
 190     }
 191
 192     public MysharedTreeView getMySharedTreeView() {
 193         return mysharedTreeView;
 194     }
 195
 196     /**
 197          * An aggregate image bundle that pulls together all the images for this
 198          * application into a single bundle.
 199          */
 200         public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 201
 202                 @Source("gr/grnet/pithos/resources/document.png")
 203                 ImageResource folders();
 204
 205                 @Source("gr/grnet/pithos/resources/advancedsettings.png")
 206                 @ImageOptions(width=32, height=32)
 207                 ImageResource tools();
 208         }
 209
 210         private Throwable error;
 211
 212         /**
 213          * The Application Clipboard implementation;
 214          */
 215         private Clipboard clipboard = new Clipboard();
 216
 217         /**
 218          * The top panel that contains the menu bar.
 219          */
 220         private TopPanel topPanel;
 221
 222         /**
 223          * The panel that contains the various system messages.
 224          */
 225         private MessagePanel messagePanel = new MessagePanel(this, Pithos.images);
 226
 227         /**
 228          * The bottom panel that contains the status bar.
 229          */
 230         private StatusPanel statusPanel = null;
 231
 232         /**
 233          * The file list widget.
 234          */
 235         private FileList fileList;
 236
 237         /**
 238          * The tab panel that occupies the right side of the screen.
 239          */
 240         private VerticalPanel inner = new VerticalPanel();
 241
 242
 243         /**
 244          * The split panel that will contain the left and right panels.
 245          */
 246         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 247
 248         /**
 249          * The currently selected item in the application, for use by the Edit menu
 250          * commands. Potential types are Folder, File, User and Group.
 251          */
 252         private Object currentSelection;
 253
 254         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 255
 256     private String username = null;
 257
 258     /**
 259      * The authentication token of the current user.
 260      */
 261     private String token;
 262
 263     VerticalPanel trees;
 264
 265     SingleSelectionModel<Folder> folderTreeSelectionModel;
 266     FolderTreeViewModel folderTreeViewModel;
 267     FolderTreeView folderTreeView;
 268
 269     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 270     MysharedTreeViewModel mysharedTreeViewModel;
 271     MysharedTreeView mysharedTreeView = null;;
 272
 273     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 274     OtherSharedTreeViewModel otherSharedTreeViewModel;
 275     OtherSharedTreeView otherSharedTreeView = null;
 276
 277     GroupTreeViewModel groupTreeViewModel;
 278     GroupTreeView groupTreeView;
 279
 280     TreeView selectedTree;
 281     protected AccountResource account;
 282
 283     Folder trash;
 284
 285     List<Composite> treeViews = new ArrayList<Composite>();
 286
 287     @SuppressWarnings("rawtypes") List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 288
 289     public Button upload;
 290
 291     private HTML numOfFiles;
 292
 293     private Toolbar toolbar;
 294
 295     private FileUploadDialog fileUploadDialog = new FileUploadDialog(this);
 296
 297         UploadAlert uploadAlert;
 298
 299         @Override
 300         public void onModuleLoad() {
 301                 if (parseUserCredentials())
 302             initialize();
 303         }
 304
 305     private void initialize() {
 306         resources.pithosCss().ensureInjected();
 307         boolean bareContent = Window.Location.getParameter("noframe") != null;
 308         String contentWidth = bareContent ? "100%" : "75%";
 309
 310         VerticalPanel outer = new VerticalPanel();
 311         outer.setWidth("100%");
 312         if (!bareContent) {
 313                 outer.addStyleName("pithos-outer");
 314         }
 315
 316         if (!bareContent) {
 317                 topPanel = new TopPanel(this, Pithos.images);
 318                 topPanel.setWidth("100%");
 319                 outer.add(topPanel);
 320                 outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 321         }
 322
 323         messagePanel.setVisible(false);
 324         outer.add(messagePanel);
 325         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 326         outer.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
 327
 328         HorizontalPanel header = new HorizontalPanel();
 329         header.addStyleName("pithos-header");
 330         header.setWidth(contentWidth);
 331         if (bareContent)
 332                 header.addStyleName("pithos-header-noframe");
 333         upload = new Button("Upload", new ClickHandler() {
 334             @Override
 335             public void onClick(ClickEvent event) {
 336                 if (getSelection() != null)
 337                         new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 338             }
 339         });
 340         upload.addStyleName("pithos-uploadButton");
 341         header.add(upload);
 342         header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 343         header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 344
 345         toolbar = new Toolbar(this);
 346         header.add(toolbar);
 347         header.setCellHorizontalAlignment(toolbar, HasHorizontalAlignment.ALIGN_CENTER);
 348         header.setCellVerticalAlignment(toolbar, HasVerticalAlignment.ALIGN_MIDDLE);
 349
 350         HorizontalPanel folderStatistics = new HorizontalPanel();
 351         folderStatistics.addStyleName("pithos-folderStatistics");
 352         numOfFiles = new HTML();
 353         folderStatistics.add(numOfFiles);
 354         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 355         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 356         folderStatistics.add(numOfFilesLabel);
 357         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 358         header.add(folderStatistics);
 359         header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 360         header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
 361         header.setCellWidth(folderStatistics, "40px");
 362         outer.add(header);
 363         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 364         // Inner contains the various lists
 365         inner.sinkEvents(Event.ONCONTEXTMENU);
 366         inner.setWidth("100%");
 367
 368         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 369         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 370             @Override
 371             public void onSelectionChange(SelectionChangeEvent event) {
 372                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 373                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 374                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 375                     Folder f = folderTreeSelectionModel.getSelectedObject();
 376                         updateFolder(f, true, new Command() {
 377
 378                                 @Override
 379                                 public void execute() {
 380                                         updateStatistics();
 381                                 }
 382                         }, true);
 383                         showRelevantToolbarButtons();
 384                 }
 385                                 else {
 386                                         if (getSelectedTree().equals(folderTreeView))
 387                                                 setSelectedTree(null);
 388                                         if (getSelectedTree() == null)
 389                                                 showRelevantToolbarButtons();
 390                                 }
 391             }
 392         });
 393         selectionModels.add(folderTreeSelectionModel);
 394
 395         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 396         folderTreeView = new FolderTreeView(folderTreeViewModel);
 397         treeViews.add(folderTreeView);
 398
 399         fileList = new FileList(this, images);
 400         inner.add(fileList);
 401
 402         trees = new VerticalPanel();
 403         trees.setWidth("100%");
 404
 405         // Add the left and right panels to the split panel.
 406         splitPanel.setLeftWidget(trees);
 407         FlowPanel right = new FlowPanel();
 408         right.getElement().setId("rightPanel");
 409         right.add(inner);
 410         splitPanel.setRightWidget(right);
 411         splitPanel.setSplitPosition("219px");
 412         splitPanel.setSize("100%", "100%");
 413         splitPanel.addStyleName("pithos-splitPanel");
 414         splitPanel.setWidth(contentWidth);
 415         outer.add(splitPanel);
 416         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 417
 418         if (!bareContent) {
 419                 statusPanel = new StatusPanel();
 420                 statusPanel.setWidth("100%");
 421                 outer.add(statusPanel);
 422                 outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 423         }
 424         else
 425                 splitPanel.addStyleName("pithos-splitPanel-noframe");
 426
 427         // Hook the window resize event, so that we can adjust the UI.
 428         Window.addResizeHandler(this);
 429         // Clear out the window's built-in margin, because we want to take
 430         // advantage of the entire client area.
 431         Window.setMargin("0px");
 432         // Finally, add the outer panel to the RootPanel, so that it will be
 433         // displayed.
 434         RootPanel.get().add(outer);
 435         // Call the window resized handler to get the initial sizes setup. Doing
 436         // this in a deferred command causes it to occur after all widgets'
 437         // sizes have been computed by the browser.
 438         Scheduler.get().scheduleIncremental(new RepeatingCommand() {
 439
 440                         @Override
 441                         public boolean execute() {
 442                                 if (!isCloudbarReady())
 443                                         return true;
 444                 onWindowResized(Window.getClientHeight());
 445                                 return false;
 446                         }
 447                 });
 448
 449         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 450             @Override
 451             public void execute() {
 452                 fetchAccount(new Command() {
 453
 454                                         @Override
 455                                         public void execute() {
 456                                 if (!account.hasHomeContainer())
 457                                     createHomeContainer(account, this);
 458                                 else if (!account.hasTrashContainer())
 459                                         createTrashContainer(this);
 460                                 else {
 461                                         for (Folder f : account.getContainers())
 462                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 463                                                         trash = f;
 464                                                         break;
 465                                                 }
 466                                     trees.add(folderTreeView);
 467                                     folderTreeViewModel.initialize(account, new Command() {
 468
 469                                                                 @Override
 470                                                                 public void execute() {
 471                                                     createMySharedTree();
 472                                                                 }
 473                                                         });
 474
 475                                     HorizontalPanel separator = new HorizontalPanel();
 476                                     separator.addStyleName("pithos-statisticsSeparator");
 477                                     separator.add(new HTML(""));
 478                                     trees.add(separator);
 479
 480                                     groupTreeViewModel = new GroupTreeViewModel(Pithos.this);
 481                                     groupTreeView = new GroupTreeView(groupTreeViewModel);
 482                                     treeViews.add(groupTreeView);
 483                                     trees.add(groupTreeView);
 484                                     folderTreeView.showStatistics(account);
 485                                 }
 486                                         }
 487                                 });
 488             }
 489         });
 490
 491         Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
 492
 493                         @Override
 494                         public boolean execute() {
 495                                 Folder f = getSelection();
 496                                 if (f != null) {
 497                                         if (getSelectedTree().equals(folderTreeView))
 498                                                 updateFolder(f, true, null, false);
 499                                         else if (getSelectedTree().equals(mysharedTreeView))
 500                                                 updateSharedFolder(f, true);
 501                                 }
 502                                 return true;
 503                         }
 504                 }, 3000);
 505     }
 506
 507     public void applyPermissions(Folder f) {
 508         if (f != null) {
 509                 if (f.isInTrash()) {
 510                         upload.setEnabled(false);
 511                         disableUploadArea();
 512                 }
 513                 else {
 514                         Boolean[] perms = f.getPermissions().get(username);
 515                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 516                                 upload.setEnabled(true);
 517                                 enableUploadArea();
 518                         }
 519                         else {
 520                                 upload.setEnabled(false);
 521                                 disableUploadArea();
 522                         }
 523                 }
 524         }
 525         else {
 526                 upload.setEnabled(false);
 527                 disableUploadArea();
 528         }
 529         }
 530
 531         @SuppressWarnings({ "rawtypes", "unchecked" })
 532         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 533         selectedTree = _selectedTree;
 534
 535         for (SingleSelectionModel s : selectionModels)
 536             if (!s.equals(model) && s.getSelectedObject() != null)
 537                 s.setSelected(s.getSelectedObject(), false);
 538     }
 539
 540     public void showFiles(final Folder f) {
 541         Set<File> files = f.getFiles();
 542         showFiles(files);
 543     }
 544
 545     public void showFiles(Set<File> files) {
 546         fileList.setFiles(new ArrayList<File>(files));
 547     }
 548
 549     /**
 550          * Parse and store the user credentials to the appropriate fields.
 551          */
 552         private boolean parseUserCredentials() {
 553         Configuration conf = (Configuration) GWT.create(Configuration.class);
 554                 Dictionary otherProperties = Dictionary.getDictionary("otherProperties");
 555         String cookie = otherProperties.get("authCookie");
 556         String auth = Cookies.getCookie(cookie);
 557         if (auth == null) {
 558             authenticateUser();
 559             return false;
 560         }
 561         if (auth.startsWith("\""))
 562                 auth = auth.substring(1);
 563         if (auth.endsWith("\""))
 564                 auth = auth.substring(0, auth.length() - 1);
 565                 String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 566                 if (authSplit.length != 2) {
 567                     authenticateUser();
 568                     return false;
 569                 }
 570                 username = authSplit[0];
 571                 token = authSplit[1];
 572
 573         String gotoUrl = Window.Location.getParameter("goto");
 574                 if (gotoUrl != null && gotoUrl.length() > 0) {
 575                         Window.Location.assign(gotoUrl);
 576                         return false;
 577                 }
 578                 return true;
 579     }
 580
 581     /**
 582          * Redirect the user to the login page for authentication.
 583          */
 584         protected void authenticateUser() {
 585                 Dictionary otherProperties = Dictionary.getDictionary("otherProperties");
 586         Window.Location.assign(otherProperties.get("loginUrl") + Window.Location.getHref());
 587         }
 588
 589         public void fetchAccount(final Command callback) {
 590         String path = "?format=json";
 591
 592         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 593             @Override
 594             public void onSuccess(AccountResource _result) {
 595                 account = _result;
 596                 if (callback != null)
 597                         callback.execute();
 598             }
 599
 600             @Override
 601             public void onError(Throwable t) {
 602                 GWT.log("Error getting account", t);
 603                                 setError(t);
 604                 if (t instanceof RestException)
 605                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 606                 else
 607                     displayError("System error fetching user data: " + t.getMessage());
 608             }
 609
 610                         @Override
 611                         protected void onUnauthorized(Response response) {
 612                                 sessionExpired();
 613                         }
 614         };
 615         getAccount.setHeader("X-Auth-Token", token);
 616         Scheduler.get().scheduleDeferred(getAccount);
 617     }
 618
 619     public void updateStatistics() {
 620         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 621
 622                         @Override
 623                         public void onSuccess(AccountResource _result) {
 624                                 folderTreeView.showStatistics(account);
 625                         }
 626
 627                         @Override
 628                         public void onError(Throwable t) {
 629                 GWT.log("Error getting account", t);
 630                                 setError(t);
 631                 if (t instanceof RestException)
 632                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 633                 else
 634                     displayError("System error fetching user data: " + t.getMessage());
 635                         }
 636
 637                         @Override
 638                         protected void onUnauthorized(Response response) {
 639                                 sessionExpired();
 640                         }
 641                 };
 642                 headAccount.setHeader("X-Auth-Token", token);
 643                 Scheduler.get().scheduleDeferred(headAccount);
 644         }
 645
 646         protected void createHomeContainer(final AccountResource _account, final Command callback) {
 647         String path = "/" + Pithos.HOME_CONTAINER;
 648         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 649             @Override
 650             public void onSuccess(Resource result) {
 651                 if (!_account.hasTrashContainer())
 652                         createTrashContainer(callback);
 653                 else
 654                         fetchAccount(callback);
 655             }
 656
 657             @Override
 658             public void onError(Throwable t) {
 659                 GWT.log("Error creating pithos", t);
 660                                 setError(t);
 661                 if (t instanceof RestException)
 662                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 663                 else
 664                     displayError("System error Error creating pithos: " + t.getMessage());
 665             }
 666
 667                         @Override
 668                         protected void onUnauthorized(Response response) {
 669                                 sessionExpired();
 670                         }
 671         };
 672         createPithos.setHeader("X-Auth-Token", getToken());
 673         Scheduler.get().scheduleDeferred(createPithos);
 674     }
 675
 676     protected void createTrashContainer(final Command callback) {
 677         String path = "/" + Pithos.TRASH_CONTAINER;
 678         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 679             @Override
 680             public void onSuccess(Resource result) {
 681                         fetchAccount(callback);
 682             }
 683
 684             @Override
 685             public void onError(Throwable t) {
 686                 GWT.log("Error creating pithos", t);
 687                                 setError(t);
 688                 if (t instanceof RestException)
 689                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 690                 else
 691                     displayError("System error Error creating pithos: " + t.getMessage());
 692             }
 693
 694                         @Override
 695                         protected void onUnauthorized(Response response) {
 696                                 sessionExpired();
 697                         }
 698         };
 699         createPithos.setHeader("X-Auth-Token", getToken());
 700         Scheduler.get().scheduleDeferred(createPithos);
 701     }
 702
 703     /**
 704          * Creates an HTML fragment that places an image & caption together, for use
 705          * in a group header.
 706          *
 707          * @param imageProto an image prototype for an image
 708          * @param caption the group caption
 709          * @return the header HTML fragment
 710          */
 711         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 712                 String captionHTML = "<table class='caption' cellpadding='0' "
 713                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 714                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 715                 + caption + "</b></td></tr></table>";
 716                 return captionHTML;
 717         }
 718
 719         protected void onWindowResized(int height) {
 720                 // Adjust the split panel to take up the available room in the window.
 721                 int newHeight = height - splitPanel.getAbsoluteTop() - 153;
 722                 if (newHeight < 1)
 723                         newHeight = 1;
 724                 splitPanel.setHeight("" + newHeight);
 725                 inner.setHeight("" + newHeight);
 726         }
 727
 728         native boolean isCloudbarReady()/*-{
 729                 if ($wnd.$("div.servicesbar") && $wnd.$("div.servicesbar").height() > 0)
 730                         return true;
 731                 return false;
 732         }-*/;
 733
 734         @Override
 735         public void onResize(ResizeEvent event) {
 736                 int height = event.getHeight();
 737                 onWindowResized(height);
 738         }
 739
 740         /**
 741          * Display an error message.
 742          *
 743          * @param msg the message to display
 744          */
 745         public void displayError(String msg) {
 746                 messagePanel.displayError(msg);
 747         }
 748
 749         /**
 750          * Display a warning message.
 751          *
 752          * @param msg the message to display
 753          */
 754         public void displayWarning(String msg) {
 755                 messagePanel.displayWarning(msg);
 756         }
 757
 758         /**
 759          * Display an informational message.
 760          *
 761          * @param msg the message to display
 762          */
 763         public void displayInformation(String msg) {
 764                 messagePanel.displayInformation(msg);
 765         }
 766
 767         /**
 768          * Retrieve the fileList.
 769          *
 770          * @return the fileList
 771          */
 772         public FileList getFileList() {
 773                 return fileList;
 774         }
 775
 776         /**
 777          * Retrieve the topPanel.
 778          *
 779          * @return the topPanel
 780          */
 781         TopPanel getTopPanel() {
 782                 return topPanel;
 783         }
 784
 785         /**
 786          * Retrieve the clipboard.
 787          *
 788          * @return the clipboard
 789          */
 790         public Clipboard getClipboard() {
 791                 return clipboard;
 792         }
 793
 794         public StatusPanel getStatusPanel() {
 795                 return statusPanel;
 796         }
 797
 798         public String getToken() {
 799                 return token;
 800         }
 801
 802         public static native void preventIESelection() /*-{
 803                 $doc.body.onselectstart = function () { return false; };
 804         }-*/;
 805
 806         public static native void enableIESelection() /*-{
 807                 if ($doc.body.onselectstart != null)
 808                 $doc.body.onselectstart = null;
 809         }-*/;
 810
 811         /**
 812          * @return the absolute path of the API root URL
 813          */
 814         public String getApiPath() {
 815                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 816                 return conf.apiPath();
 817         }
 818
 819         /**
 820          * History support for folder navigation
 821          * adds a new browser history entry
 822          *
 823          * @param key
 824          */
 825         public void updateHistory(String key){
 826 //              Replace any whitespace of the initial string to "+"
 827 //              String result = key.replaceAll("\\s","+");
 828 //              Add a new browser history entry.
 829 //              History.newItem(result);
 830                 History.newItem(key);
 831         }
 832
 833     public void deleteFolder(final Folder folder, final Command callback) {
 834         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(folder.getPrefix()) + "&t=" + System.currentTimeMillis();
 835         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 836         builder.setHeader("X-Auth-Token", getToken());
 837         try {
 838             builder.sendRequest("", new RequestCallback() {
 839                 @Override
 840                 public void onResponseReceived(Request request, Response response) {
 841                     if (response.getStatusCode() == Response.SC_OK) {
 842                         JSONValue json = JSONParser.parseStrict(response.getText());
 843                         JSONArray array = json.isArray();
 844                         int i = 0;
 845                         if (array != null) {
 846                             deleteObject(folder, i, array, callback);
 847                         }
 848                     }
 849                 }
 850
 851                 @Override
 852                 public void onError(Request request, Throwable exception) {
 853                         setError(exception);
 854                     displayError("System error unable to delete folder: " + exception.getMessage());
 855                 }
 856             });
 857         }
 858         catch (RequestException e) {
 859         }
 860     }
 861
 862     void deleteObject(final Folder folder, final int i, final JSONArray array, final Command callback) {
 863         if (i < array.size()) {
 864             JSONObject o = array.get(i).isObject();
 865             if (o != null && !o.containsKey("subdir")) {
 866                 JSONString name = o.get("name").isString();
 867                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 868                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), URL.encode(path)) {
 869                     @Override
 870                     public void onSuccess(Resource result) {
 871                         deleteObject(folder, i + 1, array, callback);
 872                     }
 873
 874                     @Override
 875                     public void onError(Throwable t) {
 876                         GWT.log("", t);
 877                                                 setError(t);
 878                         displayError("System error unable to delete folder: " + t.getMessage());
 879                     }
 880
 881                                 @Override
 882                                 protected void onUnauthorized(Response response) {
 883                                         sessionExpired();
 884                                 }
 885                 };
 886                 delete.setHeader("X-Auth-Token", getToken());
 887                 Scheduler.get().scheduleDeferred(delete);
 888             }
 889             else if (o != null) {
 890                 String subdir = o.get("subdir").isString().stringValue();
 891                 subdir = subdir.substring(0, subdir.length() - 1);
 892                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(subdir) + "&t=" + System.currentTimeMillis();
 893                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 894                 builder.setHeader("X-Auth-Token", getToken());
 895                 try {
 896                     builder.sendRequest("", new RequestCallback() {
 897                         @Override
 898                         public void onResponseReceived(Request request, Response response) {
 899                             if (response.getStatusCode() == Response.SC_OK) {
 900                                 JSONValue json = JSONParser.parseStrict(response.getText());
 901                                 JSONArray array2 = json.isArray();
 902                                 if (array2 != null) {
 903                                     int l = array.size();
 904                                     for (int j=0; j<array2.size(); j++) {
 905                                         array.set(l++, array2.get(j));
 906                                     }
 907                                 }
 908                                 deleteObject(folder, i + 1, array, callback);
 909                             }
 910                         }
 911
 912                         @Override
 913                         public void onError(Request request, Throwable exception) {
 914                                 setError(exception);
 915                             displayError("System error unable to delete folder: " + exception.getMessage());
 916                         }
 917                     });
 918                 }
 919                 catch (RequestException e) {
 920                 }
 921             }
 922         }
 923         else {
 924             String path = folder.getUri();
 925             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), URL.encode(path)) {
 926                 @Override
 927                 public void onSuccess(Resource result) {
 928                     updateFolder(folder.getParent(), true, new Command() {
 929
 930                                                 @Override
 931                                                 public void execute() {
 932                                                         folderTreeSelectionModel.setSelected(folder.getParent(), true);
 933                                                         updateStatistics();
 934                                                         if (callback != null)
 935                                                                 callback.execute();
 936                                                 }
 937                                         }, true);
 938                 }
 939
 940                 @Override
 941                 public void onError(Throwable t) {
 942                     GWT.log("", t);
 943                                         setError(t);
 944                     if (t instanceof RestException) {
 945                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 946                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 947                         else
 948                                 onSuccess(null);
 949                     }
 950                     else
 951                         displayError("System error unable to delete folder: " + t.getMessage());
 952                 }
 953
 954                                 @Override
 955                                 protected void onUnauthorized(Response response) {
 956                                         sessionExpired();
 957                                 }
 958             };
 959             deleteFolder.setHeader("X-Auth-Token", getToken());
 960             Scheduler.get().scheduleDeferred(deleteFolder);
 961         }
 962     }
 963
 964     public FolderTreeView getFolderTreeView() {
 965         return folderTreeView;
 966     }
 967
 968     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 969         if (iter.hasNext()) {
 970             File file = iter.next();
 971             String path = targetUri + "/" + file.getName();
 972             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 973                 @Override
 974                 public void onSuccess(Resource result) {
 975                     copyFiles(iter, targetUsername, targetUri, callback);
 976                 }
 977
 978                 @Override
 979                 public void onError(Throwable t) {
 980                     GWT.log("", t);
 981                                         setError(t);
 982                     if (t instanceof RestException) {
 983                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 984                     }
 985                     else
 986                         displayError("System error unable to copy file: "+t.getMessage());
 987                 }
 988
 989                                 @Override
 990                                 protected void onUnauthorized(Response response) {
 991                                         sessionExpired();
 992                                 }
 993             };
 994             copyFile.setHeader("X-Auth-Token", getToken());
 995             copyFile.setHeader("X-Copy-From", URL.encodePathSegment(file.getUri()));
 996             if (!file.getOwner().equals(targetUsername))
 997                 copyFile.setHeader("X-Source-Account", URL.encodePathSegment(file.getOwner()));
 998             copyFile.setHeader("Content-Type", file.getContentType());
 999             Scheduler.get().scheduleDeferred(copyFile);
1000         }
1001         else  if (callback != null) {
1002             callback.execute();
1003         }
1004     }
1005
1006     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
1007         if (iter.hasNext()) {
1008             final Folder f = iter.next();
1009             copyFolder(f, targetUsername, targetUri, new Command() {
1010
1011                                 @Override
1012                                 public void execute() {
1013                                         copySubfolders(iter, targetUsername, targetUri, callback);
1014                                 }
1015                         });
1016         }
1017         else  if (callback != null) {
1018             callback.execute();
1019         }
1020     }
1021
1022     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
1023         String path = targetUri + "/" + f.getName();
1024         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
1025             @Override
1026             public void onSuccess(Resource result) {
1027                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix()), f) {
1028
1029                                         @Override
1030                                         public void onSuccess(final Folder _f) {
1031                                 Iterator<File> iter = _f.getFiles().iterator();
1032                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
1033                                     @Override
1034                                     public void execute() {
1035                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
1036                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
1037                                     }
1038                                 });
1039                                         }
1040
1041                                         @Override
1042                                         public void onError(Throwable t) {
1043                                 GWT.log("", t);
1044                                                 setError(t);
1045                                 if (t instanceof RestException) {
1046                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
1047                                 }
1048                                 else
1049                                     displayError("System error getting folder: " + t.getMessage());
1050                                         }
1051
1052                                         @Override
1053                                         protected void onUnauthorized(Response response) {
1054                                                 sessionExpired();
1055                                         }
1056                                 };
1057                                 getFolder.setHeader("X-Auth-Token", getToken());
1058                                 Scheduler.get().scheduleDeferred(getFolder);
1059             }
1060
1061             @Override
1062             public void onError(Throwable t) {
1063                 GWT.log("", t);
1064                                 setError(t);
1065                if (t instanceof RestException) {
1066                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
1067                 }
1068                 else
1069                     displayError("System error creating folder: " + t.getMessage());
1070             }
1071
1072                         @Override
1073                         protected void onUnauthorized(Response response) {
1074                                 sessionExpired();
1075                         }
1076         };
1077         createFolder.setHeader("X-Auth-Token", getToken());
1078         createFolder.setHeader("Accept", "*/*");
1079         createFolder.setHeader("Content-Length", "0");
1080         createFolder.setHeader("Content-Type", "application/folder");
1081         Scheduler.get().scheduleDeferred(createFolder);
1082     }
1083
1084     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1085         selectionModels.add(model);
1086     }
1087
1088         public OtherSharedTreeView getOtherSharedTreeView() {
1089                 return otherSharedTreeView;
1090         }
1091
1092         public void updateTrash(boolean showFiles, Command callback) {
1093                 updateFolder(trash, showFiles, callback, true);
1094         }
1095
1096         public void updateGroupsNode() {
1097                 groupTreeView.updateGroupNode(null);
1098         }
1099
1100         public Group addGroup(String groupname) {
1101                 Group newGroup = new Group(groupname);
1102                 account.addGroup(newGroup);
1103                 groupTreeView.updateGroupNode(null);
1104                 return newGroup;
1105         }
1106
1107         public void removeGroup(Group group) {
1108                 account.removeGroup(group);
1109                 updateGroupsNode();
1110         }
1111
1112         public TreeView getSelectedTree() {
1113                 return selectedTree;
1114         }
1115
1116         public void setSelectedTree(TreeView selected) {
1117                 selectedTree = selected;
1118         }
1119
1120         public Folder getSelection() {
1121                 if (selectedTree != null)
1122                         return selectedTree.getSelection();
1123                 return null;
1124         }
1125
1126         public void showFolderStatistics(int folderFileCount) {
1127                 numOfFiles.setHTML(String.valueOf(folderFileCount));
1128         }
1129
1130         public GroupTreeView getGroupTreeView() {
1131                 return groupTreeView;
1132         }
1133
1134         public void sessionExpired() {
1135                 new SessionExpiredDialog(this).center();
1136         }
1137
1138         public void updateRootFolder(Command callback) {
1139                 updateFolder(account.getPithos(), false, callback, true);
1140         }
1141
1142         void createMySharedTree() {
1143                 mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1144                 mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1145                     @Override
1146                     public void onSelectionChange(SelectionChangeEvent event) {
1147                         if (mysharedTreeSelectionModel.getSelectedObject() != null) {
1148                             deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1149                             upload.setEnabled(false);
1150                             disableUploadArea();
1151                             updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1152                                         showRelevantToolbarButtons();
1153                         }
1154                                 else {
1155                                         if (getSelectedTree().equals(mysharedTreeView))
1156                                                 setSelectedTree(null);
1157                                         if (getSelectedTree() == null)
1158                                                 showRelevantToolbarButtons();
1159                                 }
1160                     }
1161                 });
1162                 selectionModels.add(mysharedTreeSelectionModel);
1163                 mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1164                 mysharedTreeViewModel.initialize(new Command() {
1165
1166                         @Override
1167                         public void execute() {
1168                             mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1169                                 trees.insert(mysharedTreeView, 2);
1170                                 treeViews.add(mysharedTreeView);
1171                                 createOtherSharedTree();
1172                         }
1173                 });
1174         }
1175
1176         void createOtherSharedTree() {
1177                 otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1178                 otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1179                     @Override
1180                     public void onSelectionChange(SelectionChangeEvent event) {
1181                         if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
1182                             deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1183                             applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1184                             updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true, null);
1185                                         showRelevantToolbarButtons();
1186                         }
1187                                 else {
1188                                         if (getSelectedTree().equals(otherSharedTreeView))
1189                                                 setSelectedTree(null);
1190                                         if (getSelectedTree() == null)
1191                                                 showRelevantToolbarButtons();
1192                                 }
1193                     }
1194                 });
1195                 selectionModels.add(otherSharedTreeSelectionModel);
1196                 otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1197                 otherSharedTreeViewModel.initialize(new Command() {
1198
1199                         @Override
1200                         public void execute() {
1201                             otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1202                                 trees.insert(otherSharedTreeView, 1);
1203                                 treeViews.add(otherSharedTreeView);
1204                         }
1205                 });
1206         }
1207
1208         public native void log1(String message)/*-{
1209                 $wnd.console.log(message);
1210         }-*/;
1211
1212         public String getErrorData() {
1213                 if (error != null)
1214                         return error.toString();
1215                 return "";
1216         }
1217
1218         public void setError(Throwable t) {
1219                 error = t;
1220         }
1221
1222         public void showRelevantToolbarButtons() {
1223                 toolbar.showRelevantButtons();
1224         }
1225
1226         public FileUploadDialog getFileUploadDialog() {
1227                 if (fileUploadDialog == null)
1228                         fileUploadDialog = new FileUploadDialog(this);
1229                 return fileUploadDialog;
1230         }
1231
1232         public void hideUploadIndicator() {
1233                 upload.removeStyleName("pithos-uploadButton-loading");
1234                 upload.setTitle("");
1235         }
1236
1237         public void showUploadIndicator() {
1238                 upload.addStyleName("pithos-uploadButton-loading");
1239                 upload.setTitle("Upload in progress. Click for details.");
1240         }
1241
1242         public void scheduleFolderHeadCommand(final Folder folder, final Command callback) {
1243                 if (folder == null) {
1244                         if (callback != null)
1245                                 callback.execute();
1246                 }
1247                 else {
1248                         HeadRequest<Folder> headFolder = new HeadRequest<Folder>(Folder.class, getApiPath(), folder.getOwner(), folder.getUri(), folder) {
1249
1250                                 @Override
1251                                 public void onSuccess(Folder _result) {
1252                                         if (callback != null)
1253                                                 callback.execute();
1254                                 }
1255
1256                                 @Override
1257                                 public void onError(Throwable t) {
1258                                 if (t instanceof RestException) {
1259                                         if (((RestException) t).getHttpStatusCode() == Response.SC_NOT_FOUND) {
1260                                 final String path = folder.getUri();
1261                                 PutRequest newFolder = new PutRequest(getApiPath(), folder.getOwner(), path) {
1262                                     @Override
1263                                     public void onSuccess(Resource _result) {
1264                                         scheduleFolderHeadCommand(folder, callback);
1265                                     }
1266
1267                                     @Override
1268                                     public void onError(Throwable _t) {
1269                                         GWT.log("", _t);
1270                                                                 setError(_t);
1271                                         if(_t instanceof RestException){
1272                                             displayError("Unable to create folder: " + ((RestException) _t).getHttpStatusText());
1273                                         }
1274                                         else
1275                                             displayError("System error creating folder: " + _t.getMessage());
1276                                     }
1277
1278                                                 @Override
1279                                                 protected void onUnauthorized(Response response) {
1280                                                         sessionExpired();
1281                                                 }
1282                                 };
1283                                 newFolder.setHeader("X-Auth-Token", getToken());
1284                                 newFolder.setHeader("Content-Type", "application/folder");
1285                                 newFolder.setHeader("Accept", "*/*");
1286                                 newFolder.setHeader("Content-Length", "0");
1287                                 Scheduler.get().scheduleDeferred(newFolder);
1288                                         }
1289                                         else
1290                                                 displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
1291                                 }
1292                                 else
1293                                     displayError("System error heading folder: " + t.getMessage());
1294
1295                                 GWT.log("Error heading folder", t);
1296                                         setError(t);
1297                                 }
1298
1299                                 @Override
1300                                 protected void onUnauthorized(Response response) {
1301                                         sessionExpired();
1302                                 }
1303                         };
1304                         headFolder.setHeader("X-Auth-Token", getToken());
1305                         Scheduler.get().scheduleDeferred(headFolder);
1306                 }
1307         }
1308
1309         public void scheduleFileHeadCommand(File f, final Command callback) {
1310                 HeadRequest<File> headFile = new HeadRequest<File>(File.class, getApiPath(), f.getOwner(), f.getUri(), f) {
1311
1312                         @Override
1313                         public void onSuccess(File _result) {
1314                                 if (callback != null)
1315                                         callback.execute();
1316                         }
1317
1318                         @Override
1319                         public void onError(Throwable t) {
1320                         GWT.log("Error heading file", t);
1321                                 setError(t);
1322                         if (t instanceof RestException)
1323                             displayError("Error heading file: " + ((RestException) t).getHttpStatusText());
1324                         else
1325                             displayError("System error heading file: " + t.getMessage());
1326                         }
1327
1328                         @Override
1329                         protected void onUnauthorized(Response response) {
1330                                 sessionExpired();
1331                         }
1332                 };
1333                 headFile.setHeader("X-Auth-Token", getToken());
1334                 Scheduler.get().scheduleDeferred(headFile);
1335         }
1336
1337         public boolean isMySharedSelected() {
1338                 return getSelectedTree().equals(getMySharedTreeView());
1339         }
1340
1341         private Folder getUploadFolder() {
1342                 if (folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1343                         return getSelection();
1344                 }
1345                 return null;
1346         }
1347
1348         private void updateUploadFolder() {
1349                 updateUploadFolder(null);
1350         }
1351
1352         private void updateUploadFolder(final JsArrayString urls) {
1353                 if (folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1354                         Folder f = getSelection();
1355                         if (getSelectedTree().equals(getFolderTreeView()))
1356                                 updateFolder(f, true, new Command() {
1357
1358                                         @Override
1359                                         public void execute() {
1360                                                 updateStatistics();
1361                                                 if (urls != null)
1362                                                         selectUploadedFiles(urls);
1363                                         }
1364                                 }, false);
1365                         else
1366                                 updateOtherSharedFolder(f, true, null);
1367                 }
1368         }
1369
1370         public native void disableUploadArea() /*-{
1371                 var uploader = $wnd.$("#uploader").pluploadQueue();
1372                 var dropElm = $wnd.document.getElementById('rightPanel');
1373                 $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1374         }-*/;
1375
1376         public native void enableUploadArea() /*-{
1377                 var uploader = $wnd.$("#uploader").pluploadQueue();
1378                 var dropElm = $wnd.document.getElementById('rightPanel');
1379                 $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1380                 if (uploader.runtime == 'html5') {
1381                         uploader.settings.drop_element = 'rightPanel';
1382                         uploader.trigger('PostInit');
1383                 }
1384         }-*/;
1385
1386         public void showUploadAlert(int numOfFiles) {
1387                 uploadAlert = new UploadAlert(this, numOfFiles);
1388                 uploadAlert.setPopupPositionAndShow(new PopupPanel.PositionCallback() {
1389
1390                         @Override
1391                         public void setPosition(int offsetWidth, int offsetHeight) {
1392                                 uploadAlert.setPopupPosition((Window.getClientWidth() - offsetWidth)/2, Window.getClientHeight() - offsetHeight);
1393                         }
1394                 });
1395         }
1396
1397         public void hideUploadAlert() {
1398                 uploadAlert.hide();
1399         }
1400
1401         public void selectUploadedFiles(JsArrayString urls) {
1402                 List<String> selectedUrls = new ArrayList<String>();
1403                 for (int i=0; i<urls.length(); i++)
1404                         selectedUrls.add(urls.get(i));
1405                 fileList.selectByUrl(selectedUrls);
1406         }
1407 }