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         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                 onWindowResized(Window.getClientHeight());
 748         }
 749
 750         /**
 751          * Display a warning message.
 752          *
 753          * @param msg the message to display
 754          */
 755         public void displayWarning(String msg) {
 756                 messagePanel.displayWarning(msg);
 757                 onWindowResized(Window.getClientHeight());
 758         }
 759
 760         /**
 761          * Display an informational message.
 762          *
 763          * @param msg the message to display
 764          */
 765         public void displayInformation(String msg) {
 766                 messagePanel.displayInformation(msg);
 767                 onWindowResized(Window.getClientHeight());
 768         }
 769
 770         /**
 771          * Retrieve the fileList.
 772          *
 773          * @return the fileList
 774          */
 775         public FileList getFileList() {
 776                 return fileList;
 777         }
 778
 779         /**
 780          * Retrieve the topPanel.
 781          *
 782          * @return the topPanel
 783          */
 784         TopPanel getTopPanel() {
 785                 return topPanel;
 786         }
 787
 788         /**
 789          * Retrieve the clipboard.
 790          *
 791          * @return the clipboard
 792          */
 793         public Clipboard getClipboard() {
 794                 return clipboard;
 795         }
 796
 797         public StatusPanel getStatusPanel() {
 798                 return statusPanel;
 799         }
 800
 801         public String getToken() {
 802                 return token;
 803         }
 804
 805         public static native void preventIESelection() /*-{
 806                 $doc.body.onselectstart = function () { return false; };
 807         }-*/;
 808
 809         public static native void enableIESelection() /*-{
 810                 if ($doc.body.onselectstart != null)
 811                 $doc.body.onselectstart = null;
 812         }-*/;
 813
 814         /**
 815          * @return the absolute path of the API root URL
 816          */
 817         public String getApiPath() {
 818                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 819                 return conf.apiPath();
 820         }
 821
 822         /**
 823          * History support for folder navigation
 824          * adds a new browser history entry
 825          *
 826          * @param key
 827          */
 828         public void updateHistory(String key){
 829 //              Replace any whitespace of the initial string to "+"
 830 //              String result = key.replaceAll("\\s","+");
 831 //              Add a new browser history entry.
 832 //              History.newItem(result);
 833                 History.newItem(key);
 834         }
 835
 836     public void deleteFolder(final Folder folder, final Command callback) {
 837         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(folder.getPrefix()) + "&t=" + System.currentTimeMillis();
 838         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 839         builder.setHeader("X-Auth-Token", getToken());
 840         try {
 841             builder.sendRequest("", new RequestCallback() {
 842                 @Override
 843                 public void onResponseReceived(Request request, Response response) {
 844                     if (response.getStatusCode() == Response.SC_OK) {
 845                         JSONValue json = JSONParser.parseStrict(response.getText());
 846                         JSONArray array = json.isArray();
 847                         int i = 0;
 848                         if (array != null) {
 849                             deleteObject(folder, i, array, callback);
 850                         }
 851                     }
 852                 }
 853
 854                 @Override
 855                 public void onError(Request request, Throwable exception) {
 856                         setError(exception);
 857                     displayError("System error unable to delete folder: " + exception.getMessage());
 858                 }
 859             });
 860         }
 861         catch (RequestException e) {
 862         }
 863     }
 864
 865     void deleteObject(final Folder folder, final int i, final JSONArray array, final Command callback) {
 866         if (i < array.size()) {
 867             JSONObject o = array.get(i).isObject();
 868             if (o != null && !o.containsKey("subdir")) {
 869                 JSONString name = o.get("name").isString();
 870                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 871                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), URL.encode(path)) {
 872                     @Override
 873                     public void onSuccess(Resource result) {
 874                         deleteObject(folder, i + 1, array, callback);
 875                     }
 876
 877                     @Override
 878                     public void onError(Throwable t) {
 879                         GWT.log("", t);
 880                                                 setError(t);
 881                         displayError("System error unable to delete folder: " + t.getMessage());
 882                     }
 883
 884                                 @Override
 885                                 protected void onUnauthorized(Response response) {
 886                                         sessionExpired();
 887                                 }
 888                 };
 889                 delete.setHeader("X-Auth-Token", getToken());
 890                 Scheduler.get().scheduleDeferred(delete);
 891             }
 892             else if (o != null) {
 893                 String subdir = o.get("subdir").isString().stringValue();
 894                 subdir = subdir.substring(0, subdir.length() - 1);
 895                 String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(subdir) + "&t=" + System.currentTimeMillis();
 896                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 897                 builder.setHeader("X-Auth-Token", getToken());
 898                 try {
 899                     builder.sendRequest("", new RequestCallback() {
 900                         @Override
 901                         public void onResponseReceived(Request request, Response response) {
 902                             if (response.getStatusCode() == Response.SC_OK) {
 903                                 JSONValue json = JSONParser.parseStrict(response.getText());
 904                                 JSONArray array2 = json.isArray();
 905                                 if (array2 != null) {
 906                                     int l = array.size();
 907                                     for (int j=0; j<array2.size(); j++) {
 908                                         array.set(l++, array2.get(j));
 909                                     }
 910                                 }
 911                                 deleteObject(folder, i + 1, array, callback);
 912                             }
 913                         }
 914
 915                         @Override
 916                         public void onError(Request request, Throwable exception) {
 917                                 setError(exception);
 918                             displayError("System error unable to delete folder: " + exception.getMessage());
 919                         }
 920                     });
 921                 }
 922                 catch (RequestException e) {
 923                 }
 924             }
 925         }
 926         else {
 927                 if (folder.isContainer()) {
 928                         updateFolder(folder, true, new Command() {
 929
 930                                         @Override
 931                                         public void execute() {
 932                                                 updateStatistics();
 933                                                 if (callback != null)
 934                                                         callback.execute();
 935                                         }
 936                                 }, false);
 937                         return;
 938                 }
 939             String path = folder.getUri();
 940             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), URL.encode(path)) {
 941                 @Override
 942                 public void onSuccess(Resource result) {
 943                     updateFolder(folder.getParent(), true, new Command() {
 944
 945                                                 @Override
 946                                                 public void execute() {
 947                                                         folderTreeSelectionModel.setSelected(folder.getParent(), true);
 948                                                         updateStatistics();
 949                                                         if (callback != null)
 950                                                                 callback.execute();
 951                                                 }
 952                                         }, true);
 953                 }
 954
 955                 @Override
 956                 public void onError(Throwable t) {
 957                     GWT.log("", t);
 958                                         setError(t);
 959                     if (t instanceof RestException) {
 960                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 961                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 962                         else
 963                                 onSuccess(null);
 964                     }
 965                     else
 966                         displayError("System error unable to delete folder: " + t.getMessage());
 967                 }
 968
 969                                 @Override
 970                                 protected void onUnauthorized(Response response) {
 971                                         sessionExpired();
 972                                 }
 973             };
 974             deleteFolder.setHeader("X-Auth-Token", getToken());
 975             Scheduler.get().scheduleDeferred(deleteFolder);
 976         }
 977     }
 978
 979     public FolderTreeView getFolderTreeView() {
 980         return folderTreeView;
 981     }
 982
 983     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 984         if (iter.hasNext()) {
 985             File file = iter.next();
 986             String path = targetUri + "/" + file.getName();
 987             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 988                 @Override
 989                 public void onSuccess(Resource result) {
 990                     copyFiles(iter, targetUsername, targetUri, callback);
 991                 }
 992
 993                 @Override
 994                 public void onError(Throwable t) {
 995                     GWT.log("", t);
 996                                         setError(t);
 997                     if (t instanceof RestException) {
 998                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 999                     }
1000                     else
1001                         displayError("System error unable to copy file: "+t.getMessage());
1002                 }
1003
1004                                 @Override
1005                                 protected void onUnauthorized(Response response) {
1006                                         sessionExpired();
1007                                 }
1008             };
1009             copyFile.setHeader("X-Auth-Token", getToken());
1010             copyFile.setHeader("X-Copy-From", URL.encodePathSegment(file.getUri()));
1011             if (!file.getOwner().equals(targetUsername))
1012                 copyFile.setHeader("X-Source-Account", URL.encodePathSegment(file.getOwner()));
1013             copyFile.setHeader("Content-Type", file.getContentType());
1014             Scheduler.get().scheduleDeferred(copyFile);
1015         }
1016         else  if (callback != null) {
1017             callback.execute();
1018         }
1019     }
1020
1021     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
1022         if (iter.hasNext()) {
1023             final Folder f = iter.next();
1024             copyFolder(f, targetUsername, targetUri, new Command() {
1025
1026                                 @Override
1027                                 public void execute() {
1028                                         copySubfolders(iter, targetUsername, targetUri, callback);
1029                                 }
1030                         });
1031         }
1032         else  if (callback != null) {
1033             callback.execute();
1034         }
1035     }
1036
1037     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
1038         String path = targetUri + "/" + f.getName();
1039         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
1040             @Override
1041             public void onSuccess(Resource result) {
1042                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix()), f) {
1043
1044                                         @Override
1045                                         public void onSuccess(final Folder _f) {
1046                                 Iterator<File> iter = _f.getFiles().iterator();
1047                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
1048                                     @Override
1049                                     public void execute() {
1050                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
1051                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
1052                                     }
1053                                 });
1054                                         }
1055
1056                                         @Override
1057                                         public void onError(Throwable t) {
1058                                 GWT.log("", t);
1059                                                 setError(t);
1060                                 if (t instanceof RestException) {
1061                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
1062                                 }
1063                                 else
1064                                     displayError("System error getting folder: " + t.getMessage());
1065                                         }
1066
1067                                         @Override
1068                                         protected void onUnauthorized(Response response) {
1069                                                 sessionExpired();
1070                                         }
1071                                 };
1072                                 getFolder.setHeader("X-Auth-Token", getToken());
1073                                 Scheduler.get().scheduleDeferred(getFolder);
1074             }
1075
1076             @Override
1077             public void onError(Throwable t) {
1078                 GWT.log("", t);
1079                                 setError(t);
1080                if (t instanceof RestException) {
1081                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
1082                 }
1083                 else
1084                     displayError("System error creating folder: " + t.getMessage());
1085             }
1086
1087                         @Override
1088                         protected void onUnauthorized(Response response) {
1089                                 sessionExpired();
1090                         }
1091         };
1092         createFolder.setHeader("X-Auth-Token", getToken());
1093         createFolder.setHeader("Accept", "*/*");
1094         createFolder.setHeader("Content-Length", "0");
1095         createFolder.setHeader("Content-Type", "application/folder");
1096         Scheduler.get().scheduleDeferred(createFolder);
1097     }
1098
1099     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1100         selectionModels.add(model);
1101     }
1102
1103         public OtherSharedTreeView getOtherSharedTreeView() {
1104                 return otherSharedTreeView;
1105         }
1106
1107         public void updateTrash(boolean showFiles, Command callback) {
1108                 updateFolder(trash, showFiles, callback, true);
1109         }
1110
1111         public void updateGroupsNode() {
1112                 groupTreeView.updateGroupNode(null);
1113         }
1114
1115         public Group addGroup(String groupname) {
1116                 Group newGroup = new Group(groupname);
1117                 account.addGroup(newGroup);
1118                 groupTreeView.updateGroupNode(null);
1119                 return newGroup;
1120         }
1121
1122         public void removeGroup(Group group) {
1123                 account.removeGroup(group);
1124                 updateGroupsNode();
1125         }
1126
1127         public TreeView getSelectedTree() {
1128                 return selectedTree;
1129         }
1130
1131         public void setSelectedTree(TreeView selected) {
1132                 selectedTree = selected;
1133         }
1134
1135         public Folder getSelection() {
1136                 if (selectedTree != null)
1137                         return selectedTree.getSelection();
1138                 return null;
1139         }
1140
1141         public void showFolderStatistics(int folderFileCount) {
1142                 numOfFiles.setHTML(String.valueOf(folderFileCount));
1143         }
1144
1145         public GroupTreeView getGroupTreeView() {
1146                 return groupTreeView;
1147         }
1148
1149         public void sessionExpired() {
1150                 new SessionExpiredDialog(this).center();
1151         }
1152
1153         public void updateRootFolder(Command callback) {
1154                 updateFolder(account.getPithos(), false, callback, true);
1155         }
1156
1157         void createMySharedTree() {
1158                 mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1159                 mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1160                     @Override
1161                     public void onSelectionChange(SelectionChangeEvent event) {
1162                         if (mysharedTreeSelectionModel.getSelectedObject() != null) {
1163                             deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1164                             upload.setEnabled(false);
1165                             disableUploadArea();
1166                             updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1167                                         showRelevantToolbarButtons();
1168                         }
1169                                 else {
1170                                         if (getSelectedTree().equals(mysharedTreeView))
1171                                                 setSelectedTree(null);
1172                                         if (getSelectedTree() == null)
1173                                                 showRelevantToolbarButtons();
1174                                 }
1175                     }
1176                 });
1177                 selectionModels.add(mysharedTreeSelectionModel);
1178                 mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1179                 mysharedTreeViewModel.initialize(new Command() {
1180
1181                         @Override
1182                         public void execute() {
1183                             mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1184                                 trees.insert(mysharedTreeView, 2);
1185                                 treeViews.add(mysharedTreeView);
1186                                 createOtherSharedTree();
1187                         }
1188                 });
1189         }
1190
1191         void createOtherSharedTree() {
1192                 otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1193                 otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1194                     @Override
1195                     public void onSelectionChange(SelectionChangeEvent event) {
1196                         if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
1197                             deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1198                             applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1199                             updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true, null);
1200                                         showRelevantToolbarButtons();
1201                         }
1202                                 else {
1203                                         if (getSelectedTree().equals(otherSharedTreeView))
1204                                                 setSelectedTree(null);
1205                                         if (getSelectedTree() == null)
1206                                                 showRelevantToolbarButtons();
1207                                 }
1208                     }
1209                 });
1210                 selectionModels.add(otherSharedTreeSelectionModel);
1211                 otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1212                 otherSharedTreeViewModel.initialize(new Command() {
1213
1214                         @Override
1215                         public void execute() {
1216                             otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1217                                 trees.insert(otherSharedTreeView, 1);
1218                                 treeViews.add(otherSharedTreeView);
1219                         }
1220                 });
1221         }
1222
1223         public native void log1(String message)/*-{
1224                 $wnd.console.log(message);
1225         }-*/;
1226
1227         public String getErrorData() {
1228                 if (error != null)
1229                         return error.toString();
1230                 return "";
1231         }
1232
1233         public void setError(Throwable t) {
1234                 error = t;
1235         }
1236
1237         public void showRelevantToolbarButtons() {
1238                 toolbar.showRelevantButtons();
1239         }
1240
1241         public FileUploadDialog getFileUploadDialog() {
1242                 if (fileUploadDialog == null)
1243                         fileUploadDialog = new FileUploadDialog(this);
1244                 return fileUploadDialog;
1245         }
1246
1247         public void hideUploadIndicator() {
1248                 upload.removeStyleName("pithos-uploadButton-loading");
1249                 upload.setTitle("");
1250         }
1251
1252         public void showUploadIndicator() {
1253                 upload.addStyleName("pithos-uploadButton-loading");
1254                 upload.setTitle("Upload in progress. Click for details.");
1255         }
1256
1257         public void scheduleFolderHeadCommand(final Folder folder, final Command callback) {
1258                 if (folder == null) {
1259                         if (callback != null)
1260                                 callback.execute();
1261                 }
1262                 else {
1263                         HeadRequest<Folder> headFolder = new HeadRequest<Folder>(Folder.class, getApiPath(), folder.getOwner(), folder.getUri(), folder) {
1264
1265                                 @Override
1266                                 public void onSuccess(Folder _result) {
1267                                         if (callback != null)
1268                                                 callback.execute();
1269                                 }
1270
1271                                 @Override
1272                                 public void onError(Throwable t) {
1273                                 if (t instanceof RestException) {
1274                                         if (((RestException) t).getHttpStatusCode() == Response.SC_NOT_FOUND) {
1275                                 final String path = folder.getUri();
1276                                 PutRequest newFolder = new PutRequest(getApiPath(), folder.getOwner(), path) {
1277                                     @Override
1278                                     public void onSuccess(Resource _result) {
1279                                         scheduleFolderHeadCommand(folder, callback);
1280                                     }
1281
1282                                     @Override
1283                                     public void onError(Throwable _t) {
1284                                         GWT.log("", _t);
1285                                                                 setError(_t);
1286                                         if(_t instanceof RestException){
1287                                             displayError("Unable to create folder: " + ((RestException) _t).getHttpStatusText());
1288                                         }
1289                                         else
1290                                             displayError("System error creating folder: " + _t.getMessage());
1291                                     }
1292
1293                                                 @Override
1294                                                 protected void onUnauthorized(Response response) {
1295                                                         sessionExpired();
1296                                                 }
1297                                 };
1298                                 newFolder.setHeader("X-Auth-Token", getToken());
1299                                 newFolder.setHeader("Content-Type", "application/folder");
1300                                 newFolder.setHeader("Accept", "*/*");
1301                                 newFolder.setHeader("Content-Length", "0");
1302                                 Scheduler.get().scheduleDeferred(newFolder);
1303                                         }
1304                                         else
1305                                                 displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
1306                                 }
1307                                 else
1308                                     displayError("System error heading folder: " + t.getMessage());
1309
1310                                 GWT.log("Error heading folder", t);
1311                                         setError(t);
1312                                 }
1313
1314                                 @Override
1315                                 protected void onUnauthorized(Response response) {
1316                                         sessionExpired();
1317                                 }
1318                         };
1319                         headFolder.setHeader("X-Auth-Token", getToken());
1320                         Scheduler.get().scheduleDeferred(headFolder);
1321                 }
1322         }
1323
1324         public void scheduleFileHeadCommand(File f, final Command callback) {
1325                 HeadRequest<File> headFile = new HeadRequest<File>(File.class, getApiPath(), f.getOwner(), f.getUri(), f) {
1326
1327                         @Override
1328                         public void onSuccess(File _result) {
1329                                 if (callback != null)
1330                                         callback.execute();
1331                         }
1332
1333                         @Override
1334                         public void onError(Throwable t) {
1335                         GWT.log("Error heading file", t);
1336                                 setError(t);
1337                         if (t instanceof RestException)
1338                             displayError("Error heading file: " + ((RestException) t).getHttpStatusText());
1339                         else
1340                             displayError("System error heading file: " + t.getMessage());
1341                         }
1342
1343                         @Override
1344                         protected void onUnauthorized(Response response) {
1345                                 sessionExpired();
1346                         }
1347                 };
1348                 headFile.setHeader("X-Auth-Token", getToken());
1349                 Scheduler.get().scheduleDeferred(headFile);
1350         }
1351
1352         public boolean isMySharedSelected() {
1353                 return getSelectedTree().equals(getMySharedTreeView());
1354         }
1355
1356         private Folder getUploadFolder() {
1357                 if (folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1358                         return getSelection();
1359                 }
1360                 return null;
1361         }
1362
1363         private void updateUploadFolder() {
1364                 updateUploadFolder(null);
1365         }
1366
1367         private void updateUploadFolder(final JsArrayString urls) {
1368                 if (folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1369                         Folder f = getSelection();
1370                         if (getSelectedTree().equals(getFolderTreeView()))
1371                                 updateFolder(f, true, new Command() {
1372
1373                                         @Override
1374                                         public void execute() {
1375                                                 updateStatistics();
1376                                                 if (urls != null)
1377                                                         selectUploadedFiles(urls);
1378                                         }
1379                                 }, false);
1380                         else
1381                                 updateOtherSharedFolder(f, true, null);
1382                 }
1383         }
1384
1385         public native void disableUploadArea() /*-{
1386                 var uploader = $wnd.$("#uploader").pluploadQueue();
1387                 var dropElm = $wnd.document.getElementById('rightPanel');
1388                 $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1389         }-*/;
1390
1391         public native void enableUploadArea() /*-{
1392                 var uploader = $wnd.$("#uploader").pluploadQueue();
1393                 var dropElm = $wnd.document.getElementById('rightPanel');
1394                 $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1395                 if (uploader.runtime == 'html5') {
1396                         uploader.settings.drop_element = 'rightPanel';
1397                         uploader.trigger('PostInit');
1398                 }
1399         }-*/;
1400
1401         public void showUploadAlert(int nOfFiles) {
1402                 if (uploadAlert == null)
1403                         uploadAlert = new UploadAlert(this, nOfFiles);
1404                 if (!uploadAlert.isShowing())
1405                         uploadAlert.setPopupPositionAndShow(new PopupPanel.PositionCallback() {
1406
1407                                 @Override
1408                                 public void setPosition(int offsetWidth, int offsetHeight) {
1409                                         uploadAlert.setPopupPosition((Window.getClientWidth() - offsetWidth)/2, statusPanel.getAbsoluteTop() - offsetHeight);
1410                                 }
1411                         });
1412                 uploadAlert.setNumOfFiles(nOfFiles);
1413         }
1414
1415         public void hideUploadAlert() {
1416                 if (uploadAlert != null && uploadAlert.isShowing())
1417                         uploadAlert.hide();
1418         }
1419
1420         public void selectUploadedFiles(JsArrayString urls) {
1421                 List<String> selectedUrls = new ArrayList<String>();
1422                 for (int i=0; i<urls.length(); i++)
1423                         selectedUrls.add(urls.get(i));
1424                 fileList.selectByUrl(selectedUrls);
1425         }
1426
1427         public void deleteAndCreateTrash() {
1428                 DeleteRequest delete = new DeleteRequest(getApiPath(), getUsername(), "/trash") {
1429
1430                         @Override
1431                         protected void onUnauthorized(Response response) {
1432                                 if (retries >= MAX_RETRIES)
1433                                         sessionExpired();
1434                 else //retry
1435                         Scheduler.get().scheduleDeferred(this);
1436                         }
1437
1438                         @Override
1439                         public void onSuccess(Resource result) {
1440                                 createTrashContainer(null);
1441                         }
1442
1443                         @Override
1444                         public void onError(Throwable t) {
1445                 if (retries >= MAX_RETRIES) {
1446                         GWT.log("Error deleting trash", t);
1447                                         setError(t);
1448                         if (t instanceof RestException)
1449                             displayError("Error deleting trash: " + ((RestException) t).getHttpStatusText());
1450                         else
1451                             displayError("System error deleting trash: " + t.getMessage());
1452                 }
1453                 else {//retry
1454                         GWT.log("Retry " + retries);
1455                         Scheduler.get().scheduleDeferred(this);
1456                 }
1457                         }
1458                 };
1459                 delete.setHeader("X-Auth-Token", getToken());
1460                 Scheduler.get().scheduleDeferred(delete);
1461         }
1462 }