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

   1 /*
   2  * Copyright 2011-2012 GRNET S.A. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or
   5  * without modification, are permitted provided that the following
   6  * conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above
   9  *      copyright notice, this list of conditions and the following
  10  *      disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials
  15  *      provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and
  31  * documentation are those of the authors and should not be
  32  * interpreted as representing official policies, either expressed
  33  * or implied, of GRNET S.A.
  34  */
  35 package gr.grnet.pithos.web.client;
  36
  37 import com.google.gwt.core.client.EntryPoint;
  38 import com.google.gwt.core.client.GWT;
  39 import com.google.gwt.core.client.JsArrayString;
  40 import com.google.gwt.core.client.Scheduler;
  41 import com.google.gwt.core.client.Scheduler.RepeatingCommand;
  42 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  43 import com.google.gwt.event.dom.client.ClickEvent;
  44 import com.google.gwt.event.dom.client.ClickHandler;
  45 import com.google.gwt.event.logical.shared.ResizeEvent;
  46 import com.google.gwt.event.logical.shared.ResizeHandler;
  47 import com.google.gwt.http.client.Response;
  48 import com.google.gwt.http.client.URL;
  49 import com.google.gwt.i18n.client.DateTimeFormat;
  50 import com.google.gwt.i18n.client.Dictionary;
  51 import com.google.gwt.i18n.client.TimeZone;
  52 import com.google.gwt.resources.client.ClientBundle;
  53 import com.google.gwt.resources.client.CssResource;
  54 import com.google.gwt.resources.client.ImageResource;
  55 import com.google.gwt.resources.client.ImageResource.ImageOptions;
  56 import com.google.gwt.user.client.*;
  57 import com.google.gwt.user.client.ui.*;
  58 import com.google.gwt.view.client.SelectionChangeEvent;
  59 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
  60 import com.google.gwt.view.client.SingleSelectionModel;
  61 import gr.grnet.pithos.web.client.catalog.UpdateUserCatalogs;
  62 import gr.grnet.pithos.web.client.catalog.UserCatalogs;
  63 import gr.grnet.pithos.web.client.commands.UploadFileCommand;
  64 import gr.grnet.pithos.web.client.foldertree.*;
  65 import gr.grnet.pithos.web.client.grouptree.Group;
  66 import gr.grnet.pithos.web.client.grouptree.GroupTreeView;
  67 import gr.grnet.pithos.web.client.grouptree.GroupTreeViewModel;
  68 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView;
  69 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeViewModel;
  70 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView;
  71 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeViewModel;
  72 import gr.grnet.pithos.web.client.rest.*;
  73 import org.apache.http.HttpStatus;
  74
  75 import java.util.*;
  76
  77 /**
  78  * Entry point classes define <code>onModuleLoad()</code>.
  79  */
  80 public class Pithos implements EntryPoint, ResizeHandler {
  81
  82     public static final Configuration config = GWT.create(Configuration.class);
  83
  84     public interface Style extends CssResource {
  85         String commandAnchor();
  86
  87         String statistics();
  88
  89         @ClassName("gwt-HTML")
  90         String html();
  91
  92         String uploadAlert();
  93
  94         String uploadAlertLink();
  95
  96         String uploadAlertProgress();
  97
  98         String uploadAlertPercent();
  99
 100         String uploadAlertClose();
 101     }
 102
 103     public interface Resources extends ClientBundle {
 104         @Source("Pithos.css")
 105         Style pithosCss();
 106
 107         @Source("gr/grnet/pithos/resources/close-popup.png")
 108         ImageResource closePopup();
 109     }
 110
 111     public static Resources resources = GWT.create(Resources.class);
 112
 113     /**
 114      * Instantiate an application-level image bundle. This object will provide
 115      * programmatic access to all the images needed by widgets.
 116      */
 117     static Images images = (Images) GWT.create(Images.class);
 118
 119     public String getUserID() {
 120         return userID;
 121     }
 122
 123     public UserCatalogs getUserCatalogs() {
 124         return userCatalogs;
 125     }
 126
 127     public String getCurrentUserDisplayNameOrID() {
 128         final String displayName = userCatalogs.getUserDisplayName(getUserID());
 129         return displayName == null ? getUserID() : displayName;
 130     }
 131
 132     public boolean hasUserDisplayNameForID(String userID) {
 133         return userCatalogs.getUserDisplayName(userID) != null;
 134     }
 135
 136     public boolean hasUserIDForDisplayName(String displayName) {
 137         return userCatalogs.getUserID(displayName) != null;
 138     }
 139
 140     public String getUserDisplayNameForID(String userID) {
 141         return userCatalogs.getUserDisplayName(userID);
 142     }
 143
 144     public String getUserIDForDisplayName(String displayName) {
 145         return userCatalogs.getUserID(displayName);
 146     }
 147
 148     public List<String> getUserDisplayNamesForIDs(List<String> userIDs) {
 149         if(userIDs == null) {
 150             userIDs = new ArrayList<String>();
 151         }
 152         final List<String> userDisplayNames = new ArrayList<String>();
 153         for(String userID : userIDs) {
 154             final String displayName = getUserDisplayNameForID(userID);
 155             userDisplayNames.add(displayName);
 156         }
 157
 158         return userDisplayNames;
 159     }
 160
 161     public List<String> filterUserIDsWithUnknownDisplayName(Collection<String> userIDs) {
 162         if(userIDs == null) {
 163             userIDs = new ArrayList<String>();
 164         }
 165         final List<String> filtered = new ArrayList<String>();
 166         for(String userID : userIDs) {
 167             if(!this.userCatalogs.hasUserID(userID)) {
 168                 filtered.add(userID);
 169             }
 170         }
 171         return filtered;
 172     }
 173
 174     public void setAccount(AccountResource acct) {
 175         account = acct;
 176     }
 177
 178     public AccountResource getAccount() {
 179         return account;
 180     }
 181
 182     public void updateFolder(Folder f, boolean showfiles, Command callback, final boolean openParent) {
 183         folderTreeView.updateFolder(f, showfiles, callback, openParent);
 184     }
 185
 186     public void updateGroupNode(Group group) {
 187         groupTreeView.updateGroupNode(group);
 188     }
 189
 190     public void updateMySharedRoot() {
 191         mysharedTreeView.updateRoot();
 192     }
 193
 194     public void updateSharedFolder(Folder f, boolean showfiles, Command callback) {
 195         mysharedTreeView.updateFolder(f, showfiles, callback);
 196     }
 197
 198     public void updateSharedFolder(Folder f, boolean showfiles) {
 199         updateSharedFolder(f, showfiles, null);
 200     }
 201
 202     public void updateOtherSharedFolder(Folder f, boolean showfiles, Command callback) {
 203         otherSharedTreeView.updateFolder(f, showfiles, callback);
 204     }
 205
 206     public MysharedTreeView getMySharedTreeView() {
 207         return mysharedTreeView;
 208     }
 209
 210     /**
 211      * An aggregate image bundle that pulls together all the images for this
 212      * application into a single bundle.
 213      */
 214     public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 215
 216         @Source("gr/grnet/pithos/resources/document.png")
 217         ImageResource folders();
 218
 219         @Source("gr/grnet/pithos/resources/advancedsettings.png")
 220         @ImageOptions(width = 32, height = 32)
 221         ImageResource tools();
 222     }
 223
 224     private Throwable error;
 225
 226     /**
 227      * The Application Clipboard implementation;
 228      */
 229     private Clipboard clipboard = new Clipboard();
 230
 231     /**
 232      * The top panel that contains the menu bar.
 233      */
 234     private TopPanel topPanel;
 235
 236     /**
 237      * The panel that contains the various system messages.
 238      */
 239     private MessagePanel messagePanel = new MessagePanel(this, Pithos.images);
 240
 241     /**
 242      * The bottom panel that contains the status bar.
 243      */
 244     StatusPanel statusPanel = null;
 245
 246     /**
 247      * The file list widget.
 248      */
 249     private FileList fileList;
 250
 251     /**
 252      * The tab panel that occupies the right side of the screen.
 253      */
 254     private VerticalPanel inner = new VerticalPanel();
 255
 256
 257     /**
 258      * The split panel that will contain the left and right panels.
 259      */
 260     private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 261
 262     /**
 263      * The currently selected item in the application, for use by the Edit menu
 264      * commands. Potential types are Folder, File, User and Group.
 265      */
 266     private Object currentSelection;
 267
 268     public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 269
 270     /**
 271      * The ID that uniquely identifies the user in Pithos+.
 272      * Currently this is a UUID. It used to be the user's email.
 273      */
 274     private String userID = null;
 275
 276     /**
 277      * Hold mappings from user UUIDs to emails and vice-versa.
 278      */
 279     private UserCatalogs userCatalogs = new UserCatalogs();
 280
 281     /**
 282      * The authentication token of the current user.
 283      */
 284     private String userToken;
 285
 286     VerticalPanel trees;
 287
 288     SingleSelectionModel<Folder> folderTreeSelectionModel;
 289     FolderTreeViewModel folderTreeViewModel;
 290     FolderTreeView folderTreeView;
 291
 292     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 293     MysharedTreeViewModel mysharedTreeViewModel;
 294     MysharedTreeView mysharedTreeView = null;
 295
 296     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 297     OtherSharedTreeViewModel otherSharedTreeViewModel;
 298     OtherSharedTreeView otherSharedTreeView = null;
 299
 300     GroupTreeViewModel groupTreeViewModel;
 301     GroupTreeView groupTreeView;
 302
 303     TreeView selectedTree;
 304     protected AccountResource account;
 305
 306     Folder trash;
 307
 308     List<Composite> treeViews = new ArrayList<Composite>();
 309
 310     @SuppressWarnings("rawtypes")
 311     List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 312
 313     public Button upload;
 314
 315     private HTML numOfFiles;
 316
 317     private Toolbar toolbar;
 318
 319     private FileUploadDialog fileUploadDialog = new FileUploadDialog(this);
 320
 321     UploadAlert uploadAlert;
 322
 323     Date lastModified;
 324
 325     @Override
 326     public void onModuleLoad() {
 327         if(parseUserCredentials()) {
 328             initialize();
 329         }
 330     }
 331
 332     static native void __ConsoleLog(String message) /*-{
 333       try {
 334         console.log(message);
 335       } catch (e) {
 336       }
 337     }-*/;
 338
 339     public static void LOG(Object ...args) {
 340         final StringBuilder sb = new StringBuilder();
 341         for(Object arg : args) {
 342             sb.append(arg);
 343         }
 344         if(sb.length() > 0) {
 345             __ConsoleLog(sb.toString());
 346         }
 347     }
 348
 349     private void initialize() {
 350         lastModified = new Date(); //Initialize if-modified-since value with now.
 351         resources.pithosCss().ensureInjected();
 352         boolean bareContent = Window.Location.getParameter("noframe") != null;
 353         String contentWidth = bareContent ? Const.PERCENT_100 : "75%";
 354
 355         VerticalPanel outer = new VerticalPanel();
 356         outer.setWidth(Const.PERCENT_100);
 357         if(!bareContent) {
 358             outer.addStyleName("pithos-outer");
 359         }
 360
 361         if(!bareContent) {
 362             topPanel = new TopPanel(this, Pithos.images);
 363             topPanel.setWidth(Const.PERCENT_100);
 364             outer.add(topPanel);
 365             outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 366         }
 367
 368         messagePanel.setVisible(false);
 369         outer.add(messagePanel);
 370         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 371         outer.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
 372
 373         HorizontalPanel header = new HorizontalPanel();
 374         header.addStyleName("pithos-header");
 375         header.setWidth(contentWidth);
 376         if(bareContent) {
 377             header.addStyleName("pithos-header-noframe");
 378         }
 379         upload = new Button("Upload", new ClickHandler() {
 380             @Override
 381             public void onClick(ClickEvent event) {
 382                 if(getSelection() != null) {
 383                     new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 384                 }
 385             }
 386         });
 387         upload.addStyleName("pithos-uploadButton");
 388         header.add(upload);
 389         header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 390         header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 391
 392         toolbar = new Toolbar(this);
 393         header.add(toolbar);
 394         header.setCellHorizontalAlignment(toolbar, HasHorizontalAlignment.ALIGN_CENTER);
 395         header.setCellVerticalAlignment(toolbar, HasVerticalAlignment.ALIGN_MIDDLE);
 396
 397         HorizontalPanel folderStatistics = new HorizontalPanel();
 398         folderStatistics.addStyleName("pithos-folderStatistics");
 399         numOfFiles = new HTML();
 400         folderStatistics.add(numOfFiles);
 401         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 402         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 403         folderStatistics.add(numOfFilesLabel);
 404         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 405         header.add(folderStatistics);
 406         header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 407         header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
 408         header.setCellWidth(folderStatistics, "40px");
 409         outer.add(header);
 410         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 411         // Inner contains the various lists
 412         inner.sinkEvents(Event.ONCONTEXTMENU);
 413         inner.setWidth(Const.PERCENT_100);
 414
 415         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 416         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 417             @Override
 418             public void onSelectionChange(SelectionChangeEvent event) {
 419                 if(folderTreeSelectionModel.getSelectedObject() != null) {
 420                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 421                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 422                     Folder f = folderTreeSelectionModel.getSelectedObject();
 423                     updateFolder(f, true, new Command() {
 424
 425                         @Override
 426                         public void execute() {
 427                             updateStatistics();
 428                         }
 429                     }, true);
 430                     showRelevantToolbarButtons();
 431                 }
 432                 else {
 433                     if(getSelectedTree().equals(folderTreeView)) {
 434                         setSelectedTree(null);
 435                     }
 436                     if(getSelectedTree() == null) {
 437                         showRelevantToolbarButtons();
 438                     }
 439                 }
 440             }
 441         });
 442         selectionModels.add(folderTreeSelectionModel);
 443
 444         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 445         folderTreeView = new FolderTreeView(folderTreeViewModel);
 446         treeViews.add(folderTreeView);
 447
 448         fileList = new FileList(this, images);
 449         inner.add(fileList);
 450
 451         trees = new VerticalPanel();
 452         trees.setWidth(Const.PERCENT_100);
 453
 454         // Add the left and right panels to the split panel.
 455         splitPanel.setLeftWidget(trees);
 456         FlowPanel right = new FlowPanel();
 457         right.getElement().setId("rightPanel");
 458         right.add(inner);
 459         splitPanel.setRightWidget(right);
 460         splitPanel.setSplitPosition("219px");
 461         splitPanel.setSize(Const.PERCENT_100, Const.PERCENT_100);
 462         splitPanel.addStyleName("pithos-splitPanel");
 463         splitPanel.setWidth(contentWidth);
 464         outer.add(splitPanel);
 465         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 466
 467         if(!bareContent) {
 468             statusPanel = new StatusPanel();
 469             statusPanel.setWidth(Const.PERCENT_100);
 470             outer.add(statusPanel);
 471             outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 472         }
 473         else {
 474             splitPanel.addStyleName("pithos-splitPanel-noframe");
 475         }
 476
 477         // Hook the window resize event, so that we can adjust the UI.
 478         Window.addResizeHandler(this);
 479         // Clear out the window's built-in margin, because we want to take
 480         // advantage of the entire client area.
 481         Window.setMargin("0px");
 482         // Finally, add the outer panel to the RootPanel, so that it will be
 483         // displayed.
 484         RootPanel.get().add(outer);
 485         // Call the window resized handler to get the initial sizes setup. Doing
 486         // this in a deferred command causes it to occur after all widgets'
 487         // sizes have been computed by the browser.
 488         Scheduler.get().scheduleIncremental(new RepeatingCommand() {
 489
 490             @Override
 491             public boolean execute() {
 492                 if(!isCloudbarReady()) {
 493                     return true;
 494                 }
 495                 onWindowResized(Window.getClientHeight());
 496                 return false;
 497             }
 498         });
 499
 500         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 501             @Override
 502             public void execute() {
 503                 fetchAccount(new Command() {
 504
 505                     @Override
 506                     public void execute() {
 507                         if(!account.hasHomeContainer()) {
 508                             createHomeContainer(account, this);
 509                         }
 510                         else if(!account.hasTrashContainer()) {
 511                             createTrashContainer(this);
 512                         }
 513                         else {
 514                             for(Folder f : account.getContainers()) {
 515                                 if(f.getName().equals(Const.TRASH_CONTAINER)) {
 516                                     trash = f;
 517                                     break;
 518                                 }
 519                             }
 520                             trees.add(folderTreeView);
 521                             folderTreeViewModel.initialize(account, new Command() {
 522
 523                                 @Override
 524                                 public void execute() {
 525                                     createMySharedTree();
 526                                 }
 527                             });
 528
 529                             HorizontalPanel separator = new HorizontalPanel();
 530                             separator.addStyleName("pithos-statisticsSeparator");
 531                             separator.add(new HTML(""));
 532                             trees.add(separator);
 533
 534                             groupTreeViewModel = new GroupTreeViewModel(Pithos.this);
 535                             groupTreeView = new GroupTreeView(groupTreeViewModel);
 536                             treeViews.add(groupTreeView);
 537                             trees.add(groupTreeView);
 538                             folderTreeView.showStatistics(account);
 539                         }
 540                     }
 541                 });
 542             }
 543         });
 544     }
 545
 546     public void scheduleResfresh() {
 547         Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
 548
 549             @Override
 550             public boolean execute() {
 551                 final Folder f = getSelection();
 552                 if(f == null) {
 553                     return true;
 554                 }
 555
 556                 HeadRequest<Folder> head = new HeadRequest<Folder>(Pithos.this, Folder.class, getApiPath(), f.getOwnerID(), "/" + f.getContainer()) {
 557
 558                     @Override
 559                     public void onSuccess(Folder _result) {
 560                         lastModified = new Date();
 561                         if(getSelectedTree().equals(folderTreeView)) {
 562                             updateFolder(f, true, new Command() {
 563
 564                                 @Override
 565                                 public void execute() {
 566                                     scheduleResfresh();
 567                                 }
 568
 569                             }, false);
 570                         }
 571                         else if(getSelectedTree().equals(mysharedTreeView)) {
 572                             updateSharedFolder(f, true, new Command() {
 573
 574                                 @Override
 575                                 public void execute() {
 576                                     scheduleResfresh();
 577                                 }
 578                             });
 579                         }
 580                         else {
 581                             scheduleResfresh();
 582                         }
 583                     }
 584
 585                     @Override
 586                     public void onError(Throwable t) {
 587                         if(t instanceof RestException && ((RestException) t).getHttpStatusCode() == HttpStatus.SC_NOT_MODIFIED) {
 588                             scheduleResfresh();
 589                         }
 590                         else if(retries >= MAX_RETRIES) {
 591                             GWT.log("Error heading folder", t);
 592                             setError(t);
 593                             if(t instanceof RestException) {
 594                                 displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
 595                             }
 596                             else {
 597                                 displayError("System error heading folder: " + t.getMessage());
 598                             }
 599                         }
 600                         else {//retry
 601                             GWT.log("Retry " + retries);
 602                             Scheduler.get().scheduleDeferred(this);
 603                         }
 604                     }
 605
 606                     @Override
 607                     protected void onUnauthorized(Response response) {
 608                         if(retries >= MAX_RETRIES) {
 609                             sessionExpired();
 610                         }
 611                         else //retry
 612                         {
 613                             Scheduler.get().scheduleDeferred(this);
 614                         }
 615                     }
 616                 };
 617                 head.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 618                 head.setHeader(Const.IF_MODIFIED_SINCE, DateTimeFormat.getFormat(Const.DATE_FORMAT_1).format(lastModified, TimeZone.createTimeZone(0)) + " GMT");
 619                 Scheduler.get().scheduleDeferred(head);
 620
 621                 return false;
 622             }
 623         }, 3000);
 624     }
 625
 626     public void applyPermissions(Folder f) {
 627         if(f != null) {
 628             if(f.isInTrash()) {
 629                 upload.setEnabled(false);
 630                 disableUploadArea();
 631             }
 632             else {
 633                 Boolean[] perms = f.getPermissions().get(userID);
 634                 if(f.getOwnerID().equals(userID) || (perms != null && perms[1] != null && perms[1])) {
 635                     upload.setEnabled(true);
 636                     enableUploadArea();
 637                 }
 638                 else {
 639                     upload.setEnabled(false);
 640                     disableUploadArea();
 641                 }
 642             }
 643         }
 644         else {
 645             upload.setEnabled(false);
 646             disableUploadArea();
 647         }
 648     }
 649
 650     @SuppressWarnings({"rawtypes", "unchecked"})
 651     public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 652         selectedTree = _selectedTree;
 653
 654         for(SingleSelectionModel s : selectionModels) {
 655             if(!s.equals(model) && s.getSelectedObject() != null) {
 656                 s.setSelected(s.getSelectedObject(), false);
 657             }
 658         }
 659     }
 660
 661     public void showFiles(final Folder f) {
 662         Set<File> files = f.getFiles();
 663         showFiles(files);
 664     }
 665
 666     public void showFiles(Set<File> files) {
 667         fileList.setFiles(new ArrayList<File>(files));
 668     }
 669
 670     /**
 671      * Parse and store the user credentials to the appropriate fields.
 672      */
 673     private boolean parseUserCredentials() {
 674         Configuration conf = (Configuration) GWT.create(Configuration.class);
 675         Dictionary otherProperties = Dictionary.getDictionary(Const.OTHER_PROPERTIES);
 676         String cookie = otherProperties.get(Const.AUTH_COOKIE);
 677         String auth = Cookies.getCookie(cookie);
 678         if(auth == null) {
 679             authenticateUser();
 680             return false;
 681         }
 682         if(auth.startsWith("\"")) {
 683             auth = auth.substring(1);
 684         }
 685         if(auth.endsWith("\"")) {
 686             auth = auth.substring(0, auth.length() - 1);
 687         }
 688         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 689         if(authSplit.length != 2) {
 690             authenticateUser();
 691             return false;
 692         }
 693         userID = authSplit[0];
 694         userToken = authSplit[1];
 695
 696         String gotoUrl = Window.Location.getParameter("goto");
 697         if(gotoUrl != null && gotoUrl.length() > 0) {
 698             Window.Location.assign(gotoUrl);
 699             return false;
 700         }
 701         return true;
 702     }
 703
 704     /**
 705      * Redirect the user to the login page for authentication.
 706      */
 707     protected void authenticateUser() {
 708         Dictionary otherProperties = Dictionary.getDictionary(Const.OTHER_PROPERTIES);
 709         Window.Location.assign(otherProperties.get(Const.LOGIN_URL) + Window.Location.getHref());
 710     }
 711
 712     public void fetchAccount(final Command callback) {
 713         LOG("Pithos::fetchAccount(), callback = ", callback);
 714         String path = "?format=json";
 715
 716         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(this, AccountResource.class, getApiPath(), userID, path) {
 717             @Override
 718             public void onSuccess(AccountResource _result) {
 719                 account = _result;
 720                 if(callback != null) {
 721                     callback.execute();
 722                 }
 723                 // Initialize the user catalog
 724                 new UpdateUserCatalogs(Pithos.this, Pithos.this.getUserID()).scheduleDeferred();
 725             }
 726
 727             @Override
 728             public void onError(Throwable t) {
 729                 GWT.log("Error getting account", t);
 730                 setError(t);
 731                 if(t instanceof RestException) {
 732                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 733                 }
 734                 else {
 735                     displayError("System error fetching user data: " + t.getMessage());
 736                 }
 737             }
 738
 739             @Override
 740             protected void onUnauthorized(Response response) {
 741                 sessionExpired();
 742             }
 743         };
 744         getAccount.setHeader(Const.X_AUTH_TOKEN, userToken);
 745         Scheduler.get().scheduleDeferred(getAccount);
 746     }
 747
 748     public void updateStatistics() {
 749         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(this, AccountResource.class, getApiPath(), userID, "", account) {
 750
 751             @Override
 752             public void onSuccess(AccountResource _result) {
 753                 folderTreeView.showStatistics(account);
 754             }
 755
 756             @Override
 757             public void onError(Throwable t) {
 758                 GWT.log("Error getting account", t);
 759                 setError(t);
 760                 if(t instanceof RestException) {
 761                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 762                 }
 763                 else {
 764                     displayError("System error fetching user data: " + t.getMessage());
 765                 }
 766             }
 767
 768             @Override
 769             protected void onUnauthorized(Response response) {
 770                 sessionExpired();
 771             }
 772         };
 773         headAccount.setHeader(Const.X_AUTH_TOKEN, userToken);
 774         Scheduler.get().scheduleDeferred(headAccount);
 775     }
 776
 777     protected void createHomeContainer(final AccountResource _account, final Command callback) {
 778         String path = "/" + Const.HOME_CONTAINER;
 779         PutRequest createPithos = new PutRequest(this, getApiPath(), getUserID(), path) {
 780             @Override
 781             public void onSuccess(Resource result) {
 782                 if(!_account.hasTrashContainer()) {
 783                     createTrashContainer(callback);
 784                 }
 785                 else {
 786                     fetchAccount(callback);
 787                 }
 788             }
 789
 790             @Override
 791             public void onError(Throwable t) {
 792                 GWT.log("Error creating pithos", t);
 793                 setError(t);
 794                 if(t instanceof RestException) {
 795                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 796                 }
 797                 else {
 798                     displayError("System error Error creating pithos: " + t.getMessage());
 799                 }
 800             }
 801
 802             @Override
 803             protected void onUnauthorized(Response response) {
 804                 sessionExpired();
 805             }
 806         };
 807         createPithos.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 808         Scheduler.get().scheduleDeferred(createPithos);
 809     }
 810
 811     protected void createTrashContainer(final Command callback) {
 812         String path = "/" + Const.TRASH_CONTAINER;
 813         PutRequest createPithos = new PutRequest(this, getApiPath(), getUserID(), path) {
 814             @Override
 815             public void onSuccess(Resource result) {
 816                 fetchAccount(callback);
 817             }
 818
 819             @Override
 820             public void onError(Throwable t) {
 821                 GWT.log("Error creating pithos", t);
 822                 setError(t);
 823                 if(t instanceof RestException) {
 824                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 825                 }
 826                 else {
 827                     displayError("System error Error creating pithos: " + t.getMessage());
 828                 }
 829             }
 830
 831             @Override
 832             protected void onUnauthorized(Response response) {
 833                 sessionExpired();
 834             }
 835         };
 836         createPithos.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 837         Scheduler.get().scheduleDeferred(createPithos);
 838     }
 839
 840     /**
 841      * Creates an HTML fragment that places an image & caption together, for use
 842      * in a group header.
 843      *
 844      * @param imageProto an image prototype for an image
 845      * @param caption    the group caption
 846      * @return the header HTML fragment
 847      */
 848     private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 849         String captionHTML = "<table class='caption' cellpadding='0' "
 850             + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 851             + "</td><td id =" + caption + " class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 852             + caption + "</b></td></tr></table>";
 853         return captionHTML;
 854     }
 855
 856     protected void onWindowResized(int height) {
 857         // Adjust the split panel to take up the available room in the window.
 858         int newHeight = height - splitPanel.getAbsoluteTop() - 153;
 859         if(newHeight < 1) {
 860             newHeight = 1;
 861         }
 862         splitPanel.setHeight("" + newHeight);
 863         inner.setHeight("" + newHeight);
 864     }
 865
 866     native boolean isCloudbarReady()/*-{
 867       if ($wnd.$("div.cloudbar") && $wnd.$("div.cloudbar").height() > 0)
 868         return true;
 869       return false;
 870     }-*/;
 871
 872     @Override
 873     public void onResize(ResizeEvent event) {
 874         int height = event.getHeight();
 875         onWindowResized(height);
 876     }
 877
 878     /**
 879      * Display an error message.
 880      *
 881      * @param msg the message to display
 882      */
 883     public void displayError(String msg) {
 884         messagePanel.displayError(msg);
 885         onWindowResized(Window.getClientHeight());
 886     }
 887
 888     /**
 889      * Display a warning message.
 890      *
 891      * @param msg the message to display
 892      */
 893     public void displayWarning(String msg) {
 894         messagePanel.displayWarning(msg);
 895         onWindowResized(Window.getClientHeight());
 896     }
 897
 898     /**
 899      * Display an informational message.
 900      *
 901      * @param msg the message to display
 902      */
 903     public void displayInformation(String msg) {
 904         messagePanel.displayInformation(msg);
 905         onWindowResized(Window.getClientHeight());
 906     }
 907
 908     /**
 909      * Retrieve the fileList.
 910      *
 911      * @return the fileList
 912      */
 913     public FileList getFileList() {
 914         return fileList;
 915     }
 916
 917     /**
 918      * Retrieve the topPanel.
 919      *
 920      * @return the topPanel
 921      */
 922     TopPanel getTopPanel() {
 923         return topPanel;
 924     }
 925
 926     /**
 927      * Retrieve the clipboard.
 928      *
 929      * @return the clipboard
 930      */
 931     public Clipboard getClipboard() {
 932         return clipboard;
 933     }
 934
 935     public StatusPanel getStatusPanel() {
 936         return statusPanel;
 937     }
 938
 939     public String getUserToken() {
 940         return userToken;
 941     }
 942
 943     public static native void preventIESelection() /*-{
 944       $doc.body.onselectstart = function () {
 945         return false;
 946       };
 947     }-*/;
 948
 949     public static native void enableIESelection() /*-{
 950       if ($doc.body.onselectstart != null)
 951         $doc.body.onselectstart = null;
 952     }-*/;
 953
 954     /**
 955      * @return the absolute path of the API root URL
 956      */
 957     public String getApiPath() {
 958         Configuration conf = (Configuration) GWT.create(Configuration.class);
 959         return conf.apiPath();
 960     }
 961
 962     /**
 963      * History support for folder navigation
 964      * adds a new browser history entry
 965      *
 966      * @param key
 967      */
 968     public void updateHistory(String key) {
 969 //              Replace any whitespace of the initial string to "+"
 970 //              String result = key.replaceAll("\\s","+");
 971 //              Add a new browser history entry.
 972 //              History.newItem(result);
 973         History.newItem(key);
 974     }
 975
 976     public void deleteFolder(final Folder folder, final Command callback) {
 977         final PleaseWaitPopup pwp = new PleaseWaitPopup();
 978         pwp.center();
 979         String path = "/" + folder.getContainer() + "/" + folder.getPrefix() + "?delimiter=/" + "&t=" + System.currentTimeMillis();
 980         DeleteRequest deleteFolder = new DeleteRequest(this, getApiPath(), folder.getOwnerID(), path) {
 981
 982             @Override
 983             protected void onUnauthorized(Response response) {
 984                 pwp.hide();
 985                 sessionExpired();
 986             }
 987
 988             @Override
 989             public void onSuccess(Resource result) {
 990                 updateFolder(folder.getParent(), true, new Command() {
 991
 992                     @Override
 993                     public void execute() {
 994                         folderTreeSelectionModel.setSelected(folder.getParent(), true);
 995                         updateStatistics();
 996                         if(callback != null) {
 997                             callback.execute();
 998                         }
 999                         pwp.hide();
1000                     }
1001                 }, true);
1002             }
1003
1004             @Override
1005             public void onError(Throwable t) {
1006                 GWT.log("", t);
1007                 setError(t);
1008                 if(t instanceof RestException) {
1009                     if(((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND) {
1010                         displayError("Unable to delete folder: " + ((RestException) t).getHttpStatusText());
1011                     }
1012                     else {
1013                         onSuccess(null);
1014                     }
1015                 }
1016                 else {
1017                     displayError("System error unable to delete folder: " + t.getMessage());
1018                 }
1019                 pwp.hide();
1020             }
1021         };
1022         deleteFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1023         Scheduler.get().scheduleDeferred(deleteFolder);
1024     }
1025
1026     public FolderTreeView getFolderTreeView() {
1027         return folderTreeView;
1028     }
1029
1030     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
1031         if(iter.hasNext()) {
1032             File file = iter.next();
1033             String path = targetUri + "/" + file.getName();
1034             PutRequest copyFile = new PutRequest(this, getApiPath(), targetUsername, path) {
1035                 @Override
1036                 public void onSuccess(Resource result) {
1037                     copyFiles(iter, targetUsername, targetUri, callback);
1038                 }
1039
1040                 @Override
1041                 public void onError(Throwable t) {
1042                     GWT.log("", t);
1043                     setError(t);
1044                     if(t instanceof RestException) {
1045                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
1046                     }
1047                     else {
1048                         displayError("System error unable to copy file: " + t.getMessage());
1049                     }
1050                 }
1051
1052                 @Override
1053                 protected void onUnauthorized(Response response) {
1054                     sessionExpired();
1055                 }
1056             };
1057             copyFile.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1058             copyFile.setHeader(Const.X_COPY_FROM, URL.encodePathSegment(file.getUri()));
1059             if(!file.getOwnerID().equals(targetUsername)) {
1060                 copyFile.setHeader(Const.X_SOURCE_ACCOUNT, URL.encodePathSegment(file.getOwnerID()));
1061             }
1062             copyFile.setHeader(Const.CONTENT_TYPE, file.getContentType());
1063             Scheduler.get().scheduleDeferred(copyFile);
1064         }
1065         else if(callback != null) {
1066             callback.execute();
1067         }
1068     }
1069
1070     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, boolean move, final Command callback) {
1071         String path = targetUri + "?delimiter=/";
1072         PutRequest copyFolder = new PutRequest(this, getApiPath(), targetUsername, path) {
1073             @Override
1074             public void onSuccess(Resource result) {
1075                 if(callback != null) {
1076                     callback.execute();
1077                 }
1078             }
1079
1080             @Override
1081             public void onError(Throwable t) {
1082                 GWT.log("", t);
1083                 setError(t);
1084                 if(t instanceof RestException) {
1085                     displayError("Unable to copy folder: " + ((RestException) t).getHttpStatusText());
1086                 }
1087                 else {
1088                     displayError("System error copying folder: " + t.getMessage());
1089                 }
1090             }
1091
1092             @Override
1093             protected void onUnauthorized(Response response) {
1094                 sessionExpired();
1095             }
1096         };
1097         copyFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1098         copyFolder.setHeader(Const.ACCEPT, "*/*");
1099         copyFolder.setHeader(Const.CONTENT_LENGTH, "0");
1100         copyFolder.setHeader(Const.CONTENT_TYPE, "application/directory");
1101         if(!f.getOwnerID().equals(targetUsername)) {
1102             copyFolder.setHeader(Const.X_SOURCE_ACCOUNT, f.getOwnerID());
1103         }
1104         if(move) {
1105             copyFolder.setHeader(Const.X_MOVE_FROM, URL.encodePathSegment(f.getUri()));
1106         }
1107         else {
1108             copyFolder.setHeader(Const.X_COPY_FROM, URL.encodePathSegment(f.getUri()));
1109         }
1110         Scheduler.get().scheduleDeferred(copyFolder);
1111     }
1112
1113     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1114         selectionModels.add(model);
1115     }
1116
1117     public OtherSharedTreeView getOtherSharedTreeView() {
1118         return otherSharedTreeView;
1119     }
1120
1121     public void updateTrash(boolean showFiles, Command callback) {
1122         updateFolder(trash, showFiles, callback, true);
1123     }
1124
1125     public void updateGroupsNode() {
1126         groupTreeView.updateGroupNode(null);
1127     }
1128
1129     public Group addGroup(String groupName) {
1130         final Group group = new Group(groupName);
1131         account.addGroup(group);
1132         groupTreeView.updateGroupNode(null);
1133         return group;
1134     }
1135
1136     public void removeGroup(Group group) {
1137         account.removeGroup(group);
1138         updateGroupsNode();
1139     }
1140
1141     public TreeView getSelectedTree() {
1142         return selectedTree;
1143     }
1144
1145     public void setSelectedTree(TreeView selected) {
1146         selectedTree = selected;
1147     }
1148
1149     public Folder getSelection() {
1150         if(selectedTree != null) {
1151             return selectedTree.getSelection();
1152         }
1153         return null;
1154     }
1155
1156     public void showFolderStatistics(int folderFileCount) {
1157         numOfFiles.setHTML(String.valueOf(folderFileCount));
1158     }
1159
1160     public GroupTreeView getGroupTreeView() {
1161         return groupTreeView;
1162     }
1163
1164     public void sessionExpired() {
1165         new SessionExpiredDialog(this).center();
1166     }
1167
1168     public void updateRootFolder(Command callback) {
1169         updateFolder(account.getPithos(), false, callback, true);
1170     }
1171
1172     void createMySharedTree() {
1173         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1174         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1175             @Override
1176             public void onSelectionChange(SelectionChangeEvent event) {
1177                 if(mysharedTreeSelectionModel.getSelectedObject() != null) {
1178                     deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1179                     upload.setEnabled(false);
1180                     disableUploadArea();
1181                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1182                     showRelevantToolbarButtons();
1183                 }
1184                 else {
1185                     if(getSelectedTree().equals(mysharedTreeView)) {
1186                         setSelectedTree(null);
1187                     }
1188                     if(getSelectedTree() == null) {
1189                         showRelevantToolbarButtons();
1190                     }
1191                 }
1192             }
1193         });
1194         selectionModels.add(mysharedTreeSelectionModel);
1195         mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1196         mysharedTreeViewModel.initialize(new Command() {
1197
1198             @Override
1199             public void execute() {
1200                 mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1201                 trees.insert(mysharedTreeView, 2);
1202                 treeViews.add(mysharedTreeView);
1203                 createOtherSharedTree();
1204             }
1205         });
1206     }
1207
1208     void createOtherSharedTree() {
1209         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1210         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1211             @Override
1212             public void onSelectionChange(SelectionChangeEvent event) {
1213                 if(otherSharedTreeSelectionModel.getSelectedObject() != null) {
1214                     deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1215                     applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1216                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true, null);
1217                     showRelevantToolbarButtons();
1218                 }
1219                 else {
1220                     if(getSelectedTree().equals(otherSharedTreeView)) {
1221                         setSelectedTree(null);
1222                     }
1223                     if(getSelectedTree() == null) {
1224                         showRelevantToolbarButtons();
1225                     }
1226                 }
1227             }
1228         });
1229         selectionModels.add(otherSharedTreeSelectionModel);
1230         otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1231         otherSharedTreeViewModel.initialize(new Command() {
1232
1233             @Override
1234             public void execute() {
1235                 otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1236                 trees.insert(otherSharedTreeView, 1);
1237                 treeViews.add(otherSharedTreeView);
1238                 scheduleResfresh();
1239             }
1240         });
1241     }
1242
1243     public native void log1(String message)/*-{
1244       $wnd.console.log(message);
1245     }-*/;
1246
1247     public String getErrorData() {
1248         if(error != null) {
1249             return error.toString();
1250         }
1251         return "";
1252     }
1253
1254     public void setError(Throwable t) {
1255         error = t;
1256     }
1257
1258     public void showRelevantToolbarButtons() {
1259         toolbar.showRelevantButtons();
1260     }
1261
1262     public FileUploadDialog getFileUploadDialog() {
1263         if(fileUploadDialog == null) {
1264             fileUploadDialog = new FileUploadDialog(this);
1265         }
1266         return fileUploadDialog;
1267     }
1268
1269     public void hideUploadIndicator() {
1270         upload.removeStyleName("pithos-uploadButton-loading");
1271         upload.setTitle("");
1272     }
1273
1274     public void showUploadIndicator() {
1275         upload.addStyleName("pithos-uploadButton-loading");
1276         upload.setTitle("Upload in progress. Click for details.");
1277     }
1278
1279     public void scheduleFolderHeadCommand(final Folder folder, final Command callback) {
1280         if(folder == null) {
1281             if(callback != null) {
1282                 callback.execute();
1283             }
1284         }
1285         else {
1286             HeadRequest<Folder> headFolder = new HeadRequest<Folder>(this, Folder.class, getApiPath(), folder.getOwnerID(), folder.getUri(), folder) {
1287
1288                 @Override
1289                 public void onSuccess(Folder _result) {
1290                     if(callback != null) {
1291                         callback.execute();
1292                     }
1293                 }
1294
1295                 @Override
1296                 public void onError(Throwable t) {
1297                     if(t instanceof RestException) {
1298                         if(((RestException) t).getHttpStatusCode() == Response.SC_NOT_FOUND) {
1299                             final String path = folder.getUri();
1300                             PutRequest newFolder = new PutRequest(Pithos.this, getApiPath(), folder.getOwnerID(), path) {
1301                                 @Override
1302                                 public void onSuccess(Resource _result) {
1303                                     scheduleFolderHeadCommand(folder, callback);
1304                                 }
1305
1306                                 @Override
1307                                 public void onError(Throwable _t) {
1308                                     GWT.log("", _t);
1309                                     setError(_t);
1310                                     if(_t instanceof RestException) {
1311                                         displayError("Unable to create folder: " + ((RestException) _t).getHttpStatusText());
1312                                     }
1313                                     else {
1314                                         displayError("System error creating folder: " + _t.getMessage());
1315                                     }
1316                                 }
1317
1318                                 @Override
1319                                 protected void onUnauthorized(Response response) {
1320                                     sessionExpired();
1321                                 }
1322                             };
1323                             newFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1324                             newFolder.setHeader(Const.CONTENT_TYPE, "application/folder");
1325                             newFolder.setHeader(Const.ACCEPT, "*/*");
1326                             newFolder.setHeader(Const.CONTENT_LENGTH, "0");
1327                             Scheduler.get().scheduleDeferred(newFolder);
1328                         }
1329                         else if(((RestException) t).getHttpStatusCode() == Response.SC_FORBIDDEN) {
1330                             onSuccess(folder);
1331                         }
1332                         else {
1333                             displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
1334                         }
1335                     }
1336                     else {
1337                         displayError("System error heading folder: " + t.getMessage());
1338                     }
1339
1340                     GWT.log("Error heading folder", t);
1341                     setError(t);
1342                 }
1343
1344                 @Override
1345                 protected void onUnauthorized(Response response) {
1346                     sessionExpired();
1347                 }
1348             };
1349             headFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1350             Scheduler.get().scheduleDeferred(headFolder);
1351         }
1352     }
1353
1354     public void scheduleFileHeadCommand(File f, final Command callback) {
1355         HeadRequest<File> headFile = new HeadRequest<File>(this, File.class, getApiPath(), f.getOwnerID(), f.getUri(), f) {
1356
1357             @Override
1358             public void onSuccess(File _result) {
1359                 if(callback != null) {
1360                     callback.execute();
1361                 }
1362             }
1363
1364             @Override
1365             public void onError(Throwable t) {
1366                 GWT.log("Error heading file", t);
1367                 setError(t);
1368                 if(t instanceof RestException) {
1369                     displayError("Error heading file: " + ((RestException) t).getHttpStatusText());
1370                 }
1371                 else {
1372                     displayError("System error heading file: " + t.getMessage());
1373                 }
1374             }
1375
1376             @Override
1377             protected void onUnauthorized(Response response) {
1378                 sessionExpired();
1379             }
1380         };
1381         headFile.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1382         Scheduler.get().scheduleDeferred(headFile);
1383     }
1384
1385     public boolean isMySharedSelected() {
1386         return getSelectedTree().equals(getMySharedTreeView());
1387     }
1388
1389     private Folder getUploadFolder() {
1390         if(folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1391             return getSelection();
1392         }
1393         return null;
1394     }
1395
1396     private void updateUploadFolder() {
1397         updateUploadFolder(null);
1398     }
1399
1400     private void updateUploadFolder(final JsArrayString urls) {
1401         if(folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1402             Folder f = getSelection();
1403             if(getSelectedTree().equals(getFolderTreeView())) {
1404                 updateFolder(f, true, new Command() {
1405
1406                     @Override
1407                     public void execute() {
1408                         updateStatistics();
1409                         if(urls != null) {
1410                             selectUploadedFiles(urls);
1411                         }
1412                     }
1413                 }, false);
1414             }
1415             else {
1416                 updateOtherSharedFolder(f, true, null);
1417             }
1418         }
1419     }
1420
1421     public native void disableUploadArea() /*-{
1422       var uploader = $wnd.$("#uploader").pluploadQueue();
1423       var dropElm = $wnd.document.getElementById('rightPanel');
1424       $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1425     }-*/;
1426
1427     public native void enableUploadArea() /*-{
1428       var uploader = $wnd.$("#uploader").pluploadQueue();
1429       var dropElm = $wnd.document.getElementById('rightPanel');
1430       $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1431       if (uploader.runtime == 'html5') {
1432         uploader.settings.drop_element = 'rightPanel';
1433         uploader.trigger('PostInit');
1434       }
1435     }-*/;
1436
1437     public void showUploadAlert(int nOfFiles) {
1438         if(uploadAlert == null) {
1439             uploadAlert = new UploadAlert(this, nOfFiles);
1440         }
1441         if(!uploadAlert.isShowing()) {
1442             uploadAlert.setPopupPositionAndShow(new PopupPanel.PositionCallback() {
1443
1444                 @Override
1445                 public void setPosition(int offsetWidth, int offsetHeight) {
1446                     uploadAlert.setPopupPosition((Window.getClientWidth() - offsetWidth) / 2, statusPanel.getAbsoluteTop() - offsetHeight);
1447                 }
1448             });
1449         }
1450         uploadAlert.setNumOfFiles(nOfFiles);
1451     }
1452
1453     public void hideUploadAlert() {
1454         if(uploadAlert != null && uploadAlert.isShowing()) {
1455             uploadAlert.hide();
1456         }
1457     }
1458
1459     public void selectUploadedFiles(JsArrayString urls) {
1460         List<String> selectedUrls = new ArrayList<String>();
1461         for(int i = 0; i < urls.length(); i++) {
1462             selectedUrls.add(urls.get(i));
1463         }
1464         fileList.selectByUrl(selectedUrls);
1465     }
1466
1467     public void emptyContainer(final Folder container) {
1468         String path = "/" + container.getName() + "?delimiter=/";
1469         DeleteRequest delete = new DeleteRequest(this, getApiPath(), getUserID(), path) {
1470
1471             @Override
1472             protected void onUnauthorized(Response response) {
1473                 sessionExpired();
1474             }
1475
1476             @Override
1477             public void onSuccess(Resource result) {
1478                 updateFolder(container, true, null, true);
1479             }
1480
1481             @Override
1482             public void onError(Throwable t) {
1483                 GWT.log("Error deleting trash", t);
1484                 setError(t);
1485                 if(t instanceof RestException) {
1486                     displayError("Error deleting trash: " + ((RestException) t).getHttpStatusText());
1487                 }
1488                 else {
1489                     displayError("System error deleting trash: " + t.getMessage());
1490                 }
1491             }
1492         };
1493         delete.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1494         Scheduler.get().scheduleDeferred(delete);
1495     }
1496 }