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

   1 /*
   2  * Copyright 2011-2013 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     private static final boolean IsLOGEnabled = false;
  82     public static final boolean IsDetailedHTTPLOGEnabled = true;
  83     public static final boolean IsFullResponseBodyLOGEnabled = true;
  84
  85     public static final Set<String> HTTPHeadersToIgnoreInLOG = new HashSet<String>();
  86     static {
  87         HTTPHeadersToIgnoreInLOG.add(Const.HTTP_HEADER_CONNECTION);
  88         HTTPHeadersToIgnoreInLOG.add(Const.HTTP_HEADER_DATE);
  89         HTTPHeadersToIgnoreInLOG.add(Const.HTTP_HEADER_KEEP_ALIVE);
  90         HTTPHeadersToIgnoreInLOG.add(Const.HTTP_HEADER_SERVER);
  91         HTTPHeadersToIgnoreInLOG.add(Const.HTTP_HEADER_VARY);
  92         HTTPHeadersToIgnoreInLOG.add(Const.IF_MODIFIED_SINCE);
  93     }
  94
  95     public static final Configuration config = GWT.create(Configuration.class);
  96     public static final String CONFIG_API_PATH = config.apiPath();
  97     static {
  98         LOG("CONFIG_API_PATH = ", CONFIG_API_PATH);
  99     }
 100
 101     public static final Dictionary otherProperties = Dictionary.getDictionary(Const.OTHER_PROPERTIES);
 102     public static String getFromOtherPropertiesOrNull(String key) {
 103         try {
 104             return otherProperties.get(key);
 105         }
 106         catch(Exception e) {
 107             LOGError(e);
 108             return null;
 109         }
 110     }
 111     public static final String OTHERPROPS_STORAGE_API_URL = getFromOtherPropertiesOrNull("STORAGE_API_URL");
 112     public static final String OTHERPROPS_USER_CATALOGS_API_URL = getFromOtherPropertiesOrNull("USER_CATALOGS_API_URL");
 113     static {
 114         LOG("STORAGE_API_URL = ", OTHERPROPS_STORAGE_API_URL);
 115         LOG("USER_CATALOGS_API_URL = ", OTHERPROPS_USER_CATALOGS_API_URL);
 116     }
 117
 118     public static final String STORAGE_API_URL;
 119     static {
 120         if(OTHERPROPS_STORAGE_API_URL != null) {
 121             STORAGE_API_URL = OTHERPROPS_STORAGE_API_URL;
 122         }
 123         else if(CONFIG_API_PATH != null) {
 124             STORAGE_API_URL = CONFIG_API_PATH;
 125         }
 126         else {
 127             throw new RuntimeException("Unknown STORAGE_API_URL");
 128         }
 129     }
 130     public static final String USER_CATALOGS_API_URL;
 131     static {
 132         if(OTHERPROPS_USER_CATALOGS_API_URL != null) {
 133             USER_CATALOGS_API_URL = OTHERPROPS_USER_CATALOGS_API_URL;
 134         }
 135         else if(OTHERPROPS_STORAGE_API_URL != null) {
 136             throw new RuntimeException("STORAGE_API_URL is defined but USER_CATALOGS_API_URL is not");
 137         }
 138         else {
 139             // https://server.com/v1/ --> https://server.com
 140             String url = CONFIG_API_PATH;
 141             url = Helpers.stripTrailing(url, "/");
 142             url = Helpers.upToIncludingLastPart(url, "/");
 143             url = Helpers.stripTrailing(url, "/");
 144             url = url + "/user_catalogs";
 145
 146             USER_CATALOGS_API_URL = url;
 147
 148             LOG("USER_CATALOGS_API_URL = ", USER_CATALOGS_API_URL);
 149         }
 150     }
 151
 152     public interface Style extends CssResource {
 153         String commandAnchor();
 154
 155         String statistics();
 156
 157         @ClassName("gwt-HTML")
 158         String html();
 159
 160         String uploadAlert();
 161
 162         String uploadAlertLink();
 163
 164         String uploadAlertProgress();
 165
 166         String uploadAlertPercent();
 167
 168         String uploadAlertClose();
 169     }
 170
 171     public interface Resources extends ClientBundle {
 172         @Source("Pithos.css")
 173         Style pithosCss();
 174
 175         @Source("gr/grnet/pithos/resources/close-popup.png")
 176         ImageResource closePopup();
 177     }
 178
 179     public static Resources resources = GWT.create(Resources.class);
 180
 181     /**
 182      * Instantiate an application-level image bundle. This object will provide
 183      * programmatic access to all the images needed by widgets.
 184      */
 185     static Images images = (Images) GWT.create(Images.class);
 186
 187     public String getUserID() {
 188         return userID;
 189     }
 190
 191     public UserCatalogs getUserCatalogs() {
 192         return userCatalogs;
 193     }
 194
 195     public String getCurrentUserDisplayNameOrID() {
 196         final String displayName = userCatalogs.getDisplayName(getUserID());
 197         return displayName == null ? getUserID() : displayName;
 198     }
 199
 200     public boolean hasDisplayNameForUserID(String userID) {
 201         return userCatalogs.getDisplayName(userID) != null;
 202     }
 203
 204     public boolean hasIDForUserDisplayName(String userDisplayName) {
 205         return userCatalogs.getID(userDisplayName) != null;
 206     }
 207
 208     public String getDisplayNameForUserID(String userID) {
 209         return userCatalogs.getDisplayName(userID);
 210     }
 211
 212     public String getIDForUserDisplayName(String userDisplayName) {
 213         return userCatalogs.getID(userDisplayName);
 214     }
 215
 216     public List<String> getDisplayNamesForUserIDs(List<String> userIDs) {
 217         if(userIDs == null) {
 218             userIDs = new ArrayList<String>();
 219         }
 220         final List<String> userDisplayNames = new ArrayList<String>();
 221         for(String userID : userIDs) {
 222             final String displayName = getDisplayNameForUserID(userID);
 223             userDisplayNames.add(displayName);
 224         }
 225
 226         return userDisplayNames;
 227     }
 228
 229     public List<String> filterUserIDsWithUnknownDisplayName(Collection<String> userIDs) {
 230         if(userIDs == null) {
 231             userIDs = new ArrayList<String>();
 232         }
 233         final List<String> filtered = new ArrayList<String>();
 234         for(String userID : userIDs) {
 235             if(!this.userCatalogs.hasID(userID)) {
 236                 filtered.add(userID);
 237             }
 238         }
 239         return filtered;
 240     }
 241
 242     public void setAccount(AccountResource acct) {
 243         account = acct;
 244     }
 245
 246     public AccountResource getAccount() {
 247         return account;
 248     }
 249
 250     public void updateFolder(Folder f, boolean showfiles, Command callback, final boolean openParent) {
 251         folderTreeView.updateFolder(f, showfiles, callback, openParent);
 252     }
 253
 254     public void updateGroupNode(Group group) {
 255         groupTreeView.updateGroupNode(group);
 256     }
 257
 258     public void updateMySharedRoot() {
 259         mysharedTreeView.updateRoot();
 260     }
 261
 262     public void updateSharedFolder(Folder f, boolean showfiles, Command callback) {
 263         mysharedTreeView.updateFolder(f, showfiles, callback);
 264     }
 265
 266     public void updateSharedFolder(Folder f, boolean showfiles) {
 267         updateSharedFolder(f, showfiles, null);
 268     }
 269
 270     public void updateOtherSharedFolder(Folder f, boolean showfiles, Command callback) {
 271         otherSharedTreeView.updateFolder(f, showfiles, callback);
 272     }
 273
 274     public MysharedTreeView getMySharedTreeView() {
 275         return mysharedTreeView;
 276     }
 277
 278     /**
 279      * An aggregate image bundle that pulls together all the images for this
 280      * application into a single bundle.
 281      */
 282     public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 283
 284         @Source("gr/grnet/pithos/resources/document.png")
 285         ImageResource folders();
 286
 287         @Source("gr/grnet/pithos/resources/advancedsettings.png")
 288         @ImageOptions(width = 32, height = 32)
 289         ImageResource tools();
 290     }
 291
 292     private Throwable error;
 293
 294     /**
 295      * The Application Clipboard implementation;
 296      */
 297     private Clipboard clipboard = new Clipboard();
 298
 299     /**
 300      * The top panel that contains the menu bar.
 301      */
 302     private TopPanel topPanel;
 303
 304     /**
 305      * The panel that contains the various system messages.
 306      */
 307     private MessagePanel messagePanel = new MessagePanel(this, Pithos.images);
 308
 309     /**
 310      * The bottom panel that contains the status bar.
 311      */
 312     StatusPanel statusPanel = null;
 313
 314     /**
 315      * The file list widget.
 316      */
 317     private FileList fileList;
 318
 319     /**
 320      * The tab panel that occupies the right side of the screen.
 321      */
 322     private VerticalPanel inner = new VerticalPanel();
 323
 324
 325     /**
 326      * The split panel that will contain the left and right panels.
 327      */
 328     private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 329
 330     /**
 331      * The currently selected item in the application, for use by the Edit menu
 332      * commands. Potential types are Folder, File, User and Group.
 333      */
 334     private Object currentSelection;
 335
 336     public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 337
 338     /**
 339      * The ID that uniquely identifies the user in Pithos+.
 340      * Currently this is a UUID. It used to be the user's email.
 341      */
 342     private String userID = null;
 343
 344     /**
 345      * Holds mappings from user UUIDs to emails and vice-versa.
 346      */
 347     private UserCatalogs userCatalogs = new UserCatalogs();
 348
 349     /**
 350      * The authentication token of the current user.
 351      */
 352     private String userToken;
 353
 354     VerticalPanel trees;
 355
 356     SingleSelectionModel<Folder> folderTreeSelectionModel;
 357     FolderTreeViewModel folderTreeViewModel;
 358     FolderTreeView folderTreeView;
 359
 360     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 361     MysharedTreeViewModel mysharedTreeViewModel;
 362     MysharedTreeView mysharedTreeView = null;
 363
 364     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 365     OtherSharedTreeViewModel otherSharedTreeViewModel;
 366     OtherSharedTreeView otherSharedTreeView = null;
 367
 368     GroupTreeViewModel groupTreeViewModel;
 369     GroupTreeView groupTreeView;
 370
 371     TreeView selectedTree;
 372     protected AccountResource account;
 373
 374     Folder trash;
 375
 376     List<Composite> treeViews = new ArrayList<Composite>();
 377
 378     @SuppressWarnings("rawtypes")
 379     List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 380
 381     public Button upload;
 382
 383     private HTML numOfFiles;
 384
 385     private Toolbar toolbar;
 386
 387     private FileUploadDialog fileUploadDialog = new FileUploadDialog(this);
 388
 389     UploadAlert uploadAlert;
 390
 391     Date lastModified;
 392
 393     @Override
 394     public void onModuleLoad() {
 395         if(parseUserCredentials()) {
 396             initialize();
 397         }
 398     }
 399
 400     static native void __ConsoleLog(String message) /*-{
 401       try { console.log(message); } catch (e) {}
 402     }-*/;
 403
 404     public static void LOGError(Throwable error, StringBuilder sb) {
 405         if(!isLOGEnabled()) { return; }
 406
 407         sb.append("\nException: [" + error.toString().replace("\n", "\n  ") + "]");
 408         Throwable cause = error.getCause();
 409         if(cause != null) {
 410             sb.append("\nCauses:\n");
 411             while(cause != null) {
 412                 sb.append("  ");
 413                 sb.append("[" + cause.toString().replace("\n", "\n  ")  + "]");
 414                 sb.append("\n");
 415                 cause = cause.getCause();
 416             }
 417         }
 418         else {
 419             sb.append("\n");
 420         }
 421
 422         StackTraceElement[] stackTrace = error.getStackTrace();
 423         sb.append("Stack trace (" + stackTrace.length + " elements):\n");
 424         for(int i = 0; i < stackTrace.length; i++) {
 425             StackTraceElement errorElem = stackTrace[i];
 426             sb.append("  [" + i + "] ");
 427             sb.append(errorElem.toString());
 428             sb.append("\n");
 429         }
 430     }
 431
 432     public static void LOGError(Throwable error) {
 433         if(!isLOGEnabled()) { return; }
 434
 435         final StringBuilder sb = new StringBuilder();
 436         LOGError(error, sb);
 437         if(sb.length() > 0) {
 438             __ConsoleLog(sb.toString());
 439         }
 440     }
 441
 442     public static boolean isLOGEnabled() {
 443         return IsLOGEnabled;
 444     }
 445
 446     public static void LOG(Object ...args) {
 447         if(!isLOGEnabled()) { return; }
 448
 449         final StringBuilder sb = new StringBuilder();
 450         for(Object arg : args) {
 451             if(arg instanceof Throwable) {
 452                 LOGError((Throwable) arg, sb);
 453             }
 454             else {
 455                 sb.append(arg);
 456             }
 457         }
 458
 459         if(sb.length() > 0) {
 460             __ConsoleLog(sb.toString());
 461         }
 462     }
 463
 464     private void initialize() {
 465         userCatalogs.updateWithIDAndName("*", "All Pithos users");
 466
 467         lastModified = new Date(); //Initialize if-modified-since value with now.
 468         resources.pithosCss().ensureInjected();
 469         boolean bareContent = Window.Location.getParameter("noframe") != null;
 470         String contentWidth = bareContent ? Const.PERCENT_100 : Const.PERCENT_75;
 471
 472         VerticalPanel outer = new VerticalPanel();
 473         outer.setWidth(Const.PERCENT_100);
 474         if(!bareContent) {
 475             outer.addStyleName("pithos-outer");
 476         }
 477
 478         if(!bareContent) {
 479             topPanel = new TopPanel(this, Pithos.images);
 480             topPanel.setWidth(Const.PERCENT_100);
 481             outer.add(topPanel);
 482             outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 483         }
 484
 485         messagePanel.setVisible(false);
 486         outer.add(messagePanel);
 487         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 488         outer.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
 489
 490         HorizontalPanel header = new HorizontalPanel();
 491         header.addStyleName("pithos-header");
 492         header.setWidth(contentWidth);
 493         if(bareContent) {
 494             header.addStyleName("pithos-header-noframe");
 495         }
 496         upload = new Button("Upload", new ClickHandler() {
 497             @Override
 498             public void onClick(ClickEvent event) {
 499                 if(getSelection() != null) {
 500                     new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 501                 }
 502             }
 503         });
 504         upload.addStyleName("pithos-uploadButton");
 505         header.add(upload);
 506         header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 507         header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 508
 509         toolbar = new Toolbar(this);
 510         header.add(toolbar);
 511         header.setCellHorizontalAlignment(toolbar, HasHorizontalAlignment.ALIGN_CENTER);
 512         header.setCellVerticalAlignment(toolbar, HasVerticalAlignment.ALIGN_MIDDLE);
 513
 514         HorizontalPanel folderStatistics = new HorizontalPanel();
 515         folderStatistics.addStyleName("pithos-folderStatistics");
 516         numOfFiles = new HTML();
 517         folderStatistics.add(numOfFiles);
 518         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 519         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 520         folderStatistics.add(numOfFilesLabel);
 521         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 522         header.add(folderStatistics);
 523         header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 524         header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
 525         header.setCellWidth(folderStatistics, "40px");
 526         outer.add(header);
 527         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 528         // Inner contains the various lists
 529         inner.sinkEvents(Event.ONCONTEXTMENU);
 530         inner.setWidth(Const.PERCENT_100);
 531
 532         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 533         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 534             @Override
 535             public void onSelectionChange(SelectionChangeEvent event) {
 536                 if(folderTreeSelectionModel.getSelectedObject() != null) {
 537                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 538                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 539                     Folder f = folderTreeSelectionModel.getSelectedObject();
 540                     updateFolder(f, true, new Command() {
 541
 542                         @Override
 543                         public void execute() {
 544                             updateStatistics();
 545                         }
 546                     }, true);
 547                     showRelevantToolbarButtons();
 548                 }
 549                 else {
 550                     if(getSelectedTree().equals(folderTreeView)) {
 551                         setSelectedTree(null);
 552                     }
 553                     if(getSelectedTree() == null) {
 554                         showRelevantToolbarButtons();
 555                     }
 556                 }
 557             }
 558         });
 559         selectionModels.add(folderTreeSelectionModel);
 560
 561         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 562         folderTreeView = new FolderTreeView(folderTreeViewModel);
 563         treeViews.add(folderTreeView);
 564
 565         fileList = new FileList(this, images);
 566         inner.add(fileList);
 567
 568         trees = new VerticalPanel();
 569         trees.setWidth(Const.PERCENT_100);
 570
 571         // Add the left and right panels to the split panel.
 572         splitPanel.setLeftWidget(trees);
 573         FlowPanel right = new FlowPanel();
 574         right.getElement().setId("rightPanel");
 575         right.add(inner);
 576         splitPanel.setRightWidget(right);
 577         splitPanel.setSplitPosition("219px");
 578         splitPanel.setSize(Const.PERCENT_100, Const.PERCENT_100);
 579         splitPanel.addStyleName("pithos-splitPanel");
 580         splitPanel.setWidth(contentWidth);
 581         outer.add(splitPanel);
 582         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 583
 584         if(!bareContent) {
 585             statusPanel = new StatusPanel();
 586             statusPanel.setWidth(Const.PERCENT_100);
 587             outer.add(statusPanel);
 588             outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 589         }
 590         else {
 591             splitPanel.addStyleName("pithos-splitPanel-noframe");
 592         }
 593
 594         // Hook the window resize event, so that we can adjust the UI.
 595         Window.addResizeHandler(this);
 596         // Clear out the window's built-in margin, because we want to take
 597         // advantage of the entire client area.
 598         Window.setMargin("0px");
 599         // Finally, add the outer panel to the RootPanel, so that it will be
 600         // displayed.
 601         RootPanel.get().add(outer);
 602         // Call the window resized handler to get the initial sizes setup. Doing
 603         // this in a deferred command causes it to occur after all widgets'
 604         // sizes have been computed by the browser.
 605         Scheduler.get().scheduleIncremental(new RepeatingCommand() {
 606
 607             @Override
 608             public boolean execute() {
 609                 if(!isCloudbarReady()) {
 610                     return true;
 611                 }
 612                 onWindowResized(Window.getClientHeight());
 613                 return false;
 614             }
 615         });
 616
 617         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 618             @Override
 619             public void execute() {
 620                 LOG("Pithos::initialize() Calling Pithos::fetchAccount()");
 621                 fetchAccount(new Command() {
 622
 623                     @Override
 624                     public void execute() {
 625                         if(!account.hasHomeContainer()) {
 626                             createHomeContainer(account, this);
 627                         }
 628                         else if(!account.hasTrashContainer()) {
 629                             createTrashContainer(this);
 630                         }
 631                         else {
 632                             for(Folder f : account.getContainers()) {
 633                                 if(f.getName().equals(Const.TRASH_CONTAINER)) {
 634                                     trash = f;
 635                                     break;
 636                                 }
 637                             }
 638                             trees.add(folderTreeView);
 639                             folderTreeViewModel.initialize(account, new Command() {
 640
 641                                 @Override
 642                                 public void execute() {
 643                                     createMySharedTree();
 644                                 }
 645                             });
 646
 647                             HorizontalPanel separator = new HorizontalPanel();
 648                             separator.addStyleName("pithos-statisticsSeparator");
 649                             separator.add(new HTML(""));
 650                             trees.add(separator);
 651
 652                             groupTreeViewModel = new GroupTreeViewModel(Pithos.this);
 653                             groupTreeView = new GroupTreeView(groupTreeViewModel);
 654                             treeViews.add(groupTreeView);
 655                             trees.add(groupTreeView);
 656                             folderTreeView.showStatistics(account);
 657                         }
 658                     }
 659                 });
 660             }
 661         });
 662     }
 663
 664     public void scheduleResfresh() {
 665         Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
 666
 667             @Override
 668             public boolean execute() {
 669                 final Folder f = getSelection();
 670                 if(f == null) {
 671                     return true;
 672                 }
 673
 674                 HeadRequest<Folder> head = new HeadRequest<Folder>(Folder.class, getStorageAPIURL(), f.getOwnerID(), "/" + f.getContainer()) {
 675
 676                     @Override
 677                     public void onSuccess(Folder _result) {
 678                         lastModified = new Date();
 679                         if(getSelectedTree().equals(folderTreeView)) {
 680                             updateFolder(f, true, new Command() {
 681
 682                                 @Override
 683                                 public void execute() {
 684                                     scheduleResfresh();
 685                                 }
 686
 687                             }, false);
 688                         }
 689                         else if(getSelectedTree().equals(mysharedTreeView)) {
 690                             updateSharedFolder(f, true, new Command() {
 691
 692                                 @Override
 693                                 public void execute() {
 694                                     scheduleResfresh();
 695                                 }
 696                             });
 697                         }
 698                         else {
 699                             scheduleResfresh();
 700                         }
 701                     }
 702
 703                     @Override
 704                     public void onError(Throwable t) {
 705                         if(t instanceof RestException && ((RestException) t).getHttpStatusCode() == HttpStatus.SC_NOT_MODIFIED) {
 706                             scheduleResfresh();
 707                         }
 708                         else if(retries >= MAX_RETRIES) {
 709                             LOG("Error heading folder. ", t);
 710                             setError(t);
 711                             if(t instanceof RestException) {
 712                                 displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
 713                             }
 714                             else {
 715                                 displayError("System error heading folder: " + t.getMessage());
 716                             }
 717                         }
 718                         else {//retry
 719                             LOG("Retry ", retries);
 720                             Scheduler.get().scheduleDeferred(this);
 721                         }
 722                     }
 723
 724                     @Override
 725                     protected void onUnauthorized(Response response) {
 726                         if(retries >= MAX_RETRIES) {
 727                             sessionExpired();
 728                         }
 729                         else //retry
 730                         {
 731                             Scheduler.get().scheduleDeferred(this);
 732                         }
 733                     }
 734                 };
 735                 head.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 736                 head.setHeader(Const.IF_MODIFIED_SINCE, DateTimeFormat.getFormat(Const.DATE_FORMAT_1).format(lastModified, TimeZone.createTimeZone(0)) + " GMT");
 737                 Scheduler.get().scheduleDeferred(head);
 738
 739                 return false;
 740             }
 741         }, 3000);
 742     }
 743
 744     public void applyPermissions(Folder f) {
 745         if(f != null) {
 746             if(f.isInTrash()) {
 747                 upload.setEnabled(false);
 748                 disableUploadArea();
 749             }
 750             else {
 751                 Boolean[] perms = f.getPermissions().get(userID);
 752                 if(f.getOwnerID().equals(userID) || (perms != null && perms[1] != null && perms[1])) {
 753                     upload.setEnabled(true);
 754                     enableUploadArea();
 755                 }
 756                 else {
 757                     upload.setEnabled(false);
 758                     disableUploadArea();
 759                 }
 760             }
 761         }
 762         else {
 763             upload.setEnabled(false);
 764             disableUploadArea();
 765         }
 766     }
 767
 768     @SuppressWarnings({"rawtypes", "unchecked"})
 769     public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 770         selectedTree = _selectedTree;
 771
 772         for(SingleSelectionModel s : selectionModels) {
 773             if(!s.equals(model) && s.getSelectedObject() != null) {
 774                 s.setSelected(s.getSelectedObject(), false);
 775             }
 776         }
 777     }
 778
 779     public void showFiles(final Folder f) {
 780         Set<File> files = f.getFiles();
 781         showFiles(files);
 782     }
 783
 784     public void showFiles(Set<File> files) {
 785         fileList.setFiles(new ArrayList<File>(files));
 786     }
 787
 788     /**
 789      * Parse and store the user credentials to the appropriate fields.
 790      */
 791     private boolean parseUserCredentials() {
 792         final String cookie = otherProperties.get(Const.AUTH_COOKIE);
 793         String auth = Cookies.getCookie(cookie);
 794         if(auth == null) {
 795             authenticateUser();
 796             return false;
 797         }
 798         if(auth.startsWith("\"")) {
 799             auth = auth.substring(1);
 800         }
 801         if(auth.endsWith("\"")) {
 802             auth = auth.substring(0, auth.length() - 1);
 803         }
 804         String[] authSplit = auth.split("\\" + config.cookieSeparator(), 2);
 805         if(authSplit.length != 2) {
 806             authenticateUser();
 807             return false;
 808         }
 809         this.userID = authSplit[0];
 810         this.userToken = authSplit[1];
 811
 812         String gotoUrl = Window.Location.getParameter("goto");
 813         if(gotoUrl != null && gotoUrl.length() > 0) {
 814             Window.Location.assign(gotoUrl);
 815             return false;
 816         }
 817         return true;
 818     }
 819
 820     /**
 821      * Redirect the user to the login page for authentication.
 822      */
 823     protected void authenticateUser() {
 824         Dictionary otherProperties = Dictionary.getDictionary(Const.OTHER_PROPERTIES);
 825         Window.Location.assign(otherProperties.get(Const.LOGIN_URL) + Window.Location.getHref());
 826     }
 827
 828     public void fetchAccount(final Command callback) {
 829         String path = "?format=json";
 830
 831         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getStorageAPIURL(), userID, path) {
 832             @Override
 833             public void onSuccess(AccountResource accountResource) {
 834                 account = accountResource;
 835                 if(callback != null) {
 836                     callback.execute();
 837                 }
 838
 839                 final List<String> memberIDs = new ArrayList<String>();
 840                 final List<Group> groups = account.getGroups();
 841                 for(Group group : groups) {
 842                     memberIDs.addAll(group.getMemberIDs());
 843                 }
 844                 memberIDs.add(Pithos.this.getUserID());
 845
 846                 final List<String> theUnknown = Pithos.this.filterUserIDsWithUnknownDisplayName(memberIDs);
 847                 // Initialize the user catalog
 848                 new UpdateUserCatalogs(Pithos.this, theUnknown).scheduleDeferred();
 849                 LOG("Called new UpdateUserCatalogs(Pithos.this, theUnknown).scheduleDeferred();");
 850             }
 851
 852             @Override
 853             public void onError(Throwable t) {
 854                 LOG("Error getting account", t);
 855                 setError(t);
 856                 if(t instanceof RestException) {
 857                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 858                 }
 859                 else {
 860                     displayError("System error fetching user data: " + t.getMessage());
 861                 }
 862             }
 863
 864             @Override
 865             protected void onUnauthorized(Response response) {
 866                 sessionExpired();
 867             }
 868         };
 869         getAccount.setHeader(Const.X_AUTH_TOKEN, userToken);
 870         Scheduler.get().scheduleDeferred(getAccount);
 871     }
 872
 873     public void updateStatistics() {
 874         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getStorageAPIURL(), userID, "", account) {
 875
 876             @Override
 877             public void onSuccess(AccountResource _result) {
 878                 folderTreeView.showStatistics(account);
 879             }
 880
 881             @Override
 882             public void onError(Throwable t) {
 883                 LOG("Error getting account", t);
 884                 setError(t);
 885                 if(t instanceof RestException) {
 886                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 887                 }
 888                 else {
 889                     displayError("System error fetching user data: " + t.getMessage());
 890                 }
 891             }
 892
 893             @Override
 894             protected void onUnauthorized(Response response) {
 895                 sessionExpired();
 896             }
 897         };
 898         headAccount.setHeader(Const.X_AUTH_TOKEN, userToken);
 899         Scheduler.get().scheduleDeferred(headAccount);
 900     }
 901
 902     protected void createHomeContainer(final AccountResource _account, final Command callback) {
 903         String path = "/" + Const.HOME_CONTAINER;
 904         PutRequest createPithos = new PutRequest(getStorageAPIURL(), getUserID(), path) {
 905             @Override
 906             public void onSuccess(Resource result) {
 907                 if(!_account.hasTrashContainer()) {
 908                     createTrashContainer(callback);
 909                 }
 910                 else {
 911                     fetchAccount(callback);
 912                 }
 913             }
 914
 915             @Override
 916             public void onError(Throwable t) {
 917                 LOG("Error creating pithos", t);
 918                 setError(t);
 919                 if(t instanceof RestException) {
 920                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 921                 }
 922                 else {
 923                     displayError("System error Error creating pithos: " + t.getMessage());
 924                 }
 925             }
 926
 927             @Override
 928             protected void onUnauthorized(Response response) {
 929                 sessionExpired();
 930             }
 931         };
 932         createPithos.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 933         Scheduler.get().scheduleDeferred(createPithos);
 934     }
 935
 936     protected void createTrashContainer(final Command callback) {
 937         String path = "/" + Const.TRASH_CONTAINER;
 938         PutRequest createPithos = new PutRequest(getStorageAPIURL(), getUserID(), path) {
 939             @Override
 940             public void onSuccess(Resource result) {
 941                 fetchAccount(callback);
 942             }
 943
 944             @Override
 945             public void onError(Throwable t) {
 946                 LOG("Error creating pithos", t);
 947                 setError(t);
 948                 if(t instanceof RestException) {
 949                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 950                 }
 951                 else {
 952                     displayError("System error Error creating pithos: " + t.getMessage());
 953                 }
 954             }
 955
 956             @Override
 957             protected void onUnauthorized(Response response) {
 958                 sessionExpired();
 959             }
 960         };
 961         createPithos.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 962         Scheduler.get().scheduleDeferred(createPithos);
 963     }
 964
 965     /**
 966      * Creates an HTML fragment that places an image & caption together, for use
 967      * in a group header.
 968      *
 969      * @param imageProto an image prototype for an image
 970      * @param caption    the group caption
 971      * @return the header HTML fragment
 972      */
 973     private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 974         String captionHTML = "<table class='caption' cellpadding='0' "
 975             + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 976             + "</td><td id =" + caption + " class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 977             + caption + "</b></td></tr></table>";
 978         return captionHTML;
 979     }
 980
 981     protected void onWindowResized(int height) {
 982         // Adjust the split panel to take up the available room in the window.
 983         int newHeight = height - splitPanel.getAbsoluteTop() - 153;
 984         if(newHeight < 1) {
 985             newHeight = 1;
 986         }
 987         splitPanel.setHeight("" + newHeight);
 988         inner.setHeight("" + newHeight);
 989     }
 990
 991     native boolean isCloudbarReady()/*-{
 992       if ($wnd.$("div.cloudbar") && $wnd.$("div.cloudbar").height() > 0)
 993         return true;
 994       return false;
 995     }-*/;
 996
 997     @Override
 998     public void onResize(ResizeEvent event) {
 999         int height = event.getHeight();
1000         onWindowResized(height);
1001     }
1002
1003     /**
1004      * Display an error message.
1005      *
1006      * @param msg the message to display
1007      */
1008     public void displayError(String msg) {
1009         messagePanel.displayError(msg);
1010         onWindowResized(Window.getClientHeight());
1011     }
1012
1013     /**
1014      * Display a warning message.
1015      *
1016      * @param msg the message to display
1017      */
1018     public void displayWarning(String msg) {
1019         messagePanel.displayWarning(msg);
1020         onWindowResized(Window.getClientHeight());
1021     }
1022
1023     /**
1024      * Display an informational message.
1025      *
1026      * @param msg the message to display
1027      */
1028     public void displayInformation(String msg) {
1029         messagePanel.displayInformation(msg);
1030         onWindowResized(Window.getClientHeight());
1031     }
1032
1033     /**
1034      * Retrieve the fileList.
1035      *
1036      * @return the fileList
1037      */
1038     public FileList getFileList() {
1039         return fileList;
1040     }
1041
1042     /**
1043      * Retrieve the topPanel.
1044      *
1045      * @return the topPanel
1046      */
1047     TopPanel getTopPanel() {
1048         return topPanel;
1049     }
1050
1051     /**
1052      * Retrieve the clipboard.
1053      *
1054      * @return the clipboard
1055      */
1056     public Clipboard getClipboard() {
1057         return clipboard;
1058     }
1059
1060     public StatusPanel getStatusPanel() {
1061         return statusPanel;
1062     }
1063
1064     public String getUserToken() {
1065         return userToken;
1066     }
1067
1068     public static native void preventIESelection() /*-{
1069       $doc.body.onselectstart = function () {
1070         return false;
1071       };
1072     }-*/;
1073
1074     public static native void enableIESelection() /*-{
1075       if ($doc.body.onselectstart != null)
1076         $doc.body.onselectstart = null;
1077     }-*/;
1078
1079     public static String getStorageAPIURL() {
1080         return STORAGE_API_URL;
1081     }
1082
1083     public static String getUserCatalogsURL() {
1084         return USER_CATALOGS_API_URL;
1085     }
1086
1087     /**
1088      * History support for folder navigation
1089      * adds a new browser history entry
1090      *
1091      * @param key
1092      */
1093     public void updateHistory(String key) {
1094 //              Replace any whitespace of the initial string to "+"
1095 //              String result = key.replaceAll("\\s","+");
1096 //              Add a new browser history entry.
1097 //              History.newItem(result);
1098         History.newItem(key);
1099     }
1100
1101     public void deleteFolder(final Folder folder, final Command callback) {
1102         final PleaseWaitPopup pwp = new PleaseWaitPopup();
1103         pwp.center();
1104         String path = "/" + folder.getContainer() + "/" + folder.getPrefix() + "?delimiter=/" + "&t=" + System.currentTimeMillis();
1105         DeleteRequest deleteFolder = new DeleteRequest(getStorageAPIURL(), folder.getOwnerID(), path) {
1106
1107             @Override
1108             protected void onUnauthorized(Response response) {
1109                 pwp.hide();
1110                 sessionExpired();
1111             }
1112
1113             @Override
1114             public void onSuccess(Resource result) {
1115                 updateFolder(folder.getParent(), true, new Command() {
1116
1117                     @Override
1118                     public void execute() {
1119                         folderTreeSelectionModel.setSelected(folder.getParent(), true);
1120                         updateStatistics();
1121                         if(callback != null) {
1122                             callback.execute();
1123                         }
1124                         pwp.hide();
1125                     }
1126                 }, true);
1127             }
1128
1129             @Override
1130             public void onError(Throwable t) {
1131                 LOG(t);
1132                 setError(t);
1133                 if(t instanceof RestException) {
1134                     if(((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND) {
1135                         displayError("Unable to delete folder: " + ((RestException) t).getHttpStatusText());
1136                     }
1137                     else {
1138                         onSuccess(null);
1139                     }
1140                 }
1141                 else {
1142                     displayError("System error unable to delete folder: " + t.getMessage());
1143                 }
1144                 pwp.hide();
1145             }
1146         };
1147         deleteFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1148         Scheduler.get().scheduleDeferred(deleteFolder);
1149     }
1150
1151     public FolderTreeView getFolderTreeView() {
1152         return folderTreeView;
1153     }
1154
1155     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
1156         if(iter.hasNext()) {
1157             File file = iter.next();
1158             String path = targetUri + "/" + file.getName();
1159             PutRequest copyFile = new PutRequest(getStorageAPIURL(), targetUsername, path) {
1160                 @Override
1161                 public void onSuccess(Resource result) {
1162                     copyFiles(iter, targetUsername, targetUri, callback);
1163                 }
1164
1165                 @Override
1166                 public void onError(Throwable t) {
1167                     LOG(t);
1168                     setError(t);
1169                     if(t instanceof RestException) {
1170                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
1171                     }
1172                     else {
1173                         displayError("System error unable to copy file: " + t.getMessage());
1174                     }
1175                 }
1176
1177                 @Override
1178                 protected void onUnauthorized(Response response) {
1179                     sessionExpired();
1180                 }
1181             };
1182             copyFile.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1183             copyFile.setHeader(Const.X_COPY_FROM, URL.encodePathSegment(file.getUri()));
1184             if(!file.getOwnerID().equals(targetUsername)) {
1185                 copyFile.setHeader(Const.X_SOURCE_ACCOUNT, URL.encodePathSegment(file.getOwnerID()));
1186             }
1187             copyFile.setHeader(Const.CONTENT_TYPE, file.getContentType());
1188             Scheduler.get().scheduleDeferred(copyFile);
1189         }
1190         else if(callback != null) {
1191             callback.execute();
1192         }
1193     }
1194
1195     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, boolean move, final Command callback) {
1196         String path = targetUri + "?delimiter=/";
1197         PutRequest copyFolder = new PutRequest(getStorageAPIURL(), targetUsername, path) {
1198             @Override
1199             public void onSuccess(Resource result) {
1200                 if(callback != null) {
1201                     callback.execute();
1202                 }
1203             }
1204
1205             @Override
1206             public void onError(Throwable t) {
1207                 LOG(t);
1208                 setError(t);
1209                 if(t instanceof RestException) {
1210                     displayError("Unable to copy folder: " + ((RestException) t).getHttpStatusText());
1211                 }
1212                 else {
1213                     displayError("System error copying folder: " + t.getMessage());
1214                 }
1215             }
1216
1217             @Override
1218             protected void onUnauthorized(Response response) {
1219                 sessionExpired();
1220             }
1221         };
1222         copyFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1223         copyFolder.setHeader(Const.ACCEPT, "*/*");
1224         copyFolder.setHeader(Const.CONTENT_LENGTH, "0");
1225         copyFolder.setHeader(Const.CONTENT_TYPE, "application/directory");
1226         if(!f.getOwnerID().equals(targetUsername)) {
1227             copyFolder.setHeader(Const.X_SOURCE_ACCOUNT, f.getOwnerID());
1228         }
1229         if(move) {
1230             copyFolder.setHeader(Const.X_MOVE_FROM, URL.encodePathSegment(f.getUri()));
1231         }
1232         else {
1233             copyFolder.setHeader(Const.X_COPY_FROM, URL.encodePathSegment(f.getUri()));
1234         }
1235         Scheduler.get().scheduleDeferred(copyFolder);
1236     }
1237
1238     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1239         selectionModels.add(model);
1240     }
1241
1242     public OtherSharedTreeView getOtherSharedTreeView() {
1243         return otherSharedTreeView;
1244     }
1245
1246     public void updateTrash(boolean showFiles, Command callback) {
1247         updateFolder(trash, showFiles, callback, true);
1248     }
1249
1250     public void updateGroupsNode() {
1251         groupTreeView.updateGroupNode(null);
1252     }
1253
1254     public Group addGroup(String groupname) {
1255         Group newGroup = new Group(groupname);
1256         account.addGroup(newGroup);
1257         groupTreeView.updateGroupNode(null);
1258         return newGroup;
1259     }
1260
1261     public void removeGroup(Group group) {
1262         account.removeGroup(group);
1263         updateGroupsNode();
1264     }
1265
1266     public TreeView getSelectedTree() {
1267         return selectedTree;
1268     }
1269
1270     public void setSelectedTree(TreeView selected) {
1271         selectedTree = selected;
1272     }
1273
1274     public Folder getSelection() {
1275         if(selectedTree != null) {
1276             return selectedTree.getSelection();
1277         }
1278         return null;
1279     }
1280
1281     public void showFolderStatistics(int folderFileCount) {
1282         numOfFiles.setHTML(String.valueOf(folderFileCount));
1283     }
1284
1285     public GroupTreeView getGroupTreeView() {
1286         return groupTreeView;
1287     }
1288
1289     public void sessionExpired() {
1290         new SessionExpiredDialog(this).center();
1291     }
1292
1293     public void updateRootFolder(Command callback) {
1294         updateFolder(account.getPithos(), false, callback, true);
1295     }
1296
1297     void createMySharedTree() {
1298         LOG("Pithos::createMySharedTree()");
1299         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1300         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1301             @Override
1302             public void onSelectionChange(SelectionChangeEvent event) {
1303                 if(mysharedTreeSelectionModel.getSelectedObject() != null) {
1304                     deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1305                     upload.setEnabled(false);
1306                     disableUploadArea();
1307                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1308                     showRelevantToolbarButtons();
1309                 }
1310                 else {
1311                     if(getSelectedTree().equals(mysharedTreeView)) {
1312                         setSelectedTree(null);
1313                     }
1314                     if(getSelectedTree() == null) {
1315                         showRelevantToolbarButtons();
1316                     }
1317                 }
1318             }
1319         });
1320         selectionModels.add(mysharedTreeSelectionModel);
1321         mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1322         mysharedTreeViewModel.initialize(new Command() {
1323
1324             @Override
1325             public void execute() {
1326                 mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1327                 trees.insert(mysharedTreeView, 2);
1328                 treeViews.add(mysharedTreeView);
1329                 createOtherSharedTree();
1330             }
1331         });
1332     }
1333
1334     void createOtherSharedTree() {
1335         LOG("Pithos::createOtherSharedTree()");
1336         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1337         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1338             @Override
1339             public void onSelectionChange(SelectionChangeEvent event) {
1340                 if(otherSharedTreeSelectionModel.getSelectedObject() != null) {
1341                     deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1342                     applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1343                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true, null);
1344                     showRelevantToolbarButtons();
1345                 }
1346                 else {
1347                     if(getSelectedTree().equals(otherSharedTreeView)) {
1348                         setSelectedTree(null);
1349                     }
1350                     if(getSelectedTree() == null) {
1351                         showRelevantToolbarButtons();
1352                     }
1353                 }
1354             }
1355         });
1356         selectionModels.add(otherSharedTreeSelectionModel);
1357         otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1358         // #3784 We show it empty...
1359         otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1360         trees.insert(otherSharedTreeView, 1);
1361
1362         LOG("Pithos::createOtherSharedTree(), initializing otherSharedTreeViewModel with a callback");
1363         otherSharedTreeViewModel.initialize(new Command() {
1364             @Override
1365             public void execute() {
1366                 // #3784 ... then remove the empty stuff and add a new view with the populated model
1367                 trees.remove(otherSharedTreeView);
1368
1369                 otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1370                 trees.insert(otherSharedTreeView, 1);
1371                 treeViews.add(otherSharedTreeView);
1372                 scheduleResfresh();
1373             }
1374         });
1375     }
1376
1377     public String getErrorData() {
1378         final StringBuilder sb = new StringBuilder();
1379         final String NL = Const.NL;
1380         Throwable t = this.error;
1381         while(t != null) {
1382             sb.append(t.toString());
1383             sb.append(NL);
1384             StackTraceElement[] traces = t.getStackTrace();
1385             for(StackTraceElement trace : traces) {
1386                 sb.append("  [");
1387                 sb.append(trace.getClassName());
1388                 sb.append("::");
1389                 sb.append(trace.getMethodName());
1390                 sb.append("() at ");
1391                 sb.append(trace.getFileName());
1392                 sb.append(":");
1393                 sb.append(trace.getLineNumber());
1394                 sb.append("]");
1395                 sb.append(NL);
1396             }
1397             t = t.getCause();
1398         }
1399
1400         return sb.toString();
1401     }
1402
1403     public void setError(Throwable t) {
1404         error = t;
1405         LOG(t);
1406     }
1407
1408     public void showRelevantToolbarButtons() {
1409         toolbar.showRelevantButtons();
1410     }
1411
1412     public FileUploadDialog getFileUploadDialog() {
1413         if(fileUploadDialog == null) {
1414             fileUploadDialog = new FileUploadDialog(this);
1415         }
1416         return fileUploadDialog;
1417     }
1418
1419     public void hideUploadIndicator() {
1420         upload.removeStyleName("pithos-uploadButton-loading");
1421         upload.setTitle("");
1422     }
1423
1424     public void showUploadIndicator() {
1425         upload.addStyleName("pithos-uploadButton-loading");
1426         upload.setTitle("Upload in progress. Click for details.");
1427     }
1428
1429     public void scheduleFolderHeadCommand(final Folder folder, final Command callback) {
1430         if(folder == null) {
1431             if(callback != null) {
1432                 callback.execute();
1433             }
1434         }
1435         else {
1436             HeadRequest<Folder> headFolder = new HeadRequest<Folder>(Folder.class, getStorageAPIURL(), folder.getOwnerID(), folder.getUri(), folder) {
1437
1438                 @Override
1439                 public void onSuccess(Folder _result) {
1440                     if(callback != null) {
1441                         callback.execute();
1442                     }
1443                 }
1444
1445                 @Override
1446                 public void onError(Throwable t) {
1447                     if(t instanceof RestException) {
1448                         if(((RestException) t).getHttpStatusCode() == Response.SC_NOT_FOUND) {
1449                             final String path = folder.getUri();
1450                             PutRequest newFolder = new PutRequest(getStorageAPIURL(), folder.getOwnerID(), path) {
1451                                 @Override
1452                                 public void onSuccess(Resource _result) {
1453                                     scheduleFolderHeadCommand(folder, callback);
1454                                 }
1455
1456                                 @Override
1457                                 public void onError(Throwable _t) {
1458                                     setError(_t);
1459                                     if(_t instanceof RestException) {
1460                                         displayError("Unable to create folder: " + ((RestException) _t).getHttpStatusText());
1461                                     }
1462                                     else {
1463                                         displayError("System error creating folder: " + _t.getMessage());
1464                                     }
1465                                 }
1466
1467                                 @Override
1468                                 protected void onUnauthorized(Response response) {
1469                                     sessionExpired();
1470                                 }
1471                             };
1472                             newFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1473                             newFolder.setHeader(Const.CONTENT_TYPE, "application/folder");
1474                             newFolder.setHeader(Const.ACCEPT, "*/*");
1475                             newFolder.setHeader(Const.CONTENT_LENGTH, "0");
1476                             Scheduler.get().scheduleDeferred(newFolder);
1477                         }
1478                         else if(((RestException) t).getHttpStatusCode() == Response.SC_FORBIDDEN) {
1479                             onSuccess(folder);
1480                         }
1481                         else {
1482                             displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
1483                         }
1484                     }
1485                     else {
1486                         displayError("System error heading folder: " + t.getMessage());
1487                     }
1488
1489                     LOG("Error heading folder", t);
1490                     setError(t);
1491                 }
1492
1493                 @Override
1494                 protected void onUnauthorized(Response response) {
1495                     sessionExpired();
1496                 }
1497             };
1498             headFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1499             Scheduler.get().scheduleDeferred(headFolder);
1500         }
1501     }
1502
1503     public void scheduleFileHeadCommand(File f, final Command callback) {
1504         HeadRequest<File> headFile = new HeadRequest<File>(File.class, getStorageAPIURL(), f.getOwnerID(), f.getUri(), f) {
1505
1506             @Override
1507             public void onSuccess(File _result) {
1508                 if(callback != null) {
1509                     callback.execute();
1510                 }
1511             }
1512
1513             @Override
1514             public void onError(Throwable t) {
1515                 LOG("Error heading file", t);
1516                 setError(t);
1517                 if(t instanceof RestException) {
1518                     displayError("Error heading file: " + ((RestException) t).getHttpStatusText());
1519                 }
1520                 else {
1521                     displayError("System error heading file: " + t.getMessage());
1522                 }
1523             }
1524
1525             @Override
1526             protected void onUnauthorized(Response response) {
1527                 sessionExpired();
1528             }
1529         };
1530         headFile.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1531         Scheduler.get().scheduleDeferred(headFile);
1532     }
1533
1534     public boolean isMySharedSelected() {
1535         return getSelectedTree().equals(getMySharedTreeView());
1536     }
1537
1538     private Folder getUploadFolder() {
1539         if(folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1540             return getSelection();
1541         }
1542         return null;
1543     }
1544
1545     private void updateUploadFolder() {
1546         updateUploadFolder(null);
1547     }
1548
1549     private void updateUploadFolder(final JsArrayString urls) {
1550         if(folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1551             Folder f = getSelection();
1552             if(getSelectedTree().equals(getFolderTreeView())) {
1553                 updateFolder(f, true, new Command() {
1554
1555                     @Override
1556                     public void execute() {
1557                         updateStatistics();
1558                         if(urls != null) {
1559                             selectUploadedFiles(urls);
1560                         }
1561                     }
1562                 }, false);
1563             }
1564             else {
1565                 updateOtherSharedFolder(f, true, null);
1566             }
1567         }
1568     }
1569
1570     public native void disableUploadArea() /*-{
1571       var uploader = $wnd.$("#uploader").pluploadQueue();
1572       var dropElm = $wnd.document.getElementById('rightPanel');
1573       $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1574     }-*/;
1575
1576     public native void enableUploadArea() /*-{
1577       var uploader = $wnd.$("#uploader").pluploadQueue();
1578       var dropElm = $wnd.document.getElementById('rightPanel');
1579       $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1580       if (uploader.runtime == 'html5') {
1581         uploader.settings.drop_element = 'rightPanel';
1582         uploader.trigger('PostInit');
1583       }
1584     }-*/;
1585
1586     public void showUploadAlert(int nOfFiles) {
1587         if(uploadAlert == null) {
1588             uploadAlert = new UploadAlert(this, nOfFiles);
1589         }
1590         if(!uploadAlert.isShowing()) {
1591             uploadAlert.setPopupPositionAndShow(new PopupPanel.PositionCallback() {
1592
1593                 @Override
1594                 public void setPosition(int offsetWidth, int offsetHeight) {
1595                     uploadAlert.setPopupPosition((Window.getClientWidth() - offsetWidth) / 2, statusPanel.getAbsoluteTop() - offsetHeight);
1596                 }
1597             });
1598         }
1599         uploadAlert.setNumOfFiles(nOfFiles);
1600     }
1601
1602     public void hideUploadAlert() {
1603         if(uploadAlert != null && uploadAlert.isShowing()) {
1604             uploadAlert.hide();
1605         }
1606     }
1607
1608     public void selectUploadedFiles(JsArrayString urls) {
1609         List<String> selectedUrls = new ArrayList<String>();
1610         for(int i = 0; i < urls.length(); i++) {
1611             selectedUrls.add(urls.get(i));
1612         }
1613         fileList.selectByUrl(selectedUrls);
1614     }
1615
1616     public void purgeContainer(final Folder container) {
1617         String path = "/" + container.getName() + "?delimiter=/";
1618         DeleteRequest delete = new DeleteRequest(getStorageAPIURL(), getUserID(), path) {
1619
1620             @Override
1621             protected void onUnauthorized(Response response) {
1622                 sessionExpired();
1623             }
1624
1625             @Override
1626             public void onSuccess(Resource result) {
1627                 updateFolder(container, true, null, true);
1628             }
1629
1630             @Override
1631             public void onError(Throwable t) {
1632                 LOG("Error deleting trash", t);
1633                 setError(t);
1634                 if(t instanceof RestException) {
1635                     displayError("Error deleting trash: " + ((RestException) t).getHttpStatusText());
1636                 }
1637                 else {
1638                     displayError("System error deleting trash: " + t.getMessage());
1639                 }
1640             }
1641         };
1642         delete.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1643         Scheduler.get().scheduleDeferred(delete);
1644     }
1645 }