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 getFromOtherPropertiesOrDefault(String key, String def) {
 103         try {
 104             final String value = otherProperties.get(key);
 105             return value == null ? def : value;
 106         }
 107         catch(Exception e) {
 108             return def;
 109         }
 110     }
 111
 112     public static String getFromOtherPropertiesOrNull(String key) {
 113         return getFromOtherPropertiesOrDefault(key, null);
 114     }
 115
 116     public static final String OTHERPROPS_STORAGE_API_URL = getFromOtherPropertiesOrNull("STORAGE_API_URL");
 117     public static final String OTHERPROPS_USER_CATALOGS_API_URL = getFromOtherPropertiesOrNull("USER_CATALOGS_API_URL");
 118     static {
 119         LOG("STORAGE_API_URL = ", OTHERPROPS_STORAGE_API_URL);
 120         LOG("USER_CATALOGS_API_URL = ", OTHERPROPS_USER_CATALOGS_API_URL);
 121     }
 122
 123     public static final String STORAGE_API_URL;
 124     static {
 125         if(OTHERPROPS_STORAGE_API_URL != null) {
 126             STORAGE_API_URL = OTHERPROPS_STORAGE_API_URL;
 127         }
 128         else if(CONFIG_API_PATH != null) {
 129             STORAGE_API_URL = CONFIG_API_PATH;
 130         }
 131         else {
 132             throw new RuntimeException("Unknown STORAGE_API_URL");
 133         }
 134
 135         LOG("Computed STORAGE_API_URL = ", STORAGE_API_URL);
 136     }
 137
 138     public static final String STORAGE_VIEW_URL;
 139     static {
 140         final String viewURL = getFromOtherPropertiesOrNull("STORAGE_VIEW_URL");
 141         if(viewURL != null) {
 142             STORAGE_VIEW_URL = viewURL;
 143         }
 144         else {
 145             STORAGE_VIEW_URL = STORAGE_API_URL;
 146         }
 147
 148         LOG("Computed STORAGE_VIEW_URL = ", STORAGE_VIEW_URL);
 149     }
 150
 151     public static final String PUBLIC_LINK_VIEW_PREFIX = getFromOtherPropertiesOrDefault("PUBLIC_LINK_VIEW_PREFIX", "");
 152
 153     public static final String USER_CATALOGS_API_URL;
 154     static {
 155         if(OTHERPROPS_USER_CATALOGS_API_URL != null) {
 156             USER_CATALOGS_API_URL = OTHERPROPS_USER_CATALOGS_API_URL;
 157         }
 158         else if(OTHERPROPS_STORAGE_API_URL != null) {
 159             throw new RuntimeException("STORAGE_API_URL is defined but USER_CATALOGS_API_URL is not");
 160         }
 161         else {
 162             // https://server.com/v1/ --> https://server.com
 163             String url = CONFIG_API_PATH;
 164             url = Helpers.stripTrailing(url, "/");
 165             url = Helpers.upToIncludingLastPart(url, "/");
 166             url = Helpers.stripTrailing(url, "/");
 167             url = url + "/user_catalogs";
 168
 169             USER_CATALOGS_API_URL = url;
 170
 171             LOG("Computed USER_CATALOGS_API_URL = ", USER_CATALOGS_API_URL);
 172         }
 173     }
 174
 175     public interface Style extends CssResource {
 176         String commandAnchor();
 177
 178         String statistics();
 179
 180         @ClassName("gwt-HTML")
 181         String html();
 182
 183         String uploadAlert();
 184
 185         String uploadAlertLink();
 186
 187         String uploadAlertProgress();
 188
 189         String uploadAlertPercent();
 190
 191         String uploadAlertClose();
 192     }
 193
 194     public interface Resources extends ClientBundle {
 195         @Source("Pithos.css")
 196         Style pithosCss();
 197
 198         @Source("gr/grnet/pithos/resources/close-popup.png")
 199         ImageResource closePopup();
 200     }
 201
 202     public static Resources resources = GWT.create(Resources.class);
 203
 204     /**
 205      * Instantiate an application-level image bundle. This object will provide
 206      * programmatic access to all the images needed by widgets.
 207      */
 208     static Images images = (Images) GWT.create(Images.class);
 209
 210     public String getUserID() {
 211         return userID;
 212     }
 213
 214     public UserCatalogs getUserCatalogs() {
 215         return userCatalogs;
 216     }
 217
 218     public String getCurrentUserDisplayNameOrID() {
 219         final String displayName = userCatalogs.getDisplayName(getUserID());
 220         return displayName == null ? getUserID() : displayName;
 221     }
 222
 223     public boolean hasDisplayNameForUserID(String userID) {
 224         return userCatalogs.getDisplayName(userID) != null;
 225     }
 226
 227     public boolean hasIDForUserDisplayName(String userDisplayName) {
 228         return userCatalogs.getID(userDisplayName) != null;
 229     }
 230
 231     public String getDisplayNameForUserID(String userID) {
 232         return userCatalogs.getDisplayName(userID);
 233     }
 234
 235     public String getIDForUserDisplayName(String userDisplayName) {
 236         return userCatalogs.getID(userDisplayName);
 237     }
 238
 239     public List<String> getDisplayNamesForUserIDs(List<String> userIDs) {
 240         if(userIDs == null) {
 241             userIDs = new ArrayList<String>();
 242         }
 243         final List<String> userDisplayNames = new ArrayList<String>();
 244         for(String userID : userIDs) {
 245             final String displayName = getDisplayNameForUserID(userID);
 246             userDisplayNames.add(displayName);
 247         }
 248
 249         return userDisplayNames;
 250     }
 251
 252     public List<String> filterUserIDsWithUnknownDisplayName(Collection<String> userIDs) {
 253         if(userIDs == null) {
 254             userIDs = new ArrayList<String>();
 255         }
 256         final List<String> filtered = new ArrayList<String>();
 257         for(String userID : userIDs) {
 258             if(!this.userCatalogs.hasID(userID)) {
 259                 filtered.add(userID);
 260             }
 261         }
 262         return filtered;
 263     }
 264
 265     public void setAccount(AccountResource acct) {
 266         account = acct;
 267     }
 268
 269     public AccountResource getAccount() {
 270         return account;
 271     }
 272
 273     public void updateFolder(Folder f, boolean showfiles, Command callback, final boolean openParent) {
 274         folderTreeView.updateFolder(f, showfiles, callback, openParent);
 275     }
 276
 277     public void updateGroupNode(Group group) {
 278         groupTreeView.updateGroupNode(group);
 279     }
 280
 281     public void updateMySharedRoot() {
 282         mysharedTreeView.updateRoot();
 283     }
 284
 285     public void updateSharedFolder(Folder f, boolean showfiles, Command callback) {
 286         mysharedTreeView.updateFolder(f, showfiles, callback);
 287     }
 288
 289     public void updateSharedFolder(Folder f, boolean showfiles) {
 290         updateSharedFolder(f, showfiles, null);
 291     }
 292
 293     public void updateOtherSharedFolder(Folder f, boolean showfiles, Command callback) {
 294         otherSharedTreeView.updateFolder(f, showfiles, callback);
 295     }
 296
 297     public MysharedTreeView getMySharedTreeView() {
 298         return mysharedTreeView;
 299     }
 300
 301     /**
 302      * An aggregate image bundle that pulls together all the images for this
 303      * application into a single bundle.
 304      */
 305     public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 306
 307         @Source("gr/grnet/pithos/resources/document.png")
 308         ImageResource folders();
 309
 310         @Source("gr/grnet/pithos/resources/advancedsettings.png")
 311         @ImageOptions(width = 32, height = 32)
 312         ImageResource tools();
 313     }
 314
 315     private Throwable error;
 316
 317     /**
 318      * The Application Clipboard implementation;
 319      */
 320     private Clipboard clipboard = new Clipboard();
 321
 322     /**
 323      * The top panel that contains the menu bar.
 324      */
 325     private TopPanel topPanel;
 326
 327     /**
 328      * The panel that contains the various system messages.
 329      */
 330     private MessagePanel messagePanel = new MessagePanel(this, Pithos.images);
 331
 332     /**
 333      * The bottom panel that contains the status bar.
 334      */
 335     StatusPanel statusPanel = null;
 336
 337     /**
 338      * The file list widget.
 339      */
 340     private FileList fileList;
 341
 342     /**
 343      * The tab panel that occupies the right side of the screen.
 344      */
 345     private VerticalPanel inner = new VerticalPanel();
 346
 347
 348     /**
 349      * The split panel that will contain the left and right panels.
 350      */
 351     private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 352
 353     /**
 354      * The currently selected item in the application, for use by the Edit menu
 355      * commands. Potential types are Folder, File, User and Group.
 356      */
 357     private Object currentSelection;
 358
 359     public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 360
 361     /**
 362      * The ID that uniquely identifies the user in Pithos+.
 363      * Currently this is a UUID. It used to be the user's email.
 364      */
 365     private String userID = null;
 366
 367     /**
 368      * Holds mappings from user UUIDs to emails and vice-versa.
 369      */
 370     private UserCatalogs userCatalogs = new UserCatalogs();
 371
 372     /**
 373      * The authentication token of the current user.
 374      */
 375     private String userToken;
 376
 377     VerticalPanel trees;
 378
 379     SingleSelectionModel<Folder> folderTreeSelectionModel;
 380     FolderTreeViewModel folderTreeViewModel;
 381     FolderTreeView folderTreeView;
 382
 383     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 384     MysharedTreeViewModel mysharedTreeViewModel;
 385     MysharedTreeView mysharedTreeView = null;
 386
 387     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 388     OtherSharedTreeViewModel otherSharedTreeViewModel;
 389     OtherSharedTreeView otherSharedTreeView = null;
 390
 391     GroupTreeViewModel groupTreeViewModel;
 392     GroupTreeView groupTreeView;
 393
 394     TreeView selectedTree;
 395     protected AccountResource account;
 396
 397     Folder trash;
 398
 399     List<Composite> treeViews = new ArrayList<Composite>();
 400
 401     @SuppressWarnings("rawtypes")
 402     List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 403
 404     public Button upload;
 405
 406     private HTML numOfFiles;
 407
 408     private Toolbar toolbar;
 409
 410     private FileUploadDialog fileUploadDialog = new FileUploadDialog(this);
 411
 412     UploadAlert uploadAlert;
 413
 414     Date lastModified;
 415
 416     @Override
 417     public void onModuleLoad() {
 418         if(parseUserCredentials()) {
 419             initialize();
 420         }
 421     }
 422
 423     static native void __ConsoleLog(String message) /*-{
 424       try { console.log(message); } catch (e) {}
 425     }-*/;
 426
 427     public static void LOGError(Throwable error, StringBuilder sb) {
 428         if(!isLOGEnabled()) { return; }
 429
 430         sb.append("\nException: [" + error.toString().replace("\n", "\n  ") + "]");
 431         Throwable cause = error.getCause();
 432         if(cause != null) {
 433             sb.append("\nCauses:\n");
 434             while(cause != null) {
 435                 sb.append("  ");
 436                 sb.append("[" + cause.toString().replace("\n", "\n  ")  + "]");
 437                 sb.append("\n");
 438                 cause = cause.getCause();
 439             }
 440         }
 441         else {
 442             sb.append("\n");
 443         }
 444
 445         StackTraceElement[] stackTrace = error.getStackTrace();
 446         sb.append("Stack trace (" + stackTrace.length + " elements):\n");
 447         for(int i = 0; i < stackTrace.length; i++) {
 448             StackTraceElement errorElem = stackTrace[i];
 449             sb.append("  [" + i + "] ");
 450             sb.append(errorElem.toString());
 451             sb.append("\n");
 452         }
 453     }
 454
 455     public static void LOGError(Throwable error) {
 456         if(!isLOGEnabled()) { return; }
 457
 458         final StringBuilder sb = new StringBuilder();
 459         LOGError(error, sb);
 460         if(sb.length() > 0) {
 461             __ConsoleLog(sb.toString());
 462         }
 463     }
 464
 465     public static boolean isLOGEnabled() {
 466         return IsLOGEnabled;
 467     }
 468
 469     public static void LOG(Object ...args) {
 470         if(!isLOGEnabled()) { return; }
 471
 472         final StringBuilder sb = new StringBuilder();
 473         for(Object arg : args) {
 474             if(arg instanceof Throwable) {
 475                 LOGError((Throwable) arg, sb);
 476             }
 477             else {
 478                 sb.append(arg);
 479             }
 480         }
 481
 482         if(sb.length() > 0) {
 483             __ConsoleLog(sb.toString());
 484         }
 485     }
 486
 487     private void initialize() {
 488         userCatalogs.updateWithIDAndName("*", "All Pithos users");
 489
 490         lastModified = new Date(); //Initialize if-modified-since value with now.
 491         resources.pithosCss().ensureInjected();
 492         boolean bareContent = Window.Location.getParameter("noframe") != null;
 493         String contentWidth = bareContent ? Const.PERCENT_100 : Const.PERCENT_75;
 494
 495         VerticalPanel outer = new VerticalPanel();
 496         outer.setWidth(Const.PERCENT_100);
 497         if(!bareContent) {
 498             outer.addStyleName("pithos-outer");
 499         }
 500
 501         if(!bareContent) {
 502             topPanel = new TopPanel(this, Pithos.images);
 503             topPanel.setWidth(Const.PERCENT_100);
 504             outer.add(topPanel);
 505             outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 506         }
 507
 508         messagePanel.setVisible(false);
 509         outer.add(messagePanel);
 510         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 511         outer.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
 512
 513         HorizontalPanel header = new HorizontalPanel();
 514         header.addStyleName("pithos-header");
 515         header.setWidth(contentWidth);
 516         if(bareContent) {
 517             header.addStyleName("pithos-header-noframe");
 518         }
 519         upload = new Button("Upload", new ClickHandler() {
 520             @Override
 521             public void onClick(ClickEvent event) {
 522                 if(getSelection() != null) {
 523                     new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 524                 }
 525             }
 526         });
 527         upload.addStyleName("pithos-uploadButton");
 528         header.add(upload);
 529         header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 530         header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 531
 532         toolbar = new Toolbar(this);
 533         header.add(toolbar);
 534         header.setCellHorizontalAlignment(toolbar, HasHorizontalAlignment.ALIGN_CENTER);
 535         header.setCellVerticalAlignment(toolbar, HasVerticalAlignment.ALIGN_MIDDLE);
 536
 537         HorizontalPanel folderStatistics = new HorizontalPanel();
 538         folderStatistics.addStyleName("pithos-folderStatistics");
 539         numOfFiles = new HTML();
 540         folderStatistics.add(numOfFiles);
 541         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 542         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 543         folderStatistics.add(numOfFilesLabel);
 544         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 545         header.add(folderStatistics);
 546         header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 547         header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
 548         header.setCellWidth(folderStatistics, "40px");
 549         outer.add(header);
 550         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 551         // Inner contains the various lists
 552         inner.sinkEvents(Event.ONCONTEXTMENU);
 553         inner.setWidth(Const.PERCENT_100);
 554
 555         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 556         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 557             @Override
 558             public void onSelectionChange(SelectionChangeEvent event) {
 559                 if(folderTreeSelectionModel.getSelectedObject() != null) {
 560                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 561                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 562                     Folder f = folderTreeSelectionModel.getSelectedObject();
 563                     updateFolder(f, true, new Command() {
 564
 565                         @Override
 566                         public void execute() {
 567                             updateStatistics();
 568                         }
 569                     }, true);
 570                     showRelevantToolbarButtons();
 571                 }
 572                 else {
 573                     if(getSelectedTree().equals(folderTreeView)) {
 574                         setSelectedTree(null);
 575                     }
 576                     if(getSelectedTree() == null) {
 577                         showRelevantToolbarButtons();
 578                     }
 579                 }
 580             }
 581         });
 582         selectionModels.add(folderTreeSelectionModel);
 583
 584         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 585         folderTreeView = new FolderTreeView(folderTreeViewModel);
 586         treeViews.add(folderTreeView);
 587
 588         fileList = new FileList(this, images);
 589         inner.add(fileList);
 590
 591         trees = new VerticalPanel();
 592         trees.setWidth(Const.PERCENT_100);
 593
 594         // Add the left and right panels to the split panel.
 595         splitPanel.setLeftWidget(trees);
 596         FlowPanel right = new FlowPanel();
 597         right.getElement().setId("rightPanel");
 598         right.add(inner);
 599         splitPanel.setRightWidget(right);
 600         splitPanel.setSplitPosition("219px");
 601         splitPanel.setSize(Const.PERCENT_100, Const.PERCENT_100);
 602         splitPanel.addStyleName("pithos-splitPanel");
 603         splitPanel.setWidth(contentWidth);
 604         outer.add(splitPanel);
 605         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 606
 607         if(!bareContent) {
 608             statusPanel = new StatusPanel();
 609             statusPanel.setWidth(Const.PERCENT_100);
 610             outer.add(statusPanel);
 611             outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 612         }
 613         else {
 614             splitPanel.addStyleName("pithos-splitPanel-noframe");
 615         }
 616
 617         // Hook the window resize event, so that we can adjust the UI.
 618         Window.addResizeHandler(this);
 619         // Clear out the window's built-in margin, because we want to take
 620         // advantage of the entire client area.
 621         Window.setMargin("0px");
 622         // Finally, add the outer panel to the RootPanel, so that it will be
 623         // displayed.
 624         RootPanel.get().add(outer);
 625         // Call the window resized handler to get the initial sizes setup. Doing
 626         // this in a deferred command causes it to occur after all widgets'
 627         // sizes have been computed by the browser.
 628         Scheduler.get().scheduleIncremental(new RepeatingCommand() {
 629
 630             @Override
 631             public boolean execute() {
 632                 if(!isCloudbarReady()) {
 633                     return true;
 634                 }
 635                 onWindowResized(Window.getClientHeight());
 636                 return false;
 637             }
 638         });
 639
 640         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 641             @Override
 642             public void execute() {
 643                 LOG("Pithos::initialize() Calling Pithos::fetchAccount()");
 644                 fetchAccount(new Command() {
 645
 646                     @Override
 647                     public void execute() {
 648                         if(!account.hasHomeContainer()) {
 649                             createHomeContainer(account, this);
 650                         }
 651                         else if(!account.hasTrashContainer()) {
 652                             createTrashContainer(this);
 653                         }
 654                         else {
 655                             for(Folder f : account.getContainers()) {
 656                                 if(f.getName().equals(Const.TRASH_CONTAINER)) {
 657                                     trash = f;
 658                                     break;
 659                                 }
 660                             }
 661                             trees.add(folderTreeView);
 662                             folderTreeViewModel.initialize(account, new Command() {
 663
 664                                 @Override
 665                                 public void execute() {
 666                                     createMySharedTree();
 667                                 }
 668                             });
 669
 670                             HorizontalPanel separator = new HorizontalPanel();
 671                             separator.addStyleName("pithos-statisticsSeparator");
 672                             separator.add(new HTML(""));
 673                             trees.add(separator);
 674
 675                             groupTreeViewModel = new GroupTreeViewModel(Pithos.this);
 676                             groupTreeView = new GroupTreeView(groupTreeViewModel);
 677                             treeViews.add(groupTreeView);
 678                             trees.add(groupTreeView);
 679                             folderTreeView.showStatistics(account);
 680                         }
 681                     }
 682                 });
 683             }
 684         });
 685     }
 686
 687     public void scheduleResfresh() {
 688         Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
 689
 690             @Override
 691             public boolean execute() {
 692                 final Folder f = getSelection();
 693                 if(f == null) {
 694                     return true;
 695                 }
 696
 697                 HeadRequest<Folder> head = new HeadRequest<Folder>(Folder.class, getStorageAPIURL(), f.getOwnerID(), "/" + f.getContainer()) {
 698
 699                     @Override
 700                     public void onSuccess(Folder _result) {
 701                         lastModified = new Date();
 702                         if(getSelectedTree().equals(folderTreeView)) {
 703                             updateFolder(f, true, new Command() {
 704
 705                                 @Override
 706                                 public void execute() {
 707                                     scheduleResfresh();
 708                                 }
 709
 710                             }, false);
 711                         }
 712                         else if(getSelectedTree().equals(mysharedTreeView)) {
 713                             updateSharedFolder(f, true, new Command() {
 714
 715                                 @Override
 716                                 public void execute() {
 717                                     scheduleResfresh();
 718                                 }
 719                             });
 720                         }
 721                         else {
 722                             scheduleResfresh();
 723                         }
 724                     }
 725
 726                     @Override
 727                     public void onError(Throwable t) {
 728                         if(t instanceof RestException && ((RestException) t).getHttpStatusCode() == HttpStatus.SC_NOT_MODIFIED) {
 729                             scheduleResfresh();
 730                         }
 731                         else if(retries >= MAX_RETRIES) {
 732                             LOG("Error heading folder. ", t);
 733                             setError(t);
 734                             if(t instanceof RestException) {
 735                                 displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
 736                             }
 737                             else {
 738                                 displayError("System error heading folder: " + t.getMessage());
 739                             }
 740                         }
 741                         else {//retry
 742                             LOG("Retry ", retries);
 743                             Scheduler.get().scheduleDeferred(this);
 744                         }
 745                     }
 746
 747                     @Override
 748                     protected void onUnauthorized(Response response) {
 749                         if(retries >= MAX_RETRIES) {
 750                             sessionExpired();
 751                         }
 752                         else //retry
 753                         {
 754                             Scheduler.get().scheduleDeferred(this);
 755                         }
 756                     }
 757                 };
 758                 head.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 759                 head.setHeader(Const.IF_MODIFIED_SINCE, DateTimeFormat.getFormat(Const.DATE_FORMAT_1).format(lastModified, TimeZone.createTimeZone(0)) + " GMT");
 760                 Scheduler.get().scheduleDeferred(head);
 761
 762                 return false;
 763             }
 764         }, 3000);
 765     }
 766
 767     public void applyPermissions(Folder f) {
 768         if(f != null) {
 769             if(f.isInTrash()) {
 770                 upload.setEnabled(false);
 771                 disableUploadArea();
 772             }
 773             else {
 774                 Boolean[] perms = f.getPermissions().get(userID);
 775                 if(f.getOwnerID().equals(userID) || (perms != null && perms[1] != null && perms[1])) {
 776                     upload.setEnabled(true);
 777                     enableUploadArea();
 778                 }
 779                 else {
 780                     upload.setEnabled(false);
 781                     disableUploadArea();
 782                 }
 783             }
 784         }
 785         else {
 786             upload.setEnabled(false);
 787             disableUploadArea();
 788         }
 789     }
 790
 791     @SuppressWarnings({"rawtypes", "unchecked"})
 792     public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 793         selectedTree = _selectedTree;
 794
 795         for(SingleSelectionModel s : selectionModels) {
 796             if(!s.equals(model) && s.getSelectedObject() != null) {
 797                 s.setSelected(s.getSelectedObject(), false);
 798             }
 799         }
 800     }
 801
 802     public void showFiles(final Folder f) {
 803         Set<File> files = f.getFiles();
 804         showFiles(files);
 805     }
 806
 807     public void showFiles(Set<File> files) {
 808         fileList.setFiles(new ArrayList<File>(files));
 809     }
 810
 811     /**
 812      * Parse and store the user credentials to the appropriate fields.
 813      */
 814     private boolean parseUserCredentials() {
 815         final String cookie = otherProperties.get(Const.AUTH_COOKIE);
 816         String auth = Cookies.getCookie(cookie);
 817         if(auth == null) {
 818             authenticateUser();
 819             return false;
 820         }
 821         if(auth.startsWith("\"")) {
 822             auth = auth.substring(1);
 823         }
 824         if(auth.endsWith("\"")) {
 825             auth = auth.substring(0, auth.length() - 1);
 826         }
 827         String[] authSplit = auth.split("\\" + config.cookieSeparator(), 2);
 828         if(authSplit.length != 2) {
 829             authenticateUser();
 830             return false;
 831         }
 832         this.userID = authSplit[0];
 833         this.userToken = authSplit[1];
 834
 835         String gotoUrl = Window.Location.getParameter("goto");
 836         if(gotoUrl != null && gotoUrl.length() > 0) {
 837             Window.Location.assign(gotoUrl);
 838             return false;
 839         }
 840         return true;
 841     }
 842
 843     /**
 844      * Redirect the user to the login page for authentication.
 845      */
 846     protected void authenticateUser() {
 847         Dictionary otherProperties = Dictionary.getDictionary(Const.OTHER_PROPERTIES);
 848         Window.Location.assign(otherProperties.get(Const.LOGIN_URL) + Window.Location.getHref());
 849     }
 850
 851     public void fetchAccount(final Command callback) {
 852         String path = "?format=json";
 853
 854         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getStorageAPIURL(), userID, path) {
 855             @Override
 856             public void onSuccess(AccountResource accountResource) {
 857                 account = accountResource;
 858                 if(callback != null) {
 859                     callback.execute();
 860                 }
 861
 862                 final List<String> memberIDs = new ArrayList<String>();
 863                 final List<Group> groups = account.getGroups();
 864                 for(Group group : groups) {
 865                     memberIDs.addAll(group.getMemberIDs());
 866                 }
 867                 memberIDs.add(Pithos.this.getUserID());
 868
 869                 final List<String> theUnknown = Pithos.this.filterUserIDsWithUnknownDisplayName(memberIDs);
 870                 // Initialize the user catalog
 871                 new UpdateUserCatalogs(Pithos.this, theUnknown).scheduleDeferred();
 872                 LOG("Called new UpdateUserCatalogs(Pithos.this, theUnknown).scheduleDeferred();");
 873             }
 874
 875             @Override
 876             public void onError(Throwable t) {
 877                 LOG("Error getting account", t);
 878                 setError(t);
 879                 if(t instanceof RestException) {
 880                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 881                 }
 882                 else {
 883                     displayError("System error fetching user data: " + t.getMessage());
 884                 }
 885             }
 886
 887             @Override
 888             protected void onUnauthorized(Response response) {
 889                 sessionExpired();
 890             }
 891         };
 892         getAccount.setHeader(Const.X_AUTH_TOKEN, userToken);
 893         Scheduler.get().scheduleDeferred(getAccount);
 894     }
 895
 896     public void updateStatistics() {
 897         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getStorageAPIURL(), userID, "", account) {
 898
 899             @Override
 900             public void onSuccess(AccountResource _result) {
 901                 folderTreeView.showStatistics(account);
 902             }
 903
 904             @Override
 905             public void onError(Throwable t) {
 906                 LOG("Error getting account", t);
 907                 setError(t);
 908                 if(t instanceof RestException) {
 909                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 910                 }
 911                 else {
 912                     displayError("System error fetching user data: " + t.getMessage());
 913                 }
 914             }
 915
 916             @Override
 917             protected void onUnauthorized(Response response) {
 918                 sessionExpired();
 919             }
 920         };
 921         headAccount.setHeader(Const.X_AUTH_TOKEN, userToken);
 922         Scheduler.get().scheduleDeferred(headAccount);
 923     }
 924
 925     protected void createHomeContainer(final AccountResource _account, final Command callback) {
 926         String path = "/" + Const.HOME_CONTAINER;
 927         PutRequest createPithos = new PutRequest(getStorageAPIURL(), getUserID(), path) {
 928             @Override
 929             public void onSuccess(Resource result) {
 930                 if(!_account.hasTrashContainer()) {
 931                     createTrashContainer(callback);
 932                 }
 933                 else {
 934                     fetchAccount(callback);
 935                 }
 936             }
 937
 938             @Override
 939             public void onError(Throwable t) {
 940                 LOG("Error creating pithos", t);
 941                 setError(t);
 942                 if(t instanceof RestException) {
 943                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 944                 }
 945                 else {
 946                     displayError("System error Error creating pithos: " + t.getMessage());
 947                 }
 948             }
 949
 950             @Override
 951             protected void onUnauthorized(Response response) {
 952                 sessionExpired();
 953             }
 954         };
 955         createPithos.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 956         Scheduler.get().scheduleDeferred(createPithos);
 957     }
 958
 959     protected void createTrashContainer(final Command callback) {
 960         String path = "/" + Const.TRASH_CONTAINER;
 961         PutRequest createPithos = new PutRequest(getStorageAPIURL(), getUserID(), path) {
 962             @Override
 963             public void onSuccess(Resource result) {
 964                 fetchAccount(callback);
 965             }
 966
 967             @Override
 968             public void onError(Throwable t) {
 969                 LOG("Error creating pithos", t);
 970                 setError(t);
 971                 if(t instanceof RestException) {
 972                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 973                 }
 974                 else {
 975                     displayError("System error Error creating pithos: " + t.getMessage());
 976                 }
 977             }
 978
 979             @Override
 980             protected void onUnauthorized(Response response) {
 981                 sessionExpired();
 982             }
 983         };
 984         createPithos.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 985         Scheduler.get().scheduleDeferred(createPithos);
 986     }
 987
 988     /**
 989      * Creates an HTML fragment that places an image & caption together, for use
 990      * in a group header.
 991      *
 992      * @param imageProto an image prototype for an image
 993      * @param caption    the group caption
 994      * @return the header HTML fragment
 995      */
 996     private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 997         String captionHTML = "<table class='caption' cellpadding='0' "
 998             + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 999             + "</td><td id =" + caption + " class='rcaption'><b style='white-space:nowrap'>&nbsp;"
1000             + caption + "</b></td></tr></table>";
1001         return captionHTML;
1002     }
1003
1004     protected void onWindowResized(int height) {
1005         // Adjust the split panel to take up the available room in the window.
1006         int newHeight = height - splitPanel.getAbsoluteTop() - 153;
1007         if(newHeight < 1) {
1008             newHeight = 1;
1009         }
1010         splitPanel.setHeight("" + newHeight);
1011         inner.setHeight("" + newHeight);
1012     }
1013
1014     native boolean isCloudbarReady()/*-{
1015       if ($wnd.$("div.cloudbar") && $wnd.$("div.cloudbar").height() > 0)
1016         return true;
1017       return false;
1018     }-*/;
1019
1020     @Override
1021     public void onResize(ResizeEvent event) {
1022         int height = event.getHeight();
1023         onWindowResized(height);
1024     }
1025
1026     /**
1027      * Display an error message.
1028      *
1029      * @param msg the message to display
1030      */
1031     public void displayError(String msg) {
1032         messagePanel.displayError(msg);
1033         onWindowResized(Window.getClientHeight());
1034     }
1035
1036     /**
1037      * Display a warning message.
1038      *
1039      * @param msg the message to display
1040      */
1041     public void displayWarning(String msg) {
1042         messagePanel.displayWarning(msg);
1043         onWindowResized(Window.getClientHeight());
1044     }
1045
1046     /**
1047      * Display an informational message.
1048      *
1049      * @param msg the message to display
1050      */
1051     public void displayInformation(String msg) {
1052         messagePanel.displayInformation(msg);
1053         onWindowResized(Window.getClientHeight());
1054     }
1055
1056     /**
1057      * Retrieve the fileList.
1058      *
1059      * @return the fileList
1060      */
1061     public FileList getFileList() {
1062         return fileList;
1063     }
1064
1065     /**
1066      * Retrieve the topPanel.
1067      *
1068      * @return the topPanel
1069      */
1070     TopPanel getTopPanel() {
1071         return topPanel;
1072     }
1073
1074     /**
1075      * Retrieve the clipboard.
1076      *
1077      * @return the clipboard
1078      */
1079     public Clipboard getClipboard() {
1080         return clipboard;
1081     }
1082
1083     public StatusPanel getStatusPanel() {
1084         return statusPanel;
1085     }
1086
1087     public String getUserToken() {
1088         return userToken;
1089     }
1090
1091     public static native void preventIESelection() /*-{
1092       $doc.body.onselectstart = function () {
1093         return false;
1094       };
1095     }-*/;
1096
1097     public static native void enableIESelection() /*-{
1098       if ($doc.body.onselectstart != null)
1099         $doc.body.onselectstart = null;
1100     }-*/;
1101
1102     public static String getStorageAPIURL() {
1103         return STORAGE_API_URL;
1104     }
1105
1106     public static String getStorageViewURL() {
1107         return STORAGE_VIEW_URL;
1108     }
1109
1110     public static String getUserCatalogsURL() {
1111         return USER_CATALOGS_API_URL;
1112     }
1113
1114     public static String getFileViewURL(File file) {
1115         return Pithos.getStorageViewURL() + file.getOwnerID() + file.getUri();
1116     }
1117
1118     /**
1119      * History support for folder navigation
1120      * adds a new browser history entry
1121      *
1122      * @param key
1123      */
1124     public void updateHistory(String key) {
1125 //              Replace any whitespace of the initial string to "+"
1126 //              String result = key.replaceAll("\\s","+");
1127 //              Add a new browser history entry.
1128 //              History.newItem(result);
1129         History.newItem(key);
1130     }
1131
1132     public void deleteFolder(final Folder folder, final Command callback) {
1133         final PleaseWaitPopup pwp = new PleaseWaitPopup();
1134         pwp.center();
1135         String path = "/" + folder.getContainer() + "/" + folder.getPrefix() + "?delimiter=/" + "&t=" + System.currentTimeMillis();
1136         DeleteRequest deleteFolder = new DeleteRequest(getStorageAPIURL(), folder.getOwnerID(), path) {
1137
1138             @Override
1139             protected void onUnauthorized(Response response) {
1140                 pwp.hide();
1141                 sessionExpired();
1142             }
1143
1144             @Override
1145             public void onSuccess(Resource result) {
1146                 updateFolder(folder.getParent(), true, new Command() {
1147
1148                     @Override
1149                     public void execute() {
1150                         folderTreeSelectionModel.setSelected(folder.getParent(), true);
1151                         updateStatistics();
1152                         if(callback != null) {
1153                             callback.execute();
1154                         }
1155                         pwp.hide();
1156                     }
1157                 }, true);
1158             }
1159
1160             @Override
1161             public void onError(Throwable t) {
1162                 LOG(t);
1163                 setError(t);
1164                 if(t instanceof RestException) {
1165                     if(((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND) {
1166                         displayError("Unable to delete folder: " + ((RestException) t).getHttpStatusText());
1167                     }
1168                     else {
1169                         onSuccess(null);
1170                     }
1171                 }
1172                 else {
1173                     displayError("System error unable to delete folder: " + t.getMessage());
1174                 }
1175                 pwp.hide();
1176             }
1177         };
1178         deleteFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1179         Scheduler.get().scheduleDeferred(deleteFolder);
1180     }
1181
1182     public FolderTreeView getFolderTreeView() {
1183         return folderTreeView;
1184     }
1185
1186     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
1187         if(iter.hasNext()) {
1188             File file = iter.next();
1189             String path = targetUri + "/" + file.getName();
1190             PutRequest copyFile = new PutRequest(getStorageAPIURL(), targetUsername, path) {
1191                 @Override
1192                 public void onSuccess(Resource result) {
1193                     copyFiles(iter, targetUsername, targetUri, callback);
1194                 }
1195
1196                 @Override
1197                 public void onError(Throwable t) {
1198                     LOG(t);
1199                     setError(t);
1200                     if(t instanceof RestException) {
1201                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
1202                     }
1203                     else {
1204                         displayError("System error unable to copy file: " + t.getMessage());
1205                     }
1206                 }
1207
1208                 @Override
1209                 protected void onUnauthorized(Response response) {
1210                     sessionExpired();
1211                 }
1212             };
1213             copyFile.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1214             copyFile.setHeader(Const.X_COPY_FROM, URL.encodePathSegment(file.getUri()));
1215             if(!file.getOwnerID().equals(targetUsername)) {
1216                 copyFile.setHeader(Const.X_SOURCE_ACCOUNT, URL.encodePathSegment(file.getOwnerID()));
1217             }
1218             copyFile.setHeader(Const.CONTENT_TYPE, file.getContentType());
1219             Scheduler.get().scheduleDeferred(copyFile);
1220         }
1221         else if(callback != null) {
1222             callback.execute();
1223         }
1224     }
1225
1226     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, boolean move, final Command callback) {
1227         String path = targetUri + "?delimiter=/";
1228         PutRequest copyFolder = new PutRequest(getStorageAPIURL(), targetUsername, path) {
1229             @Override
1230             public void onSuccess(Resource result) {
1231                 if(callback != null) {
1232                     callback.execute();
1233                 }
1234             }
1235
1236             @Override
1237             public void onError(Throwable t) {
1238                 LOG(t);
1239                 setError(t);
1240                 if(t instanceof RestException) {
1241                     displayError("Unable to copy folder: " + ((RestException) t).getHttpStatusText());
1242                 }
1243                 else {
1244                     displayError("System error copying folder: " + t.getMessage());
1245                 }
1246             }
1247
1248             @Override
1249             protected void onUnauthorized(Response response) {
1250                 sessionExpired();
1251             }
1252         };
1253         copyFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1254         copyFolder.setHeader(Const.ACCEPT, "*/*");
1255         copyFolder.setHeader(Const.CONTENT_LENGTH, "0");
1256         copyFolder.setHeader(Const.CONTENT_TYPE, "application/directory");
1257         if(!f.getOwnerID().equals(targetUsername)) {
1258             copyFolder.setHeader(Const.X_SOURCE_ACCOUNT, f.getOwnerID());
1259         }
1260         if(move) {
1261             copyFolder.setHeader(Const.X_MOVE_FROM, URL.encodePathSegment(f.getUri()));
1262         }
1263         else {
1264             copyFolder.setHeader(Const.X_COPY_FROM, URL.encodePathSegment(f.getUri()));
1265         }
1266         Scheduler.get().scheduleDeferred(copyFolder);
1267     }
1268
1269     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1270         selectionModels.add(model);
1271     }
1272
1273     public OtherSharedTreeView getOtherSharedTreeView() {
1274         return otherSharedTreeView;
1275     }
1276
1277     public void updateTrash(boolean showFiles, Command callback) {
1278         updateFolder(trash, showFiles, callback, true);
1279     }
1280
1281     public void updateGroupsNode() {
1282         groupTreeView.updateGroupNode(null);
1283     }
1284
1285     public Group addGroup(String groupname) {
1286         Group newGroup = new Group(groupname);
1287         account.addGroup(newGroup);
1288         groupTreeView.updateGroupNode(null);
1289         return newGroup;
1290     }
1291
1292     public void removeGroup(Group group) {
1293         account.removeGroup(group);
1294         updateGroupsNode();
1295     }
1296
1297     public TreeView getSelectedTree() {
1298         return selectedTree;
1299     }
1300
1301     public void setSelectedTree(TreeView selected) {
1302         selectedTree = selected;
1303     }
1304
1305     public Folder getSelection() {
1306         if(selectedTree != null) {
1307             return selectedTree.getSelection();
1308         }
1309         return null;
1310     }
1311
1312     public void showFolderStatistics(int folderFileCount) {
1313         numOfFiles.setHTML(String.valueOf(folderFileCount));
1314     }
1315
1316     public GroupTreeView getGroupTreeView() {
1317         return groupTreeView;
1318     }
1319
1320     public void sessionExpired() {
1321         new SessionExpiredDialog(this).center();
1322     }
1323
1324     public void updateRootFolder(Command callback) {
1325         updateFolder(account.getPithos(), false, callback, true);
1326     }
1327
1328     void createMySharedTree() {
1329         LOG("Pithos::createMySharedTree()");
1330         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1331         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1332             @Override
1333             public void onSelectionChange(SelectionChangeEvent event) {
1334                 if(mysharedTreeSelectionModel.getSelectedObject() != null) {
1335                     deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1336                     upload.setEnabled(false);
1337                     disableUploadArea();
1338                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1339                     showRelevantToolbarButtons();
1340                 }
1341                 else {
1342                     if(getSelectedTree().equals(mysharedTreeView)) {
1343                         setSelectedTree(null);
1344                     }
1345                     if(getSelectedTree() == null) {
1346                         showRelevantToolbarButtons();
1347                     }
1348                 }
1349             }
1350         });
1351         selectionModels.add(mysharedTreeSelectionModel);
1352         mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1353         mysharedTreeViewModel.initialize(new Command() {
1354
1355             @Override
1356             public void execute() {
1357                 mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1358                 trees.insert(mysharedTreeView, 2);
1359                 treeViews.add(mysharedTreeView);
1360                 createOtherSharedTree();
1361             }
1362         });
1363     }
1364
1365     void createOtherSharedTree() {
1366         LOG("Pithos::createOtherSharedTree()");
1367         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1368         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1369             @Override
1370             public void onSelectionChange(SelectionChangeEvent event) {
1371                 if(otherSharedTreeSelectionModel.getSelectedObject() != null) {
1372                     deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1373                     applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1374                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true, null);
1375                     showRelevantToolbarButtons();
1376                 }
1377                 else {
1378                     if(getSelectedTree().equals(otherSharedTreeView)) {
1379                         setSelectedTree(null);
1380                     }
1381                     if(getSelectedTree() == null) {
1382                         showRelevantToolbarButtons();
1383                     }
1384                 }
1385             }
1386         });
1387         selectionModels.add(otherSharedTreeSelectionModel);
1388         otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1389         // #3784 We show it empty...
1390         otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel, true);
1391         trees.insert(otherSharedTreeView, 1);
1392
1393         LOG("Pithos::createOtherSharedTree(), initializing otherSharedTreeViewModel with a callback");
1394         otherSharedTreeViewModel.initialize(new Command() {
1395             @Override
1396             public void execute() {
1397                 // #3784 ... then remove the empty stuff and add a new view with the populated model
1398                 trees.remove(otherSharedTreeView);
1399
1400                 otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel, false);
1401                 trees.insert(otherSharedTreeView, 1);
1402                 treeViews.add(otherSharedTreeView);
1403                 scheduleResfresh();
1404             }
1405         });
1406     }
1407
1408     public String getErrorData() {
1409         final StringBuilder sb = new StringBuilder();
1410         final String NL = Const.NL;
1411         Throwable t = this.error;
1412         while(t != null) {
1413             sb.append(t.toString());
1414             sb.append(NL);
1415             StackTraceElement[] traces = t.getStackTrace();
1416             for(StackTraceElement trace : traces) {
1417                 sb.append("  [");
1418                 sb.append(trace.getClassName());
1419                 sb.append("::");
1420                 sb.append(trace.getMethodName());
1421                 sb.append("() at ");
1422                 sb.append(trace.getFileName());
1423                 sb.append(":");
1424                 sb.append(trace.getLineNumber());
1425                 sb.append("]");
1426                 sb.append(NL);
1427             }
1428             t = t.getCause();
1429         }
1430
1431         return sb.toString();
1432     }
1433
1434     public void setError(Throwable t) {
1435         error = t;
1436         LOG(t);
1437     }
1438
1439     public void showRelevantToolbarButtons() {
1440         toolbar.showRelevantButtons();
1441     }
1442
1443     public FileUploadDialog getFileUploadDialog() {
1444         if(fileUploadDialog == null) {
1445             fileUploadDialog = new FileUploadDialog(this);
1446         }
1447         return fileUploadDialog;
1448     }
1449
1450     public void hideUploadIndicator() {
1451         upload.removeStyleName("pithos-uploadButton-loading");
1452         upload.setTitle("");
1453     }
1454
1455     public void showUploadIndicator() {
1456         upload.addStyleName("pithos-uploadButton-loading");
1457         upload.setTitle("Upload in progress. Click for details.");
1458     }
1459
1460     public void scheduleFolderHeadCommand(final Folder folder, final Command callback) {
1461         if(folder == null) {
1462             if(callback != null) {
1463                 callback.execute();
1464             }
1465         }
1466         else {
1467             HeadRequest<Folder> headFolder = new HeadRequest<Folder>(Folder.class, getStorageAPIURL(), folder.getOwnerID(), folder.getUri(), folder) {
1468
1469                 @Override
1470                 public void onSuccess(Folder _result) {
1471                     if(callback != null) {
1472                         callback.execute();
1473                     }
1474                 }
1475
1476                 @Override
1477                 public void onError(Throwable t) {
1478                     if(t instanceof RestException) {
1479                         if(((RestException) t).getHttpStatusCode() == Response.SC_NOT_FOUND) {
1480                             final String path = folder.getUri();
1481                             PutRequest newFolder = new PutRequest(getStorageAPIURL(), folder.getOwnerID(), path) {
1482                                 @Override
1483                                 public void onSuccess(Resource _result) {
1484                                     scheduleFolderHeadCommand(folder, callback);
1485                                 }
1486
1487                                 @Override
1488                                 public void onError(Throwable _t) {
1489                                     setError(_t);
1490                                     if(_t instanceof RestException) {
1491                                         displayError("Unable to create folder: " + ((RestException) _t).getHttpStatusText());
1492                                     }
1493                                     else {
1494                                         displayError("System error creating folder: " + _t.getMessage());
1495                                     }
1496                                 }
1497
1498                                 @Override
1499                                 protected void onUnauthorized(Response response) {
1500                                     sessionExpired();
1501                                 }
1502                             };
1503                             newFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1504                             newFolder.setHeader(Const.CONTENT_TYPE, "application/folder");
1505                             newFolder.setHeader(Const.ACCEPT, "*/*");
1506                             newFolder.setHeader(Const.CONTENT_LENGTH, "0");
1507                             Scheduler.get().scheduleDeferred(newFolder);
1508                         }
1509                         else if(((RestException) t).getHttpStatusCode() == Response.SC_FORBIDDEN) {
1510                             onSuccess(folder);
1511                         }
1512                         else {
1513                             displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
1514                         }
1515                     }
1516                     else {
1517                         displayError("System error heading folder: " + t.getMessage());
1518                     }
1519
1520                     LOG("Error heading folder", t);
1521                     setError(t);
1522                 }
1523
1524                 @Override
1525                 protected void onUnauthorized(Response response) {
1526                     sessionExpired();
1527                 }
1528             };
1529             headFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1530             Scheduler.get().scheduleDeferred(headFolder);
1531         }
1532     }
1533
1534     public void scheduleFileHeadCommand(File f, final Command callback) {
1535         HeadRequest<File> headFile = new HeadRequest<File>(File.class, getStorageAPIURL(), f.getOwnerID(), f.getUri(), f) {
1536
1537             @Override
1538             public void onSuccess(File _result) {
1539                 if(callback != null) {
1540                     callback.execute();
1541                 }
1542             }
1543
1544             @Override
1545             public void onError(Throwable t) {
1546                 LOG("Error heading file", t);
1547                 setError(t);
1548                 if(t instanceof RestException) {
1549                     displayError("Error heading file: " + ((RestException) t).getHttpStatusText());
1550                 }
1551                 else {
1552                     displayError("System error heading file: " + t.getMessage());
1553                 }
1554             }
1555
1556             @Override
1557             protected void onUnauthorized(Response response) {
1558                 sessionExpired();
1559             }
1560         };
1561         headFile.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1562         Scheduler.get().scheduleDeferred(headFile);
1563     }
1564
1565     public boolean isMySharedSelected() {
1566         return getSelectedTree().equals(getMySharedTreeView());
1567     }
1568
1569     private Folder getUploadFolder() {
1570         if(folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1571             return getSelection();
1572         }
1573         return null;
1574     }
1575
1576     private void updateUploadFolder() {
1577         updateUploadFolder(null);
1578     }
1579
1580     private void updateUploadFolder(final JsArrayString urls) {
1581         if(folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1582             Folder f = getSelection();
1583             if(getSelectedTree().equals(getFolderTreeView())) {
1584                 updateFolder(f, true, new Command() {
1585
1586                     @Override
1587                     public void execute() {
1588                         updateStatistics();
1589                         if(urls != null) {
1590                             selectUploadedFiles(urls);
1591                         }
1592                     }
1593                 }, false);
1594             }
1595             else {
1596                 updateOtherSharedFolder(f, true, null);
1597             }
1598         }
1599     }
1600
1601     public native void disableUploadArea() /*-{
1602       var uploader = $wnd.$("#uploader").pluploadQueue();
1603       var dropElm = $wnd.document.getElementById('rightPanel');
1604       $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1605     }-*/;
1606
1607     public native void enableUploadArea() /*-{
1608       var uploader = $wnd.$("#uploader").pluploadQueue();
1609       var dropElm = $wnd.document.getElementById('rightPanel');
1610       $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1611       if (uploader.runtime == 'html5') {
1612         uploader.settings.drop_element = 'rightPanel';
1613         uploader.trigger('PostInit');
1614       }
1615     }-*/;
1616
1617     public void showUploadAlert(int nOfFiles) {
1618         if(uploadAlert == null) {
1619             uploadAlert = new UploadAlert(this, nOfFiles);
1620         }
1621         if(!uploadAlert.isShowing()) {
1622             uploadAlert.setPopupPositionAndShow(new PopupPanel.PositionCallback() {
1623
1624                 @Override
1625                 public void setPosition(int offsetWidth, int offsetHeight) {
1626                     uploadAlert.setPopupPosition((Window.getClientWidth() - offsetWidth) / 2, statusPanel.getAbsoluteTop() - offsetHeight);
1627                 }
1628             });
1629         }
1630         uploadAlert.setNumOfFiles(nOfFiles);
1631     }
1632
1633     public void hideUploadAlert() {
1634         if(uploadAlert != null && uploadAlert.isShowing()) {
1635             uploadAlert.hide();
1636         }
1637     }
1638
1639     public void selectUploadedFiles(JsArrayString urls) {
1640         List<String> selectedUrls = new ArrayList<String>();
1641         for(int i = 0; i < urls.length(); i++) {
1642             selectedUrls.add(urls.get(i));
1643         }
1644         fileList.selectByUrl(selectedUrls);
1645     }
1646
1647     public void purgeContainer(final Folder container) {
1648         String path = "/" + container.getName() + "?delimiter=/";
1649         DeleteRequest delete = new DeleteRequest(getStorageAPIURL(), getUserID(), path) {
1650
1651             @Override
1652             protected void onUnauthorized(Response response) {
1653                 sessionExpired();
1654             }
1655
1656             @Override
1657             public void onSuccess(Resource result) {
1658                 updateFolder(container, true, null, true);
1659             }
1660
1661             @Override
1662             public void onError(Throwable t) {
1663                 LOG("Error deleting trash", t);
1664                 setError(t);
1665                 if(t instanceof RestException) {
1666                     displayError("Error deleting trash: " + ((RestException) t).getHttpStatusText());
1667                 }
1668                 else {
1669                     displayError("System error deleting trash: " + t.getMessage());
1670                 }
1671             }
1672         };
1673         delete.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1674         Scheduler.get().scheduleDeferred(delete);
1675     }
1676 }