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     private static final boolean EnableScheduledRefresh = true; // Make false only for debugging purposes.
  85
  86     public static final Set<String> HTTPHeadersToIgnoreInLOG = new HashSet<String>();
  87     static {
  88         HTTPHeadersToIgnoreInLOG.add(Const.HTTP_HEADER_CONNECTION);
  89         HTTPHeadersToIgnoreInLOG.add(Const.HTTP_HEADER_DATE);
  90         HTTPHeadersToIgnoreInLOG.add(Const.HTTP_HEADER_KEEP_ALIVE);
  91         HTTPHeadersToIgnoreInLOG.add(Const.HTTP_HEADER_SERVER);
  92         HTTPHeadersToIgnoreInLOG.add(Const.HTTP_HEADER_VARY);
  93         HTTPHeadersToIgnoreInLOG.add(Const.IF_MODIFIED_SINCE);
  94     }
  95
  96     public static final Configuration config = GWT.create(Configuration.class);
  97     public static final String CONFIG_API_PATH = config.apiPath();
  98     static {
  99         LOG("CONFIG_API_PATH = ", CONFIG_API_PATH);
 100     }
 101
 102     public static final Dictionary otherProperties = Dictionary.getDictionary(Const.OTHER_PROPERTIES);
 103     public static String getFromOtherPropertiesOrDefault(String key, String def) {
 104         try {
 105             final String value = otherProperties.get(key);
 106             return value == null ? def : value;
 107         }
 108         catch(Exception e) {
 109             return def;
 110         }
 111     }
 112
 113     public static String getFromOtherPropertiesOrNull(String key) {
 114         return getFromOtherPropertiesOrDefault(key, null);
 115     }
 116
 117     private static final boolean SHOW_COPYRIGHT;
 118     static {
 119         final String valueStr = getFromOtherPropertiesOrDefault("SHOW_COPYRIGHT", "true").trim().toLowerCase();
 120         SHOW_COPYRIGHT = "true".equals(valueStr);
 121         LOG("SHOW_COPYRIGHT = '", valueStr, "' ==> ", SHOW_COPYRIGHT);
 122     }
 123
 124     public static final String OTHERPROPS_STORAGE_API_URL = getFromOtherPropertiesOrNull("STORAGE_API_URL");
 125     public static final String OTHERPROPS_USER_CATALOGS_API_URL = getFromOtherPropertiesOrNull("USER_CATALOGS_API_URL");
 126     static {
 127         LOG("STORAGE_API_URL = ", OTHERPROPS_STORAGE_API_URL);
 128         LOG("USER_CATALOGS_API_URL = ", OTHERPROPS_USER_CATALOGS_API_URL);
 129     }
 130
 131     public static final String STORAGE_API_URL;
 132     static {
 133         if(OTHERPROPS_STORAGE_API_URL != null) {
 134             STORAGE_API_URL = OTHERPROPS_STORAGE_API_URL;
 135         }
 136         else if(CONFIG_API_PATH != null) {
 137             STORAGE_API_URL = CONFIG_API_PATH;
 138         }
 139         else {
 140             throw new RuntimeException("Unknown STORAGE_API_URL");
 141         }
 142
 143         LOG("Computed STORAGE_API_URL = ", STORAGE_API_URL);
 144     }
 145
 146     public static final String STORAGE_VIEW_URL;
 147     static {
 148         final String viewURL = getFromOtherPropertiesOrNull("STORAGE_VIEW_URL");
 149         if(viewURL != null) {
 150             STORAGE_VIEW_URL = viewURL;
 151         }
 152         else {
 153             STORAGE_VIEW_URL = STORAGE_API_URL;
 154         }
 155
 156         LOG("Computed STORAGE_VIEW_URL = ", STORAGE_VIEW_URL);
 157     }
 158
 159     public static final String PUBLIC_LINK_VIEW_PREFIX = getFromOtherPropertiesOrDefault("PUBLIC_LINK_VIEW_PREFIX", "");
 160
 161     public static final String USER_CATALOGS_API_URL;
 162     static {
 163         if(OTHERPROPS_USER_CATALOGS_API_URL != null) {
 164             USER_CATALOGS_API_URL = OTHERPROPS_USER_CATALOGS_API_URL;
 165         }
 166         else if(OTHERPROPS_STORAGE_API_URL != null) {
 167             throw new RuntimeException("STORAGE_API_URL is defined but USER_CATALOGS_API_URL is not");
 168         }
 169         else {
 170             // https://server.com/v1/ --> https://server.com
 171             String url = CONFIG_API_PATH;
 172             url = Helpers.stripTrailing(url, "/");
 173             url = Helpers.upToIncludingLastPart(url, "/");
 174             url = Helpers.stripTrailing(url, "/");
 175             url = url + "/user_catalogs";
 176
 177             USER_CATALOGS_API_URL = url;
 178
 179             LOG("Computed USER_CATALOGS_API_URL = ", USER_CATALOGS_API_URL);
 180         }
 181     }
 182
 183     public interface Style extends CssResource {
 184         String commandAnchor();
 185
 186         String statistics();
 187
 188         @ClassName("gwt-HTML")
 189         String html();
 190
 191         String uploadAlert();
 192
 193         String uploadAlertLink();
 194
 195         String uploadAlertProgress();
 196
 197         String uploadAlertPercent();
 198
 199         String uploadAlertClose();
 200     }
 201
 202     public interface Resources extends ClientBundle {
 203         @Source("Pithos.css")
 204         Style pithosCss();
 205
 206         @Source("gr/grnet/pithos/resources/close-popup.png")
 207         ImageResource closePopup();
 208     }
 209
 210     public static Resources resources = GWT.create(Resources.class);
 211
 212     /**
 213      * Instantiate an application-level image bundle. This object will provide
 214      * programmatic access to all the images needed by widgets.
 215      */
 216     static Images images = (Images) GWT.create(Images.class);
 217
 218     public String getUserID() {
 219         return userID;
 220     }
 221
 222     public UserCatalogs getUserCatalogs() {
 223         return userCatalogs;
 224     }
 225
 226     public String getCurrentUserDisplayNameOrID() {
 227         final String displayName = userCatalogs.getDisplayName(getUserID());
 228         return displayName == null ? getUserID() : displayName;
 229     }
 230
 231     public boolean hasDisplayNameForUserID(String userID) {
 232         return userCatalogs.getDisplayName(userID) != null;
 233     }
 234
 235     public boolean hasIDForUserDisplayName(String userDisplayName) {
 236         return userCatalogs.getID(userDisplayName) != null;
 237     }
 238
 239     public String getDisplayNameForUserID(String userID) {
 240         return userCatalogs.getDisplayName(userID);
 241     }
 242
 243     public String getIDForUserDisplayName(String userDisplayName) {
 244         return userCatalogs.getID(userDisplayName);
 245     }
 246
 247     public List<String> getDisplayNamesForUserIDs(List<String> userIDs) {
 248         if(userIDs == null) {
 249             userIDs = new ArrayList<String>();
 250         }
 251         final List<String> userDisplayNames = new ArrayList<String>();
 252         for(String userID : userIDs) {
 253             final String displayName = getDisplayNameForUserID(userID);
 254             userDisplayNames.add(displayName);
 255         }
 256
 257         return userDisplayNames;
 258     }
 259
 260     public List<String> filterUserIDsWithUnknownDisplayName(Collection<String> userIDs) {
 261         if(userIDs == null) {
 262             userIDs = new ArrayList<String>();
 263         }
 264         final List<String> filtered = new ArrayList<String>();
 265         for(String userID : userIDs) {
 266             if(!this.userCatalogs.hasID(userID)) {
 267                 filtered.add(userID);
 268             }
 269         }
 270         return filtered;
 271     }
 272
 273     public void setAccount(AccountResource acct) {
 274         account = acct;
 275     }
 276
 277     public AccountResource getAccount() {
 278         return account;
 279     }
 280
 281     public void updateFolder(Folder f, boolean showfiles, Command callback, final boolean openParent) {
 282         folderTreeView.updateFolder(f, showfiles, callback, openParent);
 283     }
 284
 285     public void updateGroupNode(Group group) {
 286         groupTreeView.updateGroupNode(group);
 287     }
 288
 289     public void updateMySharedRoot() {
 290         mysharedTreeView.updateRoot();
 291     }
 292
 293     public void updateSharedFolder(Folder f, boolean showfiles, Command callback) {
 294         mysharedTreeView.updateFolder(f, showfiles, callback);
 295     }
 296
 297     public void updateSharedFolder(Folder f, boolean showfiles) {
 298         updateSharedFolder(f, showfiles, null);
 299     }
 300
 301     public void updateOtherSharedFolder(Folder f, boolean showfiles, Command callback) {
 302         otherSharedTreeView.updateFolder(f, showfiles, callback);
 303     }
 304
 305     public MysharedTreeView getMySharedTreeView() {
 306         return mysharedTreeView;
 307     }
 308
 309     /**
 310      * An aggregate image bundle that pulls together all the images for this
 311      * application into a single bundle.
 312      */
 313     public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 314
 315         @Source("gr/grnet/pithos/resources/document.png")
 316         ImageResource folders();
 317
 318         @Source("gr/grnet/pithos/resources/advancedsettings.png")
 319         @ImageOptions(width = 32, height = 32)
 320         ImageResource tools();
 321     }
 322
 323     private Throwable error;
 324
 325     /**
 326      * The Application Clipboard implementation;
 327      */
 328     private Clipboard clipboard = new Clipboard();
 329
 330     /**
 331      * The top panel that contains the menu bar.
 332      */
 333     private TopPanel topPanel;
 334
 335     /**
 336      * The panel that contains the various system messages.
 337      */
 338     private MessagePanel messagePanel = new MessagePanel(this, Pithos.images);
 339
 340     /**
 341      * The bottom panel that contains the status bar.
 342      */
 343     StatusPanel statusPanel = null;
 344
 345     /**
 346      * The file list widget.
 347      */
 348     private FileList fileList;
 349
 350     /**
 351      * The tab panel that occupies the right side of the screen.
 352      */
 353     private VerticalPanel inner = new VerticalPanel();
 354
 355
 356     /**
 357      * The split panel that will contain the left and right panels.
 358      */
 359     private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 360
 361     /**
 362      * The currently selected item in the application, for use by the Edit menu
 363      * commands. Potential types are Folder, File, User and Group.
 364      */
 365     private Object currentSelection;
 366
 367     public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 368
 369     /**
 370      * The ID that uniquely identifies the user in Pithos+.
 371      * Currently this is a UUID. It used to be the user's email.
 372      */
 373     private String userID = null;
 374
 375     /**
 376      * Holds mappings from user UUIDs to emails and vice-versa.
 377      */
 378     private UserCatalogs userCatalogs = new UserCatalogs();
 379
 380     /**
 381      * The authentication token of the current user.
 382      */
 383     private String userToken;
 384
 385     VerticalPanel trees;
 386
 387     SingleSelectionModel<Folder> folderTreeSelectionModel;
 388     FolderTreeViewModel folderTreeViewModel;
 389     FolderTreeView folderTreeView;
 390
 391     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 392     MysharedTreeViewModel mysharedTreeViewModel;
 393     MysharedTreeView mysharedTreeView = null;
 394
 395     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 396     OtherSharedTreeViewModel otherSharedTreeViewModel;
 397     OtherSharedTreeView otherSharedTreeView = null;
 398
 399     GroupTreeViewModel groupTreeViewModel;
 400     GroupTreeView groupTreeView;
 401
 402     TreeView selectedTree;
 403     protected AccountResource account;
 404
 405     Folder trash;
 406
 407     List<Composite> treeViews = new ArrayList<Composite>();
 408
 409     @SuppressWarnings("rawtypes")
 410     List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 411
 412     public Button upload;
 413
 414     private HTML numOfFiles;
 415
 416     private Toolbar toolbar;
 417
 418     private FileUploadDialog fileUploadDialog = new FileUploadDialog(this);
 419
 420     UploadAlert uploadAlert;
 421
 422     Date lastModified;
 423
 424     @Override
 425     public void onModuleLoad() {
 426         if(parseUserCredentials()) {
 427             initialize();
 428         }
 429     }
 430
 431     static native void __ConsoleLog(String message) /*-{
 432       try { console.log(message); } catch (e) {}
 433     }-*/;
 434
 435     public static void LOGError(Throwable error, StringBuilder sb) {
 436         if(!isLOGEnabled()) { return; }
 437
 438         sb.append("\nException: [" + error.toString().replace("\n", "\n  ") + "]");
 439         Throwable cause = error.getCause();
 440         if(cause != null) {
 441             sb.append("\nCauses:\n");
 442             while(cause != null) {
 443                 sb.append("  ");
 444                 sb.append("[" + cause.toString().replace("\n", "\n  ")  + "]");
 445                 sb.append("\n");
 446                 cause = cause.getCause();
 447             }
 448         }
 449         else {
 450             sb.append("\n");
 451         }
 452
 453         StackTraceElement[] stackTrace = error.getStackTrace();
 454         sb.append("Stack trace (" + stackTrace.length + " elements):\n");
 455         for(int i = 0; i < stackTrace.length; i++) {
 456             StackTraceElement errorElem = stackTrace[i];
 457             sb.append("  [" + i + "] ");
 458             sb.append(errorElem.toString());
 459             sb.append("\n");
 460         }
 461     }
 462
 463     public static void LOGError(Throwable error) {
 464         if(!isLOGEnabled()) { return; }
 465
 466         final StringBuilder sb = new StringBuilder();
 467         LOGError(error, sb);
 468         if(sb.length() > 0) {
 469             __ConsoleLog(sb.toString());
 470         }
 471     }
 472
 473     public static boolean isLOGEnabled() {
 474         return IsLOGEnabled;
 475     }
 476
 477     public static void LOG(Object ...args) {
 478         if(!isLOGEnabled()) { return; }
 479
 480         final StringBuilder sb = new StringBuilder();
 481         for(Object arg : args) {
 482             if(arg instanceof Throwable) {
 483                 LOGError((Throwable) arg, sb);
 484             }
 485             else {
 486                 sb.append(arg);
 487             }
 488         }
 489
 490         if(sb.length() > 0) {
 491             __ConsoleLog(sb.toString());
 492         }
 493     }
 494
 495     private void initialize() {
 496         userCatalogs.updateWithIDAndName("*", "All Pithos users");
 497
 498         lastModified = new Date(); //Initialize if-modified-since value with now.
 499         resources.pithosCss().ensureInjected();
 500         boolean bareContent = Window.Location.getParameter("noframe") != null;
 501         String contentWidth = bareContent ? Const.PERCENT_100 : Const.PERCENT_75;
 502
 503         VerticalPanel outer = new VerticalPanel();
 504         outer.setWidth(Const.PERCENT_100);
 505         if(!bareContent) {
 506             outer.addStyleName("pithos-outer");
 507         }
 508
 509         if(!bareContent) {
 510             topPanel = new TopPanel(this, Pithos.images);
 511             topPanel.setWidth(Const.PERCENT_100);
 512             outer.add(topPanel);
 513             outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 514         }
 515
 516         messagePanel.setVisible(false);
 517         outer.add(messagePanel);
 518         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 519         outer.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
 520
 521         HorizontalPanel header = new HorizontalPanel();
 522         header.addStyleName("pithos-header");
 523         header.setWidth(contentWidth);
 524         if(bareContent) {
 525             header.addStyleName("pithos-header-noframe");
 526         }
 527         upload = new Button("Upload", new ClickHandler() {
 528             @Override
 529             public void onClick(ClickEvent event) {
 530                 if(getSelection() != null) {
 531                     new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 532                 }
 533             }
 534         });
 535         upload.addStyleName("pithos-uploadButton");
 536         header.add(upload);
 537         header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 538         header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 539
 540         toolbar = new Toolbar(this);
 541         header.add(toolbar);
 542         header.setCellHorizontalAlignment(toolbar, HasHorizontalAlignment.ALIGN_CENTER);
 543         header.setCellVerticalAlignment(toolbar, HasVerticalAlignment.ALIGN_MIDDLE);
 544
 545         HorizontalPanel folderStatistics = new HorizontalPanel();
 546         folderStatistics.addStyleName("pithos-folderStatistics");
 547         numOfFiles = new HTML();
 548         folderStatistics.add(numOfFiles);
 549         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 550         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 551         folderStatistics.add(numOfFilesLabel);
 552         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 553         header.add(folderStatistics);
 554         header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 555         header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
 556         header.setCellWidth(folderStatistics, "40px");
 557         outer.add(header);
 558         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 559         // Inner contains the various lists
 560         inner.sinkEvents(Event.ONCONTEXTMENU);
 561         inner.setWidth(Const.PERCENT_100);
 562
 563         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 564         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 565             @Override
 566             public void onSelectionChange(SelectionChangeEvent event) {
 567                 if(folderTreeSelectionModel.getSelectedObject() != null) {
 568                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 569                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 570                     Folder f = folderTreeSelectionModel.getSelectedObject();
 571                     updateFolder(f, true, new Command() {
 572
 573                         @Override
 574                         public void execute() {
 575                             updateStatistics();
 576                         }
 577                     }, true);
 578                     showRelevantToolbarButtons();
 579                 }
 580                 else {
 581                     if(getSelectedTree().equals(folderTreeView)) {
 582                         setSelectedTree(null);
 583                     }
 584                     if(getSelectedTree() == null) {
 585                         showRelevantToolbarButtons();
 586                     }
 587                 }
 588             }
 589         });
 590         selectionModels.add(folderTreeSelectionModel);
 591
 592         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 593         folderTreeView = new FolderTreeView(folderTreeViewModel);
 594         treeViews.add(folderTreeView);
 595
 596         fileList = new FileList(this, images);
 597         inner.add(fileList);
 598
 599         trees = new VerticalPanel();
 600         trees.setWidth(Const.PERCENT_100);
 601
 602         // Add the left and right panels to the split panel.
 603         splitPanel.setLeftWidget(trees);
 604         FlowPanel right = new FlowPanel();
 605         right.getElement().setId("rightPanel");
 606         right.add(inner);
 607         splitPanel.setRightWidget(right);
 608         splitPanel.setSplitPosition("219px");
 609         splitPanel.setSize(Const.PERCENT_100, Const.PERCENT_100);
 610         splitPanel.addStyleName("pithos-splitPanel");
 611         splitPanel.setWidth(contentWidth);
 612         outer.add(splitPanel);
 613         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 614
 615         if(!bareContent) {
 616             statusPanel = new StatusPanel();
 617             statusPanel.setWidth(Const.PERCENT_100);
 618             outer.add(statusPanel);
 619             outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 620         }
 621         else {
 622             splitPanel.addStyleName("pithos-splitPanel-noframe");
 623         }
 624
 625         // Hook the window resize event, so that we can adjust the UI.
 626         Window.addResizeHandler(this);
 627         // Clear out the window's built-in margin, because we want to take
 628         // advantage of the entire client area.
 629         Window.setMargin("0px");
 630         // Finally, add the outer panel to the RootPanel, so that it will be
 631         // displayed.
 632         RootPanel.get().add(outer);
 633         // Call the window resized handler to get the initial sizes setup. Doing
 634         // this in a deferred command causes it to occur after all widgets'
 635         // sizes have been computed by the browser.
 636         Scheduler.get().scheduleIncremental(new RepeatingCommand() {
 637
 638             @Override
 639             public boolean execute() {
 640                 if(!isCloudbarReady()) {
 641                     return true;
 642                 }
 643                 onWindowResized(Window.getClientHeight());
 644                 return false;
 645             }
 646         });
 647
 648         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 649             @Override
 650             public void execute() {
 651                 LOG("Pithos::initialize() Calling Pithos::fetchAccount()");
 652                 fetchAccount(new Command() {
 653
 654                     @Override
 655                     public void execute() {
 656                         if(!account.hasHomeContainer()) {
 657                             createHomeContainer(account, this);
 658                         }
 659                         else if(!account.hasTrashContainer()) {
 660                             createTrashContainer(this);
 661                         }
 662                         else {
 663                             for(Folder f : account.getContainers()) {
 664                                 if(f.getName().equals(Const.TRASH_CONTAINER)) {
 665                                     trash = f;
 666                                     break;
 667                                 }
 668                             }
 669                             trees.add(folderTreeView);
 670                             folderTreeViewModel.initialize(account, new Command() {
 671
 672                                 @Override
 673                                 public void execute() {
 674                                     createMySharedTree();
 675                                 }
 676                             });
 677
 678                             HorizontalPanel separator = new HorizontalPanel();
 679                             separator.addStyleName("pithos-statisticsSeparator");
 680                             separator.add(new HTML(""));
 681                             trees.add(separator);
 682
 683                             groupTreeViewModel = new GroupTreeViewModel(Pithos.this);
 684                             groupTreeView = new GroupTreeView(groupTreeViewModel);
 685                             treeViews.add(groupTreeView);
 686                             trees.add(groupTreeView);
 687                             folderTreeView.showStatistics(account);
 688                         }
 689                     }
 690                 });
 691             }
 692         });
 693     }
 694
 695     public void scheduleRefresh() {
 696         if(!Pithos.EnableScheduledRefresh) { return; }
 697
 698         Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
 699
 700             @Override
 701             public boolean execute() {
 702                 final Folder f = getSelection();
 703                 if(f == null) {
 704                     return true;
 705                 }
 706
 707                 HeadRequest<Folder> head = new HeadRequest<Folder>(Folder.class, getStorageAPIURL(), f.getOwnerID(), "/" + f.getContainer()) {
 708
 709                     @Override
 710                     public void onSuccess(Folder _result) {
 711                         lastModified = new Date();
 712                         if(getSelectedTree().equals(folderTreeView)) {
 713                             updateFolder(f, true, new Command() {
 714
 715                                 @Override
 716                                 public void execute() {
 717                                     scheduleRefresh();
 718                                 }
 719
 720                             }, false);
 721                         }
 722                         else if(getSelectedTree().equals(mysharedTreeView)) {
 723                             updateSharedFolder(f, true, new Command() {
 724
 725                                 @Override
 726                                 public void execute() {
 727                                     scheduleRefresh();
 728                                 }
 729                             });
 730                         }
 731                         else {
 732                             scheduleRefresh();
 733                         }
 734                     }
 735
 736                     @Override
 737                     public void onError(Throwable t) {
 738                         if(t instanceof RestException && ((RestException) t).getHttpStatusCode() == HttpStatus.SC_NOT_MODIFIED) {
 739                             scheduleRefresh();
 740                         }
 741                         else if(retries >= MAX_RETRIES) {
 742                             LOG("Error heading folder. ", t);
 743                             setError(t);
 744                             if(t instanceof RestException) {
 745                                 displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
 746                             }
 747                             else {
 748                                 displayError("System error heading folder: " + t.getMessage());
 749                             }
 750                         }
 751                         else {//retry
 752                             LOG("Retry ", retries);
 753                             Scheduler.get().scheduleDeferred(this);
 754                         }
 755                     }
 756
 757                     @Override
 758                     protected void onUnauthorized(Response response) {
 759                         if(retries >= MAX_RETRIES) {
 760                             sessionExpired();
 761                         }
 762                         else //retry
 763                         {
 764                             Scheduler.get().scheduleDeferred(this);
 765                         }
 766                     }
 767                 };
 768                 head.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 769                 head.setHeader(Const.IF_MODIFIED_SINCE, DateTimeFormat.getFormat(Const.DATE_FORMAT_1).format(lastModified, TimeZone.createTimeZone(0)) + " GMT");
 770                 Scheduler.get().scheduleDeferred(head);
 771
 772                 return false;
 773             }
 774         }, 3000);
 775     }
 776
 777     public void applyPermissions(Folder f) {
 778         if(f != null) {
 779             if(f.isInTrash()) {
 780                 upload.setEnabled(false);
 781                 disableUploadArea();
 782             }
 783             else {
 784                 Boolean[] perms = f.getPermissions().get(userID);
 785                 if(f.getOwnerID().equals(userID) || (perms != null && perms[1] != null && perms[1])) {
 786                     upload.setEnabled(true);
 787                     enableUploadArea();
 788                 }
 789                 else {
 790                     upload.setEnabled(false);
 791                     disableUploadArea();
 792                 }
 793             }
 794         }
 795         else {
 796             upload.setEnabled(false);
 797             disableUploadArea();
 798         }
 799     }
 800
 801     @SuppressWarnings({"rawtypes", "unchecked"})
 802     public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 803         selectedTree = _selectedTree;
 804
 805         for(SingleSelectionModel s : selectionModels) {
 806             if(!s.equals(model) && s.getSelectedObject() != null) {
 807                 s.setSelected(s.getSelectedObject(), false);
 808             }
 809         }
 810     }
 811
 812     public void showFiles(final Folder f) {
 813         Set<File> files = f.getFiles();
 814         showFiles(files);
 815     }
 816
 817     public void showFiles(Set<File> files) {
 818         fileList.setFiles(new ArrayList<File>(files));
 819     }
 820
 821     /**
 822      * Parse and store the user credentials to the appropriate fields.
 823      */
 824     private boolean parseUserCredentials() {
 825         final String cookie = otherProperties.get(Const.AUTH_COOKIE);
 826         String auth = Cookies.getCookie(cookie);
 827         if(auth == null) {
 828             authenticateUser();
 829             return false;
 830         }
 831         if(auth.startsWith("\"")) {
 832             auth = auth.substring(1);
 833         }
 834         if(auth.endsWith("\"")) {
 835             auth = auth.substring(0, auth.length() - 1);
 836         }
 837         String[] authSplit = auth.split("\\" + config.cookieSeparator(), 2);
 838         if(authSplit.length != 2) {
 839             authenticateUser();
 840             return false;
 841         }
 842         this.userID = authSplit[0];
 843         this.userToken = authSplit[1];
 844
 845         String gotoUrl = Window.Location.getParameter("goto");
 846         if(gotoUrl != null && gotoUrl.length() > 0) {
 847             Window.Location.assign(gotoUrl);
 848             return false;
 849         }
 850         return true;
 851     }
 852
 853     /**
 854      * Redirect the user to the login page for authentication.
 855      */
 856     protected void authenticateUser() {
 857         Dictionary otherProperties = Dictionary.getDictionary(Const.OTHER_PROPERTIES);
 858         Window.Location.assign(otherProperties.get(Const.LOGIN_URL) + Window.Location.getHref());
 859     }
 860
 861     public void fetchAccount(final Command callback) {
 862         String path = "?format=json";
 863
 864         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getStorageAPIURL(), userID, path) {
 865             @Override
 866             public void onSuccess(AccountResource accountResource) {
 867                 account = accountResource;
 868                 if(callback != null) {
 869                     callback.execute();
 870                 }
 871
 872                 final List<String> memberIDs = new ArrayList<String>();
 873                 final List<Group> groups = account.getGroups();
 874                 for(Group group : groups) {
 875                     memberIDs.addAll(group.getMemberIDs());
 876                 }
 877                 memberIDs.add(Pithos.this.getUserID());
 878
 879                 final List<String> theUnknown = Pithos.this.filterUserIDsWithUnknownDisplayName(memberIDs);
 880                 // Initialize the user catalog
 881                 new UpdateUserCatalogs(Pithos.this, theUnknown).scheduleDeferred();
 882                 LOG("Called new UpdateUserCatalogs(Pithos.this, theUnknown).scheduleDeferred();");
 883             }
 884
 885             @Override
 886             public void onError(Throwable t) {
 887                 LOG("Error getting account", t);
 888                 setError(t);
 889                 if(t instanceof RestException) {
 890                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 891                 }
 892                 else {
 893                     displayError("System error fetching user data: " + t.getMessage());
 894                 }
 895             }
 896
 897             @Override
 898             protected void onUnauthorized(Response response) {
 899                 sessionExpired();
 900             }
 901         };
 902         getAccount.setHeader(Const.X_AUTH_TOKEN, userToken);
 903         Scheduler.get().scheduleDeferred(getAccount);
 904     }
 905
 906     public void updateStatistics() {
 907         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getStorageAPIURL(), userID, "", account) {
 908
 909             @Override
 910             public void onSuccess(AccountResource _result) {
 911                 folderTreeView.showStatistics(account);
 912             }
 913
 914             @Override
 915             public void onError(Throwable t) {
 916                 LOG("Error getting account", t);
 917                 setError(t);
 918                 if(t instanceof RestException) {
 919                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 920                 }
 921                 else {
 922                     displayError("System error fetching user data: " + t.getMessage());
 923                 }
 924             }
 925
 926             @Override
 927             protected void onUnauthorized(Response response) {
 928                 sessionExpired();
 929             }
 930         };
 931         headAccount.setHeader(Const.X_AUTH_TOKEN, userToken);
 932         Scheduler.get().scheduleDeferred(headAccount);
 933     }
 934
 935     protected void createHomeContainer(final AccountResource _account, final Command callback) {
 936         String path = "/" + Const.HOME_CONTAINER;
 937         PutRequest createPithos = new PutRequest(getStorageAPIURL(), getUserID(), path) {
 938             @Override
 939             public void onSuccess(Resource result) {
 940                 if(!_account.hasTrashContainer()) {
 941                     createTrashContainer(callback);
 942                 }
 943                 else {
 944                     fetchAccount(callback);
 945                 }
 946             }
 947
 948             @Override
 949             public void onError(Throwable t) {
 950                 LOG("Error creating pithos", t);
 951                 setError(t);
 952                 if(t instanceof RestException) {
 953                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 954                 }
 955                 else {
 956                     displayError("System error Error creating pithos: " + t.getMessage());
 957                 }
 958             }
 959
 960             @Override
 961             protected void onUnauthorized(Response response) {
 962                 sessionExpired();
 963             }
 964         };
 965         createPithos.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 966         Scheduler.get().scheduleDeferred(createPithos);
 967     }
 968
 969     protected void createTrashContainer(final Command callback) {
 970         String path = "/" + Const.TRASH_CONTAINER;
 971         PutRequest createPithos = new PutRequest(getStorageAPIURL(), getUserID(), path) {
 972             @Override
 973             public void onSuccess(Resource result) {
 974                 fetchAccount(callback);
 975             }
 976
 977             @Override
 978             public void onError(Throwable t) {
 979                 LOG("Error creating pithos", t);
 980                 setError(t);
 981                 if(t instanceof RestException) {
 982                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 983                 }
 984                 else {
 985                     displayError("System error Error creating pithos: " + t.getMessage());
 986                 }
 987             }
 988
 989             @Override
 990             protected void onUnauthorized(Response response) {
 991                 sessionExpired();
 992             }
 993         };
 994         createPithos.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 995         Scheduler.get().scheduleDeferred(createPithos);
 996     }
 997
 998     /**
 999      * Creates an HTML fragment that places an image & caption together, for use
1000      * in a group header.
1001      *
1002      * @param imageProto an image prototype for an image
1003      * @param caption    the group caption
1004      * @return the header HTML fragment
1005      */
1006     private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
1007         String captionHTML = "<table class='caption' cellpadding='0' "
1008             + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
1009             + "</td><td id =" + caption + " class='rcaption'><b style='white-space:nowrap'>&nbsp;"
1010             + caption + "</b></td></tr></table>";
1011         return captionHTML;
1012     }
1013
1014     protected void onWindowResized(int height) {
1015         // Adjust the split panel to take up the available room in the window.
1016         int newHeight = height - splitPanel.getAbsoluteTop() - 153;
1017         if(newHeight < 1) {
1018             newHeight = 1;
1019         }
1020         splitPanel.setHeight("" + newHeight);
1021         inner.setHeight("" + newHeight);
1022     }
1023
1024     native boolean isCloudbarReady()/*-{
1025       if ($wnd.$("div.cloudbar") && $wnd.$("div.cloudbar").height() > 0)
1026         return true;
1027       return false;
1028     }-*/;
1029
1030     @Override
1031     public void onResize(ResizeEvent event) {
1032         int height = event.getHeight();
1033         onWindowResized(height);
1034     }
1035
1036     /**
1037      * Display an error message.
1038      *
1039      * @param msg the message to display
1040      */
1041     public void displayError(String msg) {
1042         messagePanel.displayError(msg);
1043         onWindowResized(Window.getClientHeight());
1044     }
1045
1046     /**
1047      * Display a warning message.
1048      *
1049      * @param msg the message to display
1050      */
1051     public void displayWarning(String msg) {
1052         messagePanel.displayWarning(msg);
1053         onWindowResized(Window.getClientHeight());
1054     }
1055
1056     /**
1057      * Display an informational message.
1058      *
1059      * @param msg the message to display
1060      */
1061     public void displayInformation(String msg) {
1062         messagePanel.displayInformation(msg);
1063         onWindowResized(Window.getClientHeight());
1064     }
1065
1066     /**
1067      * Retrieve the fileList.
1068      *
1069      * @return the fileList
1070      */
1071     public FileList getFileList() {
1072         return fileList;
1073     }
1074
1075     /**
1076      * Retrieve the topPanel.
1077      *
1078      * @return the topPanel
1079      */
1080     TopPanel getTopPanel() {
1081         return topPanel;
1082     }
1083
1084     /**
1085      * Retrieve the clipboard.
1086      *
1087      * @return the clipboard
1088      */
1089     public Clipboard getClipboard() {
1090         return clipboard;
1091     }
1092
1093     public StatusPanel getStatusPanel() {
1094         return statusPanel;
1095     }
1096
1097     public String getUserToken() {
1098         return userToken;
1099     }
1100
1101     public static native void preventIESelection() /*-{
1102       $doc.body.onselectstart = function () {
1103         return false;
1104       };
1105     }-*/;
1106
1107     public static native void enableIESelection() /*-{
1108       if ($doc.body.onselectstart != null)
1109         $doc.body.onselectstart = null;
1110     }-*/;
1111
1112     public static String getStorageAPIURL() {
1113         return STORAGE_API_URL;
1114     }
1115
1116     public static String getStorageViewURL() {
1117         return STORAGE_VIEW_URL;
1118     }
1119
1120     public static boolean isShowCopyrightMessage() {
1121         return SHOW_COPYRIGHT;
1122     }
1123
1124     public static String getUserCatalogsURL() {
1125         return USER_CATALOGS_API_URL;
1126     }
1127
1128     public static String getFileViewURL(File file) {
1129         return Pithos.getStorageViewURL() + file.getOwnerID() + file.getUri();
1130     }
1131
1132     /**
1133      * History support for folder navigation
1134      * adds a new browser history entry
1135      *
1136      * @param key
1137      */
1138     public void updateHistory(String key) {
1139 //              Replace any whitespace of the initial string to "+"
1140 //              String result = key.replaceAll("\\s","+");
1141 //              Add a new browser history entry.
1142 //              History.newItem(result);
1143         History.newItem(key);
1144     }
1145
1146     public void deleteFolder(final Folder folder, final Command callback) {
1147         final PleaseWaitPopup pwp = new PleaseWaitPopup();
1148         pwp.center();
1149         String path = "/" + folder.getContainer() + "/" + folder.getPrefix() + "?delimiter=/" + "&t=" + System.currentTimeMillis();
1150         DeleteRequest deleteFolder = new DeleteRequest(getStorageAPIURL(), folder.getOwnerID(), path) {
1151
1152             @Override
1153             protected void onUnauthorized(Response response) {
1154                 pwp.hide();
1155                 sessionExpired();
1156             }
1157
1158             @Override
1159             public void onSuccess(Resource result) {
1160                 updateFolder(folder.getParent(), true, new Command() {
1161
1162                     @Override
1163                     public void execute() {
1164                         folderTreeSelectionModel.setSelected(folder.getParent(), true);
1165                         updateStatistics();
1166                         if(callback != null) {
1167                             callback.execute();
1168                         }
1169                         pwp.hide();
1170                     }
1171                 }, true);
1172             }
1173
1174             @Override
1175             public void onError(Throwable t) {
1176                 LOG(t);
1177                 setError(t);
1178                 if(t instanceof RestException) {
1179                     if(((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND) {
1180                         displayError("Unable to delete folder: " + ((RestException) t).getHttpStatusText());
1181                     }
1182                     else {
1183                         onSuccess(null);
1184                     }
1185                 }
1186                 else {
1187                     displayError("System error unable to delete folder: " + t.getMessage());
1188                 }
1189                 pwp.hide();
1190             }
1191         };
1192         deleteFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1193         Scheduler.get().scheduleDeferred(deleteFolder);
1194     }
1195
1196     public FolderTreeView getFolderTreeView() {
1197         return folderTreeView;
1198     }
1199
1200     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
1201         if(iter.hasNext()) {
1202             File file = iter.next();
1203             String path = targetUri + "/" + file.getName();
1204             PutRequest copyFile = new PutRequest(getStorageAPIURL(), targetUsername, path) {
1205                 @Override
1206                 public void onSuccess(Resource result) {
1207                     copyFiles(iter, targetUsername, targetUri, callback);
1208                 }
1209
1210                 @Override
1211                 public void onError(Throwable t) {
1212                     LOG(t);
1213                     setError(t);
1214                     if(t instanceof RestException) {
1215                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
1216                     }
1217                     else {
1218                         displayError("System error unable to copy file: " + t.getMessage());
1219                     }
1220                 }
1221
1222                 @Override
1223                 protected void onUnauthorized(Response response) {
1224                     sessionExpired();
1225                 }
1226             };
1227             copyFile.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1228             copyFile.setHeader(Const.X_COPY_FROM, URL.encodePathSegment(file.getUri()));
1229             if(!file.getOwnerID().equals(targetUsername)) {
1230                 copyFile.setHeader(Const.X_SOURCE_ACCOUNT, URL.encodePathSegment(file.getOwnerID()));
1231             }
1232             copyFile.setHeader(Const.CONTENT_TYPE, file.getContentType());
1233             Scheduler.get().scheduleDeferred(copyFile);
1234         }
1235         else if(callback != null) {
1236             callback.execute();
1237         }
1238     }
1239
1240     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, boolean move, final Command callback) {
1241         String path = targetUri + "?delimiter=/";
1242         PutRequest copyFolder = new PutRequest(getStorageAPIURL(), targetUsername, path) {
1243             @Override
1244             public void onSuccess(Resource result) {
1245                 if(callback != null) {
1246                     callback.execute();
1247                 }
1248             }
1249
1250             @Override
1251             public void onError(Throwable t) {
1252                 LOG(t);
1253                 setError(t);
1254                 if(t instanceof RestException) {
1255                     displayError("Unable to copy folder: " + ((RestException) t).getHttpStatusText());
1256                 }
1257                 else {
1258                     displayError("System error copying folder: " + t.getMessage());
1259                 }
1260             }
1261
1262             @Override
1263             protected void onUnauthorized(Response response) {
1264                 sessionExpired();
1265             }
1266         };
1267         copyFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1268         copyFolder.setHeader(Const.ACCEPT, "*/*");
1269         copyFolder.setHeader(Const.CONTENT_LENGTH, "0");
1270         copyFolder.setHeader(Const.CONTENT_TYPE, "application/directory");
1271         if(!f.getOwnerID().equals(targetUsername)) {
1272             copyFolder.setHeader(Const.X_SOURCE_ACCOUNT, f.getOwnerID());
1273         }
1274         if(move) {
1275             copyFolder.setHeader(Const.X_MOVE_FROM, URL.encodePathSegment(f.getUri()));
1276         }
1277         else {
1278             copyFolder.setHeader(Const.X_COPY_FROM, URL.encodePathSegment(f.getUri()));
1279         }
1280         Scheduler.get().scheduleDeferred(copyFolder);
1281     }
1282
1283     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1284         selectionModels.add(model);
1285     }
1286
1287     public OtherSharedTreeView getOtherSharedTreeView() {
1288         return otherSharedTreeView;
1289     }
1290
1291     public void updateTrash(boolean showFiles, Command callback) {
1292         updateFolder(trash, showFiles, callback, true);
1293     }
1294
1295     public void updateGroupsNode() {
1296         groupTreeView.updateGroupNode(null);
1297     }
1298
1299     public Group addGroup(String groupname) {
1300         Group newGroup = new Group(groupname);
1301         account.addGroup(newGroup);
1302         groupTreeView.updateGroupNode(null);
1303         return newGroup;
1304     }
1305
1306     public void removeGroup(Group group) {
1307         account.removeGroup(group);
1308         updateGroupsNode();
1309     }
1310
1311     public TreeView getSelectedTree() {
1312         return selectedTree;
1313     }
1314
1315     public void setSelectedTree(TreeView selected) {
1316         selectedTree = selected;
1317     }
1318
1319     public Folder getSelection() {
1320         if(selectedTree != null) {
1321             return selectedTree.getSelection();
1322         }
1323         return null;
1324     }
1325
1326     public void showFolderStatistics(int folderFileCount) {
1327         numOfFiles.setHTML(String.valueOf(folderFileCount));
1328     }
1329
1330     public GroupTreeView getGroupTreeView() {
1331         return groupTreeView;
1332     }
1333
1334     public void sessionExpired() {
1335         new SessionExpiredDialog(this).center();
1336     }
1337
1338     public void updateRootFolder(Command callback) {
1339         updateFolder(account.getPithos(), false, callback, true);
1340     }
1341
1342     void createMySharedTree() {
1343         LOG("Pithos::createMySharedTree()");
1344         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1345         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1346             @Override
1347             public void onSelectionChange(SelectionChangeEvent event) {
1348                 if(mysharedTreeSelectionModel.getSelectedObject() != null) {
1349                     deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1350                     upload.setEnabled(false);
1351                     disableUploadArea();
1352                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1353                     showRelevantToolbarButtons();
1354                 }
1355                 else {
1356                     if(getSelectedTree().equals(mysharedTreeView)) {
1357                         setSelectedTree(null);
1358                     }
1359                     if(getSelectedTree() == null) {
1360                         showRelevantToolbarButtons();
1361                     }
1362                 }
1363             }
1364         });
1365         selectionModels.add(mysharedTreeSelectionModel);
1366         mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1367         mysharedTreeViewModel.initialize(new Command() {
1368
1369             @Override
1370             public void execute() {
1371                 mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1372                 trees.insert(mysharedTreeView, 2);
1373                 treeViews.add(mysharedTreeView);
1374                 createOtherSharedTree();
1375             }
1376         });
1377     }
1378
1379     void createOtherSharedTree() {
1380         LOG("Pithos::createOtherSharedTree()");
1381         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1382         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1383             @Override
1384             public void onSelectionChange(SelectionChangeEvent event) {
1385                 if(otherSharedTreeSelectionModel.getSelectedObject() != null) {
1386                     deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1387                     applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1388                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true, null);
1389                     showRelevantToolbarButtons();
1390                 }
1391                 else {
1392                     if(getSelectedTree().equals(otherSharedTreeView)) {
1393                         setSelectedTree(null);
1394                     }
1395                     if(getSelectedTree() == null) {
1396                         showRelevantToolbarButtons();
1397                     }
1398                 }
1399             }
1400         });
1401         selectionModels.add(otherSharedTreeSelectionModel);
1402         otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1403         // #3784 We show it empty...
1404         otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel, true);
1405         trees.insert(otherSharedTreeView, 1);
1406
1407         LOG("Pithos::createOtherSharedTree(), initializing otherSharedTreeViewModel with a callback");
1408         otherSharedTreeViewModel.initialize(new Command() {
1409             @Override
1410             public void execute() {
1411                 // #3784 ... then remove the empty stuff and add a new view with the populated model
1412                 trees.remove(otherSharedTreeView);
1413
1414                 otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel, false);
1415                 trees.insert(otherSharedTreeView, 1);
1416                 treeViews.add(otherSharedTreeView);
1417                 scheduleRefresh();
1418             }
1419         });
1420     }
1421
1422     public String getErrorData() {
1423         final StringBuilder sb = new StringBuilder();
1424         final String NL = Const.NL;
1425         Throwable t = this.error;
1426         while(t != null) {
1427             sb.append(t.toString());
1428             sb.append(NL);
1429             StackTraceElement[] traces = t.getStackTrace();
1430             for(StackTraceElement trace : traces) {
1431                 sb.append("  [");
1432                 sb.append(trace.getClassName());
1433                 sb.append("::");
1434                 sb.append(trace.getMethodName());
1435                 sb.append("() at ");
1436                 sb.append(trace.getFileName());
1437                 sb.append(":");
1438                 sb.append(trace.getLineNumber());
1439                 sb.append("]");
1440                 sb.append(NL);
1441             }
1442             t = t.getCause();
1443         }
1444
1445         return sb.toString();
1446     }
1447
1448     public void setError(Throwable t) {
1449         error = t;
1450         LOG(t);
1451     }
1452
1453     public void showRelevantToolbarButtons() {
1454         toolbar.showRelevantButtons();
1455     }
1456
1457     public FileUploadDialog getFileUploadDialog() {
1458         if(fileUploadDialog == null) {
1459             fileUploadDialog = new FileUploadDialog(this);
1460         }
1461         return fileUploadDialog;
1462     }
1463
1464     public void hideUploadIndicator() {
1465         upload.removeStyleName("pithos-uploadButton-loading");
1466         upload.setTitle("");
1467     }
1468
1469     public void showUploadIndicator() {
1470         upload.addStyleName("pithos-uploadButton-loading");
1471         upload.setTitle("Upload in progress. Click for details.");
1472     }
1473
1474     public void scheduleFolderHeadCommand(final Folder folder, final Command callback) {
1475         if(folder == null) {
1476             if(callback != null) {
1477                 callback.execute();
1478             }
1479         }
1480         else {
1481             HeadRequest<Folder> headFolder = new HeadRequest<Folder>(Folder.class, getStorageAPIURL(), folder.getOwnerID(), folder.getUri(), folder) {
1482
1483                 @Override
1484                 public void onSuccess(Folder _result) {
1485                     if(callback != null) {
1486                         callback.execute();
1487                     }
1488                 }
1489
1490                 @Override
1491                 public void onError(Throwable t) {
1492                     if(t instanceof RestException) {
1493                         if(((RestException) t).getHttpStatusCode() == Response.SC_NOT_FOUND) {
1494                             final String path = folder.getUri();
1495                             PutRequest newFolder = new PutRequest(getStorageAPIURL(), folder.getOwnerID(), path) {
1496                                 @Override
1497                                 public void onSuccess(Resource _result) {
1498                                     scheduleFolderHeadCommand(folder, callback);
1499                                 }
1500
1501                                 @Override
1502                                 public void onError(Throwable _t) {
1503                                     setError(_t);
1504                                     if(_t instanceof RestException) {
1505                                         displayError("Unable to create folder: " + ((RestException) _t).getHttpStatusText());
1506                                     }
1507                                     else {
1508                                         displayError("System error creating folder: " + _t.getMessage());
1509                                     }
1510                                 }
1511
1512                                 @Override
1513                                 protected void onUnauthorized(Response response) {
1514                                     sessionExpired();
1515                                 }
1516                             };
1517                             newFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1518                             newFolder.setHeader(Const.CONTENT_TYPE, "application/folder");
1519                             newFolder.setHeader(Const.ACCEPT, "*/*");
1520                             newFolder.setHeader(Const.CONTENT_LENGTH, "0");
1521                             Scheduler.get().scheduleDeferred(newFolder);
1522                         }
1523                         else if(((RestException) t).getHttpStatusCode() == Response.SC_FORBIDDEN) {
1524                             onSuccess(folder);
1525                         }
1526                         else {
1527                             displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
1528                         }
1529                     }
1530                     else {
1531                         displayError("System error heading folder: " + t.getMessage());
1532                     }
1533
1534                     LOG("Error heading folder", t);
1535                     setError(t);
1536                 }
1537
1538                 @Override
1539                 protected void onUnauthorized(Response response) {
1540                     sessionExpired();
1541                 }
1542             };
1543             headFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1544             Scheduler.get().scheduleDeferred(headFolder);
1545         }
1546     }
1547
1548     public void scheduleFileHeadCommand(File f, final Command callback) {
1549         HeadRequest<File> headFile = new HeadRequest<File>(File.class, getStorageAPIURL(), f.getOwnerID(), f.getUri(), f) {
1550
1551             @Override
1552             public void onSuccess(File _result) {
1553                 if(callback != null) {
1554                     callback.execute();
1555                 }
1556             }
1557
1558             @Override
1559             public void onError(Throwable t) {
1560                 LOG("Error heading file", t);
1561                 setError(t);
1562                 if(t instanceof RestException) {
1563                     displayError("Error heading file: " + ((RestException) t).getHttpStatusText());
1564                 }
1565                 else {
1566                     displayError("System error heading file: " + t.getMessage());
1567                 }
1568             }
1569
1570             @Override
1571             protected void onUnauthorized(Response response) {
1572                 sessionExpired();
1573             }
1574         };
1575         headFile.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1576         Scheduler.get().scheduleDeferred(headFile);
1577     }
1578
1579     public boolean isMySharedSelected() {
1580         return getSelectedTree().equals(getMySharedTreeView());
1581     }
1582
1583     private Folder getUploadFolder() {
1584         if(folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1585             return getSelection();
1586         }
1587         return null;
1588     }
1589
1590     private void updateUploadFolder() {
1591         updateUploadFolder(null);
1592     }
1593
1594     private void updateUploadFolder(final JsArrayString urls) {
1595         if(folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1596             Folder f = getSelection();
1597             if(getSelectedTree().equals(getFolderTreeView())) {
1598                 updateFolder(f, true, new Command() {
1599
1600                     @Override
1601                     public void execute() {
1602                         updateStatistics();
1603                         if(urls != null) {
1604                             selectUploadedFiles(urls);
1605                         }
1606                     }
1607                 }, false);
1608             }
1609             else {
1610                 updateOtherSharedFolder(f, true, null);
1611             }
1612         }
1613     }
1614
1615     public native void disableUploadArea() /*-{
1616       var uploader = $wnd.$("#uploader").pluploadQueue();
1617       var dropElm = $wnd.document.getElementById('rightPanel');
1618       $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1619     }-*/;
1620
1621     public native void enableUploadArea() /*-{
1622       var uploader = $wnd.$("#uploader").pluploadQueue();
1623       var dropElm = $wnd.document.getElementById('rightPanel');
1624       $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1625       if (uploader.runtime == 'html5') {
1626         uploader.settings.drop_element = 'rightPanel';
1627         uploader.trigger('PostInit');
1628       }
1629     }-*/;
1630
1631     public void showUploadAlert(int nOfFiles) {
1632         if(uploadAlert == null) {
1633             uploadAlert = new UploadAlert(this, nOfFiles);
1634         }
1635         if(!uploadAlert.isShowing()) {
1636             uploadAlert.setPopupPositionAndShow(new PopupPanel.PositionCallback() {
1637
1638                 @Override
1639                 public void setPosition(int offsetWidth, int offsetHeight) {
1640                     uploadAlert.setPopupPosition((Window.getClientWidth() - offsetWidth) / 2, statusPanel.getAbsoluteTop() - offsetHeight);
1641                 }
1642             });
1643         }
1644         uploadAlert.setNumOfFiles(nOfFiles);
1645     }
1646
1647     public void hideUploadAlert() {
1648         if(uploadAlert != null && uploadAlert.isShowing()) {
1649             uploadAlert.hide();
1650         }
1651     }
1652
1653     public void selectUploadedFiles(JsArrayString urls) {
1654         List<String> selectedUrls = new ArrayList<String>();
1655         for(int i = 0; i < urls.length(); i++) {
1656             selectedUrls.add(urls.get(i));
1657         }
1658         fileList.selectByUrl(selectedUrls);
1659     }
1660
1661     public void purgeContainer(final Folder container) {
1662         String path = "/" + container.getName() + "?delimiter=/";
1663         DeleteRequest delete = new DeleteRequest(getStorageAPIURL(), getUserID(), path) {
1664
1665             @Override
1666             protected void onUnauthorized(Response response) {
1667                 sessionExpired();
1668             }
1669
1670             @Override
1671             public void onSuccess(Resource result) {
1672                 updateFolder(container, true, null, true);
1673             }
1674
1675             @Override
1676             public void onError(Throwable t) {
1677                 LOG("Error deleting trash", t);
1678                 setError(t);
1679                 if(t instanceof RestException) {
1680                     displayError("Error deleting trash: " + ((RestException) t).getHttpStatusText());
1681                 }
1682                 else {
1683                     displayError("System error deleting trash: " + t.getMessage());
1684                 }
1685             }
1686         };
1687         delete.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1688         Scheduler.get().scheduleDeferred(delete);
1689     }
1690 }