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
  82     private static final boolean IsLOGEnabled = true;
  83
  84     public static final Configuration config = GWT.create(Configuration.class);
  85
  86     public interface Style extends CssResource {
  87         String commandAnchor();
  88
  89         String statistics();
  90
  91         @ClassName("gwt-HTML")
  92         String html();
  93
  94         String uploadAlert();
  95
  96         String uploadAlertLink();
  97
  98         String uploadAlertProgress();
  99
 100         String uploadAlertPercent();
 101
 102         String uploadAlertClose();
 103     }
 104
 105     public interface Resources extends ClientBundle {
 106         @Source("Pithos.css")
 107         Style pithosCss();
 108
 109         @Source("gr/grnet/pithos/resources/close-popup.png")
 110         ImageResource closePopup();
 111     }
 112
 113     public static Resources resources = GWT.create(Resources.class);
 114
 115     /**
 116      * Instantiate an application-level image bundle. This object will provide
 117      * programmatic access to all the images needed by widgets.
 118      */
 119     static Images images = (Images) GWT.create(Images.class);
 120
 121     public String getUserID() {
 122         return userID;
 123     }
 124
 125     public UserCatalogs getUserCatalogs() {
 126         return userCatalogs;
 127     }
 128
 129     public String getCurrentUserDisplayNameOrID() {
 130         final String displayName = userCatalogs.getDisplayName(getUserID());
 131         return displayName == null ? getUserID() : displayName;
 132     }
 133
 134     public boolean hasDisplayNameForUserID(String userID) {
 135         return userCatalogs.getDisplayName(userID) != null;
 136     }
 137
 138     public boolean hasIDForUserDisplayName(String userDisplayName) {
 139         return userCatalogs.getID(userDisplayName) != null;
 140     }
 141
 142     public String getDisplayNameForUserID(String userID) {
 143         return userCatalogs.getDisplayName(userID);
 144     }
 145
 146     public String getIDForUserDisplayName(String userDisplayName) {
 147         return userCatalogs.getID(userDisplayName);
 148     }
 149
 150     public List<String> getDisplayNamesForUserIDs(List<String> userIDs) {
 151         if(userIDs == null) {
 152             userIDs = new ArrayList<String>();
 153         }
 154         final List<String> userDisplayNames = new ArrayList<String>();
 155         for(String userID : userIDs) {
 156             final String displayName = getDisplayNameForUserID(userID);
 157             userDisplayNames.add(displayName);
 158         }
 159
 160         return userDisplayNames;
 161     }
 162
 163     public List<String> filterUserIDsWithUnknownDisplayName(Collection<String> userIDs) {
 164         if(userIDs == null) {
 165             userIDs = new ArrayList<String>();
 166         }
 167         final List<String> filtered = new ArrayList<String>();
 168         for(String userID : userIDs) {
 169             if(!this.userCatalogs.hasID(userID)) {
 170                 filtered.add(userID);
 171             }
 172         }
 173         return filtered;
 174     }
 175
 176     public void setAccount(AccountResource acct) {
 177         account = acct;
 178     }
 179
 180     public AccountResource getAccount() {
 181         return account;
 182     }
 183
 184     public void updateFolder(Folder f, boolean showfiles, Command callback, final boolean openParent) {
 185         folderTreeView.updateFolder(f, showfiles, callback, openParent);
 186     }
 187
 188     public void updateGroupNode(Group group) {
 189         groupTreeView.updateGroupNode(group);
 190     }
 191
 192     public void updateMySharedRoot() {
 193         mysharedTreeView.updateRoot();
 194     }
 195
 196     public void updateSharedFolder(Folder f, boolean showfiles, Command callback) {
 197         mysharedTreeView.updateFolder(f, showfiles, callback);
 198     }
 199
 200     public void updateSharedFolder(Folder f, boolean showfiles) {
 201         updateSharedFolder(f, showfiles, null);
 202     }
 203
 204     public void updateOtherSharedFolder(Folder f, boolean showfiles, Command callback) {
 205         otherSharedTreeView.updateFolder(f, showfiles, callback);
 206     }
 207
 208     public MysharedTreeView getMySharedTreeView() {
 209         return mysharedTreeView;
 210     }
 211
 212     /**
 213      * An aggregate image bundle that pulls together all the images for this
 214      * application into a single bundle.
 215      */
 216     public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 217
 218         @Source("gr/grnet/pithos/resources/document.png")
 219         ImageResource folders();
 220
 221         @Source("gr/grnet/pithos/resources/advancedsettings.png")
 222         @ImageOptions(width = 32, height = 32)
 223         ImageResource tools();
 224     }
 225
 226     private Throwable error;
 227
 228     /**
 229      * The Application Clipboard implementation;
 230      */
 231     private Clipboard clipboard = new Clipboard();
 232
 233     /**
 234      * The top panel that contains the menu bar.
 235      */
 236     private TopPanel topPanel;
 237
 238     /**
 239      * The panel that contains the various system messages.
 240      */
 241     private MessagePanel messagePanel = new MessagePanel(this, Pithos.images);
 242
 243     /**
 244      * The bottom panel that contains the status bar.
 245      */
 246     StatusPanel statusPanel = null;
 247
 248     /**
 249      * The file list widget.
 250      */
 251     private FileList fileList;
 252
 253     /**
 254      * The tab panel that occupies the right side of the screen.
 255      */
 256     private VerticalPanel inner = new VerticalPanel();
 257
 258
 259     /**
 260      * The split panel that will contain the left and right panels.
 261      */
 262     private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 263
 264     /**
 265      * The currently selected item in the application, for use by the Edit menu
 266      * commands. Potential types are Folder, File, User and Group.
 267      */
 268     private Object currentSelection;
 269
 270     public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 271
 272     /**
 273      * The ID that uniquely identifies the user in Pithos+.
 274      * Currently this is a UUID. It used to be the user's email.
 275      */
 276     private String userID = null;
 277
 278     /**
 279      * Hold mappings from user UUIDs to emails and vice-versa.
 280      */
 281     private UserCatalogs userCatalogs = new UserCatalogs();
 282
 283     /**
 284      * The authentication token of the current user.
 285      */
 286     private String userToken;
 287
 288     VerticalPanel trees;
 289
 290     SingleSelectionModel<Folder> folderTreeSelectionModel;
 291     FolderTreeViewModel folderTreeViewModel;
 292     FolderTreeView folderTreeView;
 293
 294     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 295     MysharedTreeViewModel mysharedTreeViewModel;
 296     MysharedTreeView mysharedTreeView = null;
 297
 298     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 299     OtherSharedTreeViewModel otherSharedTreeViewModel;
 300     OtherSharedTreeView otherSharedTreeView = null;
 301
 302     GroupTreeViewModel groupTreeViewModel;
 303     GroupTreeView groupTreeView;
 304
 305     TreeView selectedTree;
 306     protected AccountResource account;
 307
 308     Folder trash;
 309
 310     List<Composite> treeViews = new ArrayList<Composite>();
 311
 312     @SuppressWarnings("rawtypes")
 313     List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 314
 315     public Button upload;
 316
 317     private HTML numOfFiles;
 318
 319     private Toolbar toolbar;
 320
 321     private FileUploadDialog fileUploadDialog = new FileUploadDialog(this);
 322
 323     UploadAlert uploadAlert;
 324
 325     Date lastModified;
 326
 327     @Override
 328     public void onModuleLoad() {
 329         if(parseUserCredentials()) {
 330             initialize();
 331         }
 332     }
 333
 334     static native void __ConsoleLog(String message) /*-{
 335       try {
 336         console.log(message);
 337       } catch (e) {
 338       }
 339     }-*/;
 340
 341     public static void LOGError(Throwable error, StringBuilder sb) {
 342         if(!IsLOGEnabled) { return; }
 343
 344         sb.append("\nException: [" + error.toString().replace("\n", "\n  ") + "]");
 345         Throwable cause = error.getCause();
 346         if(cause != null) {
 347             sb.append("\nCauses:\n");
 348             while(cause != null) {
 349                 sb.append("  ");
 350                 sb.append("[" + cause.toString().replace("\n", "\n  ")  + "]");
 351                 sb.append("\n");
 352                 cause = cause.getCause();
 353             }
 354         }
 355         else {
 356             sb.append("\n");
 357         }
 358
 359         StackTraceElement[] stackTrace = error.getStackTrace();
 360         sb.append("Stack trace (" + stackTrace.length + " elements):\n");
 361         for(int i = 0; i < stackTrace.length; i++) {
 362             StackTraceElement errorElem = stackTrace[i];
 363             sb.append("  [" + i + "] ");
 364             sb.append(errorElem.toString());
 365             sb.append("\n");
 366         }
 367     }
 368
 369     public static void LOGError(Throwable error) {
 370         if(!IsLOGEnabled) { return; }
 371
 372         final StringBuilder sb = new StringBuilder();
 373         LOGError(error, sb);
 374         if(sb.length() > 0) {
 375             __ConsoleLog(sb.toString());
 376         }
 377     }
 378
 379     public static boolean isLogEnabled() {
 380         return IsLOGEnabled;
 381     }
 382
 383     public static void LOG(Object ...args) {
 384         if(!IsLOGEnabled) { return; }
 385
 386         final StringBuilder sb = new StringBuilder();
 387         for(Object arg : args) {
 388             if(arg instanceof Throwable) {
 389                 LOGError((Throwable) arg, sb);
 390             }
 391             else {
 392                 sb.append(arg);
 393             }
 394         }
 395
 396         if(sb.length() > 0) {
 397             __ConsoleLog(sb.toString());
 398         }
 399     }
 400
 401     private void initialize() {
 402         lastModified = new Date(); //Initialize if-modified-since value with now.
 403         resources.pithosCss().ensureInjected();
 404         boolean bareContent = Window.Location.getParameter("noframe") != null;
 405         String contentWidth = bareContent ? Const.PERCENT_100 : "75%";
 406
 407         VerticalPanel outer = new VerticalPanel();
 408         outer.setWidth(Const.PERCENT_100);
 409         if(!bareContent) {
 410             outer.addStyleName("pithos-outer");
 411         }
 412
 413         if(!bareContent) {
 414             topPanel = new TopPanel(this, Pithos.images);
 415             topPanel.setWidth(Const.PERCENT_100);
 416             outer.add(topPanel);
 417             outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 418         }
 419
 420         messagePanel.setVisible(false);
 421         outer.add(messagePanel);
 422         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 423         outer.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
 424
 425         HorizontalPanel header = new HorizontalPanel();
 426         header.addStyleName("pithos-header");
 427         header.setWidth(contentWidth);
 428         if(bareContent) {
 429             header.addStyleName("pithos-header-noframe");
 430         }
 431         upload = new Button("Upload", new ClickHandler() {
 432             @Override
 433             public void onClick(ClickEvent event) {
 434                 if(getSelection() != null) {
 435                     new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 436                 }
 437             }
 438         });
 439         upload.addStyleName("pithos-uploadButton");
 440         header.add(upload);
 441         header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 442         header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 443
 444         toolbar = new Toolbar(this);
 445         header.add(toolbar);
 446         header.setCellHorizontalAlignment(toolbar, HasHorizontalAlignment.ALIGN_CENTER);
 447         header.setCellVerticalAlignment(toolbar, HasVerticalAlignment.ALIGN_MIDDLE);
 448
 449         HorizontalPanel folderStatistics = new HorizontalPanel();
 450         folderStatistics.addStyleName("pithos-folderStatistics");
 451         numOfFiles = new HTML();
 452         folderStatistics.add(numOfFiles);
 453         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 454         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 455         folderStatistics.add(numOfFilesLabel);
 456         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 457         header.add(folderStatistics);
 458         header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 459         header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
 460         header.setCellWidth(folderStatistics, "40px");
 461         outer.add(header);
 462         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 463         // Inner contains the various lists
 464         inner.sinkEvents(Event.ONCONTEXTMENU);
 465         inner.setWidth(Const.PERCENT_100);
 466
 467         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 468         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 469             @Override
 470             public void onSelectionChange(SelectionChangeEvent event) {
 471                 if(folderTreeSelectionModel.getSelectedObject() != null) {
 472                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 473                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 474                     Folder f = folderTreeSelectionModel.getSelectedObject();
 475                     updateFolder(f, true, new Command() {
 476
 477                         @Override
 478                         public void execute() {
 479                             updateStatistics();
 480                         }
 481                     }, true);
 482                     showRelevantToolbarButtons();
 483                 }
 484                 else {
 485                     if(getSelectedTree().equals(folderTreeView)) {
 486                         setSelectedTree(null);
 487                     }
 488                     if(getSelectedTree() == null) {
 489                         showRelevantToolbarButtons();
 490                     }
 491                 }
 492             }
 493         });
 494         selectionModels.add(folderTreeSelectionModel);
 495
 496         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 497         folderTreeView = new FolderTreeView(folderTreeViewModel);
 498         treeViews.add(folderTreeView);
 499
 500         fileList = new FileList(this, images);
 501         inner.add(fileList);
 502
 503         trees = new VerticalPanel();
 504         trees.setWidth(Const.PERCENT_100);
 505
 506         // Add the left and right panels to the split panel.
 507         splitPanel.setLeftWidget(trees);
 508         FlowPanel right = new FlowPanel();
 509         right.getElement().setId("rightPanel");
 510         right.add(inner);
 511         splitPanel.setRightWidget(right);
 512         splitPanel.setSplitPosition("219px");
 513         splitPanel.setSize(Const.PERCENT_100, Const.PERCENT_100);
 514         splitPanel.addStyleName("pithos-splitPanel");
 515         splitPanel.setWidth(contentWidth);
 516         outer.add(splitPanel);
 517         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 518
 519         if(!bareContent) {
 520             statusPanel = new StatusPanel();
 521             statusPanel.setWidth(Const.PERCENT_100);
 522             outer.add(statusPanel);
 523             outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 524         }
 525         else {
 526             splitPanel.addStyleName("pithos-splitPanel-noframe");
 527         }
 528
 529         // Hook the window resize event, so that we can adjust the UI.
 530         Window.addResizeHandler(this);
 531         // Clear out the window's built-in margin, because we want to take
 532         // advantage of the entire client area.
 533         Window.setMargin("0px");
 534         // Finally, add the outer panel to the RootPanel, so that it will be
 535         // displayed.
 536         RootPanel.get().add(outer);
 537         // Call the window resized handler to get the initial sizes setup. Doing
 538         // this in a deferred command causes it to occur after all widgets'
 539         // sizes have been computed by the browser.
 540         Scheduler.get().scheduleIncremental(new RepeatingCommand() {
 541
 542             @Override
 543             public boolean execute() {
 544                 if(!isCloudbarReady()) {
 545                     return true;
 546                 }
 547                 onWindowResized(Window.getClientHeight());
 548                 return false;
 549             }
 550         });
 551
 552         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 553             @Override
 554             public void execute() {
 555                 LOG("Pithos::initialize() Calling Pithos::fetchAccount()");
 556                 fetchAccount(new Command() {
 557
 558                     @Override
 559                     public void execute() {
 560                         if(!account.hasHomeContainer()) {
 561                             createHomeContainer(account, this);
 562                         }
 563                         else if(!account.hasTrashContainer()) {
 564                             createTrashContainer(this);
 565                         }
 566                         else {
 567                             for(Folder f : account.getContainers()) {
 568                                 if(f.getName().equals(Const.TRASH_CONTAINER)) {
 569                                     trash = f;
 570                                     break;
 571                                 }
 572                             }
 573                             trees.add(folderTreeView);
 574                             folderTreeViewModel.initialize(account, new Command() {
 575
 576                                 @Override
 577                                 public void execute() {
 578                                     createMySharedTree();
 579                                 }
 580                             });
 581
 582                             HorizontalPanel separator = new HorizontalPanel();
 583                             separator.addStyleName("pithos-statisticsSeparator");
 584                             separator.add(new HTML(""));
 585                             trees.add(separator);
 586
 587                             groupTreeViewModel = new GroupTreeViewModel(Pithos.this);
 588                             groupTreeView = new GroupTreeView(groupTreeViewModel);
 589                             treeViews.add(groupTreeView);
 590                             trees.add(groupTreeView);
 591                             folderTreeView.showStatistics(account);
 592                         }
 593                     }
 594                 });
 595             }
 596         });
 597     }
 598
 599     public void scheduleResfresh() {
 600         Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
 601
 602             @Override
 603             public boolean execute() {
 604                 final Folder f = getSelection();
 605                 if(f == null) {
 606                     return true;
 607                 }
 608
 609                 HeadRequest<Folder> head = new HeadRequest<Folder>(Folder.class, getApiPath(), f.getOwnerID(), "/" + f.getContainer()) {
 610
 611                     @Override
 612                     public void onSuccess(Folder _result) {
 613                         lastModified = new Date();
 614                         if(getSelectedTree().equals(folderTreeView)) {
 615                             updateFolder(f, true, new Command() {
 616
 617                                 @Override
 618                                 public void execute() {
 619                                     scheduleResfresh();
 620                                 }
 621
 622                             }, false);
 623                         }
 624                         else if(getSelectedTree().equals(mysharedTreeView)) {
 625                             updateSharedFolder(f, true, new Command() {
 626
 627                                 @Override
 628                                 public void execute() {
 629                                     scheduleResfresh();
 630                                 }
 631                             });
 632                         }
 633                         else {
 634                             scheduleResfresh();
 635                         }
 636                     }
 637
 638                     @Override
 639                     public void onError(Throwable t) {
 640                         if(t instanceof RestException && ((RestException) t).getHttpStatusCode() == HttpStatus.SC_NOT_MODIFIED) {
 641                             scheduleResfresh();
 642                         }
 643                         else if(retries >= MAX_RETRIES) {
 644                             LOG("Error heading folder. ", t);
 645                             setError(t);
 646                             if(t instanceof RestException) {
 647                                 displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
 648                             }
 649                             else {
 650                                 displayError("System error heading folder: " + t.getMessage());
 651                             }
 652                         }
 653                         else {//retry
 654                             LOG("Retry ", retries);
 655                             Scheduler.get().scheduleDeferred(this);
 656                         }
 657                     }
 658
 659                     @Override
 660                     protected void onUnauthorized(Response response) {
 661                         if(retries >= MAX_RETRIES) {
 662                             sessionExpired();
 663                         }
 664                         else //retry
 665                         {
 666                             Scheduler.get().scheduleDeferred(this);
 667                         }
 668                     }
 669                 };
 670                 head.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 671                 head.setHeader(Const.IF_MODIFIED_SINCE, DateTimeFormat.getFormat(Const.DATE_FORMAT_1).format(lastModified, TimeZone.createTimeZone(0)) + " GMT");
 672                 Scheduler.get().scheduleDeferred(head);
 673
 674                 return false;
 675             }
 676         }, 3000);
 677     }
 678
 679     public void applyPermissions(Folder f) {
 680         if(f != null) {
 681             if(f.isInTrash()) {
 682                 upload.setEnabled(false);
 683                 disableUploadArea();
 684             }
 685             else {
 686                 Boolean[] perms = f.getPermissions().get(userID);
 687                 if(f.getOwnerID().equals(userID) || (perms != null && perms[1] != null && perms[1])) {
 688                     upload.setEnabled(true);
 689                     enableUploadArea();
 690                 }
 691                 else {
 692                     upload.setEnabled(false);
 693                     disableUploadArea();
 694                 }
 695             }
 696         }
 697         else {
 698             upload.setEnabled(false);
 699             disableUploadArea();
 700         }
 701     }
 702
 703     @SuppressWarnings({"rawtypes", "unchecked"})
 704     public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 705         selectedTree = _selectedTree;
 706
 707         for(SingleSelectionModel s : selectionModels) {
 708             if(!s.equals(model) && s.getSelectedObject() != null) {
 709                 s.setSelected(s.getSelectedObject(), false);
 710             }
 711         }
 712     }
 713
 714     public void showFiles(final Folder f) {
 715         Set<File> files = f.getFiles();
 716         showFiles(files);
 717     }
 718
 719     public void showFiles(Set<File> files) {
 720         fileList.setFiles(new ArrayList<File>(files));
 721     }
 722
 723     /**
 724      * Parse and store the user credentials to the appropriate fields.
 725      */
 726     private boolean parseUserCredentials() {
 727         Configuration conf = (Configuration) GWT.create(Configuration.class);
 728         Dictionary otherProperties = Dictionary.getDictionary(Const.OTHER_PROPERTIES);
 729         String cookie = otherProperties.get(Const.AUTH_COOKIE);
 730         String auth = Cookies.getCookie(cookie);
 731         if(auth == null) {
 732             authenticateUser();
 733             return false;
 734         }
 735         if(auth.startsWith("\"")) {
 736             auth = auth.substring(1);
 737         }
 738         if(auth.endsWith("\"")) {
 739             auth = auth.substring(0, auth.length() - 1);
 740         }
 741         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 742         if(authSplit.length != 2) {
 743             authenticateUser();
 744             return false;
 745         }
 746         userID = authSplit[0];
 747         userToken = authSplit[1];
 748
 749         String gotoUrl = Window.Location.getParameter("goto");
 750         if(gotoUrl != null && gotoUrl.length() > 0) {
 751             Window.Location.assign(gotoUrl);
 752             return false;
 753         }
 754         return true;
 755     }
 756
 757     /**
 758      * Redirect the user to the login page for authentication.
 759      */
 760     protected void authenticateUser() {
 761         Dictionary otherProperties = Dictionary.getDictionary(Const.OTHER_PROPERTIES);
 762         Window.Location.assign(otherProperties.get(Const.LOGIN_URL) + Window.Location.getHref());
 763     }
 764
 765     public void fetchAccount(final Command callback) {
 766         String path = "?format=json";
 767
 768         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), userID, path) {
 769             @Override
 770             public void onSuccess(AccountResource accountResource) {
 771                 account = accountResource;
 772                 if(callback != null) {
 773                     callback.execute();
 774                 }
 775
 776                 final List<String> memberIDs = new ArrayList<String>();
 777                 final List<Group> groups = account.getGroups();
 778                 for(Group group : groups) {
 779                     memberIDs.addAll(group.getMemberIDs());
 780                 }
 781                 memberIDs.add(Pithos.this.getUserID());
 782
 783                 final List<String> theUnknown = Pithos.this.filterUserIDsWithUnknownDisplayName(memberIDs);
 784                 // Initialize the user catalog
 785                 new UpdateUserCatalogs(Pithos.this, theUnknown).scheduleDeferred();
 786                 LOG("Called new UpdateUserCatalogs(Pithos.this, theUnknown).scheduleDeferred();");
 787             }
 788
 789             @Override
 790             public void onError(Throwable t) {
 791                 LOG("Error getting account", t);
 792                 setError(t);
 793                 if(t instanceof RestException) {
 794                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 795                 }
 796                 else {
 797                     displayError("System error fetching user data: " + t.getMessage());
 798                 }
 799             }
 800
 801             @Override
 802             protected void onUnauthorized(Response response) {
 803                 sessionExpired();
 804             }
 805         };
 806         getAccount.setHeader(Const.X_AUTH_TOKEN, userToken);
 807         Scheduler.get().scheduleDeferred(getAccount);
 808     }
 809
 810     public void updateStatistics() {
 811         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), userID, "", account) {
 812
 813             @Override
 814             public void onSuccess(AccountResource _result) {
 815                 folderTreeView.showStatistics(account);
 816             }
 817
 818             @Override
 819             public void onError(Throwable t) {
 820                 LOG("Error getting account", t);
 821                 setError(t);
 822                 if(t instanceof RestException) {
 823                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 824                 }
 825                 else {
 826                     displayError("System error fetching user data: " + t.getMessage());
 827                 }
 828             }
 829
 830             @Override
 831             protected void onUnauthorized(Response response) {
 832                 sessionExpired();
 833             }
 834         };
 835         headAccount.setHeader(Const.X_AUTH_TOKEN, userToken);
 836         Scheduler.get().scheduleDeferred(headAccount);
 837     }
 838
 839     protected void createHomeContainer(final AccountResource _account, final Command callback) {
 840         String path = "/" + Const.HOME_CONTAINER;
 841         PutRequest createPithos = new PutRequest(getApiPath(), getUserID(), path) {
 842             @Override
 843             public void onSuccess(Resource result) {
 844                 if(!_account.hasTrashContainer()) {
 845                     createTrashContainer(callback);
 846                 }
 847                 else {
 848                     fetchAccount(callback);
 849                 }
 850             }
 851
 852             @Override
 853             public void onError(Throwable t) {
 854                 LOG("Error creating pithos", t);
 855                 setError(t);
 856                 if(t instanceof RestException) {
 857                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 858                 }
 859                 else {
 860                     displayError("System error Error creating pithos: " + t.getMessage());
 861                 }
 862             }
 863
 864             @Override
 865             protected void onUnauthorized(Response response) {
 866                 sessionExpired();
 867             }
 868         };
 869         createPithos.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 870         Scheduler.get().scheduleDeferred(createPithos);
 871     }
 872
 873     protected void createTrashContainer(final Command callback) {
 874         String path = "/" + Const.TRASH_CONTAINER;
 875         PutRequest createPithos = new PutRequest(getApiPath(), getUserID(), path) {
 876             @Override
 877             public void onSuccess(Resource result) {
 878                 fetchAccount(callback);
 879             }
 880
 881             @Override
 882             public void onError(Throwable t) {
 883                 LOG("Error creating pithos", t);
 884                 setError(t);
 885                 if(t instanceof RestException) {
 886                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 887                 }
 888                 else {
 889                     displayError("System error Error creating pithos: " + t.getMessage());
 890                 }
 891             }
 892
 893             @Override
 894             protected void onUnauthorized(Response response) {
 895                 sessionExpired();
 896             }
 897         };
 898         createPithos.setHeader(Const.X_AUTH_TOKEN, getUserToken());
 899         Scheduler.get().scheduleDeferred(createPithos);
 900     }
 901
 902     /**
 903      * Creates an HTML fragment that places an image & caption together, for use
 904      * in a group header.
 905      *
 906      * @param imageProto an image prototype for an image
 907      * @param caption    the group caption
 908      * @return the header HTML fragment
 909      */
 910     private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 911         String captionHTML = "<table class='caption' cellpadding='0' "
 912             + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 913             + "</td><td id =" + caption + " class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 914             + caption + "</b></td></tr></table>";
 915         return captionHTML;
 916     }
 917
 918     protected void onWindowResized(int height) {
 919         // Adjust the split panel to take up the available room in the window.
 920         int newHeight = height - splitPanel.getAbsoluteTop() - 153;
 921         if(newHeight < 1) {
 922             newHeight = 1;
 923         }
 924         splitPanel.setHeight("" + newHeight);
 925         inner.setHeight("" + newHeight);
 926     }
 927
 928     native boolean isCloudbarReady()/*-{
 929       if ($wnd.$("div.cloudbar") && $wnd.$("div.cloudbar").height() > 0)
 930         return true;
 931       return false;
 932     }-*/;
 933
 934     @Override
 935     public void onResize(ResizeEvent event) {
 936         int height = event.getHeight();
 937         onWindowResized(height);
 938     }
 939
 940     /**
 941      * Display an error message.
 942      *
 943      * @param msg the message to display
 944      */
 945     public void displayError(String msg) {
 946         messagePanel.displayError(msg);
 947         onWindowResized(Window.getClientHeight());
 948     }
 949
 950     /**
 951      * Display a warning message.
 952      *
 953      * @param msg the message to display
 954      */
 955     public void displayWarning(String msg) {
 956         messagePanel.displayWarning(msg);
 957         onWindowResized(Window.getClientHeight());
 958     }
 959
 960     /**
 961      * Display an informational message.
 962      *
 963      * @param msg the message to display
 964      */
 965     public void displayInformation(String msg) {
 966         messagePanel.displayInformation(msg);
 967         onWindowResized(Window.getClientHeight());
 968     }
 969
 970     /**
 971      * Retrieve the fileList.
 972      *
 973      * @return the fileList
 974      */
 975     public FileList getFileList() {
 976         return fileList;
 977     }
 978
 979     /**
 980      * Retrieve the topPanel.
 981      *
 982      * @return the topPanel
 983      */
 984     TopPanel getTopPanel() {
 985         return topPanel;
 986     }
 987
 988     /**
 989      * Retrieve the clipboard.
 990      *
 991      * @return the clipboard
 992      */
 993     public Clipboard getClipboard() {
 994         return clipboard;
 995     }
 996
 997     public StatusPanel getStatusPanel() {
 998         return statusPanel;
 999     }
1000
1001     public String getUserToken() {
1002         return userToken;
1003     }
1004
1005     public static native void preventIESelection() /*-{
1006       $doc.body.onselectstart = function () {
1007         return false;
1008       };
1009     }-*/;
1010
1011     public static native void enableIESelection() /*-{
1012       if ($doc.body.onselectstart != null)
1013         $doc.body.onselectstart = null;
1014     }-*/;
1015
1016     /**
1017      * @return the absolute path of the API root URL
1018      */
1019     public String getApiPath() {
1020         Configuration conf = (Configuration) GWT.create(Configuration.class);
1021         return conf.apiPath();
1022     }
1023
1024     /**
1025      * History support for folder navigation
1026      * adds a new browser history entry
1027      *
1028      * @param key
1029      */
1030     public void updateHistory(String key) {
1031 //              Replace any whitespace of the initial string to "+"
1032 //              String result = key.replaceAll("\\s","+");
1033 //              Add a new browser history entry.
1034 //              History.newItem(result);
1035         History.newItem(key);
1036     }
1037
1038     public void deleteFolder(final Folder folder, final Command callback) {
1039         final PleaseWaitPopup pwp = new PleaseWaitPopup();
1040         pwp.center();
1041         String path = "/" + folder.getContainer() + "/" + folder.getPrefix() + "?delimiter=/" + "&t=" + System.currentTimeMillis();
1042         DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), folder.getOwnerID(), path) {
1043
1044             @Override
1045             protected void onUnauthorized(Response response) {
1046                 pwp.hide();
1047                 sessionExpired();
1048             }
1049
1050             @Override
1051             public void onSuccess(Resource result) {
1052                 updateFolder(folder.getParent(), true, new Command() {
1053
1054                     @Override
1055                     public void execute() {
1056                         folderTreeSelectionModel.setSelected(folder.getParent(), true);
1057                         updateStatistics();
1058                         if(callback != null) {
1059                             callback.execute();
1060                         }
1061                         pwp.hide();
1062                     }
1063                 }, true);
1064             }
1065
1066             @Override
1067             public void onError(Throwable t) {
1068                 LOG(t);
1069                 setError(t);
1070                 if(t instanceof RestException) {
1071                     if(((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND) {
1072                         displayError("Unable to delete folder: " + ((RestException) t).getHttpStatusText());
1073                     }
1074                     else {
1075                         onSuccess(null);
1076                     }
1077                 }
1078                 else {
1079                     displayError("System error unable to delete folder: " + t.getMessage());
1080                 }
1081                 pwp.hide();
1082             }
1083         };
1084         deleteFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1085         Scheduler.get().scheduleDeferred(deleteFolder);
1086     }
1087
1088     public FolderTreeView getFolderTreeView() {
1089         return folderTreeView;
1090     }
1091
1092     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
1093         if(iter.hasNext()) {
1094             File file = iter.next();
1095             String path = targetUri + "/" + file.getName();
1096             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
1097                 @Override
1098                 public void onSuccess(Resource result) {
1099                     copyFiles(iter, targetUsername, targetUri, callback);
1100                 }
1101
1102                 @Override
1103                 public void onError(Throwable t) {
1104                     LOG(t);
1105                     setError(t);
1106                     if(t instanceof RestException) {
1107                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
1108                     }
1109                     else {
1110                         displayError("System error unable to copy file: " + t.getMessage());
1111                     }
1112                 }
1113
1114                 @Override
1115                 protected void onUnauthorized(Response response) {
1116                     sessionExpired();
1117                 }
1118             };
1119             copyFile.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1120             copyFile.setHeader(Const.X_COPY_FROM, URL.encodePathSegment(file.getUri()));
1121             if(!file.getOwnerID().equals(targetUsername)) {
1122                 copyFile.setHeader(Const.X_SOURCE_ACCOUNT, URL.encodePathSegment(file.getOwnerID()));
1123             }
1124             copyFile.setHeader(Const.CONTENT_TYPE, file.getContentType());
1125             Scheduler.get().scheduleDeferred(copyFile);
1126         }
1127         else if(callback != null) {
1128             callback.execute();
1129         }
1130     }
1131
1132     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, boolean move, final Command callback) {
1133         String path = targetUri + "?delimiter=/";
1134         PutRequest copyFolder = new PutRequest(getApiPath(), targetUsername, path) {
1135             @Override
1136             public void onSuccess(Resource result) {
1137                 if(callback != null) {
1138                     callback.execute();
1139                 }
1140             }
1141
1142             @Override
1143             public void onError(Throwable t) {
1144                 LOG(t);
1145                 setError(t);
1146                 if(t instanceof RestException) {
1147                     displayError("Unable to copy folder: " + ((RestException) t).getHttpStatusText());
1148                 }
1149                 else {
1150                     displayError("System error copying folder: " + t.getMessage());
1151                 }
1152             }
1153
1154             @Override
1155             protected void onUnauthorized(Response response) {
1156                 sessionExpired();
1157             }
1158         };
1159         copyFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1160         copyFolder.setHeader(Const.ACCEPT, "*/*");
1161         copyFolder.setHeader(Const.CONTENT_LENGTH, "0");
1162         copyFolder.setHeader(Const.CONTENT_TYPE, "application/directory");
1163         if(!f.getOwnerID().equals(targetUsername)) {
1164             copyFolder.setHeader(Const.X_SOURCE_ACCOUNT, f.getOwnerID());
1165         }
1166         if(move) {
1167             copyFolder.setHeader(Const.X_MOVE_FROM, URL.encodePathSegment(f.getUri()));
1168         }
1169         else {
1170             copyFolder.setHeader(Const.X_COPY_FROM, URL.encodePathSegment(f.getUri()));
1171         }
1172         Scheduler.get().scheduleDeferred(copyFolder);
1173     }
1174
1175     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1176         selectionModels.add(model);
1177     }
1178
1179     public OtherSharedTreeView getOtherSharedTreeView() {
1180         return otherSharedTreeView;
1181     }
1182
1183     public void updateTrash(boolean showFiles, Command callback) {
1184         updateFolder(trash, showFiles, callback, true);
1185     }
1186
1187     public void updateGroupsNode() {
1188         groupTreeView.updateGroupNode(null);
1189     }
1190
1191     public Group addGroup(String groupname) {
1192         Group newGroup = new Group(groupname);
1193         account.addGroup(newGroup);
1194         groupTreeView.updateGroupNode(null);
1195         return newGroup;
1196     }
1197
1198     public void removeGroup(Group group) {
1199         account.removeGroup(group);
1200         updateGroupsNode();
1201     }
1202
1203     public TreeView getSelectedTree() {
1204         return selectedTree;
1205     }
1206
1207     public void setSelectedTree(TreeView selected) {
1208         selectedTree = selected;
1209     }
1210
1211     public Folder getSelection() {
1212         if(selectedTree != null) {
1213             return selectedTree.getSelection();
1214         }
1215         return null;
1216     }
1217
1218     public void showFolderStatistics(int folderFileCount) {
1219         numOfFiles.setHTML(String.valueOf(folderFileCount));
1220     }
1221
1222     public GroupTreeView getGroupTreeView() {
1223         return groupTreeView;
1224     }
1225
1226     public void sessionExpired() {
1227         new SessionExpiredDialog(this).center();
1228     }
1229
1230     public void updateRootFolder(Command callback) {
1231         updateFolder(account.getPithos(), false, callback, true);
1232     }
1233
1234     void createMySharedTree() {
1235         LOG("Pithos::createMySharedTree()");
1236         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1237         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1238             @Override
1239             public void onSelectionChange(SelectionChangeEvent event) {
1240                 if(mysharedTreeSelectionModel.getSelectedObject() != null) {
1241                     deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1242                     upload.setEnabled(false);
1243                     disableUploadArea();
1244                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1245                     showRelevantToolbarButtons();
1246                 }
1247                 else {
1248                     if(getSelectedTree().equals(mysharedTreeView)) {
1249                         setSelectedTree(null);
1250                     }
1251                     if(getSelectedTree() == null) {
1252                         showRelevantToolbarButtons();
1253                     }
1254                 }
1255             }
1256         });
1257         selectionModels.add(mysharedTreeSelectionModel);
1258         mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1259         mysharedTreeViewModel.initialize(new Command() {
1260
1261             @Override
1262             public void execute() {
1263                 mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1264                 trees.insert(mysharedTreeView, 2);
1265                 treeViews.add(mysharedTreeView);
1266                 createOtherSharedTree();
1267             }
1268         });
1269     }
1270
1271     void createOtherSharedTree() {
1272         LOG("Pithos::createOtherSharedTree()");
1273         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1274         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1275             @Override
1276             public void onSelectionChange(SelectionChangeEvent event) {
1277                 if(otherSharedTreeSelectionModel.getSelectedObject() != null) {
1278                     deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1279                     applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1280                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true, null);
1281                     showRelevantToolbarButtons();
1282                 }
1283                 else {
1284                     if(getSelectedTree().equals(otherSharedTreeView)) {
1285                         setSelectedTree(null);
1286                     }
1287                     if(getSelectedTree() == null) {
1288                         showRelevantToolbarButtons();
1289                     }
1290                 }
1291             }
1292         });
1293         selectionModels.add(otherSharedTreeSelectionModel);
1294         otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1295         LOG("Pithos::createOtherSharedTree(), initializing otherSharedTreeViewModel with a callback");
1296         otherSharedTreeViewModel.initialize(new Command() {
1297             @Override
1298             public void execute() {
1299                 otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1300                 trees.insert(otherSharedTreeView, 1);
1301                 treeViews.add(otherSharedTreeView);
1302                 scheduleResfresh();
1303             }
1304         });
1305     }
1306
1307     public String getErrorData() {
1308         final StringBuilder sb = new StringBuilder();
1309         final String NL = Const.NL;
1310         Throwable t = this.error;
1311         while(t != null) {
1312             sb.append(t.toString());
1313             sb.append(NL);
1314             StackTraceElement[] traces = t.getStackTrace();
1315             for(StackTraceElement trace : traces) {
1316                 sb.append("  [");
1317                 sb.append(trace.getClassName());
1318                 sb.append("::");
1319                 sb.append(trace.getMethodName());
1320                 sb.append("() at ");
1321                 sb.append(trace.getFileName());
1322                 sb.append(":");
1323                 sb.append(trace.getLineNumber());
1324                 sb.append("]");
1325                 sb.append(NL);
1326             }
1327             t = t.getCause();
1328         }
1329
1330         return sb.toString();
1331     }
1332
1333     public void setError(Throwable t) {
1334         error = t;
1335         LOG(t);
1336     }
1337
1338     public void showRelevantToolbarButtons() {
1339         toolbar.showRelevantButtons();
1340     }
1341
1342     public FileUploadDialog getFileUploadDialog() {
1343         if(fileUploadDialog == null) {
1344             fileUploadDialog = new FileUploadDialog(this);
1345         }
1346         return fileUploadDialog;
1347     }
1348
1349     public void hideUploadIndicator() {
1350         upload.removeStyleName("pithos-uploadButton-loading");
1351         upload.setTitle("");
1352     }
1353
1354     public void showUploadIndicator() {
1355         upload.addStyleName("pithos-uploadButton-loading");
1356         upload.setTitle("Upload in progress. Click for details.");
1357     }
1358
1359     public void scheduleFolderHeadCommand(final Folder folder, final Command callback) {
1360         if(folder == null) {
1361             if(callback != null) {
1362                 callback.execute();
1363             }
1364         }
1365         else {
1366             HeadRequest<Folder> headFolder = new HeadRequest<Folder>(Folder.class, getApiPath(), folder.getOwnerID(), folder.getUri(), folder) {
1367
1368                 @Override
1369                 public void onSuccess(Folder _result) {
1370                     if(callback != null) {
1371                         callback.execute();
1372                     }
1373                 }
1374
1375                 @Override
1376                 public void onError(Throwable t) {
1377                     if(t instanceof RestException) {
1378                         if(((RestException) t).getHttpStatusCode() == Response.SC_NOT_FOUND) {
1379                             final String path = folder.getUri();
1380                             PutRequest newFolder = new PutRequest(getApiPath(), folder.getOwnerID(), path) {
1381                                 @Override
1382                                 public void onSuccess(Resource _result) {
1383                                     scheduleFolderHeadCommand(folder, callback);
1384                                 }
1385
1386                                 @Override
1387                                 public void onError(Throwable _t) {
1388                                     setError(_t);
1389                                     if(_t instanceof RestException) {
1390                                         displayError("Unable to create folder: " + ((RestException) _t).getHttpStatusText());
1391                                     }
1392                                     else {
1393                                         displayError("System error creating folder: " + _t.getMessage());
1394                                     }
1395                                 }
1396
1397                                 @Override
1398                                 protected void onUnauthorized(Response response) {
1399                                     sessionExpired();
1400                                 }
1401                             };
1402                             newFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1403                             newFolder.setHeader(Const.CONTENT_TYPE, "application/folder");
1404                             newFolder.setHeader(Const.ACCEPT, "*/*");
1405                             newFolder.setHeader(Const.CONTENT_LENGTH, "0");
1406                             Scheduler.get().scheduleDeferred(newFolder);
1407                         }
1408                         else if(((RestException) t).getHttpStatusCode() == Response.SC_FORBIDDEN) {
1409                             onSuccess(folder);
1410                         }
1411                         else {
1412                             displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
1413                         }
1414                     }
1415                     else {
1416                         displayError("System error heading folder: " + t.getMessage());
1417                     }
1418
1419                     LOG("Error heading folder", t);
1420                     setError(t);
1421                 }
1422
1423                 @Override
1424                 protected void onUnauthorized(Response response) {
1425                     sessionExpired();
1426                 }
1427             };
1428             headFolder.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1429             Scheduler.get().scheduleDeferred(headFolder);
1430         }
1431     }
1432
1433     public void scheduleFileHeadCommand(File f, final Command callback) {
1434         HeadRequest<File> headFile = new HeadRequest<File>(File.class, getApiPath(), f.getOwnerID(), f.getUri(), f) {
1435
1436             @Override
1437             public void onSuccess(File _result) {
1438                 if(callback != null) {
1439                     callback.execute();
1440                 }
1441             }
1442
1443             @Override
1444             public void onError(Throwable t) {
1445                 LOG("Error heading file", t);
1446                 setError(t);
1447                 if(t instanceof RestException) {
1448                     displayError("Error heading file: " + ((RestException) t).getHttpStatusText());
1449                 }
1450                 else {
1451                     displayError("System error heading file: " + t.getMessage());
1452                 }
1453             }
1454
1455             @Override
1456             protected void onUnauthorized(Response response) {
1457                 sessionExpired();
1458             }
1459         };
1460         headFile.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1461         Scheduler.get().scheduleDeferred(headFile);
1462     }
1463
1464     public boolean isMySharedSelected() {
1465         return getSelectedTree().equals(getMySharedTreeView());
1466     }
1467
1468     private Folder getUploadFolder() {
1469         if(folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1470             return getSelection();
1471         }
1472         return null;
1473     }
1474
1475     private void updateUploadFolder() {
1476         updateUploadFolder(null);
1477     }
1478
1479     private void updateUploadFolder(final JsArrayString urls) {
1480         if(folderTreeView.equals(getSelectedTree()) || otherSharedTreeView.equals(getSelectedTree())) {
1481             Folder f = getSelection();
1482             if(getSelectedTree().equals(getFolderTreeView())) {
1483                 updateFolder(f, true, new Command() {
1484
1485                     @Override
1486                     public void execute() {
1487                         updateStatistics();
1488                         if(urls != null) {
1489                             selectUploadedFiles(urls);
1490                         }
1491                     }
1492                 }, false);
1493             }
1494             else {
1495                 updateOtherSharedFolder(f, true, null);
1496             }
1497         }
1498     }
1499
1500     public native void disableUploadArea() /*-{
1501       var uploader = $wnd.$("#uploader").pluploadQueue();
1502       var dropElm = $wnd.document.getElementById('rightPanel');
1503       $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1504     }-*/;
1505
1506     public native void enableUploadArea() /*-{
1507       var uploader = $wnd.$("#uploader").pluploadQueue();
1508       var dropElm = $wnd.document.getElementById('rightPanel');
1509       $wnd.plupload.removeAllEvents(dropElm, uploader.id);
1510       if (uploader.runtime == 'html5') {
1511         uploader.settings.drop_element = 'rightPanel';
1512         uploader.trigger('PostInit');
1513       }
1514     }-*/;
1515
1516     public void showUploadAlert(int nOfFiles) {
1517         if(uploadAlert == null) {
1518             uploadAlert = new UploadAlert(this, nOfFiles);
1519         }
1520         if(!uploadAlert.isShowing()) {
1521             uploadAlert.setPopupPositionAndShow(new PopupPanel.PositionCallback() {
1522
1523                 @Override
1524                 public void setPosition(int offsetWidth, int offsetHeight) {
1525                     uploadAlert.setPopupPosition((Window.getClientWidth() - offsetWidth) / 2, statusPanel.getAbsoluteTop() - offsetHeight);
1526                 }
1527             });
1528         }
1529         uploadAlert.setNumOfFiles(nOfFiles);
1530     }
1531
1532     public void hideUploadAlert() {
1533         if(uploadAlert != null && uploadAlert.isShowing()) {
1534             uploadAlert.hide();
1535         }
1536     }
1537
1538     public void selectUploadedFiles(JsArrayString urls) {
1539         List<String> selectedUrls = new ArrayList<String>();
1540         for(int i = 0; i < urls.length(); i++) {
1541             selectedUrls.add(urls.get(i));
1542         }
1543         fileList.selectByUrl(selectedUrls);
1544     }
1545
1546     public void purgeContainer(final Folder container) {
1547         String path = "/" + container.getName() + "?delimiter=/";
1548         DeleteRequest delete = new DeleteRequest(getApiPath(), getUserID(), path) {
1549
1550             @Override
1551             protected void onUnauthorized(Response response) {
1552                 sessionExpired();
1553             }
1554
1555             @Override
1556             public void onSuccess(Resource result) {
1557                 updateFolder(container, true, null, true);
1558             }
1559
1560             @Override
1561             public void onError(Throwable t) {
1562                 LOG("Error deleting trash", t);
1563                 setError(t);
1564                 if(t instanceof RestException) {
1565                     displayError("Error deleting trash: " + ((RestException) t).getHttpStatusText());
1566                 }
1567                 else {
1568                     displayError("System error deleting trash: " + t.getMessage());
1569                 }
1570             }
1571         };
1572         delete.setHeader(Const.X_AUTH_TOKEN, getUserToken());
1573         Scheduler.get().scheduleDeferred(delete);
1574     }
1575 }