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

   1 /*
   2  * Copyright 2011 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 gr.grnet.pithos.web.client.commands.UploadFileCommand;
  38 import gr.grnet.pithos.web.client.foldertree.AccountResource;
  39 import gr.grnet.pithos.web.client.foldertree.File;
  40 import gr.grnet.pithos.web.client.foldertree.Folder;
  41 import gr.grnet.pithos.web.client.foldertree.FolderTreeView;
  42 import gr.grnet.pithos.web.client.foldertree.FolderTreeViewModel;
  43 import gr.grnet.pithos.web.client.foldertree.Resource;
  44 import gr.grnet.pithos.web.client.grouptree.Group;
  45 import gr.grnet.pithos.web.client.grouptree.GroupTreeView;
  46 import gr.grnet.pithos.web.client.grouptree.GroupTreeViewModel;
  47 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView;
  48 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeViewModel;
  49 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView;
  50 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeViewModel;
  51 import gr.grnet.pithos.web.client.rest.DeleteRequest;
  52 import gr.grnet.pithos.web.client.rest.GetRequest;
  53 import gr.grnet.pithos.web.client.rest.HeadRequest;
  54 import gr.grnet.pithos.web.client.rest.PutRequest;
  55 import gr.grnet.pithos.web.client.rest.RestException;
  56 import gr.grnet.pithos.web.client.tagtree.Tag;
  57 import gr.grnet.pithos.web.client.tagtree.TagTreeView;
  58 import gr.grnet.pithos.web.client.tagtree.TagTreeViewModel;
  59
  60 import java.util.ArrayList;
  61 import java.util.HashMap;
  62 import java.util.Iterator;
  63 import java.util.List;
  64 import java.util.Set;
  65
  66 import com.google.gwt.core.client.EntryPoint;
  67 import com.google.gwt.core.client.GWT;
  68 import com.google.gwt.core.client.Scheduler;
  69 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  70 import com.google.gwt.event.dom.client.ClickEvent;
  71 import com.google.gwt.event.dom.client.ClickHandler;
  72 import com.google.gwt.event.logical.shared.ResizeEvent;
  73 import com.google.gwt.event.logical.shared.ResizeHandler;
  74 import com.google.gwt.http.client.Request;
  75 import com.google.gwt.http.client.RequestBuilder;
  76 import com.google.gwt.http.client.RequestCallback;
  77 import com.google.gwt.http.client.RequestException;
  78 import com.google.gwt.http.client.Response;
  79 import com.google.gwt.http.client.URL;
  80 import com.google.gwt.i18n.client.NumberFormat;
  81 import com.google.gwt.json.client.JSONArray;
  82 import com.google.gwt.json.client.JSONObject;
  83 import com.google.gwt.json.client.JSONParser;
  84 import com.google.gwt.json.client.JSONString;
  85 import com.google.gwt.json.client.JSONValue;
  86 import com.google.gwt.resources.client.ImageResource;
  87 import com.google.gwt.user.client.Command;
  88 import com.google.gwt.user.client.Cookies;
  89 import com.google.gwt.user.client.Event;
  90 import com.google.gwt.user.client.History;
  91 import com.google.gwt.user.client.Window;
  92 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  93 import com.google.gwt.user.client.ui.Button;
  94 import com.google.gwt.user.client.ui.Composite;
  95 import com.google.gwt.user.client.ui.HTML;
  96 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  97 import com.google.gwt.user.client.ui.HasVerticalAlignment;
  98 import com.google.gwt.user.client.ui.HorizontalPanel;
  99 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
 100 import com.google.gwt.user.client.ui.RootPanel;
 101 import com.google.gwt.user.client.ui.VerticalPanel;
 102 import com.google.gwt.view.client.SelectionChangeEvent;
 103 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
 104 import com.google.gwt.view.client.SingleSelectionModel;
 105
 106 /**
 107  * Entry point classes define <code>onModuleLoad()</code>.
 108  */
 109 public class Pithos implements EntryPoint, ResizeHandler {
 110
 111         public static final String HOME_CONTAINER = "pithos";
 112
 113         public static final String TRASH_CONTAINER = "trash";
 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 getUsername() {
 122         return username;
 123     }
 124
 125     public void setAccount(AccountResource acct) {
 126         account = acct;
 127     }
 128
 129     public AccountResource getAccount() {
 130         return account;
 131     }
 132
 133     public void updateFolder(Folder f, boolean showfiles, Command callback) {
 134         folderTreeView.updateFolder(f, showfiles, callback);
 135     }
 136
 137     public void updateGroupNode(Group group) {
 138         groupTreeView.updateGroupNode(group);
 139     }
 140
 141     public void updateSharedFolder(Folder f, boolean showfiles) {
 142         mysharedTreeView.updateFolder(f, showfiles);
 143     }
 144
 145     public void updateOtherSharedFolder(Folder f, boolean showfiles) {
 146         otherSharedTreeView.updateFolder(f, showfiles);
 147     }
 148
 149     public List<Tag> getAllTags() {
 150         List<Tag> tagList = new ArrayList<Tag>();
 151         for (Folder f : account.getContainers()) {
 152             for (String t : f.getTags()) {
 153                 tagList.add(new Tag(t));
 154             }
 155         }
 156         return tagList;
 157     }
 158
 159     public MysharedTreeView getMySharedTreeView() {
 160         return mysharedTreeView;
 161     }
 162
 163     /**
 164          * An aggregate image bundle that pulls together all the images for this
 165          * application into a single bundle.
 166          */
 167         public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 168
 169                 @Source("gr/grnet/pithos/resources/document.png")
 170                 ImageResource folders();
 171
 172                 @Source("gr/grnet/pithos/resources/advancedsettings.png")
 173                 ImageResource tools();
 174         }
 175
 176         /**
 177          * The Application Clipboard implementation;
 178          */
 179         private Clipboard clipboard = new Clipboard();
 180
 181         /**
 182          * The top panel that contains the menu bar.
 183          */
 184         private TopPanel topPanel;
 185
 186         /**
 187          * The panel that contains the various system messages.
 188          */
 189         private MessagePanel messagePanel = new MessagePanel(Pithos.images);
 190
 191         /**
 192          * The bottom panel that contains the status bar.
 193          */
 194         private StatusPanel statusPanel = null;
 195
 196         /**
 197          * The file list widget.
 198          */
 199         private FileList fileList;
 200
 201         /**
 202          * The tab panel that occupies the right side of the screen.
 203          */
 204         private VerticalPanel inner = new VerticalPanel();
 205
 206
 207         /**
 208          * The split panel that will contain the left and right panels.
 209          */
 210         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 211
 212         /**
 213          * The currently selected item in the application, for use by the Edit menu
 214          * commands. Potential types are Folder, File, User and Group.
 215          */
 216         private Object currentSelection;
 217
 218         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 219
 220     private String username = null;
 221
 222     /**
 223      * The authentication token of the current user.
 224      */
 225     private String token;
 226
 227     VerticalPanel trees;
 228
 229     SingleSelectionModel<Folder> folderTreeSelectionModel;
 230     FolderTreeViewModel folderTreeViewModel;
 231     FolderTreeView folderTreeView;
 232
 233     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 234     MysharedTreeViewModel mysharedTreeViewModel;
 235     MysharedTreeView mysharedTreeView = null;;
 236
 237     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 238     OtherSharedTreeViewModel otherSharedTreeViewModel;
 239     OtherSharedTreeView otherSharedTreeView = null;
 240
 241     GroupTreeViewModel groupTreeViewModel;
 242     private GroupTreeView groupTreeView;
 243
 244     private TreeView selectedTree;
 245     protected AccountResource account;
 246
 247     Folder trash;
 248
 249     List<Composite> treeViews = new ArrayList<Composite>();
 250
 251     @SuppressWarnings("rawtypes") List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 252
 253     Button upload;
 254
 255     private HTML totalFiles;
 256
 257     private HTML usedBytes;
 258
 259     private HTML totalBytes;
 260
 261     private HTML usedPercent;
 262
 263     private HTML numOfFiles;
 264
 265     private Button toolsButton;
 266
 267         @Override
 268         public void onModuleLoad() {
 269                 if (parseUserCredentials())
 270             initialize();
 271         }
 272
 273     private void initialize() {
 274         boolean bareContent = Window.Location.getParameter("noframe") != null;
 275         String contentWidth = bareContent ? "100%" : "75%";
 276
 277         VerticalPanel outer = new VerticalPanel();
 278         outer.setWidth("100%");
 279         if (!bareContent) {
 280                 outer.addStyleName("pithos-outer");
 281         }
 282
 283         if (!bareContent) {
 284                 topPanel = new TopPanel(this, Pithos.images);
 285                 topPanel.setWidth("100%");
 286                 outer.add(topPanel);
 287                 outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 288         }
 289
 290         HorizontalPanel header = new HorizontalPanel();
 291         header.addStyleName("pithos-header");
 292         header.setWidth(contentWidth);
 293         if (bareContent)
 294                 header.addStyleName("pithos-header-noframe");
 295         upload = new Button("Upload File", new ClickHandler() {
 296             @Override
 297             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 298                 new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 299             }
 300         });
 301         upload.addStyleName("pithos-uploadButton");
 302         header.add(upload);
 303         header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 304         header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 305         header.setCellWidth(upload, "146px");
 306
 307         messagePanel.setVisible(false);
 308         header.add(messagePanel);
 309         header.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 310         header.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
 311
 312
 313         toolsButton = new Button(AbstractImagePrototype.create(images.tools()).getHTML());
 314         toolsButton.addClickHandler(new ClickHandler() {
 315
 316                         @Override
 317                         public void onClick(ClickEvent event) {
 318                 ToolsMenu menu = new ToolsMenu(Pithos.this, images, getSelectedTree(), getSelectedTree().getSelection(), getFileList().getSelectedFiles());
 319                 if (!menu.isEmpty()) {
 320                             menu.setPopupPosition(event.getClientX(), event.getClientY());
 321                             menu.show();
 322                 }
 323                         }
 324                 });
 325         header.add(toolsButton);
 326         header.setCellHorizontalAlignment(toolsButton, HasHorizontalAlignment.ALIGN_RIGHT);
 327         header.setCellVerticalAlignment(toolsButton, HasVerticalAlignment.ALIGN_MIDDLE);
 328         header.setCellWidth(toolsButton, "30px");
 329
 330         HorizontalPanel folderStatistics = new HorizontalPanel();
 331         folderStatistics.addStyleName("pithos-folderStatistics");
 332         numOfFiles = new HTML();
 333         folderStatistics.add(numOfFiles);
 334         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 335         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 336         folderStatistics.add(numOfFilesLabel);
 337         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 338         header.add(folderStatistics);
 339         header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 340         header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
 341         header.setCellWidth(folderStatistics, "60px");
 342         outer.add(header);
 343         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 344         // Inner contains the various lists.nner
 345         inner.sinkEvents(Event.ONCONTEXTMENU);
 346         inner.setWidth("100%");
 347
 348         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 349         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 350             @Override
 351             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 352                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 353                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 354                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 355                     Folder f = folderTreeSelectionModel.getSelectedObject();
 356                     showFiles(f);
 357                 }
 358             }
 359         });
 360         selectionModels.add(folderTreeSelectionModel);
 361
 362         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 363         folderTreeView = new FolderTreeView(folderTreeViewModel);
 364         treeViews.add(folderTreeView);
 365
 366         fileList = new FileList(this, images, folderTreeView);
 367         inner.add(fileList);
 368
 369         groupTreeViewModel = new GroupTreeViewModel(this);
 370         groupTreeView = new GroupTreeView(groupTreeViewModel);
 371         treeViews.add(groupTreeView);
 372
 373         trees = new VerticalPanel();
 374         trees.setWidth("100%");
 375
 376
 377         HorizontalPanel treeHeader = new HorizontalPanel();
 378         treeHeader.addStyleName("pithos-treeHeader");
 379         treeHeader.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);
 380         treeHeader.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
 381         HorizontalPanel statistics = new HorizontalPanel();
 382         statistics.addStyleName("pithos-statistics");
 383         statistics.add(new HTML("Total Objects:&nbsp;"));
 384         totalFiles = new HTML();
 385         statistics.add(totalFiles);
 386         statistics.add(new HTML("&nbsp;|&nbsp;Used:&nbsp;"));
 387         usedBytes = new HTML();
 388         statistics.add(usedBytes);
 389         statistics.add(new HTML("&nbsp;of&nbsp;"));
 390         totalBytes = new HTML();
 391         statistics.add(totalBytes);
 392         statistics.add(new HTML("&nbsp;("));
 393         usedPercent = new HTML();
 394         statistics.add(usedPercent);
 395         statistics.add(new HTML(")"));
 396         treeHeader.add(statistics);
 397         treeHeader.setCellHorizontalAlignment(statistics, HasHorizontalAlignment.ALIGN_LEFT);
 398         trees.add(treeHeader);
 399
 400         trees.add(folderTreeView);
 401         trees.add(groupTreeView);
 402         // Add the left and right panels to the split panel.
 403         splitPanel.setLeftWidget(trees);
 404         splitPanel.setRightWidget(inner);
 405         splitPanel.setSplitPosition("35%");
 406         splitPanel.setSize("100%", "100%");
 407         splitPanel.addStyleName("pithos-splitPanel");
 408         splitPanel.setWidth(contentWidth);
 409         outer.add(splitPanel);
 410         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 411
 412         if (!bareContent) {
 413                 statusPanel = new StatusPanel();
 414                 statusPanel.setWidth("100%");
 415                 outer.add(statusPanel);
 416                 outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 417         }
 418         else
 419                 splitPanel.addStyleName("pithos-splitPanel-noframe");
 420
 421         // Hook the window resize event, so that we can adjust the UI.
 422         Window.addResizeHandler(this);
 423         // Clear out the window's built-in margin, because we want to take
 424         // advantage of the entire client area.
 425         Window.setMargin("0px");
 426         // Finally, add the outer panel to the RootPanel, so that it will be
 427         // displayed.
 428         RootPanel.get().add(outer);
 429         // Call the window resized handler to get the initial sizes setup. Doing
 430         // this in a deferred command causes it to occur after all widgets'
 431         // sizes have been computed by the browser.
 432         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 433
 434             @Override
 435             public void execute() {
 436                 onWindowResized(Window.getClientHeight());
 437             }
 438         });
 439
 440         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 441             @Override
 442             public void execute() {
 443                 fetchAccount(new Command() {
 444
 445                                         @Override
 446                                         public void execute() {
 447                                 if (!account.hasHomeContainer())
 448                                     createHomeContainer(account, this);
 449                                 else if (!account.hasTrashContainer())
 450                                         createTrashContainer(this);
 451                                 else {
 452                                         for (Folder f : account.getContainers())
 453                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 454                                                         trash = f;
 455                                                         break;
 456                                                 }
 457                                     folderTreeViewModel.initialize(account, new Command() {
 458
 459                                                                 @Override
 460                                                                 public void execute() {
 461                                                     createMySharedTree();
 462                                                                 }
 463                                                         });
 464                                     groupTreeViewModel.initialize();
 465                                     showStatistics();
 466                                 }
 467                                         }
 468                                 });
 469             }
 470         });
 471
 472 //        Scheduler.get().scheduleDeferred(new Command() {
 473 //
 474 //                      @Override
 475 //                      public void execute() {
 476 //                              displayError("lalala");
 477 //
 478 //                      }
 479 //              });
 480     }
 481
 482     public void applyPermissions(Folder f) {
 483         if (f != null) {
 484                 if (f.isInTrash())
 485                         upload.setEnabled(false);
 486                 else {
 487                         Boolean[] perms = f.getPermissions().get(username);
 488                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 489                                 upload.setEnabled(true);
 490                         }
 491                         else
 492                                 upload.setEnabled(false);
 493                 }
 494         }
 495         else
 496                 upload.setEnabled(false);
 497         }
 498
 499         @SuppressWarnings({ "rawtypes", "unchecked" })
 500         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 501         selectedTree = _selectedTree;
 502
 503         for (Composite c : treeViews)
 504                 if (c.equals(selectedTree))
 505                         c.addStyleName("cellTreeWidget-selectedTree");
 506                 else
 507                         c.removeStyleName("cellTreeWidget-selectedTree");
 508
 509         for (SingleSelectionModel s : selectionModels)
 510             if (!s.equals(model))
 511                 s.setSelected(s.getSelectedObject(), false);
 512     }
 513
 514     public void showFiles(Folder f) {
 515         Set<File> files = f.getFiles();
 516         showFiles(files);
 517     }
 518
 519     public void showFiles(Set<File> files) {
 520         //Iterator<File> iter = files.iterator();
 521         //fetchFile(iter, files);
 522         fileList.setFiles(new ArrayList<File>(files));
 523     }
 524
 525     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 526         if (iter.hasNext()) {
 527             File file = iter.next();
 528             String path = file.getUri() + "?format=json";
 529             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 530                 @Override
 531                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 532                     fetchFile(iter, files);
 533                 }
 534
 535                 @Override
 536                 public void onError(Throwable t) {
 537                     GWT.log("Error getting file", t);
 538                     if (t instanceof RestException)
 539                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 540                     else
 541                         displayError("System error fetching file: " + t.getMessage());
 542                 }
 543
 544                                 @Override
 545                                 protected void onUnauthorized(Response response) {
 546                                         sessionExpired();
 547                                 }
 548             };
 549             getFile.setHeader("X-Auth-Token", "0000");
 550             Scheduler.get().scheduleDeferred(getFile);
 551         }
 552         else
 553             fileList.setFiles(new ArrayList<File>(files));
 554     }
 555
 556     /**
 557          * Parse and store the user credentials to the appropriate fields.
 558          */
 559         private boolean parseUserCredentials() {
 560         username = Window.Location.getParameter("user");
 561         token = Window.Location.getParameter("token");
 562         Configuration conf = (Configuration) GWT.create(Configuration.class);
 563         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 564             String cookie = conf.authCookie();
 565             String auth = Cookies.getCookie(cookie);
 566             if (auth == null) {
 567                 authenticateUser();
 568                 return false;
 569             }
 570                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 571                         if (authSplit.length != 2) {
 572                             authenticateUser();
 573                             return false;
 574                         }
 575                         username = authSplit[0];
 576                         token = authSplit[1];
 577                         return true;
 578         }
 579                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
 580                 return true;
 581     }
 582
 583     /**
 584          * Redirect the user to the login page for authentication.
 585          */
 586         protected void authenticateUser() {
 587                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 588         Window.Location.assign(conf.loginUrl() + "?next=" + Window.Location.getHref());
 589         }
 590
 591         protected void fetchAccount(final Command callback) {
 592         String path = "?format=json";
 593
 594         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 595             @Override
 596             public void onSuccess(AccountResource _result) {
 597                 account = _result;
 598                 if (callback != null)
 599                         callback.execute();
 600             }
 601
 602             @Override
 603             public void onError(Throwable t) {
 604                 GWT.log("Error getting account", t);
 605                 if (t instanceof RestException)
 606                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 607                 else
 608                     displayError("System error fetching user data: " + t.getMessage());
 609             }
 610
 611                         @Override
 612                         protected void onUnauthorized(Response response) {
 613                                 sessionExpired();
 614                         }
 615         };
 616         getAccount.setHeader("X-Auth-Token", token);
 617         Scheduler.get().scheduleDeferred(getAccount);
 618     }
 619
 620     public void updateStatistics() {
 621         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 622
 623                         @Override
 624                         public void onSuccess(@SuppressWarnings("unused") AccountResource _result) {
 625                                 showStatistics();
 626                         }
 627
 628                         @Override
 629                         public void onError(Throwable t) {
 630                 GWT.log("Error getting account", t);
 631                 if (t instanceof RestException)
 632                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 633                 else
 634                     displayError("System error fetching user data: " + t.getMessage());
 635                         }
 636
 637                         @Override
 638                         protected void onUnauthorized(Response response) {
 639                                 sessionExpired();
 640                         }
 641                 };
 642                 headAccount.setHeader("X-Auth-Token", token);
 643                 Scheduler.get().scheduleDeferred(headAccount);
 644         }
 645
 646         protected void showStatistics() {
 647         totalFiles.setHTML(String.valueOf(account.getNumberOfObjects()));
 648         usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
 649         totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
 650         NumberFormat nf = NumberFormat.getPercentFormat();
 651         usedPercent.setHTML(nf.format(account.getUsedPercentage()));
 652         }
 653
 654         protected void createHomeContainer(final AccountResource _account, final Command callback) {
 655         String path = "/" + Pithos.HOME_CONTAINER;
 656         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 657             @Override
 658             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 659                 if (!_account.hasTrashContainer())
 660                         createTrashContainer(callback);
 661                 else
 662                         fetchAccount(callback);
 663             }
 664
 665             @Override
 666             public void onError(Throwable t) {
 667                 GWT.log("Error creating pithos", t);
 668                 if (t instanceof RestException)
 669                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 670                 else
 671                     displayError("System error Error creating pithos: " + t.getMessage());
 672             }
 673
 674                         @Override
 675                         protected void onUnauthorized(Response response) {
 676                                 sessionExpired();
 677                         }
 678         };
 679         createPithos.setHeader("X-Auth-Token", getToken());
 680         Scheduler.get().scheduleDeferred(createPithos);
 681     }
 682
 683     protected void createTrashContainer(final Command callback) {
 684         String path = "/" + Pithos.TRASH_CONTAINER;
 685         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 686             @Override
 687             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 688                         fetchAccount(callback);
 689             }
 690
 691             @Override
 692             public void onError(Throwable t) {
 693                 GWT.log("Error creating pithos", t);
 694                 if (t instanceof RestException)
 695                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 696                 else
 697                     displayError("System error Error creating pithos: " + t.getMessage());
 698             }
 699
 700                         @Override
 701                         protected void onUnauthorized(Response response) {
 702                                 sessionExpired();
 703                         }
 704         };
 705         createPithos.setHeader("X-Auth-Token", getToken());
 706         Scheduler.get().scheduleDeferred(createPithos);
 707     }
 708
 709     /**
 710          * Creates an HTML fragment that places an image & caption together, for use
 711          * in a group header.
 712          *
 713          * @param imageProto an image prototype for an image
 714          * @param caption the group caption
 715          * @return the header HTML fragment
 716          */
 717         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 718                 String captionHTML = "<table class='caption' cellpadding='0' "
 719                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 720                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 721                 + caption + "</b></td></tr></table>";
 722                 return captionHTML;
 723         }
 724
 725         protected void onWindowResized(int height) {
 726                 // Adjust the split panel to take up the available room in the window.
 727                 int newHeight = height - splitPanel.getAbsoluteTop();
 728                 if (newHeight < 1)
 729                         newHeight = 1;
 730                 splitPanel.setHeight("" + newHeight);
 731                 inner.setHeight("" + newHeight);
 732         }
 733
 734         @Override
 735         public void onResize(ResizeEvent event) {
 736                 int height = event.getHeight();
 737                 onWindowResized(height);
 738         }
 739
 740         /**
 741          * Display an error message.
 742          *
 743          * @param msg the message to display
 744          */
 745         public void displayError(String msg) {
 746                 messagePanel.displayError(msg);
 747         }
 748
 749         /**
 750          * Display a warning message.
 751          *
 752          * @param msg the message to display
 753          */
 754         public void displayWarning(String msg) {
 755                 messagePanel.displayWarning(msg);
 756         }
 757
 758         /**
 759          * Display an informational message.
 760          *
 761          * @param msg the message to display
 762          */
 763         public void displayInformation(String msg) {
 764                 messagePanel.displayInformation(msg);
 765         }
 766
 767         /**
 768          * Retrieve the fileList.
 769          *
 770          * @return the fileList
 771          */
 772         public FileList getFileList() {
 773                 return fileList;
 774         }
 775
 776         /**
 777          * Retrieve the topPanel.
 778          *
 779          * @return the topPanel
 780          */
 781         TopPanel getTopPanel() {
 782                 return topPanel;
 783         }
 784
 785         /**
 786          * Retrieve the clipboard.
 787          *
 788          * @return the clipboard
 789          */
 790         public Clipboard getClipboard() {
 791                 return clipboard;
 792         }
 793
 794         public StatusPanel getStatusPanel() {
 795                 return statusPanel;
 796         }
 797
 798         public String getToken() {
 799                 return token;
 800         }
 801
 802         public static native void preventIESelection() /*-{
 803                 $doc.body.onselectstart = function () { return false; };
 804         }-*/;
 805
 806         public static native void enableIESelection() /*-{
 807                 if ($doc.body.onselectstart != null)
 808                 $doc.body.onselectstart = null;
 809         }-*/;
 810
 811         /**
 812          * @return the absolute path of the API root URL
 813          */
 814         public String getApiPath() {
 815                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 816                 return conf.apiPath();
 817         }
 818
 819         /**
 820          * History support for folder navigation
 821          * adds a new browser history entry
 822          *
 823          * @param key
 824          */
 825         public void updateHistory(String key){
 826 //              Replace any whitespace of the initial string to "+"
 827 //              String result = key.replaceAll("\\s","+");
 828 //              Add a new browser history entry.
 829 //              History.newItem(result);
 830                 History.newItem(key);
 831         }
 832
 833     public void deleteFolder(final Folder folder) {
 834         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(folder.getPrefix()) + "&t=" + System.currentTimeMillis();
 835         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 836         builder.setHeader("X-Auth-Token", getToken());
 837         try {
 838             builder.sendRequest("", new RequestCallback() {
 839                 @Override
 840                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 841                     if (response.getStatusCode() == Response.SC_OK) {
 842                         JSONValue json = JSONParser.parseStrict(response.getText());
 843                         JSONArray array = json.isArray();
 844                         int i = 0;
 845                         if (array != null) {
 846                             deleteObject(folder, i, array);
 847                         }
 848                     }
 849                 }
 850
 851                 @Override
 852                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 853                     displayError("System error unable to delete folder: " + exception.getMessage());
 854                 }
 855             });
 856         }
 857         catch (RequestException e) {
 858         }
 859     }
 860
 861     void deleteObject(final Folder folder, final int i, final JSONArray array) {
 862         if (i < array.size()) {
 863             JSONObject o = array.get(i).isObject();
 864             if (o != null && !o.containsKey("subdir")) {
 865                 JSONString name = o.get("name").isString();
 866                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 867                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
 868                     @Override
 869                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 870                         deleteObject(folder, i + 1, array);
 871                     }
 872
 873                     @Override
 874                     public void onError(Throwable t) {
 875                         GWT.log("", t);
 876                         displayError("System error unable to delete folder: " + t.getMessage());
 877                     }
 878
 879                                 @Override
 880                                 protected void onUnauthorized(Response response) {
 881                                         sessionExpired();
 882                                 }
 883                 };
 884                 delete.setHeader("X-Auth-Token", getToken());
 885                 Scheduler.get().scheduleDeferred(delete);
 886             }
 887             else if (o != null) {
 888                 String subdir = o.get("subdir").isString().stringValue();
 889                 subdir = subdir.substring(0, subdir.length() - 1);
 890                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(subdir) + "&t=" + System.currentTimeMillis();
 891                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 892                 builder.setHeader("X-Auth-Token", getToken());
 893                 try {
 894                     builder.sendRequest("", new RequestCallback() {
 895                         @Override
 896                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 897                             if (response.getStatusCode() == Response.SC_OK) {
 898                                 JSONValue json = JSONParser.parseStrict(response.getText());
 899                                 JSONArray array2 = json.isArray();
 900                                 if (array2 != null) {
 901                                     int l = array.size();
 902                                     for (int j=0; j<array2.size(); j++) {
 903                                         array.set(l++, array2.get(j));
 904                                     }
 905                                 }
 906                                 deleteObject(folder, i + 1, array);
 907                             }
 908                         }
 909
 910                         @Override
 911                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 912                             displayError("System error unable to delete folder: " + exception.getMessage());
 913                         }
 914                     });
 915                 }
 916                 catch (RequestException e) {
 917                 }
 918             }
 919         }
 920         else {
 921             String path = folder.getUri();
 922             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 923                 @Override
 924                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 925                     updateFolder(folder.getParent(), true, new Command() {
 926
 927                                                 @Override
 928                                                 public void execute() {
 929                                                         updateStatistics();
 930                                                 }
 931                                         });
 932                 }
 933
 934                 @Override
 935                 public void onError(Throwable t) {
 936                     GWT.log("", t);
 937                     if (t instanceof RestException) {
 938                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 939                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 940                         else
 941                                 onSuccess(null);
 942                     }
 943                     else
 944                         displayError("System error unable to delete folder: " + t.getMessage());
 945                 }
 946
 947                                 @Override
 948                                 protected void onUnauthorized(Response response) {
 949                                         sessionExpired();
 950                                 }
 951             };
 952             deleteFolder.setHeader("X-Auth-Token", getToken());
 953             Scheduler.get().scheduleDeferred(deleteFolder);
 954         }
 955     }
 956
 957     public FolderTreeView getFolderTreeView() {
 958         return folderTreeView;
 959     }
 960
 961     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 962         if (iter.hasNext()) {
 963             File file = iter.next();
 964             String path = targetUri + "/" + file.getName();
 965             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 966                 @Override
 967                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 968                     copyFiles(iter, targetUsername, targetUri, callback);
 969                 }
 970
 971                 @Override
 972                 public void onError(Throwable t) {
 973                     GWT.log("", t);
 974                     if (t instanceof RestException) {
 975                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 976                     }
 977                     else
 978                         displayError("System error unable to copy file: "+t.getMessage());
 979                 }
 980
 981                                 @Override
 982                                 protected void onUnauthorized(Response response) {
 983                                         sessionExpired();
 984                                 }
 985             };
 986             copyFile.setHeader("X-Auth-Token", getToken());
 987             copyFile.setHeader("X-Copy-From", file.getUri());
 988             if (!file.getOwner().equals(targetUsername))
 989                 copyFile.setHeader("X-Source-Account", file.getOwner());
 990             Scheduler.get().scheduleDeferred(copyFile);
 991         }
 992         else  if (callback != null) {
 993             callback.execute();
 994         }
 995     }
 996
 997     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
 998         if (iter.hasNext()) {
 999             final Folder f = iter.next();
1000             copyFolder(f, targetUsername, targetUri, new Command() {
1001
1002                                 @Override
1003                                 public void execute() {
1004                                         copySubfolders(iter, targetUsername, targetUri, callback);
1005                                 }
1006                         });
1007         }
1008         else  if (callback != null) {
1009             callback.execute();
1010         }
1011     }
1012
1013     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
1014         String path = targetUri + "/" + f.getName();
1015         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
1016             @Override
1017             public void onSuccess(@SuppressWarnings("unused") Resource result) {
1018                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix()), f) {
1019
1020                                         @Override
1021                                         public void onSuccess(final Folder _f) {
1022                                 Iterator<File> iter = _f.getFiles().iterator();
1023                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
1024                                     @Override
1025                                     public void execute() {
1026                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
1027                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
1028                                     }
1029                                 });
1030                                         }
1031
1032                                         @Override
1033                                         public void onError(Throwable t) {
1034                                 GWT.log("", t);
1035                                 if (t instanceof RestException) {
1036                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
1037                                 }
1038                                 else
1039                                     displayError("System error getting folder: " + t.getMessage());
1040                                         }
1041
1042                                         @Override
1043                                         protected void onUnauthorized(Response response) {
1044                                                 sessionExpired();
1045                                         }
1046                                 };
1047                                 getFolder.setHeader("X-Auth-Token", getToken());
1048                                 Scheduler.get().scheduleDeferred(getFolder);
1049             }
1050
1051             @Override
1052             public void onError(Throwable t) {
1053                 GWT.log("", t);
1054                 if (t instanceof RestException) {
1055                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
1056                 }
1057                 else
1058                     displayError("System error creating folder: " + t.getMessage());
1059             }
1060
1061                         @Override
1062                         protected void onUnauthorized(Response response) {
1063                                 sessionExpired();
1064                         }
1065         };
1066         createFolder.setHeader("X-Auth-Token", getToken());
1067         createFolder.setHeader("Accept", "*/*");
1068         createFolder.setHeader("Content-Length", "0");
1069         createFolder.setHeader("Content-Type", "application/folder");
1070         Scheduler.get().scheduleDeferred(createFolder);
1071     }
1072
1073     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1074         selectionModels.add(model);
1075     }
1076
1077         public OtherSharedTreeView getOtherSharedTreeView() {
1078                 return otherSharedTreeView;
1079         }
1080
1081         public void updateTrash(boolean showFiles, Command callback) {
1082                 updateFolder(trash, showFiles, callback);
1083         }
1084
1085         public void updateGroupsNode() {
1086                 groupTreeView.updateGroupNode(null);
1087         }
1088
1089         public void addGroup(String groupname) {
1090                 Group newGroup = new Group(groupname);
1091                 account.addGroup(newGroup);
1092                 groupTreeView.updateGroupNode(null);
1093         }
1094
1095         public void removeGroup(Group group) {
1096                 account.removeGroup(group);
1097                 updateGroupsNode();
1098         }
1099
1100         public TreeView getSelectedTree() {
1101                 return selectedTree;
1102         }
1103
1104         public Folder getSelection() {
1105                 return selectedTree.getSelection();
1106         }
1107
1108         public void showFolderStatistics(int folderFileCount) {
1109                 numOfFiles.setHTML(String.valueOf(folderFileCount));
1110         }
1111
1112         public GroupTreeView getGroupTreeView() {
1113                 return groupTreeView;
1114         }
1115
1116         public void sessionExpired() {
1117                 new SessionExpiredDialog(this).center();
1118         }
1119
1120         public void updateRootFolder(Command callback) {
1121                 updateFolder(account.getPithos(), false, callback);
1122         }
1123
1124         void createMySharedTree() {
1125                 mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1126                 mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1127                     @Override
1128                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1129                         if (mysharedTreeSelectionModel.getSelectedObject() != null) {
1130                             deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1131                             upload.setEnabled(false);
1132                             updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1133                         }
1134                     }
1135                 });
1136                 selectionModels.add(mysharedTreeSelectionModel);
1137                 mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1138                 mysharedTreeViewModel.initialize(new Command() {
1139
1140                         @Override
1141                         public void execute() {
1142                             mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1143                                 trees.insert(mysharedTreeView, 2);
1144                                 treeViews.add(mysharedTreeView);
1145                                 createOtherSharedTree();
1146                         }
1147                 });
1148         }
1149
1150         void createOtherSharedTree() {
1151                 otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1152                 otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1153                     @Override
1154                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1155                         if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
1156                             deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1157                             otherSharedTreeView.addStyleName("cellTreeWidget-selectedTree");
1158                             applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1159                             updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
1160                         }
1161                     }
1162                 });
1163                 selectionModels.add(otherSharedTreeSelectionModel);
1164                 otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1165                 otherSharedTreeViewModel.initialize(new Command() {
1166
1167                         @Override
1168                         public void execute() {
1169                             otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1170                                 trees.insert(otherSharedTreeView, 3);
1171                                 treeViews.add(otherSharedTreeView);
1172                         }
1173                 });
1174         }
1175
1176         public void logoff() {
1177         Configuration conf = (Configuration) GWT.create(Configuration.class);
1178                 Cookies.removeCookie(conf.authCookie());
1179                 Cookies.removeCookie(conf.authTokenCookie(), "/");
1180                 for (String s: Cookies.getCookieNames())
1181                         if (s.startsWith(conf.shibSessionCookiePrefix()))
1182                                 Cookies.removeCookie(s, "/");
1183                 Window.Location.assign(Window.Location.getPath());
1184         }
1185 }