code.grnet.gr Git - pithos/blob - web_client/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.Date;
  62 import java.util.HashMap;
  63 import java.util.Iterator;
  64 import java.util.List;
  65 import java.util.Set;
  66
  67 import com.google.gwt.core.client.EntryPoint;
  68 import com.google.gwt.core.client.GWT;
  69 import com.google.gwt.core.client.Scheduler;
  70 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  71 import com.google.gwt.event.dom.client.ClickEvent;
  72 import com.google.gwt.event.dom.client.ClickHandler;
  73 import com.google.gwt.event.logical.shared.ResizeEvent;
  74 import com.google.gwt.event.logical.shared.ResizeHandler;
  75 import com.google.gwt.http.client.Request;
  76 import com.google.gwt.http.client.RequestBuilder;
  77 import com.google.gwt.http.client.RequestCallback;
  78 import com.google.gwt.http.client.RequestException;
  79 import com.google.gwt.http.client.Response;
  80 import com.google.gwt.http.client.URL;
  81 import com.google.gwt.i18n.client.NumberFormat;
  82 import com.google.gwt.json.client.JSONArray;
  83 import com.google.gwt.json.client.JSONObject;
  84 import com.google.gwt.json.client.JSONParser;
  85 import com.google.gwt.json.client.JSONString;
  86 import com.google.gwt.json.client.JSONValue;
  87 import com.google.gwt.resources.client.ImageResource;
  88 import com.google.gwt.resources.client.ImageResource.ImageOptions;
  89 import com.google.gwt.user.client.Command;
  90 import com.google.gwt.user.client.Cookies;
  91 import com.google.gwt.user.client.Event;
  92 import com.google.gwt.user.client.History;
  93 import com.google.gwt.user.client.Window;
  94 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  95 import com.google.gwt.user.client.ui.Button;
  96 import com.google.gwt.user.client.ui.Composite;
  97 import com.google.gwt.user.client.ui.HTML;
  98 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  99 import com.google.gwt.user.client.ui.HasVerticalAlignment;
 100 import com.google.gwt.user.client.ui.HorizontalPanel;
 101 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
 102 import com.google.gwt.user.client.ui.Image;
 103 import com.google.gwt.user.client.ui.RootPanel;
 104 import com.google.gwt.user.client.ui.VerticalPanel;
 105 import com.google.gwt.view.client.SelectionChangeEvent;
 106 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
 107 import com.google.gwt.view.client.SingleSelectionModel;
 108
 109 /**
 110  * Entry point classes define <code>onModuleLoad()</code>.
 111  */
 112 public class Pithos implements EntryPoint, ResizeHandler {
 113
 114         public static final String HOME_CONTAINER = "pithos";
 115
 116         public static final String TRASH_CONTAINER = "trash";
 117
 118         /**
 119          * Instantiate an application-level image bundle. This object will provide
 120          * programmatic access to all the images needed by widgets.
 121          */
 122         static Images images = (Images) GWT.create(Images.class);
 123
 124     public String getUsername() {
 125         return username;
 126     }
 127
 128     public void setAccount(AccountResource acct) {
 129         account = acct;
 130     }
 131
 132     public AccountResource getAccount() {
 133         return account;
 134     }
 135
 136     public void updateFolder(Folder f, boolean showfiles, Command callback) {
 137         folderTreeView.updateFolder(f, showfiles, callback);
 138     }
 139
 140     public void updateGroupNode(Group group) {
 141         groupTreeView.updateGroupNode(group);
 142     }
 143
 144     public void updateSharedFolder(Folder f, boolean showfiles) {
 145         mysharedTreeView.updateFolder(f, showfiles);
 146     }
 147
 148     public void updateOtherSharedFolder(Folder f, boolean showfiles) {
 149         otherSharedTreeView.updateFolder(f, showfiles);
 150     }
 151
 152     public List<Tag> getAllTags() {
 153         List<Tag> tagList = new ArrayList<Tag>();
 154         for (Folder f : account.getContainers()) {
 155             for (String t : f.getTags()) {
 156                 tagList.add(new Tag(t));
 157             }
 158         }
 159         return tagList;
 160     }
 161
 162     public MysharedTreeView getMySharedTreeView() {
 163         return mysharedTreeView;
 164     }
 165
 166     /**
 167          * An aggregate image bundle that pulls together all the images for this
 168          * application into a single bundle.
 169          */
 170         public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 171
 172                 @Source("gr/grnet/pithos/resources/document.png")
 173                 ImageResource folders();
 174
 175                 @Source("gr/grnet/pithos/resources/advancedsettings.png")
 176                 @ImageOptions(width=32, height=32)
 177                 ImageResource tools();
 178         }
 179
 180         /**
 181          * The Application Clipboard implementation;
 182          */
 183         private Clipboard clipboard = new Clipboard();
 184
 185         /**
 186          * The top panel that contains the menu bar.
 187          */
 188         private TopPanel topPanel;
 189
 190         /**
 191          * The panel that contains the various system messages.
 192          */
 193         private MessagePanel messagePanel = new MessagePanel(Pithos.images);
 194
 195         /**
 196          * The bottom panel that contains the status bar.
 197          */
 198         private StatusPanel statusPanel = null;
 199
 200         /**
 201          * The file list widget.
 202          */
 203         private FileList fileList;
 204
 205         /**
 206          * The tab panel that occupies the right side of the screen.
 207          */
 208         private VerticalPanel inner = new VerticalPanel();
 209
 210
 211         /**
 212          * The split panel that will contain the left and right panels.
 213          */
 214         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 215
 216         /**
 217          * The currently selected item in the application, for use by the Edit menu
 218          * commands. Potential types are Folder, File, User and Group.
 219          */
 220         private Object currentSelection;
 221
 222         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 223
 224     private String username = null;
 225
 226     /**
 227      * The authentication token of the current user.
 228      */
 229     private String token;
 230
 231     VerticalPanel trees;
 232
 233     SingleSelectionModel<Folder> folderTreeSelectionModel;
 234     FolderTreeViewModel folderTreeViewModel;
 235     FolderTreeView folderTreeView;
 236
 237     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 238     MysharedTreeViewModel mysharedTreeViewModel;
 239     MysharedTreeView mysharedTreeView = null;;
 240
 241     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 242     OtherSharedTreeViewModel otherSharedTreeViewModel;
 243     OtherSharedTreeView otherSharedTreeView = null;
 244
 245     GroupTreeViewModel groupTreeViewModel;
 246     private GroupTreeView groupTreeView;
 247
 248     private TreeView selectedTree;
 249     protected AccountResource account;
 250
 251     Folder trash;
 252
 253     List<Composite> treeViews = new ArrayList<Composite>();
 254
 255     @SuppressWarnings("rawtypes") List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 256
 257     Button upload;
 258
 259     private HTML usedBytes;
 260
 261     private HTML totalBytes;
 262
 263     private HTML usedPercent;
 264
 265     private HTML numOfFiles;
 266
 267     private Image toolsButton;
 268
 269         @Override
 270         public void onModuleLoad() {
 271                 if (parseUserCredentials())
 272             initialize();
 273         }
 274
 275     private void initialize() {
 276         boolean bareContent = Window.Location.getParameter("noframe") != null;
 277         String contentWidth = bareContent ? "100%" : "75%";
 278
 279         VerticalPanel outer = new VerticalPanel();
 280         outer.setWidth("100%");
 281         if (!bareContent) {
 282                 outer.addStyleName("pithos-outer");
 283         }
 284
 285         if (!bareContent) {
 286                 topPanel = new TopPanel(this, Pithos.images);
 287                 topPanel.setWidth("100%");
 288                 outer.add(topPanel);
 289                 outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 290         }
 291
 292         HorizontalPanel header = new HorizontalPanel();
 293         header.addStyleName("pithos-header");
 294         header.setWidth(contentWidth);
 295         if (bareContent)
 296                 header.addStyleName("pithos-header-noframe");
 297         upload = new Button("Upload File", new ClickHandler() {
 298             @Override
 299             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 300                 new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 301             }
 302         });
 303         upload.addStyleName("pithos-uploadButton");
 304         header.add(upload);
 305         header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 306         header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 307 //        header.setCellWidth(upload, "146px");
 308
 309         messagePanel.setVisible(false);
 310         header.add(messagePanel);
 311         header.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 312         header.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
 313
 314         toolsButton = new Image(images.tools());
 315         toolsButton.addStyleName("pithos-toolsButton");
 316         toolsButton.addClickHandler(new ClickHandler() {
 317
 318                         @Override
 319                         public void onClick(ClickEvent event) {
 320                 ToolsMenu menu = new ToolsMenu(Pithos.this, images, getSelectedTree(), getSelectedTree().getSelection(), getFileList().getSelectedFiles());
 321                 if (!menu.isEmpty()) {
 322                             menu.setPopupPosition(event.getClientX(), event.getClientY());
 323                             menu.show();
 324                 }
 325                         }
 326                 });
 327         header.add(toolsButton);
 328         header.setCellHorizontalAlignment(toolsButton, HasHorizontalAlignment.ALIGN_CENTER);
 329         header.setCellVerticalAlignment(toolsButton, HasVerticalAlignment.ALIGN_MIDDLE);
 330         header.setCellWidth(toolsButton, "40px");
 331
 332         HorizontalPanel folderStatistics = new HorizontalPanel();
 333         folderStatistics.addStyleName("pithos-folderStatistics");
 334         numOfFiles = new HTML();
 335         folderStatistics.add(numOfFiles);
 336         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 337         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 338         folderStatistics.add(numOfFilesLabel);
 339         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 340         header.add(folderStatistics);
 341         header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 342         header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
 343         header.setCellWidth(folderStatistics, "40px");
 344         outer.add(header);
 345         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 346         // Inner contains the various lists.nner
 347         inner.sinkEvents(Event.ONCONTEXTMENU);
 348         inner.setWidth("100%");
 349
 350         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 351         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 352             @Override
 353             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 354                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 355                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 356                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 357                     Folder f = folderTreeSelectionModel.getSelectedObject();
 358                     showFiles(f);
 359                 }
 360             }
 361         });
 362         selectionModels.add(folderTreeSelectionModel);
 363
 364         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 365         folderTreeView = new FolderTreeView(folderTreeViewModel);
 366         treeViews.add(folderTreeView);
 367
 368         fileList = new FileList(this, images, folderTreeView);
 369         inner.add(fileList);
 370
 371         groupTreeViewModel = new GroupTreeViewModel(this);
 372         groupTreeView = new GroupTreeView(groupTreeViewModel);
 373         treeViews.add(groupTreeView);
 374
 375         trees = new VerticalPanel();
 376         trees.setWidth("100%");
 377
 378
 379         HorizontalPanel treeHeader = new HorizontalPanel();
 380         treeHeader.addStyleName("pithos-treeHeader");
 381         treeHeader.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);
 382         treeHeader.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
 383         HorizontalPanel statistics = new HorizontalPanel();
 384         statistics.addStyleName("pithos-statistics");
 385         statistics.add(new HTML("Used:&nbsp;"));
 386         usedBytes = new HTML();
 387         statistics.add(usedBytes);
 388         statistics.add(new HTML("&nbsp;of&nbsp;"));
 389         totalBytes = new HTML();
 390         statistics.add(totalBytes);
 391         statistics.add(new HTML("&nbsp;("));
 392         usedPercent = new HTML();
 393         statistics.add(usedPercent);
 394         statistics.add(new HTML(")"));
 395         treeHeader.add(statistics);
 396         treeHeader.setCellHorizontalAlignment(statistics, HasHorizontalAlignment.ALIGN_LEFT);
 397         trees.add(treeHeader);
 398
 399         trees.add(folderTreeView);
 400         trees.add(groupTreeView);
 401         // Add the left and right panels to the split panel.
 402         splitPanel.setLeftWidget(trees);
 403         splitPanel.setRightWidget(inner);
 404         splitPanel.setSplitPosition("35%");
 405         splitPanel.setSize("100%", "100%");
 406         splitPanel.addStyleName("pithos-splitPanel");
 407         splitPanel.setWidth(contentWidth);
 408         outer.add(splitPanel);
 409         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 410
 411         if (!bareContent) {
 412                 statusPanel = new StatusPanel();
 413                 statusPanel.setWidth("100%");
 414                 outer.add(statusPanel);
 415                 outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 416         }
 417         else
 418                 splitPanel.addStyleName("pithos-splitPanel-noframe");
 419
 420         // Hook the window resize event, so that we can adjust the UI.
 421         Window.addResizeHandler(this);
 422         // Clear out the window's built-in margin, because we want to take
 423         // advantage of the entire client area.
 424         Window.setMargin("0px");
 425         // Finally, add the outer panel to the RootPanel, so that it will be
 426         // displayed.
 427         RootPanel.get().add(outer);
 428         // Call the window resized handler to get the initial sizes setup. Doing
 429         // this in a deferred command causes it to occur after all widgets'
 430         // sizes have been computed by the browser.
 431         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 432
 433             @Override
 434             public void execute() {
 435                 onWindowResized(Window.getClientHeight());
 436             }
 437         });
 438
 439         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 440             @Override
 441             public void execute() {
 442                 fetchAccount(new Command() {
 443
 444                                         @Override
 445                                         public void execute() {
 446                                 if (!account.hasHomeContainer())
 447                                     createHomeContainer(account, this);
 448                                 else if (!account.hasTrashContainer())
 449                                         createTrashContainer(this);
 450                                 else {
 451                                         for (Folder f : account.getContainers())
 452                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 453                                                         trash = f;
 454                                                         break;
 455                                                 }
 456                                     folderTreeViewModel.initialize(account, new Command() {
 457
 458                                                                 @Override
 459                                                                 public void execute() {
 460                                                     createMySharedTree();
 461                                                                 }
 462                                                         });
 463                                     groupTreeViewModel.initialize();
 464                                     showStatistics();
 465                                 }
 466                                         }
 467                                 });
 468             }
 469         });
 470
 471 //        Scheduler.get().scheduleDeferred(new Command() {
 472 //
 473 //                      @Override
 474 //                      public void execute() {
 475 //                              displayError("lalala");
 476 //
 477 //                      }
 478 //              });
 479     }
 480
 481     public void applyPermissions(Folder f) {
 482         if (f != null) {
 483                 if (f.isInTrash())
 484                         upload.setEnabled(false);
 485                 else {
 486                         Boolean[] perms = f.getPermissions().get(username);
 487                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 488                                 upload.setEnabled(true);
 489                         }
 490                         else
 491                                 upload.setEnabled(false);
 492                 }
 493         }
 494         else
 495                 upload.setEnabled(false);
 496         }
 497
 498         @SuppressWarnings({ "rawtypes", "unchecked" })
 499         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 500         selectedTree = _selectedTree;
 501
 502         for (Composite c : treeViews)
 503                 if (c.equals(selectedTree))
 504                         c.addStyleName("cellTreeWidget-selectedTree");
 505                 else
 506                         c.removeStyleName("cellTreeWidget-selectedTree");
 507
 508         for (SingleSelectionModel s : selectionModels)
 509             if (!s.equals(model))
 510                 s.setSelected(s.getSelectedObject(), false);
 511     }
 512
 513     public void showFiles(Folder f) {
 514         Set<File> files = f.getFiles();
 515         showFiles(files);
 516     }
 517
 518     public void showFiles(Set<File> files) {
 519         //Iterator<File> iter = files.iterator();
 520         //fetchFile(iter, files);
 521         fileList.setFiles(new ArrayList<File>(files));
 522     }
 523
 524     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 525         if (iter.hasNext()) {
 526             File file = iter.next();
 527             String path = file.getUri() + "?format=json";
 528             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 529                 @Override
 530                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 531                     fetchFile(iter, files);
 532                 }
 533
 534                 @Override
 535                 public void onError(Throwable t) {
 536                     GWT.log("Error getting file", t);
 537                     if (t instanceof RestException)
 538                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 539                     else
 540                         displayError("System error fetching file: " + t.getMessage());
 541                 }
 542
 543                                 @Override
 544                                 protected void onUnauthorized(Response response) {
 545                                         sessionExpired();
 546                                 }
 547             };
 548             getFile.setHeader("X-Auth-Token", "0000");
 549             Scheduler.get().scheduleDeferred(getFile);
 550         }
 551         else
 552             fileList.setFiles(new ArrayList<File>(files));
 553     }
 554
 555     /**
 556          * Parse and store the user credentials to the appropriate fields.
 557          */
 558         private boolean parseUserCredentials() {
 559         username = Window.Location.getParameter("user");
 560         token = Window.Location.getParameter("token");
 561         Configuration conf = (Configuration) GWT.create(Configuration.class);
 562         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 563             String cookie = conf.authCookie();
 564             String auth = Cookies.getCookie(cookie);
 565             if (auth == null) {
 566                 authenticateUser();
 567                 return false;
 568             }
 569                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 570                         if (authSplit.length != 2) {
 571                             authenticateUser();
 572                             return false;
 573                         }
 574                         username = authSplit[0];
 575                         token = authSplit[1];
 576                         return true;
 577         }
 578
 579                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token, null, "", "/", false);
 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         usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
 648         totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
 649         NumberFormat nf = NumberFormat.getPercentFormat();
 650         usedPercent.setHTML(nf.format(account.getUsedPercentage()));
 651         }
 652
 653         protected void createHomeContainer(final AccountResource _account, final Command callback) {
 654         String path = "/" + Pithos.HOME_CONTAINER;
 655         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 656             @Override
 657             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 658                 if (!_account.hasTrashContainer())
 659                         createTrashContainer(callback);
 660                 else
 661                         fetchAccount(callback);
 662             }
 663
 664             @Override
 665             public void onError(Throwable t) {
 666                 GWT.log("Error creating pithos", t);
 667                 if (t instanceof RestException)
 668                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 669                 else
 670                     displayError("System error Error creating pithos: " + t.getMessage());
 671             }
 672
 673                         @Override
 674                         protected void onUnauthorized(Response response) {
 675                                 sessionExpired();
 676                         }
 677         };
 678         createPithos.setHeader("X-Auth-Token", getToken());
 679         Scheduler.get().scheduleDeferred(createPithos);
 680     }
 681
 682     protected void createTrashContainer(final Command callback) {
 683         String path = "/" + Pithos.TRASH_CONTAINER;
 684         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 685             @Override
 686             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 687                         fetchAccount(callback);
 688             }
 689
 690             @Override
 691             public void onError(Throwable t) {
 692                 GWT.log("Error creating pithos", t);
 693                 if (t instanceof RestException)
 694                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 695                 else
 696                     displayError("System error Error creating pithos: " + t.getMessage());
 697             }
 698
 699                         @Override
 700                         protected void onUnauthorized(Response response) {
 701                                 sessionExpired();
 702                         }
 703         };
 704         createPithos.setHeader("X-Auth-Token", getToken());
 705         Scheduler.get().scheduleDeferred(createPithos);
 706     }
 707
 708     /**
 709          * Creates an HTML fragment that places an image & caption together, for use
 710          * in a group header.
 711          *
 712          * @param imageProto an image prototype for an image
 713          * @param caption the group caption
 714          * @return the header HTML fragment
 715          */
 716         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 717                 String captionHTML = "<table class='caption' cellpadding='0' "
 718                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 719                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 720                 + caption + "</b></td></tr></table>";
 721                 return captionHTML;
 722         }
 723
 724         protected void onWindowResized(int height) {
 725                 // Adjust the split panel to take up the available room in the window.
 726                 int newHeight = height - splitPanel.getAbsoluteTop();
 727                 if (newHeight < 1)
 728                         newHeight = 1;
 729                 splitPanel.setHeight("" + newHeight);
 730                 inner.setHeight("" + newHeight);
 731         }
 732
 733         @Override
 734         public void onResize(ResizeEvent event) {
 735                 int height = event.getHeight();
 736                 onWindowResized(height);
 737         }
 738
 739         /**
 740          * Display an error message.
 741          *
 742          * @param msg the message to display
 743          */
 744         public void displayError(String msg) {
 745                 messagePanel.displayError(msg);
 746         }
 747
 748         /**
 749          * Display a warning message.
 750          *
 751          * @param msg the message to display
 752          */
 753         public void displayWarning(String msg) {
 754                 messagePanel.displayWarning(msg);
 755         }
 756
 757         /**
 758          * Display an informational message.
 759          *
 760          * @param msg the message to display
 761          */
 762         public void displayInformation(String msg) {
 763                 messagePanel.displayInformation(msg);
 764         }
 765
 766         /**
 767          * Retrieve the fileList.
 768          *
 769          * @return the fileList
 770          */
 771         public FileList getFileList() {
 772                 return fileList;
 773         }
 774
 775         /**
 776          * Retrieve the topPanel.
 777          *
 778          * @return the topPanel
 779          */
 780         TopPanel getTopPanel() {
 781                 return topPanel;
 782         }
 783
 784         /**
 785          * Retrieve the clipboard.
 786          *
 787          * @return the clipboard
 788          */
 789         public Clipboard getClipboard() {
 790                 return clipboard;
 791         }
 792
 793         public StatusPanel getStatusPanel() {
 794                 return statusPanel;
 795         }
 796
 797         public String getToken() {
 798                 return token;
 799         }
 800
 801         public static native void preventIESelection() /*-{
 802                 $doc.body.onselectstart = function () { return false; };
 803         }-*/;
 804
 805         public static native void enableIESelection() /*-{
 806                 if ($doc.body.onselectstart != null)
 807                 $doc.body.onselectstart = null;
 808         }-*/;
 809
 810         /**
 811          * @return the absolute path of the API root URL
 812          */
 813         public String getApiPath() {
 814                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 815                 return conf.apiPath();
 816         }
 817
 818         /**
 819          * History support for folder navigation
 820          * adds a new browser history entry
 821          *
 822          * @param key
 823          */
 824         public void updateHistory(String key){
 825 //              Replace any whitespace of the initial string to "+"
 826 //              String result = key.replaceAll("\\s","+");
 827 //              Add a new browser history entry.
 828 //              History.newItem(result);
 829                 History.newItem(key);
 830         }
 831
 832     public void deleteFolder(final Folder folder) {
 833         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(folder.getPrefix()) + "&t=" + System.currentTimeMillis();
 834         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 835         builder.setHeader("X-Auth-Token", getToken());
 836         try {
 837             builder.sendRequest("", new RequestCallback() {
 838                 @Override
 839                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 840                     if (response.getStatusCode() == Response.SC_OK) {
 841                         JSONValue json = JSONParser.parseStrict(response.getText());
 842                         JSONArray array = json.isArray();
 843                         int i = 0;
 844                         if (array != null) {
 845                             deleteObject(folder, i, array);
 846                         }
 847                     }
 848                 }
 849
 850                 @Override
 851                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 852                     displayError("System error unable to delete folder: " + exception.getMessage());
 853                 }
 854             });
 855         }
 856         catch (RequestException e) {
 857         }
 858     }
 859
 860     void deleteObject(final Folder folder, final int i, final JSONArray array) {
 861         if (i < array.size()) {
 862             JSONObject o = array.get(i).isObject();
 863             if (o != null && !o.containsKey("subdir")) {
 864                 JSONString name = o.get("name").isString();
 865                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 866                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
 867                     @Override
 868                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 869                         deleteObject(folder, i + 1, array);
 870                     }
 871
 872                     @Override
 873                     public void onError(Throwable t) {
 874                         GWT.log("", t);
 875                         displayError("System error unable to delete folder: " + t.getMessage());
 876                     }
 877
 878                                 @Override
 879                                 protected void onUnauthorized(Response response) {
 880                                         sessionExpired();
 881                                 }
 882                 };
 883                 delete.setHeader("X-Auth-Token", getToken());
 884                 Scheduler.get().scheduleDeferred(delete);
 885             }
 886             else if (o != null) {
 887                 String subdir = o.get("subdir").isString().stringValue();
 888                 subdir = subdir.substring(0, subdir.length() - 1);
 889                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(subdir) + "&t=" + System.currentTimeMillis();
 890                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 891                 builder.setHeader("X-Auth-Token", getToken());
 892                 try {
 893                     builder.sendRequest("", new RequestCallback() {
 894                         @Override
 895                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 896                             if (response.getStatusCode() == Response.SC_OK) {
 897                                 JSONValue json = JSONParser.parseStrict(response.getText());
 898                                 JSONArray array2 = json.isArray();
 899                                 if (array2 != null) {
 900                                     int l = array.size();
 901                                     for (int j=0; j<array2.size(); j++) {
 902                                         array.set(l++, array2.get(j));
 903                                     }
 904                                 }
 905                                 deleteObject(folder, i + 1, array);
 906                             }
 907                         }
 908
 909                         @Override
 910                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 911                             displayError("System error unable to delete folder: " + exception.getMessage());
 912                         }
 913                     });
 914                 }
 915                 catch (RequestException e) {
 916                 }
 917             }
 918         }
 919         else {
 920             String path = folder.getUri();
 921             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 922                 @Override
 923                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 924                     updateFolder(folder.getParent(), true, new Command() {
 925
 926                                                 @Override
 927                                                 public void execute() {
 928                                                         updateStatistics();
 929                                                 }
 930                                         });
 931                 }
 932
 933                 @Override
 934                 public void onError(Throwable t) {
 935                     GWT.log("", t);
 936                     if (t instanceof RestException) {
 937                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 938                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 939                         else
 940                                 onSuccess(null);
 941                     }
 942                     else
 943                         displayError("System error unable to delete folder: " + t.getMessage());
 944                 }
 945
 946                                 @Override
 947                                 protected void onUnauthorized(Response response) {
 948                                         sessionExpired();
 949                                 }
 950             };
 951             deleteFolder.setHeader("X-Auth-Token", getToken());
 952             Scheduler.get().scheduleDeferred(deleteFolder);
 953         }
 954     }
 955
 956     public FolderTreeView getFolderTreeView() {
 957         return folderTreeView;
 958     }
 959
 960     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 961         if (iter.hasNext()) {
 962             File file = iter.next();
 963             String path = targetUri + "/" + file.getName();
 964             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 965                 @Override
 966                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 967                     copyFiles(iter, targetUsername, targetUri, callback);
 968                 }
 969
 970                 @Override
 971                 public void onError(Throwable t) {
 972                     GWT.log("", t);
 973                     if (t instanceof RestException) {
 974                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 975                     }
 976                     else
 977                         displayError("System error unable to copy file: "+t.getMessage());
 978                 }
 979
 980                                 @Override
 981                                 protected void onUnauthorized(Response response) {
 982                                         sessionExpired();
 983                                 }
 984             };
 985             copyFile.setHeader("X-Auth-Token", getToken());
 986             copyFile.setHeader("X-Copy-From", file.getUri());
 987             if (!file.getOwner().equals(targetUsername))
 988                 copyFile.setHeader("X-Source-Account", file.getOwner());
 989             Scheduler.get().scheduleDeferred(copyFile);
 990         }
 991         else  if (callback != null) {
 992             callback.execute();
 993         }
 994     }
 995
 996     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
 997         if (iter.hasNext()) {
 998             final Folder f = iter.next();
 999             copyFolder(f, targetUsername, targetUri, new Command() {
1000
1001                                 @Override
1002                                 public void execute() {
1003                                         copySubfolders(iter, targetUsername, targetUri, callback);
1004                                 }
1005                         });
1006         }
1007         else  if (callback != null) {
1008             callback.execute();
1009         }
1010     }
1011
1012     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
1013         String path = targetUri + "/" + f.getName();
1014         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
1015             @Override
1016             public void onSuccess(@SuppressWarnings("unused") Resource result) {
1017                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix()), f) {
1018
1019                                         @Override
1020                                         public void onSuccess(final Folder _f) {
1021                                 Iterator<File> iter = _f.getFiles().iterator();
1022                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
1023                                     @Override
1024                                     public void execute() {
1025                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
1026                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
1027                                     }
1028                                 });
1029                                         }
1030
1031                                         @Override
1032                                         public void onError(Throwable t) {
1033                                 GWT.log("", t);
1034                                 if (t instanceof RestException) {
1035                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
1036                                 }
1037                                 else
1038                                     displayError("System error getting folder: " + t.getMessage());
1039                                         }
1040
1041                                         @Override
1042                                         protected void onUnauthorized(Response response) {
1043                                                 sessionExpired();
1044                                         }
1045                                 };
1046                                 getFolder.setHeader("X-Auth-Token", getToken());
1047                                 Scheduler.get().scheduleDeferred(getFolder);
1048             }
1049
1050             @Override
1051             public void onError(Throwable t) {
1052                 GWT.log("", t);
1053                 if (t instanceof RestException) {
1054                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
1055                 }
1056                 else
1057                     displayError("System error creating folder: " + t.getMessage());
1058             }
1059
1060                         @Override
1061                         protected void onUnauthorized(Response response) {
1062                                 sessionExpired();
1063                         }
1064         };
1065         createFolder.setHeader("X-Auth-Token", getToken());
1066         createFolder.setHeader("Accept", "*/*");
1067         createFolder.setHeader("Content-Length", "0");
1068         createFolder.setHeader("Content-Type", "application/folder");
1069         Scheduler.get().scheduleDeferred(createFolder);
1070     }
1071
1072     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1073         selectionModels.add(model);
1074     }
1075
1076         public OtherSharedTreeView getOtherSharedTreeView() {
1077                 return otherSharedTreeView;
1078         }
1079
1080         public void updateTrash(boolean showFiles, Command callback) {
1081                 updateFolder(trash, showFiles, callback);
1082         }
1083
1084         public void updateGroupsNode() {
1085                 groupTreeView.updateGroupNode(null);
1086         }
1087
1088         public void addGroup(String groupname) {
1089                 Group newGroup = new Group(groupname);
1090                 account.addGroup(newGroup);
1091                 groupTreeView.updateGroupNode(null);
1092         }
1093
1094         public void removeGroup(Group group) {
1095                 account.removeGroup(group);
1096                 updateGroupsNode();
1097         }
1098
1099         public TreeView getSelectedTree() {
1100                 return selectedTree;
1101         }
1102
1103         public Folder getSelection() {
1104                 return selectedTree.getSelection();
1105         }
1106
1107         public void showFolderStatistics(int folderFileCount) {
1108                 numOfFiles.setHTML(String.valueOf(folderFileCount));
1109         }
1110
1111         public GroupTreeView getGroupTreeView() {
1112                 return groupTreeView;
1113         }
1114
1115         public void sessionExpired() {
1116                 new SessionExpiredDialog(this).center();
1117         }
1118
1119         public void updateRootFolder(Command callback) {
1120                 updateFolder(account.getPithos(), false, callback);
1121         }
1122
1123         void createMySharedTree() {
1124                 mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1125                 mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1126                     @Override
1127                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1128                         if (mysharedTreeSelectionModel.getSelectedObject() != null) {
1129                             deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1130                             upload.setEnabled(false);
1131                             updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1132                         }
1133                     }
1134                 });
1135                 selectionModels.add(mysharedTreeSelectionModel);
1136                 mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1137                 mysharedTreeViewModel.initialize(new Command() {
1138
1139                         @Override
1140                         public void execute() {
1141                             mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1142                                 trees.insert(mysharedTreeView, 2);
1143                                 treeViews.add(mysharedTreeView);
1144                                 createOtherSharedTree();
1145                         }
1146                 });
1147         }
1148
1149         void createOtherSharedTree() {
1150                 otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1151                 otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1152                     @Override
1153                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1154                         if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
1155                             deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1156                             otherSharedTreeView.addStyleName("cellTreeWidget-selectedTree");
1157                             applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1158                             updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
1159                         }
1160                     }
1161                 });
1162                 selectionModels.add(otherSharedTreeSelectionModel);
1163                 otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1164                 otherSharedTreeViewModel.initialize(new Command() {
1165
1166                         @Override
1167                         public void execute() {
1168                             otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1169                                 trees.insert(otherSharedTreeView, 3);
1170                                 treeViews.add(otherSharedTreeView);
1171                         }
1172                 });
1173         }
1174
1175         public void logoff() {
1176         Configuration conf = (Configuration) GWT.create(Configuration.class);
1177                 Cookies.removeCookie(conf.authCookie());
1178                 Cookies.removeCookie(conf.authTokenCookie(), "/");
1179                 for (String s: Cookies.getCookieNames())
1180                         if (s.startsWith(conf.shibSessionCookiePrefix()))
1181                                 Cookies.removeCookie(s, "/");
1182                 Window.Location.assign(Window.Location.getPath());
1183         }
1184 }