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.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     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 refreshButton;
 268
 269     private Image toolsButton;
 270
 271         @Override
 272         public void onModuleLoad() {
 273                 if (parseUserCredentials())
 274             initialize();
 275         }
 276
 277     private void initialize() {
 278         boolean bareContent = Window.Location.getParameter("noframe") != null;
 279         String contentWidth = bareContent ? "100%" : "75%";
 280
 281         VerticalPanel outer = new VerticalPanel();
 282         outer.setWidth("100%");
 283         if (!bareContent) {
 284                 outer.addStyleName("pithos-outer");
 285         }
 286
 287         if (!bareContent) {
 288                 topPanel = new TopPanel(this, Pithos.images);
 289                 topPanel.setWidth("100%");
 290                 outer.add(topPanel);
 291                 outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 292         }
 293
 294         HorizontalPanel header = new HorizontalPanel();
 295         header.addStyleName("pithos-header");
 296         header.setWidth(contentWidth);
 297         if (bareContent)
 298                 header.addStyleName("pithos-header-noframe");
 299         upload = new Button("Upload File", new ClickHandler() {
 300             @Override
 301             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 302                 new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 303             }
 304         });
 305         upload.addStyleName("pithos-uploadButton");
 306         header.add(upload);
 307         header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 308         header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 309 //        header.setCellWidth(upload, "146px");
 310
 311         messagePanel.setVisible(false);
 312         header.add(messagePanel);
 313         header.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 314         header.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
 315
 316         refreshButton = new Image(images.refresh());
 317         refreshButton.addStyleName("pithos-toolsButton");
 318         refreshButton.setWidth("32px");
 319         refreshButton.setHeight("32px");
 320         refreshButton.addClickHandler(new ClickHandler() {
 321
 322                         @Override
 323                         public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 324                         boolean isFolderTreeSelected = selectedTree.equals(getFolderTreeView());
 325                         boolean otherSharedTreeSelected = selectedTree.equals(getOtherSharedTreeView());
 326                         Folder folder = getSelectedTree().getSelection();
 327
 328                         if (folder != null && (isFolderTreeSelected || otherSharedTreeSelected))
 329                                 updateFolder(folder, true, new Command() {
 330
 331                                         @Override
 332                                         public void execute() {
 333                                                 updateStatistics();
 334                                         }
 335                                 });
 336                         }
 337                 });
 338         header.add(refreshButton);
 339         header.setCellHorizontalAlignment(refreshButton, HasHorizontalAlignment.ALIGN_CENTER);
 340         header.setCellVerticalAlignment(refreshButton, HasVerticalAlignment.ALIGN_MIDDLE);
 341         header.setCellWidth(refreshButton, "40px");
 342
 343         toolsButton = new Image(images.tools());
 344         toolsButton.addStyleName("pithos-toolsButton");
 345         toolsButton.addClickHandler(new ClickHandler() {
 346
 347                         @Override
 348                         public void onClick(ClickEvent event) {
 349                 ToolsMenu menu = new ToolsMenu(Pithos.this, images, getSelectedTree(), getSelectedTree().getSelection(), getFileList().getSelectedFiles());
 350                 if (!menu.isEmpty()) {
 351                             menu.setPopupPosition(event.getClientX(), event.getClientY());
 352                             menu.show();
 353                 }
 354                         }
 355                 });
 356         header.add(toolsButton);
 357         header.setCellHorizontalAlignment(toolsButton, HasHorizontalAlignment.ALIGN_CENTER);
 358         header.setCellVerticalAlignment(toolsButton, HasVerticalAlignment.ALIGN_MIDDLE);
 359         header.setCellWidth(toolsButton, "40px");
 360
 361         HorizontalPanel folderStatistics = new HorizontalPanel();
 362         folderStatistics.addStyleName("pithos-folderStatistics");
 363         numOfFiles = new HTML();
 364         folderStatistics.add(numOfFiles);
 365         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 366         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 367         folderStatistics.add(numOfFilesLabel);
 368         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 369         header.add(folderStatistics);
 370         header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 371         header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
 372         header.setCellWidth(folderStatistics, "40px");
 373         outer.add(header);
 374         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 375         // Inner contains the various lists.nner
 376         inner.sinkEvents(Event.ONCONTEXTMENU);
 377         inner.setWidth("100%");
 378
 379         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 380         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 381             @Override
 382             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 383                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 384                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 385                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 386                     Folder f = folderTreeSelectionModel.getSelectedObject();
 387                     showFiles(f);
 388                 }
 389             }
 390         });
 391         selectionModels.add(folderTreeSelectionModel);
 392
 393         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 394         folderTreeView = new FolderTreeView(folderTreeViewModel);
 395         treeViews.add(folderTreeView);
 396
 397         fileList = new FileList(this, images, folderTreeView);
 398         inner.add(fileList);
 399
 400         groupTreeViewModel = new GroupTreeViewModel(this);
 401         groupTreeView = new GroupTreeView(groupTreeViewModel);
 402         treeViews.add(groupTreeView);
 403
 404         trees = new VerticalPanel();
 405         trees.setWidth("100%");
 406
 407
 408         HorizontalPanel treeHeader = new HorizontalPanel();
 409         treeHeader.addStyleName("pithos-treeHeader");
 410         treeHeader.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);
 411         treeHeader.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
 412         HorizontalPanel statistics = new HorizontalPanel();
 413         statistics.addStyleName("pithos-statistics");
 414         statistics.add(new HTML("Used:&nbsp;"));
 415         usedBytes = new HTML();
 416         statistics.add(usedBytes);
 417         statistics.add(new HTML("&nbsp;of&nbsp;"));
 418         totalBytes = new HTML();
 419         statistics.add(totalBytes);
 420         statistics.add(new HTML("&nbsp;("));
 421         usedPercent = new HTML();
 422         statistics.add(usedPercent);
 423         statistics.add(new HTML(")"));
 424         treeHeader.add(statistics);
 425         treeHeader.setCellHorizontalAlignment(statistics, HasHorizontalAlignment.ALIGN_LEFT);
 426         trees.add(treeHeader);
 427
 428         trees.add(folderTreeView);
 429         trees.add(groupTreeView);
 430         // Add the left and right panels to the split panel.
 431         splitPanel.setLeftWidget(trees);
 432         splitPanel.setRightWidget(inner);
 433         splitPanel.setSplitPosition("35%");
 434         splitPanel.setSize("100%", "100%");
 435         splitPanel.addStyleName("pithos-splitPanel");
 436         splitPanel.setWidth(contentWidth);
 437         outer.add(splitPanel);
 438         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 439
 440         if (!bareContent) {
 441                 statusPanel = new StatusPanel();
 442                 statusPanel.setWidth("100%");
 443                 outer.add(statusPanel);
 444                 outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 445         }
 446         else
 447                 splitPanel.addStyleName("pithos-splitPanel-noframe");
 448
 449         // Hook the window resize event, so that we can adjust the UI.
 450         Window.addResizeHandler(this);
 451         // Clear out the window's built-in margin, because we want to take
 452         // advantage of the entire client area.
 453         Window.setMargin("0px");
 454         // Finally, add the outer panel to the RootPanel, so that it will be
 455         // displayed.
 456         RootPanel.get().add(outer);
 457         // Call the window resized handler to get the initial sizes setup. Doing
 458         // this in a deferred command causes it to occur after all widgets'
 459         // sizes have been computed by the browser.
 460         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 461
 462             @Override
 463             public void execute() {
 464                 onWindowResized(Window.getClientHeight());
 465             }
 466         });
 467
 468         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 469             @Override
 470             public void execute() {
 471                 fetchAccount(new Command() {
 472
 473                                         @Override
 474                                         public void execute() {
 475                                 if (!account.hasHomeContainer())
 476                                     createHomeContainer(account, this);
 477                                 else if (!account.hasTrashContainer())
 478                                         createTrashContainer(this);
 479                                 else {
 480                                         for (Folder f : account.getContainers())
 481                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 482                                                         trash = f;
 483                                                         break;
 484                                                 }
 485                                     folderTreeViewModel.initialize(account, new Command() {
 486
 487                                                                 @Override
 488                                                                 public void execute() {
 489                                                     createMySharedTree();
 490                                                                 }
 491                                                         });
 492                                     groupTreeViewModel.initialize();
 493                                     showStatistics();
 494                                 }
 495                                         }
 496                                 });
 497             }
 498         });
 499
 500 //        Scheduler.get().scheduleDeferred(new Command() {
 501 //
 502 //                      @Override
 503 //                      public void execute() {
 504 //                              displayError("lalala");
 505 //
 506 //                      }
 507 //              });
 508     }
 509
 510     public void applyPermissions(Folder f) {
 511         if (f != null) {
 512                 if (f.isInTrash())
 513                         upload.setEnabled(false);
 514                 else {
 515                         Boolean[] perms = f.getPermissions().get(username);
 516                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 517                                 upload.setEnabled(true);
 518                         }
 519                         else
 520                                 upload.setEnabled(false);
 521                 }
 522         }
 523         else
 524                 upload.setEnabled(false);
 525         }
 526
 527         @SuppressWarnings({ "rawtypes", "unchecked" })
 528         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 529         selectedTree = _selectedTree;
 530
 531         for (Composite c : treeViews)
 532                 if (c.equals(selectedTree))
 533                         c.addStyleName("cellTreeWidget-selectedTree");
 534                 else
 535                         c.removeStyleName("cellTreeWidget-selectedTree");
 536
 537         for (SingleSelectionModel s : selectionModels)
 538             if (!s.equals(model))
 539                 s.setSelected(s.getSelectedObject(), false);
 540     }
 541
 542     public void showFiles(Folder f) {
 543         Set<File> files = f.getFiles();
 544         showFiles(files);
 545     }
 546
 547     public void showFiles(Set<File> files) {
 548         //Iterator<File> iter = files.iterator();
 549         //fetchFile(iter, files);
 550         fileList.setFiles(new ArrayList<File>(files));
 551     }
 552
 553     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 554         if (iter.hasNext()) {
 555             File file = iter.next();
 556             String path = file.getUri() + "?format=json";
 557             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 558                 @Override
 559                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 560                     fetchFile(iter, files);
 561                 }
 562
 563                 @Override
 564                 public void onError(Throwable t) {
 565                     GWT.log("Error getting file", t);
 566                     if (t instanceof RestException)
 567                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 568                     else
 569                         displayError("System error fetching file: " + t.getMessage());
 570                 }
 571
 572                                 @Override
 573                                 protected void onUnauthorized(Response response) {
 574                                         sessionExpired();
 575                                 }
 576             };
 577             getFile.setHeader("X-Auth-Token", "0000");
 578             Scheduler.get().scheduleDeferred(getFile);
 579         }
 580         else
 581             fileList.setFiles(new ArrayList<File>(files));
 582     }
 583
 584     /**
 585          * Parse and store the user credentials to the appropriate fields.
 586          */
 587         private boolean parseUserCredentials() {
 588         username = Window.Location.getParameter("user");
 589         token = Window.Location.getParameter("token");
 590         Configuration conf = (Configuration) GWT.create(Configuration.class);
 591         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 592             String cookie = conf.authCookie();
 593             String auth = Cookies.getCookie(cookie);
 594             if (auth == null) {
 595                 authenticateUser();
 596                 return false;
 597             }
 598             if (auth.startsWith("\""))
 599                 auth = auth.substring(1);
 600             if (auth.endsWith("\""))
 601                 auth = auth.substring(0, auth.length() - 1);
 602                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 603                         if (authSplit.length != 2) {
 604                             authenticateUser();
 605                             return false;
 606                         }
 607                         username = authSplit[0];
 608                         token = authSplit[1];
 609                         return true;
 610         }
 611
 612                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token, null, "", "/", false);
 613                 return true;
 614     }
 615
 616     /**
 617          * Redirect the user to the login page for authentication.
 618          */
 619         protected void authenticateUser() {
 620                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 621         Window.Location.assign(conf.loginUrl() + "?next=" + Window.Location.getHref());
 622         }
 623
 624         protected void fetchAccount(final Command callback) {
 625         String path = "?format=json";
 626
 627         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 628             @Override
 629             public void onSuccess(AccountResource _result) {
 630                 account = _result;
 631                 if (callback != null)
 632                         callback.execute();
 633             }
 634
 635             @Override
 636             public void onError(Throwable t) {
 637                 GWT.log("Error getting account", t);
 638                 if (t instanceof RestException)
 639                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 640                 else
 641                     displayError("System error fetching user data: " + t.getMessage());
 642             }
 643
 644                         @Override
 645                         protected void onUnauthorized(Response response) {
 646                                 sessionExpired();
 647                         }
 648         };
 649         getAccount.setHeader("X-Auth-Token", token);
 650         Scheduler.get().scheduleDeferred(getAccount);
 651     }
 652
 653     public void updateStatistics() {
 654         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 655
 656                         @Override
 657                         public void onSuccess(@SuppressWarnings("unused") AccountResource _result) {
 658                                 showStatistics();
 659                         }
 660
 661                         @Override
 662                         public void onError(Throwable t) {
 663                 GWT.log("Error getting account", t);
 664                 if (t instanceof RestException)
 665                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 666                 else
 667                     displayError("System error fetching user data: " + t.getMessage());
 668                         }
 669
 670                         @Override
 671                         protected void onUnauthorized(Response response) {
 672                                 sessionExpired();
 673                         }
 674                 };
 675                 headAccount.setHeader("X-Auth-Token", token);
 676                 Scheduler.get().scheduleDeferred(headAccount);
 677         }
 678
 679         protected void showStatistics() {
 680         usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
 681         totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
 682         NumberFormat nf = NumberFormat.getPercentFormat();
 683         usedPercent.setHTML(nf.format(account.getUsedPercentage()));
 684         }
 685
 686         protected void createHomeContainer(final AccountResource _account, final Command callback) {
 687         String path = "/" + Pithos.HOME_CONTAINER;
 688         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 689             @Override
 690             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 691                 if (!_account.hasTrashContainer())
 692                         createTrashContainer(callback);
 693                 else
 694                         fetchAccount(callback);
 695             }
 696
 697             @Override
 698             public void onError(Throwable t) {
 699                 GWT.log("Error creating pithos", t);
 700                 if (t instanceof RestException)
 701                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 702                 else
 703                     displayError("System error Error creating pithos: " + t.getMessage());
 704             }
 705
 706                         @Override
 707                         protected void onUnauthorized(Response response) {
 708                                 sessionExpired();
 709                         }
 710         };
 711         createPithos.setHeader("X-Auth-Token", getToken());
 712         Scheduler.get().scheduleDeferred(createPithos);
 713     }
 714
 715     protected void createTrashContainer(final Command callback) {
 716         String path = "/" + Pithos.TRASH_CONTAINER;
 717         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 718             @Override
 719             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 720                         fetchAccount(callback);
 721             }
 722
 723             @Override
 724             public void onError(Throwable t) {
 725                 GWT.log("Error creating pithos", t);
 726                 if (t instanceof RestException)
 727                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 728                 else
 729                     displayError("System error Error creating pithos: " + t.getMessage());
 730             }
 731
 732                         @Override
 733                         protected void onUnauthorized(Response response) {
 734                                 sessionExpired();
 735                         }
 736         };
 737         createPithos.setHeader("X-Auth-Token", getToken());
 738         Scheduler.get().scheduleDeferred(createPithos);
 739     }
 740
 741     /**
 742          * Creates an HTML fragment that places an image & caption together, for use
 743          * in a group header.
 744          *
 745          * @param imageProto an image prototype for an image
 746          * @param caption the group caption
 747          * @return the header HTML fragment
 748          */
 749         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 750                 String captionHTML = "<table class='caption' cellpadding='0' "
 751                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 752                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 753                 + caption + "</b></td></tr></table>";
 754                 return captionHTML;
 755         }
 756
 757         protected void onWindowResized(int height) {
 758                 // Adjust the split panel to take up the available room in the window.
 759                 int newHeight = height - splitPanel.getAbsoluteTop();
 760                 if (newHeight < 1)
 761                         newHeight = 1;
 762                 splitPanel.setHeight("" + newHeight);
 763                 inner.setHeight("" + newHeight);
 764         }
 765
 766         @Override
 767         public void onResize(ResizeEvent event) {
 768                 int height = event.getHeight();
 769                 onWindowResized(height);
 770         }
 771
 772         /**
 773          * Display an error message.
 774          *
 775          * @param msg the message to display
 776          */
 777         public void displayError(String msg) {
 778                 messagePanel.displayError(msg);
 779         }
 780
 781         /**
 782          * Display a warning message.
 783          *
 784          * @param msg the message to display
 785          */
 786         public void displayWarning(String msg) {
 787                 messagePanel.displayWarning(msg);
 788         }
 789
 790         /**
 791          * Display an informational message.
 792          *
 793          * @param msg the message to display
 794          */
 795         public void displayInformation(String msg) {
 796                 messagePanel.displayInformation(msg);
 797         }
 798
 799         /**
 800          * Retrieve the fileList.
 801          *
 802          * @return the fileList
 803          */
 804         public FileList getFileList() {
 805                 return fileList;
 806         }
 807
 808         /**
 809          * Retrieve the topPanel.
 810          *
 811          * @return the topPanel
 812          */
 813         TopPanel getTopPanel() {
 814                 return topPanel;
 815         }
 816
 817         /**
 818          * Retrieve the clipboard.
 819          *
 820          * @return the clipboard
 821          */
 822         public Clipboard getClipboard() {
 823                 return clipboard;
 824         }
 825
 826         public StatusPanel getStatusPanel() {
 827                 return statusPanel;
 828         }
 829
 830         public String getToken() {
 831                 return token;
 832         }
 833
 834         public static native void preventIESelection() /*-{
 835                 $doc.body.onselectstart = function () { return false; };
 836         }-*/;
 837
 838         public static native void enableIESelection() /*-{
 839                 if ($doc.body.onselectstart != null)
 840                 $doc.body.onselectstart = null;
 841         }-*/;
 842
 843         /**
 844          * @return the absolute path of the API root URL
 845          */
 846         public String getApiPath() {
 847                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 848                 return conf.apiPath();
 849         }
 850
 851         /**
 852          * History support for folder navigation
 853          * adds a new browser history entry
 854          *
 855          * @param key
 856          */
 857         public void updateHistory(String key){
 858 //              Replace any whitespace of the initial string to "+"
 859 //              String result = key.replaceAll("\\s","+");
 860 //              Add a new browser history entry.
 861 //              History.newItem(result);
 862                 History.newItem(key);
 863         }
 864
 865     public void deleteFolder(final Folder folder) {
 866         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(folder.getPrefix()) + "&t=" + System.currentTimeMillis();
 867         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 868         builder.setHeader("X-Auth-Token", getToken());
 869         try {
 870             builder.sendRequest("", new RequestCallback() {
 871                 @Override
 872                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 873                     if (response.getStatusCode() == Response.SC_OK) {
 874                         JSONValue json = JSONParser.parseStrict(response.getText());
 875                         JSONArray array = json.isArray();
 876                         int i = 0;
 877                         if (array != null) {
 878                             deleteObject(folder, i, array);
 879                         }
 880                     }
 881                 }
 882
 883                 @Override
 884                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 885                     displayError("System error unable to delete folder: " + exception.getMessage());
 886                 }
 887             });
 888         }
 889         catch (RequestException e) {
 890         }
 891     }
 892
 893     void deleteObject(final Folder folder, final int i, final JSONArray array) {
 894         if (i < array.size()) {
 895             JSONObject o = array.get(i).isObject();
 896             if (o != null && !o.containsKey("subdir")) {
 897                 JSONString name = o.get("name").isString();
 898                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 899                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
 900                     @Override
 901                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 902                         deleteObject(folder, i + 1, array);
 903                     }
 904
 905                     @Override
 906                     public void onError(Throwable t) {
 907                         GWT.log("", t);
 908                         displayError("System error unable to delete folder: " + t.getMessage());
 909                     }
 910
 911                                 @Override
 912                                 protected void onUnauthorized(Response response) {
 913                                         sessionExpired();
 914                                 }
 915                 };
 916                 delete.setHeader("X-Auth-Token", getToken());
 917                 Scheduler.get().scheduleDeferred(delete);
 918             }
 919             else if (o != null) {
 920                 String subdir = o.get("subdir").isString().stringValue();
 921                 subdir = subdir.substring(0, subdir.length() - 1);
 922                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(subdir) + "&t=" + System.currentTimeMillis();
 923                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 924                 builder.setHeader("X-Auth-Token", getToken());
 925                 try {
 926                     builder.sendRequest("", new RequestCallback() {
 927                         @Override
 928                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 929                             if (response.getStatusCode() == Response.SC_OK) {
 930                                 JSONValue json = JSONParser.parseStrict(response.getText());
 931                                 JSONArray array2 = json.isArray();
 932                                 if (array2 != null) {
 933                                     int l = array.size();
 934                                     for (int j=0; j<array2.size(); j++) {
 935                                         array.set(l++, array2.get(j));
 936                                     }
 937                                 }
 938                                 deleteObject(folder, i + 1, array);
 939                             }
 940                         }
 941
 942                         @Override
 943                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 944                             displayError("System error unable to delete folder: " + exception.getMessage());
 945                         }
 946                     });
 947                 }
 948                 catch (RequestException e) {
 949                 }
 950             }
 951         }
 952         else {
 953             String path = folder.getUri();
 954             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 955                 @Override
 956                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 957                     updateFolder(folder.getParent(), true, new Command() {
 958
 959                                                 @Override
 960                                                 public void execute() {
 961                                                         updateStatistics();
 962                                                 }
 963                                         });
 964                 }
 965
 966                 @Override
 967                 public void onError(Throwable t) {
 968                     GWT.log("", t);
 969                     if (t instanceof RestException) {
 970                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 971                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 972                         else
 973                                 onSuccess(null);
 974                     }
 975                     else
 976                         displayError("System error unable to delete folder: " + t.getMessage());
 977                 }
 978
 979                                 @Override
 980                                 protected void onUnauthorized(Response response) {
 981                                         sessionExpired();
 982                                 }
 983             };
 984             deleteFolder.setHeader("X-Auth-Token", getToken());
 985             Scheduler.get().scheduleDeferred(deleteFolder);
 986         }
 987     }
 988
 989     public FolderTreeView getFolderTreeView() {
 990         return folderTreeView;
 991     }
 992
 993     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 994         if (iter.hasNext()) {
 995             File file = iter.next();
 996             String path = targetUri + "/" + file.getName();
 997             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 998                 @Override
 999                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
1000                     copyFiles(iter, targetUsername, targetUri, callback);
1001                 }
1002
1003                 @Override
1004                 public void onError(Throwable t) {
1005                     GWT.log("", t);
1006                     if (t instanceof RestException) {
1007                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
1008                     }
1009                     else
1010                         displayError("System error unable to copy file: "+t.getMessage());
1011                 }
1012
1013                                 @Override
1014                                 protected void onUnauthorized(Response response) {
1015                                         sessionExpired();
1016                                 }
1017             };
1018             copyFile.setHeader("X-Auth-Token", getToken());
1019             copyFile.setHeader("X-Copy-From", URL.encodePathSegment(file.getUri()));
1020             if (!file.getOwner().equals(targetUsername))
1021                 copyFile.setHeader("X-Source-Account", URL.encodePathSegment(file.getOwner()));
1022             copyFile.setHeader("Content-Type", file.getContentType());
1023             Scheduler.get().scheduleDeferred(copyFile);
1024         }
1025         else  if (callback != null) {
1026             callback.execute();
1027         }
1028     }
1029
1030     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
1031         if (iter.hasNext()) {
1032             final Folder f = iter.next();
1033             copyFolder(f, targetUsername, targetUri, new Command() {
1034
1035                                 @Override
1036                                 public void execute() {
1037                                         copySubfolders(iter, targetUsername, targetUri, callback);
1038                                 }
1039                         });
1040         }
1041         else  if (callback != null) {
1042             callback.execute();
1043         }
1044     }
1045
1046     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
1047         String path = targetUri + "/" + f.getName();
1048         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
1049             @Override
1050             public void onSuccess(@SuppressWarnings("unused") Resource result) {
1051                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix()), f) {
1052
1053                                         @Override
1054                                         public void onSuccess(final Folder _f) {
1055                                 Iterator<File> iter = _f.getFiles().iterator();
1056                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
1057                                     @Override
1058                                     public void execute() {
1059                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
1060                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
1061                                     }
1062                                 });
1063                                         }
1064
1065                                         @Override
1066                                         public void onError(Throwable t) {
1067                                 GWT.log("", t);
1068                                 if (t instanceof RestException) {
1069                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
1070                                 }
1071                                 else
1072                                     displayError("System error getting folder: " + t.getMessage());
1073                                         }
1074
1075                                         @Override
1076                                         protected void onUnauthorized(Response response) {
1077                                                 sessionExpired();
1078                                         }
1079                                 };
1080                                 getFolder.setHeader("X-Auth-Token", getToken());
1081                                 Scheduler.get().scheduleDeferred(getFolder);
1082             }
1083
1084             @Override
1085             public void onError(Throwable t) {
1086                 GWT.log("", t);
1087                 if (t instanceof RestException) {
1088                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
1089                 }
1090                 else
1091                     displayError("System error creating folder: " + t.getMessage());
1092             }
1093
1094                         @Override
1095                         protected void onUnauthorized(Response response) {
1096                                 sessionExpired();
1097                         }
1098         };
1099         createFolder.setHeader("X-Auth-Token", getToken());
1100         createFolder.setHeader("Accept", "*/*");
1101         createFolder.setHeader("Content-Length", "0");
1102         createFolder.setHeader("Content-Type", "application/folder");
1103         Scheduler.get().scheduleDeferred(createFolder);
1104     }
1105
1106     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1107         selectionModels.add(model);
1108     }
1109
1110         public OtherSharedTreeView getOtherSharedTreeView() {
1111                 return otherSharedTreeView;
1112         }
1113
1114         public void updateTrash(boolean showFiles, Command callback) {
1115                 updateFolder(trash, showFiles, callback);
1116         }
1117
1118         public void updateGroupsNode() {
1119                 groupTreeView.updateGroupNode(null);
1120         }
1121
1122         public void addGroup(String groupname) {
1123                 Group newGroup = new Group(groupname);
1124                 account.addGroup(newGroup);
1125                 groupTreeView.updateGroupNode(null);
1126         }
1127
1128         public void removeGroup(Group group) {
1129                 account.removeGroup(group);
1130                 updateGroupsNode();
1131         }
1132
1133         public TreeView getSelectedTree() {
1134                 return selectedTree;
1135         }
1136
1137         public Folder getSelection() {
1138                 return selectedTree.getSelection();
1139         }
1140
1141         public void showFolderStatistics(int folderFileCount) {
1142                 numOfFiles.setHTML(String.valueOf(folderFileCount));
1143         }
1144
1145         public GroupTreeView getGroupTreeView() {
1146                 return groupTreeView;
1147         }
1148
1149         public void sessionExpired() {
1150                 new SessionExpiredDialog(this).center();
1151         }
1152
1153         public void updateRootFolder(Command callback) {
1154                 updateFolder(account.getPithos(), false, callback);
1155         }
1156
1157         void createMySharedTree() {
1158                 mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1159                 mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1160                     @Override
1161                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1162                         if (mysharedTreeSelectionModel.getSelectedObject() != null) {
1163                             deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1164                             upload.setEnabled(false);
1165                             updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1166                         }
1167                     }
1168                 });
1169                 selectionModels.add(mysharedTreeSelectionModel);
1170                 mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1171                 mysharedTreeViewModel.initialize(new Command() {
1172
1173                         @Override
1174                         public void execute() {
1175                             mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1176                                 trees.insert(mysharedTreeView, 2);
1177                                 treeViews.add(mysharedTreeView);
1178                                 createOtherSharedTree();
1179                         }
1180                 });
1181         }
1182
1183         void createOtherSharedTree() {
1184                 otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1185                 otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1186                     @Override
1187                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1188                         if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
1189                             deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1190                             otherSharedTreeView.addStyleName("cellTreeWidget-selectedTree");
1191                             applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1192                             updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
1193                         }
1194                     }
1195                 });
1196                 selectionModels.add(otherSharedTreeSelectionModel);
1197                 otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1198                 otherSharedTreeViewModel.initialize(new Command() {
1199
1200                         @Override
1201                         public void execute() {
1202                             otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1203                                 trees.insert(otherSharedTreeView, 3);
1204                                 treeViews.add(otherSharedTreeView);
1205                         }
1206                 });
1207         }
1208
1209         public void logoff() {
1210         Configuration conf = (Configuration) GWT.create(Configuration.class);
1211                 Cookies.removeCookie(conf.authCookie(), "/");
1212                 Cookies.removeCookie(conf.authTokenCookie(), "/");
1213                 for (String s: Cookies.getCookieNames())
1214                         if (s.startsWith(conf.shibSessionCookiePrefix()))
1215                                 Cookies.removeCookie(s, "/");
1216                 Window.Location.assign(Window.Location.getPath());
1217         }
1218 }