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.user.client.Command;
  89 import com.google.gwt.user.client.Cookies;
  90 import com.google.gwt.user.client.Event;
  91 import com.google.gwt.user.client.History;
  92 import com.google.gwt.user.client.Window;
  93 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  94 import com.google.gwt.user.client.ui.Button;
  95 import com.google.gwt.user.client.ui.Composite;
  96 import com.google.gwt.user.client.ui.HTML;
  97 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  98 import com.google.gwt.user.client.ui.HasVerticalAlignment;
  99 import com.google.gwt.user.client.ui.HorizontalPanel;
 100 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
 101 import com.google.gwt.user.client.ui.RootPanel;
 102 import com.google.gwt.user.client.ui.VerticalPanel;
 103 import com.google.gwt.view.client.SelectionChangeEvent;
 104 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
 105 import com.google.gwt.view.client.SingleSelectionModel;
 106
 107 /**
 108  * Entry point classes define <code>onModuleLoad()</code>.
 109  */
 110 public class Pithos implements EntryPoint, ResizeHandler {
 111
 112         public static final String HOME_CONTAINER = "pithos";
 113
 114         public static final String TRASH_CONTAINER = "trash";
 115
 116         /**
 117          * Instantiate an application-level image bundle. This object will provide
 118          * programmatic access to all the images needed by widgets.
 119          */
 120         static Images images = (Images) GWT.create(Images.class);
 121
 122     public String getUsername() {
 123         return username;
 124     }
 125
 126     public void setAccount(AccountResource acct) {
 127         account = acct;
 128     }
 129
 130     public AccountResource getAccount() {
 131         return account;
 132     }
 133
 134     public void updateFolder(Folder f, boolean showfiles, Command callback) {
 135         folderTreeView.updateFolder(f, showfiles, callback);
 136     }
 137
 138     public void updateGroupNode(Group group) {
 139         groupTreeView.updateGroupNode(group);
 140     }
 141
 142     public void updateSharedFolder(Folder f, boolean showfiles) {
 143         mysharedTreeView.updateFolder(f, showfiles);
 144     }
 145
 146     public void updateOtherSharedFolder(Folder f, boolean showfiles) {
 147         otherSharedTreeView.updateFolder(f, showfiles);
 148     }
 149
 150     public List<Tag> getAllTags() {
 151         List<Tag> tagList = new ArrayList<Tag>();
 152         for (Folder f : account.getContainers()) {
 153             for (String t : f.getTags()) {
 154                 tagList.add(new Tag(t));
 155             }
 156         }
 157         return tagList;
 158     }
 159
 160     public MysharedTreeView getMySharedTreeView() {
 161         return mysharedTreeView;
 162     }
 163
 164     /**
 165          * An aggregate image bundle that pulls together all the images for this
 166          * application into a single bundle.
 167          */
 168         public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 169
 170                 @Source("gr/grnet/pithos/resources/document.png")
 171                 ImageResource folders();
 172
 173                 @Source("gr/grnet/pithos/resources/advancedsettings.png")
 174                 ImageResource tools();
 175         }
 176
 177         /**
 178          * The Application Clipboard implementation;
 179          */
 180         private Clipboard clipboard = new Clipboard();
 181
 182         /**
 183          * The top panel that contains the menu bar.
 184          */
 185         private TopPanel topPanel;
 186
 187         /**
 188          * The panel that contains the various system messages.
 189          */
 190         private MessagePanel messagePanel = new MessagePanel(Pithos.images);
 191
 192         /**
 193          * The bottom panel that contains the status bar.
 194          */
 195         private StatusPanel statusPanel = null;
 196
 197         /**
 198          * The file list widget.
 199          */
 200         private FileList fileList;
 201
 202         /**
 203          * The tab panel that occupies the right side of the screen.
 204          */
 205         private VerticalPanel inner = new VerticalPanel();
 206
 207
 208         /**
 209          * The split panel that will contain the left and right panels.
 210          */
 211         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 212
 213         /**
 214          * The currently selected item in the application, for use by the Edit menu
 215          * commands. Potential types are Folder, File, User and Group.
 216          */
 217         private Object currentSelection;
 218
 219         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 220
 221     private String username = null;
 222
 223     /**
 224      * The authentication token of the current user.
 225      */
 226     private String token;
 227
 228     VerticalPanel trees;
 229
 230     SingleSelectionModel<Folder> folderTreeSelectionModel;
 231     FolderTreeViewModel folderTreeViewModel;
 232     FolderTreeView folderTreeView;
 233
 234     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 235     MysharedTreeViewModel mysharedTreeViewModel;
 236     MysharedTreeView mysharedTreeView = null;;
 237
 238     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 239     OtherSharedTreeViewModel otherSharedTreeViewModel;
 240     OtherSharedTreeView otherSharedTreeView = null;
 241
 242     GroupTreeViewModel groupTreeViewModel;
 243     private GroupTreeView groupTreeView;
 244
 245     private TreeView selectedTree;
 246     protected AccountResource account;
 247
 248     Folder trash;
 249
 250     List<Composite> treeViews = new ArrayList<Composite>();
 251
 252     @SuppressWarnings("rawtypes") List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 253
 254     Button upload;
 255
 256     private HTML totalFiles;
 257
 258     private HTML usedBytes;
 259
 260     private HTML totalBytes;
 261
 262     private HTML usedPercent;
 263
 264     private HTML numOfFiles;
 265
 266     private Button toolsButton;
 267
 268         @Override
 269         public void onModuleLoad() {
 270                 if (parseUserCredentials())
 271             initialize();
 272         }
 273
 274     private void initialize() {
 275         boolean bareContent = Window.Location.getParameter("noframe") != null;
 276         String contentWidth = bareContent ? "100%" : "75%";
 277
 278         VerticalPanel outer = new VerticalPanel();
 279         outer.setWidth("100%");
 280         if (!bareContent) {
 281                 outer.addStyleName("pithos-outer");
 282         }
 283
 284         if (!bareContent) {
 285                 topPanel = new TopPanel(this, Pithos.images);
 286                 topPanel.setWidth("100%");
 287                 outer.add(topPanel);
 288                 outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 289         }
 290
 291         HorizontalPanel header = new HorizontalPanel();
 292         header.addStyleName("pithos-header");
 293         header.setWidth(contentWidth);
 294         if (bareContent)
 295                 header.addStyleName("pithos-header-noframe");
 296         upload = new Button("Upload File", new ClickHandler() {
 297             @Override
 298             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 299                 new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 300             }
 301         });
 302         upload.addStyleName("pithos-uploadButton");
 303         header.add(upload);
 304         header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 305         header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 306         header.setCellWidth(upload, "146px");
 307
 308         messagePanel.setVisible(false);
 309         header.add(messagePanel);
 310         header.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 311         header.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
 312
 313
 314         toolsButton = new Button(AbstractImagePrototype.create(images.tools()).getHTML());
 315         toolsButton.addClickHandler(new ClickHandler() {
 316
 317                         @Override
 318                         public void onClick(ClickEvent event) {
 319                 ToolsMenu menu = new ToolsMenu(Pithos.this, images, getSelectedTree(), getSelectedTree().getSelection(), getFileList().getSelectedFiles());
 320                 if (!menu.isEmpty()) {
 321                             menu.setPopupPosition(event.getClientX(), event.getClientY());
 322                             menu.show();
 323                 }
 324                         }
 325                 });
 326         header.add(toolsButton);
 327         header.setCellHorizontalAlignment(toolsButton, HasHorizontalAlignment.ALIGN_RIGHT);
 328         header.setCellVerticalAlignment(toolsButton, HasVerticalAlignment.ALIGN_MIDDLE);
 329         header.setCellWidth(toolsButton, "30px");
 330
 331         HorizontalPanel folderStatistics = new HorizontalPanel();
 332         folderStatistics.addStyleName("pithos-folderStatistics");
 333         numOfFiles = new HTML();
 334         folderStatistics.add(numOfFiles);
 335         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 336         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 337         folderStatistics.add(numOfFilesLabel);
 338         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 339         header.add(folderStatistics);
 340         header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 341         header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
 342         header.setCellWidth(folderStatistics, "60px");
 343         outer.add(header);
 344         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 345         // Inner contains the various lists.nner
 346         inner.sinkEvents(Event.ONCONTEXTMENU);
 347         inner.setWidth("100%");
 348
 349         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 350         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 351             @Override
 352             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 353                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 354                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 355                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 356                     Folder f = folderTreeSelectionModel.getSelectedObject();
 357                     showFiles(f);
 358                 }
 359             }
 360         });
 361         selectionModels.add(folderTreeSelectionModel);
 362
 363         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 364         folderTreeView = new FolderTreeView(folderTreeViewModel);
 365         treeViews.add(folderTreeView);
 366
 367         fileList = new FileList(this, images, folderTreeView);
 368         inner.add(fileList);
 369
 370         groupTreeViewModel = new GroupTreeViewModel(this);
 371         groupTreeView = new GroupTreeView(groupTreeViewModel);
 372         treeViews.add(groupTreeView);
 373
 374         trees = new VerticalPanel();
 375         trees.setWidth("100%");
 376
 377
 378         HorizontalPanel treeHeader = new HorizontalPanel();
 379         treeHeader.addStyleName("pithos-treeHeader");
 380         treeHeader.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);
 381         treeHeader.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
 382         HorizontalPanel statistics = new HorizontalPanel();
 383         statistics.addStyleName("pithos-statistics");
 384         statistics.add(new HTML("Total Objects:&nbsp;"));
 385         totalFiles = new HTML();
 386         statistics.add(totalFiles);
 387         statistics.add(new HTML("&nbsp;|&nbsp;Used:&nbsp;"));
 388         usedBytes = new HTML();
 389         statistics.add(usedBytes);
 390         statistics.add(new HTML("&nbsp;of&nbsp;"));
 391         totalBytes = new HTML();
 392         statistics.add(totalBytes);
 393         statistics.add(new HTML("&nbsp;("));
 394         usedPercent = new HTML();
 395         statistics.add(usedPercent);
 396         statistics.add(new HTML(")"));
 397         treeHeader.add(statistics);
 398         treeHeader.setCellHorizontalAlignment(statistics, HasHorizontalAlignment.ALIGN_LEFT);
 399         trees.add(treeHeader);
 400
 401         trees.add(folderTreeView);
 402         trees.add(groupTreeView);
 403         // Add the left and right panels to the split panel.
 404         splitPanel.setLeftWidget(trees);
 405         splitPanel.setRightWidget(inner);
 406         splitPanel.setSplitPosition("35%");
 407         splitPanel.setSize("100%", "100%");
 408         splitPanel.addStyleName("pithos-splitPanel");
 409         splitPanel.setWidth(contentWidth);
 410         outer.add(splitPanel);
 411         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 412
 413         if (!bareContent) {
 414                 statusPanel = new StatusPanel();
 415                 statusPanel.setWidth("100%");
 416                 outer.add(statusPanel);
 417                 outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 418         }
 419         else
 420                 splitPanel.addStyleName("pithos-splitPanel-noframe");
 421
 422         // Hook the window resize event, so that we can adjust the UI.
 423         Window.addResizeHandler(this);
 424         // Clear out the window's built-in margin, because we want to take
 425         // advantage of the entire client area.
 426         Window.setMargin("0px");
 427         // Finally, add the outer panel to the RootPanel, so that it will be
 428         // displayed.
 429         RootPanel.get().add(outer);
 430         // Call the window resized handler to get the initial sizes setup. Doing
 431         // this in a deferred command causes it to occur after all widgets'
 432         // sizes have been computed by the browser.
 433         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 434
 435             @Override
 436             public void execute() {
 437                 onWindowResized(Window.getClientHeight());
 438             }
 439         });
 440
 441         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 442             @Override
 443             public void execute() {
 444                 fetchAccount(new Command() {
 445
 446                                         @Override
 447                                         public void execute() {
 448                                 if (!account.hasHomeContainer())
 449                                     createHomeContainer(account, this);
 450                                 else if (!account.hasTrashContainer())
 451                                         createTrashContainer(this);
 452                                 else {
 453                                         for (Folder f : account.getContainers())
 454                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 455                                                         trash = f;
 456                                                         break;
 457                                                 }
 458                                     folderTreeViewModel.initialize(account, new Command() {
 459
 460                                                                 @Override
 461                                                                 public void execute() {
 462                                                     createMySharedTree();
 463                                                                 }
 464                                                         });
 465                                     groupTreeViewModel.initialize();
 466                                     showStatistics();
 467                                 }
 468                                         }
 469                                 });
 470             }
 471         });
 472
 473 //        Scheduler.get().scheduleDeferred(new Command() {
 474 //
 475 //                      @Override
 476 //                      public void execute() {
 477 //                              displayError("lalala");
 478 //
 479 //                      }
 480 //              });
 481     }
 482
 483     public void applyPermissions(Folder f) {
 484         if (f != null) {
 485                 if (f.isInTrash())
 486                         upload.setEnabled(false);
 487                 else {
 488                         Boolean[] perms = f.getPermissions().get(username);
 489                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 490                                 upload.setEnabled(true);
 491                         }
 492                         else
 493                                 upload.setEnabled(false);
 494                 }
 495         }
 496         else
 497                 upload.setEnabled(false);
 498         }
 499
 500         @SuppressWarnings({ "rawtypes", "unchecked" })
 501         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 502         selectedTree = _selectedTree;
 503
 504         for (Composite c : treeViews)
 505                 if (c.equals(selectedTree))
 506                         c.addStyleName("cellTreeWidget-selectedTree");
 507                 else
 508                         c.removeStyleName("cellTreeWidget-selectedTree");
 509
 510         for (SingleSelectionModel s : selectionModels)
 511             if (!s.equals(model))
 512                 s.setSelected(s.getSelectedObject(), false);
 513     }
 514
 515     public void showFiles(Folder f) {
 516         Set<File> files = f.getFiles();
 517         showFiles(files);
 518     }
 519
 520     public void showFiles(Set<File> files) {
 521         //Iterator<File> iter = files.iterator();
 522         //fetchFile(iter, files);
 523         fileList.setFiles(new ArrayList<File>(files));
 524     }
 525
 526     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 527         if (iter.hasNext()) {
 528             File file = iter.next();
 529             String path = file.getUri() + "?format=json";
 530             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 531                 @Override
 532                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 533                     fetchFile(iter, files);
 534                 }
 535
 536                 @Override
 537                 public void onError(Throwable t) {
 538                     GWT.log("Error getting file", t);
 539                     if (t instanceof RestException)
 540                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 541                     else
 542                         displayError("System error fetching file: " + t.getMessage());
 543                 }
 544
 545                                 @Override
 546                                 protected void onUnauthorized(Response response) {
 547                                         sessionExpired();
 548                                 }
 549             };
 550             getFile.setHeader("X-Auth-Token", "0000");
 551             Scheduler.get().scheduleDeferred(getFile);
 552         }
 553         else
 554             fileList.setFiles(new ArrayList<File>(files));
 555     }
 556
 557     /**
 558          * Parse and store the user credentials to the appropriate fields.
 559          */
 560         private boolean parseUserCredentials() {
 561         username = Window.Location.getParameter("user");
 562         token = Window.Location.getParameter("token");
 563         Configuration conf = (Configuration) GWT.create(Configuration.class);
 564         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 565             String cookie = conf.authCookie();
 566             String auth = Cookies.getCookie(cookie);
 567             if (auth == null) {
 568                 authenticateUser();
 569                 return false;
 570             }
 571                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 572                         if (authSplit.length != 2) {
 573                             authenticateUser();
 574                             return false;
 575                         }
 576                         username = authSplit[0];
 577                         token = authSplit[1];
 578                         return true;
 579         }
 580
 581                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token, null, "", "/", false);
 582                 return true;
 583     }
 584
 585     /**
 586          * Redirect the user to the login page for authentication.
 587          */
 588         protected void authenticateUser() {
 589                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 590         Window.Location.assign(conf.loginUrl() + "?next=" + Window.Location.getHref());
 591         }
 592
 593         protected void fetchAccount(final Command callback) {
 594         String path = "?format=json";
 595
 596         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 597             @Override
 598             public void onSuccess(AccountResource _result) {
 599                 account = _result;
 600                 if (callback != null)
 601                         callback.execute();
 602             }
 603
 604             @Override
 605             public void onError(Throwable t) {
 606                 GWT.log("Error getting account", t);
 607                 if (t instanceof RestException)
 608                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 609                 else
 610                     displayError("System error fetching user data: " + t.getMessage());
 611             }
 612
 613                         @Override
 614                         protected void onUnauthorized(Response response) {
 615                                 sessionExpired();
 616                         }
 617         };
 618         getAccount.setHeader("X-Auth-Token", token);
 619         Scheduler.get().scheduleDeferred(getAccount);
 620     }
 621
 622     public void updateStatistics() {
 623         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 624
 625                         @Override
 626                         public void onSuccess(@SuppressWarnings("unused") AccountResource _result) {
 627                                 showStatistics();
 628                         }
 629
 630                         @Override
 631                         public void onError(Throwable t) {
 632                 GWT.log("Error getting account", t);
 633                 if (t instanceof RestException)
 634                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 635                 else
 636                     displayError("System error fetching user data: " + t.getMessage());
 637                         }
 638
 639                         @Override
 640                         protected void onUnauthorized(Response response) {
 641                                 sessionExpired();
 642                         }
 643                 };
 644                 headAccount.setHeader("X-Auth-Token", token);
 645                 Scheduler.get().scheduleDeferred(headAccount);
 646         }
 647
 648         protected void showStatistics() {
 649         totalFiles.setHTML(String.valueOf(account.getNumberOfObjects()));
 650         usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
 651         totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
 652         NumberFormat nf = NumberFormat.getPercentFormat();
 653         usedPercent.setHTML(nf.format(account.getUsedPercentage()));
 654         }
 655
 656         protected void createHomeContainer(final AccountResource _account, final Command callback) {
 657         String path = "/" + Pithos.HOME_CONTAINER;
 658         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 659             @Override
 660             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 661                 if (!_account.hasTrashContainer())
 662                         createTrashContainer(callback);
 663                 else
 664                         fetchAccount(callback);
 665             }
 666
 667             @Override
 668             public void onError(Throwable t) {
 669                 GWT.log("Error creating pithos", t);
 670                 if (t instanceof RestException)
 671                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 672                 else
 673                     displayError("System error Error creating pithos: " + t.getMessage());
 674             }
 675
 676                         @Override
 677                         protected void onUnauthorized(Response response) {
 678                                 sessionExpired();
 679                         }
 680         };
 681         createPithos.setHeader("X-Auth-Token", getToken());
 682         Scheduler.get().scheduleDeferred(createPithos);
 683     }
 684
 685     protected void createTrashContainer(final Command callback) {
 686         String path = "/" + Pithos.TRASH_CONTAINER;
 687         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 688             @Override
 689             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 690                         fetchAccount(callback);
 691             }
 692
 693             @Override
 694             public void onError(Throwable t) {
 695                 GWT.log("Error creating pithos", t);
 696                 if (t instanceof RestException)
 697                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 698                 else
 699                     displayError("System error Error creating pithos: " + t.getMessage());
 700             }
 701
 702                         @Override
 703                         protected void onUnauthorized(Response response) {
 704                                 sessionExpired();
 705                         }
 706         };
 707         createPithos.setHeader("X-Auth-Token", getToken());
 708         Scheduler.get().scheduleDeferred(createPithos);
 709     }
 710
 711     /**
 712          * Creates an HTML fragment that places an image & caption together, for use
 713          * in a group header.
 714          *
 715          * @param imageProto an image prototype for an image
 716          * @param caption the group caption
 717          * @return the header HTML fragment
 718          */
 719         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 720                 String captionHTML = "<table class='caption' cellpadding='0' "
 721                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 722                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 723                 + caption + "</b></td></tr></table>";
 724                 return captionHTML;
 725         }
 726
 727         protected void onWindowResized(int height) {
 728                 // Adjust the split panel to take up the available room in the window.
 729                 int newHeight = height - splitPanel.getAbsoluteTop();
 730                 if (newHeight < 1)
 731                         newHeight = 1;
 732                 splitPanel.setHeight("" + newHeight);
 733                 inner.setHeight("" + newHeight);
 734         }
 735
 736         @Override
 737         public void onResize(ResizeEvent event) {
 738                 int height = event.getHeight();
 739                 onWindowResized(height);
 740         }
 741
 742         /**
 743          * Display an error message.
 744          *
 745          * @param msg the message to display
 746          */
 747         public void displayError(String msg) {
 748                 messagePanel.displayError(msg);
 749         }
 750
 751         /**
 752          * Display a warning message.
 753          *
 754          * @param msg the message to display
 755          */
 756         public void displayWarning(String msg) {
 757                 messagePanel.displayWarning(msg);
 758         }
 759
 760         /**
 761          * Display an informational message.
 762          *
 763          * @param msg the message to display
 764          */
 765         public void displayInformation(String msg) {
 766                 messagePanel.displayInformation(msg);
 767         }
 768
 769         /**
 770          * Retrieve the fileList.
 771          *
 772          * @return the fileList
 773          */
 774         public FileList getFileList() {
 775                 return fileList;
 776         }
 777
 778         /**
 779          * Retrieve the topPanel.
 780          *
 781          * @return the topPanel
 782          */
 783         TopPanel getTopPanel() {
 784                 return topPanel;
 785         }
 786
 787         /**
 788          * Retrieve the clipboard.
 789          *
 790          * @return the clipboard
 791          */
 792         public Clipboard getClipboard() {
 793                 return clipboard;
 794         }
 795
 796         public StatusPanel getStatusPanel() {
 797                 return statusPanel;
 798         }
 799
 800         public String getToken() {
 801                 return token;
 802         }
 803
 804         public static native void preventIESelection() /*-{
 805                 $doc.body.onselectstart = function () { return false; };
 806         }-*/;
 807
 808         public static native void enableIESelection() /*-{
 809                 if ($doc.body.onselectstart != null)
 810                 $doc.body.onselectstart = null;
 811         }-*/;
 812
 813         /**
 814          * @return the absolute path of the API root URL
 815          */
 816         public String getApiPath() {
 817                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 818                 return conf.apiPath();
 819         }
 820
 821         /**
 822          * History support for folder navigation
 823          * adds a new browser history entry
 824          *
 825          * @param key
 826          */
 827         public void updateHistory(String key){
 828 //              Replace any whitespace of the initial string to "+"
 829 //              String result = key.replaceAll("\\s","+");
 830 //              Add a new browser history entry.
 831 //              History.newItem(result);
 832                 History.newItem(key);
 833         }
 834
 835     public void deleteFolder(final Folder folder) {
 836         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(folder.getPrefix()) + "&t=" + System.currentTimeMillis();
 837         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 838         builder.setHeader("X-Auth-Token", getToken());
 839         try {
 840             builder.sendRequest("", new RequestCallback() {
 841                 @Override
 842                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 843                     if (response.getStatusCode() == Response.SC_OK) {
 844                         JSONValue json = JSONParser.parseStrict(response.getText());
 845                         JSONArray array = json.isArray();
 846                         int i = 0;
 847                         if (array != null) {
 848                             deleteObject(folder, i, array);
 849                         }
 850                     }
 851                 }
 852
 853                 @Override
 854                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 855                     displayError("System error unable to delete folder: " + exception.getMessage());
 856                 }
 857             });
 858         }
 859         catch (RequestException e) {
 860         }
 861     }
 862
 863     void deleteObject(final Folder folder, final int i, final JSONArray array) {
 864         if (i < array.size()) {
 865             JSONObject o = array.get(i).isObject();
 866             if (o != null && !o.containsKey("subdir")) {
 867                 JSONString name = o.get("name").isString();
 868                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 869                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
 870                     @Override
 871                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 872                         deleteObject(folder, i + 1, array);
 873                     }
 874
 875                     @Override
 876                     public void onError(Throwable t) {
 877                         GWT.log("", t);
 878                         displayError("System error unable to delete folder: " + t.getMessage());
 879                     }
 880
 881                                 @Override
 882                                 protected void onUnauthorized(Response response) {
 883                                         sessionExpired();
 884                                 }
 885                 };
 886                 delete.setHeader("X-Auth-Token", getToken());
 887                 Scheduler.get().scheduleDeferred(delete);
 888             }
 889             else if (o != null) {
 890                 String subdir = o.get("subdir").isString().stringValue();
 891                 subdir = subdir.substring(0, subdir.length() - 1);
 892                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(subdir) + "&t=" + System.currentTimeMillis();
 893                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 894                 builder.setHeader("X-Auth-Token", getToken());
 895                 try {
 896                     builder.sendRequest("", new RequestCallback() {
 897                         @Override
 898                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 899                             if (response.getStatusCode() == Response.SC_OK) {
 900                                 JSONValue json = JSONParser.parseStrict(response.getText());
 901                                 JSONArray array2 = json.isArray();
 902                                 if (array2 != null) {
 903                                     int l = array.size();
 904                                     for (int j=0; j<array2.size(); j++) {
 905                                         array.set(l++, array2.get(j));
 906                                     }
 907                                 }
 908                                 deleteObject(folder, i + 1, array);
 909                             }
 910                         }
 911
 912                         @Override
 913                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 914                             displayError("System error unable to delete folder: " + exception.getMessage());
 915                         }
 916                     });
 917                 }
 918                 catch (RequestException e) {
 919                 }
 920             }
 921         }
 922         else {
 923             String path = folder.getUri();
 924             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 925                 @Override
 926                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 927                     updateFolder(folder.getParent(), true, new Command() {
 928
 929                                                 @Override
 930                                                 public void execute() {
 931                                                         updateStatistics();
 932                                                 }
 933                                         });
 934                 }
 935
 936                 @Override
 937                 public void onError(Throwable t) {
 938                     GWT.log("", t);
 939                     if (t instanceof RestException) {
 940                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 941                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 942                         else
 943                                 onSuccess(null);
 944                     }
 945                     else
 946                         displayError("System error unable to delete folder: " + t.getMessage());
 947                 }
 948
 949                                 @Override
 950                                 protected void onUnauthorized(Response response) {
 951                                         sessionExpired();
 952                                 }
 953             };
 954             deleteFolder.setHeader("X-Auth-Token", getToken());
 955             Scheduler.get().scheduleDeferred(deleteFolder);
 956         }
 957     }
 958
 959     public FolderTreeView getFolderTreeView() {
 960         return folderTreeView;
 961     }
 962
 963     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 964         if (iter.hasNext()) {
 965             File file = iter.next();
 966             String path = targetUri + "/" + file.getName();
 967             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 968                 @Override
 969                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 970                     copyFiles(iter, targetUsername, targetUri, callback);
 971                 }
 972
 973                 @Override
 974                 public void onError(Throwable t) {
 975                     GWT.log("", t);
 976                     if (t instanceof RestException) {
 977                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 978                     }
 979                     else
 980                         displayError("System error unable to copy file: "+t.getMessage());
 981                 }
 982
 983                                 @Override
 984                                 protected void onUnauthorized(Response response) {
 985                                         sessionExpired();
 986                                 }
 987             };
 988             copyFile.setHeader("X-Auth-Token", getToken());
 989             copyFile.setHeader("X-Copy-From", file.getUri());
 990             if (!file.getOwner().equals(targetUsername))
 991                 copyFile.setHeader("X-Source-Account", file.getOwner());
 992             Scheduler.get().scheduleDeferred(copyFile);
 993         }
 994         else  if (callback != null) {
 995             callback.execute();
 996         }
 997     }
 998
 999     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
1000         if (iter.hasNext()) {
1001             final Folder f = iter.next();
1002             copyFolder(f, targetUsername, targetUri, new Command() {
1003
1004                                 @Override
1005                                 public void execute() {
1006                                         copySubfolders(iter, targetUsername, targetUri, callback);
1007                                 }
1008                         });
1009         }
1010         else  if (callback != null) {
1011             callback.execute();
1012         }
1013     }
1014
1015     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
1016         String path = targetUri + "/" + f.getName();
1017         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
1018             @Override
1019             public void onSuccess(@SuppressWarnings("unused") Resource result) {
1020                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix()), f) {
1021
1022                                         @Override
1023                                         public void onSuccess(final Folder _f) {
1024                                 Iterator<File> iter = _f.getFiles().iterator();
1025                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
1026                                     @Override
1027                                     public void execute() {
1028                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
1029                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
1030                                     }
1031                                 });
1032                                         }
1033
1034                                         @Override
1035                                         public void onError(Throwable t) {
1036                                 GWT.log("", t);
1037                                 if (t instanceof RestException) {
1038                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
1039                                 }
1040                                 else
1041                                     displayError("System error getting folder: " + t.getMessage());
1042                                         }
1043
1044                                         @Override
1045                                         protected void onUnauthorized(Response response) {
1046                                                 sessionExpired();
1047                                         }
1048                                 };
1049                                 getFolder.setHeader("X-Auth-Token", getToken());
1050                                 Scheduler.get().scheduleDeferred(getFolder);
1051             }
1052
1053             @Override
1054             public void onError(Throwable t) {
1055                 GWT.log("", t);
1056                 if (t instanceof RestException) {
1057                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
1058                 }
1059                 else
1060                     displayError("System error creating folder: " + t.getMessage());
1061             }
1062
1063                         @Override
1064                         protected void onUnauthorized(Response response) {
1065                                 sessionExpired();
1066                         }
1067         };
1068         createFolder.setHeader("X-Auth-Token", getToken());
1069         createFolder.setHeader("Accept", "*/*");
1070         createFolder.setHeader("Content-Length", "0");
1071         createFolder.setHeader("Content-Type", "application/folder");
1072         Scheduler.get().scheduleDeferred(createFolder);
1073     }
1074
1075     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1076         selectionModels.add(model);
1077     }
1078
1079         public OtherSharedTreeView getOtherSharedTreeView() {
1080                 return otherSharedTreeView;
1081         }
1082
1083         public void updateTrash(boolean showFiles, Command callback) {
1084                 updateFolder(trash, showFiles, callback);
1085         }
1086
1087         public void updateGroupsNode() {
1088                 groupTreeView.updateGroupNode(null);
1089         }
1090
1091         public void addGroup(String groupname) {
1092                 Group newGroup = new Group(groupname);
1093                 account.addGroup(newGroup);
1094                 groupTreeView.updateGroupNode(null);
1095         }
1096
1097         public void removeGroup(Group group) {
1098                 account.removeGroup(group);
1099                 updateGroupsNode();
1100         }
1101
1102         public TreeView getSelectedTree() {
1103                 return selectedTree;
1104         }
1105
1106         public Folder getSelection() {
1107                 return selectedTree.getSelection();
1108         }
1109
1110         public void showFolderStatistics(int folderFileCount) {
1111                 numOfFiles.setHTML(String.valueOf(folderFileCount));
1112         }
1113
1114         public GroupTreeView getGroupTreeView() {
1115                 return groupTreeView;
1116         }
1117
1118         public void sessionExpired() {
1119                 new SessionExpiredDialog(this).center();
1120         }
1121
1122         public void updateRootFolder(Command callback) {
1123                 updateFolder(account.getPithos(), false, callback);
1124         }
1125
1126         void createMySharedTree() {
1127                 mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1128                 mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1129                     @Override
1130                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1131                         if (mysharedTreeSelectionModel.getSelectedObject() != null) {
1132                             deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1133                             upload.setEnabled(false);
1134                             updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1135                         }
1136                     }
1137                 });
1138                 selectionModels.add(mysharedTreeSelectionModel);
1139                 mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1140                 mysharedTreeViewModel.initialize(new Command() {
1141
1142                         @Override
1143                         public void execute() {
1144                             mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1145                                 trees.insert(mysharedTreeView, 2);
1146                                 treeViews.add(mysharedTreeView);
1147                                 createOtherSharedTree();
1148                         }
1149                 });
1150         }
1151
1152         void createOtherSharedTree() {
1153                 otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1154                 otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1155                     @Override
1156                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1157                         if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
1158                             deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1159                             otherSharedTreeView.addStyleName("cellTreeWidget-selectedTree");
1160                             applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1161                             updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
1162                         }
1163                     }
1164                 });
1165                 selectionModels.add(otherSharedTreeSelectionModel);
1166                 otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1167                 otherSharedTreeViewModel.initialize(new Command() {
1168
1169                         @Override
1170                         public void execute() {
1171                             otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1172                                 trees.insert(otherSharedTreeView, 3);
1173                                 treeViews.add(otherSharedTreeView);
1174                         }
1175                 });
1176         }
1177
1178         public void logoff() {
1179         Configuration conf = (Configuration) GWT.create(Configuration.class);
1180                 Cookies.removeCookie(conf.authCookie());
1181                 Cookies.removeCookie(conf.authTokenCookie(), "/");
1182                 for (String s: Cookies.getCookieNames())
1183                         if (s.startsWith(conf.shibSessionCookiePrefix()))
1184                                 Cookies.removeCookie(s, "/");
1185                 Window.Location.assign(Window.Location.getPath());
1186         }
1187 }