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

   1 /*
   2  * Copyright 2011 GRNET S.A. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or
   5  * without modification, are permitted provided that the following
   6  * conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above
   9  *      copyright notice, this list of conditions and the following
  10  *      disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials
  15  *      provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and
  31  * documentation are those of the authors and should not be
  32  * interpreted as representing official policies, either expressed
  33  * or implied, of GRNET S.A.
  34  */
  35 package gr.grnet.pithos.web.client;
  36
  37 import gr.grnet.pithos.web.client.commands.UploadFileCommand;
  38 import gr.grnet.pithos.web.client.foldertree.AccountResource;
  39 import gr.grnet.pithos.web.client.foldertree.File;
  40 import gr.grnet.pithos.web.client.foldertree.Folder;
  41 import gr.grnet.pithos.web.client.foldertree.FolderTreeView;
  42 import gr.grnet.pithos.web.client.foldertree.FolderTreeViewModel;
  43 import gr.grnet.pithos.web.client.foldertree.Resource;
  44 import gr.grnet.pithos.web.client.grouptree.Group;
  45 import gr.grnet.pithos.web.client.grouptree.GroupTreeView;
  46 import gr.grnet.pithos.web.client.grouptree.GroupTreeViewModel;
  47 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView;
  48 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeViewModel;
  49 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView;
  50 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeViewModel;
  51 import gr.grnet.pithos.web.client.rest.DeleteRequest;
  52 import gr.grnet.pithos.web.client.rest.GetRequest;
  53 import gr.grnet.pithos.web.client.rest.HeadRequest;
  54 import gr.grnet.pithos.web.client.rest.PutRequest;
  55 import gr.grnet.pithos.web.client.rest.RestException;
  56 import gr.grnet.pithos.web.client.tagtree.Tag;
  57 import gr.grnet.pithos.web.client.tagtree.TagTreeView;
  58 import gr.grnet.pithos.web.client.tagtree.TagTreeViewModel;
  59
  60 import java.util.ArrayList;
  61 import java.util.HashMap;
  62 import java.util.Iterator;
  63 import java.util.List;
  64 import java.util.Set;
  65
  66 import com.google.gwt.core.client.EntryPoint;
  67 import com.google.gwt.core.client.GWT;
  68 import com.google.gwt.core.client.Scheduler;
  69 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  70 import com.google.gwt.event.dom.client.ClickEvent;
  71 import com.google.gwt.event.dom.client.ClickHandler;
  72 import com.google.gwt.event.logical.shared.ResizeEvent;
  73 import com.google.gwt.event.logical.shared.ResizeHandler;
  74 import com.google.gwt.http.client.Request;
  75 import com.google.gwt.http.client.RequestBuilder;
  76 import com.google.gwt.http.client.RequestCallback;
  77 import com.google.gwt.http.client.RequestException;
  78 import com.google.gwt.http.client.Response;
  79 import com.google.gwt.http.client.URL;
  80 import com.google.gwt.i18n.client.NumberFormat;
  81 import com.google.gwt.json.client.JSONArray;
  82 import com.google.gwt.json.client.JSONObject;
  83 import com.google.gwt.json.client.JSONParser;
  84 import com.google.gwt.json.client.JSONString;
  85 import com.google.gwt.json.client.JSONValue;
  86 import com.google.gwt.resources.client.ImageResource;
  87 import com.google.gwt.user.client.Command;
  88 import com.google.gwt.user.client.Cookies;
  89 import com.google.gwt.user.client.Event;
  90 import com.google.gwt.user.client.History;
  91 import com.google.gwt.user.client.Window;
  92 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  93 import com.google.gwt.user.client.ui.Button;
  94 import com.google.gwt.user.client.ui.HTML;
  95 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  96 import com.google.gwt.user.client.ui.HasVerticalAlignment;
  97 import com.google.gwt.user.client.ui.HorizontalPanel;
  98 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
  99 import com.google.gwt.user.client.ui.RootPanel;
 100 import com.google.gwt.user.client.ui.VerticalPanel;
 101 import com.google.gwt.view.client.SelectionChangeEvent;
 102 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
 103 import com.google.gwt.view.client.SingleSelectionModel;
 104
 105 /**
 106  * Entry point classes define <code>onModuleLoad()</code>.
 107  */
 108 public class Pithos implements EntryPoint, ResizeHandler {
 109
 110         public static final String HOME_CONTAINER = "pithos";
 111
 112         public static final String TRASH_CONTAINER = "trash";
 113
 114         /**
 115          * Instantiate an application-level image bundle. This object will provide
 116          * programmatic access to all the images needed by widgets.
 117          */
 118         static Images images = (Images) GWT.create(Images.class);
 119
 120     public String getUsername() {
 121         return username;
 122     }
 123
 124     public void setAccount(AccountResource acct) {
 125         account = acct;
 126     }
 127
 128     public AccountResource getAccount() {
 129         return account;
 130     }
 131
 132     public void updateFolder(Folder f, boolean showfiles, Command callback) {
 133         folderTreeView.updateFolder(f, showfiles, callback);
 134     }
 135
 136     public void updateGroupNode(Group group) {
 137         groupTreeView.updateGroupNode(group);
 138     }
 139
 140     public void updateSharedFolder(Folder f, boolean showfiles) {
 141         mysharedTreeView.updateFolder(f, showfiles);
 142     }
 143
 144     public void updateOtherSharedFolder(Folder f, boolean showfiles) {
 145         otherSharedTreeView.updateFolder(f, showfiles);
 146     }
 147
 148     public List<Tag> getAllTags() {
 149         List<Tag> tagList = new ArrayList<Tag>();
 150         for (Folder f : account.getContainers()) {
 151             for (String t : f.getTags()) {
 152                 tagList.add(new Tag(t));
 153             }
 154         }
 155         return tagList;
 156     }
 157
 158     public MysharedTreeView getMySharedTreeView() {
 159         return mysharedTreeView;
 160     }
 161
 162     /**
 163          * An aggregate image bundle that pulls together all the images for this
 164          * application into a single bundle.
 165          */
 166         public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 167
 168                 @Source("gr/grnet/pithos/resources/document.png")
 169                 ImageResource folders();
 170
 171                 @Source("gr/grnet/pithos/resources/advancedsettings.png")
 172                 ImageResource tools();
 173         }
 174
 175         /**
 176          * The Application Clipboard implementation;
 177          */
 178         private Clipboard clipboard = new Clipboard();
 179
 180         /**
 181          * The top panel that contains the menu bar.
 182          */
 183         private TopPanel topPanel;
 184
 185         /**
 186          * The panel that contains the various system messages.
 187          */
 188         private MessagePanel messagePanel = new MessagePanel(Pithos.images);
 189
 190         /**
 191          * The bottom panel that contains the status bar.
 192          */
 193         private StatusPanel statusPanel = null;
 194
 195         /**
 196          * The file list widget.
 197          */
 198         private FileList fileList;
 199
 200         /**
 201          * The tab panel that occupies the right side of the screen.
 202          */
 203         private VerticalPanel inner = new VerticalPanel();
 204
 205
 206         /**
 207          * The split panel that will contain the left and right panels.
 208          */
 209         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 210
 211         /**
 212          * The currently selected item in the application, for use by the Edit menu
 213          * commands. Potential types are Folder, File, User and Group.
 214          */
 215         private Object currentSelection;
 216
 217         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 218
 219     private String username = null;
 220
 221     /**
 222      * The authentication token of the current user.
 223      */
 224     private String token;
 225
 226     VerticalPanel trees;
 227
 228     SingleSelectionModel<Folder> folderTreeSelectionModel;
 229     FolderTreeViewModel folderTreeViewModel;
 230     FolderTreeView folderTreeView;
 231
 232     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 233     MysharedTreeViewModel mysharedTreeViewModel;
 234     MysharedTreeView mysharedTreeView = null;;
 235
 236     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 237     OtherSharedTreeViewModel otherSharedTreeViewModel;
 238     OtherSharedTreeView otherSharedTreeView = null;
 239
 240     GroupTreeViewModel groupTreeViewModel;
 241     private GroupTreeView groupTreeView;
 242
 243     private TreeView selectedTree;
 244     protected AccountResource account;
 245
 246     Folder trash;
 247
 248     @SuppressWarnings("rawtypes") List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 249
 250     Button upload;
 251
 252     private HTML totalFiles;
 253
 254     private HTML usedBytes;
 255
 256     private HTML totalBytes;
 257
 258     private HTML usedPercent;
 259
 260     private HTML numOfFiles;
 261
 262     private Button toolsButton;
 263
 264         @Override
 265         public void onModuleLoad() {
 266                 if (parseUserCredentials())
 267             initialize();
 268         }
 269
 270     private void initialize() {
 271         boolean bareContent = Window.Location.getParameter("noframe") != null;
 272         String contentWidth = bareContent ? "100%" : "75%";
 273
 274         VerticalPanel outer = new VerticalPanel();
 275         outer.setWidth("100%");
 276         if (!bareContent) {
 277                 outer.addStyleName("pithos-outer");
 278         }
 279
 280         if (!bareContent) {
 281                 topPanel = new TopPanel(this, Pithos.images);
 282                 topPanel.setWidth("100%");
 283                 outer.add(topPanel);
 284                 outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 285         }
 286
 287         messagePanel.setWidth(contentWidth);
 288         messagePanel.setVisible(false);
 289         outer.add(messagePanel);
 290         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 291
 292         HorizontalPanel header = new HorizontalPanel();
 293         header.addStyleName("pithos-header");
 294         header.setWidth(contentWidth);
 295         HorizontalPanel leftHeader = new HorizontalPanel();
 296         VerticalPanel uploadButtonPanel = new VerticalPanel();
 297         upload = new Button("Upload File", new ClickHandler() {
 298             @Override
 299             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 300                 new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 301             }
 302         });
 303         upload.addStyleName("pithos-uploadButton");
 304         uploadButtonPanel.add(upload);
 305         uploadButtonPanel.setWidth("100%");
 306         uploadButtonPanel.setHeight("60px");
 307         uploadButtonPanel.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 308         uploadButtonPanel.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 309         leftHeader.add(uploadButtonPanel);
 310         header.add(leftHeader);
 311         header.setCellWidth(leftHeader, "35%");
 312
 313         HorizontalPanel rightHeader = new HorizontalPanel();
 314         rightHeader.addStyleName("pithos-rightSide");
 315         rightHeader.setSpacing(5);
 316
 317         toolsButton = new Button(AbstractImagePrototype.create(images.tools()).getHTML());
 318         toolsButton.addClickHandler(new ClickHandler() {
 319
 320                         @Override
 321                         public void onClick(ClickEvent event) {
 322                 ToolsMenu menu = new ToolsMenu(Pithos.this, images, getSelectedTree(), getSelectedTree().getSelection(), getFileList().getSelectedFiles());
 323                 if (!menu.isEmpty()) {
 324                             menu.setPopupPosition(event.getClientX(), event.getClientY());
 325                             menu.show();
 326                 }
 327                         }
 328                 });
 329         rightHeader.add(toolsButton);
 330         rightHeader.setCellHorizontalAlignment(toolsButton, HasHorizontalAlignment.ALIGN_LEFT);
 331
 332         HorizontalPanel folderStatistics = new HorizontalPanel();
 333         folderStatistics.addStyleName("pithos-folderStatistics");
 334         numOfFiles = new HTML();
 335         folderStatistics.add(numOfFiles);
 336         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 337         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 338         folderStatistics.add(numOfFilesLabel);
 339         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 340         rightHeader.add(folderStatistics);
 341         rightHeader.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 342         header.add(rightHeader);
 343         header.setCellVerticalAlignment(rightHeader, HasVerticalAlignment.ALIGN_MIDDLE);
 344         header.setCellHeight(rightHeader, "60px");
 345         outer.add(header);
 346         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 347         // Inner contains the various lists.nner
 348         inner.sinkEvents(Event.ONCONTEXTMENU);
 349         inner.setWidth("100%");
 350
 351         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 352         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 353             @Override
 354             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 355                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 356                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 357                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 358                     folderTreeView.addStyleName("cellTreeWidget-selectedTree");
 359                     Folder f = folderTreeSelectionModel.getSelectedObject();
 360                     showFiles(f);
 361                 }
 362                 else
 363                     folderTreeView.removeStyleName("cellTreeWidget-selectedTree");
 364             }
 365         });
 366         selectionModels.add(folderTreeSelectionModel);
 367
 368         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 369         folderTreeView = new FolderTreeView(folderTreeViewModel);
 370
 371         fileList = new FileList(this, images, folderTreeView);
 372         inner.add(fileList);
 373
 374         groupTreeViewModel = new GroupTreeViewModel(this);
 375         groupTreeView = new GroupTreeView(groupTreeViewModel);
 376
 377         trees = new VerticalPanel();
 378         trees.setWidth("100%");
 379
 380
 381         HorizontalPanel treeHeader = new HorizontalPanel();
 382         treeHeader.addStyleName("pithos-treeHeader");
 383         treeHeader.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);
 384         treeHeader.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
 385         HorizontalPanel statistics = new HorizontalPanel();
 386         statistics.addStyleName("pithos-statistics");
 387         statistics.add(new HTML("Total Objects:&nbsp;"));
 388         totalFiles = new HTML();
 389         statistics.add(totalFiles);
 390         statistics.add(new HTML("&nbsp;|&nbsp;Used:&nbsp;"));
 391         usedBytes = new HTML();
 392         statistics.add(usedBytes);
 393         statistics.add(new HTML("&nbsp;of&nbsp;"));
 394         totalBytes = new HTML();
 395         statistics.add(totalBytes);
 396         statistics.add(new HTML("&nbsp;("));
 397         usedPercent = new HTML();
 398         statistics.add(usedPercent);
 399         statistics.add(new HTML(")"));
 400         treeHeader.add(statistics);
 401         treeHeader.setCellHorizontalAlignment(statistics, HasHorizontalAlignment.ALIGN_LEFT);
 402         trees.add(treeHeader);
 403
 404         trees.add(folderTreeView);
 405         trees.add(groupTreeView);
 406         // Add the left and right panels to the split panel.
 407         splitPanel.setLeftWidget(trees);
 408         splitPanel.setRightWidget(inner);
 409         splitPanel.setSplitPosition("35%");
 410         splitPanel.setSize("100%", "100%");
 411         splitPanel.addStyleName("pithos-splitPanel");
 412         splitPanel.setWidth(contentWidth);
 413         outer.add(splitPanel);
 414         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 415
 416         if (!bareContent) {
 417                 statusPanel = new StatusPanel();
 418                 statusPanel.setWidth("100%");
 419                 outer.add(statusPanel);
 420                 outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 421         }
 422
 423         // Hook the window resize event, so that we can adjust the UI.
 424         Window.addResizeHandler(this);
 425         // Clear out the window's built-in margin, because we want to take
 426         // advantage of the entire client area.
 427         Window.setMargin("0px");
 428         // Finally, add the outer panel to the RootPanel, so that it will be
 429         // displayed.
 430         RootPanel.get().add(outer);
 431         // Call the window resized handler to get the initial sizes setup. Doing
 432         // this in a deferred command causes it to occur after all widgets'
 433         // sizes have been computed by the browser.
 434         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 435
 436             @Override
 437             public void execute() {
 438                 onWindowResized(Window.getClientHeight());
 439             }
 440         });
 441
 442         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 443             @Override
 444             public void execute() {
 445                 fetchAccount(new Command() {
 446
 447                                         @Override
 448                                         public void execute() {
 449                                 if (!account.hasHomeContainer())
 450                                     createHomeContainer(account, this);
 451                                 else if (!account.hasTrashContainer())
 452                                         createTrashContainer(this);
 453                                 else {
 454                                         for (Folder f : account.getContainers())
 455                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 456                                                         trash = f;
 457                                                         break;
 458                                                 }
 459                                     folderTreeViewModel.initialize(account, new Command() {
 460
 461                                                                 @Override
 462                                                                 public void execute() {
 463                                                     createMySharedTree();
 464                                                                 }
 465                                                         });
 466                                     groupTreeViewModel.initialize();
 467                                     showStatistics();
 468                                 }
 469                                         }
 470                                 });
 471             }
 472         });
 473     }
 474
 475     public void applyPermissions(Folder f) {
 476         if (f != null) {
 477                 if (f.isInTrash())
 478                         upload.setEnabled(false);
 479                 else {
 480                         Boolean[] perms = f.getPermissions().get(username);
 481                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 482                                 upload.setEnabled(true);
 483                         }
 484                         else
 485                                 upload.setEnabled(false);
 486                 }
 487         }
 488         else
 489                 upload.setEnabled(false);
 490         }
 491
 492         @SuppressWarnings({ "rawtypes", "unchecked" })
 493         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 494         selectedTree = _selectedTree;
 495         for (SingleSelectionModel s : selectionModels)
 496             if (!s.equals(model))
 497                 s.setSelected(s.getSelectedObject(), false);
 498     }
 499
 500     public void showFiles(Folder f) {
 501         Set<File> files = f.getFiles();
 502         showFiles(files);
 503     }
 504
 505     public void showFiles(Set<File> files) {
 506         //Iterator<File> iter = files.iterator();
 507         //fetchFile(iter, files);
 508         fileList.setFiles(new ArrayList<File>(files));
 509     }
 510
 511     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 512         if (iter.hasNext()) {
 513             File file = iter.next();
 514             String path = file.getUri() + "?format=json";
 515             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 516                 @Override
 517                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 518                     fetchFile(iter, files);
 519                 }
 520
 521                 @Override
 522                 public void onError(Throwable t) {
 523                     GWT.log("Error getting file", t);
 524                     if (t instanceof RestException)
 525                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 526                     else
 527                         displayError("System error fetching file: " + t.getMessage());
 528                 }
 529
 530                                 @Override
 531                                 protected void onUnauthorized(Response response) {
 532                                         sessionExpired();
 533                                 }
 534             };
 535             getFile.setHeader("X-Auth-Token", "0000");
 536             Scheduler.get().scheduleDeferred(getFile);
 537         }
 538         else
 539             fileList.setFiles(new ArrayList<File>(files));
 540     }
 541
 542     /**
 543          * Parse and store the user credentials to the appropriate fields.
 544          */
 545         private boolean parseUserCredentials() {
 546         username = Window.Location.getParameter("user");
 547         token = Window.Location.getParameter("token");
 548         Configuration conf = (Configuration) GWT.create(Configuration.class);
 549         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 550             String cookie = conf.authCookie();
 551             String auth = Cookies.getCookie(cookie);
 552             if (auth == null) {
 553                 authenticateUser();
 554                 return false;
 555             }
 556                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 557                         if (authSplit.length != 2) {
 558                             authenticateUser();
 559                             return false;
 560                         }
 561                         username = authSplit[0];
 562                         token = authSplit[1];
 563                         return true;
 564         }
 565                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
 566                 return true;
 567     }
 568
 569     /**
 570          * Redirect the user to the login page for authentication.
 571          */
 572         protected void authenticateUser() {
 573                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 574         Window.Location.assign(conf.loginUrl() + "?next=" + Window.Location.getHref());
 575         }
 576
 577         protected void fetchAccount(final Command callback) {
 578         String path = "?format=json";
 579
 580         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 581             @Override
 582             public void onSuccess(AccountResource _result) {
 583                 account = _result;
 584                 if (callback != null)
 585                         callback.execute();
 586             }
 587
 588             @Override
 589             public void onError(Throwable t) {
 590                 GWT.log("Error getting account", t);
 591                 if (t instanceof RestException)
 592                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 593                 else
 594                     displayError("System error fetching user data: " + t.getMessage());
 595             }
 596
 597                         @Override
 598                         protected void onUnauthorized(Response response) {
 599                                 sessionExpired();
 600                         }
 601         };
 602         getAccount.setHeader("X-Auth-Token", token);
 603         Scheduler.get().scheduleDeferred(getAccount);
 604     }
 605
 606     public void updateStatistics() {
 607         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 608
 609                         @Override
 610                         public void onSuccess(@SuppressWarnings("unused") AccountResource _result) {
 611                                 showStatistics();
 612                         }
 613
 614                         @Override
 615                         public void onError(Throwable t) {
 616                 GWT.log("Error getting account", t);
 617                 if (t instanceof RestException)
 618                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 619                 else
 620                     displayError("System error fetching user data: " + t.getMessage());
 621                         }
 622
 623                         @Override
 624                         protected void onUnauthorized(Response response) {
 625                                 sessionExpired();
 626                         }
 627                 };
 628                 headAccount.setHeader("X-Auth-Token", token);
 629                 Scheduler.get().scheduleDeferred(headAccount);
 630         }
 631
 632         protected void showStatistics() {
 633         totalFiles.setHTML(String.valueOf(account.getNumberOfObjects()));
 634         usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
 635         totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
 636         NumberFormat nf = NumberFormat.getPercentFormat();
 637         usedPercent.setHTML(nf.format(account.getUsedPercentage()));
 638         }
 639
 640         protected void createHomeContainer(final AccountResource _account, final Command callback) {
 641         String path = "/" + Pithos.HOME_CONTAINER;
 642         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 643             @Override
 644             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 645                 if (!_account.hasTrashContainer())
 646                         createTrashContainer(callback);
 647                 else
 648                         fetchAccount(callback);
 649             }
 650
 651             @Override
 652             public void onError(Throwable t) {
 653                 GWT.log("Error creating pithos", t);
 654                 if (t instanceof RestException)
 655                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 656                 else
 657                     displayError("System error Error creating pithos: " + t.getMessage());
 658             }
 659
 660                         @Override
 661                         protected void onUnauthorized(Response response) {
 662                                 sessionExpired();
 663                         }
 664         };
 665         createPithos.setHeader("X-Auth-Token", getToken());
 666         Scheduler.get().scheduleDeferred(createPithos);
 667     }
 668
 669     protected void createTrashContainer(final Command callback) {
 670         String path = "/" + Pithos.TRASH_CONTAINER;
 671         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 672             @Override
 673             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 674                         fetchAccount(callback);
 675             }
 676
 677             @Override
 678             public void onError(Throwable t) {
 679                 GWT.log("Error creating pithos", t);
 680                 if (t instanceof RestException)
 681                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 682                 else
 683                     displayError("System error Error creating pithos: " + t.getMessage());
 684             }
 685
 686                         @Override
 687                         protected void onUnauthorized(Response response) {
 688                                 sessionExpired();
 689                         }
 690         };
 691         createPithos.setHeader("X-Auth-Token", getToken());
 692         Scheduler.get().scheduleDeferred(createPithos);
 693     }
 694
 695     /**
 696          * Creates an HTML fragment that places an image & caption together, for use
 697          * in a group header.
 698          *
 699          * @param imageProto an image prototype for an image
 700          * @param caption the group caption
 701          * @return the header HTML fragment
 702          */
 703         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 704                 String captionHTML = "<table class='caption' cellpadding='0' "
 705                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 706                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 707                 + caption + "</b></td></tr></table>";
 708                 return captionHTML;
 709         }
 710
 711         protected void onWindowResized(int height) {
 712                 // Adjust the split panel to take up the available room in the window.
 713                 int newHeight = height - splitPanel.getAbsoluteTop() - 60;
 714                 if (newHeight < 1)
 715                         newHeight = 1;
 716                 splitPanel.setHeight("" + newHeight);
 717                 inner.setHeight("" + newHeight);
 718         }
 719
 720         @Override
 721         public void onResize(ResizeEvent event) {
 722                 int height = event.getHeight();
 723                 onWindowResized(height);
 724         }
 725
 726         /**
 727          * Display an error message.
 728          *
 729          * @param msg the message to display
 730          */
 731         public void displayError(String msg) {
 732                 messagePanel.displayError(msg);
 733         }
 734
 735         /**
 736          * Display a warning message.
 737          *
 738          * @param msg the message to display
 739          */
 740         public void displayWarning(String msg) {
 741                 messagePanel.displayWarning(msg);
 742         }
 743
 744         /**
 745          * Display an informational message.
 746          *
 747          * @param msg the message to display
 748          */
 749         public void displayInformation(String msg) {
 750                 messagePanel.displayInformation(msg);
 751         }
 752
 753         /**
 754          * Retrieve the fileList.
 755          *
 756          * @return the fileList
 757          */
 758         public FileList getFileList() {
 759                 return fileList;
 760         }
 761
 762         /**
 763          * Retrieve the topPanel.
 764          *
 765          * @return the topPanel
 766          */
 767         TopPanel getTopPanel() {
 768                 return topPanel;
 769         }
 770
 771         /**
 772          * Retrieve the clipboard.
 773          *
 774          * @return the clipboard
 775          */
 776         public Clipboard getClipboard() {
 777                 return clipboard;
 778         }
 779
 780         public StatusPanel getStatusPanel() {
 781                 return statusPanel;
 782         }
 783
 784         public String getToken() {
 785                 return token;
 786         }
 787
 788         public static native void preventIESelection() /*-{
 789                 $doc.body.onselectstart = function () { return false; };
 790         }-*/;
 791
 792         public static native void enableIESelection() /*-{
 793                 if ($doc.body.onselectstart != null)
 794                 $doc.body.onselectstart = null;
 795         }-*/;
 796
 797         /**
 798          * @return the absolute path of the API root URL
 799          */
 800         public String getApiPath() {
 801                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 802                 return conf.apiPath();
 803         }
 804
 805         /**
 806          * History support for folder navigation
 807          * adds a new browser history entry
 808          *
 809          * @param key
 810          */
 811         public void updateHistory(String key){
 812 //              Replace any whitespace of the initial string to "+"
 813 //              String result = key.replaceAll("\\s","+");
 814 //              Add a new browser history entry.
 815 //              History.newItem(result);
 816                 History.newItem(key);
 817         }
 818
 819     public void deleteFolder(final Folder folder) {
 820         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(folder.getPrefix()) + "&t=" + System.currentTimeMillis();
 821         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 822         builder.setHeader("X-Auth-Token", getToken());
 823         try {
 824             builder.sendRequest("", new RequestCallback() {
 825                 @Override
 826                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 827                     if (response.getStatusCode() == Response.SC_OK) {
 828                         JSONValue json = JSONParser.parseStrict(response.getText());
 829                         JSONArray array = json.isArray();
 830                         int i = 0;
 831                         if (array != null) {
 832                             deleteObject(folder, i, array);
 833                         }
 834                     }
 835                 }
 836
 837                 @Override
 838                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 839                     displayError("System error unable to delete folder: " + exception.getMessage());
 840                 }
 841             });
 842         }
 843         catch (RequestException e) {
 844         }
 845     }
 846
 847     void deleteObject(final Folder folder, final int i, final JSONArray array) {
 848         if (i < array.size()) {
 849             JSONObject o = array.get(i).isObject();
 850             if (o != null && !o.containsKey("subdir")) {
 851                 JSONString name = o.get("name").isString();
 852                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 853                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
 854                     @Override
 855                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 856                         deleteObject(folder, i + 1, array);
 857                     }
 858
 859                     @Override
 860                     public void onError(Throwable t) {
 861                         GWT.log("", t);
 862                         displayError("System error unable to delete folder: " + t.getMessage());
 863                     }
 864
 865                                 @Override
 866                                 protected void onUnauthorized(Response response) {
 867                                         sessionExpired();
 868                                 }
 869                 };
 870                 delete.setHeader("X-Auth-Token", getToken());
 871                 Scheduler.get().scheduleDeferred(delete);
 872             }
 873             else if (o != null) {
 874                 String subdir = o.get("subdir").isString().stringValue();
 875                 subdir = subdir.substring(0, subdir.length() - 1);
 876                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(subdir) + "&t=" + System.currentTimeMillis();
 877                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 878                 builder.setHeader("X-Auth-Token", getToken());
 879                 try {
 880                     builder.sendRequest("", new RequestCallback() {
 881                         @Override
 882                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 883                             if (response.getStatusCode() == Response.SC_OK) {
 884                                 JSONValue json = JSONParser.parseStrict(response.getText());
 885                                 JSONArray array2 = json.isArray();
 886                                 if (array2 != null) {
 887                                     int l = array.size();
 888                                     for (int j=0; j<array2.size(); j++) {
 889                                         array.set(l++, array2.get(j));
 890                                     }
 891                                 }
 892                                 deleteObject(folder, i + 1, array);
 893                             }
 894                         }
 895
 896                         @Override
 897                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 898                             displayError("System error unable to delete folder: " + exception.getMessage());
 899                         }
 900                     });
 901                 }
 902                 catch (RequestException e) {
 903                 }
 904             }
 905         }
 906         else {
 907             String path = folder.getUri();
 908             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 909                 @Override
 910                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 911                     updateFolder(folder.getParent(), true, new Command() {
 912
 913                                                 @Override
 914                                                 public void execute() {
 915                                                         updateStatistics();
 916                                                 }
 917                                         });
 918                 }
 919
 920                 @Override
 921                 public void onError(Throwable t) {
 922                     GWT.log("", t);
 923                     if (t instanceof RestException) {
 924                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 925                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 926                         else
 927                                 onSuccess(null);
 928                     }
 929                     else
 930                         displayError("System error unable to delete folder: " + t.getMessage());
 931                 }
 932
 933                                 @Override
 934                                 protected void onUnauthorized(Response response) {
 935                                         sessionExpired();
 936                                 }
 937             };
 938             deleteFolder.setHeader("X-Auth-Token", getToken());
 939             Scheduler.get().scheduleDeferred(deleteFolder);
 940         }
 941     }
 942
 943     public FolderTreeView getFolderTreeView() {
 944         return folderTreeView;
 945     }
 946
 947     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 948         if (iter.hasNext()) {
 949             File file = iter.next();
 950             String path = targetUri + "/" + file.getName();
 951             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 952                 @Override
 953                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 954                     copyFiles(iter, targetUsername, targetUri, callback);
 955                 }
 956
 957                 @Override
 958                 public void onError(Throwable t) {
 959                     GWT.log("", t);
 960                     if (t instanceof RestException) {
 961                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 962                     }
 963                     else
 964                         displayError("System error unable to copy file: "+t.getMessage());
 965                 }
 966
 967                                 @Override
 968                                 protected void onUnauthorized(Response response) {
 969                                         sessionExpired();
 970                                 }
 971             };
 972             copyFile.setHeader("X-Auth-Token", getToken());
 973             copyFile.setHeader("X-Copy-From", file.getUri());
 974             if (!file.getOwner().equals(targetUsername))
 975                 copyFile.setHeader("X-Source-Account", file.getOwner());
 976             Scheduler.get().scheduleDeferred(copyFile);
 977         }
 978         else  if (callback != null) {
 979             callback.execute();
 980         }
 981     }
 982
 983     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
 984         if (iter.hasNext()) {
 985             final Folder f = iter.next();
 986             copyFolder(f, targetUsername, targetUri, new Command() {
 987
 988                                 @Override
 989                                 public void execute() {
 990                                         copySubfolders(iter, targetUsername, targetUri, callback);
 991                                 }
 992                         });
 993         }
 994         else  if (callback != null) {
 995             callback.execute();
 996         }
 997     }
 998
 999     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
1000         String path = targetUri + "/" + f.getName();
1001         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
1002             @Override
1003             public void onSuccess(@SuppressWarnings("unused") Resource result) {
1004                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix()), f) {
1005
1006                                         @Override
1007                                         public void onSuccess(final Folder _f) {
1008                                 Iterator<File> iter = _f.getFiles().iterator();
1009                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
1010                                     @Override
1011                                     public void execute() {
1012                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
1013                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
1014                                     }
1015                                 });
1016                                         }
1017
1018                                         @Override
1019                                         public void onError(Throwable t) {
1020                                 GWT.log("", t);
1021                                 if (t instanceof RestException) {
1022                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
1023                                 }
1024                                 else
1025                                     displayError("System error getting folder: " + t.getMessage());
1026                                         }
1027
1028                                         @Override
1029                                         protected void onUnauthorized(Response response) {
1030                                                 sessionExpired();
1031                                         }
1032                                 };
1033                                 getFolder.setHeader("X-Auth-Token", getToken());
1034                                 Scheduler.get().scheduleDeferred(getFolder);
1035             }
1036
1037             @Override
1038             public void onError(Throwable t) {
1039                 GWT.log("", t);
1040                 if (t instanceof RestException) {
1041                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
1042                 }
1043                 else
1044                     displayError("System error creating folder: " + t.getMessage());
1045             }
1046
1047                         @Override
1048                         protected void onUnauthorized(Response response) {
1049                                 sessionExpired();
1050                         }
1051         };
1052         createFolder.setHeader("X-Auth-Token", getToken());
1053         createFolder.setHeader("Accept", "*/*");
1054         createFolder.setHeader("Content-Length", "0");
1055         createFolder.setHeader("Content-Type", "application/folder");
1056         Scheduler.get().scheduleDeferred(createFolder);
1057     }
1058
1059     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1060         selectionModels.add(model);
1061     }
1062
1063         public OtherSharedTreeView getOtherSharedTreeView() {
1064                 return otherSharedTreeView;
1065         }
1066
1067         public void updateTrash(boolean showFiles, Command callback) {
1068                 updateFolder(trash, showFiles, callback);
1069         }
1070
1071         public void updateGroupsNode() {
1072                 groupTreeView.updateGroupNode(null);
1073         }
1074
1075         public void addGroup(String groupname) {
1076                 Group newGroup = new Group(groupname);
1077                 account.addGroup(newGroup);
1078                 groupTreeView.updateGroupNode(null);
1079         }
1080
1081         public void removeGroup(Group group) {
1082                 account.removeGroup(group);
1083                 updateGroupsNode();
1084         }
1085
1086         public TreeView getSelectedTree() {
1087                 return selectedTree;
1088         }
1089
1090         public Folder getSelection() {
1091                 return selectedTree.getSelection();
1092         }
1093
1094         public void showFolderStatistics(int folderFileCount) {
1095                 numOfFiles.setHTML(String.valueOf(folderFileCount));
1096         }
1097
1098         public GroupTreeView getGroupTreeView() {
1099                 return groupTreeView;
1100         }
1101
1102         public void sessionExpired() {
1103                 new SessionExpiredDialog(this).center();
1104         }
1105
1106         public void updateRootFolder(Command callback) {
1107                 updateFolder(account.getPithos(), false, callback);
1108         }
1109
1110         void createMySharedTree() {
1111                 mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1112                 mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1113                     @Override
1114                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1115                         if (mysharedTreeSelectionModel.getSelectedObject() != null) {
1116                             deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1117                             upload.setEnabled(false);
1118                             updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1119                             mysharedTreeView.addStyleName("cellTreeWidget-selectedTree");
1120                         }
1121                 else
1122                     mysharedTreeView.removeStyleName("cellTreeWidget-selectedTree");
1123                     }
1124                 });
1125                 selectionModels.add(mysharedTreeSelectionModel);
1126                 mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1127                 mysharedTreeViewModel.initialize(new Command() {
1128
1129                         @Override
1130                         public void execute() {
1131                             mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1132                                 trees.insert(mysharedTreeView, 3);
1133                                 createOtherSharedTree();
1134                         }
1135                 });
1136         }
1137
1138         void createOtherSharedTree() {
1139                 otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1140                 otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1141                     @Override
1142                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1143                         if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
1144                             deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1145                             applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1146                             updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
1147                             otherSharedTreeView.addStyleName("cellTreeWidget-selectedTree");
1148                         }
1149                 else
1150                     otherSharedTreeView.removeStyleName("cellTreeWidget-selectedTree");
1151                     }
1152                 });
1153                 selectionModels.add(otherSharedTreeSelectionModel);
1154                 otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1155                 otherSharedTreeViewModel.initialize(new Command() {
1156
1157                         @Override
1158                         public void execute() {
1159                             otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1160                                 trees.insert(otherSharedTreeView, 4);
1161                         }
1162                 });
1163         }
1164
1165         public void logoff() {
1166         Configuration conf = (Configuration) GWT.create(Configuration.class);
1167                 Cookies.removeCookie(conf.authCookie());
1168                 Cookies.removeCookie(conf.authTokenCookie(), "/");
1169                 for (String s: Cookies.getCookieNames())
1170                         if (s.startsWith(conf.shibSessionCookiePrefix()))
1171                                 Cookies.removeCookie(s, "/");
1172                 Window.Location.assign(Window.Location.getPath());
1173         }
1174 }