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.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.json.client.JSONArray;
  80 import com.google.gwt.json.client.JSONObject;
  81 import com.google.gwt.json.client.JSONParser;
  82 import com.google.gwt.json.client.JSONString;
  83 import com.google.gwt.json.client.JSONValue;
  84 import com.google.gwt.resources.client.ImageResource;
  85 import com.google.gwt.user.client.Command;
  86 import com.google.gwt.user.client.Cookies;
  87 import com.google.gwt.user.client.Event;
  88 import com.google.gwt.user.client.History;
  89 import com.google.gwt.user.client.Window;
  90 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  91 import com.google.gwt.user.client.ui.Button;
  92 import com.google.gwt.user.client.ui.HTML;
  93 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  94 import com.google.gwt.user.client.ui.HasVerticalAlignment;
  95 import com.google.gwt.user.client.ui.HorizontalPanel;
  96 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
  97 import com.google.gwt.user.client.ui.RootPanel;
  98 import com.google.gwt.user.client.ui.VerticalPanel;
  99 import com.google.gwt.view.client.SelectionChangeEvent;
 100 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
 101 import com.google.gwt.view.client.SingleSelectionModel;
 102
 103 /**
 104  * Entry point classes define <code>onModuleLoad()</code>.
 105  */
 106 public class Pithos implements EntryPoint, ResizeHandler {
 107
 108         public static final String HOME_CONTAINER = "pithos";
 109
 110         public static final String TRASH_CONTAINER = "trash";
 111
 112         /**
 113          * Instantiate an application-level image bundle. This object will provide
 114          * programmatic access to all the images needed by widgets.
 115          */
 116         private static Images images = (Images) GWT.create(Images.class);
 117
 118     public String getUsername() {
 119         return username;
 120     }
 121
 122     public void setAccount(AccountResource acct) {
 123         account = acct;
 124     }
 125
 126     public AccountResource getAccount() {
 127         return account;
 128     }
 129
 130     public void updateFolder(Folder f, boolean showfiles, Command callback) {
 131         folderTreeView.updateFolder(f, showfiles, callback);
 132     }
 133
 134     public void updateGroupNode(Group group) {
 135         groupTreeView.updateGroupNode(group);
 136     }
 137
 138     public void updateSharedFolder(Folder f, boolean showfiles) {
 139         mysharedTreeView.updateFolder(f, showfiles);
 140     }
 141
 142     public void updateOtherSharedFolder(Folder f, boolean showfiles) {
 143         otherSharedTreeView.updateFolder(f, showfiles);
 144     }
 145
 146     public void updateTag(Tag t) {
 147         tagTreeView.updateTag(t);
 148     }
 149
 150     public void updateTags() {
 151         tagTreeViewModel.initialize(getAllTags());
 152     }
 153
 154     public List<Tag> getAllTags() {
 155         List<Tag> tagList = new ArrayList<Tag>();
 156         for (Folder f : account.getContainers()) {
 157             for (String t : f.getTags()) {
 158                 tagList.add(new Tag(t));
 159             }
 160         }
 161         return tagList;
 162     }
 163
 164     public MysharedTreeView getMySharedTreeView() {
 165         return mysharedTreeView;
 166     }
 167
 168     /**
 169          * An aggregate image bundle that pulls together all the images for this
 170          * application into a single bundle.
 171          */
 172         public interface Images extends TopPanel.Images, FileList.Images {
 173
 174                 @Source("gr/grnet/pithos/resources/document.png")
 175                 ImageResource folders();
 176
 177                 @Source("gr/grnet/pithos/resources/edit_group_22.png")
 178                 ImageResource groups();
 179
 180                 @Source("gr/grnet/pithos/resources/search.png")
 181                 ImageResource search();
 182         }
 183
 184         /**
 185          * The Application Clipboard implementation;
 186          */
 187         private Clipboard clipboard = new Clipboard();
 188
 189         /**
 190          * The top panel that contains the menu bar.
 191          */
 192         private TopPanel topPanel;
 193
 194         /**
 195          * The panel that contains the various system messages.
 196          */
 197         private MessagePanel messagePanel = new MessagePanel(Pithos.images);
 198
 199         /**
 200          * The bottom panel that contains the status bar.
 201          */
 202         private StatusPanel statusPanel = null;
 203
 204         /**
 205          * The file list widget.
 206          */
 207         private FileList fileList;
 208
 209         /**
 210          * The tab panel that occupies the right side of the screen.
 211          */
 212         private VerticalPanel inner = new VerticalPanel();
 213
 214
 215         /**
 216          * The split panel that will contain the left and right panels.
 217          */
 218         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 219
 220         /**
 221          * The currently selected item in the application, for use by the Edit menu
 222          * commands. Potential types are Folder, File, User and Group.
 223          */
 224         private Object currentSelection;
 225
 226
 227         /**
 228          * The WebDAV password of the current user
 229          */
 230         private String webDAVPassword;
 231
 232         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 233
 234     private String username = null;
 235
 236     /**
 237      * The authentication token of the current user.
 238      */
 239     private String token;
 240
 241     SingleSelectionModel<Folder> folderTreeSelectionModel;
 242     FolderTreeViewModel folderTreeViewModel;
 243     FolderTreeView folderTreeView;
 244
 245     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 246     private MysharedTreeViewModel mysharedTreeViewModel;
 247     MysharedTreeView mysharedTreeView;
 248
 249     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 250     private OtherSharedTreeViewModel otherSharedTreeViewModel;
 251     OtherSharedTreeView otherSharedTreeView;
 252
 253     protected SingleSelectionModel<Tag> tagTreeSelectionModel;
 254     private TagTreeViewModel tagTreeViewModel;
 255     private TagTreeView tagTreeView;
 256
 257     GroupTreeViewModel groupTreeViewModel;
 258     private GroupTreeView groupTreeView;
 259
 260     private TreeView selectedTree;
 261     protected AccountResource account;
 262
 263     Folder trash;
 264
 265     @SuppressWarnings("rawtypes")
 266         private List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 267
 268     Button upload;
 269
 270     private HTML totalFiles;
 271
 272     private HTML usedBytes;
 273
 274     private HTML totalBytes;
 275
 276     private HTML usedPercent;
 277
 278         @Override
 279         public void onModuleLoad() {
 280                 if (parseUserCredentials())
 281             initialize();
 282         }
 283
 284     private void initialize() {
 285         VerticalPanel outer = new VerticalPanel();
 286         outer.setWidth("100%");
 287
 288         topPanel = new TopPanel(this, Pithos.images);
 289         topPanel.setWidth("100%");
 290         outer.add(topPanel);
 291
 292         messagePanel.setWidth("100%");
 293         messagePanel.setVisible(false);
 294         outer.add(messagePanel);
 295         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 296
 297
 298         // Inner contains the various lists.
 299         inner.sinkEvents(Event.ONCONTEXTMENU);
 300         inner.setWidth("100%");
 301
 302         HorizontalPanel rightside = new HorizontalPanel();
 303         rightside.addStyleName("pithos-rightSide");
 304         rightside.setSpacing(5);
 305
 306         HTML folderStatistics = new HTML("5 Files (size: 1.1GB)");
 307         folderStatistics.addStyleName("pithos-folderStatistics");
 308         rightside.add(folderStatistics);
 309         inner.add(rightside);
 310         inner.setCellHorizontalAlignment(rightside, HasHorizontalAlignment.ALIGN_RIGHT);
 311         inner.setCellVerticalAlignment(rightside, HasVerticalAlignment.ALIGN_MIDDLE);
 312         inner.setCellHeight(rightside, "60px");
 313
 314         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 315         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 316             @Override
 317             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 318                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 319                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 320                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 321                     Folder f = folderTreeSelectionModel.getSelectedObject();
 322                     updateFolder(f, true, null);
 323                 }
 324             }
 325         });
 326         selectionModels.add(folderTreeSelectionModel);
 327
 328         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 329         folderTreeView = new FolderTreeView(folderTreeViewModel);
 330
 331         fileList = new FileList(this, images, folderTreeView);
 332         inner.add(fileList);
 333
 334         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 335         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 336             @Override
 337             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 338                 if (mysharedTreeSelectionModel.getSelectedObject() != null) {
 339                     deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
 340                     upload.setEnabled(false);
 341                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
 342                 }
 343             }
 344         });
 345         selectionModels.add(mysharedTreeSelectionModel);
 346         mysharedTreeViewModel = new MysharedTreeViewModel(this, mysharedTreeSelectionModel);
 347         mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
 348
 349         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 350         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 351             @Override
 352             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 353                 if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
 354                     deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
 355                     applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
 356                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
 357                 }
 358             }
 359         });
 360         selectionModels.add(otherSharedTreeSelectionModel);
 361         otherSharedTreeViewModel = new OtherSharedTreeViewModel(this, otherSharedTreeSelectionModel);
 362         otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
 363
 364         groupTreeViewModel = new GroupTreeViewModel(this);
 365         groupTreeView = new GroupTreeView(groupTreeViewModel);
 366
 367         VerticalPanel trees = new VerticalPanel();
 368
 369         upload = new Button("Upload File", new ClickHandler() {
 370             @Override
 371             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 372                 new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 373             }
 374         });
 375         upload.addStyleName("pithos-uploadButton");
 376         trees.add(upload);
 377
 378         HorizontalPanel treeHeader = new HorizontalPanel();
 379         treeHeader.addStyleName("pithos-treeHeader");
 380         HorizontalPanel statistics = new HorizontalPanel();
 381         statistics.add(new HTML("Total Objects:&nbsp;"));
 382         totalFiles = new HTML();
 383         statistics.add(totalFiles);
 384         statistics.add(new HTML("&nbsp;|&nbsp;Used:&nbsp;"));
 385         usedBytes = new HTML();
 386         statistics.add(usedBytes);
 387         statistics.add(new HTML("&nbsp;of&nbsp;"));
 388         totalBytes = new HTML();
 389         statistics.add(totalBytes);
 390         statistics.add(new HTML("&nbsp;("));
 391         usedPercent = new HTML();
 392         statistics.add(usedPercent);
 393         statistics.add(new HTML("%)"));
 394         treeHeader.add(statistics);
 395         trees.add(treeHeader);
 396
 397         trees.add(folderTreeView);
 398         trees.add(mysharedTreeView);
 399         trees.add(otherSharedTreeView);
 400 //        trees.add(tagTreeView);
 401         trees.add(groupTreeView);
 402         // Add the left and right panels to the split panel.
 403         splitPanel.setLeftWidget(trees);
 404         splitPanel.setRightWidget(inner);
 405         splitPanel.setSplitPosition("25%");
 406         splitPanel.setSize("100%", "100%");
 407         splitPanel.addStyleName("pithos-splitPanel");
 408         outer.add(splitPanel);
 409
 410         statusPanel = new StatusPanel();
 411         outer.add(statusPanel);
 412
 413
 414         // Hook the window resize event, so that we can adjust the UI.
 415         Window.addResizeHandler(this);
 416         // Clear out the window's built-in margin, because we want to take
 417         // advantage of the entire client area.
 418         Window.setMargin("0px");
 419         // Finally, add the outer panel to the RootPanel, so that it will be
 420         // displayed.
 421         RootPanel.get().add(outer);
 422         // Call the window resized handler to get the initial sizes setup. Doing
 423         // this in a deferred command causes it to occur after all widgets'
 424         // sizes have been computed by the browser.
 425         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 426
 427             @Override
 428             public void execute() {
 429                 onWindowResized(Window.getClientHeight());
 430             }
 431         });
 432
 433         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 434             @Override
 435             public void execute() {
 436                 fetchAccount(new Command() {
 437
 438                                         @Override
 439                                         public void execute() {
 440                                 if (!account.hasHomeContainer())
 441                                     createHomeContainer(account, this);
 442                                 else if (!account.hasTrashContainer())
 443                                         createTrashContainer(this);
 444                                 else {
 445                                         for (Folder f : account.getContainers())
 446                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 447                                                         trash = f;
 448                                                         break;
 449                                                 }
 450                                     folderTreeViewModel.initialize(account);
 451                                     groupTreeViewModel.initialize();
 452                                     showStatistics();
 453                                 }
 454                                         }
 455                                 });
 456             }
 457         });
 458     }
 459
 460     public void applyPermissions(Folder f) {
 461         if (f != null) {
 462                 if (f.isInTrash())
 463                         upload.setEnabled(false);
 464                 else {
 465                         Boolean[] perms = f.getPermissions().get(username);
 466                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 467                                 upload.setEnabled(true);
 468                         }
 469                         else
 470                                 upload.setEnabled(false);
 471                 }
 472         }
 473         else
 474                 upload.setEnabled(false);
 475         }
 476
 477         @SuppressWarnings({ "rawtypes", "unchecked" })
 478         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 479         selectedTree = _selectedTree;
 480         for (SingleSelectionModel s : selectionModels)
 481             if (!s.equals(model))
 482                 s.setSelected(s.getSelectedObject(), false);
 483     }
 484
 485     public void showFiles(Folder f) {
 486         Set<File> files = f.getFiles();
 487         showFiles(files);
 488     }
 489
 490     public void showFiles(Set<File> files) {
 491         //Iterator<File> iter = files.iterator();
 492         //fetchFile(iter, files);
 493         fileList.setFiles(new ArrayList<File>(files));
 494     }
 495
 496     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 497         if (iter.hasNext()) {
 498             File file = iter.next();
 499             String path = file.getUri() + "?format=json";
 500             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 501                 @Override
 502                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 503                     fetchFile(iter, files);
 504                 }
 505
 506                 @Override
 507                 public void onError(Throwable t) {
 508                     GWT.log("Error getting file", t);
 509                     if (t instanceof RestException)
 510                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 511                     else
 512                         displayError("System error fetching file: " + t.getMessage());
 513                 }
 514             };
 515             getFile.setHeader("X-Auth-Token", "0000");
 516             Scheduler.get().scheduleDeferred(getFile);
 517         }
 518         else
 519             fileList.setFiles(new ArrayList<File>(files));
 520     }
 521
 522     /**
 523          * Parse and store the user credentials to the appropriate fields.
 524          */
 525         private boolean parseUserCredentials() {
 526         username = Window.Location.getParameter("user");
 527         token = Window.Location.getParameter("token");
 528         Configuration conf = (Configuration) GWT.create(Configuration.class);
 529         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 530             String cookie = conf.authCookie();
 531             String auth = Cookies.getCookie(cookie);
 532             if (auth == null) {
 533                 authenticateUser();
 534                 return false;
 535             }
 536                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 537                         if (authSplit.length != 2) {
 538                             authenticateUser();
 539                             return false;
 540                         }
 541                         username = authSplit[0];
 542                         token = authSplit[1];
 543                         return true;
 544         }
 545                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
 546                 return true;
 547     }
 548
 549     /**
 550          * Redirect the user to the login page for authentication.
 551          */
 552         protected void authenticateUser() {
 553                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 554         Window.Location.assign(conf.loginUrl() + "?next=" + Window.Location.getHref());
 555         }
 556
 557         protected void fetchAccount(final Command callback) {
 558         String path = "?format=json";
 559
 560         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 561             @Override
 562             public void onSuccess(AccountResource _result) {
 563                 account = _result;
 564                 if (callback != null)
 565                         callback.execute();
 566             }
 567
 568             @Override
 569             public void onError(Throwable t) {
 570                 GWT.log("Error getting account", t);
 571                 if (t instanceof RestException)
 572                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 573                 else
 574                     displayError("System error fetching user data: " + t.getMessage());
 575             }
 576         };
 577         getAccount.setHeader("X-Auth-Token", token);
 578         Scheduler.get().scheduleDeferred(getAccount);
 579     }
 580
 581     public void updateStatistics() {
 582         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 583
 584                         @Override
 585                         public void onSuccess(@SuppressWarnings("unused") AccountResource _result) {
 586                                 showStatistics();
 587                         }
 588
 589                         @Override
 590                         public void onError(Throwable t) {
 591                 GWT.log("Error getting account", t);
 592                 if (t instanceof RestException)
 593                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 594                 else
 595                     displayError("System error fetching user data: " + t.getMessage());
 596                         }
 597                 };
 598                 headAccount.setHeader("X-Auth-Token", token);
 599                 Scheduler.get().scheduleDeferred(headAccount);
 600         }
 601
 602         protected void showStatistics() {
 603         totalFiles.setHTML(String.valueOf(account.getNumberOfObjects()));
 604         usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
 605         totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
 606         usedPercent.setHTML(String.valueOf(account.getUsedPercentage()));
 607         }
 608
 609         protected void createHomeContainer(final AccountResource _account, final Command callback) {
 610         String path = "/" + Pithos.HOME_CONTAINER;
 611         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 612             @Override
 613             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 614                 if (!_account.hasTrashContainer())
 615                         createTrashContainer(callback);
 616                 else
 617                         fetchAccount(callback);
 618             }
 619
 620             @Override
 621             public void onError(Throwable t) {
 622                 GWT.log("Error creating pithos", t);
 623                 if (t instanceof RestException)
 624                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 625                 else
 626                     displayError("System error Error creating pithos: " + t.getMessage());
 627             }
 628         };
 629         createPithos.setHeader("X-Auth-Token", getToken());
 630         Scheduler.get().scheduleDeferred(createPithos);
 631     }
 632
 633     protected void createTrashContainer(final Command callback) {
 634         String path = "/" + Pithos.TRASH_CONTAINER;
 635         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 636             @Override
 637             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 638                         fetchAccount(callback);
 639             }
 640
 641             @Override
 642             public void onError(Throwable t) {
 643                 GWT.log("Error creating pithos", t);
 644                 if (t instanceof RestException)
 645                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 646                 else
 647                     displayError("System error Error creating pithos: " + t.getMessage());
 648             }
 649         };
 650         createPithos.setHeader("X-Auth-Token", getToken());
 651         Scheduler.get().scheduleDeferred(createPithos);
 652     }
 653
 654     /**
 655          * Creates an HTML fragment that places an image & caption together, for use
 656          * in a group header.
 657          *
 658          * @param imageProto an image prototype for an image
 659          * @param caption the group caption
 660          * @return the header HTML fragment
 661          */
 662         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 663                 String captionHTML = "<table class='caption' cellpadding='0' "
 664                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 665                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 666                 + caption + "</b></td></tr></table>";
 667                 return captionHTML;
 668         }
 669
 670         protected void onWindowResized(int height) {
 671                 // Adjust the split panel to take up the available room in the window.
 672                 int newHeight = height - splitPanel.getAbsoluteTop() - 60;
 673                 if (newHeight < 1)
 674                         newHeight = 1;
 675                 splitPanel.setHeight("" + newHeight);
 676                 inner.setHeight("" + newHeight);
 677         }
 678
 679         @Override
 680         public void onResize(ResizeEvent event) {
 681                 int height = event.getHeight();
 682                 onWindowResized(height);
 683         }
 684
 685         /**
 686          * Display an error message.
 687          *
 688          * @param msg the message to display
 689          */
 690         public void displayError(String msg) {
 691                 messagePanel.displayError(msg);
 692         }
 693
 694         /**
 695          * Display a warning message.
 696          *
 697          * @param msg the message to display
 698          */
 699         public void displayWarning(String msg) {
 700                 messagePanel.displayWarning(msg);
 701         }
 702
 703         /**
 704          * Display an informational message.
 705          *
 706          * @param msg the message to display
 707          */
 708         public void displayInformation(String msg) {
 709                 messagePanel.displayInformation(msg);
 710         }
 711
 712         /**
 713          * Retrieve the fileList.
 714          *
 715          * @return the fileList
 716          */
 717         public FileList getFileList() {
 718                 return fileList;
 719         }
 720
 721         /**
 722          * Retrieve the topPanel.
 723          *
 724          * @return the topPanel
 725          */
 726         TopPanel getTopPanel() {
 727                 return topPanel;
 728         }
 729
 730         /**
 731          * Retrieve the clipboard.
 732          *
 733          * @return the clipboard
 734          */
 735         public Clipboard getClipboard() {
 736                 return clipboard;
 737         }
 738
 739         public StatusPanel getStatusPanel() {
 740                 return statusPanel;
 741         }
 742
 743         public String getToken() {
 744                 return token;
 745         }
 746
 747         public String getWebDAVPassword() {
 748                 return webDAVPassword;
 749         }
 750
 751         public static native void preventIESelection() /*-{
 752                 $doc.body.onselectstart = function () { return false; };
 753         }-*/;
 754
 755         public static native void enableIESelection() /*-{
 756                 if ($doc.body.onselectstart != null)
 757                 $doc.body.onselectstart = null;
 758         }-*/;
 759
 760         /**
 761          * @return the absolute path of the API root URL
 762          */
 763         public String getApiPath() {
 764                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 765                 return conf.apiPath();
 766         }
 767
 768         /**
 769          * History support for folder navigation
 770          * adds a new browser history entry
 771          *
 772          * @param key
 773          */
 774         public void updateHistory(String key){
 775 //              Replace any whitespace of the initial string to "+"
 776 //              String result = key.replaceAll("\\s","+");
 777 //              Add a new browser history entry.
 778 //              History.newItem(result);
 779                 History.newItem(key);
 780         }
 781
 782     public void deleteFolder(final Folder folder) {
 783         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + folder.getPrefix();
 784         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 785         builder.setHeader("If-Modified-Since", "0");
 786         builder.setHeader("X-Auth-Token", getToken());
 787         try {
 788             builder.sendRequest("", new RequestCallback() {
 789                 @Override
 790                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 791                     if (response.getStatusCode() == Response.SC_OK) {
 792                         JSONValue json = JSONParser.parseStrict(response.getText());
 793                         JSONArray array = json.isArray();
 794                         int i = 0;
 795                         if (array != null) {
 796                             deleteObject(folder, i, array);
 797                         }
 798                     }
 799                 }
 800
 801                 @Override
 802                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 803                     displayError("System error unable to delete folder: " + exception.getMessage());
 804                 }
 805             });
 806         }
 807         catch (RequestException e) {
 808         }
 809     }
 810
 811     void deleteObject(final Folder folder, final int i, final JSONArray array) {
 812         if (i < array.size()) {
 813             JSONObject o = array.get(i).isObject();
 814             if (o != null && !o.containsKey("subdir")) {
 815                 JSONString name = o.get("name").isString();
 816                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 817                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
 818                     @Override
 819                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 820                         deleteObject(folder, i + 1, array);
 821                     }
 822
 823                     @Override
 824                     public void onError(Throwable t) {
 825                         GWT.log("", t);
 826                         displayError("System error unable to delete folder: " + t.getMessage());
 827                     }
 828                 };
 829                 delete.setHeader("X-Auth-Token", getToken());
 830                 Scheduler.get().scheduleDeferred(delete);
 831             }
 832             else if (o != null) {
 833                 String subdir = o.get("subdir").isString().stringValue();
 834                 subdir = subdir.substring(0, subdir.length() - 1);
 835                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + subdir;
 836                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 837                 builder.setHeader("If-Modified-Since", "0");
 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 array2 = json.isArray();
 846                                 if (array2 != null) {
 847                                     int l = array.size();
 848                                     for (int j=0; j<array2.size(); j++) {
 849                                         array.set(l++, array2.get(j));
 850                                     }
 851                                 }
 852                                 deleteObject(folder, i + 1, array);
 853                             }
 854                         }
 855
 856                         @Override
 857                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 858                             displayError("System error unable to delete folder: " + exception.getMessage());
 859                         }
 860                     });
 861                 }
 862                 catch (RequestException e) {
 863                 }
 864             }
 865         }
 866         else {
 867             String path = folder.getUri();
 868             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 869                 @Override
 870                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 871                     updateFolder(folder.getParent(), true, new Command() {
 872
 873                                                 @Override
 874                                                 public void execute() {
 875                                                         updateStatistics();
 876                                                 }
 877                                         });
 878                 }
 879
 880                 @Override
 881                 public void onError(Throwable t) {
 882                     GWT.log("", t);
 883                     if (t instanceof RestException) {
 884                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 885                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 886                         else
 887                                 onSuccess(null);
 888                     }
 889                     else
 890                         displayError("System error unable to delete folder: " + t.getMessage());
 891                 }
 892             };
 893             deleteFolder.setHeader("X-Auth-Token", getToken());
 894             Scheduler.get().scheduleDeferred(deleteFolder);
 895         }
 896     }
 897
 898     public FolderTreeView getFolderTreeView() {
 899         return folderTreeView;
 900     }
 901
 902     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 903         if (iter.hasNext()) {
 904             File file = iter.next();
 905             String path = targetUri + "/" + file.getName();
 906             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 907                 @Override
 908                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 909                     copyFiles(iter, targetUsername, targetUri, callback);
 910                 }
 911
 912                 @Override
 913                 public void onError(Throwable t) {
 914                     GWT.log("", t);
 915                     if (t instanceof RestException) {
 916                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 917                     }
 918                     else
 919                         displayError("System error unable to copy file: "+t.getMessage());
 920                 }
 921             };
 922             copyFile.setHeader("X-Auth-Token", getToken());
 923             copyFile.setHeader("X-Copy-From", file.getUri());
 924             Scheduler.get().scheduleDeferred(copyFile);
 925         }
 926         else  if (callback != null) {
 927             callback.execute();
 928         }
 929     }
 930
 931     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
 932         if (iter.hasNext()) {
 933             final Folder f = iter.next();
 934             copyFolder(f, targetUsername, targetUri, new Command() {
 935
 936                                 @Override
 937                                 public void execute() {
 938                                         copySubfolders(iter, targetUsername, targetUri, callback);
 939                                 }
 940                         });
 941         }
 942         else  if (callback != null) {
 943             callback.execute();
 944         }
 945     }
 946
 947     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
 948         String path = targetUri + "/" + f.getName();
 949         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
 950             @Override
 951             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 952                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + f.getPrefix(), f) {
 953
 954                                         @Override
 955                                         public void onSuccess(final Folder _f) {
 956                                 Iterator<File> iter = _f.getFiles().iterator();
 957                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
 958                                     @Override
 959                                     public void execute() {
 960                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
 961                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
 962                                     }
 963                                 });
 964                                         }
 965
 966                                         @Override
 967                                         public void onError(Throwable t) {
 968                                 GWT.log("", t);
 969                                 if (t instanceof RestException) {
 970                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
 971                                 }
 972                                 else
 973                                     displayError("System error getting folder: " + t.getMessage());
 974                                         }
 975                                 };
 976                                 getFolder.setHeader("X-Auth-Token", getToken());
 977                                 Scheduler.get().scheduleDeferred(getFolder);
 978             }
 979
 980             @Override
 981             public void onError(Throwable t) {
 982                 GWT.log("", t);
 983                 if (t instanceof RestException) {
 984                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
 985                 }
 986                 else
 987                     displayError("System error creating folder: " + t.getMessage());
 988             }
 989         };
 990         createFolder.setHeader("X-Auth-Token", getToken());
 991         createFolder.setHeader("Accept", "*/*");
 992         createFolder.setHeader("Content-Length", "0");
 993         createFolder.setHeader("Content-Type", "application/folder");
 994         Scheduler.get().scheduleDeferred(createFolder);
 995     }
 996
 997     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
 998         selectionModels.add(model);
 999     }
1000
1001         public OtherSharedTreeView getOtherSharedTreeView() {
1002                 return otherSharedTreeView;
1003         }
1004
1005         public void updateTrash(boolean showFiles, Command callback) {
1006                 updateFolder(trash, showFiles, callback);
1007         }
1008
1009         public void updateGroupsNode() {
1010                 groupTreeView.updateGroupNode(null);
1011         }
1012
1013         public void addGroup(String groupname) {
1014                 Group newGroup = new Group(groupname);
1015                 account.addGroup(newGroup);
1016                 groupTreeView.updateGroupNode(null);
1017         }
1018
1019         public void removeGroup(Group group) {
1020                 account.removeGroup(group);
1021                 updateGroupsNode();
1022         }
1023
1024         public TreeView getSelectedTree() {
1025                 return selectedTree;
1026         }
1027
1028         public Folder getSelection() {
1029                 return selectedTree.getSelection();
1030         }
1031 }