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.grouptree.User;
  48 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView;
  49 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeViewModel;
  50 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView;
  51 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeViewModel;
  52 import gr.grnet.pithos.web.client.rest.DeleteRequest;
  53 import gr.grnet.pithos.web.client.rest.GetRequest;
  54 import gr.grnet.pithos.web.client.rest.HeadRequest;
  55 import gr.grnet.pithos.web.client.rest.PutRequest;
  56 import gr.grnet.pithos.web.client.rest.RestException;
  57 import gr.grnet.pithos.web.client.tagtree.Tag;
  58 import gr.grnet.pithos.web.client.tagtree.TagTreeView;
  59 import gr.grnet.pithos.web.client.tagtree.TagTreeViewModel;
  60
  61 import java.util.ArrayList;
  62 import java.util.HashMap;
  63 import java.util.Iterator;
  64 import java.util.List;
  65 import java.util.Set;
  66
  67 import com.google.gwt.core.client.EntryPoint;
  68 import com.google.gwt.core.client.GWT;
  69 import com.google.gwt.core.client.Scheduler;
  70 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  71 import com.google.gwt.event.dom.client.ClickEvent;
  72 import com.google.gwt.event.dom.client.ClickHandler;
  73 import com.google.gwt.event.logical.shared.ResizeEvent;
  74 import com.google.gwt.event.logical.shared.ResizeHandler;
  75 import com.google.gwt.http.client.Request;
  76 import com.google.gwt.http.client.RequestBuilder;
  77 import com.google.gwt.http.client.RequestCallback;
  78 import com.google.gwt.http.client.RequestException;
  79 import com.google.gwt.http.client.Response;
  80 import com.google.gwt.json.client.JSONArray;
  81 import com.google.gwt.json.client.JSONObject;
  82 import com.google.gwt.json.client.JSONParser;
  83 import com.google.gwt.json.client.JSONString;
  84 import com.google.gwt.json.client.JSONValue;
  85 import com.google.gwt.resources.client.ImageResource;
  86 import com.google.gwt.user.client.Command;
  87 import com.google.gwt.user.client.Cookies;
  88 import com.google.gwt.user.client.Event;
  89 import com.google.gwt.user.client.History;
  90 import com.google.gwt.user.client.Window;
  91 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  92 import com.google.gwt.user.client.ui.Button;
  93 import com.google.gwt.user.client.ui.HTML;
  94 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  95 import com.google.gwt.user.client.ui.HasVerticalAlignment;
  96 import com.google.gwt.user.client.ui.HorizontalPanel;
  97 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
  98 import com.google.gwt.user.client.ui.Image;
  99 import com.google.gwt.user.client.ui.PushButton;
 100 import com.google.gwt.user.client.ui.RootPanel;
 101 import com.google.gwt.user.client.ui.VerticalPanel;
 102 import com.google.gwt.view.client.SelectionChangeEvent;
 103 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
 104 import com.google.gwt.view.client.SingleSelectionModel;
 105
 106 /**
 107  * Entry point classes define <code>onModuleLoad()</code>.
 108  */
 109 public class Pithos implements EntryPoint, ResizeHandler {
 110
 111         public static final String HOME_CONTAINER = "pithos";
 112
 113         public static final String TRASH_CONTAINER = "trash";
 114
 115         /**
 116          * Instantiate an application-level image bundle. This object will provide
 117          * programmatic access to all the images needed by widgets.
 118          */
 119         private static Images images = (Images) GWT.create(Images.class);
 120
 121     public String getUsername() {
 122         return username;
 123     }
 124
 125     public void setAccount(AccountResource acct) {
 126         account = acct;
 127     }
 128
 129     public AccountResource getAccount() {
 130         return account;
 131     }
 132
 133     public void updateFolder(Folder f, boolean showfiles, Command callback) {
 134         folderTreeView.updateFolder(f, showfiles, callback);
 135     }
 136
 137     public void updateGroupNode(Group group) {
 138         groupTreeView.updateGroupNode(group);
 139     }
 140
 141     public void updateSharedFolder(Folder f, boolean showfiles) {
 142         mysharedTreeView.updateFolder(f, showfiles);
 143     }
 144
 145     public void updateOtherSharedFolder(Folder f, boolean showfiles) {
 146         otherSharedTreeView.updateFolder(f, showfiles);
 147     }
 148
 149     public void updateTag(Tag t) {
 150         tagTreeView.updateTag(t);
 151     }
 152
 153     public void updateTags() {
 154         tagTreeViewModel.initialize(getAllTags());
 155     }
 156
 157     public List<Tag> getAllTags() {
 158         List<Tag> tagList = new ArrayList<Tag>();
 159         for (Folder f : account.getContainers()) {
 160             for (String t : f.getTags()) {
 161                 tagList.add(new Tag(t));
 162             }
 163         }
 164         return tagList;
 165     }
 166
 167     public MysharedTreeView getMySharedTreeView() {
 168         return mysharedTreeView;
 169     }
 170
 171     /**
 172          * An aggregate image bundle that pulls together all the images for this
 173          * application into a single bundle.
 174          */
 175         public interface Images extends TopPanel.Images, FileList.Images {
 176
 177                 @Source("gr/grnet/pithos/resources/document.png")
 178                 ImageResource folders();
 179
 180                 @Source("gr/grnet/pithos/resources/edit_group_22.png")
 181                 ImageResource groups();
 182
 183                 @Source("gr/grnet/pithos/resources/search.png")
 184                 ImageResource search();
 185         }
 186
 187         /**
 188          * The Application Clipboard implementation;
 189          */
 190         private Clipboard clipboard = new Clipboard();
 191
 192         /**
 193          * The top panel that contains the menu bar.
 194          */
 195         private TopPanel topPanel;
 196
 197         /**
 198          * The panel that contains the various system messages.
 199          */
 200         private MessagePanel messagePanel = new MessagePanel(Pithos.images);
 201
 202         /**
 203          * The bottom panel that contains the status bar.
 204          */
 205         private StatusPanel statusPanel = null;
 206
 207         /**
 208          * The file list widget.
 209          */
 210         private FileList fileList;
 211
 212         /**
 213          * The tab panel that occupies the right side of the screen.
 214          */
 215         private VerticalPanel inner = new VerticalPanel();
 216
 217
 218         /**
 219          * The split panel that will contain the left and right panels.
 220          */
 221         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 222
 223         /**
 224          * The currently selected item in the application, for use by the Edit menu
 225          * commands. Potential types are Folder, File, User and Group.
 226          */
 227         private Object currentSelection;
 228
 229
 230         /**
 231          * The WebDAV password of the current user
 232          */
 233         private String webDAVPassword;
 234
 235         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 236
 237     private String username = null;
 238
 239     /**
 240      * The authentication token of the current user.
 241      */
 242     private String token;
 243
 244     SingleSelectionModel<Folder> folderTreeSelectionModel;
 245     FolderTreeViewModel folderTreeViewModel;
 246     FolderTreeView folderTreeView;
 247
 248     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 249     private MysharedTreeViewModel mysharedTreeViewModel;
 250     MysharedTreeView mysharedTreeView;
 251
 252     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 253     private OtherSharedTreeViewModel otherSharedTreeViewModel;
 254     OtherSharedTreeView otherSharedTreeView;
 255
 256     protected SingleSelectionModel<Tag> tagTreeSelectionModel;
 257     private TagTreeViewModel tagTreeViewModel;
 258     private TagTreeView tagTreeView;
 259
 260     private GroupTreeViewModel groupTreeViewModel;
 261     private GroupTreeView groupTreeView;
 262
 263     private TreeView selectedTree;
 264     protected AccountResource account;
 265
 266     private Folder trash;
 267
 268     @SuppressWarnings("rawtypes")
 269         private List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 270
 271     Button upload;
 272
 273     private HTML totalFiles;
 274
 275     private HTML usedBytes;
 276
 277     private HTML totalBytes;
 278
 279     private HTML usedPercent;
 280
 281         @Override
 282         public void onModuleLoad() {
 283                 if (parseUserCredentials())
 284             initialize();
 285         }
 286
 287     private void initialize() {
 288         VerticalPanel outer = new VerticalPanel();
 289         outer.setWidth("100%");
 290
 291         topPanel = new TopPanel(this, Pithos.images);
 292         topPanel.setWidth("100%");
 293         outer.add(topPanel);
 294
 295         messagePanel.setWidth("100%");
 296         messagePanel.setVisible(false);
 297         outer.add(messagePanel);
 298         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 299
 300
 301         // Inner contains the various lists.
 302         inner.sinkEvents(Event.ONCONTEXTMENU);
 303         inner.setWidth("100%");
 304
 305         HorizontalPanel rightside = new HorizontalPanel();
 306         rightside.addStyleName("pithos-rightSide");
 307         rightside.setSpacing(5);
 308
 309         HTML folderStatistics = new HTML("5 Files (size: 1.1GB)");
 310         folderStatistics.addStyleName("pithos-folderStatistics");
 311         rightside.add(folderStatistics);
 312         inner.add(rightside);
 313         inner.setCellHorizontalAlignment(rightside, HasHorizontalAlignment.ALIGN_RIGHT);
 314         inner.setCellVerticalAlignment(rightside, HasVerticalAlignment.ALIGN_MIDDLE);
 315         inner.setCellHeight(rightside, "60px");
 316
 317         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 318         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 319             @Override
 320             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 321                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 322                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 323                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 324                     Folder f = folderTreeSelectionModel.getSelectedObject();
 325                     updateFolder(f, true, null);
 326                 }
 327             }
 328         });
 329         selectionModels.add(folderTreeSelectionModel);
 330
 331         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 332         folderTreeView = new FolderTreeView(folderTreeViewModel);
 333
 334         fileList = new FileList(this, images, folderTreeView);
 335         inner.add(fileList);
 336
 337         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 338         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 339             @Override
 340             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 341                 if (mysharedTreeSelectionModel.getSelectedObject() != null) {
 342                     deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
 343                     upload.setEnabled(false);
 344                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
 345                 }
 346             }
 347         });
 348         selectionModels.add(mysharedTreeSelectionModel);
 349         mysharedTreeViewModel = new MysharedTreeViewModel(this, mysharedTreeSelectionModel);
 350         mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
 351
 352         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 353         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 354             @Override
 355             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 356                 if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
 357                     deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
 358                     applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
 359                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
 360                 }
 361             }
 362         });
 363         selectionModels.add(otherSharedTreeSelectionModel);
 364         otherSharedTreeViewModel = new OtherSharedTreeViewModel(this, otherSharedTreeSelectionModel);
 365         otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
 366
 367         groupTreeViewModel = new GroupTreeViewModel(this);
 368         groupTreeView = new GroupTreeView(groupTreeViewModel);
 369
 370         VerticalPanel trees = new VerticalPanel();
 371
 372         upload = new Button("Upload File", new ClickHandler() {
 373             @Override
 374             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 375                 new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 376             }
 377         });
 378         upload.addStyleName("pithos-uploadButton");
 379         trees.add(upload);
 380
 381         HorizontalPanel treeHeader = new HorizontalPanel();
 382         treeHeader.addStyleName("pithos-treeHeader");
 383         HorizontalPanel statistics = new HorizontalPanel();
 384         statistics.add(new HTML("Total Objects:&nbsp;"));
 385         totalFiles = new HTML();
 386         statistics.add(totalFiles);
 387         statistics.add(new HTML("&nbsp;|&nbsp;Used:&nbsp;"));
 388         usedBytes = new HTML();
 389         statistics.add(usedBytes);
 390         statistics.add(new HTML("&nbsp;of&nbsp;"));
 391         totalBytes = new HTML();
 392         statistics.add(totalBytes);
 393         statistics.add(new HTML("&nbsp;("));
 394         usedPercent = new HTML();
 395         statistics.add(usedPercent);
 396         statistics.add(new HTML("%)"));
 397         treeHeader.add(statistics);
 398         trees.add(treeHeader);
 399
 400         trees.add(folderTreeView);
 401         trees.add(mysharedTreeView);
 402         trees.add(otherSharedTreeView);
 403 //        trees.add(tagTreeView);
 404         trees.add(groupTreeView);
 405         // Add the left and right panels to the split panel.
 406         splitPanel.setLeftWidget(trees);
 407         splitPanel.setRightWidget(inner);
 408         splitPanel.setSplitPosition("25%");
 409         splitPanel.setSize("100%", "100%");
 410         splitPanel.addStyleName("pithos-splitPanel");
 411         outer.add(splitPanel);
 412
 413         statusPanel = new StatusPanel();
 414         outer.add(statusPanel);
 415
 416
 417         // Hook the window resize event, so that we can adjust the UI.
 418         Window.addResizeHandler(this);
 419         // Clear out the window's built-in margin, because we want to take
 420         // advantage of the entire client area.
 421         Window.setMargin("0px");
 422         // Finally, add the outer panel to the RootPanel, so that it will be
 423         // displayed.
 424         RootPanel.get().add(outer);
 425         // Call the window resized handler to get the initial sizes setup. Doing
 426         // this in a deferred command causes it to occur after all widgets'
 427         // sizes have been computed by the browser.
 428         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 429
 430             @Override
 431             public void execute() {
 432                 onWindowResized(Window.getClientHeight());
 433             }
 434         });
 435
 436         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 437             @Override
 438             public void execute() {
 439                 fetchAccount(new Command() {
 440
 441                                         @Override
 442                                         public void execute() {
 443                                 if (!account.hasHomeContainer())
 444                                     createHomeContainer(account, this);
 445                                 else if (!account.hasTrashContainer())
 446                                         createTrashContainer(this);
 447                                 else {
 448                                         for (Folder f : account.getContainers())
 449                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 450                                                         trash = f;
 451                                                         break;
 452                                                 }
 453                                     folderTreeViewModel.initialize(account);
 454                                     groupTreeViewModel.initialize();
 455                                     showStatistics();
 456                                 }
 457                                         }
 458                                 });
 459             }
 460         });
 461     }
 462
 463     public void applyPermissions(Folder f) {
 464         if (f != null) {
 465                 if (f.isInTrash())
 466                         upload.setEnabled(false);
 467                 else {
 468                         Boolean[] perms = f.getPermissions().get(username);
 469                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 470                                 upload.setEnabled(true);
 471                         }
 472                         else
 473                                 upload.setEnabled(false);
 474                 }
 475         }
 476         else
 477                 upload.setEnabled(false);
 478         }
 479
 480         @SuppressWarnings({ "rawtypes", "unchecked" })
 481         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 482         selectedTree = _selectedTree;
 483         for (SingleSelectionModel s : selectionModels)
 484             if (!s.equals(model))
 485                 s.setSelected(s.getSelectedObject(), false);
 486     }
 487
 488     public void showFiles(Folder f) {
 489         Set<File> files = f.getFiles();
 490         showFiles(files);
 491     }
 492
 493     public void showFiles(Set<File> files) {
 494         //Iterator<File> iter = files.iterator();
 495         //fetchFile(iter, files);
 496         fileList.setFiles(new ArrayList<File>(files));
 497     }
 498
 499     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 500         if (iter.hasNext()) {
 501             File file = iter.next();
 502             String path = file.getUri() + "?format=json";
 503             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 504                 @Override
 505                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 506                     fetchFile(iter, files);
 507                 }
 508
 509                 @Override
 510                 public void onError(Throwable t) {
 511                     GWT.log("Error getting file", t);
 512                     if (t instanceof RestException)
 513                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 514                     else
 515                         displayError("System error fetching file: " + t.getMessage());
 516                 }
 517             };
 518             getFile.setHeader("X-Auth-Token", "0000");
 519             Scheduler.get().scheduleDeferred(getFile);
 520         }
 521         else
 522             fileList.setFiles(new ArrayList<File>(files));
 523     }
 524
 525     /**
 526          * Parse and store the user credentials to the appropriate fields.
 527          */
 528         private boolean parseUserCredentials() {
 529         username = Window.Location.getParameter("user");
 530         token = Window.Location.getParameter("token");
 531         Configuration conf = (Configuration) GWT.create(Configuration.class);
 532         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 533             String cookie = conf.authCookie();
 534             String auth = Cookies.getCookie(cookie);
 535             if (auth == null) {
 536                 authenticateUser();
 537                 return false;
 538             }
 539                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 540                         if (authSplit.length != 2) {
 541                             authenticateUser();
 542                             return false;
 543                         }
 544                         username = authSplit[0];
 545                         token = authSplit[1];
 546                         return true;
 547         }
 548                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
 549                 return true;
 550     }
 551
 552     /**
 553          * Redirect the user to the login page for authentication.
 554          */
 555         protected void authenticateUser() {
 556                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 557         Window.Location.assign(conf.loginUrl() + "?next=" + Window.Location.getHref());
 558         }
 559
 560         protected void fetchAccount(final Command callback) {
 561         String path = "?format=json";
 562
 563         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 564             @Override
 565             public void onSuccess(AccountResource _result) {
 566                 account = _result;
 567                 if (callback != null)
 568                         callback.execute();
 569             }
 570
 571             @Override
 572             public void onError(Throwable t) {
 573                 GWT.log("Error getting account", t);
 574                 if (t instanceof RestException)
 575                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 576                 else
 577                     displayError("System error fetching user data: " + t.getMessage());
 578             }
 579         };
 580         getAccount.setHeader("X-Auth-Token", token);
 581         Scheduler.get().scheduleDeferred(getAccount);
 582     }
 583
 584     public void updateStatistics() {
 585         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 586
 587                         @Override
 588                         public void onSuccess(AccountResource _result) {
 589                                 showStatistics();
 590                         }
 591
 592                         @Override
 593                         public void onError(Throwable t) {
 594                 GWT.log("Error getting account", t);
 595                 if (t instanceof RestException)
 596                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 597                 else
 598                     displayError("System error fetching user data: " + t.getMessage());
 599                         }
 600                 };
 601                 headAccount.setHeader("X-Auth-Token", token);
 602                 Scheduler.get().scheduleDeferred(headAccount);
 603         }
 604
 605         protected void showStatistics() {
 606         totalFiles.setHTML(String.valueOf(account.getNumberOfObjects()));
 607         usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
 608         totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
 609         usedPercent.setHTML(String.valueOf(account.getUsedPercentage()));
 610         }
 611
 612         protected void createHomeContainer(final AccountResource account, final Command callback) {
 613         String path = "/" + Pithos.HOME_CONTAINER;
 614         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 615             @Override
 616             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 617                 if (!account.hasTrashContainer())
 618                         createTrashContainer(callback);
 619                 else
 620                         fetchAccount(callback);
 621             }
 622
 623             @Override
 624             public void onError(Throwable t) {
 625                 GWT.log("Error creating pithos", t);
 626                 if (t instanceof RestException)
 627                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 628                 else
 629                     displayError("System error Error creating pithos: " + t.getMessage());
 630             }
 631         };
 632         createPithos.setHeader("X-Auth-Token", getToken());
 633         Scheduler.get().scheduleDeferred(createPithos);
 634     }
 635
 636     protected void createTrashContainer(final Command callback) {
 637         String path = "/" + Pithos.TRASH_CONTAINER;
 638         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 639             @Override
 640             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 641                         fetchAccount(callback);
 642             }
 643
 644             @Override
 645             public void onError(Throwable t) {
 646                 GWT.log("Error creating pithos", t);
 647                 if (t instanceof RestException)
 648                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 649                 else
 650                     displayError("System error Error creating pithos: " + t.getMessage());
 651             }
 652         };
 653         createPithos.setHeader("X-Auth-Token", getToken());
 654         Scheduler.get().scheduleDeferred(createPithos);
 655     }
 656
 657     /**
 658          * Creates an HTML fragment that places an image & caption together, for use
 659          * in a group header.
 660          *
 661          * @param imageProto an image prototype for an image
 662          * @param caption the group caption
 663          * @return the header HTML fragment
 664          */
 665         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 666                 String captionHTML = "<table class='caption' cellpadding='0' "
 667                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 668                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 669                 + caption + "</b></td></tr></table>";
 670                 return captionHTML;
 671         }
 672
 673         protected void onWindowResized(int height) {
 674                 // Adjust the split panel to take up the available room in the window.
 675                 int newHeight = height - splitPanel.getAbsoluteTop() - 60;
 676                 if (newHeight < 1)
 677                         newHeight = 1;
 678                 splitPanel.setHeight("" + newHeight);
 679                 inner.setHeight("" + newHeight);
 680         }
 681
 682         @Override
 683         public void onResize(ResizeEvent event) {
 684                 int height = event.getHeight();
 685                 onWindowResized(height);
 686         }
 687
 688         /**
 689          * Display an error message.
 690          *
 691          * @param msg the message to display
 692          */
 693         public void displayError(String msg) {
 694                 messagePanel.displayError(msg);
 695         }
 696
 697         /**
 698          * Display a warning message.
 699          *
 700          * @param msg the message to display
 701          */
 702         public void displayWarning(String msg) {
 703                 messagePanel.displayWarning(msg);
 704         }
 705
 706         /**
 707          * Display an informational message.
 708          *
 709          * @param msg the message to display
 710          */
 711         public void displayInformation(String msg) {
 712                 messagePanel.displayInformation(msg);
 713         }
 714
 715         /**
 716          * Retrieve the fileList.
 717          *
 718          * @return the fileList
 719          */
 720         public FileList getFileList() {
 721                 return fileList;
 722         }
 723
 724         /**
 725          * Retrieve the topPanel.
 726          *
 727          * @return the topPanel
 728          */
 729         TopPanel getTopPanel() {
 730                 return topPanel;
 731         }
 732
 733         /**
 734          * Retrieve the clipboard.
 735          *
 736          * @return the clipboard
 737          */
 738         public Clipboard getClipboard() {
 739                 return clipboard;
 740         }
 741
 742         public StatusPanel getStatusPanel() {
 743                 return statusPanel;
 744         }
 745
 746         public String getToken() {
 747                 return token;
 748         }
 749
 750         public String getWebDAVPassword() {
 751                 return webDAVPassword;
 752         }
 753
 754         public static native void preventIESelection() /*-{
 755                 $doc.body.onselectstart = function () { return false; };
 756         }-*/;
 757
 758         public static native void enableIESelection() /*-{
 759                 if ($doc.body.onselectstart != null)
 760                 $doc.body.onselectstart = null;
 761         }-*/;
 762
 763         /**
 764          * @return the absolute path of the API root URL
 765          */
 766         public String getApiPath() {
 767                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 768                 return conf.apiPath();
 769         }
 770
 771         /**
 772          * History support for folder navigation
 773          * adds a new browser history entry
 774          *
 775          * @param key
 776          */
 777         public void updateHistory(String key){
 778 //              Replace any whitespace of the initial string to "+"
 779 //              String result = key.replaceAll("\\s","+");
 780 //              Add a new browser history entry.
 781 //              History.newItem(result);
 782                 History.newItem(key);
 783         }
 784
 785     public void deleteFolder(final Folder folder) {
 786         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + folder.getPrefix();
 787         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 788         builder.setHeader("If-Modified-Since", "0");
 789         builder.setHeader("X-Auth-Token", getToken());
 790         try {
 791             builder.sendRequest("", new RequestCallback() {
 792                 @Override
 793                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 794                     if (response.getStatusCode() == Response.SC_OK) {
 795                         JSONValue json = JSONParser.parseStrict(response.getText());
 796                         JSONArray array = json.isArray();
 797                         int i = 0;
 798                         if (array != null) {
 799                             deleteObject(folder, i, array);
 800                         }
 801                     }
 802                 }
 803
 804                 @Override
 805                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 806                     displayError("System error unable to delete folder: " + exception.getMessage());
 807                 }
 808             });
 809         }
 810         catch (RequestException e) {
 811         }
 812     }
 813
 814     void deleteObject(final Folder folder, final int i, final JSONArray array) {
 815         if (i < array.size()) {
 816             JSONObject o = array.get(i).isObject();
 817             if (o != null && !o.containsKey("subdir")) {
 818                 JSONString name = o.get("name").isString();
 819                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 820                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
 821                     @Override
 822                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 823                         deleteObject(folder, i + 1, array);
 824                     }
 825
 826                     @Override
 827                     public void onError(Throwable t) {
 828                         GWT.log("", t);
 829                         displayError("System error unable to delete folder: " + t.getMessage());
 830                     }
 831                 };
 832                 delete.setHeader("X-Auth-Token", getToken());
 833                 Scheduler.get().scheduleDeferred(delete);
 834             }
 835             else if (o != null) {
 836                 String subdir = o.get("subdir").isString().stringValue();
 837                 subdir = subdir.substring(0, subdir.length() - 1);
 838                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + subdir;
 839                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 840                 builder.setHeader("If-Modified-Since", "0");
 841                 builder.setHeader("X-Auth-Token", getToken());
 842                 try {
 843                     builder.sendRequest("", new RequestCallback() {
 844                         @Override
 845                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 846                             if (response.getStatusCode() == Response.SC_OK) {
 847                                 JSONValue json = JSONParser.parseStrict(response.getText());
 848                                 JSONArray array2 = json.isArray();
 849                                 if (array2 != null) {
 850                                     int l = array.size();
 851                                     for (int j=0; j<array2.size(); j++) {
 852                                         array.set(l++, array2.get(j));
 853                                     }
 854                                 }
 855                                 deleteObject(folder, i + 1, array);
 856                             }
 857                         }
 858
 859                         @Override
 860                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 861                             displayError("System error unable to delete folder: " + exception.getMessage());
 862                         }
 863                     });
 864                 }
 865                 catch (RequestException e) {
 866                 }
 867             }
 868         }
 869         else {
 870             String path = folder.getUri();
 871             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 872                 @Override
 873                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 874                     updateFolder(folder.getParent(), true, new Command() {
 875
 876                                                 @Override
 877                                                 public void execute() {
 878                                                         updateStatistics();
 879                                                 }
 880                                         });
 881                 }
 882
 883                 @Override
 884                 public void onError(Throwable t) {
 885                     GWT.log("", t);
 886                     if (t instanceof RestException) {
 887                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 888                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 889                         else
 890                                 onSuccess(null);
 891                     }
 892                     else
 893                         displayError("System error unable to delete folder: " + t.getMessage());
 894                 }
 895             };
 896             deleteFolder.setHeader("X-Auth-Token", getToken());
 897             Scheduler.get().scheduleDeferred(deleteFolder);
 898         }
 899     }
 900
 901     public FolderTreeView getFolderTreeView() {
 902         return folderTreeView;
 903     }
 904
 905     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 906         if (iter.hasNext()) {
 907             File file = iter.next();
 908             String path = targetUri + "/" + file.getName();
 909             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 910                 @Override
 911                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 912                     copyFiles(iter, targetUsername, targetUri, callback);
 913                 }
 914
 915                 @Override
 916                 public void onError(Throwable t) {
 917                     GWT.log("", t);
 918                     if (t instanceof RestException) {
 919                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 920                     }
 921                     else
 922                         displayError("System error unable to copy file: "+t.getMessage());
 923                 }
 924             };
 925             copyFile.setHeader("X-Auth-Token", getToken());
 926             copyFile.setHeader("X-Copy-From", file.getUri());
 927             Scheduler.get().scheduleDeferred(copyFile);
 928         }
 929         else  if (callback != null) {
 930             callback.execute();
 931         }
 932     }
 933
 934     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
 935         if (iter.hasNext()) {
 936             final Folder f = iter.next();
 937             copyFolder(f, targetUsername, targetUri, new Command() {
 938
 939                                 @Override
 940                                 public void execute() {
 941                                         copySubfolders(iter, targetUsername, targetUri, callback);
 942                                 }
 943                         });
 944         }
 945         else  if (callback != null) {
 946             callback.execute();
 947         }
 948     }
 949
 950     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
 951         String path = targetUri + "/" + f.getName();
 952         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
 953             @Override
 954             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 955                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + f.getPrefix(), f) {
 956
 957                                         @Override
 958                                         public void onSuccess(final Folder f) {
 959                                 Iterator<File> iter = f.getFiles().iterator();
 960                                 copyFiles(iter, targetUsername, targetUri + "/" + f.getName(), new Command() {
 961                                     @Override
 962                                     public void execute() {
 963                                         Iterator<Folder> iterf = f.getSubfolders().iterator();
 964                                         copySubfolders(iterf, targetUsername, targetUri + "/" + f.getName(), callback);
 965                                     }
 966                                 });
 967                                         }
 968
 969                                         @Override
 970                                         public void onError(Throwable t) {
 971                                 GWT.log("", t);
 972                                 if (t instanceof RestException) {
 973                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
 974                                 }
 975                                 else
 976                                     displayError("System error getting folder: " + t.getMessage());
 977                                         }
 978                                 };
 979                                 getFolder.setHeader("X-Auth-Token", getToken());
 980                                 Scheduler.get().scheduleDeferred(getFolder);
 981             }
 982
 983             @Override
 984             public void onError(Throwable t) {
 985                 GWT.log("", t);
 986                 if (t instanceof RestException) {
 987                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
 988                 }
 989                 else
 990                     displayError("System error creating folder: " + t.getMessage());
 991             }
 992         };
 993         createFolder.setHeader("X-Auth-Token", getToken());
 994         createFolder.setHeader("Accept", "*/*");
 995         createFolder.setHeader("Content-Length", "0");
 996         createFolder.setHeader("Content-Type", "application/folder");
 997         Scheduler.get().scheduleDeferred(createFolder);
 998     }
 999
1000     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1001         selectionModels.add(model);
1002     }
1003
1004         public OtherSharedTreeView getOtherSharedTreeView() {
1005                 return otherSharedTreeView;
1006         }
1007
1008         public void updateTrash(boolean showFiles, Command callback) {
1009                 updateFolder(trash, showFiles, callback);
1010         }
1011
1012         public void updateGroupsNode() {
1013                 groupTreeView.updateGroupNode(null);
1014         }
1015
1016         public void addGroup(String groupname) {
1017                 Group newGroup = new Group(groupname);
1018                 account.addGroup(newGroup);
1019                 groupTreeView.updateGroupNode(null);
1020         }
1021
1022         public void removeGroup(Group group) {
1023                 account.removeGroup(group);
1024                 updateGroupsNode();
1025         }
1026
1027         public TreeView getSelectedTree() {
1028                 return selectedTree;
1029         }
1030
1031         public Folder getSelection() {
1032                 return selectedTree.getSelection();
1033         }
1034 }