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.Image;
  98 import com.google.gwt.user.client.ui.RootPanel;
  99 import com.google.gwt.user.client.ui.VerticalPanel;
 100 import com.google.gwt.view.client.SelectionChangeEvent;
 101 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
 102 import com.google.gwt.view.client.SingleSelectionModel;
 103
 104 /**
 105  * Entry point classes define <code>onModuleLoad()</code>.
 106  */
 107 public class Pithos implements EntryPoint, ResizeHandler {
 108
 109         public static final String HOME_CONTAINER = "pithos";
 110
 111         public static final String TRASH_CONTAINER = "trash";
 112
 113         /**
 114          * Instantiate an application-level image bundle. This object will provide
 115          * programmatic access to all the images needed by widgets.
 116          */
 117         static Images images = (Images) GWT.create(Images.class);
 118
 119     public String getUsername() {
 120         return username;
 121     }
 122
 123     public void setAccount(AccountResource acct) {
 124         account = acct;
 125     }
 126
 127     public AccountResource getAccount() {
 128         return account;
 129     }
 130
 131     public void updateFolder(Folder f, boolean showfiles, Command callback) {
 132         folderTreeView.updateFolder(f, showfiles, callback);
 133     }
 134
 135     public void updateGroupNode(Group group) {
 136         groupTreeView.updateGroupNode(group);
 137     }
 138
 139     public void updateSharedFolder(Folder f, boolean showfiles) {
 140         mysharedTreeView.updateFolder(f, showfiles);
 141     }
 142
 143     public void updateOtherSharedFolder(Folder f, boolean showfiles) {
 144         otherSharedTreeView.updateFolder(f, showfiles);
 145     }
 146
 147     public void updateTag(Tag t) {
 148         tagTreeView.updateTag(t);
 149     }
 150
 151     public void updateTags() {
 152         tagTreeViewModel.initialize(getAllTags());
 153     }
 154
 155     public List<Tag> getAllTags() {
 156         List<Tag> tagList = new ArrayList<Tag>();
 157         for (Folder f : account.getContainers()) {
 158             for (String t : f.getTags()) {
 159                 tagList.add(new Tag(t));
 160             }
 161         }
 162         return tagList;
 163     }
 164
 165     public MysharedTreeView getMySharedTreeView() {
 166         return mysharedTreeView;
 167     }
 168
 169     /**
 170          * An aggregate image bundle that pulls together all the images for this
 171          * application into a single bundle.
 172          */
 173         public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 174
 175                 @Source("gr/grnet/pithos/resources/document.png")
 176                 ImageResource folders();
 177
 178                 @Source("gr/grnet/pithos/resources/edit_group_22.png")
 179                 ImageResource groups();
 180
 181                 @Source("gr/grnet/pithos/resources/advancedsettings.png")
 182                 ImageResource tools();
 183         }
 184
 185         /**
 186          * The Application Clipboard implementation;
 187          */
 188         private Clipboard clipboard = new Clipboard();
 189
 190         /**
 191          * The top panel that contains the menu bar.
 192          */
 193         private TopPanel topPanel;
 194
 195         /**
 196          * The panel that contains the various system messages.
 197          */
 198         private MessagePanel messagePanel = new MessagePanel(Pithos.images);
 199
 200         /**
 201          * The bottom panel that contains the status bar.
 202          */
 203         private StatusPanel statusPanel = null;
 204
 205         /**
 206          * The file list widget.
 207          */
 208         private FileList fileList;
 209
 210         /**
 211          * The tab panel that occupies the right side of the screen.
 212          */
 213         private VerticalPanel inner = new VerticalPanel();
 214
 215
 216         /**
 217          * The split panel that will contain the left and right panels.
 218          */
 219         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 220
 221         /**
 222          * The currently selected item in the application, for use by the Edit menu
 223          * commands. Potential types are Folder, File, User and Group.
 224          */
 225         private Object currentSelection;
 226
 227
 228         /**
 229          * The WebDAV password of the current user
 230          */
 231         private String webDAVPassword;
 232
 233         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 234
 235     private String username = null;
 236
 237     /**
 238      * The authentication token of the current user.
 239      */
 240     private String token;
 241
 242     SingleSelectionModel<Folder> folderTreeSelectionModel;
 243     FolderTreeViewModel folderTreeViewModel;
 244     FolderTreeView folderTreeView;
 245
 246     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 247     private MysharedTreeViewModel mysharedTreeViewModel;
 248     MysharedTreeView mysharedTreeView;
 249
 250     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 251     private OtherSharedTreeViewModel otherSharedTreeViewModel;
 252     OtherSharedTreeView otherSharedTreeView;
 253
 254     protected SingleSelectionModel<Tag> tagTreeSelectionModel;
 255     private TagTreeViewModel tagTreeViewModel;
 256     private TagTreeView tagTreeView;
 257
 258     GroupTreeViewModel groupTreeViewModel;
 259     private GroupTreeView groupTreeView;
 260
 261     private TreeView selectedTree;
 262     protected AccountResource account;
 263
 264     Folder trash;
 265
 266     @SuppressWarnings("rawtypes")
 267         private List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 268
 269     Button upload;
 270
 271     private HTML totalFiles;
 272
 273     private HTML usedBytes;
 274
 275     private HTML totalBytes;
 276
 277     private HTML usedPercent;
 278
 279     private HTML numOfFiles;
 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         Image toolsButton = AbstractImagePrototype.create(images.tools()).createImage();
 310         toolsButton.addClickHandler(new ClickHandler() {
 311
 312                         @Override
 313                         public void onClick(ClickEvent event) {
 314                 ToolsMenu menu = new ToolsMenu(Pithos.this, images, getSelectedTree(), getSelectedTree().getSelection(), getFileList().getSelectedFiles());
 315                 menu.setPopupPosition(event.getClientX(), event.getClientY());
 316                 menu.show();
 317                         }
 318                 });
 319         rightside.add(toolsButton);
 320         rightside.setCellHorizontalAlignment(toolsButton, HasHorizontalAlignment.ALIGN_LEFT);
 321
 322         HorizontalPanel folderStatistics = new HorizontalPanel();
 323         folderStatistics.addStyleName("pithos-folderStatistics");
 324         numOfFiles = new HTML();
 325         folderStatistics.add(numOfFiles);
 326         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 327         folderStatistics.add(numOfFilesLabel);
 328         rightside.add(folderStatistics);
 329         rightside.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 330
 331         inner.add(rightside);
 332         inner.setCellVerticalAlignment(rightside, HasVerticalAlignment.ALIGN_MIDDLE);
 333         inner.setCellHeight(rightside, "60px");
 334
 335         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 336         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 337             @Override
 338             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 339                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 340                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 341                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 342                     Folder f = folderTreeSelectionModel.getSelectedObject();
 343                     updateFolder(f, true, null);
 344                 }
 345             }
 346         });
 347         selectionModels.add(folderTreeSelectionModel);
 348
 349         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 350         folderTreeView = new FolderTreeView(folderTreeViewModel);
 351
 352         fileList = new FileList(this, images, folderTreeView);
 353         inner.add(fileList);
 354
 355         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 356         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 357             @Override
 358             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 359                 if (mysharedTreeSelectionModel.getSelectedObject() != null) {
 360                     deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
 361                     upload.setEnabled(false);
 362                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
 363                 }
 364             }
 365         });
 366         selectionModels.add(mysharedTreeSelectionModel);
 367         mysharedTreeViewModel = new MysharedTreeViewModel(this, mysharedTreeSelectionModel);
 368         mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
 369
 370         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 371         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 372             @Override
 373             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 374                 if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
 375                     deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
 376                     applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
 377                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
 378                 }
 379             }
 380         });
 381         selectionModels.add(otherSharedTreeSelectionModel);
 382         otherSharedTreeViewModel = new OtherSharedTreeViewModel(this, otherSharedTreeSelectionModel);
 383         otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
 384
 385         groupTreeViewModel = new GroupTreeViewModel(this);
 386         groupTreeView = new GroupTreeView(groupTreeViewModel);
 387
 388         VerticalPanel trees = new VerticalPanel();
 389
 390         upload = new Button("Upload File", new ClickHandler() {
 391             @Override
 392             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 393                 new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 394             }
 395         });
 396         upload.addStyleName("pithos-uploadButton");
 397         trees.add(upload);
 398
 399         HorizontalPanel treeHeader = new HorizontalPanel();
 400         treeHeader.addStyleName("pithos-treeHeader");
 401         HorizontalPanel statistics = new HorizontalPanel();
 402         statistics.add(new HTML("Total Objects:&nbsp;"));
 403         totalFiles = new HTML();
 404         statistics.add(totalFiles);
 405         statistics.add(new HTML("&nbsp;|&nbsp;Used:&nbsp;"));
 406         usedBytes = new HTML();
 407         statistics.add(usedBytes);
 408         statistics.add(new HTML("&nbsp;of&nbsp;"));
 409         totalBytes = new HTML();
 410         statistics.add(totalBytes);
 411         statistics.add(new HTML("&nbsp;("));
 412         usedPercent = new HTML();
 413         statistics.add(usedPercent);
 414         statistics.add(new HTML("%)"));
 415         treeHeader.add(statistics);
 416         trees.add(treeHeader);
 417
 418         trees.add(folderTreeView);
 419         trees.add(mysharedTreeView);
 420         trees.add(otherSharedTreeView);
 421 //        trees.add(tagTreeView);
 422         trees.add(groupTreeView);
 423         // Add the left and right panels to the split panel.
 424         splitPanel.setLeftWidget(trees);
 425         splitPanel.setRightWidget(inner);
 426         splitPanel.setSplitPosition("25%");
 427         splitPanel.setSize("100%", "100%");
 428         splitPanel.addStyleName("pithos-splitPanel");
 429         outer.add(splitPanel);
 430
 431         statusPanel = new StatusPanel();
 432         outer.add(statusPanel);
 433
 434
 435         // Hook the window resize event, so that we can adjust the UI.
 436         Window.addResizeHandler(this);
 437         // Clear out the window's built-in margin, because we want to take
 438         // advantage of the entire client area.
 439         Window.setMargin("0px");
 440         // Finally, add the outer panel to the RootPanel, so that it will be
 441         // displayed.
 442         RootPanel.get().add(outer);
 443         // Call the window resized handler to get the initial sizes setup. Doing
 444         // this in a deferred command causes it to occur after all widgets'
 445         // sizes have been computed by the browser.
 446         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 447
 448             @Override
 449             public void execute() {
 450                 onWindowResized(Window.getClientHeight());
 451             }
 452         });
 453
 454         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 455             @Override
 456             public void execute() {
 457                 fetchAccount(new Command() {
 458
 459                                         @Override
 460                                         public void execute() {
 461                                 if (!account.hasHomeContainer())
 462                                     createHomeContainer(account, this);
 463                                 else if (!account.hasTrashContainer())
 464                                         createTrashContainer(this);
 465                                 else {
 466                                         for (Folder f : account.getContainers())
 467                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 468                                                         trash = f;
 469                                                         break;
 470                                                 }
 471                                     folderTreeViewModel.initialize(account);
 472                                     groupTreeViewModel.initialize();
 473                                     showStatistics();
 474                                 }
 475                                         }
 476                                 });
 477             }
 478         });
 479     }
 480
 481     public void applyPermissions(Folder f) {
 482         if (f != null) {
 483                 if (f.isInTrash())
 484                         upload.setEnabled(false);
 485                 else {
 486                         Boolean[] perms = f.getPermissions().get(username);
 487                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 488                                 upload.setEnabled(true);
 489                         }
 490                         else
 491                                 upload.setEnabled(false);
 492                 }
 493         }
 494         else
 495                 upload.setEnabled(false);
 496         }
 497
 498         @SuppressWarnings({ "rawtypes", "unchecked" })
 499         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 500         selectedTree = _selectedTree;
 501         for (SingleSelectionModel s : selectionModels)
 502             if (!s.equals(model))
 503                 s.setSelected(s.getSelectedObject(), false);
 504     }
 505
 506     public void showFiles(Folder f) {
 507         Set<File> files = f.getFiles();
 508         showFiles(files);
 509     }
 510
 511     public void showFiles(Set<File> files) {
 512         //Iterator<File> iter = files.iterator();
 513         //fetchFile(iter, files);
 514         fileList.setFiles(new ArrayList<File>(files));
 515     }
 516
 517     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 518         if (iter.hasNext()) {
 519             File file = iter.next();
 520             String path = file.getUri() + "?format=json";
 521             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 522                 @Override
 523                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 524                     fetchFile(iter, files);
 525                 }
 526
 527                 @Override
 528                 public void onError(Throwable t) {
 529                     GWT.log("Error getting file", t);
 530                     if (t instanceof RestException)
 531                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 532                     else
 533                         displayError("System error fetching file: " + t.getMessage());
 534                 }
 535             };
 536             getFile.setHeader("X-Auth-Token", "0000");
 537             Scheduler.get().scheduleDeferred(getFile);
 538         }
 539         else
 540             fileList.setFiles(new ArrayList<File>(files));
 541     }
 542
 543     /**
 544          * Parse and store the user credentials to the appropriate fields.
 545          */
 546         private boolean parseUserCredentials() {
 547         username = Window.Location.getParameter("user");
 548         token = Window.Location.getParameter("token");
 549         Configuration conf = (Configuration) GWT.create(Configuration.class);
 550         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 551             String cookie = conf.authCookie();
 552             String auth = Cookies.getCookie(cookie);
 553             if (auth == null) {
 554                 authenticateUser();
 555                 return false;
 556             }
 557                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 558                         if (authSplit.length != 2) {
 559                             authenticateUser();
 560                             return false;
 561                         }
 562                         username = authSplit[0];
 563                         token = authSplit[1];
 564                         return true;
 565         }
 566                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
 567                 return true;
 568     }
 569
 570     /**
 571          * Redirect the user to the login page for authentication.
 572          */
 573         protected void authenticateUser() {
 574                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 575         Window.Location.assign(conf.loginUrl() + "?next=" + Window.Location.getHref());
 576         }
 577
 578         protected void fetchAccount(final Command callback) {
 579         String path = "?format=json";
 580
 581         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 582             @Override
 583             public void onSuccess(AccountResource _result) {
 584                 account = _result;
 585                 if (callback != null)
 586                         callback.execute();
 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         getAccount.setHeader("X-Auth-Token", token);
 599         Scheduler.get().scheduleDeferred(getAccount);
 600     }
 601
 602     public void updateStatistics() {
 603         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 604
 605                         @Override
 606                         public void onSuccess(@SuppressWarnings("unused") AccountResource _result) {
 607                                 showStatistics();
 608                         }
 609
 610                         @Override
 611                         public void onError(Throwable t) {
 612                 GWT.log("Error getting account", t);
 613                 if (t instanceof RestException)
 614                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 615                 else
 616                     displayError("System error fetching user data: " + t.getMessage());
 617                         }
 618                 };
 619                 headAccount.setHeader("X-Auth-Token", token);
 620                 Scheduler.get().scheduleDeferred(headAccount);
 621         }
 622
 623         protected void showStatistics() {
 624         totalFiles.setHTML(String.valueOf(account.getNumberOfObjects()));
 625         usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
 626         totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
 627         usedPercent.setHTML(String.valueOf(account.getUsedPercentage()));
 628         }
 629
 630         protected void createHomeContainer(final AccountResource _account, final Command callback) {
 631         String path = "/" + Pithos.HOME_CONTAINER;
 632         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 633             @Override
 634             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 635                 if (!_account.hasTrashContainer())
 636                         createTrashContainer(callback);
 637                 else
 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     protected void createTrashContainer(final Command callback) {
 655         String path = "/" + Pithos.TRASH_CONTAINER;
 656         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 657             @Override
 658             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 659                         fetchAccount(callback);
 660             }
 661
 662             @Override
 663             public void onError(Throwable t) {
 664                 GWT.log("Error creating pithos", t);
 665                 if (t instanceof RestException)
 666                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 667                 else
 668                     displayError("System error Error creating pithos: " + t.getMessage());
 669             }
 670         };
 671         createPithos.setHeader("X-Auth-Token", getToken());
 672         Scheduler.get().scheduleDeferred(createPithos);
 673     }
 674
 675     /**
 676          * Creates an HTML fragment that places an image & caption together, for use
 677          * in a group header.
 678          *
 679          * @param imageProto an image prototype for an image
 680          * @param caption the group caption
 681          * @return the header HTML fragment
 682          */
 683         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 684                 String captionHTML = "<table class='caption' cellpadding='0' "
 685                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 686                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 687                 + caption + "</b></td></tr></table>";
 688                 return captionHTML;
 689         }
 690
 691         protected void onWindowResized(int height) {
 692                 // Adjust the split panel to take up the available room in the window.
 693                 int newHeight = height - splitPanel.getAbsoluteTop() - 60;
 694                 if (newHeight < 1)
 695                         newHeight = 1;
 696                 splitPanel.setHeight("" + newHeight);
 697                 inner.setHeight("" + newHeight);
 698         }
 699
 700         @Override
 701         public void onResize(ResizeEvent event) {
 702                 int height = event.getHeight();
 703                 onWindowResized(height);
 704         }
 705
 706         /**
 707          * Display an error message.
 708          *
 709          * @param msg the message to display
 710          */
 711         public void displayError(String msg) {
 712                 messagePanel.displayError(msg);
 713         }
 714
 715         /**
 716          * Display a warning message.
 717          *
 718          * @param msg the message to display
 719          */
 720         public void displayWarning(String msg) {
 721                 messagePanel.displayWarning(msg);
 722         }
 723
 724         /**
 725          * Display an informational message.
 726          *
 727          * @param msg the message to display
 728          */
 729         public void displayInformation(String msg) {
 730                 messagePanel.displayInformation(msg);
 731         }
 732
 733         /**
 734          * Retrieve the fileList.
 735          *
 736          * @return the fileList
 737          */
 738         public FileList getFileList() {
 739                 return fileList;
 740         }
 741
 742         /**
 743          * Retrieve the topPanel.
 744          *
 745          * @return the topPanel
 746          */
 747         TopPanel getTopPanel() {
 748                 return topPanel;
 749         }
 750
 751         /**
 752          * Retrieve the clipboard.
 753          *
 754          * @return the clipboard
 755          */
 756         public Clipboard getClipboard() {
 757                 return clipboard;
 758         }
 759
 760         public StatusPanel getStatusPanel() {
 761                 return statusPanel;
 762         }
 763
 764         public String getToken() {
 765                 return token;
 766         }
 767
 768         public String getWebDAVPassword() {
 769                 return webDAVPassword;
 770         }
 771
 772         public static native void preventIESelection() /*-{
 773                 $doc.body.onselectstart = function () { return false; };
 774         }-*/;
 775
 776         public static native void enableIESelection() /*-{
 777                 if ($doc.body.onselectstart != null)
 778                 $doc.body.onselectstart = null;
 779         }-*/;
 780
 781         /**
 782          * @return the absolute path of the API root URL
 783          */
 784         public String getApiPath() {
 785                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 786                 return conf.apiPath();
 787         }
 788
 789         /**
 790          * History support for folder navigation
 791          * adds a new browser history entry
 792          *
 793          * @param key
 794          */
 795         public void updateHistory(String key){
 796 //              Replace any whitespace of the initial string to "+"
 797 //              String result = key.replaceAll("\\s","+");
 798 //              Add a new browser history entry.
 799 //              History.newItem(result);
 800                 History.newItem(key);
 801         }
 802
 803     public void deleteFolder(final Folder folder) {
 804         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + folder.getPrefix();
 805         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 806         builder.setHeader("If-Modified-Since", "0");
 807         builder.setHeader("X-Auth-Token", getToken());
 808         try {
 809             builder.sendRequest("", new RequestCallback() {
 810                 @Override
 811                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 812                     if (response.getStatusCode() == Response.SC_OK) {
 813                         JSONValue json = JSONParser.parseStrict(response.getText());
 814                         JSONArray array = json.isArray();
 815                         int i = 0;
 816                         if (array != null) {
 817                             deleteObject(folder, i, array);
 818                         }
 819                     }
 820                 }
 821
 822                 @Override
 823                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 824                     displayError("System error unable to delete folder: " + exception.getMessage());
 825                 }
 826             });
 827         }
 828         catch (RequestException e) {
 829         }
 830     }
 831
 832     void deleteObject(final Folder folder, final int i, final JSONArray array) {
 833         if (i < array.size()) {
 834             JSONObject o = array.get(i).isObject();
 835             if (o != null && !o.containsKey("subdir")) {
 836                 JSONString name = o.get("name").isString();
 837                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 838                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
 839                     @Override
 840                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 841                         deleteObject(folder, i + 1, array);
 842                     }
 843
 844                     @Override
 845                     public void onError(Throwable t) {
 846                         GWT.log("", t);
 847                         displayError("System error unable to delete folder: " + t.getMessage());
 848                     }
 849                 };
 850                 delete.setHeader("X-Auth-Token", getToken());
 851                 Scheduler.get().scheduleDeferred(delete);
 852             }
 853             else if (o != null) {
 854                 String subdir = o.get("subdir").isString().stringValue();
 855                 subdir = subdir.substring(0, subdir.length() - 1);
 856                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + subdir;
 857                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 858                 builder.setHeader("If-Modified-Since", "0");
 859                 builder.setHeader("X-Auth-Token", getToken());
 860                 try {
 861                     builder.sendRequest("", new RequestCallback() {
 862                         @Override
 863                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 864                             if (response.getStatusCode() == Response.SC_OK) {
 865                                 JSONValue json = JSONParser.parseStrict(response.getText());
 866                                 JSONArray array2 = json.isArray();
 867                                 if (array2 != null) {
 868                                     int l = array.size();
 869                                     for (int j=0; j<array2.size(); j++) {
 870                                         array.set(l++, array2.get(j));
 871                                     }
 872                                 }
 873                                 deleteObject(folder, i + 1, array);
 874                             }
 875                         }
 876
 877                         @Override
 878                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 879                             displayError("System error unable to delete folder: " + exception.getMessage());
 880                         }
 881                     });
 882                 }
 883                 catch (RequestException e) {
 884                 }
 885             }
 886         }
 887         else {
 888             String path = folder.getUri();
 889             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 890                 @Override
 891                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 892                     updateFolder(folder.getParent(), true, new Command() {
 893
 894                                                 @Override
 895                                                 public void execute() {
 896                                                         updateStatistics();
 897                                                 }
 898                                         });
 899                 }
 900
 901                 @Override
 902                 public void onError(Throwable t) {
 903                     GWT.log("", t);
 904                     if (t instanceof RestException) {
 905                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 906                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 907                         else
 908                                 onSuccess(null);
 909                     }
 910                     else
 911                         displayError("System error unable to delete folder: " + t.getMessage());
 912                 }
 913             };
 914             deleteFolder.setHeader("X-Auth-Token", getToken());
 915             Scheduler.get().scheduleDeferred(deleteFolder);
 916         }
 917     }
 918
 919     public FolderTreeView getFolderTreeView() {
 920         return folderTreeView;
 921     }
 922
 923     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 924         if (iter.hasNext()) {
 925             File file = iter.next();
 926             String path = targetUri + "/" + file.getName();
 927             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 928                 @Override
 929                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 930                     copyFiles(iter, targetUsername, targetUri, callback);
 931                 }
 932
 933                 @Override
 934                 public void onError(Throwable t) {
 935                     GWT.log("", t);
 936                     if (t instanceof RestException) {
 937                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 938                     }
 939                     else
 940                         displayError("System error unable to copy file: "+t.getMessage());
 941                 }
 942             };
 943             copyFile.setHeader("X-Auth-Token", getToken());
 944             copyFile.setHeader("X-Copy-From", file.getUri());
 945             Scheduler.get().scheduleDeferred(copyFile);
 946         }
 947         else  if (callback != null) {
 948             callback.execute();
 949         }
 950     }
 951
 952     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
 953         if (iter.hasNext()) {
 954             final Folder f = iter.next();
 955             copyFolder(f, targetUsername, targetUri, new Command() {
 956
 957                                 @Override
 958                                 public void execute() {
 959                                         copySubfolders(iter, targetUsername, targetUri, callback);
 960                                 }
 961                         });
 962         }
 963         else  if (callback != null) {
 964             callback.execute();
 965         }
 966     }
 967
 968     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
 969         String path = targetUri + "/" + f.getName();
 970         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
 971             @Override
 972             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 973                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + f.getPrefix(), f) {
 974
 975                                         @Override
 976                                         public void onSuccess(final Folder _f) {
 977                                 Iterator<File> iter = _f.getFiles().iterator();
 978                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
 979                                     @Override
 980                                     public void execute() {
 981                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
 982                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
 983                                     }
 984                                 });
 985                                         }
 986
 987                                         @Override
 988                                         public void onError(Throwable t) {
 989                                 GWT.log("", t);
 990                                 if (t instanceof RestException) {
 991                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
 992                                 }
 993                                 else
 994                                     displayError("System error getting folder: " + t.getMessage());
 995                                         }
 996                                 };
 997                                 getFolder.setHeader("X-Auth-Token", getToken());
 998                                 Scheduler.get().scheduleDeferred(getFolder);
 999             }
1000
1001             @Override
1002             public void onError(Throwable t) {
1003                 GWT.log("", t);
1004                 if (t instanceof RestException) {
1005                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
1006                 }
1007                 else
1008                     displayError("System error creating folder: " + t.getMessage());
1009             }
1010         };
1011         createFolder.setHeader("X-Auth-Token", getToken());
1012         createFolder.setHeader("Accept", "*/*");
1013         createFolder.setHeader("Content-Length", "0");
1014         createFolder.setHeader("Content-Type", "application/folder");
1015         Scheduler.get().scheduleDeferred(createFolder);
1016     }
1017
1018     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1019         selectionModels.add(model);
1020     }
1021
1022         public OtherSharedTreeView getOtherSharedTreeView() {
1023                 return otherSharedTreeView;
1024         }
1025
1026         public void updateTrash(boolean showFiles, Command callback) {
1027                 updateFolder(trash, showFiles, callback);
1028         }
1029
1030         public void updateGroupsNode() {
1031                 groupTreeView.updateGroupNode(null);
1032         }
1033
1034         public void addGroup(String groupname) {
1035                 Group newGroup = new Group(groupname);
1036                 account.addGroup(newGroup);
1037                 groupTreeView.updateGroupNode(null);
1038         }
1039
1040         public void removeGroup(Group group) {
1041                 account.removeGroup(group);
1042                 updateGroupsNode();
1043         }
1044
1045         public TreeView getSelectedTree() {
1046                 return selectedTree;
1047         }
1048
1049         public Folder getSelection() {
1050                 return selectedTree.getSelection();
1051         }
1052
1053         public void showFolderStatistics(int folderFileCount) {
1054                 numOfFiles.setHTML(String.valueOf(folderFileCount));
1055         }
1056 }