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         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 228
 229     private String username = null;
 230
 231     /**
 232      * The authentication token of the current user.
 233      */
 234     private String token;
 235
 236     SingleSelectionModel<Folder> folderTreeSelectionModel;
 237     FolderTreeViewModel folderTreeViewModel;
 238     FolderTreeView folderTreeView;
 239
 240     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 241     private MysharedTreeViewModel mysharedTreeViewModel;
 242     MysharedTreeView mysharedTreeView;
 243
 244     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 245     private OtherSharedTreeViewModel otherSharedTreeViewModel;
 246     OtherSharedTreeView otherSharedTreeView;
 247
 248     protected SingleSelectionModel<Tag> tagTreeSelectionModel;
 249     private TagTreeViewModel tagTreeViewModel;
 250     private TagTreeView tagTreeView;
 251
 252     GroupTreeViewModel groupTreeViewModel;
 253     private GroupTreeView groupTreeView;
 254
 255     private TreeView selectedTree;
 256     protected AccountResource account;
 257
 258     Folder trash;
 259
 260     @SuppressWarnings("rawtypes")
 261         private List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 262
 263     Button upload;
 264
 265     private HTML totalFiles;
 266
 267     private HTML usedBytes;
 268
 269     private HTML totalBytes;
 270
 271     private HTML usedPercent;
 272
 273     private HTML numOfFiles;
 274
 275     private Button toolsButton;
 276
 277         @Override
 278         public void onModuleLoad() {
 279                 if (parseUserCredentials())
 280             initialize();
 281         }
 282
 283     private void initialize() {
 284         VerticalPanel outer = new VerticalPanel();
 285         outer.setWidth("100%");
 286
 287         topPanel = new TopPanel(this, Pithos.images);
 288         topPanel.setWidth("100%");
 289         outer.add(topPanel);
 290
 291         messagePanel.setWidth("100%");
 292         messagePanel.setVisible(false);
 293         outer.add(messagePanel);
 294         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 295
 296
 297         // Inner contains the various lists.
 298         inner.sinkEvents(Event.ONCONTEXTMENU);
 299         inner.setWidth("100%");
 300
 301         HorizontalPanel rightside = new HorizontalPanel();
 302         rightside.addStyleName("pithos-rightSide");
 303         rightside.setSpacing(5);
 304
 305         toolsButton = new Button(AbstractImagePrototype.create(images.tools()).getHTML());
 306         toolsButton.addClickHandler(new ClickHandler() {
 307
 308                         @Override
 309                         public void onClick(ClickEvent event) {
 310                 ToolsMenu menu = new ToolsMenu(Pithos.this, images, getSelectedTree(), getSelectedTree().getSelection(), getFileList().getSelectedFiles());
 311                 if (!menu.isEmpty()) {
 312                             menu.setPopupPosition(event.getClientX(), event.getClientY());
 313                             menu.show();
 314                 }
 315                         }
 316                 });
 317         rightside.add(toolsButton);
 318         rightside.setCellHorizontalAlignment(toolsButton, HasHorizontalAlignment.ALIGN_LEFT);
 319
 320         HorizontalPanel folderStatistics = new HorizontalPanel();
 321         folderStatistics.addStyleName("pithos-folderStatistics");
 322         numOfFiles = new HTML();
 323         folderStatistics.add(numOfFiles);
 324         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 325         folderStatistics.add(numOfFilesLabel);
 326         rightside.add(folderStatistics);
 327         rightside.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 328
 329         inner.add(rightside);
 330         inner.setCellVerticalAlignment(rightside, HasVerticalAlignment.ALIGN_MIDDLE);
 331         inner.setCellHeight(rightside, "60px");
 332
 333         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 334         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 335             @Override
 336             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 337                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 338                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 339                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 340                     Folder f = folderTreeSelectionModel.getSelectedObject();
 341                     updateFolder(f, true, null);
 342                 }
 343             }
 344         });
 345         selectionModels.add(folderTreeSelectionModel);
 346
 347         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 348         folderTreeView = new FolderTreeView(folderTreeViewModel);
 349
 350         fileList = new FileList(this, images, folderTreeView);
 351         inner.add(fileList);
 352
 353         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 354         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 355             @Override
 356             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 357                 if (mysharedTreeSelectionModel.getSelectedObject() != null) {
 358                     deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
 359                     upload.setEnabled(false);
 360                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
 361                 }
 362             }
 363         });
 364         selectionModels.add(mysharedTreeSelectionModel);
 365         mysharedTreeViewModel = new MysharedTreeViewModel(this, mysharedTreeSelectionModel);
 366         mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
 367
 368         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 369         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 370             @Override
 371             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 372                 if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
 373                     deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
 374                     applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
 375                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
 376                 }
 377             }
 378         });
 379         selectionModels.add(otherSharedTreeSelectionModel);
 380         otherSharedTreeViewModel = new OtherSharedTreeViewModel(this, otherSharedTreeSelectionModel);
 381         otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
 382
 383         groupTreeViewModel = new GroupTreeViewModel(this);
 384         groupTreeView = new GroupTreeView(groupTreeViewModel);
 385
 386         VerticalPanel trees = new VerticalPanel();
 387
 388         upload = new Button("Upload File", new ClickHandler() {
 389             @Override
 390             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 391                 new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 392             }
 393         });
 394         upload.addStyleName("pithos-uploadButton");
 395         trees.add(upload);
 396
 397         HorizontalPanel treeHeader = new HorizontalPanel();
 398         treeHeader.addStyleName("pithos-treeHeader");
 399         HorizontalPanel statistics = new HorizontalPanel();
 400         statistics.add(new HTML("Total Objects:&nbsp;"));
 401         totalFiles = new HTML();
 402         statistics.add(totalFiles);
 403         statistics.add(new HTML("&nbsp;|&nbsp;Used:&nbsp;"));
 404         usedBytes = new HTML();
 405         statistics.add(usedBytes);
 406         statistics.add(new HTML("&nbsp;of&nbsp;"));
 407         totalBytes = new HTML();
 408         statistics.add(totalBytes);
 409         statistics.add(new HTML("&nbsp;("));
 410         usedPercent = new HTML();
 411         statistics.add(usedPercent);
 412         statistics.add(new HTML("%)"));
 413         treeHeader.add(statistics);
 414         trees.add(treeHeader);
 415
 416         trees.add(folderTreeView);
 417         trees.add(mysharedTreeView);
 418         trees.add(otherSharedTreeView);
 419 //        trees.add(tagTreeView);
 420         trees.add(groupTreeView);
 421         // Add the left and right panels to the split panel.
 422         splitPanel.setLeftWidget(trees);
 423         splitPanel.setRightWidget(inner);
 424         splitPanel.setSplitPosition("25%");
 425         splitPanel.setSize("100%", "100%");
 426         splitPanel.addStyleName("pithos-splitPanel");
 427         outer.add(splitPanel);
 428
 429         statusPanel = new StatusPanel();
 430         outer.add(statusPanel);
 431
 432
 433         // Hook the window resize event, so that we can adjust the UI.
 434         Window.addResizeHandler(this);
 435         // Clear out the window's built-in margin, because we want to take
 436         // advantage of the entire client area.
 437         Window.setMargin("0px");
 438         // Finally, add the outer panel to the RootPanel, so that it will be
 439         // displayed.
 440         RootPanel.get().add(outer);
 441         // Call the window resized handler to get the initial sizes setup. Doing
 442         // this in a deferred command causes it to occur after all widgets'
 443         // sizes have been computed by the browser.
 444         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 445
 446             @Override
 447             public void execute() {
 448                 onWindowResized(Window.getClientHeight());
 449             }
 450         });
 451
 452         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 453             @Override
 454             public void execute() {
 455                 fetchAccount(new Command() {
 456
 457                                         @Override
 458                                         public void execute() {
 459                                 if (!account.hasHomeContainer())
 460                                     createHomeContainer(account, this);
 461                                 else if (!account.hasTrashContainer())
 462                                         createTrashContainer(this);
 463                                 else {
 464                                         for (Folder f : account.getContainers())
 465                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 466                                                         trash = f;
 467                                                         break;
 468                                                 }
 469                                     folderTreeViewModel.initialize(account);
 470                                     groupTreeViewModel.initialize();
 471                                     showStatistics();
 472                                 }
 473                                         }
 474                                 });
 475             }
 476         });
 477     }
 478
 479     public void applyPermissions(Folder f) {
 480         if (f != null) {
 481                 if (f.isInTrash())
 482                         upload.setEnabled(false);
 483                 else {
 484                         Boolean[] perms = f.getPermissions().get(username);
 485                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 486                                 upload.setEnabled(true);
 487                         }
 488                         else
 489                                 upload.setEnabled(false);
 490                 }
 491         }
 492         else
 493                 upload.setEnabled(false);
 494         }
 495
 496         @SuppressWarnings({ "rawtypes", "unchecked" })
 497         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 498         selectedTree = _selectedTree;
 499         for (SingleSelectionModel s : selectionModels)
 500             if (!s.equals(model))
 501                 s.setSelected(s.getSelectedObject(), false);
 502     }
 503
 504     public void showFiles(Folder f) {
 505         Set<File> files = f.getFiles();
 506         showFiles(files);
 507     }
 508
 509     public void showFiles(Set<File> files) {
 510         //Iterator<File> iter = files.iterator();
 511         //fetchFile(iter, files);
 512         fileList.setFiles(new ArrayList<File>(files));
 513     }
 514
 515     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 516         if (iter.hasNext()) {
 517             File file = iter.next();
 518             String path = file.getUri() + "?format=json";
 519             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 520                 @Override
 521                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 522                     fetchFile(iter, files);
 523                 }
 524
 525                 @Override
 526                 public void onError(Throwable t) {
 527                     GWT.log("Error getting file", t);
 528                     if (t instanceof RestException)
 529                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 530                     else
 531                         displayError("System error fetching file: " + t.getMessage());
 532                 }
 533             };
 534             getFile.setHeader("X-Auth-Token", "0000");
 535             Scheduler.get().scheduleDeferred(getFile);
 536         }
 537         else
 538             fileList.setFiles(new ArrayList<File>(files));
 539     }
 540
 541     /**
 542          * Parse and store the user credentials to the appropriate fields.
 543          */
 544         private boolean parseUserCredentials() {
 545         username = Window.Location.getParameter("user");
 546         token = Window.Location.getParameter("token");
 547         Configuration conf = (Configuration) GWT.create(Configuration.class);
 548         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 549             String cookie = conf.authCookie();
 550             String auth = Cookies.getCookie(cookie);
 551             if (auth == null) {
 552                 authenticateUser();
 553                 return false;
 554             }
 555                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 556                         if (authSplit.length != 2) {
 557                             authenticateUser();
 558                             return false;
 559                         }
 560                         username = authSplit[0];
 561                         token = authSplit[1];
 562                         return true;
 563         }
 564                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
 565                 return true;
 566     }
 567
 568     /**
 569          * Redirect the user to the login page for authentication.
 570          */
 571         protected void authenticateUser() {
 572                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 573         Window.Location.assign(conf.loginUrl() + "?next=" + Window.Location.getHref());
 574         }
 575
 576         protected void fetchAccount(final Command callback) {
 577         String path = "?format=json";
 578
 579         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 580             @Override
 581             public void onSuccess(AccountResource _result) {
 582                 account = _result;
 583                 if (callback != null)
 584                         callback.execute();
 585             }
 586
 587             @Override
 588             public void onError(Throwable t) {
 589                 GWT.log("Error getting account", t);
 590                 if (t instanceof RestException)
 591                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 592                 else
 593                     displayError("System error fetching user data: " + t.getMessage());
 594             }
 595         };
 596         getAccount.setHeader("X-Auth-Token", token);
 597         Scheduler.get().scheduleDeferred(getAccount);
 598     }
 599
 600     public void updateStatistics() {
 601         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 602
 603                         @Override
 604                         public void onSuccess(@SuppressWarnings("unused") AccountResource _result) {
 605                                 showStatistics();
 606                         }
 607
 608                         @Override
 609                         public void onError(Throwable t) {
 610                 GWT.log("Error getting account", t);
 611                 if (t instanceof RestException)
 612                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 613                 else
 614                     displayError("System error fetching user data: " + t.getMessage());
 615                         }
 616                 };
 617                 headAccount.setHeader("X-Auth-Token", token);
 618                 Scheduler.get().scheduleDeferred(headAccount);
 619         }
 620
 621         protected void showStatistics() {
 622         totalFiles.setHTML(String.valueOf(account.getNumberOfObjects()));
 623         usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
 624         totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
 625         usedPercent.setHTML(String.valueOf(account.getUsedPercentage()));
 626         }
 627
 628         protected void createHomeContainer(final AccountResource _account, final Command callback) {
 629         String path = "/" + Pithos.HOME_CONTAINER;
 630         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 631             @Override
 632             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 633                 if (!_account.hasTrashContainer())
 634                         createTrashContainer(callback);
 635                 else
 636                         fetchAccount(callback);
 637             }
 638
 639             @Override
 640             public void onError(Throwable t) {
 641                 GWT.log("Error creating pithos", t);
 642                 if (t instanceof RestException)
 643                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 644                 else
 645                     displayError("System error Error creating pithos: " + t.getMessage());
 646             }
 647         };
 648         createPithos.setHeader("X-Auth-Token", getToken());
 649         Scheduler.get().scheduleDeferred(createPithos);
 650     }
 651
 652     protected void createTrashContainer(final Command callback) {
 653         String path = "/" + Pithos.TRASH_CONTAINER;
 654         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 655             @Override
 656             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 657                         fetchAccount(callback);
 658             }
 659
 660             @Override
 661             public void onError(Throwable t) {
 662                 GWT.log("Error creating pithos", t);
 663                 if (t instanceof RestException)
 664                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 665                 else
 666                     displayError("System error Error creating pithos: " + t.getMessage());
 667             }
 668         };
 669         createPithos.setHeader("X-Auth-Token", getToken());
 670         Scheduler.get().scheduleDeferred(createPithos);
 671     }
 672
 673     /**
 674          * Creates an HTML fragment that places an image & caption together, for use
 675          * in a group header.
 676          *
 677          * @param imageProto an image prototype for an image
 678          * @param caption the group caption
 679          * @return the header HTML fragment
 680          */
 681         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 682                 String captionHTML = "<table class='caption' cellpadding='0' "
 683                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 684                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 685                 + caption + "</b></td></tr></table>";
 686                 return captionHTML;
 687         }
 688
 689         protected void onWindowResized(int height) {
 690                 // Adjust the split panel to take up the available room in the window.
 691                 int newHeight = height - splitPanel.getAbsoluteTop() - 60;
 692                 if (newHeight < 1)
 693                         newHeight = 1;
 694                 splitPanel.setHeight("" + newHeight);
 695                 inner.setHeight("" + newHeight);
 696         }
 697
 698         @Override
 699         public void onResize(ResizeEvent event) {
 700                 int height = event.getHeight();
 701                 onWindowResized(height);
 702         }
 703
 704         /**
 705          * Display an error message.
 706          *
 707          * @param msg the message to display
 708          */
 709         public void displayError(String msg) {
 710                 messagePanel.displayError(msg);
 711         }
 712
 713         /**
 714          * Display a warning message.
 715          *
 716          * @param msg the message to display
 717          */
 718         public void displayWarning(String msg) {
 719                 messagePanel.displayWarning(msg);
 720         }
 721
 722         /**
 723          * Display an informational message.
 724          *
 725          * @param msg the message to display
 726          */
 727         public void displayInformation(String msg) {
 728                 messagePanel.displayInformation(msg);
 729         }
 730
 731         /**
 732          * Retrieve the fileList.
 733          *
 734          * @return the fileList
 735          */
 736         public FileList getFileList() {
 737                 return fileList;
 738         }
 739
 740         /**
 741          * Retrieve the topPanel.
 742          *
 743          * @return the topPanel
 744          */
 745         TopPanel getTopPanel() {
 746                 return topPanel;
 747         }
 748
 749         /**
 750          * Retrieve the clipboard.
 751          *
 752          * @return the clipboard
 753          */
 754         public Clipboard getClipboard() {
 755                 return clipboard;
 756         }
 757
 758         public StatusPanel getStatusPanel() {
 759                 return statusPanel;
 760         }
 761
 762         public String getToken() {
 763                 return token;
 764         }
 765
 766         public static native void preventIESelection() /*-{
 767                 $doc.body.onselectstart = function () { return false; };
 768         }-*/;
 769
 770         public static native void enableIESelection() /*-{
 771                 if ($doc.body.onselectstart != null)
 772                 $doc.body.onselectstart = null;
 773         }-*/;
 774
 775         /**
 776          * @return the absolute path of the API root URL
 777          */
 778         public String getApiPath() {
 779                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 780                 return conf.apiPath();
 781         }
 782
 783         /**
 784          * History support for folder navigation
 785          * adds a new browser history entry
 786          *
 787          * @param key
 788          */
 789         public void updateHistory(String key){
 790 //              Replace any whitespace of the initial string to "+"
 791 //              String result = key.replaceAll("\\s","+");
 792 //              Add a new browser history entry.
 793 //              History.newItem(result);
 794                 History.newItem(key);
 795         }
 796
 797     public void deleteFolder(final Folder folder) {
 798         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + folder.getPrefix();
 799         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 800         builder.setHeader("If-Modified-Since", "0");
 801         builder.setHeader("X-Auth-Token", getToken());
 802         try {
 803             builder.sendRequest("", new RequestCallback() {
 804                 @Override
 805                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 806                     if (response.getStatusCode() == Response.SC_OK) {
 807                         JSONValue json = JSONParser.parseStrict(response.getText());
 808                         JSONArray array = json.isArray();
 809                         int i = 0;
 810                         if (array != null) {
 811                             deleteObject(folder, i, array);
 812                         }
 813                     }
 814                 }
 815
 816                 @Override
 817                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 818                     displayError("System error unable to delete folder: " + exception.getMessage());
 819                 }
 820             });
 821         }
 822         catch (RequestException e) {
 823         }
 824     }
 825
 826     void deleteObject(final Folder folder, final int i, final JSONArray array) {
 827         if (i < array.size()) {
 828             JSONObject o = array.get(i).isObject();
 829             if (o != null && !o.containsKey("subdir")) {
 830                 JSONString name = o.get("name").isString();
 831                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 832                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
 833                     @Override
 834                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 835                         deleteObject(folder, i + 1, array);
 836                     }
 837
 838                     @Override
 839                     public void onError(Throwable t) {
 840                         GWT.log("", t);
 841                         displayError("System error unable to delete folder: " + t.getMessage());
 842                     }
 843                 };
 844                 delete.setHeader("X-Auth-Token", getToken());
 845                 Scheduler.get().scheduleDeferred(delete);
 846             }
 847             else if (o != null) {
 848                 String subdir = o.get("subdir").isString().stringValue();
 849                 subdir = subdir.substring(0, subdir.length() - 1);
 850                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + subdir;
 851                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 852                 builder.setHeader("If-Modified-Since", "0");
 853                 builder.setHeader("X-Auth-Token", getToken());
 854                 try {
 855                     builder.sendRequest("", new RequestCallback() {
 856                         @Override
 857                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 858                             if (response.getStatusCode() == Response.SC_OK) {
 859                                 JSONValue json = JSONParser.parseStrict(response.getText());
 860                                 JSONArray array2 = json.isArray();
 861                                 if (array2 != null) {
 862                                     int l = array.size();
 863                                     for (int j=0; j<array2.size(); j++) {
 864                                         array.set(l++, array2.get(j));
 865                                     }
 866                                 }
 867                                 deleteObject(folder, i + 1, array);
 868                             }
 869                         }
 870
 871                         @Override
 872                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 873                             displayError("System error unable to delete folder: " + exception.getMessage());
 874                         }
 875                     });
 876                 }
 877                 catch (RequestException e) {
 878                 }
 879             }
 880         }
 881         else {
 882             String path = folder.getUri();
 883             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 884                 @Override
 885                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 886                     updateFolder(folder.getParent(), true, new Command() {
 887
 888                                                 @Override
 889                                                 public void execute() {
 890                                                         updateStatistics();
 891                                                 }
 892                                         });
 893                 }
 894
 895                 @Override
 896                 public void onError(Throwable t) {
 897                     GWT.log("", t);
 898                     if (t instanceof RestException) {
 899                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 900                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 901                         else
 902                                 onSuccess(null);
 903                     }
 904                     else
 905                         displayError("System error unable to delete folder: " + t.getMessage());
 906                 }
 907             };
 908             deleteFolder.setHeader("X-Auth-Token", getToken());
 909             Scheduler.get().scheduleDeferred(deleteFolder);
 910         }
 911     }
 912
 913     public FolderTreeView getFolderTreeView() {
 914         return folderTreeView;
 915     }
 916
 917     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 918         if (iter.hasNext()) {
 919             File file = iter.next();
 920             String path = targetUri + "/" + file.getName();
 921             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 922                 @Override
 923                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 924                     copyFiles(iter, targetUsername, targetUri, callback);
 925                 }
 926
 927                 @Override
 928                 public void onError(Throwable t) {
 929                     GWT.log("", t);
 930                     if (t instanceof RestException) {
 931                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 932                     }
 933                     else
 934                         displayError("System error unable to copy file: "+t.getMessage());
 935                 }
 936             };
 937             copyFile.setHeader("X-Auth-Token", getToken());
 938             copyFile.setHeader("X-Copy-From", file.getUri());
 939             Scheduler.get().scheduleDeferred(copyFile);
 940         }
 941         else  if (callback != null) {
 942             callback.execute();
 943         }
 944     }
 945
 946     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
 947         if (iter.hasNext()) {
 948             final Folder f = iter.next();
 949             copyFolder(f, targetUsername, targetUri, new Command() {
 950
 951                                 @Override
 952                                 public void execute() {
 953                                         copySubfolders(iter, targetUsername, targetUri, callback);
 954                                 }
 955                         });
 956         }
 957         else  if (callback != null) {
 958             callback.execute();
 959         }
 960     }
 961
 962     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
 963         String path = targetUri + "/" + f.getName();
 964         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
 965             @Override
 966             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 967                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + f.getPrefix(), f) {
 968
 969                                         @Override
 970                                         public void onSuccess(final Folder _f) {
 971                                 Iterator<File> iter = _f.getFiles().iterator();
 972                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
 973                                     @Override
 974                                     public void execute() {
 975                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
 976                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
 977                                     }
 978                                 });
 979                                         }
 980
 981                                         @Override
 982                                         public void onError(Throwable t) {
 983                                 GWT.log("", t);
 984                                 if (t instanceof RestException) {
 985                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
 986                                 }
 987                                 else
 988                                     displayError("System error getting folder: " + t.getMessage());
 989                                         }
 990                                 };
 991                                 getFolder.setHeader("X-Auth-Token", getToken());
 992                                 Scheduler.get().scheduleDeferred(getFolder);
 993             }
 994
 995             @Override
 996             public void onError(Throwable t) {
 997                 GWT.log("", t);
 998                 if (t instanceof RestException) {
 999                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
1000                 }
1001                 else
1002                     displayError("System error creating folder: " + t.getMessage());
1003             }
1004         };
1005         createFolder.setHeader("X-Auth-Token", getToken());
1006         createFolder.setHeader("Accept", "*/*");
1007         createFolder.setHeader("Content-Length", "0");
1008         createFolder.setHeader("Content-Type", "application/folder");
1009         Scheduler.get().scheduleDeferred(createFolder);
1010     }
1011
1012     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1013         selectionModels.add(model);
1014     }
1015
1016         public OtherSharedTreeView getOtherSharedTreeView() {
1017                 return otherSharedTreeView;
1018         }
1019
1020         public void updateTrash(boolean showFiles, Command callback) {
1021                 updateFolder(trash, showFiles, callback);
1022         }
1023
1024         public void updateGroupsNode() {
1025                 groupTreeView.updateGroupNode(null);
1026         }
1027
1028         public void addGroup(String groupname) {
1029                 Group newGroup = new Group(groupname);
1030                 account.addGroup(newGroup);
1031                 groupTreeView.updateGroupNode(null);
1032         }
1033
1034         public void removeGroup(Group group) {
1035                 account.removeGroup(group);
1036                 updateGroupsNode();
1037         }
1038
1039         public TreeView getSelectedTree() {
1040                 return selectedTree;
1041         }
1042
1043         public Folder getSelection() {
1044                 return selectedTree.getSelection();
1045         }
1046
1047         public void showFolderStatistics(int folderFileCount) {
1048                 numOfFiles.setHTML(String.valueOf(folderFileCount));
1049         }
1050
1051         public GroupTreeView getGroupTreeView() {
1052                 return groupTreeView;
1053         }
1054 }