code.grnet.gr Git - pithos/blob - web_client/src/gr/grnet/pithos/web/client/GSS.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 com.google.gwt.core.client.Scheduler;
  38 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  39 import com.google.gwt.event.dom.client.ContextMenuEvent;
  40 import com.google.gwt.event.dom.client.ContextMenuHandler;
  41 import com.google.gwt.event.shared.GwtEvent;
  42 import com.google.gwt.event.shared.GwtEvent.Type;
  43 import com.google.gwt.view.client.SelectionChangeEvent;
  44 import com.google.gwt.view.client.SingleSelectionModel;
  45 import gr.grnet.pithos.web.client.clipboard.Clipboard;
  46 import gr.grnet.pithos.web.client.commands.GetUserCommand;
  47 import gr.grnet.pithos.web.client.foldertree.AccountResource;
  48 import gr.grnet.pithos.web.client.foldertree.File;
  49 import gr.grnet.pithos.web.client.foldertree.Folder;
  50 import gr.grnet.pithos.web.client.foldertree.FolderTreeView;
  51 import gr.grnet.pithos.web.client.foldertree.FolderTreeViewModel;
  52 import gr.grnet.pithos.web.client.rest.GetRequest;
  53 import gr.grnet.pithos.web.client.rest.RestException;
  54 import gr.grnet.pithos.web.client.rest.resource.FileResource;
  55 import gr.grnet.pithos.web.client.rest.resource.OtherUserResource;
  56 import gr.grnet.pithos.web.client.rest.resource.RestResource;
  57 import gr.grnet.pithos.web.client.rest.resource.RestResourceWrapper;
  58 import gr.grnet.pithos.web.client.rest.resource.SharedResource;
  59 import gr.grnet.pithos.web.client.rest.resource.TrashResource;
  60 import gr.grnet.pithos.web.client.rest.resource.UserResource;
  61
  62 import java.util.ArrayList;
  63 import java.util.Arrays;
  64 import java.util.Date;
  65 import java.util.HashMap;
  66 import java.util.Iterator;
  67 import java.util.List;
  68
  69 import com.google.gwt.core.client.EntryPoint;
  70 import com.google.gwt.core.client.GWT;
  71 import com.google.gwt.event.logical.shared.ResizeEvent;
  72 import com.google.gwt.event.logical.shared.ResizeHandler;
  73 import com.google.gwt.event.logical.shared.SelectionEvent;
  74 import com.google.gwt.event.logical.shared.SelectionHandler;
  75 import com.google.gwt.http.client.URL;
  76 import com.google.gwt.i18n.client.DateTimeFormat;
  77 import com.google.gwt.resources.client.ClientBundle;
  78 import com.google.gwt.resources.client.ImageResource;
  79 import com.google.gwt.user.client.Cookies;
  80 import com.google.gwt.user.client.DOM;
  81 import com.google.gwt.user.client.Event;
  82 import com.google.gwt.user.client.History;
  83 import com.google.gwt.user.client.Window;
  84 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  85 import com.google.gwt.user.client.ui.DecoratedTabPanel;
  86 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  87 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
  88 import com.google.gwt.user.client.ui.RootPanel;
  89 import com.google.gwt.user.client.ui.TabPanel;
  90 import com.google.gwt.user.client.ui.VerticalPanel;
  91 import java.util.Set;
  92
  93 /**
  94  * Entry point classes define <code>onModuleLoad()</code>.
  95  */
  96 public class GSS implements EntryPoint, ResizeHandler {
  97
  98         /**
  99          * A constant that denotes the completion of an IncrementalCommand.
 100          */
 101         public static final boolean DONE = false;
 102
 103         public static final int VISIBLE_FILE_COUNT = 25;
 104
 105         /**
 106          * Instantiate an application-level image bundle. This object will provide
 107          * programmatic access to all the images needed by widgets.
 108          */
 109         private static Images images = (Images) GWT.create(Images.class);
 110
 111     public String getUsername() {
 112         return username;
 113     }
 114
 115     public void setAccount(AccountResource acct) {
 116         account = acct;
 117     }
 118
 119     public AccountResource getAccount() {
 120         return account;
 121     }
 122
 123     /**
 124          * An aggregate image bundle that pulls together all the images for this
 125          * application into a single bundle.
 126          */
 127         public interface Images extends ClientBundle, TopPanel.Images, StatusPanel.Images, FileMenu.Images, EditMenu.Images, SettingsMenu.Images, FilePropertiesDialog.Images, MessagePanel.Images, FileList.Images, Search.Images, CellTreeView.Images {
 128
 129                 @Source("gr/grnet/pithos/resources/document.png")
 130                 ImageResource folders();
 131
 132                 @Source("gr/grnet/pithos/resources/edit_group_22.png")
 133                 ImageResource groups();
 134
 135                 @Source("gr/grnet/pithos/resources/search.png")
 136                 ImageResource search();
 137         }
 138
 139         /**
 140          * The single GSS instance.
 141          */
 142         private static GSS singleton;
 143
 144         /**
 145          * Gets the singleton GSS instance.
 146          *
 147          * @return the GSS object
 148          */
 149         public static GSS get() {
 150                 if (GSS.singleton == null)
 151                         GSS.singleton = new GSS();
 152                 return GSS.singleton;
 153         }
 154
 155         /**
 156          * The Application Clipboard implementation;
 157          */
 158         private Clipboard clipboard = new Clipboard();
 159
 160         private UserResource currentUserResource;
 161
 162         /**
 163          * The top panel that contains the menu bar.
 164          */
 165         private TopPanel topPanel;
 166
 167         /**
 168          * The panel that contains the various system messages.
 169          */
 170         private MessagePanel messagePanel = new MessagePanel(GSS.images);
 171
 172         /**
 173          * The bottom panel that contains the status bar.
 174          */
 175         private StatusPanel statusPanel = null;
 176
 177         /**
 178          * The top right panel that displays the logged in user details
 179          */
 180         private UserDetailsPanel userDetailsPanel = new UserDetailsPanel();
 181
 182         /**
 183          * The file list widget.
 184          */
 185         private FileList fileList;
 186
 187         /**
 188          * The tab panel that occupies the right side of the screen.
 189          */
 190         private TabPanel inner = new DecoratedTabPanel(){
 191
 192 //              public void onBrowserEvent(com.google.gwt.user.client.Event event) {
 193 //                      if (DOM.eventGetType(event) == Event.ONCONTEXTMENU){
 194 //                              if(isFileListShowing()){
 195 //                                      getFileList().showContextMenu(event);
 196 //                              }
 197 //                      }
 198 //              };
 199         };
 200
 201
 202         /**
 203          * The split panel that will contain the left and right panels.
 204          */
 205         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 206
 207         /**
 208          * The widget that displays the tree of folders.
 209          */
 210
 211         private CellTreeView treeView = null;
 212         /**
 213          * The currently selected item in the application, for use by the Edit menu
 214          * commands. Potential types are Folder, File, User and Group.
 215          */
 216         private Object currentSelection;
 217
 218
 219         /**
 220          * The WebDAV password of the current user
 221          */
 222         private String webDAVPassword;
 223
 224         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 225
 226     private String username = null;
 227
 228     /**
 229      * The authentication token of the current user.
 230      */
 231     private String token;
 232
 233     private SingleSelectionModel<Folder> folderTreeSelectionModel;
 234     private FolderTreeViewModel folderTreeViewModel;
 235     private FolderTreeView folderTreeView;
 236
 237     private AccountResource account;
 238
 239         @Override
 240         public void onModuleLoad() {
 241                 // Initialize the singleton before calling the constructors of the
 242                 // various widgets that might call GSS.get().
 243                 singleton = this;
 244                 if (parseUserCredentials())
 245             initialize();
 246         }
 247
 248     private void initialize() {
 249         topPanel = new TopPanel(GSS.images);
 250         topPanel.setWidth("100%");
 251
 252         messagePanel.setWidth("100%");
 253         messagePanel.setVisible(false);
 254
 255
 256         // Inner contains the various lists.
 257         inner.sinkEvents(Event.ONCONTEXTMENU);
 258         inner.setAnimationEnabled(true);
 259         inner.getTabBar().addStyleName("pithos-MainTabBar");
 260         inner.getDeckPanel().addStyleName("pithos-MainTabPanelBottom");
 261
 262         inner.setWidth("100%");
 263
 264         inner.addSelectionHandler(new SelectionHandler<Integer>() {
 265
 266             @Override
 267             public void onSelection(SelectionEvent<Integer> event) {
 268                 int tabIndex = event.getSelectedItem();
 269                 switch (tabIndex) {
 270                     case 0:
 271                         fileList.updateCurrentlyShowingStats();
 272                         break;
 273                 }
 274             }
 275         });
 276
 277         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 278         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 279             @Override
 280             public void onSelectionChange(SelectionChangeEvent event) {
 281                 Folder f = folderTreeSelectionModel.getSelectedObject();
 282                 showFiles(f);
 283             }
 284         });
 285
 286         folderTreeViewModel = new FolderTreeViewModel(folderTreeSelectionModel);
 287         folderTreeView = new FolderTreeView(folderTreeViewModel);
 288
 289         fileList = new FileList(images, folderTreeView);
 290         inner.add(fileList, createHeaderHTML(AbstractImagePrototype.create(images.folders()), "Files"), true);
 291
 292         // Add the left and right panels to the split panel.
 293         splitPanel.setLeftWidget(folderTreeView);
 294         splitPanel.setRightWidget(inner);
 295         splitPanel.setSplitPosition("25%");
 296         splitPanel.setSize("100%", "100%");
 297         splitPanel.addStyleName("pithos-splitPanel");
 298
 299         // Create a dock panel that will contain the menu bar at the top,
 300         // the shortcuts to the left, the status bar at the bottom and the
 301         // right panel taking the rest.
 302         VerticalPanel outer = new VerticalPanel();
 303         outer.add(topPanel);
 304         outer.add(messagePanel);
 305         outer.add(splitPanel);
 306         statusPanel = new StatusPanel(GSS.images);
 307         outer.add(statusPanel);
 308         outer.setWidth("100%");
 309         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 310
 311         outer.setSpacing(4);
 312
 313         // Hook the window resize event, so that we can adjust the UI.
 314         Window.addResizeHandler(this);
 315         // Clear out the window's built-in margin, because we want to take
 316         // advantage of the entire client area.
 317         Window.setMargin("0px");
 318         // Finally, add the outer panel to the RootPanel, so that it will be
 319         // displayed.
 320         RootPanel.get().add(outer);
 321         // Call the window resized handler to get the initial sizes setup. Doing
 322         // this in a deferred command causes it to occur after all widgets'
 323         // sizes have been computed by the browser.
 324         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 325
 326             @Override
 327             public void execute() {
 328                 onWindowResized(Window.getClientHeight());
 329             }
 330         });
 331
 332         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 333             @Override
 334             public void execute() {
 335                 fetchAccount();
 336             }
 337         });
 338     }
 339
 340     private void showFiles(Folder f) {
 341         inner.selectTab(0);
 342         Set<File> files = f.getFiles();
 343         Iterator<File> iter = files.iterator();
 344         fetchFile(iter, files);
 345     }
 346
 347     private void fetchFile(final Iterator<File> iter, final Set<File> files) {
 348         if (iter.hasNext()) {
 349             File file = iter.next();
 350             String path = getApiPath() + username + "/" + file.getContainer() + "/" + file.getPath() + "?format=json";
 351             GetRequest<File> getFile = new GetRequest<File>(File.class, path, file) {
 352                 @Override
 353                 public void onSuccess(File result) {
 354                     fetchFile(iter, files);
 355                 }
 356
 357                 @Override
 358                 public void onError(Throwable t) {
 359                     GWT.log("Error getting file", t);
 360                     if (t instanceof RestException)
 361                         GSS.get().displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 362                     else
 363                         GSS.get().displayError("System error fetching file: " + t.getMessage());
 364                 }
 365             };
 366             getFile.setHeader("X-Auth-Token", "0000");
 367             Scheduler.get().scheduleDeferred(getFile);
 368         }
 369         else
 370             fileList.setFiles(new ArrayList<File>(files));
 371     }
 372
 373     /**
 374          * Parse and store the user credentials to the appropriate fields.
 375          */
 376         private boolean parseUserCredentials() {
 377                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 378                 String cookie = conf.authCookie();
 379                 String auth = Cookies.getCookie(cookie);
 380                 if (auth == null) {
 381                         authenticateUser();
 382             return false;
 383         }
 384         else {
 385             String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 386             if (authSplit.length != 2) {
 387                 authenticateUser();
 388                 return false;
 389             }
 390             else {
 391                 username = authSplit[0];
 392                 token = authSplit[1];
 393                 return true;
 394             }
 395         }
 396         }
 397
 398     /**
 399          * Redirect the user to the login page for authentication.
 400          */
 401         protected void authenticateUser() {
 402                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 403
 404 //        Window.Location.assign(GWT.getModuleBaseURL() + conf.loginUrl() + "?next=" + Window.Location.getHref());
 405         Cookies.setCookie(conf.authCookie(), "test" + conf.cookieSeparator() + "0000");
 406         Window.Location.assign(GWT.getModuleBaseURL() + "GSS.html");
 407         }
 408
 409     private void fetchAccount() {
 410         String path = getApiPath() + username + "?format=json";
 411
 412         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, path) {
 413             @Override
 414             public void onSuccess(AccountResource result) {
 415                 account = result;
 416                 statusPanel.displayStats(account);
 417                 folderTreeViewModel.initialize(account);
 418                 inner.selectTab(0);
 419             }
 420
 421             @Override
 422             public void onError(Throwable t) {
 423                 GWT.log("Error getting account", t);
 424                 if (t instanceof RestException)
 425                     GSS.get().displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 426                 else
 427                     GSS.get().displayError("System error fetching user data: " + t.getMessage());
 428             }
 429         };
 430         getAccount.setHeader("X-Auth-Token", token);
 431         Scheduler.get().scheduleDeferred(getAccount);
 432     }
 433
 434         /**
 435          * Clear the cookie and redirect the user to the logout page.
 436          */
 437         void logout() {
 438                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 439                 String cookie = conf.authCookie();
 440                 String domain = Window.Location.getHostName();
 441                 String path = Window.Location.getPath();
 442                 Cookies.setCookie(cookie, "", null, domain, path, false);
 443         String baseUrl = GWT.getModuleBaseURL();
 444         String homeUrl = baseUrl.substring(0, baseUrl.indexOf(path));
 445                 Window.Location.assign(homeUrl + conf.logoutUrl());
 446         }
 447
 448         /**
 449          * Creates an HTML fragment that places an image & caption together, for use
 450          * in a group header.
 451          *
 452          * @param imageProto an image prototype for an image
 453          * @param caption the group caption
 454          * @return the header HTML fragment
 455          */
 456         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 457                 String captionHTML = "<table class='caption' cellpadding='0' "
 458                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 459                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 460                 + caption + "</b></td></tr></table>";
 461                 return captionHTML;
 462         }
 463
 464         private void onWindowResized(int height) {
 465                 // Adjust the split panel to take up the available room in the window.
 466                 int newHeight = height - splitPanel.getAbsoluteTop() - 44;
 467                 if (newHeight < 1)
 468                         newHeight = 1;
 469                 splitPanel.setHeight("" + newHeight);
 470                 inner.setHeight("" + newHeight);
 471         }
 472
 473         @Override
 474         public void onResize(ResizeEvent event) {
 475                 int height = event.getHeight();
 476                 onWindowResized(height);
 477         }
 478
 479         public boolean isFileListShowing() {
 480                 int tab = inner.getTabBar().getSelectedTab();
 481                 if (tab == 0)
 482                         return true;
 483                 return false;
 484         }
 485
 486         public boolean isSearchResultsShowing() {
 487                 int tab = inner.getTabBar().getSelectedTab();
 488                 if (tab == 2)
 489                         return true;
 490                 return false;
 491         }
 492
 493         /**
 494          * Make the file list visible.
 495          *
 496          * @param update
 497          */
 498         public void showFileList(boolean update) {
 499                 if(update){
 500                         getTreeView().refreshCurrentNode(true);
 501                 }
 502                 else{
 503                         RestResource currentFolder = getTreeView().getSelection();
 504                         if(currentFolder!=null){
 505                                 showFileList(currentFolder);
 506                 }
 507                 }
 508
 509         }
 510
 511         public void showFileList(RestResource r) {
 512                 showFileList(r,true);
 513         }
 514
 515         public void showFileList(RestResource r, boolean clearSelection) {
 516                 RestResource currentFolder = r;
 517                 if(currentFolder!=null){
 518                         List<FileResource> files = null;
 519                         if (currentFolder instanceof RestResourceWrapper) {
 520                                 RestResourceWrapper folder = (RestResourceWrapper) currentFolder;
 521                                 files = folder.getResource().getFiles();
 522                         }
 523                 }
 524                 inner.selectTab(0);
 525         }
 526
 527         /**
 528          * Display the 'loading' indicator.
 529          */
 530         public void showLoadingIndicator(String message, String path) {
 531                 if(path!=null){
 532                         String[] split = path.split("/");
 533                         message = message +" "+URL.decode(split[split.length-1]);
 534                 }
 535                 topPanel.getLoading().show(message);
 536         }
 537
 538         /**
 539          * Hide the 'loading' indicator.
 540          */
 541         public void hideLoadingIndicator() {
 542                 topPanel.getLoading().hide();
 543         }
 544
 545         /**
 546          * A native JavaScript method to reach out to the browser's window and
 547          * invoke its resizeTo() method.
 548          *
 549          * @param x the new width
 550          * @param y the new height
 551          */
 552         public static native void resizeTo(int x, int y) /*-{
 553                 $wnd.resizeTo(x,y);
 554         }-*/;
 555
 556         /**
 557          * A helper method that returns true if the user's list is currently visible
 558          * and false if it is hidden.
 559          *
 560          * @return true if the user list is visible
 561          */
 562         public boolean isUserListVisible() {
 563                 return inner.getTabBar().getSelectedTab() == 1;
 564         }
 565
 566         /**
 567          * Display an error message.
 568          *
 569          * @param msg the message to display
 570          */
 571         public void displayError(String msg) {
 572                 messagePanel.displayError(msg);
 573         }
 574
 575         /**
 576          * Display a warning message.
 577          *
 578          * @param msg the message to display
 579          */
 580         public void displayWarning(String msg) {
 581                 messagePanel.displayWarning(msg);
 582         }
 583
 584         /**
 585          * Display an informational message.
 586          *
 587          * @param msg the message to display
 588          */
 589         public void displayInformation(String msg) {
 590                 messagePanel.displayInformation(msg);
 591         }
 592
 593         /**
 594          * Retrieve the folders.
 595          *
 596          * @return the folders
 597
 598         public Folders getFolders() {
 599                 return folders;
 600         }*/
 601
 602         /**
 603          * Retrieve the currentSelection.
 604          *
 605          * @return the currentSelection
 606          */
 607         public Object getCurrentSelection() {
 608                 return currentSelection;
 609         }
 610
 611         /**
 612          * Modify the currentSelection.
 613          *
 614          * @param newCurrentSelection the currentSelection to set
 615          */
 616         public void setCurrentSelection(Object newCurrentSelection) {
 617                 currentSelection = newCurrentSelection;
 618         }
 619
 620         /**
 621          * Retrieve the fileList.
 622          *
 623          * @return the fileList
 624          */
 625         public FileList getFileList() {
 626                 return fileList;
 627         }
 628
 629         /**
 630          * Retrieve the topPanel.
 631          *
 632          * @return the topPanel
 633          */
 634         TopPanel getTopPanel() {
 635                 return topPanel;
 636         }
 637
 638         /**
 639          * Retrieve the clipboard.
 640          *
 641          * @return the clipboard
 642          */
 643         public Clipboard getClipboard() {
 644                 return clipboard;
 645         }
 646
 647         public StatusPanel getStatusPanel() {
 648                 return statusPanel;
 649         }
 650
 651         /**
 652          * Retrieve the userDetailsPanel.
 653          *
 654          * @return the userDetailsPanel
 655          */
 656         public UserDetailsPanel getUserDetailsPanel() {
 657                 return userDetailsPanel;
 658         }
 659
 660
 661
 662         public String getToken() {
 663                 return token;
 664         }
 665
 666         public String getWebDAVPassword() {
 667                 return webDAVPassword;
 668         }
 669
 670         /**
 671          * Retrieve the currentUserResource.
 672          *
 673          * @return the currentUserResource
 674          */
 675         public UserResource getCurrentUserResource() {
 676                 return currentUserResource;
 677         }
 678
 679         /**
 680          * Modify the currentUserResource.
 681          *
 682          * @param newUser the new currentUserResource
 683          */
 684         public void setCurrentUserResource(UserResource newUser) {
 685                 currentUserResource = newUser;
 686         }
 687
 688         public static native void preventIESelection() /*-{
 689                 $doc.body.onselectstart = function () { return false; };
 690         }-*/;
 691
 692         public static native void enableIESelection() /*-{
 693                 if ($doc.body.onselectstart != null)
 694                 $doc.body.onselectstart = null;
 695         }-*/;
 696
 697         /**
 698          * @return the absolute path of the API root URL
 699          */
 700         public String getApiPath() {
 701                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 702                 return conf.apiPath();
 703         }
 704
 705         /**
 706          * Convert server date to local time according to browser timezone
 707          * and format it according to localized pattern.
 708          * Time is always formatted to 24hr format.
 709          * NB: This assumes that server runs in UTC timezone. Otherwise
 710          * we would need to adjust for server time offset as well.
 711          *
 712          * @param date
 713          * @return String
 714          */
 715         public static String formatLocalDateTime(Date date) {
 716                 Date convertedDate = new Date(date.getTime() - date.getTimezoneOffset());
 717                 final DateTimeFormat dateFormatter = DateTimeFormat.getShortDateFormat();
 718                 final DateTimeFormat timeFormatter = DateTimeFormat.getFormat("HH:mm");
 719                 String datePart = dateFormatter.format(convertedDate);
 720                 String timePart = timeFormatter.format(convertedDate);
 721                 return datePart + " " + timePart;
 722         }
 723
 724         /**
 725          * History support for folder navigation
 726          * adds a new browser history entry
 727          *
 728          * @param key
 729          */
 730         public void updateHistory(String key){
 731 //              Replace any whitespace of the initial string to "+"
 732 //              String result = key.replaceAll("\\s","+");
 733 //              Add a new browser history entry.
 734 //              History.newItem(result);
 735                 History.newItem(key);
 736         }
 737
 738         /**
 739          * This method examines the token input and add a "/" at the end in case it's omitted.
 740          * This happens only in Files/trash/, Files/shared/, Files/others.
 741          *
 742          * @param tokenInput
 743          * @return the formated token with a "/" at the end or the same tokenInput parameter
 744          */
 745
 746         private String handleSpecialFolderNames(String tokenInput){
 747                 List<String> pathsToCheck = Arrays.asList("Files/trash", "Files/shared", "Files/others");
 748                 if(pathsToCheck.contains(tokenInput))
 749                         return tokenInput + "/";
 750                 return tokenInput;
 751
 752         }
 753
 754         /**
 755          * Reject illegal resource names, like '.' or '..' or slashes '/'.
 756          */
 757         static boolean isValidResourceName(String name) {
 758                 if (".".equals(name) || "..".equals(name) || name.contains("/"))
 759                         return false;
 760                 return true;
 761         }
 762
 763         public void putUserToMap(String _userName, String _userFullName){
 764                 userFullNameMap.put(_userName, _userFullName);
 765         }
 766
 767         public String findUserFullName(String _userName){
 768                 return userFullNameMap.get(_userName);
 769         }
 770         public String getUserFullName(String _userName) {
 771
 772         if (GSS.get().findUserFullName(_userName) == null)
 773                 //if there is no userFullName found then the map fills with the given _userName,
 774                 //so userFullName = _userName
 775                 GSS.get().putUserToMap(_userName, _userName);
 776         else if(GSS.get().findUserFullName(_userName).indexOf('@') != -1){
 777                 //if the userFullName = _userName the GetUserCommand updates the userFullName in the map
 778                 GetUserCommand guc = new GetUserCommand(_userName);
 779                 guc.execute();
 780         }
 781         return GSS.get().findUserFullName(_userName);
 782         }
 783         /**
 784          * Retrieve the treeView.
 785          *
 786          * @return the treeView
 787          */
 788         public CellTreeView getTreeView() {
 789                 return treeView;
 790         }
 791
 792         public void onResourceUpdate(RestResource resource,boolean clearSelection){
 793                 if(resource instanceof RestResourceWrapper || resource instanceof OtherUserResource || resource instanceof TrashResource || resource instanceof SharedResource){
 794                         if(getTreeView().getSelection()!=null&&getTreeView().getSelection().getUri().equals(resource.getUri()))
 795                                 showFileList(resource,clearSelection);
 796                 }
 797
 798         }
 799 }