code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/Pithos.java

   1 /*
   2  * Copyright 2011-2012 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
  58 import java.util.ArrayList;
  59 import java.util.HashMap;
  60 import java.util.Iterator;
  61 import java.util.List;
  62 import java.util.Set;
  63
  64 import com.google.gwt.core.client.EntryPoint;
  65 import com.google.gwt.core.client.GWT;
  66 import com.google.gwt.core.client.Scheduler;
  67 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  68 import com.google.gwt.event.dom.client.ClickEvent;
  69 import com.google.gwt.event.dom.client.ClickHandler;
  70 import com.google.gwt.event.logical.shared.ResizeEvent;
  71 import com.google.gwt.event.logical.shared.ResizeHandler;
  72 import com.google.gwt.http.client.Request;
  73 import com.google.gwt.http.client.RequestBuilder;
  74 import com.google.gwt.http.client.RequestCallback;
  75 import com.google.gwt.http.client.RequestException;
  76 import com.google.gwt.http.client.Response;
  77 import com.google.gwt.http.client.URL;
  78 import com.google.gwt.i18n.client.Dictionary;
  79 import com.google.gwt.i18n.client.NumberFormat;
  80 import com.google.gwt.json.client.JSONArray;
  81 import com.google.gwt.json.client.JSONObject;
  82 import com.google.gwt.json.client.JSONParser;
  83 import com.google.gwt.json.client.JSONString;
  84 import com.google.gwt.json.client.JSONValue;
  85 import com.google.gwt.resources.client.ImageResource;
  86 import com.google.gwt.resources.client.ImageResource.ImageOptions;
  87 import com.google.gwt.user.client.Command;
  88 import com.google.gwt.user.client.Cookies;
  89 import com.google.gwt.user.client.Event;
  90 import com.google.gwt.user.client.History;
  91 import com.google.gwt.user.client.Window;
  92 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  93 import com.google.gwt.user.client.ui.Button;
  94 import com.google.gwt.user.client.ui.Composite;
  95 import com.google.gwt.user.client.ui.HTML;
  96 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  97 import com.google.gwt.user.client.ui.HasVerticalAlignment;
  98 import com.google.gwt.user.client.ui.HorizontalPanel;
  99 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
 100 import com.google.gwt.user.client.ui.RootPanel;
 101 import com.google.gwt.user.client.ui.VerticalPanel;
 102 import com.google.gwt.view.client.SelectionChangeEvent;
 103 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
 104 import com.google.gwt.view.client.SingleSelectionModel;
 105
 106 /**
 107  * Entry point classes define <code>onModuleLoad()</code>.
 108  */
 109 public class Pithos implements EntryPoint, ResizeHandler {
 110
 111         public static final String HOME_CONTAINER = "pithos";
 112
 113         public static final String TRASH_CONTAINER = "trash";
 114
 115         public static final Configuration config = GWT.create(Configuration.class);
 116
 117         /**
 118          * Instantiate an application-level image bundle. This object will provide
 119          * programmatic access to all the images needed by widgets.
 120          */
 121         static Images images = (Images) GWT.create(Images.class);
 122
 123     public String getUsername() {
 124         return username;
 125     }
 126
 127     public void setAccount(AccountResource acct) {
 128         account = acct;
 129     }
 130
 131     public AccountResource getAccount() {
 132         return account;
 133     }
 134
 135     public void updateFolder(Folder f, boolean showfiles, Command callback) {
 136         folderTreeView.updateFolder(f, showfiles, callback);
 137     }
 138
 139     public void updateGroupNode(Group group) {
 140         groupTreeView.updateGroupNode(group);
 141     }
 142
 143     public void updateMySharedRoot() {
 144         mysharedTreeView.updateRoot();
 145     }
 146
 147     public void updateSharedFolder(Folder f, boolean showfiles) {
 148         mysharedTreeView.updateFolder(f, showfiles);
 149     }
 150
 151     public void updateOtherSharedFolder(Folder f, boolean showfiles) {
 152         otherSharedTreeView.updateFolder(f, showfiles);
 153     }
 154
 155     public MysharedTreeView getMySharedTreeView() {
 156         return mysharedTreeView;
 157     }
 158
 159     /**
 160          * An aggregate image bundle that pulls together all the images for this
 161          * application into a single bundle.
 162          */
 163         public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 164
 165                 @Source("gr/grnet/pithos/resources/document.png")
 166                 ImageResource folders();
 167
 168                 @Source("gr/grnet/pithos/resources/advancedsettings.png")
 169                 @ImageOptions(width=32, height=32)
 170                 ImageResource tools();
 171         }
 172
 173         private Throwable error;
 174
 175         /**
 176          * The Application Clipboard implementation;
 177          */
 178         private Clipboard clipboard = new Clipboard();
 179
 180         /**
 181          * The top panel that contains the menu bar.
 182          */
 183         private TopPanel topPanel;
 184
 185         /**
 186          * The panel that contains the various system messages.
 187          */
 188         private MessagePanel messagePanel = new MessagePanel(this, Pithos.images);
 189
 190         /**
 191          * The bottom panel that contains the status bar.
 192          */
 193         private StatusPanel statusPanel = null;
 194
 195         /**
 196          * The file list widget.
 197          */
 198         private FileList fileList;
 199
 200         /**
 201          * The tab panel that occupies the right side of the screen.
 202          */
 203         private VerticalPanel inner = new VerticalPanel();
 204
 205
 206         /**
 207          * The split panel that will contain the left and right panels.
 208          */
 209         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 210
 211         /**
 212          * The currently selected item in the application, for use by the Edit menu
 213          * commands. Potential types are Folder, File, User and Group.
 214          */
 215         private Object currentSelection;
 216
 217         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 218
 219     private String username = null;
 220
 221     /**
 222      * The authentication token of the current user.
 223      */
 224     private String token;
 225
 226     VerticalPanel trees;
 227
 228     SingleSelectionModel<Folder> folderTreeSelectionModel;
 229     FolderTreeViewModel folderTreeViewModel;
 230     FolderTreeView folderTreeView;
 231
 232     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 233     MysharedTreeViewModel mysharedTreeViewModel;
 234     MysharedTreeView mysharedTreeView = null;;
 235
 236     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 237     OtherSharedTreeViewModel otherSharedTreeViewModel;
 238     OtherSharedTreeView otherSharedTreeView = null;
 239
 240     GroupTreeViewModel groupTreeViewModel;
 241     private GroupTreeView groupTreeView;
 242
 243     TreeView selectedTree;
 244     protected AccountResource account;
 245
 246     Folder trash;
 247
 248     List<Composite> treeViews = new ArrayList<Composite>();
 249
 250     @SuppressWarnings("rawtypes") List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 251
 252     Button upload;
 253
 254     private HTML usedBytes;
 255
 256     private HTML totalBytes;
 257
 258     private HTML usedPercent;
 259
 260     private HTML numOfFiles;
 261
 262     private Toolbar toolbar;
 263
 264     private FileUploadDialog fileUploadDialog;
 265
 266         @Override
 267         public void onModuleLoad() {
 268                 if (parseUserCredentials())
 269             initialize();
 270         }
 271
 272     private void initialize() {
 273         boolean bareContent = Window.Location.getParameter("noframe") != null;
 274         String contentWidth = bareContent ? "100%" : "75%";
 275
 276         VerticalPanel outer = new VerticalPanel();
 277         outer.setWidth("100%");
 278         if (!bareContent) {
 279                 outer.addStyleName("pithos-outer");
 280         }
 281
 282         if (!bareContent) {
 283                 topPanel = new TopPanel(this, Pithos.images);
 284                 topPanel.setWidth("100%");
 285                 outer.add(topPanel);
 286                 outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 287         }
 288
 289         messagePanel.setVisible(false);
 290         outer.add(messagePanel);
 291         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 292         outer.setCellVerticalAlignment(messagePanel, HasVerticalAlignment.ALIGN_MIDDLE);
 293
 294         HorizontalPanel header = new HorizontalPanel();
 295         header.addStyleName("pithos-header");
 296         header.setWidth(contentWidth);
 297         if (bareContent)
 298                 header.addStyleName("pithos-header-noframe");
 299         upload = new Button("Upload", new ClickHandler() {
 300             @Override
 301             public void onClick(ClickEvent event) {
 302                 if (getSelection() != null)
 303                         new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 304             }
 305         });
 306         upload.addStyleName("pithos-uploadButton");
 307         header.add(upload);
 308         header.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_LEFT);
 309         header.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 310
 311         toolbar = new Toolbar(this);
 312         header.add(toolbar);
 313         header.setCellHorizontalAlignment(toolbar, HasHorizontalAlignment.ALIGN_CENTER);
 314         header.setCellVerticalAlignment(toolbar, HasVerticalAlignment.ALIGN_MIDDLE);
 315
 316         HorizontalPanel folderStatistics = new HorizontalPanel();
 317         folderStatistics.addStyleName("pithos-folderStatistics");
 318         numOfFiles = new HTML();
 319         folderStatistics.add(numOfFiles);
 320         folderStatistics.setCellVerticalAlignment(numOfFiles, HasVerticalAlignment.ALIGN_MIDDLE);
 321         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 322         folderStatistics.add(numOfFilesLabel);
 323         folderStatistics.setCellVerticalAlignment(numOfFilesLabel, HasVerticalAlignment.ALIGN_MIDDLE);
 324         header.add(folderStatistics);
 325         header.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 326         header.setCellVerticalAlignment(folderStatistics, HasVerticalAlignment.ALIGN_MIDDLE);
 327         header.setCellWidth(folderStatistics, "40px");
 328         outer.add(header);
 329         outer.setCellHorizontalAlignment(header, HasHorizontalAlignment.ALIGN_CENTER);
 330         // Inner contains the various lists.nner
 331         inner.sinkEvents(Event.ONCONTEXTMENU);
 332         inner.setWidth("100%");
 333
 334         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 335         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 336             @Override
 337             public void onSelectionChange(SelectionChangeEvent event) {
 338                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 339                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 340                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 341                     Folder f = folderTreeSelectionModel.getSelectedObject();
 342                         updateFolder(f, true, new Command() {
 343
 344                                 @Override
 345                                 public void execute() {
 346                                         updateStatistics();
 347                                 }
 348                         });
 349                 }
 350                 showRelevantToolbarButtons();
 351             }
 352         });
 353         selectionModels.add(folderTreeSelectionModel);
 354
 355         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 356         folderTreeView = new FolderTreeView(folderTreeViewModel);
 357         treeViews.add(folderTreeView);
 358
 359         fileList = new FileList(this, images, folderTreeView);
 360         inner.add(fileList);
 361
 362         groupTreeViewModel = new GroupTreeViewModel(this);
 363         groupTreeView = new GroupTreeView(groupTreeViewModel);
 364         treeViews.add(groupTreeView);
 365
 366         trees = new VerticalPanel();
 367         trees.setWidth("100%");
 368
 369
 370         HorizontalPanel treeHeader = new HorizontalPanel();
 371         treeHeader.addStyleName("pithos-treeHeader");
 372         treeHeader.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);
 373         treeHeader.setVerticalAlignment(HasVerticalAlignment.ALIGN_MIDDLE);
 374         HorizontalPanel statistics = new HorizontalPanel();
 375         statistics.addStyleName("pithos-statistics");
 376         statistics.add(new HTML("Used:&nbsp;"));
 377         usedBytes = new HTML();
 378         statistics.add(usedBytes);
 379         statistics.add(new HTML("&nbsp;of&nbsp;"));
 380         totalBytes = new HTML();
 381         statistics.add(totalBytes);
 382         statistics.add(new HTML("&nbsp;("));
 383         usedPercent = new HTML();
 384         statistics.add(usedPercent);
 385         statistics.add(new HTML(")"));
 386         treeHeader.add(statistics);
 387         treeHeader.setCellHorizontalAlignment(statistics, HasHorizontalAlignment.ALIGN_LEFT);
 388         trees.add(treeHeader);
 389
 390         trees.add(folderTreeView);
 391         trees.add(groupTreeView);
 392         // Add the left and right panels to the split panel.
 393         splitPanel.setLeftWidget(trees);
 394         splitPanel.setRightWidget(inner);
 395         splitPanel.setSplitPosition("35%");
 396         splitPanel.setSize("100%", "100%");
 397         splitPanel.addStyleName("pithos-splitPanel");
 398         splitPanel.setWidth(contentWidth);
 399         outer.add(splitPanel);
 400         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 401
 402         if (!bareContent) {
 403                 statusPanel = new StatusPanel();
 404                 statusPanel.setWidth("100%");
 405                 outer.add(statusPanel);
 406                 outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 407         }
 408         else
 409                 splitPanel.addStyleName("pithos-splitPanel-noframe");
 410
 411         // Hook the window resize event, so that we can adjust the UI.
 412         Window.addResizeHandler(this);
 413         // Clear out the window's built-in margin, because we want to take
 414         // advantage of the entire client area.
 415         Window.setMargin("0px");
 416         // Finally, add the outer panel to the RootPanel, so that it will be
 417         // displayed.
 418         RootPanel.get().add(outer);
 419         // Call the window resized handler to get the initial sizes setup. Doing
 420         // this in a deferred command causes it to occur after all widgets'
 421         // sizes have been computed by the browser.
 422         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 423
 424             @Override
 425             public void execute() {
 426                 onWindowResized(Window.getClientHeight());
 427             }
 428         });
 429
 430         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 431             @Override
 432             public void execute() {
 433                 fetchAccount(new Command() {
 434
 435                                         @Override
 436                                         public void execute() {
 437                                 if (!account.hasHomeContainer())
 438                                     createHomeContainer(account, this);
 439                                 else if (!account.hasTrashContainer())
 440                                         createTrashContainer(this);
 441                                 else {
 442                                         for (Folder f : account.getContainers())
 443                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 444                                                         trash = f;
 445                                                         break;
 446                                                 }
 447                                     folderTreeViewModel.initialize(account, new Command() {
 448
 449                                                                 @Override
 450                                                                 public void execute() {
 451                                                     createMySharedTree();
 452                                                                 }
 453                                                         });
 454                                     groupTreeViewModel.initialize();
 455                                     showStatistics();
 456                                 }
 457                                         }
 458                                 });
 459             }
 460         });
 461
 462 //        Scheduler.get().scheduleDeferred(new Command() {
 463 //
 464 //                      @Override
 465 //                      public void execute() {
 466 //                              displayError("lalala");
 467 //
 468 //                      }
 469 //              });
 470     }
 471
 472     public void applyPermissions(Folder f) {
 473         if (f != null) {
 474                 if (f.isInTrash())
 475                         upload.setEnabled(false);
 476                 else {
 477                         Boolean[] perms = f.getPermissions().get(username);
 478                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 479                                 upload.setEnabled(true);
 480                         }
 481                         else
 482                                 upload.setEnabled(false);
 483                 }
 484         }
 485         else
 486                 upload.setEnabled(false);
 487         }
 488
 489         @SuppressWarnings({ "rawtypes", "unchecked" })
 490         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 491         selectedTree = _selectedTree;
 492
 493         for (Composite c : treeViews)
 494                 if (c.equals(selectedTree))
 495                         c.addStyleName("cellTreeWidget-selectedTree");
 496                 else
 497                         c.removeStyleName("cellTreeWidget-selectedTree");
 498
 499         for (SingleSelectionModel s : selectionModels)
 500             if (!s.equals(model))
 501                 s.setSelected(s.getSelectedObject(), false);
 502     }
 503
 504     public void showFiles(final Folder f) {
 505         Set<File> files = f.getFiles();
 506         showFiles(files);
 507     }
 508
 509     public void showFiles(Set<File> files) {
 510         fileList.setFiles(new ArrayList<File>(files));
 511     }
 512
 513     /**
 514          * Parse and store the user credentials to the appropriate fields.
 515          */
 516         private boolean parseUserCredentials() {
 517         username = Window.Location.getParameter("user");
 518         token = Window.Location.getParameter("token");
 519         Configuration conf = (Configuration) GWT.create(Configuration.class);
 520         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 521             String cookie = conf.authCookie();
 522             String auth = Cookies.getCookie(cookie);
 523             if (auth == null) {
 524                 authenticateUser();
 525                 return false;
 526             }
 527             if (auth.startsWith("\""))
 528                 auth = auth.substring(1);
 529             if (auth.endsWith("\""))
 530                 auth = auth.substring(0, auth.length() - 1);
 531                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 532                         if (authSplit.length != 2) {
 533                             authenticateUser();
 534                             return false;
 535                         }
 536                         username = authSplit[0];
 537                         token = authSplit[1];
 538                         return true;
 539         }
 540
 541                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token, null, "", "/", false);
 542                 return true;
 543     }
 544
 545     /**
 546          * Redirect the user to the login page for authentication.
 547          */
 548         protected void authenticateUser() {
 549                 Dictionary otherProperties = Dictionary.getDictionary("otherProperties");
 550         Window.Location.assign(otherProperties.get("loginUrl"));
 551         }
 552
 553         protected void fetchAccount(final Command callback) {
 554         String path = "?format=json";
 555
 556         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 557             @Override
 558             public void onSuccess(AccountResource _result) {
 559                 account = _result;
 560                 if (callback != null)
 561                         callback.execute();
 562             }
 563
 564             @Override
 565             public void onError(Throwable t) {
 566                 GWT.log("Error getting account", t);
 567                                 setError(t);
 568                 if (t instanceof RestException)
 569                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 570                 else
 571                     displayError("System error fetching user data: " + t.getMessage());
 572             }
 573
 574                         @Override
 575                         protected void onUnauthorized(Response response) {
 576                                 sessionExpired();
 577                         }
 578         };
 579         getAccount.setHeader("X-Auth-Token", token);
 580         Scheduler.get().scheduleDeferred(getAccount);
 581     }
 582
 583     public void updateStatistics() {
 584         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 585
 586                         @Override
 587                         public void onSuccess(AccountResource _result) {
 588                                 showStatistics();
 589                         }
 590
 591                         @Override
 592                         public void onError(Throwable t) {
 593                 GWT.log("Error getting account", t);
 594                                 setError(t);
 595                 if (t instanceof RestException)
 596                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 597                 else
 598                     displayError("System error fetching user data: " + t.getMessage());
 599                         }
 600
 601                         @Override
 602                         protected void onUnauthorized(Response response) {
 603                                 sessionExpired();
 604                         }
 605                 };
 606                 headAccount.setHeader("X-Auth-Token", token);
 607                 Scheduler.get().scheduleDeferred(headAccount);
 608         }
 609
 610         protected void showStatistics() {
 611         usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
 612         totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
 613         NumberFormat nf = NumberFormat.getPercentFormat();
 614         usedPercent.setHTML(nf.format(account.getUsedPercentage()));
 615         }
 616
 617         protected void createHomeContainer(final AccountResource _account, final Command callback) {
 618         String path = "/" + Pithos.HOME_CONTAINER;
 619         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 620             @Override
 621             public void onSuccess(Resource result) {
 622                 if (!_account.hasTrashContainer())
 623                         createTrashContainer(callback);
 624                 else
 625                         fetchAccount(callback);
 626             }
 627
 628             @Override
 629             public void onError(Throwable t) {
 630                 GWT.log("Error creating pithos", t);
 631                                 setError(t);
 632                 if (t instanceof RestException)
 633                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 634                 else
 635                     displayError("System error Error creating pithos: " + t.getMessage());
 636             }
 637
 638                         @Override
 639                         protected void onUnauthorized(Response response) {
 640                                 sessionExpired();
 641                         }
 642         };
 643         createPithos.setHeader("X-Auth-Token", getToken());
 644         Scheduler.get().scheduleDeferred(createPithos);
 645     }
 646
 647     protected void createTrashContainer(final Command callback) {
 648         String path = "/" + Pithos.TRASH_CONTAINER;
 649         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 650             @Override
 651             public void onSuccess(Resource result) {
 652                         fetchAccount(callback);
 653             }
 654
 655             @Override
 656             public void onError(Throwable t) {
 657                 GWT.log("Error creating pithos", t);
 658                                 setError(t);
 659                 if (t instanceof RestException)
 660                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 661                 else
 662                     displayError("System error Error creating pithos: " + t.getMessage());
 663             }
 664
 665                         @Override
 666                         protected void onUnauthorized(Response response) {
 667                                 sessionExpired();
 668                         }
 669         };
 670         createPithos.setHeader("X-Auth-Token", getToken());
 671         Scheduler.get().scheduleDeferred(createPithos);
 672     }
 673
 674     /**
 675          * Creates an HTML fragment that places an image & caption together, for use
 676          * in a group header.
 677          *
 678          * @param imageProto an image prototype for an image
 679          * @param caption the group caption
 680          * @return the header HTML fragment
 681          */
 682         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 683                 String captionHTML = "<table class='caption' cellpadding='0' "
 684                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 685                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 686                 + caption + "</b></td></tr></table>";
 687                 return captionHTML;
 688         }
 689
 690         protected void onWindowResized(int height) {
 691                 // Adjust the split panel to take up the available room in the window.
 692                 int newHeight = height - splitPanel.getAbsoluteTop();
 693                 if (newHeight < 1)
 694                         newHeight = 1;
 695                 splitPanel.setHeight("" + newHeight);
 696                 inner.setHeight("" + newHeight);
 697         }
 698
 699         @Override
 700         public void onResize(ResizeEvent event) {
 701                 int height = event.getHeight();
 702                 onWindowResized(height);
 703         }
 704
 705         /**
 706          * Display an error message.
 707          *
 708          * @param msg the message to display
 709          */
 710         public void displayError(String msg) {
 711                 messagePanel.displayError(msg);
 712         }
 713
 714         /**
 715          * Display a warning message.
 716          *
 717          * @param msg the message to display
 718          */
 719         public void displayWarning(String msg) {
 720                 messagePanel.displayWarning(msg);
 721         }
 722
 723         /**
 724          * Display an informational message.
 725          *
 726          * @param msg the message to display
 727          */
 728         public void displayInformation(String msg) {
 729                 messagePanel.displayInformation(msg);
 730         }
 731
 732         /**
 733          * Retrieve the fileList.
 734          *
 735          * @return the fileList
 736          */
 737         public FileList getFileList() {
 738                 return fileList;
 739         }
 740
 741         /**
 742          * Retrieve the topPanel.
 743          *
 744          * @return the topPanel
 745          */
 746         TopPanel getTopPanel() {
 747                 return topPanel;
 748         }
 749
 750         /**
 751          * Retrieve the clipboard.
 752          *
 753          * @return the clipboard
 754          */
 755         public Clipboard getClipboard() {
 756                 return clipboard;
 757         }
 758
 759         public StatusPanel getStatusPanel() {
 760                 return statusPanel;
 761         }
 762
 763         public String getToken() {
 764                 return token;
 765         }
 766
 767         public static native void preventIESelection() /*-{
 768                 $doc.body.onselectstart = function () { return false; };
 769         }-*/;
 770
 771         public static native void enableIESelection() /*-{
 772                 if ($doc.body.onselectstart != null)
 773                 $doc.body.onselectstart = null;
 774         }-*/;
 775
 776         /**
 777          * @return the absolute path of the API root URL
 778          */
 779         public String getApiPath() {
 780                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 781                 return conf.apiPath();
 782         }
 783
 784         /**
 785          * History support for folder navigation
 786          * adds a new browser history entry
 787          *
 788          * @param key
 789          */
 790         public void updateHistory(String key){
 791 //              Replace any whitespace of the initial string to "+"
 792 //              String result = key.replaceAll("\\s","+");
 793 //              Add a new browser history entry.
 794 //              History.newItem(result);
 795                 History.newItem(key);
 796         }
 797
 798     public void deleteFolder(final Folder folder) {
 799         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(folder.getPrefix()) + "&t=" + System.currentTimeMillis();
 800         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 801         builder.setHeader("X-Auth-Token", getToken());
 802         try {
 803             builder.sendRequest("", new RequestCallback() {
 804                 @Override
 805                 public void onResponseReceived(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(Request request, Throwable exception) {
 818                         setError(exception);
 819                     displayError("System error unable to delete folder: " + exception.getMessage());
 820                 }
 821             });
 822         }
 823         catch (RequestException e) {
 824         }
 825     }
 826
 827     void deleteObject(final Folder folder, final int i, final JSONArray array) {
 828         if (i < array.size()) {
 829             JSONObject o = array.get(i).isObject();
 830             if (o != null && !o.containsKey("subdir")) {
 831                 JSONString name = o.get("name").isString();
 832                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 833                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), URL.encode(path)) {
 834                     @Override
 835                     public void onSuccess(Resource result) {
 836                         deleteObject(folder, i + 1, array);
 837                     }
 838
 839                     @Override
 840                     public void onError(Throwable t) {
 841                         GWT.log("", t);
 842                                                 setError(t);
 843                         displayError("System error unable to delete folder: " + t.getMessage());
 844                     }
 845
 846                                 @Override
 847                                 protected void onUnauthorized(Response response) {
 848                                         sessionExpired();
 849                                 }
 850                 };
 851                 delete.setHeader("X-Auth-Token", getToken());
 852                 Scheduler.get().scheduleDeferred(delete);
 853             }
 854             else if (o != null) {
 855                 String subdir = o.get("subdir").isString().stringValue();
 856                 subdir = subdir.substring(0, subdir.length() - 1);
 857                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(subdir) + "&t=" + System.currentTimeMillis();
 858                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 859                 builder.setHeader("X-Auth-Token", getToken());
 860                 try {
 861                     builder.sendRequest("", new RequestCallback() {
 862                         @Override
 863                         public void onResponseReceived(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(Request request, Throwable exception) {
 879                                 setError(exception);
 880                             displayError("System error unable to delete folder: " + exception.getMessage());
 881                         }
 882                     });
 883                 }
 884                 catch (RequestException e) {
 885                 }
 886             }
 887         }
 888         else {
 889             String path = folder.getUri();
 890             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), URL.encode(path)) {
 891                 @Override
 892                 public void onSuccess(Resource result) {
 893                     updateFolder(folder.getParent(), true, new Command() {
 894
 895                                                 @Override
 896                                                 public void execute() {
 897                                                         updateStatistics();
 898                                                 }
 899                                         });
 900                 }
 901
 902                 @Override
 903                 public void onError(Throwable t) {
 904                     GWT.log("", t);
 905                                         setError(t);
 906                     if (t instanceof RestException) {
 907                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 908                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 909                         else
 910                                 onSuccess(null);
 911                     }
 912                     else
 913                         displayError("System error unable to delete folder: " + t.getMessage());
 914                 }
 915
 916                                 @Override
 917                                 protected void onUnauthorized(Response response) {
 918                                         sessionExpired();
 919                                 }
 920             };
 921             deleteFolder.setHeader("X-Auth-Token", getToken());
 922             Scheduler.get().scheduleDeferred(deleteFolder);
 923         }
 924     }
 925
 926     public FolderTreeView getFolderTreeView() {
 927         return folderTreeView;
 928     }
 929
 930     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 931         if (iter.hasNext()) {
 932             File file = iter.next();
 933             String path = targetUri + "/" + file.getName();
 934             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 935                 @Override
 936                 public void onSuccess(Resource result) {
 937                     copyFiles(iter, targetUsername, targetUri, callback);
 938                 }
 939
 940                 @Override
 941                 public void onError(Throwable t) {
 942                     GWT.log("", t);
 943                                         setError(t);
 944                     if (t instanceof RestException) {
 945                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 946                     }
 947                     else
 948                         displayError("System error unable to copy file: "+t.getMessage());
 949                 }
 950
 951                                 @Override
 952                                 protected void onUnauthorized(Response response) {
 953                                         sessionExpired();
 954                                 }
 955             };
 956             copyFile.setHeader("X-Auth-Token", getToken());
 957             copyFile.setHeader("X-Copy-From", URL.encodePathSegment(file.getUri()));
 958             if (!file.getOwner().equals(targetUsername))
 959                 copyFile.setHeader("X-Source-Account", URL.encodePathSegment(file.getOwner()));
 960             copyFile.setHeader("Content-Type", file.getContentType());
 961             Scheduler.get().scheduleDeferred(copyFile);
 962         }
 963         else  if (callback != null) {
 964             callback.execute();
 965         }
 966     }
 967
 968     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
 969         if (iter.hasNext()) {
 970             final Folder f = iter.next();
 971             copyFolder(f, targetUsername, targetUri, new Command() {
 972
 973                                 @Override
 974                                 public void execute() {
 975                                         copySubfolders(iter, targetUsername, targetUri, callback);
 976                                 }
 977                         });
 978         }
 979         else  if (callback != null) {
 980             callback.execute();
 981         }
 982     }
 983
 984     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
 985         String path = targetUri + "/" + f.getName();
 986         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
 987             @Override
 988             public void onSuccess(Resource result) {
 989                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix()), f) {
 990
 991                                         @Override
 992                                         public void onSuccess(final Folder _f) {
 993                                 Iterator<File> iter = _f.getFiles().iterator();
 994                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
 995                                     @Override
 996                                     public void execute() {
 997                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
 998                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
 999                                     }
1000                                 });
1001                                         }
1002
1003                                         @Override
1004                                         public void onError(Throwable t) {
1005                                 GWT.log("", t);
1006                                                 setError(t);
1007                                 if (t instanceof RestException) {
1008                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
1009                                 }
1010                                 else
1011                                     displayError("System error getting folder: " + t.getMessage());
1012                                         }
1013
1014                                         @Override
1015                                         protected void onUnauthorized(Response response) {
1016                                                 sessionExpired();
1017                                         }
1018                                 };
1019                                 getFolder.setHeader("X-Auth-Token", getToken());
1020                                 Scheduler.get().scheduleDeferred(getFolder);
1021             }
1022
1023             @Override
1024             public void onError(Throwable t) {
1025                 GWT.log("", t);
1026                                 setError(t);
1027                if (t instanceof RestException) {
1028                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
1029                 }
1030                 else
1031                     displayError("System error creating folder: " + t.getMessage());
1032             }
1033
1034                         @Override
1035                         protected void onUnauthorized(Response response) {
1036                                 sessionExpired();
1037                         }
1038         };
1039         createFolder.setHeader("X-Auth-Token", getToken());
1040         createFolder.setHeader("Accept", "*/*");
1041         createFolder.setHeader("Content-Length", "0");
1042         createFolder.setHeader("Content-Type", "application/folder");
1043         Scheduler.get().scheduleDeferred(createFolder);
1044     }
1045
1046     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1047         selectionModels.add(model);
1048     }
1049
1050         public OtherSharedTreeView getOtherSharedTreeView() {
1051                 return otherSharedTreeView;
1052         }
1053
1054         public void updateTrash(boolean showFiles, Command callback) {
1055                 updateFolder(trash, showFiles, callback);
1056         }
1057
1058         public void updateGroupsNode() {
1059                 groupTreeView.updateGroupNode(null);
1060         }
1061
1062         public void addGroup(String groupname) {
1063                 Group newGroup = new Group(groupname);
1064                 account.addGroup(newGroup);
1065                 groupTreeView.updateGroupNode(null);
1066         }
1067
1068         public void removeGroup(Group group) {
1069                 account.removeGroup(group);
1070                 updateGroupsNode();
1071         }
1072
1073         public TreeView getSelectedTree() {
1074                 return selectedTree;
1075         }
1076
1077         public Folder getSelection() {
1078                 return selectedTree.getSelection();
1079         }
1080
1081         public void showFolderStatistics(int folderFileCount) {
1082                 numOfFiles.setHTML(String.valueOf(folderFileCount));
1083         }
1084
1085         public GroupTreeView getGroupTreeView() {
1086                 return groupTreeView;
1087         }
1088
1089         public void sessionExpired() {
1090                 new SessionExpiredDialog(this).center();
1091         }
1092
1093         public void updateRootFolder(Command callback) {
1094                 updateFolder(account.getPithos(), false, callback);
1095         }
1096
1097         void createMySharedTree() {
1098                 mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1099                 mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1100                     @Override
1101                     public void onSelectionChange(SelectionChangeEvent event) {
1102                         if (mysharedTreeSelectionModel.getSelectedObject() != null) {
1103                             deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1104                             upload.setEnabled(false);
1105                             updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1106                         }
1107                         showRelevantToolbarButtons();
1108                     }
1109                 });
1110                 selectionModels.add(mysharedTreeSelectionModel);
1111                 mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1112                 mysharedTreeViewModel.initialize(new Command() {
1113
1114                         @Override
1115                         public void execute() {
1116                             mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1117                                 trees.insert(mysharedTreeView, 2);
1118                                 treeViews.add(mysharedTreeView);
1119                                 createOtherSharedTree();
1120                         }
1121                 });
1122         }
1123
1124         void createOtherSharedTree() {
1125                 otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1126                 otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1127                     @Override
1128                     public void onSelectionChange(SelectionChangeEvent event) {
1129                         if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
1130                             deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1131                             otherSharedTreeView.addStyleName("cellTreeWidget-selectedTree");
1132                             applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1133                             updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
1134                         }
1135                         showRelevantToolbarButtons();
1136                     }
1137                 });
1138                 selectionModels.add(otherSharedTreeSelectionModel);
1139                 otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1140                 otherSharedTreeViewModel.initialize(new Command() {
1141
1142                         @Override
1143                         public void execute() {
1144                             otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1145                                 trees.insert(otherSharedTreeView, 3);
1146                                 treeViews.add(otherSharedTreeView);
1147                         }
1148                 });
1149         }
1150
1151         public native void log1(String message)/*-{
1152                 $wnd.console.log(message);
1153         }-*/;
1154
1155         public String getErrorData() {
1156                 if (error != null)
1157                         return error.toString();
1158                 return "";
1159         }
1160
1161         public void setError(Throwable t) {
1162                 error = t;
1163         }
1164
1165         public void showRelevantToolbarButtons() {
1166                 toolbar.showRelevantButtons();
1167         }
1168
1169         public FileUploadDialog getFileUploadDialog() {
1170                 if (fileUploadDialog == null)
1171                         fileUploadDialog = new FileUploadDialog(this);
1172                 return fileUploadDialog;
1173         }
1174
1175         public void hideUploadIndicator() {
1176                 upload.removeStyleName("pithos-uploadButton-loading");
1177                 upload.setTitle("");
1178         }
1179
1180         public void showUploadIndicator() {
1181                 upload.addStyleName("pithos-uploadButton-loading");
1182                 upload.setTitle("Upload in progress. Click for details.");
1183         }
1184
1185         public void scheduleFolderHeadCommand(final Folder folder, final Command callback) {
1186                 HeadRequest<Folder> headFolder = new HeadRequest<Folder>(Folder.class, getApiPath(), folder.getOwner(), folder.getUri(), folder) {
1187
1188                         @Override
1189                         public void onSuccess(Folder _result) {
1190                                 if (callback != null)
1191                                         callback.execute();
1192                         }
1193
1194                         @Override
1195                         public void onError(Throwable t) {
1196                         if (t instanceof RestException) {
1197                                 if (((RestException) t).getHttpStatusCode() == Response.SC_NOT_FOUND) {
1198                         final String path = folder.getUri();
1199                         PutRequest newFolder = new PutRequest(getApiPath(), folder.getOwner(), path) {
1200                             @Override
1201                             public void onSuccess(Resource _result) {
1202                                 scheduleFolderHeadCommand(folder, callback);
1203                             }
1204
1205                             @Override
1206                             public void onError(Throwable _t) {
1207                                 GWT.log("", _t);
1208                                                         setError(_t);
1209                                 if(_t instanceof RestException){
1210                                     displayError("Unable to create folder: " + ((RestException) _t).getHttpStatusText());
1211                                 }
1212                                 else
1213                                     displayError("System error creating folder: " + _t.getMessage());
1214                             }
1215
1216                                         @Override
1217                                         protected void onUnauthorized(Response response) {
1218                                                 sessionExpired();
1219                                         }
1220                         };
1221                         newFolder.setHeader("X-Auth-Token", getToken());
1222                         newFolder.setHeader("Content-Type", "application/folder");
1223                         newFolder.setHeader("Accept", "*/*");
1224                         newFolder.setHeader("Content-Length", "0");
1225                         Scheduler.get().scheduleDeferred(newFolder);
1226                                 }
1227                                 else
1228                                         displayError("Error heading folder: " + ((RestException) t).getHttpStatusText());
1229                         }
1230                         else
1231                             displayError("System error heading folder: " + t.getMessage());
1232
1233                         GWT.log("Error heading folder", t);
1234                                 setError(t);
1235                         }
1236
1237                         @Override
1238                         protected void onUnauthorized(Response response) {
1239                                 sessionExpired();
1240                         }
1241                 };
1242                 headFolder.setHeader("X-Auth-Token", getToken());
1243                 Scheduler.get().scheduleDeferred(headFolder);
1244         }
1245
1246         public void scheduleFileHeadCommand(File f, final Command callback) {
1247                 HeadRequest<File> headFile = new HeadRequest<File>(File.class, getApiPath(), f.getOwner(), f.getUri(), f) {
1248
1249                         @Override
1250                         public void onSuccess(File _result) {
1251                                 if (callback != null)
1252                                         callback.execute();
1253                         }
1254
1255                         @Override
1256                         public void onError(Throwable t) {
1257                         GWT.log("Error heading file", t);
1258                                 setError(t);
1259                         if (t instanceof RestException)
1260                             displayError("Error heading file: " + ((RestException) t).getHttpStatusText());
1261                         else
1262                             displayError("System error heading file: " + t.getMessage());
1263                         }
1264
1265                         @Override
1266                         protected void onUnauthorized(Response response) {
1267                                 sessionExpired();
1268                         }
1269                 };
1270                 headFile.setHeader("X-Auth-Token", getToken());
1271                 Scheduler.get().scheduleDeferred(headFile);
1272         }
1273 }