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.http.client.URL;
  80 import com.google.gwt.json.client.JSONArray;
  81 import com.google.gwt.json.client.JSONObject;
  82 import com.google.gwt.json.client.JSONParser;
  83 import com.google.gwt.json.client.JSONString;
  84 import com.google.gwt.json.client.JSONValue;
  85 import com.google.gwt.resources.client.ImageResource;
  86 import com.google.gwt.user.client.Command;
  87 import com.google.gwt.user.client.Cookies;
  88 import com.google.gwt.user.client.Event;
  89 import com.google.gwt.user.client.History;
  90 import com.google.gwt.user.client.Window;
  91 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  92 import com.google.gwt.user.client.ui.Button;
  93 import com.google.gwt.user.client.ui.HTML;
  94 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  95 import com.google.gwt.user.client.ui.HasVerticalAlignment;
  96 import com.google.gwt.user.client.ui.HorizontalPanel;
  97 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
  98 import com.google.gwt.user.client.ui.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 List<Tag> getAllTags() {
 148         List<Tag> tagList = new ArrayList<Tag>();
 149         for (Folder f : account.getContainers()) {
 150             for (String t : f.getTags()) {
 151                 tagList.add(new Tag(t));
 152             }
 153         }
 154         return tagList;
 155     }
 156
 157     public MysharedTreeView getMySharedTreeView() {
 158         return mysharedTreeView;
 159     }
 160
 161     /**
 162          * An aggregate image bundle that pulls together all the images for this
 163          * application into a single bundle.
 164          */
 165         public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 166
 167                 @Source("gr/grnet/pithos/resources/document.png")
 168                 ImageResource folders();
 169
 170                 @Source("gr/grnet/pithos/resources/advancedsettings.png")
 171                 ImageResource tools();
 172         }
 173
 174         /**
 175          * The Application Clipboard implementation;
 176          */
 177         private Clipboard clipboard = new Clipboard();
 178
 179         /**
 180          * The top panel that contains the menu bar.
 181          */
 182         private TopPanel topPanel;
 183
 184         /**
 185          * The panel that contains the various system messages.
 186          */
 187         private MessagePanel messagePanel = new MessagePanel(Pithos.images);
 188
 189         /**
 190          * The bottom panel that contains the status bar.
 191          */
 192         private StatusPanel statusPanel = null;
 193
 194         /**
 195          * The file list widget.
 196          */
 197         private FileList fileList;
 198
 199         /**
 200          * The tab panel that occupies the right side of the screen.
 201          */
 202         private VerticalPanel inner = new VerticalPanel();
 203
 204
 205         /**
 206          * The split panel that will contain the left and right panels.
 207          */
 208         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 209
 210         /**
 211          * The currently selected item in the application, for use by the Edit menu
 212          * commands. Potential types are Folder, File, User and Group.
 213          */
 214         private Object currentSelection;
 215
 216         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 217
 218     private String username = null;
 219
 220     /**
 221      * The authentication token of the current user.
 222      */
 223     private String token;
 224
 225     VerticalPanel trees;
 226
 227     SingleSelectionModel<Folder> folderTreeSelectionModel;
 228     FolderTreeViewModel folderTreeViewModel;
 229     FolderTreeView folderTreeView;
 230
 231     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 232     MysharedTreeViewModel mysharedTreeViewModel;
 233     MysharedTreeView mysharedTreeView = null;;
 234
 235     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 236     OtherSharedTreeViewModel otherSharedTreeViewModel;
 237     OtherSharedTreeView otherSharedTreeView = null;
 238
 239     GroupTreeViewModel groupTreeViewModel;
 240     private GroupTreeView groupTreeView;
 241
 242     private TreeView selectedTree;
 243     protected AccountResource account;
 244
 245     Folder trash;
 246
 247     @SuppressWarnings("rawtypes") List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 248
 249     Button upload;
 250
 251     private HTML totalFiles;
 252
 253     private HTML usedBytes;
 254
 255     private HTML totalBytes;
 256
 257     private HTML usedPercent;
 258
 259     private HTML numOfFiles;
 260
 261     private Button toolsButton;
 262
 263         @Override
 264         public void onModuleLoad() {
 265                 if (parseUserCredentials())
 266             initialize();
 267         }
 268
 269     private void initialize() {
 270         VerticalPanel outer = new VerticalPanel();
 271         outer.setWidth("100%");
 272
 273         topPanel = new TopPanel(this, Pithos.images);
 274         topPanel.setWidth("100%");
 275         outer.add(topPanel);
 276
 277         messagePanel.setWidth("100%");
 278         messagePanel.setVisible(false);
 279         outer.add(messagePanel);
 280         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 281
 282
 283         // Inner contains the various lists.
 284         inner.sinkEvents(Event.ONCONTEXTMENU);
 285         inner.setWidth("100%");
 286
 287         HorizontalPanel rightside = new HorizontalPanel();
 288         rightside.addStyleName("pithos-rightSide");
 289         rightside.setSpacing(5);
 290
 291         toolsButton = new Button(AbstractImagePrototype.create(images.tools()).getHTML());
 292         toolsButton.addClickHandler(new ClickHandler() {
 293
 294                         @Override
 295                         public void onClick(ClickEvent event) {
 296                 ToolsMenu menu = new ToolsMenu(Pithos.this, images, getSelectedTree(), getSelectedTree().getSelection(), getFileList().getSelectedFiles());
 297                 if (!menu.isEmpty()) {
 298                             menu.setPopupPosition(event.getClientX(), event.getClientY());
 299                             menu.show();
 300                 }
 301                         }
 302                 });
 303         rightside.add(toolsButton);
 304         rightside.setCellHorizontalAlignment(toolsButton, HasHorizontalAlignment.ALIGN_LEFT);
 305
 306         HorizontalPanel folderStatistics = new HorizontalPanel();
 307         folderStatistics.addStyleName("pithos-folderStatistics");
 308         numOfFiles = new HTML();
 309         folderStatistics.add(numOfFiles);
 310         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 311         folderStatistics.add(numOfFilesLabel);
 312         rightside.add(folderStatistics);
 313         rightside.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 314
 315         inner.add(rightside);
 316         inner.setCellVerticalAlignment(rightside, HasVerticalAlignment.ALIGN_MIDDLE);
 317         inner.setCellHeight(rightside, "60px");
 318
 319         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 320         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 321             @Override
 322             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 323                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 324                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 325                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 326                     Folder f = folderTreeSelectionModel.getSelectedObject();
 327                     updateFolder(f, true, null);
 328                 }
 329             }
 330         });
 331         selectionModels.add(folderTreeSelectionModel);
 332
 333         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 334         folderTreeView = new FolderTreeView(folderTreeViewModel);
 335
 336         fileList = new FileList(this, images, folderTreeView);
 337         inner.add(fileList);
 338
 339         groupTreeViewModel = new GroupTreeViewModel(this);
 340         groupTreeView = new GroupTreeView(groupTreeViewModel);
 341
 342         trees = new VerticalPanel();
 343
 344         upload = new Button("Upload File", new ClickHandler() {
 345             @Override
 346             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 347                 new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 348             }
 349         });
 350         upload.addStyleName("pithos-uploadButton");
 351         trees.add(upload);
 352
 353         HorizontalPanel treeHeader = new HorizontalPanel();
 354         treeHeader.addStyleName("pithos-treeHeader");
 355         HorizontalPanel statistics = new HorizontalPanel();
 356         statistics.add(new HTML("Total Objects:&nbsp;"));
 357         totalFiles = new HTML();
 358         statistics.add(totalFiles);
 359         statistics.add(new HTML("&nbsp;|&nbsp;Used:&nbsp;"));
 360         usedBytes = new HTML();
 361         statistics.add(usedBytes);
 362         statistics.add(new HTML("&nbsp;of&nbsp;"));
 363         totalBytes = new HTML();
 364         statistics.add(totalBytes);
 365         statistics.add(new HTML("&nbsp;("));
 366         usedPercent = new HTML();
 367         statistics.add(usedPercent);
 368         statistics.add(new HTML("%)"));
 369         treeHeader.add(statistics);
 370         trees.add(treeHeader);
 371
 372         trees.add(folderTreeView);
 373         trees.add(groupTreeView);
 374         // Add the left and right panels to the split panel.
 375         splitPanel.setLeftWidget(trees);
 376         splitPanel.setRightWidget(inner);
 377         splitPanel.setSplitPosition("25%");
 378         splitPanel.setSize("100%", "100%");
 379         splitPanel.addStyleName("pithos-splitPanel");
 380         outer.add(splitPanel);
 381
 382         statusPanel = new StatusPanel();
 383         outer.add(statusPanel);
 384
 385
 386         // Hook the window resize event, so that we can adjust the UI.
 387         Window.addResizeHandler(this);
 388         // Clear out the window's built-in margin, because we want to take
 389         // advantage of the entire client area.
 390         Window.setMargin("0px");
 391         // Finally, add the outer panel to the RootPanel, so that it will be
 392         // displayed.
 393         RootPanel.get().add(outer);
 394         // Call the window resized handler to get the initial sizes setup. Doing
 395         // this in a deferred command causes it to occur after all widgets'
 396         // sizes have been computed by the browser.
 397         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 398
 399             @Override
 400             public void execute() {
 401                 onWindowResized(Window.getClientHeight());
 402             }
 403         });
 404
 405         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 406             @Override
 407             public void execute() {
 408                 fetchAccount(new Command() {
 409
 410                                         @Override
 411                                         public void execute() {
 412                                 if (!account.hasHomeContainer())
 413                                     createHomeContainer(account, this);
 414                                 else if (!account.hasTrashContainer())
 415                                         createTrashContainer(this);
 416                                 else {
 417                                         for (Folder f : account.getContainers())
 418                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 419                                                         trash = f;
 420                                                         break;
 421                                                 }
 422                                     folderTreeViewModel.initialize(account);
 423                                     groupTreeViewModel.initialize();
 424                                     createMySharedTree();
 425                                     showStatistics();
 426                                 }
 427                                         }
 428                                 });
 429             }
 430         });
 431     }
 432
 433     public void applyPermissions(Folder f) {
 434         if (f != null) {
 435                 if (f.isInTrash())
 436                         upload.setEnabled(false);
 437                 else {
 438                         Boolean[] perms = f.getPermissions().get(username);
 439                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 440                                 upload.setEnabled(true);
 441                         }
 442                         else
 443                                 upload.setEnabled(false);
 444                 }
 445         }
 446         else
 447                 upload.setEnabled(false);
 448         }
 449
 450         @SuppressWarnings({ "rawtypes", "unchecked" })
 451         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 452         selectedTree = _selectedTree;
 453         for (SingleSelectionModel s : selectionModels)
 454             if (!s.equals(model))
 455                 s.setSelected(s.getSelectedObject(), false);
 456     }
 457
 458     public void showFiles(Folder f) {
 459         Set<File> files = f.getFiles();
 460         showFiles(files);
 461     }
 462
 463     public void showFiles(Set<File> files) {
 464         //Iterator<File> iter = files.iterator();
 465         //fetchFile(iter, files);
 466         fileList.setFiles(new ArrayList<File>(files));
 467     }
 468
 469     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 470         if (iter.hasNext()) {
 471             File file = iter.next();
 472             String path = file.getUri() + "?format=json";
 473             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 474                 @Override
 475                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 476                     fetchFile(iter, files);
 477                 }
 478
 479                 @Override
 480                 public void onError(Throwable t) {
 481                     GWT.log("Error getting file", t);
 482                     if (t instanceof RestException)
 483                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 484                     else
 485                         displayError("System error fetching file: " + t.getMessage());
 486                 }
 487
 488                                 @Override
 489                                 protected void onUnauthorized(Response response) {
 490                                         sessionExpired();
 491                                 }
 492             };
 493             getFile.setHeader("X-Auth-Token", "0000");
 494             Scheduler.get().scheduleDeferred(getFile);
 495         }
 496         else
 497             fileList.setFiles(new ArrayList<File>(files));
 498     }
 499
 500     /**
 501          * Parse and store the user credentials to the appropriate fields.
 502          */
 503         private boolean parseUserCredentials() {
 504         username = Window.Location.getParameter("user");
 505         token = Window.Location.getParameter("token");
 506         Configuration conf = (Configuration) GWT.create(Configuration.class);
 507         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 508             String cookie = conf.authCookie();
 509             String auth = Cookies.getCookie(cookie);
 510             if (auth == null) {
 511                 authenticateUser();
 512                 return false;
 513             }
 514                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 515                         if (authSplit.length != 2) {
 516                             authenticateUser();
 517                             return false;
 518                         }
 519                         username = authSplit[0];
 520                         token = authSplit[1];
 521                         return true;
 522         }
 523                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
 524                 return true;
 525     }
 526
 527     /**
 528          * Redirect the user to the login page for authentication.
 529          */
 530         protected void authenticateUser() {
 531                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 532         Window.Location.assign(conf.loginUrl() + "?next=" + Window.Location.getHref());
 533         }
 534
 535         protected void fetchAccount(final Command callback) {
 536         String path = "?format=json";
 537
 538         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 539             @Override
 540             public void onSuccess(AccountResource _result) {
 541                 account = _result;
 542                 if (callback != null)
 543                         callback.execute();
 544             }
 545
 546             @Override
 547             public void onError(Throwable t) {
 548                 GWT.log("Error getting account", t);
 549                 if (t instanceof RestException)
 550                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 551                 else
 552                     displayError("System error fetching user data: " + t.getMessage());
 553             }
 554
 555                         @Override
 556                         protected void onUnauthorized(Response response) {
 557                                 sessionExpired();
 558                         }
 559         };
 560         getAccount.setHeader("X-Auth-Token", token);
 561         Scheduler.get().scheduleDeferred(getAccount);
 562     }
 563
 564     public void updateStatistics() {
 565         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 566
 567                         @Override
 568                         public void onSuccess(@SuppressWarnings("unused") AccountResource _result) {
 569                                 showStatistics();
 570                         }
 571
 572                         @Override
 573                         public void onError(Throwable t) {
 574                 GWT.log("Error getting account", t);
 575                 if (t instanceof RestException)
 576                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 577                 else
 578                     displayError("System error fetching user data: " + t.getMessage());
 579                         }
 580
 581                         @Override
 582                         protected void onUnauthorized(Response response) {
 583                                 sessionExpired();
 584                         }
 585                 };
 586                 headAccount.setHeader("X-Auth-Token", token);
 587                 Scheduler.get().scheduleDeferred(headAccount);
 588         }
 589
 590         protected void showStatistics() {
 591         totalFiles.setHTML(String.valueOf(account.getNumberOfObjects()));
 592         usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
 593         totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
 594         usedPercent.setHTML(String.valueOf(account.getUsedPercentage()));
 595         }
 596
 597         protected void createHomeContainer(final AccountResource _account, final Command callback) {
 598         String path = "/" + Pithos.HOME_CONTAINER;
 599         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 600             @Override
 601             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 602                 if (!_account.hasTrashContainer())
 603                         createTrashContainer(callback);
 604                 else
 605                         fetchAccount(callback);
 606             }
 607
 608             @Override
 609             public void onError(Throwable t) {
 610                 GWT.log("Error creating pithos", t);
 611                 if (t instanceof RestException)
 612                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 613                 else
 614                     displayError("System error Error creating pithos: " + t.getMessage());
 615             }
 616
 617                         @Override
 618                         protected void onUnauthorized(Response response) {
 619                                 sessionExpired();
 620                         }
 621         };
 622         createPithos.setHeader("X-Auth-Token", getToken());
 623         Scheduler.get().scheduleDeferred(createPithos);
 624     }
 625
 626     protected void createTrashContainer(final Command callback) {
 627         String path = "/" + Pithos.TRASH_CONTAINER;
 628         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 629             @Override
 630             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 631                         fetchAccount(callback);
 632             }
 633
 634             @Override
 635             public void onError(Throwable t) {
 636                 GWT.log("Error creating pithos", t);
 637                 if (t instanceof RestException)
 638                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 639                 else
 640                     displayError("System error Error creating pithos: " + t.getMessage());
 641             }
 642
 643                         @Override
 644                         protected void onUnauthorized(Response response) {
 645                                 sessionExpired();
 646                         }
 647         };
 648         createPithos.setHeader("X-Auth-Token", getToken());
 649         Scheduler.get().scheduleDeferred(createPithos);
 650     }
 651
 652     /**
 653          * Creates an HTML fragment that places an image & caption together, for use
 654          * in a group header.
 655          *
 656          * @param imageProto an image prototype for an image
 657          * @param caption the group caption
 658          * @return the header HTML fragment
 659          */
 660         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 661                 String captionHTML = "<table class='caption' cellpadding='0' "
 662                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 663                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 664                 + caption + "</b></td></tr></table>";
 665                 return captionHTML;
 666         }
 667
 668         protected void onWindowResized(int height) {
 669                 // Adjust the split panel to take up the available room in the window.
 670                 int newHeight = height - splitPanel.getAbsoluteTop() - 60;
 671                 if (newHeight < 1)
 672                         newHeight = 1;
 673                 splitPanel.setHeight("" + newHeight);
 674                 inner.setHeight("" + newHeight);
 675         }
 676
 677         @Override
 678         public void onResize(ResizeEvent event) {
 679                 int height = event.getHeight();
 680                 onWindowResized(height);
 681         }
 682
 683         /**
 684          * Display an error message.
 685          *
 686          * @param msg the message to display
 687          */
 688         public void displayError(String msg) {
 689                 messagePanel.displayError(msg);
 690         }
 691
 692         /**
 693          * Display a warning message.
 694          *
 695          * @param msg the message to display
 696          */
 697         public void displayWarning(String msg) {
 698                 messagePanel.displayWarning(msg);
 699         }
 700
 701         /**
 702          * Display an informational message.
 703          *
 704          * @param msg the message to display
 705          */
 706         public void displayInformation(String msg) {
 707                 messagePanel.displayInformation(msg);
 708         }
 709
 710         /**
 711          * Retrieve the fileList.
 712          *
 713          * @return the fileList
 714          */
 715         public FileList getFileList() {
 716                 return fileList;
 717         }
 718
 719         /**
 720          * Retrieve the topPanel.
 721          *
 722          * @return the topPanel
 723          */
 724         TopPanel getTopPanel() {
 725                 return topPanel;
 726         }
 727
 728         /**
 729          * Retrieve the clipboard.
 730          *
 731          * @return the clipboard
 732          */
 733         public Clipboard getClipboard() {
 734                 return clipboard;
 735         }
 736
 737         public StatusPanel getStatusPanel() {
 738                 return statusPanel;
 739         }
 740
 741         public String getToken() {
 742                 return token;
 743         }
 744
 745         public static native void preventIESelection() /*-{
 746                 $doc.body.onselectstart = function () { return false; };
 747         }-*/;
 748
 749         public static native void enableIESelection() /*-{
 750                 if ($doc.body.onselectstart != null)
 751                 $doc.body.onselectstart = null;
 752         }-*/;
 753
 754         /**
 755          * @return the absolute path of the API root URL
 756          */
 757         public String getApiPath() {
 758                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 759                 return conf.apiPath();
 760         }
 761
 762         /**
 763          * History support for folder navigation
 764          * adds a new browser history entry
 765          *
 766          * @param key
 767          */
 768         public void updateHistory(String key){
 769 //              Replace any whitespace of the initial string to "+"
 770 //              String result = key.replaceAll("\\s","+");
 771 //              Add a new browser history entry.
 772 //              History.newItem(result);
 773                 History.newItem(key);
 774         }
 775
 776     public void deleteFolder(final Folder folder) {
 777         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(folder.getPrefix()) + "&t=" + System.currentTimeMillis();
 778         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 779         builder.setHeader("X-Auth-Token", getToken());
 780         try {
 781             builder.sendRequest("", new RequestCallback() {
 782                 @Override
 783                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 784                     if (response.getStatusCode() == Response.SC_OK) {
 785                         JSONValue json = JSONParser.parseStrict(response.getText());
 786                         JSONArray array = json.isArray();
 787                         int i = 0;
 788                         if (array != null) {
 789                             deleteObject(folder, i, array);
 790                         }
 791                     }
 792                 }
 793
 794                 @Override
 795                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 796                     displayError("System error unable to delete folder: " + exception.getMessage());
 797                 }
 798             });
 799         }
 800         catch (RequestException e) {
 801         }
 802     }
 803
 804     void deleteObject(final Folder folder, final int i, final JSONArray array) {
 805         if (i < array.size()) {
 806             JSONObject o = array.get(i).isObject();
 807             if (o != null && !o.containsKey("subdir")) {
 808                 JSONString name = o.get("name").isString();
 809                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 810                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
 811                     @Override
 812                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 813                         deleteObject(folder, i + 1, array);
 814                     }
 815
 816                     @Override
 817                     public void onError(Throwable t) {
 818                         GWT.log("", t);
 819                         displayError("System error unable to delete folder: " + t.getMessage());
 820                     }
 821
 822                                 @Override
 823                                 protected void onUnauthorized(Response response) {
 824                                         sessionExpired();
 825                                 }
 826                 };
 827                 delete.setHeader("X-Auth-Token", getToken());
 828                 Scheduler.get().scheduleDeferred(delete);
 829             }
 830             else if (o != null) {
 831                 String subdir = o.get("subdir").isString().stringValue();
 832                 subdir = subdir.substring(0, subdir.length() - 1);
 833                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(subdir) + "&t=" + System.currentTimeMillis();
 834                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 835                 builder.setHeader("X-Auth-Token", getToken());
 836                 try {
 837                     builder.sendRequest("", new RequestCallback() {
 838                         @Override
 839                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 840                             if (response.getStatusCode() == Response.SC_OK) {
 841                                 JSONValue json = JSONParser.parseStrict(response.getText());
 842                                 JSONArray array2 = json.isArray();
 843                                 if (array2 != null) {
 844                                     int l = array.size();
 845                                     for (int j=0; j<array2.size(); j++) {
 846                                         array.set(l++, array2.get(j));
 847                                     }
 848                                 }
 849                                 deleteObject(folder, i + 1, array);
 850                             }
 851                         }
 852
 853                         @Override
 854                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 855                             displayError("System error unable to delete folder: " + exception.getMessage());
 856                         }
 857                     });
 858                 }
 859                 catch (RequestException e) {
 860                 }
 861             }
 862         }
 863         else {
 864             String path = folder.getUri();
 865             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 866                 @Override
 867                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 868                     updateFolder(folder.getParent(), true, new Command() {
 869
 870                                                 @Override
 871                                                 public void execute() {
 872                                                         updateStatistics();
 873                                                 }
 874                                         });
 875                 }
 876
 877                 @Override
 878                 public void onError(Throwable t) {
 879                     GWT.log("", t);
 880                     if (t instanceof RestException) {
 881                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 882                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 883                         else
 884                                 onSuccess(null);
 885                     }
 886                     else
 887                         displayError("System error unable to delete folder: " + t.getMessage());
 888                 }
 889
 890                                 @Override
 891                                 protected void onUnauthorized(Response response) {
 892                                         sessionExpired();
 893                                 }
 894             };
 895             deleteFolder.setHeader("X-Auth-Token", getToken());
 896             Scheduler.get().scheduleDeferred(deleteFolder);
 897         }
 898     }
 899
 900     public FolderTreeView getFolderTreeView() {
 901         return folderTreeView;
 902     }
 903
 904     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 905         if (iter.hasNext()) {
 906             File file = iter.next();
 907             String path = targetUri + "/" + file.getName();
 908             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 909                 @Override
 910                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 911                     copyFiles(iter, targetUsername, targetUri, callback);
 912                 }
 913
 914                 @Override
 915                 public void onError(Throwable t) {
 916                     GWT.log("", t);
 917                     if (t instanceof RestException) {
 918                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 919                     }
 920                     else
 921                         displayError("System error unable to copy file: "+t.getMessage());
 922                 }
 923
 924                                 @Override
 925                                 protected void onUnauthorized(Response response) {
 926                                         sessionExpired();
 927                                 }
 928             };
 929             copyFile.setHeader("X-Auth-Token", getToken());
 930             copyFile.setHeader("X-Copy-From", file.getUri());
 931             Scheduler.get().scheduleDeferred(copyFile);
 932         }
 933         else  if (callback != null) {
 934             callback.execute();
 935         }
 936     }
 937
 938     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
 939         if (iter.hasNext()) {
 940             final Folder f = iter.next();
 941             copyFolder(f, targetUsername, targetUri, new Command() {
 942
 943                                 @Override
 944                                 public void execute() {
 945                                         copySubfolders(iter, targetUsername, targetUri, callback);
 946                                 }
 947                         });
 948         }
 949         else  if (callback != null) {
 950             callback.execute();
 951         }
 952     }
 953
 954     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
 955         String path = targetUri + "/" + f.getName();
 956         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
 957             @Override
 958             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 959                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix()), f) {
 960
 961                                         @Override
 962                                         public void onSuccess(final Folder _f) {
 963                                 Iterator<File> iter = _f.getFiles().iterator();
 964                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
 965                                     @Override
 966                                     public void execute() {
 967                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
 968                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
 969                                     }
 970                                 });
 971                                         }
 972
 973                                         @Override
 974                                         public void onError(Throwable t) {
 975                                 GWT.log("", t);
 976                                 if (t instanceof RestException) {
 977                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
 978                                 }
 979                                 else
 980                                     displayError("System error getting folder: " + t.getMessage());
 981                                         }
 982
 983                                         @Override
 984                                         protected void onUnauthorized(Response response) {
 985                                                 sessionExpired();
 986                                         }
 987                                 };
 988                                 getFolder.setHeader("X-Auth-Token", getToken());
 989                                 Scheduler.get().scheduleDeferred(getFolder);
 990             }
 991
 992             @Override
 993             public void onError(Throwable t) {
 994                 GWT.log("", t);
 995                 if (t instanceof RestException) {
 996                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
 997                 }
 998                 else
 999                     displayError("System error creating folder: " + t.getMessage());
1000             }
1001
1002                         @Override
1003                         protected void onUnauthorized(Response response) {
1004                                 sessionExpired();
1005                         }
1006         };
1007         createFolder.setHeader("X-Auth-Token", getToken());
1008         createFolder.setHeader("Accept", "*/*");
1009         createFolder.setHeader("Content-Length", "0");
1010         createFolder.setHeader("Content-Type", "application/folder");
1011         Scheduler.get().scheduleDeferred(createFolder);
1012     }
1013
1014     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1015         selectionModels.add(model);
1016     }
1017
1018         public OtherSharedTreeView getOtherSharedTreeView() {
1019                 return otherSharedTreeView;
1020         }
1021
1022         public void updateTrash(boolean showFiles, Command callback) {
1023                 updateFolder(trash, showFiles, callback);
1024         }
1025
1026         public void updateGroupsNode() {
1027                 groupTreeView.updateGroupNode(null);
1028         }
1029
1030         public void addGroup(String groupname) {
1031                 Group newGroup = new Group(groupname);
1032                 account.addGroup(newGroup);
1033                 groupTreeView.updateGroupNode(null);
1034         }
1035
1036         public void removeGroup(Group group) {
1037                 account.removeGroup(group);
1038                 updateGroupsNode();
1039         }
1040
1041         public TreeView getSelectedTree() {
1042                 return selectedTree;
1043         }
1044
1045         public Folder getSelection() {
1046                 return selectedTree.getSelection();
1047         }
1048
1049         public void showFolderStatistics(int folderFileCount) {
1050                 numOfFiles.setHTML(String.valueOf(folderFileCount));
1051         }
1052
1053         public GroupTreeView getGroupTreeView() {
1054                 return groupTreeView;
1055         }
1056
1057         public void sessionExpired() {
1058                 new SessionExpiredDialog(this).center();
1059         }
1060
1061         public void updateRootFolder(Command callback) {
1062                 updateFolder(account.getPithos(), false, callback);
1063         }
1064
1065         void createMySharedTree() {
1066                 mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1067                 mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1068                     @Override
1069                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1070                         if (mysharedTreeSelectionModel.getSelectedObject() != null) {
1071                             deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1072                             upload.setEnabled(false);
1073                             updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1074                         }
1075                     }
1076                 });
1077                 selectionModels.add(mysharedTreeSelectionModel);
1078                 mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1079                 mysharedTreeViewModel.initialize(new Command() {
1080
1081                         @Override
1082                         public void execute() {
1083                             mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1084                                 trees.insert(mysharedTreeView, 3);
1085                                 createOtherSharedTree();
1086                         }
1087                 });
1088         }
1089
1090         void createOtherSharedTree() {
1091                 otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1092                 otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1093                     @Override
1094                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1095                         if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
1096                             deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1097                             applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1098                             updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
1099                         }
1100                     }
1101                 });
1102                 selectionModels.add(otherSharedTreeSelectionModel);
1103                 otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1104                 otherSharedTreeViewModel.initialize(new Command() {
1105
1106                         @Override
1107                         public void execute() {
1108                             otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1109                                 trees.insert(otherSharedTreeView, 4);
1110                         }
1111                 });
1112         }
1113 }