code.grnet.gr Git - pithos-web-client/blob - 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.grouptree.User;
  48 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView;
  49 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeViewModel;
  50 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView;
  51 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeViewModel;
  52 import gr.grnet.pithos.web.client.rest.DeleteRequest;
  53 import gr.grnet.pithos.web.client.rest.GetRequest;
  54 import gr.grnet.pithos.web.client.rest.PutRequest;
  55 import gr.grnet.pithos.web.client.rest.RestException;
  56 import gr.grnet.pithos.web.client.tagtree.Tag;
  57 import gr.grnet.pithos.web.client.tagtree.TagTreeView;
  58 import gr.grnet.pithos.web.client.tagtree.TagTreeViewModel;
  59
  60 import java.util.ArrayList;
  61 import java.util.HashMap;
  62 import java.util.Iterator;
  63 import java.util.List;
  64 import java.util.Set;
  65
  66 import com.google.gwt.core.client.EntryPoint;
  67 import com.google.gwt.core.client.GWT;
  68 import com.google.gwt.core.client.Scheduler;
  69 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  70 import com.google.gwt.event.dom.client.ClickEvent;
  71 import com.google.gwt.event.dom.client.ClickHandler;
  72 import com.google.gwt.event.logical.shared.ResizeEvent;
  73 import com.google.gwt.event.logical.shared.ResizeHandler;
  74 import com.google.gwt.http.client.Request;
  75 import com.google.gwt.http.client.RequestBuilder;
  76 import com.google.gwt.http.client.RequestCallback;
  77 import com.google.gwt.http.client.RequestException;
  78 import com.google.gwt.http.client.Response;
  79 import com.google.gwt.json.client.JSONArray;
  80 import com.google.gwt.json.client.JSONObject;
  81 import com.google.gwt.json.client.JSONParser;
  82 import com.google.gwt.json.client.JSONString;
  83 import com.google.gwt.json.client.JSONValue;
  84 import com.google.gwt.resources.client.ImageResource;
  85 import com.google.gwt.user.client.Command;
  86 import com.google.gwt.user.client.Cookies;
  87 import com.google.gwt.user.client.Event;
  88 import com.google.gwt.user.client.History;
  89 import com.google.gwt.user.client.Window;
  90 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  91 import com.google.gwt.user.client.ui.Button;
  92 import com.google.gwt.user.client.ui.HTML;
  93 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  94 import com.google.gwt.user.client.ui.HasVerticalAlignment;
  95 import com.google.gwt.user.client.ui.HorizontalPanel;
  96 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
  97 import com.google.gwt.user.client.ui.Image;
  98 import com.google.gwt.user.client.ui.PushButton;
  99 import com.google.gwt.user.client.ui.RootPanel;
 100 import com.google.gwt.user.client.ui.VerticalPanel;
 101 import com.google.gwt.view.client.SelectionChangeEvent;
 102 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
 103 import com.google.gwt.view.client.SingleSelectionModel;
 104
 105 /**
 106  * Entry point classes define <code>onModuleLoad()</code>.
 107  */
 108 public class Pithos implements EntryPoint, ResizeHandler {
 109
 110         public static final String HOME_CONTAINER = "pithos";
 111
 112         public static final String TRASH_CONTAINER = "trash";
 113
 114         /**
 115          * Instantiate an application-level image bundle. This object will provide
 116          * programmatic access to all the images needed by widgets.
 117          */
 118         private static Images images = (Images) GWT.create(Images.class);
 119
 120     public String getUsername() {
 121         return username;
 122     }
 123
 124     public void setAccount(AccountResource acct) {
 125         account = acct;
 126     }
 127
 128     public AccountResource getAccount() {
 129         return account;
 130     }
 131
 132     public void updateFolder(Folder f, boolean showfiles, Command callback) {
 133         folderTreeView.updateFolder(f, showfiles, callback);
 134     }
 135
 136     public void updateGroupNode(Group group) {
 137         groupTreeView.updateGroupNode(group);
 138     }
 139
 140     public void updateSharedFolder(Folder f, boolean showfiles) {
 141         mysharedTreeView.updateFolder(f, showfiles);
 142     }
 143
 144     public void updateOtherSharedFolder(Folder f, boolean showfiles) {
 145         otherSharedTreeView.updateFolder(f, showfiles);
 146     }
 147
 148     public void updateTag(Tag t) {
 149         tagTreeView.updateTag(t);
 150     }
 151
 152     public void updateTags() {
 153         tagTreeViewModel.initialize(getAllTags());
 154     }
 155
 156     public List<Tag> getAllTags() {
 157         List<Tag> tagList = new ArrayList<Tag>();
 158         for (Folder f : account.getContainers()) {
 159             for (String t : f.getTags()) {
 160                 tagList.add(new Tag(t));
 161             }
 162         }
 163         return tagList;
 164     }
 165
 166     public MysharedTreeView getMySharedTreeView() {
 167         return mysharedTreeView;
 168     }
 169
 170     /**
 171          * An aggregate image bundle that pulls together all the images for this
 172          * application into a single bundle.
 173          */
 174         public interface Images extends TopPanel.Images, FileList.Images {
 175
 176                 @Source("gr/grnet/pithos/resources/document.png")
 177                 ImageResource folders();
 178
 179                 @Source("gr/grnet/pithos/resources/edit_group_22.png")
 180                 ImageResource groups();
 181
 182                 @Source("gr/grnet/pithos/resources/search.png")
 183                 ImageResource search();
 184         }
 185
 186         /**
 187          * The Application Clipboard implementation;
 188          */
 189         private Clipboard clipboard = new Clipboard();
 190
 191         /**
 192          * The top panel that contains the menu bar.
 193          */
 194         private TopPanel topPanel;
 195
 196         /**
 197          * The panel that contains the various system messages.
 198          */
 199         private MessagePanel messagePanel = new MessagePanel(Pithos.images);
 200
 201         /**
 202          * The bottom panel that contains the status bar.
 203          */
 204         private StatusPanel statusPanel = null;
 205
 206         /**
 207          * The file list widget.
 208          */
 209         private FileList fileList;
 210
 211         /**
 212          * The tab panel that occupies the right side of the screen.
 213          */
 214         private VerticalPanel inner = new VerticalPanel();
 215
 216
 217         /**
 218          * The split panel that will contain the left and right panels.
 219          */
 220         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 221
 222         /**
 223          * The currently selected item in the application, for use by the Edit menu
 224          * commands. Potential types are Folder, File, User and Group.
 225          */
 226         private Object currentSelection;
 227
 228
 229         /**
 230          * The WebDAV password of the current user
 231          */
 232         private String webDAVPassword;
 233
 234         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 235
 236     private String username = null;
 237
 238     /**
 239      * The authentication token of the current user.
 240      */
 241     private String token;
 242
 243     SingleSelectionModel<Folder> folderTreeSelectionModel;
 244     FolderTreeViewModel folderTreeViewModel;
 245     FolderTreeView folderTreeView;
 246
 247     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 248     private MysharedTreeViewModel mysharedTreeViewModel;
 249     MysharedTreeView mysharedTreeView;
 250
 251     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 252     private OtherSharedTreeViewModel otherSharedTreeViewModel;
 253     OtherSharedTreeView otherSharedTreeView;
 254
 255     protected SingleSelectionModel<Tag> tagTreeSelectionModel;
 256     private TagTreeViewModel tagTreeViewModel;
 257     private TagTreeView tagTreeView;
 258
 259     private GroupTreeViewModel groupTreeViewModel;
 260     private GroupTreeView groupTreeView;
 261
 262     private TreeView selectedTree;
 263     protected AccountResource account;
 264
 265     private Folder trash;
 266
 267     @SuppressWarnings("rawtypes")
 268         private List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 269
 270     Button upload;
 271
 272     private HTML totalFiles;
 273
 274     private HTML usedBytes;
 275
 276     private HTML totalBytes;
 277
 278     private HTML usedPercent;
 279
 280         @Override
 281         public void onModuleLoad() {
 282                 if (parseUserCredentials())
 283             initialize();
 284         }
 285
 286     private void initialize() {
 287         VerticalPanel outer = new VerticalPanel();
 288         outer.setWidth("100%");
 289
 290         topPanel = new TopPanel(this, Pithos.images);
 291         topPanel.setWidth("100%");
 292         outer.add(topPanel);
 293
 294         messagePanel.setWidth("100%");
 295         messagePanel.setVisible(false);
 296         outer.add(messagePanel);
 297         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 298
 299
 300         // Inner contains the various lists.
 301         inner.sinkEvents(Event.ONCONTEXTMENU);
 302         inner.setWidth("100%");
 303
 304         HorizontalPanel rightside = new HorizontalPanel();
 305         rightside.addStyleName("pithos-rightSide");
 306         rightside.setSpacing(5);
 307
 308         HTML folderStatistics = new HTML("5 Files (size: 1.1GB)");
 309         folderStatistics.addStyleName("pithos-folderStatistics");
 310         rightside.add(folderStatistics);
 311         inner.add(rightside);
 312         inner.setCellHorizontalAlignment(rightside, HasHorizontalAlignment.ALIGN_RIGHT);
 313         inner.setCellVerticalAlignment(rightside, HasVerticalAlignment.ALIGN_MIDDLE);
 314         inner.setCellHeight(rightside, "60px");
 315
 316         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 317         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 318             @Override
 319             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 320                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 321                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 322                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 323                     Folder f = folderTreeSelectionModel.getSelectedObject();
 324                     updateFolder(f, true, null);
 325                 }
 326             }
 327         });
 328         selectionModels.add(folderTreeSelectionModel);
 329
 330         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 331         folderTreeView = new FolderTreeView(folderTreeViewModel);
 332
 333         fileList = new FileList(this, images, folderTreeView);
 334         inner.add(fileList);
 335
 336         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 337         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 338             @Override
 339             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 340                 if (mysharedTreeSelectionModel.getSelectedObject() != null) {
 341                     deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
 342                     upload.setEnabled(false);
 343                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
 344                 }
 345             }
 346         });
 347         selectionModels.add(mysharedTreeSelectionModel);
 348         mysharedTreeViewModel = new MysharedTreeViewModel(this, mysharedTreeSelectionModel);
 349         mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
 350
 351         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 352         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 353             @Override
 354             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 355                 if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
 356                     deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
 357                     applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
 358                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
 359                 }
 360             }
 361         });
 362         selectionModels.add(otherSharedTreeSelectionModel);
 363         otherSharedTreeViewModel = new OtherSharedTreeViewModel(this, otherSharedTreeSelectionModel);
 364         otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
 365
 366         groupTreeViewModel = new GroupTreeViewModel(this);
 367         groupTreeView = new GroupTreeView(groupTreeViewModel);
 368
 369         VerticalPanel trees = new VerticalPanel();
 370
 371         upload = new Button("Upload File", new ClickHandler() {
 372             @Override
 373             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 374                 new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 375             }
 376         });
 377         upload.addStyleName("pithos-uploadButton");
 378         trees.add(upload);
 379
 380         HorizontalPanel treeHeader = new HorizontalPanel();
 381         treeHeader.addStyleName("pithos-treeHeader");
 382         HorizontalPanel statistics = new HorizontalPanel();
 383         statistics.add(new HTML("Total Files:&nbsp;"));
 384         totalFiles = new HTML();
 385         statistics.add(totalFiles);
 386         statistics.add(new HTML("&nbsp;|&nbsp;Used:&nbsp;"));
 387         usedBytes = new HTML();
 388         statistics.add(usedBytes);
 389         statistics.add(new HTML("&nbsp;of&nbsp;"));
 390         totalBytes = new HTML();
 391         statistics.add(totalBytes);
 392         statistics.add(new HTML("&nbsp;("));
 393         usedPercent = new HTML();
 394         statistics.add(usedPercent);
 395         statistics.add(new HTML("%)"));
 396         treeHeader.add(statistics);
 397         trees.add(treeHeader);
 398
 399         trees.add(folderTreeView);
 400         trees.add(mysharedTreeView);
 401         trees.add(otherSharedTreeView);
 402 //        trees.add(tagTreeView);
 403         trees.add(groupTreeView);
 404         // Add the left and right panels to the split panel.
 405         splitPanel.setLeftWidget(trees);
 406         splitPanel.setRightWidget(inner);
 407         splitPanel.setSplitPosition("25%");
 408         splitPanel.setSize("100%", "100%");
 409         splitPanel.addStyleName("pithos-splitPanel");
 410         outer.add(splitPanel);
 411
 412         statusPanel = new StatusPanel();
 413         outer.add(statusPanel);
 414
 415
 416         // Hook the window resize event, so that we can adjust the UI.
 417         Window.addResizeHandler(this);
 418         // Clear out the window's built-in margin, because we want to take
 419         // advantage of the entire client area.
 420         Window.setMargin("0px");
 421         // Finally, add the outer panel to the RootPanel, so that it will be
 422         // displayed.
 423         RootPanel.get().add(outer);
 424         // Call the window resized handler to get the initial sizes setup. Doing
 425         // this in a deferred command causes it to occur after all widgets'
 426         // sizes have been computed by the browser.
 427         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 428
 429             @Override
 430             public void execute() {
 431                 onWindowResized(Window.getClientHeight());
 432             }
 433         });
 434
 435         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 436             @Override
 437             public void execute() {
 438                 fetchAccount();
 439             }
 440         });
 441     }
 442
 443     public void applyPermissions(Folder f) {
 444         if (f != null) {
 445                 if (f.isInTrash())
 446                         upload.setEnabled(false);
 447                 else {
 448                         Boolean[] perms = f.getPermissions().get(username);
 449                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 450                                 upload.setEnabled(true);
 451                         }
 452                         else
 453                                 upload.setEnabled(false);
 454                 }
 455         }
 456         else
 457                 upload.setEnabled(false);
 458         }
 459
 460         @SuppressWarnings({ "rawtypes", "unchecked" })
 461         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 462         selectedTree = _selectedTree;
 463         for (SingleSelectionModel s : selectionModels)
 464             if (!s.equals(model))
 465                 s.setSelected(s.getSelectedObject(), false);
 466     }
 467
 468     public void showFiles(Folder f) {
 469         Set<File> files = f.getFiles();
 470         showFiles(files);
 471     }
 472
 473     public void showFiles(Set<File> files) {
 474         //Iterator<File> iter = files.iterator();
 475         //fetchFile(iter, files);
 476         fileList.setFiles(new ArrayList<File>(files));
 477     }
 478
 479     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 480         if (iter.hasNext()) {
 481             File file = iter.next();
 482             String path = file.getUri() + "?format=json";
 483             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 484                 @Override
 485                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 486                     fetchFile(iter, files);
 487                 }
 488
 489                 @Override
 490                 public void onError(Throwable t) {
 491                     GWT.log("Error getting file", t);
 492                     if (t instanceof RestException)
 493                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 494                     else
 495                         displayError("System error fetching file: " + t.getMessage());
 496                 }
 497             };
 498             getFile.setHeader("X-Auth-Token", "0000");
 499             Scheduler.get().scheduleDeferred(getFile);
 500         }
 501         else
 502             fileList.setFiles(new ArrayList<File>(files));
 503     }
 504
 505     /**
 506          * Parse and store the user credentials to the appropriate fields.
 507          */
 508         private boolean parseUserCredentials() {
 509         username = Window.Location.getParameter("user");
 510         token = Window.Location.getParameter("token");
 511         Configuration conf = (Configuration) GWT.create(Configuration.class);
 512         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 513             String cookie = conf.authCookie();
 514             String auth = Cookies.getCookie(cookie);
 515             if (auth == null) {
 516                 authenticateUser();
 517                 return false;
 518             }
 519                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 520                         if (authSplit.length != 2) {
 521                             authenticateUser();
 522                             return false;
 523                         }
 524                         username = authSplit[0];
 525                         token = authSplit[1];
 526                         return true;
 527         }
 528                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
 529                 return true;
 530     }
 531
 532     /**
 533          * Redirect the user to the login page for authentication.
 534          */
 535         protected void authenticateUser() {
 536                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 537         Window.Location.assign(conf.loginUrl() + "?next=" + Window.Location.getHref());
 538         }
 539
 540         protected void fetchAccount() {
 541         String path = "?format=json";
 542
 543         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 544             @Override
 545             public void onSuccess(AccountResource _result) {
 546                 account = _result;
 547                 if (!account.hasHomeContainer())
 548                     createHomeContainer(account);
 549                 else if (!account.hasTrashContainer())
 550                         createTrashContainer();
 551                 else {
 552                         for (Folder f : account.getContainers())
 553                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 554                                         trash = f;
 555                                         break;
 556                                 }
 557                     folderTreeViewModel.initialize(account);
 558                     groupTreeViewModel.initialize();
 559                     updateStatistics();
 560                 }
 561             }
 562
 563             @Override
 564             public void onError(Throwable t) {
 565                 GWT.log("Error getting account", t);
 566                 if (t instanceof RestException)
 567                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 568                 else
 569                     displayError("System error fetching user data: " + t.getMessage());
 570             }
 571         };
 572         getAccount.setHeader("X-Auth-Token", token);
 573         Scheduler.get().scheduleDeferred(getAccount);
 574     }
 575
 576     protected void updateStatistics() {
 577         totalFiles.setHTML(String.valueOf(account.getNumberOfObjects()));
 578         usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
 579         totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
 580         usedPercent.setHTML(String.valueOf(account.getUsedPercentage()));
 581         }
 582
 583         protected void createHomeContainer(final AccountResource account) {
 584         String path = "/" + Pithos.HOME_CONTAINER;
 585         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 586             @Override
 587             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 588                 if (!account.hasTrashContainer())
 589                         createTrashContainer();
 590                 else
 591                         fetchAccount();
 592             }
 593
 594             @Override
 595             public void onError(Throwable t) {
 596                 GWT.log("Error creating pithos", t);
 597                 if (t instanceof RestException)
 598                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 599                 else
 600                     displayError("System error Error creating pithos: " + t.getMessage());
 601             }
 602         };
 603         createPithos.setHeader("X-Auth-Token", getToken());
 604         Scheduler.get().scheduleDeferred(createPithos);
 605     }
 606
 607     protected void createTrashContainer() {
 608         String path = "/" + Pithos.TRASH_CONTAINER;
 609         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 610             @Override
 611             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 612                         fetchAccount();
 613             }
 614
 615             @Override
 616             public void onError(Throwable t) {
 617                 GWT.log("Error creating pithos", t);
 618                 if (t instanceof RestException)
 619                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 620                 else
 621                     displayError("System error Error creating pithos: " + t.getMessage());
 622             }
 623         };
 624         createPithos.setHeader("X-Auth-Token", getToken());
 625         Scheduler.get().scheduleDeferred(createPithos);
 626     }
 627
 628     /**
 629          * Creates an HTML fragment that places an image & caption together, for use
 630          * in a group header.
 631          *
 632          * @param imageProto an image prototype for an image
 633          * @param caption the group caption
 634          * @return the header HTML fragment
 635          */
 636         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 637                 String captionHTML = "<table class='caption' cellpadding='0' "
 638                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 639                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 640                 + caption + "</b></td></tr></table>";
 641                 return captionHTML;
 642         }
 643
 644         protected void onWindowResized(int height) {
 645                 // Adjust the split panel to take up the available room in the window.
 646                 int newHeight = height - splitPanel.getAbsoluteTop() - 60;
 647                 if (newHeight < 1)
 648                         newHeight = 1;
 649                 splitPanel.setHeight("" + newHeight);
 650                 inner.setHeight("" + newHeight);
 651         }
 652
 653         @Override
 654         public void onResize(ResizeEvent event) {
 655                 int height = event.getHeight();
 656                 onWindowResized(height);
 657         }
 658
 659         /**
 660          * Display an error message.
 661          *
 662          * @param msg the message to display
 663          */
 664         public void displayError(String msg) {
 665                 messagePanel.displayError(msg);
 666         }
 667
 668         /**
 669          * Display a warning message.
 670          *
 671          * @param msg the message to display
 672          */
 673         public void displayWarning(String msg) {
 674                 messagePanel.displayWarning(msg);
 675         }
 676
 677         /**
 678          * Display an informational message.
 679          *
 680          * @param msg the message to display
 681          */
 682         public void displayInformation(String msg) {
 683                 messagePanel.displayInformation(msg);
 684         }
 685
 686         /**
 687          * Retrieve the fileList.
 688          *
 689          * @return the fileList
 690          */
 691         public FileList getFileList() {
 692                 return fileList;
 693         }
 694
 695         /**
 696          * Retrieve the topPanel.
 697          *
 698          * @return the topPanel
 699          */
 700         TopPanel getTopPanel() {
 701                 return topPanel;
 702         }
 703
 704         /**
 705          * Retrieve the clipboard.
 706          *
 707          * @return the clipboard
 708          */
 709         public Clipboard getClipboard() {
 710                 return clipboard;
 711         }
 712
 713         public StatusPanel getStatusPanel() {
 714                 return statusPanel;
 715         }
 716
 717         public String getToken() {
 718                 return token;
 719         }
 720
 721         public String getWebDAVPassword() {
 722                 return webDAVPassword;
 723         }
 724
 725         public static native void preventIESelection() /*-{
 726                 $doc.body.onselectstart = function () { return false; };
 727         }-*/;
 728
 729         public static native void enableIESelection() /*-{
 730                 if ($doc.body.onselectstart != null)
 731                 $doc.body.onselectstart = null;
 732         }-*/;
 733
 734         /**
 735          * @return the absolute path of the API root URL
 736          */
 737         public String getApiPath() {
 738                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 739                 return conf.apiPath();
 740         }
 741
 742         /**
 743          * History support for folder navigation
 744          * adds a new browser history entry
 745          *
 746          * @param key
 747          */
 748         public void updateHistory(String key){
 749 //              Replace any whitespace of the initial string to "+"
 750 //              String result = key.replaceAll("\\s","+");
 751 //              Add a new browser history entry.
 752 //              History.newItem(result);
 753                 History.newItem(key);
 754         }
 755
 756     public void deleteFolder(final Folder folder) {
 757         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + folder.getPrefix();
 758         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 759         builder.setHeader("If-Modified-Since", "0");
 760         builder.setHeader("X-Auth-Token", getToken());
 761         try {
 762             builder.sendRequest("", new RequestCallback() {
 763                 @Override
 764                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 765                     if (response.getStatusCode() == Response.SC_OK) {
 766                         JSONValue json = JSONParser.parseStrict(response.getText());
 767                         JSONArray array = json.isArray();
 768                         int i = 0;
 769                         if (array != null) {
 770                             deleteObject(folder, i, array);
 771                         }
 772                     }
 773                 }
 774
 775                 @Override
 776                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 777                     displayError("System error unable to delete folder: " + exception.getMessage());
 778                 }
 779             });
 780         }
 781         catch (RequestException e) {
 782         }
 783     }
 784
 785     public void deleteObject(final Folder folder, final int i, final JSONArray array) {
 786         if (i < array.size()) {
 787             JSONObject o = array.get(i).isObject();
 788             if (o != null && !o.containsKey("subdir")) {
 789                 JSONString name = o.get("name").isString();
 790                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 791                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
 792                     @Override
 793                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 794                         deleteObject(folder, i + 1, array);
 795                     }
 796
 797                     @Override
 798                     public void onError(Throwable t) {
 799                         GWT.log("", t);
 800                         displayError("System error unable to delete folder: " + t.getMessage());
 801                     }
 802                 };
 803                 delete.setHeader("X-Auth-Token", getToken());
 804                 Scheduler.get().scheduleDeferred(delete);
 805             }
 806             else if (o != null) {
 807                 String subdir = o.get("subdir").isString().stringValue();
 808                 subdir = subdir.substring(0, subdir.length() - 1);
 809                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + subdir;
 810                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 811                 builder.setHeader("If-Modified-Since", "0");
 812                 builder.setHeader("X-Auth-Token", getToken());
 813                 try {
 814                     builder.sendRequest("", new RequestCallback() {
 815                         @Override
 816                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 817                             if (response.getStatusCode() == Response.SC_OK) {
 818                                 JSONValue json = JSONParser.parseStrict(response.getText());
 819                                 JSONArray array2 = json.isArray();
 820                                 if (array2 != null) {
 821                                     int l = array.size();
 822                                     for (int j=0; j<array2.size(); j++) {
 823                                         array.set(l++, array2.get(j));
 824                                     }
 825                                 }
 826                                 deleteObject(folder, i + 1, array);
 827                             }
 828                         }
 829
 830                         @Override
 831                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 832                             displayError("System error unable to delete folder: " + exception.getMessage());
 833                         }
 834                     });
 835                 }
 836                 catch (RequestException e) {
 837                 }
 838             }
 839         }
 840         else {
 841             String path = folder.getUri();
 842             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 843                 @Override
 844                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 845                     updateFolder(folder.getParent(), true, null);
 846                 }
 847
 848                 @Override
 849                 public void onError(Throwable t) {
 850                     GWT.log("", t);
 851                     if (t instanceof RestException) {
 852                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 853                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 854                         else
 855                                 onSuccess(null);
 856                     }
 857                     else
 858                         displayError("System error unable to delete folder: " + t.getMessage());
 859                 }
 860             };
 861             deleteFolder.setHeader("X-Auth-Token", getToken());
 862             Scheduler.get().scheduleDeferred(deleteFolder);
 863         }
 864     }
 865
 866     public FolderTreeView getFolderTreeView() {
 867         return folderTreeView;
 868     }
 869
 870     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 871         if (iter.hasNext()) {
 872             File file = iter.next();
 873             String path = targetUri + "/" + file.getName();
 874             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 875                 @Override
 876                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 877                     copyFiles(iter, targetUsername, targetUri, callback);
 878                 }
 879
 880                 @Override
 881                 public void onError(Throwable t) {
 882                     GWT.log("", t);
 883                     if (t instanceof RestException) {
 884                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 885                     }
 886                     else
 887                         displayError("System error unable to copy file: "+t.getMessage());
 888                 }
 889             };
 890             copyFile.setHeader("X-Auth-Token", getToken());
 891             copyFile.setHeader("X-Copy-From", file.getUri());
 892             Scheduler.get().scheduleDeferred(copyFile);
 893         }
 894         else  if (callback != null) {
 895             callback.execute();
 896         }
 897     }
 898
 899     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
 900         if (iter.hasNext()) {
 901             final Folder f = iter.next();
 902             copyFolder(f, targetUsername, targetUri, callback);
 903         }
 904         else  if (callback != null) {
 905             callback.execute();
 906         }
 907     }
 908
 909     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
 910         String path = targetUri + "/" + f.getName();
 911         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
 912             @Override
 913             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 914                 Iterator<File> iter = f.getFiles().iterator();
 915                 copyFiles(iter, targetUsername, targetUri + "/" + f.getName(), new Command() {
 916                     @Override
 917                     public void execute() {
 918                         Iterator<Folder> iterf = f.getSubfolders().iterator();
 919                         copySubfolders(iterf, targetUsername, targetUri + "/" + f.getName(), new Command() {
 920                             @Override
 921                             public void execute() {
 922                                 callback.execute();
 923                             }
 924                         });
 925                     }
 926                 });
 927             }
 928
 929             @Override
 930             public void onError(Throwable t) {
 931                 GWT.log("", t);
 932                 if (t instanceof RestException) {
 933                     displayError("Unable to create folder:" + ((RestException) t).getHttpStatusText());
 934                 }
 935                 else
 936                     displayError("System error creating folder:" + t.getMessage());
 937             }
 938         };
 939         createFolder.setHeader("X-Auth-Token", getToken());
 940         createFolder.setHeader("Accept", "*/*");
 941         createFolder.setHeader("Content-Length", "0");
 942         createFolder.setHeader("Content-Type", "application/folder");
 943         Scheduler.get().scheduleDeferred(createFolder);
 944     }
 945
 946     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
 947         selectionModels.add(model);
 948     }
 949
 950         public OtherSharedTreeView getOtherSharedTreeView() {
 951                 return otherSharedTreeView;
 952         }
 953
 954         public void updateTrash(boolean showFiles, Command callback) {
 955                 updateFolder(trash, showFiles, callback);
 956         }
 957
 958         public void updateGroupsNode() {
 959                 groupTreeView.updateGroupNode(null);
 960         }
 961
 962         public void addGroup(String groupname) {
 963                 Group newGroup = new Group(groupname);
 964                 account.addGroup(newGroup);
 965                 groupTreeView.updateGroupNode(null);
 966         }
 967
 968         public void removeGroup(Group group) {
 969                 account.removeGroup(group);
 970                 updateGroupsNode();
 971         }
 972
 973         public TreeView getSelectedTree() {
 974                 return selectedTree;
 975         }
 976
 977         public Folder getSelection() {
 978                 return selectedTree.getSelection();
 979         }
 980 }