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.mysharedtree.MysharedTreeView;
  45 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeViewModel;
  46 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView;
  47 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeViewModel;
  48 import gr.grnet.pithos.web.client.rest.DeleteRequest;
  49 import gr.grnet.pithos.web.client.rest.GetRequest;
  50 import gr.grnet.pithos.web.client.rest.PutRequest;
  51 import gr.grnet.pithos.web.client.rest.RestException;
  52 import gr.grnet.pithos.web.client.tagtree.Tag;
  53 import gr.grnet.pithos.web.client.tagtree.TagTreeView;
  54 import gr.grnet.pithos.web.client.tagtree.TagTreeViewModel;
  55
  56 import java.util.ArrayList;
  57 import java.util.HashMap;
  58 import java.util.Iterator;
  59 import java.util.List;
  60 import java.util.Set;
  61
  62 import com.google.gwt.core.client.EntryPoint;
  63 import com.google.gwt.core.client.GWT;
  64 import com.google.gwt.core.client.Scheduler;
  65 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  66 import com.google.gwt.event.dom.client.ClickEvent;
  67 import com.google.gwt.event.dom.client.ClickHandler;
  68 import com.google.gwt.event.logical.shared.ResizeEvent;
  69 import com.google.gwt.event.logical.shared.ResizeHandler;
  70 import com.google.gwt.http.client.Request;
  71 import com.google.gwt.http.client.RequestBuilder;
  72 import com.google.gwt.http.client.RequestCallback;
  73 import com.google.gwt.http.client.RequestException;
  74 import com.google.gwt.http.client.Response;
  75 import com.google.gwt.json.client.JSONArray;
  76 import com.google.gwt.json.client.JSONObject;
  77 import com.google.gwt.json.client.JSONParser;
  78 import com.google.gwt.json.client.JSONString;
  79 import com.google.gwt.json.client.JSONValue;
  80 import com.google.gwt.resources.client.ImageResource;
  81 import com.google.gwt.user.client.Command;
  82 import com.google.gwt.user.client.Cookies;
  83 import com.google.gwt.user.client.Event;
  84 import com.google.gwt.user.client.History;
  85 import com.google.gwt.user.client.Window;
  86 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  87 import com.google.gwt.user.client.ui.Button;
  88 import com.google.gwt.user.client.ui.HTML;
  89 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  90 import com.google.gwt.user.client.ui.HasVerticalAlignment;
  91 import com.google.gwt.user.client.ui.HorizontalPanel;
  92 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
  93 import com.google.gwt.user.client.ui.Image;
  94 import com.google.gwt.user.client.ui.PushButton;
  95 import com.google.gwt.user.client.ui.RootPanel;
  96 import com.google.gwt.user.client.ui.VerticalPanel;
  97 import com.google.gwt.view.client.SelectionChangeEvent;
  98 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
  99 import com.google.gwt.view.client.SingleSelectionModel;
 100
 101 /**
 102  * Entry point classes define <code>onModuleLoad()</code>.
 103  */
 104 public class Pithos implements EntryPoint, ResizeHandler {
 105
 106         public static final String HOME_CONTAINER = "pithos";
 107
 108         public static final String TRASH_CONTAINER = "trash";
 109
 110         /**
 111          * Instantiate an application-level image bundle. This object will provide
 112          * programmatic access to all the images needed by widgets.
 113          */
 114         private static Images images = (Images) GWT.create(Images.class);
 115
 116     public String getUsername() {
 117         return username;
 118     }
 119
 120     public void setAccount(AccountResource acct) {
 121         account = acct;
 122     }
 123
 124     public AccountResource getAccount() {
 125         return account;
 126     }
 127
 128     public void updateFolder(Folder f, boolean showfiles) {
 129         folderTreeView.updateFolder(f, showfiles);
 130     }
 131
 132     public void updateSharedFolder(Folder f, boolean showfiles) {
 133         mysharedTreeView.updateFolder(f, showfiles);
 134     }
 135
 136     public void updateOtherSharedFolder(Folder f, boolean showfiles) {
 137         otherSharedTreeView.updateFolder(f, showfiles);
 138     }
 139
 140     public void updateTag(Tag t) {
 141         tagTreeView.updateTag(t);
 142     }
 143
 144     public void updateTags() {
 145         tagTreeViewModel.initialize(getAllTags());
 146     }
 147
 148     public List<Tag> getAllTags() {
 149         List<Tag> tagList = new ArrayList<Tag>();
 150         for (Folder f : account.getContainers()) {
 151             for (String t : f.getTags()) {
 152                 tagList.add(new Tag(t));
 153             }
 154         }
 155         return tagList;
 156     }
 157
 158     public MysharedTreeView getMySharedTreeView() {
 159         return mysharedTreeView;
 160     }
 161
 162     /**
 163          * An aggregate image bundle that pulls together all the images for this
 164          * application into a single bundle.
 165          */
 166         public interface Images extends TopPanel.Images, FileList.Images {
 167
 168                 @Source("gr/grnet/pithos/resources/document.png")
 169                 ImageResource folders();
 170
 171                 @Source("gr/grnet/pithos/resources/edit_group_22.png")
 172                 ImageResource groups();
 173
 174                 @Source("gr/grnet/pithos/resources/search.png")
 175                 ImageResource search();
 176         }
 177
 178         /**
 179          * The Application Clipboard implementation;
 180          */
 181         private Clipboard clipboard = new Clipboard();
 182
 183         /**
 184          * The top panel that contains the menu bar.
 185          */
 186         private TopPanel topPanel;
 187
 188         /**
 189          * The panel that contains the various system messages.
 190          */
 191         private MessagePanel messagePanel = new MessagePanel(Pithos.images);
 192
 193         /**
 194          * The bottom panel that contains the status bar.
 195          */
 196         private StatusPanel statusPanel = null;
 197
 198         /**
 199          * The file list widget.
 200          */
 201         private FileList fileList;
 202
 203         /**
 204          * The tab panel that occupies the right side of the screen.
 205          */
 206         private VerticalPanel inner = new VerticalPanel();
 207
 208
 209         /**
 210          * The split panel that will contain the left and right panels.
 211          */
 212         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 213
 214         /**
 215          * The currently selected item in the application, for use by the Edit menu
 216          * commands. Potential types are Folder, File, User and Group.
 217          */
 218         private Object currentSelection;
 219
 220
 221         /**
 222          * The WebDAV password of the current user
 223          */
 224         private String webDAVPassword;
 225
 226         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 227
 228     private String username = null;
 229
 230     /**
 231      * The authentication token of the current user.
 232      */
 233     private String token;
 234
 235     protected SingleSelectionModel<Folder> folderTreeSelectionModel;
 236     protected FolderTreeViewModel folderTreeViewModel;
 237     protected FolderTreeView folderTreeView;
 238
 239     protected SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 240     private MysharedTreeViewModel mysharedTreeViewModel;
 241     private MysharedTreeView mysharedTreeView;
 242
 243     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 244     private OtherSharedTreeViewModel otherSharedTreeViewModel;
 245     private OtherSharedTreeView otherSharedTreeView;
 246
 247     protected SingleSelectionModel<Tag> tagTreeSelectionModel;
 248     private TagTreeViewModel tagTreeViewModel;
 249     private TagTreeView tagTreeView;
 250
 251     protected AccountResource account;
 252
 253     @SuppressWarnings("rawtypes")
 254         private List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 255
 256         @Override
 257         public void onModuleLoad() {
 258                 if (parseUserCredentials())
 259             initialize();
 260         }
 261
 262     private void initialize() {
 263         VerticalPanel outer = new VerticalPanel();
 264         outer.setWidth("100%");
 265
 266         topPanel = new TopPanel(this, Pithos.images);
 267         topPanel.setWidth("100%");
 268         outer.add(topPanel);
 269
 270         messagePanel.setWidth("100%");
 271         messagePanel.setVisible(false);
 272         outer.add(messagePanel);
 273         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 274
 275
 276         // Inner contains the various lists.
 277         inner.sinkEvents(Event.ONCONTEXTMENU);
 278         inner.setWidth("100%");
 279
 280         HorizontalPanel rightside = new HorizontalPanel();
 281         rightside.addStyleName("pithos-rightSide");
 282         rightside.setSpacing(5);
 283
 284         PushButton parentButton = new PushButton(new Image(images.asc()), new ClickHandler() {
 285             @Override
 286             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 287
 288             }
 289         });
 290         parentButton.addStyleName("pithos-parentButton");
 291         rightside.add(parentButton);
 292
 293         HTML folderStatistics = new HTML("5 Files (size: 1.1GB)");
 294         folderStatistics.addStyleName("pithos-folderStatistics");
 295         rightside.add(folderStatistics);
 296         inner.add(rightside);
 297         inner.setCellHorizontalAlignment(rightside, HasHorizontalAlignment.ALIGN_RIGHT);
 298         inner.setCellVerticalAlignment(rightside, HasVerticalAlignment.ALIGN_MIDDLE);
 299         inner.setCellHeight(rightside, "60px");
 300
 301         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 302         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 303             @Override
 304             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 305                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 306                     deselectOthers(folderTreeSelectionModel);
 307                     Folder f = folderTreeSelectionModel.getSelectedObject();
 308                     updateFolder(f, true);
 309                 }
 310             }
 311         });
 312         selectionModels.add(folderTreeSelectionModel);
 313
 314         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 315         folderTreeView = new FolderTreeView(folderTreeViewModel);
 316
 317         fileList = new FileList(this, images, folderTreeView);
 318         inner.add(fileList);
 319
 320         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 321         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 322             @Override
 323             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 324                 if (mysharedTreeSelectionModel.getSelectedObject() != null) {
 325                     deselectOthers(mysharedTreeSelectionModel);
 326                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
 327                 }
 328             }
 329         });
 330         selectionModels.add(mysharedTreeSelectionModel);
 331         mysharedTreeViewModel = new MysharedTreeViewModel(this, mysharedTreeSelectionModel);
 332         mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
 333
 334         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 335         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 336             @Override
 337             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 338                 if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
 339                     deselectOthers(otherSharedTreeSelectionModel);
 340                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
 341                 }
 342             }
 343         });
 344         selectionModels.add(otherSharedTreeSelectionModel);
 345         otherSharedTreeViewModel = new OtherSharedTreeViewModel(this, otherSharedTreeSelectionModel);
 346         otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
 347
 348         tagTreeSelectionModel = new SingleSelectionModel<Tag>();
 349         tagTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 350             @Override
 351             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 352                 if (tagTreeSelectionModel.getSelectedObject() != null) {
 353                     deselectOthers(tagTreeSelectionModel);
 354                     Tag t = tagTreeSelectionModel.getSelectedObject();
 355                     updateTag(t);
 356                 }
 357             }
 358         });
 359         selectionModels.add(tagTreeSelectionModel);
 360         tagTreeViewModel = new TagTreeViewModel(this, tagTreeSelectionModel);
 361         tagTreeView = new TagTreeView(tagTreeViewModel);
 362
 363         VerticalPanel trees = new VerticalPanel();
 364
 365         Button upload = new Button("Upload File", new ClickHandler() {
 366             @Override
 367             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 368                 new UploadFileCommand(Pithos.this, null, folderTreeView.getSelection()).execute();
 369             }
 370         });
 371         upload.addStyleName("pithos-uploadButton");
 372         trees.add(upload);
 373
 374         HorizontalPanel treeHeader = new HorizontalPanel();
 375         treeHeader.addStyleName("pithos-treeHeader");
 376         treeHeader.add(new HTML("Total Files: 6 | Used: 2.1 of 50 GB (4.2%)"));
 377         trees.add(treeHeader);
 378
 379         trees.add(folderTreeView);
 380         trees.add(mysharedTreeView);
 381         trees.add(otherSharedTreeView);
 382 //        trees.add(tagTreeView);
 383         // Add the left and right panels to the split panel.
 384         splitPanel.setLeftWidget(trees);
 385         splitPanel.setRightWidget(inner);
 386         splitPanel.setSplitPosition("25%");
 387         splitPanel.setSize("100%", "100%");
 388         splitPanel.addStyleName("pithos-splitPanel");
 389         outer.add(splitPanel);
 390
 391         statusPanel = new StatusPanel();
 392         outer.add(statusPanel);
 393
 394
 395         // Hook the window resize event, so that we can adjust the UI.
 396         Window.addResizeHandler(this);
 397         // Clear out the window's built-in margin, because we want to take
 398         // advantage of the entire client area.
 399         Window.setMargin("0px");
 400         // Finally, add the outer panel to the RootPanel, so that it will be
 401         // displayed.
 402         RootPanel.get().add(outer);
 403         // Call the window resized handler to get the initial sizes setup. Doing
 404         // this in a deferred command causes it to occur after all widgets'
 405         // sizes have been computed by the browser.
 406         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 407
 408             @Override
 409             public void execute() {
 410                 onWindowResized(Window.getClientHeight());
 411             }
 412         });
 413
 414         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 415             @Override
 416             public void execute() {
 417                 fetchAccount();
 418             }
 419         });
 420     }
 421
 422     @SuppressWarnings({ "rawtypes", "unchecked" })
 423         public void deselectOthers(SingleSelectionModel model) {
 424         for (SingleSelectionModel s : selectionModels)
 425             if (!s.equals(model))
 426                 s.setSelected(s.getSelectedObject(), false);
 427     }
 428
 429     public void showFiles(Folder f) {
 430         Set<File> files = f.getFiles();
 431         showFiles(files);
 432     }
 433
 434     public void showFiles(Set<File> files) {
 435         //Iterator<File> iter = files.iterator();
 436         //fetchFile(iter, files);
 437         fileList.setFiles(new ArrayList<File>(files));
 438     }
 439
 440     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 441         if (iter.hasNext()) {
 442             File file = iter.next();
 443             String path = file.getUri() + "?format=json";
 444             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 445                 @Override
 446                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 447                     fetchFile(iter, files);
 448                 }
 449
 450                 @Override
 451                 public void onError(Throwable t) {
 452                     GWT.log("Error getting file", t);
 453                     if (t instanceof RestException)
 454                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 455                     else
 456                         displayError("System error fetching file: " + t.getMessage());
 457                 }
 458             };
 459             getFile.setHeader("X-Auth-Token", "0000");
 460             Scheduler.get().scheduleDeferred(getFile);
 461         }
 462         else
 463             fileList.setFiles(new ArrayList<File>(files));
 464     }
 465
 466     /**
 467          * Parse and store the user credentials to the appropriate fields.
 468          */
 469         private boolean parseUserCredentials() {
 470         username = Window.Location.getParameter("user");
 471         token = Window.Location.getParameter("token");
 472         Configuration conf = (Configuration) GWT.create(Configuration.class);
 473         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 474             String cookie = conf.authCookie();
 475             String auth = Cookies.getCookie(cookie);
 476             if (auth == null) {
 477                 authenticateUser();
 478                 return false;
 479             }
 480                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 481                         if (authSplit.length != 2) {
 482                             authenticateUser();
 483                             return false;
 484                         }
 485                         username = authSplit[0];
 486                         token = authSplit[1];
 487                         return true;
 488         }
 489                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
 490                 return true;
 491     }
 492
 493     /**
 494          * Redirect the user to the login page for authentication.
 495          */
 496         protected void authenticateUser() {
 497                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 498         Window.Location.assign(Window.Location.getHost() + conf.loginUrl() + "?next=" + Window.Location.getHref());
 499         }
 500
 501         protected void fetchAccount() {
 502         String path = "?format=json";
 503
 504         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 505             @Override
 506             public void onSuccess(AccountResource _result) {
 507                 account = _result;
 508                 if (!account.hasHomeContainer())
 509                     createHomeContainer(account);
 510                 else if (!account.hasTrashContainer())
 511                         createTrashContainer();
 512                 else {
 513                     folderTreeViewModel.initialize(account);
 514                 }
 515             }
 516
 517             @Override
 518             public void onError(Throwable t) {
 519                 GWT.log("Error getting account", t);
 520                 if (t instanceof RestException)
 521                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 522                 else
 523                     displayError("System error fetching user data: " + t.getMessage());
 524             }
 525         };
 526         getAccount.setHeader("X-Auth-Token", token);
 527         Scheduler.get().scheduleDeferred(getAccount);
 528     }
 529
 530     protected void createHomeContainer(final AccountResource account) {
 531         String path = "/" + Pithos.HOME_CONTAINER;
 532         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 533             @Override
 534             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 535                 if (!account.hasTrashContainer())
 536                         createTrashContainer();
 537                 else
 538                         fetchAccount();
 539             }
 540
 541             @Override
 542             public void onError(Throwable t) {
 543                 GWT.log("Error creating pithos", t);
 544                 if (t instanceof RestException)
 545                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 546                 else
 547                     displayError("System error Error creating pithos: " + t.getMessage());
 548             }
 549         };
 550         createPithos.setHeader("X-Auth-Token", getToken());
 551         Scheduler.get().scheduleDeferred(createPithos);
 552     }
 553
 554     protected void createTrashContainer() {
 555         String path = "/" + Pithos.TRASH_CONTAINER;
 556         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 557             @Override
 558             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 559                         fetchAccount();
 560             }
 561
 562             @Override
 563             public void onError(Throwable t) {
 564                 GWT.log("Error creating pithos", t);
 565                 if (t instanceof RestException)
 566                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 567                 else
 568                     displayError("System error Error creating pithos: " + t.getMessage());
 569             }
 570         };
 571         createPithos.setHeader("X-Auth-Token", getToken());
 572         Scheduler.get().scheduleDeferred(createPithos);
 573     }
 574
 575     /**
 576          * Creates an HTML fragment that places an image & caption together, for use
 577          * in a group header.
 578          *
 579          * @param imageProto an image prototype for an image
 580          * @param caption the group caption
 581          * @return the header HTML fragment
 582          */
 583         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 584                 String captionHTML = "<table class='caption' cellpadding='0' "
 585                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 586                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 587                 + caption + "</b></td></tr></table>";
 588                 return captionHTML;
 589         }
 590
 591         protected void onWindowResized(int height) {
 592                 // Adjust the split panel to take up the available room in the window.
 593                 int newHeight = height - splitPanel.getAbsoluteTop() - 60;
 594                 if (newHeight < 1)
 595                         newHeight = 1;
 596                 splitPanel.setHeight("" + newHeight);
 597                 inner.setHeight("" + newHeight);
 598         }
 599
 600         @Override
 601         public void onResize(ResizeEvent event) {
 602                 int height = event.getHeight();
 603                 onWindowResized(height);
 604         }
 605
 606         /**
 607          * Display an error message.
 608          *
 609          * @param msg the message to display
 610          */
 611         public void displayError(String msg) {
 612                 messagePanel.displayError(msg);
 613         }
 614
 615         /**
 616          * Display a warning message.
 617          *
 618          * @param msg the message to display
 619          */
 620         public void displayWarning(String msg) {
 621                 messagePanel.displayWarning(msg);
 622         }
 623
 624         /**
 625          * Display an informational message.
 626          *
 627          * @param msg the message to display
 628          */
 629         public void displayInformation(String msg) {
 630                 messagePanel.displayInformation(msg);
 631         }
 632
 633         /**
 634          * Retrieve the fileList.
 635          *
 636          * @return the fileList
 637          */
 638         public FileList getFileList() {
 639                 return fileList;
 640         }
 641
 642         /**
 643          * Retrieve the topPanel.
 644          *
 645          * @return the topPanel
 646          */
 647         TopPanel getTopPanel() {
 648                 return topPanel;
 649         }
 650
 651         /**
 652          * Retrieve the clipboard.
 653          *
 654          * @return the clipboard
 655          */
 656         public Clipboard getClipboard() {
 657                 return clipboard;
 658         }
 659
 660         public StatusPanel getStatusPanel() {
 661                 return statusPanel;
 662         }
 663
 664         public String getToken() {
 665                 return token;
 666         }
 667
 668         public String getWebDAVPassword() {
 669                 return webDAVPassword;
 670         }
 671
 672         public static native void preventIESelection() /*-{
 673                 $doc.body.onselectstart = function () { return false; };
 674         }-*/;
 675
 676         public static native void enableIESelection() /*-{
 677                 if ($doc.body.onselectstart != null)
 678                 $doc.body.onselectstart = null;
 679         }-*/;
 680
 681         /**
 682          * @return the absolute path of the API root URL
 683          */
 684         public String getApiPath() {
 685                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 686                 return conf.apiPath();
 687         }
 688
 689         /**
 690          * History support for folder navigation
 691          * adds a new browser history entry
 692          *
 693          * @param key
 694          */
 695         public void updateHistory(String key){
 696 //              Replace any whitespace of the initial string to "+"
 697 //              String result = key.replaceAll("\\s","+");
 698 //              Add a new browser history entry.
 699 //              History.newItem(result);
 700                 History.newItem(key);
 701         }
 702
 703     public void deleteFolder(final Folder folder) {
 704         String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + folder.getPrefix();
 705         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 706         builder.setHeader("If-Modified-Since", "0");
 707         builder.setHeader("X-Auth-Token", getToken());
 708         try {
 709             builder.sendRequest("", new RequestCallback() {
 710                 @Override
 711                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 712                     if (response.getStatusCode() == Response.SC_OK) {
 713                         JSONValue json = JSONParser.parseStrict(response.getText());
 714                         JSONArray array = json.isArray();
 715                         int i = 0;
 716                         if (array != null) {
 717                             deleteObject(folder, i, array);
 718                         }
 719                     }
 720                 }
 721
 722                 @Override
 723                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 724                     displayError("System error unable to delete folder: " + exception.getMessage());
 725                 }
 726             });
 727         }
 728         catch (RequestException e) {
 729         }
 730     }
 731
 732     public void deleteObject(final Folder folder, final int i, final JSONArray array) {
 733         if (i < array.size()) {
 734             JSONObject o = array.get(i).isObject();
 735             if (o != null && !o.containsKey("subdir")) {
 736                 JSONString name = o.get("name").isString();
 737                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 738                 DeleteRequest delete = new DeleteRequest(getApiPath(), getUsername(), path) {
 739                     @Override
 740                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 741                         deleteObject(folder, i + 1, array);
 742                     }
 743
 744                     @Override
 745                     public void onError(Throwable t) {
 746                         GWT.log("", t);
 747                         displayError("System error unable to delete folder: " + t.getMessage());
 748                     }
 749                 };
 750                 delete.setHeader("X-Auth-Token", getToken());
 751                 Scheduler.get().scheduleDeferred(delete);
 752             }
 753             else if (o != null) {
 754                 String subdir = o.get("subdir").isString().stringValue();
 755                 subdir = subdir.substring(0, subdir.length() - 1);
 756                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + subdir;
 757                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 758                 builder.setHeader("If-Modified-Since", "0");
 759                 builder.setHeader("X-Auth-Token", getToken());
 760                 try {
 761                     builder.sendRequest("", new RequestCallback() {
 762                         @Override
 763                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 764                             if (response.getStatusCode() == Response.SC_OK) {
 765                                 JSONValue json = JSONParser.parseStrict(response.getText());
 766                                 JSONArray array2 = json.isArray();
 767                                 if (array2 != null) {
 768                                     int l = array.size();
 769                                     for (int j=0; j<array2.size(); j++) {
 770                                         array.set(l++, array2.get(j));
 771                                     }
 772                                 }
 773                                 deleteObject(folder, i + 1, array);
 774                             }
 775                         }
 776
 777                         @Override
 778                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 779                             displayError("System error unable to delete folder: " + exception.getMessage());
 780                         }
 781                     });
 782                 }
 783                 catch (RequestException e) {
 784                 }
 785             }
 786         }
 787         else {
 788             String path = folder.getUri();
 789             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 790                 @Override
 791                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 792                     updateFolder(folder.getParent(), true);
 793                 }
 794
 795                 @Override
 796                 public void onError(Throwable t) {
 797                     GWT.log("", t);
 798                     if (t instanceof RestException) {
 799                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 800                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 801                         else
 802                                 onSuccess(null);
 803                     }
 804                     else
 805                         displayError("System error unable to delete folder: " + t.getMessage());
 806                 }
 807             };
 808             deleteFolder.setHeader("X-Auth-Token", getToken());
 809             Scheduler.get().scheduleDeferred(deleteFolder);
 810         }
 811     }
 812
 813     public FolderTreeView getFolderTreeView() {
 814         return folderTreeView;
 815     }
 816
 817     public void copyFiles(final Iterator<File> iter, final String targetUri, final Command callback) {
 818         if (iter.hasNext()) {
 819             File file = iter.next();
 820             String path = targetUri + "/" + file.getName();
 821             PutRequest copyFile = new PutRequest(getApiPath(), getUsername(), path) {
 822                 @Override
 823                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 824                     copyFiles(iter, targetUri, callback);
 825                 }
 826
 827                 @Override
 828                 public void onError(Throwable t) {
 829                     GWT.log("", t);
 830                     if (t instanceof RestException) {
 831                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 832                     }
 833                     else
 834                         displayError("System error unable to copy file: "+t.getMessage());
 835                 }
 836             };
 837             copyFile.setHeader("X-Auth-Token", getToken());
 838             copyFile.setHeader("X-Copy-From", file.getUri());
 839             Scheduler.get().scheduleDeferred(copyFile);
 840         }
 841         else  if (callback != null) {
 842             callback.execute();
 843         }
 844     }
 845
 846     public void copySubfolders(final Iterator<Folder> iter, final String targetUri, final Command callback) {
 847         if (iter.hasNext()) {
 848             final Folder f = iter.next();
 849             copyFolder(f, targetUri, callback);
 850         }
 851         else  if (callback != null) {
 852             callback.execute();
 853         }
 854     }
 855
 856     public void copyFolder(final Folder f, final String targetUri, final Command callback) {
 857         String path = targetUri + "/" + f.getName();
 858         PutRequest createFolder = new PutRequest(getApiPath(), getUsername(), path) {
 859             @Override
 860             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 861                 Iterator<File> iter = f.getFiles().iterator();
 862                 copyFiles(iter, targetUri + "/" + f.getName(), new Command() {
 863                     @Override
 864                     public void execute() {
 865                         Iterator<Folder> iterf = f.getSubfolders().iterator();
 866                         copySubfolders(iterf, targetUri + "/" + f.getName(), new Command() {
 867                             @Override
 868                             public void execute() {
 869                                 callback.execute();
 870                             }
 871                         });
 872                     }
 873                 });
 874             }
 875
 876             @Override
 877             public void onError(Throwable t) {
 878                 GWT.log("", t);
 879                 if (t instanceof RestException) {
 880                     displayError("Unable to create folder:" + ((RestException) t).getHttpStatusText());
 881                 }
 882                 else
 883                     displayError("System error creating folder:" + t.getMessage());
 884             }
 885         };
 886         createFolder.setHeader("X-Auth-Token", getToken());
 887         createFolder.setHeader("Accept", "*/*");
 888         createFolder.setHeader("Content-Length", "0");
 889         createFolder.setHeader("Content-Type", "application/folder");
 890         Scheduler.get().scheduleDeferred(createFolder);
 891     }
 892
 893     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
 894         selectionModels.add(model);
 895     }
 896
 897         public OtherSharedTreeView getOtherSharedTreeView() {
 898                 return otherSharedTreeView;
 899         }
 900 }