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.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         @Override
 273         public void onModuleLoad() {
 274                 if (parseUserCredentials())
 275             initialize();
 276         }
 277
 278     private void initialize() {
 279         VerticalPanel outer = new VerticalPanel();
 280         outer.setWidth("100%");
 281
 282         topPanel = new TopPanel(this, Pithos.images);
 283         topPanel.setWidth("100%");
 284         outer.add(topPanel);
 285
 286         messagePanel.setWidth("100%");
 287         messagePanel.setVisible(false);
 288         outer.add(messagePanel);
 289         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 290
 291
 292         // Inner contains the various lists.
 293         inner.sinkEvents(Event.ONCONTEXTMENU);
 294         inner.setWidth("100%");
 295
 296         HorizontalPanel rightside = new HorizontalPanel();
 297         rightside.addStyleName("pithos-rightSide");
 298         rightside.setSpacing(5);
 299
 300         HTML folderStatistics = new HTML("5 Files (size: 1.1GB)");
 301         folderStatistics.addStyleName("pithos-folderStatistics");
 302         rightside.add(folderStatistics);
 303         inner.add(rightside);
 304         inner.setCellHorizontalAlignment(rightside, HasHorizontalAlignment.ALIGN_RIGHT);
 305         inner.setCellVerticalAlignment(rightside, HasVerticalAlignment.ALIGN_MIDDLE);
 306         inner.setCellHeight(rightside, "60px");
 307
 308         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 309         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 310             @Override
 311             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 312                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 313                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 314                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 315                     Folder f = folderTreeSelectionModel.getSelectedObject();
 316                     updateFolder(f, true, null);
 317                 }
 318             }
 319         });
 320         selectionModels.add(folderTreeSelectionModel);
 321
 322         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 323         folderTreeView = new FolderTreeView(folderTreeViewModel);
 324
 325         fileList = new FileList(this, images, folderTreeView);
 326         inner.add(fileList);
 327
 328         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 329         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 330             @Override
 331             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 332                 if (mysharedTreeSelectionModel.getSelectedObject() != null) {
 333                     deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
 334                     upload.setEnabled(false);
 335                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
 336                 }
 337             }
 338         });
 339         selectionModels.add(mysharedTreeSelectionModel);
 340         mysharedTreeViewModel = new MysharedTreeViewModel(this, mysharedTreeSelectionModel);
 341         mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
 342
 343         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 344         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 345             @Override
 346             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 347                 if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
 348                     deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
 349                     applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
 350                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
 351                 }
 352             }
 353         });
 354         selectionModels.add(otherSharedTreeSelectionModel);
 355         otherSharedTreeViewModel = new OtherSharedTreeViewModel(this, otherSharedTreeSelectionModel);
 356         otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
 357
 358         groupTreeViewModel = new GroupTreeViewModel(this);
 359         groupTreeView = new GroupTreeView(groupTreeViewModel);
 360
 361         VerticalPanel trees = new VerticalPanel();
 362
 363         upload = new Button("Upload File", new ClickHandler() {
 364             @Override
 365             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 366                 new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 367             }
 368         });
 369         upload.addStyleName("pithos-uploadButton");
 370         trees.add(upload);
 371
 372         HorizontalPanel treeHeader = new HorizontalPanel();
 373         treeHeader.addStyleName("pithos-treeHeader");
 374         treeHeader.add(new HTML("Total Files: 6 | Used: 2.1 of 50 GB (4.2%)"));
 375         trees.add(treeHeader);
 376
 377         trees.add(folderTreeView);
 378         trees.add(mysharedTreeView);
 379         trees.add(otherSharedTreeView);
 380 //        trees.add(tagTreeView);
 381         trees.add(groupTreeView);
 382         // Add the left and right panels to the split panel.
 383         splitPanel.setLeftWidget(trees);
 384         splitPanel.setRightWidget(inner);
 385         splitPanel.setSplitPosition("25%");
 386         splitPanel.setSize("100%", "100%");
 387         splitPanel.addStyleName("pithos-splitPanel");
 388         outer.add(splitPanel);
 389
 390         statusPanel = new StatusPanel();
 391         outer.add(statusPanel);
 392
 393
 394         // Hook the window resize event, so that we can adjust the UI.
 395         Window.addResizeHandler(this);
 396         // Clear out the window's built-in margin, because we want to take
 397         // advantage of the entire client area.
 398         Window.setMargin("0px");
 399         // Finally, add the outer panel to the RootPanel, so that it will be
 400         // displayed.
 401         RootPanel.get().add(outer);
 402         // Call the window resized handler to get the initial sizes setup. Doing
 403         // this in a deferred command causes it to occur after all widgets'
 404         // sizes have been computed by the browser.
 405         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 406
 407             @Override
 408             public void execute() {
 409                 onWindowResized(Window.getClientHeight());
 410             }
 411         });
 412
 413         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 414             @Override
 415             public void execute() {
 416                 fetchAccount();
 417             }
 418         });
 419     }
 420
 421     public void applyPermissions(Folder f) {
 422         if (f != null) {
 423                 if (f.isInTrash())
 424                         upload.setEnabled(false);
 425                 else {
 426                         Boolean[] perms = f.getPermissions().get(username);
 427                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 428                                 upload.setEnabled(true);
 429                         }
 430                         else
 431                                 upload.setEnabled(false);
 432                 }
 433         }
 434         else
 435                 upload.setEnabled(false);
 436         }
 437
 438         @SuppressWarnings({ "rawtypes", "unchecked" })
 439         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 440         selectedTree = _selectedTree;
 441         for (SingleSelectionModel s : selectionModels)
 442             if (!s.equals(model))
 443                 s.setSelected(s.getSelectedObject(), false);
 444     }
 445
 446     public void showFiles(Folder f) {
 447         Set<File> files = f.getFiles();
 448         showFiles(files);
 449     }
 450
 451     public void showFiles(Set<File> files) {
 452         //Iterator<File> iter = files.iterator();
 453         //fetchFile(iter, files);
 454         fileList.setFiles(new ArrayList<File>(files));
 455     }
 456
 457     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 458         if (iter.hasNext()) {
 459             File file = iter.next();
 460             String path = file.getUri() + "?format=json";
 461             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 462                 @Override
 463                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 464                     fetchFile(iter, files);
 465                 }
 466
 467                 @Override
 468                 public void onError(Throwable t) {
 469                     GWT.log("Error getting file", t);
 470                     if (t instanceof RestException)
 471                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 472                     else
 473                         displayError("System error fetching file: " + t.getMessage());
 474                 }
 475             };
 476             getFile.setHeader("X-Auth-Token", "0000");
 477             Scheduler.get().scheduleDeferred(getFile);
 478         }
 479         else
 480             fileList.setFiles(new ArrayList<File>(files));
 481     }
 482
 483     /**
 484          * Parse and store the user credentials to the appropriate fields.
 485          */
 486         private boolean parseUserCredentials() {
 487         username = Window.Location.getParameter("user");
 488         token = Window.Location.getParameter("token");
 489         Configuration conf = (Configuration) GWT.create(Configuration.class);
 490         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 491             String cookie = conf.authCookie();
 492             String auth = Cookies.getCookie(cookie);
 493             if (auth == null) {
 494                 authenticateUser();
 495                 return false;
 496             }
 497                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 498                         if (authSplit.length != 2) {
 499                             authenticateUser();
 500                             return false;
 501                         }
 502                         username = authSplit[0];
 503                         token = authSplit[1];
 504                         return true;
 505         }
 506                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
 507                 return true;
 508     }
 509
 510     /**
 511          * Redirect the user to the login page for authentication.
 512          */
 513         protected void authenticateUser() {
 514                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 515         Window.Location.assign(conf.loginUrl() + "?next=" + Window.Location.getHref());
 516         }
 517
 518         protected void fetchAccount() {
 519         String path = "?format=json";
 520
 521         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 522             @Override
 523             public void onSuccess(AccountResource _result) {
 524                 account = _result;
 525                 if (!account.hasHomeContainer())
 526                     createHomeContainer(account);
 527                 else if (!account.hasTrashContainer())
 528                         createTrashContainer();
 529                 else {
 530                         for (Folder f : account.getContainers())
 531                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 532                                         trash = f;
 533                                         break;
 534                                 }
 535                     folderTreeViewModel.initialize(account);
 536                     groupTreeViewModel.initialize();
 537                 }
 538             }
 539
 540             @Override
 541             public void onError(Throwable t) {
 542                 GWT.log("Error getting account", t);
 543                 if (t instanceof RestException)
 544                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 545                 else
 546                     displayError("System error fetching user data: " + t.getMessage());
 547             }
 548         };
 549         getAccount.setHeader("X-Auth-Token", token);
 550         Scheduler.get().scheduleDeferred(getAccount);
 551     }
 552
 553     protected void createHomeContainer(final AccountResource account) {
 554         String path = "/" + Pithos.HOME_CONTAINER;
 555         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 556             @Override
 557             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 558                 if (!account.hasTrashContainer())
 559                         createTrashContainer();
 560                 else
 561                         fetchAccount();
 562             }
 563
 564             @Override
 565             public void onError(Throwable t) {
 566                 GWT.log("Error creating pithos", t);
 567                 if (t instanceof RestException)
 568                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 569                 else
 570                     displayError("System error Error creating pithos: " + t.getMessage());
 571             }
 572         };
 573         createPithos.setHeader("X-Auth-Token", getToken());
 574         Scheduler.get().scheduleDeferred(createPithos);
 575     }
 576
 577     protected void createTrashContainer() {
 578         String path = "/" + Pithos.TRASH_CONTAINER;
 579         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 580             @Override
 581             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 582                         fetchAccount();
 583             }
 584
 585             @Override
 586             public void onError(Throwable t) {
 587                 GWT.log("Error creating pithos", t);
 588                 if (t instanceof RestException)
 589                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 590                 else
 591                     displayError("System error Error creating pithos: " + t.getMessage());
 592             }
 593         };
 594         createPithos.setHeader("X-Auth-Token", getToken());
 595         Scheduler.get().scheduleDeferred(createPithos);
 596     }
 597
 598     /**
 599          * Creates an HTML fragment that places an image & caption together, for use
 600          * in a group header.
 601          *
 602          * @param imageProto an image prototype for an image
 603          * @param caption the group caption
 604          * @return the header HTML fragment
 605          */
 606         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 607                 String captionHTML = "<table class='caption' cellpadding='0' "
 608                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 609                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 610                 + caption + "</b></td></tr></table>";
 611                 return captionHTML;
 612         }
 613
 614         protected void onWindowResized(int height) {
 615                 // Adjust the split panel to take up the available room in the window.
 616                 int newHeight = height - splitPanel.getAbsoluteTop() - 60;
 617                 if (newHeight < 1)
 618                         newHeight = 1;
 619                 splitPanel.setHeight("" + newHeight);
 620                 inner.setHeight("" + newHeight);
 621         }
 622
 623         @Override
 624         public void onResize(ResizeEvent event) {
 625                 int height = event.getHeight();
 626                 onWindowResized(height);
 627         }
 628
 629         /**
 630          * Display an error message.
 631          *
 632          * @param msg the message to display
 633          */
 634         public void displayError(String msg) {
 635                 messagePanel.displayError(msg);
 636         }
 637
 638         /**
 639          * Display a warning message.
 640          *
 641          * @param msg the message to display
 642          */
 643         public void displayWarning(String msg) {
 644                 messagePanel.displayWarning(msg);
 645         }
 646
 647         /**
 648          * Display an informational message.
 649          *
 650          * @param msg the message to display
 651          */
 652         public void displayInformation(String msg) {
 653                 messagePanel.displayInformation(msg);
 654         }
 655
 656         /**
 657          * Retrieve the fileList.
 658          *
 659          * @return the fileList
 660          */
 661         public FileList getFileList() {
 662                 return fileList;
 663         }
 664
 665         /**
 666          * Retrieve the topPanel.
 667          *
 668          * @return the topPanel
 669          */
 670         TopPanel getTopPanel() {
 671                 return topPanel;
 672         }
 673
 674         /**
 675          * Retrieve the clipboard.
 676          *
 677          * @return the clipboard
 678          */
 679         public Clipboard getClipboard() {
 680                 return clipboard;
 681         }
 682
 683         public StatusPanel getStatusPanel() {
 684                 return statusPanel;
 685         }
 686
 687         public String getToken() {
 688                 return token;
 689         }
 690
 691         public String getWebDAVPassword() {
 692                 return webDAVPassword;
 693         }
 694
 695         public static native void preventIESelection() /*-{
 696                 $doc.body.onselectstart = function () { return false; };
 697         }-*/;
 698
 699         public static native void enableIESelection() /*-{
 700                 if ($doc.body.onselectstart != null)
 701                 $doc.body.onselectstart = null;
 702         }-*/;
 703
 704         /**
 705          * @return the absolute path of the API root URL
 706          */
 707         public String getApiPath() {
 708                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 709                 return conf.apiPath();
 710         }
 711
 712         /**
 713          * History support for folder navigation
 714          * adds a new browser history entry
 715          *
 716          * @param key
 717          */
 718         public void updateHistory(String key){
 719 //              Replace any whitespace of the initial string to "+"
 720 //              String result = key.replaceAll("\\s","+");
 721 //              Add a new browser history entry.
 722 //              History.newItem(result);
 723                 History.newItem(key);
 724         }
 725
 726     public void deleteFolder(final Folder folder) {
 727         String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + folder.getPrefix();
 728         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 729         builder.setHeader("If-Modified-Since", "0");
 730         builder.setHeader("X-Auth-Token", getToken());
 731         try {
 732             builder.sendRequest("", new RequestCallback() {
 733                 @Override
 734                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 735                     if (response.getStatusCode() == Response.SC_OK) {
 736                         JSONValue json = JSONParser.parseStrict(response.getText());
 737                         JSONArray array = json.isArray();
 738                         int i = 0;
 739                         if (array != null) {
 740                             deleteObject(folder, i, array);
 741                         }
 742                     }
 743                 }
 744
 745                 @Override
 746                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 747                     displayError("System error unable to delete folder: " + exception.getMessage());
 748                 }
 749             });
 750         }
 751         catch (RequestException e) {
 752         }
 753     }
 754
 755     public void deleteObject(final Folder folder, final int i, final JSONArray array) {
 756         if (i < array.size()) {
 757             JSONObject o = array.get(i).isObject();
 758             if (o != null && !o.containsKey("subdir")) {
 759                 JSONString name = o.get("name").isString();
 760                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 761                 DeleteRequest delete = new DeleteRequest(getApiPath(), getUsername(), path) {
 762                     @Override
 763                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 764                         deleteObject(folder, i + 1, array);
 765                     }
 766
 767                     @Override
 768                     public void onError(Throwable t) {
 769                         GWT.log("", t);
 770                         displayError("System error unable to delete folder: " + t.getMessage());
 771                     }
 772                 };
 773                 delete.setHeader("X-Auth-Token", getToken());
 774                 Scheduler.get().scheduleDeferred(delete);
 775             }
 776             else if (o != null) {
 777                 String subdir = o.get("subdir").isString().stringValue();
 778                 subdir = subdir.substring(0, subdir.length() - 1);
 779                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + subdir;
 780                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 781                 builder.setHeader("If-Modified-Since", "0");
 782                 builder.setHeader("X-Auth-Token", getToken());
 783                 try {
 784                     builder.sendRequest("", new RequestCallback() {
 785                         @Override
 786                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 787                             if (response.getStatusCode() == Response.SC_OK) {
 788                                 JSONValue json = JSONParser.parseStrict(response.getText());
 789                                 JSONArray array2 = json.isArray();
 790                                 if (array2 != null) {
 791                                     int l = array.size();
 792                                     for (int j=0; j<array2.size(); j++) {
 793                                         array.set(l++, array2.get(j));
 794                                     }
 795                                 }
 796                                 deleteObject(folder, i + 1, array);
 797                             }
 798                         }
 799
 800                         @Override
 801                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 802                             displayError("System error unable to delete folder: " + exception.getMessage());
 803                         }
 804                     });
 805                 }
 806                 catch (RequestException e) {
 807                 }
 808             }
 809         }
 810         else {
 811             String path = folder.getUri();
 812             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 813                 @Override
 814                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 815                     updateFolder(folder.getParent(), true, null);
 816                 }
 817
 818                 @Override
 819                 public void onError(Throwable t) {
 820                     GWT.log("", t);
 821                     if (t instanceof RestException) {
 822                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 823                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 824                         else
 825                                 onSuccess(null);
 826                     }
 827                     else
 828                         displayError("System error unable to delete folder: " + t.getMessage());
 829                 }
 830             };
 831             deleteFolder.setHeader("X-Auth-Token", getToken());
 832             Scheduler.get().scheduleDeferred(deleteFolder);
 833         }
 834     }
 835
 836     public FolderTreeView getFolderTreeView() {
 837         return folderTreeView;
 838     }
 839
 840     public void copyFiles(final Iterator<File> iter, final String targetUri, final Command callback) {
 841         if (iter.hasNext()) {
 842             File file = iter.next();
 843             String path = targetUri + "/" + file.getName();
 844             PutRequest copyFile = new PutRequest(getApiPath(), getUsername(), path) {
 845                 @Override
 846                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 847                     copyFiles(iter, targetUri, callback);
 848                 }
 849
 850                 @Override
 851                 public void onError(Throwable t) {
 852                     GWT.log("", t);
 853                     if (t instanceof RestException) {
 854                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 855                     }
 856                     else
 857                         displayError("System error unable to copy file: "+t.getMessage());
 858                 }
 859             };
 860             copyFile.setHeader("X-Auth-Token", getToken());
 861             copyFile.setHeader("X-Copy-From", file.getUri());
 862             Scheduler.get().scheduleDeferred(copyFile);
 863         }
 864         else  if (callback != null) {
 865             callback.execute();
 866         }
 867     }
 868
 869     public void copySubfolders(final Iterator<Folder> iter, final String targetUri, final Command callback) {
 870         if (iter.hasNext()) {
 871             final Folder f = iter.next();
 872             copyFolder(f, targetUri, callback);
 873         }
 874         else  if (callback != null) {
 875             callback.execute();
 876         }
 877     }
 878
 879     public void copyFolder(final Folder f, final String targetUri, final Command callback) {
 880         String path = targetUri + "/" + f.getName();
 881         PutRequest createFolder = new PutRequest(getApiPath(), getUsername(), path) {
 882             @Override
 883             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 884                 Iterator<File> iter = f.getFiles().iterator();
 885                 copyFiles(iter, targetUri + "/" + f.getName(), new Command() {
 886                     @Override
 887                     public void execute() {
 888                         Iterator<Folder> iterf = f.getSubfolders().iterator();
 889                         copySubfolders(iterf, targetUri + "/" + f.getName(), new Command() {
 890                             @Override
 891                             public void execute() {
 892                                 callback.execute();
 893                             }
 894                         });
 895                     }
 896                 });
 897             }
 898
 899             @Override
 900             public void onError(Throwable t) {
 901                 GWT.log("", t);
 902                 if (t instanceof RestException) {
 903                     displayError("Unable to create folder:" + ((RestException) t).getHttpStatusText());
 904                 }
 905                 else
 906                     displayError("System error creating folder:" + t.getMessage());
 907             }
 908         };
 909         createFolder.setHeader("X-Auth-Token", getToken());
 910         createFolder.setHeader("Accept", "*/*");
 911         createFolder.setHeader("Content-Length", "0");
 912         createFolder.setHeader("Content-Type", "application/folder");
 913         Scheduler.get().scheduleDeferred(createFolder);
 914     }
 915
 916     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
 917         selectionModels.add(model);
 918     }
 919
 920         public OtherSharedTreeView getOtherSharedTreeView() {
 921                 return otherSharedTreeView;
 922         }
 923
 924         public void updateTrash(boolean showFiles, Command callback) {
 925                 updateFolder(trash, showFiles, callback);
 926         }
 927
 928         public void updateGroupsNode() {
 929                 groupTreeView.updateGroupNode(null);
 930         }
 931
 932         public void addGroup(String groupname) {
 933                 Group newGroup = new Group(groupname);
 934                 account.addGroup(newGroup);
 935                 groupTreeView.updateGroupNode(null);
 936         }
 937
 938         public void removeGroup(Group group) {
 939                 account.removeGroup(group);
 940                 updateGroupsNode();
 941         }
 942
 943         public TreeView getSelectedTree() {
 944                 return selectedTree;
 945         }
 946
 947         public Folder getSelection() {
 948                 return selectedTree.getSelection();
 949         }
 950 }