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