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, Command callback) {
 129         folderTreeView.updateFolder(f, showfiles, callback);
 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     private Folder trash;
 254
 255     @SuppressWarnings("rawtypes")
 256         private List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 257
 258         @Override
 259         public void onModuleLoad() {
 260                 if (parseUserCredentials())
 261             initialize();
 262         }
 263
 264     private void initialize() {
 265         VerticalPanel outer = new VerticalPanel();
 266         outer.setWidth("100%");
 267
 268         topPanel = new TopPanel(this, Pithos.images);
 269         topPanel.setWidth("100%");
 270         outer.add(topPanel);
 271
 272         messagePanel.setWidth("100%");
 273         messagePanel.setVisible(false);
 274         outer.add(messagePanel);
 275         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 276
 277
 278         // Inner contains the various lists.
 279         inner.sinkEvents(Event.ONCONTEXTMENU);
 280         inner.setWidth("100%");
 281
 282         HorizontalPanel rightside = new HorizontalPanel();
 283         rightside.addStyleName("pithos-rightSide");
 284         rightside.setSpacing(5);
 285
 286         PushButton parentButton = new PushButton(new Image(images.asc()), new ClickHandler() {
 287             @Override
 288             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 289
 290             }
 291         });
 292         parentButton.addStyleName("pithos-parentButton");
 293         rightside.add(parentButton);
 294
 295         HTML folderStatistics = new HTML("5 Files (size: 1.1GB)");
 296         folderStatistics.addStyleName("pithos-folderStatistics");
 297         rightside.add(folderStatistics);
 298         inner.add(rightside);
 299         inner.setCellHorizontalAlignment(rightside, HasHorizontalAlignment.ALIGN_RIGHT);
 300         inner.setCellVerticalAlignment(rightside, HasVerticalAlignment.ALIGN_MIDDLE);
 301         inner.setCellHeight(rightside, "60px");
 302
 303         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 304         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 305             @Override
 306             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 307                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 308                     deselectOthers(folderTreeSelectionModel);
 309                     Folder f = folderTreeSelectionModel.getSelectedObject();
 310                     updateFolder(f, true, null);
 311                 }
 312             }
 313         });
 314         selectionModels.add(folderTreeSelectionModel);
 315
 316         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 317         folderTreeView = new FolderTreeView(folderTreeViewModel);
 318
 319         fileList = new FileList(this, images, folderTreeView);
 320         inner.add(fileList);
 321
 322         mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 323         mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 324             @Override
 325             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 326                 if (mysharedTreeSelectionModel.getSelectedObject() != null) {
 327                     deselectOthers(mysharedTreeSelectionModel);
 328                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
 329                 }
 330             }
 331         });
 332         selectionModels.add(mysharedTreeSelectionModel);
 333         mysharedTreeViewModel = new MysharedTreeViewModel(this, mysharedTreeSelectionModel);
 334         mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
 335
 336         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 337         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 338             @Override
 339             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 340                 if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
 341                     deselectOthers(otherSharedTreeSelectionModel);
 342                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
 343                 }
 344             }
 345         });
 346         selectionModels.add(otherSharedTreeSelectionModel);
 347         otherSharedTreeViewModel = new OtherSharedTreeViewModel(this, otherSharedTreeSelectionModel);
 348         otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
 349
 350         tagTreeSelectionModel = new SingleSelectionModel<Tag>();
 351         tagTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 352             @Override
 353             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 354                 if (tagTreeSelectionModel.getSelectedObject() != null) {
 355                     deselectOthers(tagTreeSelectionModel);
 356                     Tag t = tagTreeSelectionModel.getSelectedObject();
 357                     updateTag(t);
 358                 }
 359             }
 360         });
 361         selectionModels.add(tagTreeSelectionModel);
 362         tagTreeViewModel = new TagTreeViewModel(this, tagTreeSelectionModel);
 363         tagTreeView = new TagTreeView(tagTreeViewModel);
 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         // Add the left and right panels to the split panel.
 386         splitPanel.setLeftWidget(trees);
 387         splitPanel.setRightWidget(inner);
 388         splitPanel.setSplitPosition("25%");
 389         splitPanel.setSize("100%", "100%");
 390         splitPanel.addStyleName("pithos-splitPanel");
 391         outer.add(splitPanel);
 392
 393         statusPanel = new StatusPanel();
 394         outer.add(statusPanel);
 395
 396
 397         // Hook the window resize event, so that we can adjust the UI.
 398         Window.addResizeHandler(this);
 399         // Clear out the window's built-in margin, because we want to take
 400         // advantage of the entire client area.
 401         Window.setMargin("0px");
 402         // Finally, add the outer panel to the RootPanel, so that it will be
 403         // displayed.
 404         RootPanel.get().add(outer);
 405         // Call the window resized handler to get the initial sizes setup. Doing
 406         // this in a deferred command causes it to occur after all widgets'
 407         // sizes have been computed by the browser.
 408         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 409
 410             @Override
 411             public void execute() {
 412                 onWindowResized(Window.getClientHeight());
 413             }
 414         });
 415
 416         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 417             @Override
 418             public void execute() {
 419                 fetchAccount();
 420             }
 421         });
 422     }
 423
 424     @SuppressWarnings({ "rawtypes", "unchecked" })
 425         public void deselectOthers(SingleSelectionModel model) {
 426         for (SingleSelectionModel s : selectionModels)
 427             if (!s.equals(model))
 428                 s.setSelected(s.getSelectedObject(), false);
 429     }
 430
 431     public void showFiles(Folder f) {
 432         Set<File> files = f.getFiles();
 433         showFiles(files);
 434     }
 435
 436     public void showFiles(Set<File> files) {
 437         //Iterator<File> iter = files.iterator();
 438         //fetchFile(iter, files);
 439         fileList.setFiles(new ArrayList<File>(files));
 440     }
 441
 442     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 443         if (iter.hasNext()) {
 444             File file = iter.next();
 445             String path = file.getUri() + "?format=json";
 446             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 447                 @Override
 448                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 449                     fetchFile(iter, files);
 450                 }
 451
 452                 @Override
 453                 public void onError(Throwable t) {
 454                     GWT.log("Error getting file", t);
 455                     if (t instanceof RestException)
 456                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 457                     else
 458                         displayError("System error fetching file: " + t.getMessage());
 459                 }
 460             };
 461             getFile.setHeader("X-Auth-Token", "0000");
 462             Scheduler.get().scheduleDeferred(getFile);
 463         }
 464         else
 465             fileList.setFiles(new ArrayList<File>(files));
 466     }
 467
 468     /**
 469          * Parse and store the user credentials to the appropriate fields.
 470          */
 471         private boolean parseUserCredentials() {
 472         username = Window.Location.getParameter("user");
 473         token = Window.Location.getParameter("token");
 474         Configuration conf = (Configuration) GWT.create(Configuration.class);
 475         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 476             String cookie = conf.authCookie();
 477             String auth = Cookies.getCookie(cookie);
 478             if (auth == null) {
 479                 authenticateUser();
 480                 return false;
 481             }
 482                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 483                         if (authSplit.length != 2) {
 484                             authenticateUser();
 485                             return false;
 486                         }
 487                         username = authSplit[0];
 488                         token = authSplit[1];
 489                         return true;
 490         }
 491                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
 492                 return true;
 493     }
 494
 495     /**
 496          * Redirect the user to the login page for authentication.
 497          */
 498         protected void authenticateUser() {
 499                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 500         Window.Location.assign(Window.Location.getHost() + conf.loginUrl() + "?next=" + Window.Location.getHref());
 501         }
 502
 503         protected void fetchAccount() {
 504         String path = "?format=json";
 505
 506         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 507             @Override
 508             public void onSuccess(AccountResource _result) {
 509                 account = _result;
 510                 if (!account.hasHomeContainer())
 511                     createHomeContainer(account);
 512                 else if (!account.hasTrashContainer())
 513                         createTrashContainer();
 514                 else {
 515                         for (Folder f : account.getContainers())
 516                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 517                                         trash = f;
 518                                         break;
 519                                 }
 520                     folderTreeViewModel.initialize(account);
 521                 }
 522             }
 523
 524             @Override
 525             public void onError(Throwable t) {
 526                 GWT.log("Error getting account", t);
 527                 if (t instanceof RestException)
 528                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 529                 else
 530                     displayError("System error fetching user data: " + t.getMessage());
 531             }
 532         };
 533         getAccount.setHeader("X-Auth-Token", token);
 534         Scheduler.get().scheduleDeferred(getAccount);
 535     }
 536
 537     protected void createHomeContainer(final AccountResource account) {
 538         String path = "/" + Pithos.HOME_CONTAINER;
 539         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 540             @Override
 541             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 542                 if (!account.hasTrashContainer())
 543                         createTrashContainer();
 544                 else
 545                         fetchAccount();
 546             }
 547
 548             @Override
 549             public void onError(Throwable t) {
 550                 GWT.log("Error creating pithos", t);
 551                 if (t instanceof RestException)
 552                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 553                 else
 554                     displayError("System error Error creating pithos: " + t.getMessage());
 555             }
 556         };
 557         createPithos.setHeader("X-Auth-Token", getToken());
 558         Scheduler.get().scheduleDeferred(createPithos);
 559     }
 560
 561     protected void createTrashContainer() {
 562         String path = "/" + Pithos.TRASH_CONTAINER;
 563         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 564             @Override
 565             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 566                         fetchAccount();
 567             }
 568
 569             @Override
 570             public void onError(Throwable t) {
 571                 GWT.log("Error creating pithos", t);
 572                 if (t instanceof RestException)
 573                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 574                 else
 575                     displayError("System error Error creating pithos: " + t.getMessage());
 576             }
 577         };
 578         createPithos.setHeader("X-Auth-Token", getToken());
 579         Scheduler.get().scheduleDeferred(createPithos);
 580     }
 581
 582     /**
 583          * Creates an HTML fragment that places an image & caption together, for use
 584          * in a group header.
 585          *
 586          * @param imageProto an image prototype for an image
 587          * @param caption the group caption
 588          * @return the header HTML fragment
 589          */
 590         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 591                 String captionHTML = "<table class='caption' cellpadding='0' "
 592                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 593                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 594                 + caption + "</b></td></tr></table>";
 595                 return captionHTML;
 596         }
 597
 598         protected void onWindowResized(int height) {
 599                 // Adjust the split panel to take up the available room in the window.
 600                 int newHeight = height - splitPanel.getAbsoluteTop() - 60;
 601                 if (newHeight < 1)
 602                         newHeight = 1;
 603                 splitPanel.setHeight("" + newHeight);
 604                 inner.setHeight("" + newHeight);
 605         }
 606
 607         @Override
 608         public void onResize(ResizeEvent event) {
 609                 int height = event.getHeight();
 610                 onWindowResized(height);
 611         }
 612
 613         /**
 614          * Display an error message.
 615          *
 616          * @param msg the message to display
 617          */
 618         public void displayError(String msg) {
 619                 messagePanel.displayError(msg);
 620         }
 621
 622         /**
 623          * Display a warning message.
 624          *
 625          * @param msg the message to display
 626          */
 627         public void displayWarning(String msg) {
 628                 messagePanel.displayWarning(msg);
 629         }
 630
 631         /**
 632          * Display an informational message.
 633          *
 634          * @param msg the message to display
 635          */
 636         public void displayInformation(String msg) {
 637                 messagePanel.displayInformation(msg);
 638         }
 639
 640         /**
 641          * Retrieve the fileList.
 642          *
 643          * @return the fileList
 644          */
 645         public FileList getFileList() {
 646                 return fileList;
 647         }
 648
 649         /**
 650          * Retrieve the topPanel.
 651          *
 652          * @return the topPanel
 653          */
 654         TopPanel getTopPanel() {
 655                 return topPanel;
 656         }
 657
 658         /**
 659          * Retrieve the clipboard.
 660          *
 661          * @return the clipboard
 662          */
 663         public Clipboard getClipboard() {
 664                 return clipboard;
 665         }
 666
 667         public StatusPanel getStatusPanel() {
 668                 return statusPanel;
 669         }
 670
 671         public String getToken() {
 672                 return token;
 673         }
 674
 675         public String getWebDAVPassword() {
 676                 return webDAVPassword;
 677         }
 678
 679         public static native void preventIESelection() /*-{
 680                 $doc.body.onselectstart = function () { return false; };
 681         }-*/;
 682
 683         public static native void enableIESelection() /*-{
 684                 if ($doc.body.onselectstart != null)
 685                 $doc.body.onselectstart = null;
 686         }-*/;
 687
 688         /**
 689          * @return the absolute path of the API root URL
 690          */
 691         public String getApiPath() {
 692                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 693                 return conf.apiPath();
 694         }
 695
 696         /**
 697          * History support for folder navigation
 698          * adds a new browser history entry
 699          *
 700          * @param key
 701          */
 702         public void updateHistory(String key){
 703 //              Replace any whitespace of the initial string to "+"
 704 //              String result = key.replaceAll("\\s","+");
 705 //              Add a new browser history entry.
 706 //              History.newItem(result);
 707                 History.newItem(key);
 708         }
 709
 710     public void deleteFolder(final Folder folder) {
 711         String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + folder.getPrefix();
 712         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 713         builder.setHeader("If-Modified-Since", "0");
 714         builder.setHeader("X-Auth-Token", getToken());
 715         try {
 716             builder.sendRequest("", new RequestCallback() {
 717                 @Override
 718                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 719                     if (response.getStatusCode() == Response.SC_OK) {
 720                         JSONValue json = JSONParser.parseStrict(response.getText());
 721                         JSONArray array = json.isArray();
 722                         int i = 0;
 723                         if (array != null) {
 724                             deleteObject(folder, i, array);
 725                         }
 726                     }
 727                 }
 728
 729                 @Override
 730                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 731                     displayError("System error unable to delete folder: " + exception.getMessage());
 732                 }
 733             });
 734         }
 735         catch (RequestException e) {
 736         }
 737     }
 738
 739     public void deleteObject(final Folder folder, final int i, final JSONArray array) {
 740         if (i < array.size()) {
 741             JSONObject o = array.get(i).isObject();
 742             if (o != null && !o.containsKey("subdir")) {
 743                 JSONString name = o.get("name").isString();
 744                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 745                 DeleteRequest delete = new DeleteRequest(getApiPath(), getUsername(), path) {
 746                     @Override
 747                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 748                         deleteObject(folder, i + 1, array);
 749                     }
 750
 751                     @Override
 752                     public void onError(Throwable t) {
 753                         GWT.log("", t);
 754                         displayError("System error unable to delete folder: " + t.getMessage());
 755                     }
 756                 };
 757                 delete.setHeader("X-Auth-Token", getToken());
 758                 Scheduler.get().scheduleDeferred(delete);
 759             }
 760             else if (o != null) {
 761                 String subdir = o.get("subdir").isString().stringValue();
 762                 subdir = subdir.substring(0, subdir.length() - 1);
 763                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + subdir;
 764                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 765                 builder.setHeader("If-Modified-Since", "0");
 766                 builder.setHeader("X-Auth-Token", getToken());
 767                 try {
 768                     builder.sendRequest("", new RequestCallback() {
 769                         @Override
 770                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 771                             if (response.getStatusCode() == Response.SC_OK) {
 772                                 JSONValue json = JSONParser.parseStrict(response.getText());
 773                                 JSONArray array2 = json.isArray();
 774                                 if (array2 != null) {
 775                                     int l = array.size();
 776                                     for (int j=0; j<array2.size(); j++) {
 777                                         array.set(l++, array2.get(j));
 778                                     }
 779                                 }
 780                                 deleteObject(folder, i + 1, array);
 781                             }
 782                         }
 783
 784                         @Override
 785                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 786                             displayError("System error unable to delete folder: " + exception.getMessage());
 787                         }
 788                     });
 789                 }
 790                 catch (RequestException e) {
 791                 }
 792             }
 793         }
 794         else {
 795             String path = folder.getUri();
 796             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 797                 @Override
 798                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 799                     updateFolder(folder.getParent(), true, null);
 800                 }
 801
 802                 @Override
 803                 public void onError(Throwable t) {
 804                     GWT.log("", t);
 805                     if (t instanceof RestException) {
 806                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 807                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 808                         else
 809                                 onSuccess(null);
 810                     }
 811                     else
 812                         displayError("System error unable to delete folder: " + t.getMessage());
 813                 }
 814             };
 815             deleteFolder.setHeader("X-Auth-Token", getToken());
 816             Scheduler.get().scheduleDeferred(deleteFolder);
 817         }
 818     }
 819
 820     public FolderTreeView getFolderTreeView() {
 821         return folderTreeView;
 822     }
 823
 824     public void copyFiles(final Iterator<File> iter, final String targetUri, final Command callback) {
 825         if (iter.hasNext()) {
 826             File file = iter.next();
 827             String path = targetUri + "/" + file.getName();
 828             PutRequest copyFile = new PutRequest(getApiPath(), getUsername(), path) {
 829                 @Override
 830                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 831                     copyFiles(iter, targetUri, callback);
 832                 }
 833
 834                 @Override
 835                 public void onError(Throwable t) {
 836                     GWT.log("", t);
 837                     if (t instanceof RestException) {
 838                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 839                     }
 840                     else
 841                         displayError("System error unable to copy file: "+t.getMessage());
 842                 }
 843             };
 844             copyFile.setHeader("X-Auth-Token", getToken());
 845             copyFile.setHeader("X-Copy-From", file.getUri());
 846             Scheduler.get().scheduleDeferred(copyFile);
 847         }
 848         else  if (callback != null) {
 849             callback.execute();
 850         }
 851     }
 852
 853     public void copySubfolders(final Iterator<Folder> iter, final String targetUri, final Command callback) {
 854         if (iter.hasNext()) {
 855             final Folder f = iter.next();
 856             copyFolder(f, targetUri, callback);
 857         }
 858         else  if (callback != null) {
 859             callback.execute();
 860         }
 861     }
 862
 863     public void copyFolder(final Folder f, final String targetUri, final Command callback) {
 864         String path = targetUri + "/" + f.getName();
 865         PutRequest createFolder = new PutRequest(getApiPath(), getUsername(), path) {
 866             @Override
 867             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 868                 Iterator<File> iter = f.getFiles().iterator();
 869                 copyFiles(iter, targetUri + "/" + f.getName(), new Command() {
 870                     @Override
 871                     public void execute() {
 872                         Iterator<Folder> iterf = f.getSubfolders().iterator();
 873                         copySubfolders(iterf, targetUri + "/" + f.getName(), new Command() {
 874                             @Override
 875                             public void execute() {
 876                                 callback.execute();
 877                             }
 878                         });
 879                     }
 880                 });
 881             }
 882
 883             @Override
 884             public void onError(Throwable t) {
 885                 GWT.log("", t);
 886                 if (t instanceof RestException) {
 887                     displayError("Unable to create folder:" + ((RestException) t).getHttpStatusText());
 888                 }
 889                 else
 890                     displayError("System error creating folder:" + t.getMessage());
 891             }
 892         };
 893         createFolder.setHeader("X-Auth-Token", getToken());
 894         createFolder.setHeader("Accept", "*/*");
 895         createFolder.setHeader("Content-Length", "0");
 896         createFolder.setHeader("Content-Type", "application/folder");
 897         Scheduler.get().scheduleDeferred(createFolder);
 898     }
 899
 900     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
 901         selectionModels.add(model);
 902     }
 903
 904         public OtherSharedTreeView getOtherSharedTreeView() {
 905                 return otherSharedTreeView;
 906         }
 907
 908         public void updateTrash(boolean showFiles, Command callback) {
 909                 updateFolder(trash, showFiles, callback);
 910         }
 911 }