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 com.google.gwt.core.client.Scheduler;
  38 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  39 import com.google.gwt.event.dom.client.ClickEvent;
  40 import com.google.gwt.event.dom.client.ClickHandler;
  41 import com.google.gwt.http.client.Request;
  42 import com.google.gwt.http.client.RequestBuilder;
  43 import com.google.gwt.http.client.RequestCallback;
  44 import com.google.gwt.http.client.RequestException;
  45 import com.google.gwt.http.client.Response;
  46 import com.google.gwt.json.client.JSONArray;
  47 import com.google.gwt.json.client.JSONObject;
  48 import com.google.gwt.json.client.JSONParser;
  49 import com.google.gwt.json.client.JSONString;
  50 import com.google.gwt.json.client.JSONValue;
  51 import com.google.gwt.user.client.Command;
  52 import com.google.gwt.user.client.ui.Button;
  53 import com.google.gwt.user.client.ui.HTML;
  54 import com.google.gwt.user.client.ui.HasHorizontalAlignment.HorizontalAlignmentConstant;
  55 import com.google.gwt.user.client.ui.HasVerticalAlignment;
  56 import com.google.gwt.user.client.ui.HorizontalPanel;
  57 import com.google.gwt.user.client.ui.Image;
  58 import com.google.gwt.user.client.ui.PushButton;
  59 import com.google.gwt.view.client.SelectionChangeEvent;
  60 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
  61 import com.google.gwt.view.client.SelectionModel;
  62 import com.google.gwt.view.client.SingleSelectionModel;
  63 import com.google.gwt.view.client.TreeViewModel;
  64 import gr.grnet.pithos.web.client.commands.UploadFileCommand;
  65 import gr.grnet.pithos.web.client.foldertree.AccountResource;
  66 import gr.grnet.pithos.web.client.foldertree.File;
  67 import gr.grnet.pithos.web.client.foldertree.Folder;
  68 import gr.grnet.pithos.web.client.foldertree.FolderTreeView;
  69 import gr.grnet.pithos.web.client.foldertree.FolderTreeViewModel;
  70 import gr.grnet.pithos.web.client.foldertree.Resource;
  71 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView;
  72 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeViewModel;
  73 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView;
  74 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeViewModel;
  75 import gr.grnet.pithos.web.client.rest.DeleteRequest;
  76 import gr.grnet.pithos.web.client.rest.GetRequest;
  77 import gr.grnet.pithos.web.client.rest.PutRequest;
  78 import gr.grnet.pithos.web.client.rest.RestException;
  79
  80 import gr.grnet.pithos.web.client.tagtree.Tag;
  81 import gr.grnet.pithos.web.client.tagtree.TagTreeView;
  82 import gr.grnet.pithos.web.client.tagtree.TagTreeViewModel;
  83 import java.util.ArrayList;
  84 import java.util.Arrays;
  85 import java.util.Date;
  86 import java.util.HashMap;
  87 import java.util.Iterator;
  88 import java.util.List;
  89
  90 import com.google.gwt.core.client.EntryPoint;
  91 import com.google.gwt.core.client.GWT;
  92 import com.google.gwt.event.logical.shared.ResizeEvent;
  93 import com.google.gwt.event.logical.shared.ResizeHandler;
  94 import com.google.gwt.event.logical.shared.SelectionEvent;
  95 import com.google.gwt.event.logical.shared.SelectionHandler;
  96 import com.google.gwt.i18n.client.DateTimeFormat;
  97 import com.google.gwt.resources.client.ClientBundle;
  98 import com.google.gwt.resources.client.ImageResource;
  99 import com.google.gwt.user.client.Cookies;
 100 import com.google.gwt.user.client.Event;
 101 import com.google.gwt.user.client.History;
 102 import com.google.gwt.user.client.Window;
 103 import com.google.gwt.user.client.ui.AbstractImagePrototype;
 104 import com.google.gwt.user.client.ui.DecoratedTabPanel;
 105 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
 106 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
 107 import com.google.gwt.user.client.ui.RootPanel;
 108 import com.google.gwt.user.client.ui.TabPanel;
 109 import com.google.gwt.user.client.ui.VerticalPanel;
 110 import java.util.Set;
 111
 112 /**
 113  * Entry point classes define <code>onModuleLoad()</code>.
 114  */
 115 public class Pithos implements EntryPoint, ResizeHandler {
 116
 117         public static final String HOME_CONTAINER = "pithos";
 118
 119         /**
 120          * Instantiate an application-level image bundle. This object will provide
 121          * programmatic access to all the images needed by widgets.
 122          */
 123         private static Images images = (Images) GWT.create(Images.class);
 124
 125     public String getUsername() {
 126         return username;
 127     }
 128
 129     public void setAccount(AccountResource acct) {
 130         account = acct;
 131     }
 132
 133     public AccountResource getAccount() {
 134         return account;
 135     }
 136
 137     public void updateFolder(Folder f, boolean showfiles) {
 138         folderTreeView.updateFolder(f, showfiles);
 139     }
 140
 141     public void updateSharedFolder(Folder f, boolean showfiles) {
 142         mysharedTreeView.updateFolder(f, showfiles);
 143     }
 144
 145     public void updateOtherSharedFolder(Folder f, boolean showfiles) {
 146         otherSharedTreeView.updateFolder(f, showfiles);
 147     }
 148
 149     public void updateTag(Tag t) {
 150         tagTreeView.updateTag(t);
 151     }
 152
 153     public void updateTags() {
 154         tagTreeViewModel.initialize(getAllTags());
 155     }
 156
 157     public List<Tag> getAllTags() {
 158         List<Tag> tagList = new ArrayList<Tag>();
 159         for (Folder f : account.getContainers()) {
 160             for (String t : f.getTags()) {
 161                 tagList.add(new Tag(t));
 162             }
 163         }
 164         return tagList;
 165     }
 166
 167     public MysharedTreeView getMySharedTreeView() {
 168         return mysharedTreeView;
 169     }
 170
 171     /**
 172          * An aggregate image bundle that pulls together all the images for this
 173          * application into a single bundle.
 174          */
 175         public interface Images extends ClientBundle, TopPanel.Images, FilePropertiesDialog.Images, MessagePanel.Images, FileList.Images {
 176
 177                 @Source("gr/grnet/pithos/resources/document.png")
 178                 ImageResource folders();
 179
 180                 @Source("gr/grnet/pithos/resources/edit_group_22.png")
 181                 ImageResource groups();
 182
 183                 @Source("gr/grnet/pithos/resources/search.png")
 184                 ImageResource search();
 185         }
 186
 187         /**
 188          * The Application Clipboard implementation;
 189          */
 190         private Clipboard clipboard = new Clipboard();
 191
 192         /**
 193          * The top panel that contains the menu bar.
 194          */
 195         private TopPanel topPanel;
 196
 197         /**
 198          * The panel that contains the various system messages.
 199          */
 200         private MessagePanel messagePanel = new MessagePanel(Pithos.images);
 201
 202         /**
 203          * The bottom panel that contains the status bar.
 204          */
 205         private StatusPanel statusPanel = null;
 206
 207         /**
 208          * The file list widget.
 209          */
 210         private FileList fileList;
 211
 212         /**
 213          * The tab panel that occupies the right side of the screen.
 214          */
 215         private VerticalPanel inner = new VerticalPanel();
 216
 217
 218         /**
 219          * The split panel that will contain the left and right panels.
 220          */
 221         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 222
 223         /**
 224          * The currently selected item in the application, for use by the Edit menu
 225          * commands. Potential types are Folder, File, User and Group.
 226          */
 227         private Object currentSelection;
 228
 229
 230         /**
 231          * The WebDAV password of the current user
 232          */
 233         private String webDAVPassword;
 234
 235         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 236
 237     private String username = null;
 238
 239     /**
 240      * The authentication token of the current user.
 241      */
 242     private String token;
 243
 244     private SingleSelectionModel<Folder> folderTreeSelectionModel;
 245     private FolderTreeViewModel folderTreeViewModel;
 246     private FolderTreeView folderTreeView;
 247
 248     private SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 249     private MysharedTreeViewModel mysharedTreeViewModel;
 250     private MysharedTreeView mysharedTreeView;
 251
 252     private SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 253     private OtherSharedTreeViewModel otherSharedTreeViewModel;
 254     private OtherSharedTreeView otherSharedTreeView;
 255
 256     private SingleSelectionModel<Tag> tagTreeSelectionModel;
 257     private TagTreeViewModel tagTreeViewModel;
 258     private TagTreeView tagTreeView;
 259
 260     private AccountResource account;
 261
 262     private List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 263
 264         @Override
 265         public void onModuleLoad() {
 266                 if (parseUserCredentials())
 267             initialize();
 268         }
 269
 270     private void initialize() {
 271         VerticalPanel outer = new VerticalPanel();
 272         outer.setWidth("100%");
 273
 274         topPanel = new TopPanel(this, Pithos.images);
 275         topPanel.setWidth("100%");
 276         outer.add(topPanel);
 277
 278         messagePanel.setWidth("100%");
 279         messagePanel.setVisible(false);
 280         outer.add(messagePanel);
 281         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 282
 283
 284         // Inner contains the various lists.
 285         inner.sinkEvents(Event.ONCONTEXTMENU);
 286         inner.setWidth("100%");
 287
 288         HorizontalPanel rightside = new HorizontalPanel();
 289         rightside.addStyleName("pithos-rightSide");
 290         rightside.setSpacing(5);
 291
 292         PushButton parentButton = new PushButton(new Image(images.asc()), new ClickHandler() {
 293             @Override
 294             public void onClick(ClickEvent event) {
 295
 296             }
 297         });
 298         parentButton.addStyleName("pithos-parentButton");
 299         rightside.add(parentButton);
 300
 301         HTML folderStatistics = new HTML("5 Files (size: 1.1GB)");
 302         folderStatistics.addStyleName("pithos-folderStatistics");
 303         rightside.add(folderStatistics);
 304         inner.add(rightside);
 305         inner.setCellHorizontalAlignment(rightside, HasHorizontalAlignment.ALIGN_RIGHT);
 306         inner.setCellVerticalAlignment(rightside, HasVerticalAlignment.ALIGN_MIDDLE);
 307         inner.setCellHeight(rightside, "60px");
 308
 309         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 310         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 311             @Override
 312             public void onSelectionChange(SelectionChangeEvent event) {
 313                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 314                     deselectOthers(folderTreeSelectionModel);
 315                     Folder f = folderTreeSelectionModel.getSelectedObject();
 316                     updateFolder(f, true);
 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(SelectionChangeEvent event) {
 332                 if (mysharedTreeSelectionModel.getSelectedObject() != null) {
 333                     deselectOthers(mysharedTreeSelectionModel);
 334                     updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
 335                 }
 336             }
 337         });
 338         selectionModels.add(mysharedTreeSelectionModel);
 339         mysharedTreeViewModel = new MysharedTreeViewModel(this, mysharedTreeSelectionModel);
 340         mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
 341
 342         otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
 343         otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 344             @Override
 345             public void onSelectionChange(SelectionChangeEvent event) {
 346                 if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
 347                     deselectOthers(otherSharedTreeSelectionModel);
 348                     updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
 349                 }
 350             }
 351         });
 352         selectionModels.add(otherSharedTreeSelectionModel);
 353         otherSharedTreeViewModel = new OtherSharedTreeViewModel(this, otherSharedTreeSelectionModel);
 354         otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
 355
 356         tagTreeSelectionModel = new SingleSelectionModel<Tag>();
 357         tagTreeSelectionModel.addSelectionChangeHandler(new Handler() {
 358             @Override
 359             public void onSelectionChange(SelectionChangeEvent event) {
 360                 if (tagTreeSelectionModel.getSelectedObject() != null) {
 361                     deselectOthers(tagTreeSelectionModel);
 362                     Tag t = tagTreeSelectionModel.getSelectedObject();
 363                     updateTag(t);
 364                 }
 365             }
 366         });
 367         selectionModels.add(tagTreeSelectionModel);
 368         tagTreeViewModel = new TagTreeViewModel(this, tagTreeSelectionModel);
 369         tagTreeView = new TagTreeView(tagTreeViewModel);
 370
 371         VerticalPanel trees = new VerticalPanel();
 372
 373         Button upload = new Button("Upload File", new ClickHandler() {
 374             @Override
 375             public void onClick(ClickEvent event) {
 376                 new UploadFileCommand(Pithos.this, null, folderTreeView.getSelection()).execute();
 377             }
 378         });
 379         upload.addStyleName("pithos-uploadButton");
 380         trees.add(upload);
 381
 382         HorizontalPanel treeHeader = new HorizontalPanel();
 383         treeHeader.addStyleName("pithos-treeHeader");
 384         treeHeader.add(new HTML("Total Files: 6 | Used: 2.1 of 50 GB (4.2%)"));
 385         trees.add(treeHeader);
 386
 387         trees.add(folderTreeView);
 388         trees.add(mysharedTreeView);
 389         trees.add(otherSharedTreeView);
 390 //        trees.add(tagTreeView);
 391         // Add the left and right panels to the split panel.
 392         splitPanel.setLeftWidget(trees);
 393         splitPanel.setRightWidget(inner);
 394         splitPanel.setSplitPosition("25%");
 395         splitPanel.setSize("100%", "100%");
 396         splitPanel.addStyleName("pithos-splitPanel");
 397         outer.add(splitPanel);
 398
 399         statusPanel = new StatusPanel();
 400         outer.add(statusPanel);
 401
 402
 403         // Hook the window resize event, so that we can adjust the UI.
 404         Window.addResizeHandler(this);
 405         // Clear out the window's built-in margin, because we want to take
 406         // advantage of the entire client area.
 407         Window.setMargin("0px");
 408         // Finally, add the outer panel to the RootPanel, so that it will be
 409         // displayed.
 410         RootPanel.get().add(outer);
 411         // Call the window resized handler to get the initial sizes setup. Doing
 412         // this in a deferred command causes it to occur after all widgets'
 413         // sizes have been computed by the browser.
 414         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 415
 416             @Override
 417             public void execute() {
 418                 onWindowResized(Window.getClientHeight());
 419             }
 420         });
 421
 422         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 423             @Override
 424             public void execute() {
 425                 fetchAccount();
 426             }
 427         });
 428     }
 429
 430     public void deselectOthers(SingleSelectionModel model) {
 431         for (SingleSelectionModel s : selectionModels)
 432             if (!s.equals(model))
 433                 s.setSelected(s.getSelectedObject(), false);
 434     }
 435
 436     public void showFiles(Folder f) {
 437         Set<File> files = f.getFiles();
 438         showFiles(files);
 439     }
 440
 441     public void showFiles(Set<File> files) {
 442         //Iterator<File> iter = files.iterator();
 443         //fetchFile(iter, files);
 444         fileList.setFiles(new ArrayList<File>(files));
 445     }
 446
 447     private void fetchFile(final Iterator<File> iter, final Set<File> files) {
 448         if (iter.hasNext()) {
 449             File file = iter.next();
 450             String path = file.getUri() + "?format=json";
 451             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 452                 @Override
 453                 public void onSuccess(File result) {
 454                     fetchFile(iter, files);
 455                 }
 456
 457                 @Override
 458                 public void onError(Throwable t) {
 459                     GWT.log("Error getting file", t);
 460                     if (t instanceof RestException)
 461                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 462                     else
 463                         displayError("System error fetching file: " + t.getMessage());
 464                 }
 465             };
 466             getFile.setHeader("X-Auth-Token", "0000");
 467             Scheduler.get().scheduleDeferred(getFile);
 468         }
 469         else
 470             fileList.setFiles(new ArrayList<File>(files));
 471     }
 472
 473     /**
 474          * Parse and store the user credentials to the appropriate fields.
 475          */
 476         private boolean parseUserCredentials() {
 477         username = Window.Location.getParameter("user");
 478         token = Window.Location.getParameter("token");
 479         Configuration conf = (Configuration) GWT.create(Configuration.class);
 480         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 481             String cookie = conf.authCookie();
 482             String auth = Cookies.getCookie(cookie);
 483             if (auth == null) {
 484                 authenticateUser();
 485                 return false;
 486             }
 487             else {
 488                 String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 489                 if (authSplit.length != 2) {
 490                     authenticateUser();
 491                     return false;
 492                 }
 493                 else {
 494                     username = authSplit[0];
 495                     token = authSplit[1];
 496                     return true;
 497                 }
 498             }
 499         }
 500         else {
 501             Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
 502             return true;
 503         }
 504     }
 505
 506     /**
 507          * Redirect the user to the login page for authentication.
 508          */
 509         protected void authenticateUser() {
 510                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 511         Window.Location.assign(Window.Location.getHost() + conf.loginUrl() + "?next=" + Window.Location.getHref());
 512         }
 513
 514     private void fetchAccount() {
 515         String path = "?format=json";
 516
 517         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 518             @Override
 519             public void onSuccess(AccountResource result) {
 520                 account = result;
 521                 if (account.getContainers().isEmpty())
 522                     createHomeContainers();
 523                 else {
 524                     folderTreeViewModel.initialize(account);
 525                 }
 526             }
 527
 528             @Override
 529             public void onError(Throwable t) {
 530                 GWT.log("Error getting account", t);
 531                 if (t instanceof RestException)
 532                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 533                 else
 534                     displayError("System error fetching user data: " + t.getMessage());
 535             }
 536         };
 537         getAccount.setHeader("X-Auth-Token", token);
 538         Scheduler.get().scheduleDeferred(getAccount);
 539     }
 540
 541     private void createHomeContainers() {
 542         String path = "/pithos";
 543         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 544             @Override
 545             public void onSuccess(Resource result) {
 546                 fetchAccount();
 547             }
 548
 549             @Override
 550             public void onError(Throwable t) {
 551                 GWT.log("Error creating pithos", t);
 552                 if (t instanceof RestException)
 553                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 554                 else
 555                     displayError("System error Error creating pithos: " + t.getMessage());
 556             }
 557         };
 558         createPithos.setHeader("X-Auth-Token", getToken());
 559         Scheduler.get().scheduleDeferred(createPithos);
 560     }
 561
 562         /**
 563          * Creates an HTML fragment that places an image & caption together, for use
 564          * in a group header.
 565          *
 566          * @param imageProto an image prototype for an image
 567          * @param caption the group caption
 568          * @return the header HTML fragment
 569          */
 570         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 571                 String captionHTML = "<table class='caption' cellpadding='0' "
 572                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 573                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 574                 + caption + "</b></td></tr></table>";
 575                 return captionHTML;
 576         }
 577
 578         private void onWindowResized(int height) {
 579                 // Adjust the split panel to take up the available room in the window.
 580                 int newHeight = height - splitPanel.getAbsoluteTop() - 60;
 581                 if (newHeight < 1)
 582                         newHeight = 1;
 583                 splitPanel.setHeight("" + newHeight);
 584                 inner.setHeight("" + newHeight);
 585         }
 586
 587         @Override
 588         public void onResize(ResizeEvent event) {
 589                 int height = event.getHeight();
 590                 onWindowResized(height);
 591         }
 592
 593         /**
 594          * Display an error message.
 595          *
 596          * @param msg the message to display
 597          */
 598         public void displayError(String msg) {
 599                 messagePanel.displayError(msg);
 600         }
 601
 602         /**
 603          * Display a warning message.
 604          *
 605          * @param msg the message to display
 606          */
 607         public void displayWarning(String msg) {
 608                 messagePanel.displayWarning(msg);
 609         }
 610
 611         /**
 612          * Display an informational message.
 613          *
 614          * @param msg the message to display
 615          */
 616         public void displayInformation(String msg) {
 617                 messagePanel.displayInformation(msg);
 618         }
 619
 620         /**
 621          * Retrieve the fileList.
 622          *
 623          * @return the fileList
 624          */
 625         public FileList getFileList() {
 626                 return fileList;
 627         }
 628
 629         /**
 630          * Retrieve the topPanel.
 631          *
 632          * @return the topPanel
 633          */
 634         TopPanel getTopPanel() {
 635                 return topPanel;
 636         }
 637
 638         /**
 639          * Retrieve the clipboard.
 640          *
 641          * @return the clipboard
 642          */
 643         public Clipboard getClipboard() {
 644                 return clipboard;
 645         }
 646
 647         public StatusPanel getStatusPanel() {
 648                 return statusPanel;
 649         }
 650
 651         public String getToken() {
 652                 return token;
 653         }
 654
 655         public String getWebDAVPassword() {
 656                 return webDAVPassword;
 657         }
 658
 659         public static native void preventIESelection() /*-{
 660                 $doc.body.onselectstart = function () { return false; };
 661         }-*/;
 662
 663         public static native void enableIESelection() /*-{
 664                 if ($doc.body.onselectstart != null)
 665                 $doc.body.onselectstart = null;
 666         }-*/;
 667
 668         /**
 669          * @return the absolute path of the API root URL
 670          */
 671         public String getApiPath() {
 672                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 673                 return conf.apiPath();
 674         }
 675
 676         /**
 677          * History support for folder navigation
 678          * adds a new browser history entry
 679          *
 680          * @param key
 681          */
 682         public void updateHistory(String key){
 683 //              Replace any whitespace of the initial string to "+"
 684 //              String result = key.replaceAll("\\s","+");
 685 //              Add a new browser history entry.
 686 //              History.newItem(result);
 687                 History.newItem(key);
 688         }
 689
 690     public void deleteFolder(final Folder folder) {
 691         String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + folder.getPrefix();
 692         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 693         builder.setHeader("If-Modified-Since", "0");
 694         builder.setHeader("X-Auth-Token", getToken());
 695         try {
 696             builder.sendRequest("", new RequestCallback() {
 697                 @Override
 698                 public void onResponseReceived(Request request, Response response) {
 699                     if (response.getStatusCode() == Response.SC_OK) {
 700                         JSONValue json = JSONParser.parseStrict(response.getText());
 701                         JSONArray array = json.isArray();
 702                         int i = 0;
 703                         if (array != null) {
 704                             deleteObject(folder, i, array);
 705                         }
 706                     }
 707                 }
 708
 709                 @Override
 710                 public void onError(Request request, Throwable exception) {
 711                     displayError("System error unable to delete folder: " + exception.getMessage());
 712                 }
 713             });
 714         }
 715         catch (RequestException e) {
 716         }
 717     }
 718
 719     public void deleteObject(final Folder folder, final int i, final JSONArray array) {
 720         if (i < array.size()) {
 721             JSONObject o = array.get(i).isObject();
 722             if (o != null && !o.containsKey("subdir")) {
 723                 JSONString name = o.get("name").isString();
 724                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 725                 DeleteRequest delete = new DeleteRequest(getApiPath(), getUsername(), path) {
 726                     @Override
 727                     public void onSuccess(Resource result) {
 728                         deleteObject(folder, i + 1, array);
 729                     }
 730
 731                     @Override
 732                     public void onError(Throwable t) {
 733                         GWT.log("", t);
 734                         displayError("System error unable to delete folder: " + t.getMessage());
 735                     }
 736                 };
 737                 delete.setHeader("X-Auth-Token", getToken());
 738                 Scheduler.get().scheduleDeferred(delete);
 739             }
 740             else {
 741                 String subdir = o.get("subdir").isString().stringValue();
 742                 subdir = subdir.substring(0, subdir.length() - 1);
 743                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + subdir;
 744                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 745                 builder.setHeader("If-Modified-Since", "0");
 746                 builder.setHeader("X-Auth-Token", getToken());
 747                 try {
 748                     builder.sendRequest("", new RequestCallback() {
 749                         @Override
 750                         public void onResponseReceived(Request request, Response response) {
 751                             if (response.getStatusCode() == Response.SC_OK) {
 752                                 JSONValue json = JSONParser.parseStrict(response.getText());
 753                                 JSONArray array2 = json.isArray();
 754                                 if (array2 != null) {
 755                                     int l = array.size();
 756                                     for (int j=0; j<array2.size(); j++) {
 757                                         array.set(l++, array2.get(j));
 758                                     }
 759                                 }
 760                                 deleteObject(folder, i + 1, array);
 761                             }
 762                         }
 763
 764                         @Override
 765                         public void onError(Request request, Throwable exception) {
 766                             displayError("System error unable to delete folder: " + exception.getMessage());
 767                         }
 768                     });
 769                 }
 770                 catch (RequestException e) {
 771                 }
 772             }
 773         }
 774         else {
 775             String path = folder.getUri();
 776             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 777                 @Override
 778                 public void onSuccess(Resource result) {
 779                     updateFolder(folder.getParent(), true);
 780                 }
 781
 782                 @Override
 783                 public void onError(Throwable t) {
 784                     GWT.log("", t);
 785                     if (t instanceof RestException) {
 786                         displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 787                     }
 788                     else
 789                         displayError("System error unable to delete folder: " + t.getMessage());
 790                 }
 791             };
 792             deleteFolder.setHeader("X-Auth-Token", getToken());
 793             Scheduler.get().scheduleDeferred(deleteFolder);
 794         }
 795     }
 796
 797     public FolderTreeView getFolderTreeView() {
 798         return folderTreeView;
 799     }
 800
 801     public void copyFiles(final Iterator<File> iter, final String targetUri, final Command callback) {
 802         if (iter.hasNext()) {
 803             File file = iter.next();
 804             String path = targetUri + "/" + file.getName();
 805             PutRequest copyFile = new PutRequest(getApiPath(), getUsername(), path) {
 806                 @Override
 807                 public void onSuccess(Resource result) {
 808                     copyFiles(iter, targetUri, callback);
 809                 }
 810
 811                 @Override
 812                 public void onError(Throwable t) {
 813                     GWT.log("", t);
 814                     if (t instanceof RestException) {
 815                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 816                     }
 817                     else
 818                         displayError("System error unable to copy file: "+t.getMessage());
 819                 }
 820             };
 821             copyFile.setHeader("X-Auth-Token", getToken());
 822             copyFile.setHeader("X-Copy-From", file.getUri());
 823             Scheduler.get().scheduleDeferred(copyFile);
 824         }
 825         else  if (callback != null) {
 826             callback.execute();
 827         }
 828     }
 829
 830     public void copySubfolders(final Iterator<Folder> iter, final String targetUri, final Command callback) {
 831         if (iter.hasNext()) {
 832             final Folder f = iter.next();
 833             copyFolder(f, targetUri, callback);
 834         }
 835         else  if (callback != null) {
 836             callback.execute();
 837         }
 838     }
 839
 840     public void copyFolder(final Folder f, final String targetUri, final Command callback) {
 841         String path = targetUri + "/" + f.getName();
 842         PutRequest createFolder = new PutRequest(getApiPath(), getUsername(), path) {
 843             @Override
 844             public void onSuccess(Resource result) {
 845                 Iterator<File> iter = f.getFiles().iterator();
 846                 copyFiles(iter, targetUri + "/" + f.getName(), new Command() {
 847                     @Override
 848                     public void execute() {
 849                         Iterator<Folder> iterf = f.getSubfolders().iterator();
 850                         copySubfolders(iterf, targetUri + "/" + f.getName(), new Command() {
 851                             @Override
 852                             public void execute() {
 853                                 callback.execute();
 854                             }
 855                         });
 856                     }
 857                 });
 858             }
 859
 860             @Override
 861             public void onError(Throwable t) {
 862                 GWT.log("", t);
 863                 if (t instanceof RestException) {
 864                     displayError("Unable to create folder:" + ((RestException) t).getHttpStatusText());
 865                 }
 866                 else
 867                     displayError("System error creating folder:" + t.getMessage());
 868             }
 869         };
 870         createFolder.setHeader("X-Auth-Token", getToken());
 871         createFolder.setHeader("Accept", "*/*");
 872         createFolder.setHeader("Content-Length", "0");
 873         createFolder.setHeader("Content-Type", "application/folder");
 874         Scheduler.get().scheduleDeferred(createFolder);
 875     }
 876
 877     public void addSelectionModel(SingleSelectionModel model) {
 878         selectionModels.add(model);
 879     }
 880
 881         public OtherSharedTreeView getOtherSharedTreeView() {
 882                 return otherSharedTreeView;
 883         }
 884 }