org.argeo.cms.ui.workbench/src/org/argeo/cms/ui/workbench/internal/useradmin/parts/UserBatchUpdateWizard.java

   1 package org.argeo.cms.ui.workbench.internal.useradmin.parts;
   2
   3 import java.util.ArrayList;
   4 import java.util.HashMap;
   5 import java.util.List;
   6 import java.util.Map;
   7
   8 import javax.transaction.SystemException;
   9 import javax.transaction.UserTransaction;
  10
  11 import org.apache.commons.logging.Log;
  12 import org.apache.commons.logging.LogFactory;
  13 import org.argeo.cms.CmsException;
  14 import org.argeo.cms.auth.CurrentUser;
  15 import org.argeo.cms.ui.workbench.internal.useradmin.UserAdminWrapper;
  16 import org.argeo.cms.ui.workbench.internal.useradmin.providers.CommonNameLP;
  17 import org.argeo.cms.ui.workbench.internal.useradmin.providers.DomainNameLP;
  18 import org.argeo.cms.ui.workbench.internal.useradmin.providers.MailLP;
  19 import org.argeo.cms.ui.workbench.internal.useradmin.providers.UserNameLP;
  20 import org.argeo.cms.util.UserAdminUtils;
  21 import org.argeo.eclipse.ui.ColumnDefinition;
  22 import org.argeo.eclipse.ui.EclipseUiUtils;
  23 import org.argeo.eclipse.ui.parts.LdifUsersTable;
  24 import org.argeo.naming.LdapAttrs;
  25 import org.argeo.naming.LdapObjs;
  26 import org.argeo.node.NodeConstants;
  27 import org.eclipse.jface.dialogs.IPageChangeProvider;
  28 import org.eclipse.jface.dialogs.IPageChangedListener;
  29 import org.eclipse.jface.dialogs.MessageDialog;
  30 import org.eclipse.jface.dialogs.PageChangedEvent;
  31 import org.eclipse.jface.wizard.IWizardContainer;
  32 import org.eclipse.jface.wizard.Wizard;
  33 import org.eclipse.jface.wizard.WizardPage;
  34 import org.eclipse.swt.SWT;
  35 import org.eclipse.swt.events.ModifyEvent;
  36 import org.eclipse.swt.events.ModifyListener;
  37 import org.eclipse.swt.events.SelectionAdapter;
  38 import org.eclipse.swt.events.SelectionEvent;
  39 import org.eclipse.swt.layout.GridData;
  40 import org.eclipse.swt.layout.GridLayout;
  41 import org.eclipse.swt.widgets.Button;
  42 import org.eclipse.swt.widgets.Combo;
  43 import org.eclipse.swt.widgets.Composite;
  44 import org.eclipse.swt.widgets.Text;
  45 import org.osgi.framework.InvalidSyntaxException;
  46 import org.osgi.service.useradmin.Role;
  47 import org.osgi.service.useradmin.User;
  48
  49 /** Wizard to update users */
  50 public class UserBatchUpdateWizard extends Wizard {
  51
  52         private final static Log log = LogFactory
  53                         .getLog(UserBatchUpdateWizard.class);
  54         private UserAdminWrapper userAdminWrapper;
  55
  56         // pages
  57         private ChooseCommandWizardPage chooseCommandPage;
  58         private ChooseUsersWizardPage userListPage;
  59         private ValidateAndLaunchWizardPage validatePage;
  60
  61         // Various implemented commands keys
  62         private final static String CMD_UPDATE_PASSWORD = "resetPassword";
  63         private final static String CMD_GROUP_MEMBERSHIP = "groupMembership";
  64
  65         private final Map<String, String> commands = new HashMap<String, String>() {
  66                 private static final long serialVersionUID = 1L;
  67                 {
  68                         put("Reset password(s)", CMD_UPDATE_PASSWORD);
  69                         // TODO implement role / group management
  70                         // put("Add/Remove from group", CMD_GROUP_MEMBERSHIP);
  71                 }
  72         };
  73
  74         public UserBatchUpdateWizard(UserAdminWrapper userAdminWrapper) {
  75                 this.userAdminWrapper = userAdminWrapper;
  76         }
  77
  78         @Override
  79         public void addPages() {
  80                 chooseCommandPage = new ChooseCommandWizardPage();
  81                 addPage(chooseCommandPage);
  82                 userListPage = new ChooseUsersWizardPage();
  83                 addPage(userListPage);
  84                 validatePage = new ValidateAndLaunchWizardPage();
  85                 addPage(validatePage);
  86         }
  87
  88         @Override
  89         public boolean performFinish() {
  90                 if (!canFinish())
  91                         return false;
  92                 UserTransaction ut = userAdminWrapper.getUserTransaction();
  93                 try {
  94                         if (ut.getStatus() != javax.transaction.Status.STATUS_NO_TRANSACTION
  95                                         && !MessageDialog.openConfirm(getShell(),
  96                                                         "Existing Transaction",
  97                                                         "A user transaction is already existing, "
  98                                                                         + "are you sure you want to proceed ?"))
  99                                 return false;
 100                 } catch (SystemException e) {
 101                         throw new CmsException("Cannot get user transaction state "
 102                                         + "before user batch update", e);
 103                 }
 104
 105                 // We cannot use jobs, user modifications are still meant to be done in
 106                 // the UIThread
 107                 // UpdateJob job = null;
 108                 // if (job != null)
 109                 // job.schedule();
 110
 111                 if (CMD_UPDATE_PASSWORD.equals(chooseCommandPage.getCommand())) {
 112                         char[] newValue = chooseCommandPage.getPwdValue();
 113                         if (newValue == null)
 114                                 throw new CmsException(
 115                                                 "Password cannot be null or an empty string");
 116                         ResetPassword job = new ResetPassword(userAdminWrapper,
 117                                         userListPage.getSelectedUsers(), newValue);
 118                         job.doUpdate();
 119                 }
 120                 return true;
 121         }
 122
 123         public boolean canFinish() {
 124                 if (this.getContainer().getCurrentPage() == validatePage)
 125                         return true;
 126                 return false;
 127         }
 128
 129         private class ResetPassword {
 130                 private char[] newPwd;
 131                 private UserAdminWrapper userAdminWrapper;
 132                 private List<User> usersToUpdate;
 133
 134                 public ResetPassword(UserAdminWrapper userAdminWrapper,
 135                                 List<User> usersToUpdate, char[] newPwd) {
 136                         this.newPwd = newPwd;
 137                         this.usersToUpdate = usersToUpdate;
 138                         this.userAdminWrapper = userAdminWrapper;
 139                 }
 140
 141                 @SuppressWarnings("unchecked")
 142                 protected void doUpdate() {
 143                         userAdminWrapper.beginTransactionIfNeeded();
 144                         try {
 145                                 for (User user : usersToUpdate) {
 146                                         // the char array is emptied after being used.
 147                                         user.getCredentials().put(null, newPwd.clone());
 148                                 }
 149                                 userAdminWrapper.commitOrNotifyTransactionStateChange();
 150                         } catch (Exception e) {
 151                                 throw new CmsException("Cannot perform batch update on users",
 152                                                 e);
 153                         } finally {
 154                                 UserTransaction ut = userAdminWrapper.getUserTransaction();
 155                                 try {
 156                                         if (ut.getStatus() != javax.transaction.Status.STATUS_NO_TRANSACTION)
 157                                                 ut.rollback();
 158                                 } catch (IllegalStateException | SecurityException
 159                                                 | SystemException e) {
 160                                         log.error("Unable to rollback session in 'finally', "
 161                                                         + "the system might be in a dirty state");
 162                                         e.printStackTrace();
 163                                 }
 164                         }
 165                 }
 166         }
 167
 168         // @SuppressWarnings("unused")
 169         // private class AddToGroup extends UpdateJob {
 170         // private String groupID;
 171         // private Session session;
 172         //
 173         // public AddToGroup(Session session, List<Node> nodesToUpdate,
 174         // String groupID) {
 175         // super(session, nodesToUpdate);
 176         // this.session = session;
 177         // this.groupID = groupID;
 178         // }
 179         //
 180         // protected void doUpdate(Node node) {
 181         // log.info("Add/Remove to group actions are not yet implemented");
 182         // // TODO implement this
 183         // // try {
 184         // // throw new CmsException("Not yet implemented");
 185         // // } catch (RepositoryException re) {
 186         // // throw new CmsException(
 187         // // "Unable to update boolean value for node " + node, re);
 188         // // }
 189         // }
 190         // }
 191
 192         // /**
 193         // * Base privileged job that will be run asynchronously to perform the
 194         // batch
 195         // * update
 196         // */
 197         // private abstract class UpdateJob extends PrivilegedJob {
 198         //
 199         // private final UserAdminWrapper userAdminWrapper;
 200         // private final List<User> usersToUpdate;
 201         //
 202         // protected abstract void doUpdate(User user);
 203         //
 204         // public UpdateJob(UserAdminWrapper userAdminWrapper,
 205         // List<User> usersToUpdate) {
 206         // super("Perform update");
 207         // this.usersToUpdate = usersToUpdate;
 208         // this.userAdminWrapper = userAdminWrapper;
 209         // }
 210         //
 211         // @Override
 212         // protected IStatus doRun(IProgressMonitor progressMonitor) {
 213         // try {
 214         // JcrMonitor monitor = new EclipseJcrMonitor(progressMonitor);
 215         // int total = usersToUpdate.size();
 216         // monitor.beginTask("Performing change", total);
 217         // userAdminWrapper.beginTransactionIfNeeded();
 218         // for (User user : usersToUpdate) {
 219         // doUpdate(user);
 220         // monitor.worked(1);
 221         // }
 222         // userAdminWrapper.getUserTransaction().commit();
 223         // } catch (Exception e) {
 224         // throw new CmsException(
 225         // "Cannot perform batch update on users", e);
 226         // } finally {
 227         // UserTransaction ut = userAdminWrapper.getUserTransaction();
 228         // try {
 229         // if (ut.getStatus() != javax.transaction.Status.STATUS_NO_TRANSACTION)
 230         // ut.rollback();
 231         // } catch (IllegalStateException | SecurityException
 232         // | SystemException e) {
 233         // log.error("Unable to rollback session in 'finally', "
 234         // + "the system might be in a dirty state");
 235         // e.printStackTrace();
 236         // }
 237         // }
 238         // return Status.OK_STATUS;
 239         // }
 240         // }
 241
 242         // PAGES
 243         /** Displays a combo box that enables user to choose which action to perform */
 244         private class ChooseCommandWizardPage extends WizardPage {
 245                 private static final long serialVersionUID = -8069434295293996633L;
 246                 private Combo chooseCommandCmb;
 247                 private Button trueChk;
 248                 private Text valueTxt;
 249                 private Text pwdTxt;
 250                 private Text pwd2Txt;
 251
 252                 public ChooseCommandWizardPage() {
 253                         super("Choose a command to run.");
 254                         setTitle("Choose a command to run.");
 255                 }
 256
 257                 @Override
 258                 public void createControl(Composite parent) {
 259                         GridLayout gl = new GridLayout();
 260                         Composite container = new Composite(parent, SWT.NO_FOCUS);
 261                         container.setLayout(gl);
 262
 263                         chooseCommandCmb = new Combo(container, SWT.READ_ONLY);
 264                         chooseCommandCmb.setLayoutData(EclipseUiUtils.fillWidth());
 265                         String[] values = commands.keySet().toArray(new String[0]);
 266                         chooseCommandCmb.setItems(values);
 267
 268                         final Composite bottomPart = new Composite(container, SWT.NO_FOCUS);
 269                         bottomPart.setLayoutData(EclipseUiUtils.fillAll());
 270                         bottomPart.setLayout(EclipseUiUtils.noSpaceGridLayout());
 271
 272                         chooseCommandCmb.addSelectionListener(new SelectionAdapter() {
 273                                 private static final long serialVersionUID = 1L;
 274
 275                                 @Override
 276                                 public void widgetSelected(SelectionEvent e) {
 277                                         if (getCommand().equals(CMD_UPDATE_PASSWORD))
 278                                                 populatePasswordCmp(bottomPart);
 279                                         else if (getCommand().equals(CMD_GROUP_MEMBERSHIP))
 280                                                 populateGroupCmp(bottomPart);
 281                                         else
 282                                                 populateBooleanFlagCmp(bottomPart);
 283                                         checkPageComplete();
 284                                         bottomPart.layout(true, true);
 285                                 }
 286                         });
 287                         setControl(container);
 288                 }
 289
 290                 private void populateBooleanFlagCmp(Composite parent) {
 291                         EclipseUiUtils.clear(parent);
 292                         trueChk = new Button(parent, SWT.CHECK);
 293                         trueChk.setText("Do it. (It will to the contrary if unchecked)");
 294                         trueChk.setSelection(true);
 295                         trueChk.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false));
 296                 }
 297
 298                 private void populatePasswordCmp(Composite parent) {
 299                         EclipseUiUtils.clear(parent);
 300                         Composite body = new Composite(parent, SWT.NO_FOCUS);
 301
 302                         ModifyListener ml = new ModifyListener() {
 303                                 private static final long serialVersionUID = -1558726363536729634L;
 304
 305                                 @Override
 306                                 public void modifyText(ModifyEvent event) {
 307                                         checkPageComplete();
 308                                 }
 309                         };
 310
 311                         body.setLayout(new GridLayout(2, false));
 312                         body.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
 313                         pwdTxt = EclipseUiUtils.createGridLP(body, "New password", ml);
 314                         pwd2Txt = EclipseUiUtils.createGridLP(body, "Repeat password", ml);
 315                 }
 316
 317                 private void checkPageComplete() {
 318                         String errorMsg = null;
 319                         if (chooseCommandCmb.getSelectionIndex() < 0)
 320                                 errorMsg = "Please select an action";
 321                         else if (CMD_UPDATE_PASSWORD.equals(getCommand())) {
 322                                 if (EclipseUiUtils.isEmpty(pwdTxt.getText())
 323                                                 || pwdTxt.getText().length() < 4)
 324                                         errorMsg = "Please enter a password that is at least 4 character long";
 325                                 else if (!pwdTxt.getText().equals(pwd2Txt.getText()))
 326                                         errorMsg = "Passwords are different";
 327                         }
 328                         if (EclipseUiUtils.notEmpty(errorMsg)) {
 329                                 setMessage(errorMsg, WizardPage.ERROR);
 330                                 setPageComplete(false);
 331                         } else {
 332                                 setMessage("Page complete, you can proceed to user choice",
 333                                                 WizardPage.INFORMATION);
 334                                 setPageComplete(true);
 335                         }
 336
 337                         getContainer().updateButtons();
 338                 }
 339
 340                 private void populateGroupCmp(Composite parent) {
 341                         EclipseUiUtils.clear(parent);
 342                         trueChk = new Button(parent, SWT.CHECK);
 343                         trueChk.setText("Add to group. (It will remove user(s) from the "
 344                                         + "corresponding group if unchecked)");
 345                         trueChk.setSelection(true);
 346                         trueChk.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false));
 347                 }
 348
 349                 protected String getCommand() {
 350                         return commands.get(chooseCommandCmb.getItem(chooseCommandCmb
 351                                         .getSelectionIndex()));
 352                 }
 353
 354                 protected String getCommandLbl() {
 355                         return chooseCommandCmb.getItem(chooseCommandCmb
 356                                         .getSelectionIndex());
 357                 }
 358
 359                 @SuppressWarnings("unused")
 360                 protected boolean getBoleanValue() {
 361                         // FIXME this is not consistent and will lead to errors.
 362                         if ("argeo:enabled".equals(getCommand()))
 363                                 return trueChk.getSelection();
 364                         else
 365                                 return !trueChk.getSelection();
 366                 }
 367
 368                 @SuppressWarnings("unused")
 369                 protected String getStringValue() {
 370                         String value = null;
 371                         if (valueTxt != null) {
 372                                 value = valueTxt.getText();
 373                                 if ("".equals(value.trim()))
 374                                         value = null;
 375                         }
 376                         return value;
 377                 }
 378
 379                 protected char[] getPwdValue() {
 380                         // We do not directly reset the password text fields: There is no
 381                         // need to over secure this process: setting a pwd to multi users
 382                         // at the same time is anyhow a bad practice and should be used only
 383                         // in test environment or for temporary access
 384                         if (pwdTxt == null || pwdTxt.isDisposed())
 385                                 return null;
 386                         else
 387                                 return pwdTxt.getText().toCharArray();
 388                 }
 389         }
 390
 391         /**
 392          * Displays a list of users with a check box to be able to choose some of
 393          * them
 394          */
 395         private class ChooseUsersWizardPage extends WizardPage implements
 396                         IPageChangedListener {
 397                 private static final long serialVersionUID = 7651807402211214274L;
 398                 private ChooseUserTableViewer userTableCmp;
 399
 400                 public ChooseUsersWizardPage() {
 401                         super("Choose Users");
 402                         setTitle("Select users who will be impacted");
 403                 }
 404
 405                 @Override
 406                 public void createControl(Composite parent) {
 407                         Composite pageCmp = new Composite(parent, SWT.NONE);
 408                         pageCmp.setLayout(EclipseUiUtils.noSpaceGridLayout());
 409
 410                         // Define the displayed columns
 411                         List<ColumnDefinition> columnDefs = new ArrayList<ColumnDefinition>();
 412                         columnDefs.add(new ColumnDefinition(new CommonNameLP(),
 413                                         "Common Name", 150));
 414                         columnDefs.add(new ColumnDefinition(new MailLP(), "E-mail", 150));
 415                         columnDefs.add(new ColumnDefinition(new DomainNameLP(), "Domain",
 416                                         200));
 417
 418                         // Only show technical DN to admin
 419                         if (CurrentUser.isInRole(NodeConstants.ROLE_ADMIN))
 420                                 columnDefs.add(new ColumnDefinition(new UserNameLP(),
 421                                                 "Distinguished Name", 300));
 422
 423                         userTableCmp = new ChooseUserTableViewer(pageCmp, SWT.MULTI
 424                                         | SWT.H_SCROLL | SWT.V_SCROLL);
 425                         userTableCmp.setLayoutData(EclipseUiUtils.fillAll());
 426                         userTableCmp.setColumnDefinitions(columnDefs);
 427                         userTableCmp.populate(true, true);
 428                         userTableCmp.refresh();
 429
 430                         setControl(pageCmp);
 431
 432                         // Add listener to update message when shown
 433                         final IWizardContainer wContainer = this.getContainer();
 434                         if (wContainer instanceof IPageChangeProvider) {
 435                                 ((IPageChangeProvider) wContainer).addPageChangedListener(this);
 436                         }
 437
 438                 }
 439
 440                 @Override
 441                 public void pageChanged(PageChangedEvent event) {
 442                         if (event.getSelectedPage() == this) {
 443                                 String msg = "Chosen batch action: "
 444                                                 + chooseCommandPage.getCommandLbl();
 445                                 ((WizardPage) event.getSelectedPage()).setMessage(msg);
 446                         }
 447                 }
 448
 449                 protected List<User> getSelectedUsers() {
 450                         return userTableCmp.getSelectedUsers();
 451                 }
 452
 453                 private class ChooseUserTableViewer extends LdifUsersTable {
 454                         private static final long serialVersionUID = 5080437561015853124L;
 455                         private final String[] knownProps = { LdapAttrs.uid.name(),
 456                                         LdapAttrs.DN, LdapAttrs.cn.name(),
 457                                         LdapAttrs.givenName.name(), LdapAttrs.sn.name(),
 458                                         LdapAttrs.mail.name() };
 459
 460                         public ChooseUserTableViewer(Composite parent, int style) {
 461                                 super(parent, style);
 462                         }
 463
 464                         @Override
 465                         protected List<User> listFilteredElements(String filter) {
 466                                 Role[] roles;
 467
 468                                 try {
 469                                         StringBuilder builder = new StringBuilder();
 470
 471                                         StringBuilder tmpBuilder = new StringBuilder();
 472                                         if (EclipseUiUtils.notEmpty(filter))
 473                                                 for (String prop : knownProps) {
 474                                                         tmpBuilder.append("(");
 475                                                         tmpBuilder.append(prop);
 476                                                         tmpBuilder.append("=*");
 477                                                         tmpBuilder.append(filter);
 478                                                         tmpBuilder.append("*)");
 479                                                 }
 480                                         if (tmpBuilder.length() > 1) {
 481                                                 builder.append("(&(")
 482                                                                 .append(LdapAttrs.objectClass.name())
 483                                                                 .append("=")
 484                                                                 .append(LdapObjs.inetOrgPerson.name())
 485                                                                 .append(")(|");
 486                                                 builder.append(tmpBuilder.toString());
 487                                                 builder.append("))");
 488                                         } else
 489                                                 builder.append("(")
 490                                                                 .append(LdapAttrs.objectClass.name())
 491                                                                 .append("=")
 492                                                                 .append(LdapObjs.inetOrgPerson.name())
 493                                                                 .append(")");
 494                                         roles = userAdminWrapper.getUserAdmin().getRoles(
 495                                                         builder.toString());
 496                                 } catch (InvalidSyntaxException e) {
 497                                         throw new CmsException("Unable to get roles with filter: "
 498                                                         + filter, e);
 499                                 }
 500                                 List<User> users = new ArrayList<User>();
 501                                 for (Role role : roles)
 502                                         // Prevent current logged in user to perform batch on
 503                                         // himself
 504                                         if (!UserAdminUtils.isCurrentUser((User) role))
 505                                                 users.add((User) role);
 506                                 return users;
 507                         }
 508                 }
 509         }
 510
 511         /** Summary of input data before launching the process */
 512         private class ValidateAndLaunchWizardPage extends WizardPage implements
 513                         IPageChangedListener {
 514                 private static final long serialVersionUID = 7098918351451743853L;
 515                 private ChosenUsersTableViewer userTableCmp;
 516
 517                 public ValidateAndLaunchWizardPage() {
 518                         super("Validate and launch");
 519                         setTitle("Validate and launch");
 520                 }
 521
 522                 @Override
 523                 public void createControl(Composite parent) {
 524                         Composite pageCmp = new Composite(parent, SWT.NO_FOCUS);
 525                         pageCmp.setLayout(EclipseUiUtils.noSpaceGridLayout());
 526
 527                         List<ColumnDefinition> columnDefs = new ArrayList<ColumnDefinition>();
 528                         columnDefs.add(new ColumnDefinition(new CommonNameLP(),
 529                                         "Common Name", 150));
 530                         columnDefs.add(new ColumnDefinition(new MailLP(), "E-mail", 150));
 531                         columnDefs.add(new ColumnDefinition(new DomainNameLP(), "Domain",
 532                                         200));
 533                         // Only show technical DN to admin
 534                         if (CurrentUser.isInRole(NodeConstants.ROLE_ADMIN))
 535                                 columnDefs.add(new ColumnDefinition(new UserNameLP(),
 536                                                 "Distinguished Name", 300));
 537                         userTableCmp = new ChosenUsersTableViewer(pageCmp, SWT.MULTI
 538                                         | SWT.H_SCROLL | SWT.V_SCROLL);
 539                         userTableCmp.setLayoutData(EclipseUiUtils.fillAll());
 540                         userTableCmp.setColumnDefinitions(columnDefs);
 541                         userTableCmp.populate(false, false);
 542                         userTableCmp.refresh();
 543                         setControl(pageCmp);
 544                         // Add listener to update message when shown
 545                         final IWizardContainer wContainer = this.getContainer();
 546                         if (wContainer instanceof IPageChangeProvider) {
 547                                 ((IPageChangeProvider) wContainer).addPageChangedListener(this);
 548                         }
 549                 }
 550
 551                 @Override
 552                 public void pageChanged(PageChangedEvent event) {
 553                         if (event.getSelectedPage() == this) {
 554                                 @SuppressWarnings({ "unchecked", "rawtypes" })
 555                                 Object[] values = ((ArrayList) userListPage.getSelectedUsers())
 556                                                 .toArray(new Object[userListPage.getSelectedUsers()
 557                                                                 .size()]);
 558                                 userTableCmp.getTableViewer().setInput(values);
 559                                 String msg = "Following batch action: ["
 560                                                 + chooseCommandPage.getCommandLbl()
 561                                                 + "] will be perfomed on the users listed below.\n";
 562                                 // + "Are you sure you want to proceed?";
 563                                 setMessage(msg);
 564                         }
 565                 }
 566
 567                 private class ChosenUsersTableViewer extends LdifUsersTable {
 568                         private static final long serialVersionUID = 7814764735794270541L;
 569
 570                         public ChosenUsersTableViewer(Composite parent, int style) {
 571                                 super(parent, style);
 572                         }
 573
 574                         @Override
 575                         protected List<User> listFilteredElements(String filter) {
 576                                 return userListPage.getSelectedUsers();
 577                         }
 578                 }
 579         }
 580 }