org.argeo.security.ui.admin/src/org/argeo/security/ui/admin/internal/UiAdminUtils.java

   1 package org.argeo.security.ui.admin.internal;
   2
   3 import java.security.AccessController;
   4 import java.security.Principal;
   5
   6 import javax.security.auth.Subject;
   7 import javax.security.auth.x500.X500Principal;
   8 import javax.transaction.Status;
   9 import javax.transaction.UserTransaction;
  10
  11 import org.argeo.ArgeoException;
  12 import org.eclipse.ui.IWorkbenchWindow;
  13 import org.eclipse.ui.PlatformUI;
  14 import org.eclipse.ui.services.ISourceProviderService;
  15 import org.osgi.service.useradmin.Role;
  16 import org.osgi.service.useradmin.User;
  17
  18 /** First effort to centralize back end methods used by the user admin UI */
  19 public class UiAdminUtils {
  20         public final static String getUsername() {
  21                 Subject subject = Subject.getSubject(AccessController.getContext());
  22                 Principal principal = subject.getPrincipals(X500Principal.class)
  23                                 .iterator().next();
  24                 return principal.getName();
  25
  26         }
  27
  28         public final static String getUsername(User user) {
  29                 String cn = getProperty(user, UserAdminConstants.KEY_CN);
  30                 if (isEmpty(cn))
  31                         cn = getProperty(user, UserAdminConstants.KEY_UID);
  32                 return cn;
  33         }
  34
  35         public final static String getProperty(Role role, String key) {
  36                 Object obj = role.getProperties().get(key);
  37                 if (obj != null)
  38                         return (String) obj;
  39                 else
  40                         return "";
  41         }
  42
  43         public final static String getDefaultCn(String firstName, String lastName) {
  44                 return (firstName.trim() + " " + lastName.trim() + " ").trim();
  45         }
  46
  47         /*
  48          * INTERNAL METHODS: Below methods are meant to stay here and are not part
  49          * of a potential generic backend to manage the useradmin
  50          */
  51         public final static boolean notNull(String string) {
  52                 if (string == null)
  53                         return false;
  54                 else
  55                         return !"".equals(string.trim());
  56         }
  57
  58         public final static boolean isEmpty(String string) {
  59                 if (string == null)
  60                         return true;
  61                 else
  62                         return "".equals(string.trim());
  63         }
  64
  65         /** Must be called from the UI Thread. */
  66         public final static void beginTransactionIfNeeded(
  67                         UserTransaction userTransaction) {
  68                 try {
  69                         if (userTransaction.getStatus() == Status.STATUS_NO_TRANSACTION) {
  70                                 userTransaction.begin();
  71                                 notifyTransactionStateChange(userTransaction);
  72                         }
  73                 } catch (Exception e) {
  74                         throw new ArgeoException("Unable to begin transaction", e);
  75                 }
  76         }
  77
  78         /** Easily notify the ActiveWindow that the transaction had a state change */
  79         public final static void notifyTransactionStateChange(
  80                         UserTransaction userTransaction) {
  81                 try {
  82                         IWorkbenchWindow aww = PlatformUI.getWorkbench()
  83                                         .getActiveWorkbenchWindow();
  84                         ISourceProviderService sourceProviderService = (ISourceProviderService) aww
  85                                         .getService(ISourceProviderService.class);
  86                         UserTransactionProvider esp = (UserTransactionProvider) sourceProviderService
  87                                         .getSourceProvider(UserTransactionProvider.TRANSACTION_STATE);
  88                         esp.setUserTransaction(userTransaction);
  89                         esp.fireTransactionStateChange();
  90                 } catch (Exception e) {
  91                         throw new ArgeoException("Unable to begin transaction", e);
  92                 }
  93         }
  94 }