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

   1 package org.argeo.security.ui.admin.internal;
   2
   3 import java.util.ArrayList;
   4 import java.util.List;
   5
   6 import javax.transaction.Status;
   7 import javax.transaction.UserTransaction;
   8
   9 import org.argeo.ArgeoException;
  10 import org.osgi.service.useradmin.UserAdminEvent;
  11 import org.osgi.service.useradmin.UserAdminListener;
  12
  13 /** Centralize interaction with the UserAdmin in this bundle */
  14 public class UserAdminWrapper extends
  15                 org.argeo.security.ui.admin.internal.AbstractUserAdminWrapper {
  16         // private Log log = LogFactory.getLog(UserAdminWrapper.class);
  17
  18         // Registered listeners
  19         List<UserAdminListener> listeners = new ArrayList<UserAdminListener>();
  20
  21         /**
  22          * Overwrite the normal begin transaction behaviour to also notify the UI.
  23          * Must be called from the UI Thread.
  24          */
  25         public UserTransaction beginTransactionIfNeeded() {
  26                 try {
  27                         UserTransaction userTransaction = getUserTransaction();
  28                         if (userTransaction.getStatus() == Status.STATUS_NO_TRANSACTION) {
  29                                 userTransaction.begin();
  30                                 UiAdminUtils.notifyTransactionStateChange(userTransaction);
  31                         }
  32                         return userTransaction;
  33                 } catch (Exception e) {
  34                         throw new ArgeoException("Unable to begin transaction", e);
  35                 }
  36         }
  37
  38         // TODO implement safer mechanism
  39         public void addListener(UserAdminListener userAdminListener) {
  40                 if (!listeners.contains(userAdminListener))
  41                         listeners.add(userAdminListener);
  42         }
  43
  44         // Expose this?
  45         public void removeListener(UserAdminListener userAdminListener) {
  46                 if (listeners.contains(userAdminListener))
  47                         listeners.remove(userAdminListener);
  48         }
  49
  50         public void notifyListeners(UserAdminEvent event) {
  51                 for (UserAdminListener listener : listeners)
  52                         listener.roleChanged(event);
  53         }
  54 }