DeleteUsers.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.cms.ui.workbench.internal.useradmin.commands;
  17
  18 import java.util.ArrayList;
  19 import java.util.Iterator;
  20 import java.util.List;
  21
  22 import org.argeo.cms.ui.workbench.WorkbenchUiPlugin;
  23 import org.argeo.cms.ui.workbench.internal.useradmin.UserAdminWrapper;
  24 import org.argeo.cms.ui.workbench.internal.useradmin.parts.UserEditorInput;
  25 import org.argeo.cms.util.useradmin.UserAdminUtils;
  26 import org.eclipse.core.commands.AbstractHandler;
  27 import org.eclipse.core.commands.ExecutionEvent;
  28 import org.eclipse.core.commands.ExecutionException;
  29 import org.eclipse.jface.dialogs.MessageDialog;
  30 import org.eclipse.jface.viewers.ISelection;
  31 import org.eclipse.jface.viewers.IStructuredSelection;
  32 import org.eclipse.ui.IEditorPart;
  33 import org.eclipse.ui.IWorkbenchPage;
  34 import org.eclipse.ui.handlers.HandlerUtil;
  35 import org.osgi.service.useradmin.User;
  36 import org.osgi.service.useradmin.UserAdmin;
  37 import org.osgi.service.useradmin.UserAdminEvent;
  38
  39 /** Delete the selected users */
  40 public class DeleteUsers extends AbstractHandler {
  41         public final static String ID = WorkbenchUiPlugin.PLUGIN_ID + ".deleteUsers";
  42
  43         /* DEPENDENCY INJECTION */
  44         private UserAdminWrapper userAdminWrapper;
  45
  46         @SuppressWarnings("unchecked")
  47         public Object execute(ExecutionEvent event) throws ExecutionException {
  48                 ISelection selection = HandlerUtil.getCurrentSelection(event);
  49                 if (selection.isEmpty())
  50                         return null;
  51
  52                 Iterator<User> it = ((IStructuredSelection) selection).iterator();
  53                 List<User> users = new ArrayList<User>();
  54                 StringBuilder builder = new StringBuilder();
  55
  56                 while (it.hasNext()) {
  57                         User currUser = it.next();
  58                         String userName = UserAdminUtils.getUsername(currUser);
  59                         if (UserAdminUtils.isCurrentUser(currUser)) {
  60                                 MessageDialog.openError(HandlerUtil.getActiveShell(event),
  61                                                 "Deletion forbidden",
  62                                                 "You cannot delete your own user this way.");
  63                                 return null;
  64                         }
  65                         builder.append(userName).append("; ");
  66                         users.add(currUser);
  67                 }
  68
  69                 if (!MessageDialog.openQuestion(
  70                                 HandlerUtil.getActiveShell(event),
  71                                 "Delete Users",
  72                                 "Are you sure that you want to delete these users?\n"
  73                                                 + builder.substring(0, builder.length() - 2)))
  74                         return null;
  75
  76                 userAdminWrapper.beginTransactionIfNeeded();
  77                 UserAdmin userAdmin = userAdminWrapper.getUserAdmin();
  78                 IWorkbenchPage iwp = HandlerUtil.getActiveWorkbenchWindow(event)
  79                                 .getActivePage();
  80
  81                 for (User user : users) {
  82                         String userName = user.getName();
  83                         // TODO find a way to close the editor cleanly if opened. Cannot be
  84                         // done through the UserAdminListeners, it causes a
  85                         // java.util.ConcurrentModificationException because disposing the
  86                         // editor unregisters and disposes the listener
  87                         IEditorPart part = iwp.findEditor(new UserEditorInput(userName));
  88                         if (part != null)
  89                                 iwp.closeEditor(part, false);
  90                         userAdmin.removeRole(userName);
  91                 }
  92                 userAdminWrapper.commitOrNotifyTransactionStateChange();
  93
  94                 for (User user : users) {
  95                         userAdminWrapper.notifyListeners(new UserAdminEvent(null,
  96                                         UserAdminEvent.ROLE_REMOVED, user));
  97                 }
  98                 return null;
  99         }
 100
 101         /* DEPENDENCY INJECTION */
 102         public void setUserAdminWrapper(UserAdminWrapper userAdminWrapper) {
 103                 this.userAdminWrapper = userAdminWrapper;
 104         }
 105 }