core/src/main/java/org/apache/myfaces/tobago/el/UserWrapper.java

package org.apache.myfaces.tobago.el;

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import javax.faces.context.FacesContext;
import java.security.Principal;
import java.util.Collection;
import java.util.Map;
import java.util.Set;

public class UserWrapper {

  private static final Log LOG = LogFactory.getLog(UserWrapper.class);

  private Map roles;

  public UserWrapper() {
    roles = new RolesMap();
  }

  public Principal getPrincipal() {
    FacesContext facesContext = FacesContext.getCurrentInstance();
    Principal principal = facesContext.getExternalContext().getUserPrincipal();
    if (LOG.isDebugEnabled()) {
      LOG.debug("getPrincipal(): " + principal);
    }
    return principal;
  }

  public Map getRoles() {
    return roles;
  }

  private static class RolesMap implements Map {

    public Object get(Object key) {
      String role = (String) key;
      FacesContext facesContext = FacesContext.getCurrentInstance();
      boolean inRole = facesContext.getExternalContext().isUserInRole(role);
      if (LOG.isDebugEnabled()) {
        LOG.debug("is in role '" + key + "': " + inRole);
      }
      return Boolean.valueOf(inRole);
    }

    public int size() {
      throw new UnsupportedOperationException();
    }

    public void clear() {
      throw new UnsupportedOperationException();
    }

    public boolean isEmpty() {
      throw new UnsupportedOperationException();
    }

    public boolean containsKey(Object key) {
      throw new UnsupportedOperationException();
    }

    public boolean containsValue(Object value) {
      throw new UnsupportedOperationException();
    }

    public Collection values() {
      throw new UnsupportedOperationException();
    }

    public void putAll(Map t) {
      throw new UnsupportedOperationException();
    }

    public Set entrySet() {
      throw new UnsupportedOperationException();
    }

    public Set keySet() {
      throw new UnsupportedOperationException();
    }

    public Object remove(Object key) {
      throw new UnsupportedOperationException();
    }

    public Object put(Object key, Object value) {
      throw new UnsupportedOperationException();
    }
  }
}