content: /*
   * Copyright (C) 2013 Glyptodon LLC
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  package org.glyptodon.guacamole.net.basic.properties;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import org.glyptodon.guacamole.GuacamoleException;
  import org.glyptodon.guacamole.net.basic.GuacamoleClassLoader;
  import org.glyptodon.guacamole.properties.GuacamoleProperty;
  
  /**
   * A GuacamoleProperty whose value is a comma-separated list of class names,
   * where each class will be used as a listener for events.
   *
   * @author Michael Jumper
   */
  public abstract class EventListenersProperty implements GuacamoleProperty<Collection<Class>> {
  
      @Override
      public Collection<Class> parseValue(String classNameList) throws GuacamoleException {
  
          // If no property provided, return null.
          if (classNameList == null)
              return null;
  
          // Parse list
          String[] classNames = classNameList.split(",[\\s]*");
  
          // Fill list of classes
          Collection<Class> listeners = new ArrayList<Class>();
          try {
  
              // Load all classes in list
              for (String className : classNames) {
                  Class clazz = GuacamoleClassLoader.getInstance().loadClass(className);
                  listeners.add(clazz);
              }
  
          }
          catch (ClassNotFoundException e) {
              throw new GuacamoleException("Listener class not found.", e);
          }
          catch (SecurityException e) {
              throw new GuacamoleException("Security settings prevent loading of listener class.", e);
          }
  
          return listeners;
  
      }
  
  }
  
  