content: // This file is part of AceWiki.
  // Copyright 2008-2013, AceWiki developers.
  // 
  // AceWiki is free software: you can redistribute it and/or modify it under the terms of the GNU
  // Lesser General Public License as published by the Free Software Foundation, either version 3 of
  // the License, or (at your option) any later version.
  // 
  // AceWiki is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
  // even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  // Lesser General Public License for more details.
  // 
  // You should have received a copy of the GNU Lesser General Public License along with AceWiki. If
  // not, see http://www.gnu.org/licenses/.
  
  package ch.uzh.ifi.attempto.acewiki.core;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import ch.uzh.ifi.attempto.echocomp.LocaleResources;
  
  /**
   * This class is used to modify or create topics.
   * 
   * @author Kaarel Kaljurand
   * @author Tobias Kuhn
   */
  public class TopicChanger implements LexiconChanger {
  
  	public String getDescription() {
  		return LocaleResources.getString("acewiki_ontoelement_topicdesc");
  	}
  
  	public List<LexiconDetail> getDetails(OntologyElement el) {
  		GeneralTopic topic = (GeneralTopic) el;
  		List<LexiconDetail> l = new ArrayList<LexiconDetail>();
  		l.add(new LexiconDetail(
  				LocaleResources.getString("acewiki_ontoelement_topicname"),
  				LocaleResources.getString("acewiki_ontoelement_topiceg"),
  				topic.getWord()
  				));
  		return l;
  	}
  
  	public void save(OntologyElement el, int wordNumber, List<Object> newValues, Ontology ontology)
  			throws InvalidWordException {
  		GeneralTopic topic = (GeneralTopic) el;
  		String word = (String) newValues.get(0);
  		OntologyElement oe = ontology.getElement(word);
  		if (oe != null && oe != topic) {
  			throw new InvalidWordException(LocaleResources.getString("acewiki_error_wordexists"));
  		}
  		if (word.isEmpty()) {
  			throw new InvalidWordException(LocaleResources.getString("acewiki_error_emptyrequiredfield"));
  		}
  		ontology.change(topic, newValues.get(0).toString());
  	}
  
  }
  