/**
    * Copyright 2005-2013 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.
   */
  package org.kuali.rice.krms.tree;
  
  import org.apache.commons.lang.StringEscapeUtils;
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.util.tree.Node;
  import org.kuali.rice.core.api.util.tree.Tree;
  import org.kuali.rice.krms.api.repository.proposition.PropositionDefinitionContract;
  import org.kuali.rice.krms.dto.PropositionEditor;
  import org.kuali.rice.krms.dto.RuleEditor;
  import org.kuali.rice.krms.tree.node.CompareTreeNode;
  import org.kuali.rice.krms.util.NaturalLanguageHelper;
  
  import java.util.Map;
  
  /**
   * @author Kuali Student Team
   */
  public abstract class AbstractTreeBuilder implements TreeBuilder {
  
      protected String buildNodeLabel(PropositionEditor prop){
          return StringEscapeUtils.escapeHtml(this.getDescription(prop));
      }
  
      protected String getDescription(PropositionEditor proposition) {
          if (proposition == null) {
              return StringUtils.EMPTY;
          }
  
          //Get the natural language from the map
          Map<String, String> nlMap = proposition.getNaturalLanguage();
          String description = nlMap.get(this.getNaturalLanguageUsageKey());
          if (description==null){
              return StringUtils.EMPTY;
          }
  
          return description;
      }
  
      protected String getPropositionPrefix(PropositionEditor prop){
          return "<b>" + prop.getKey() + ".</b> ";
      }
  
      public abstract String getNaturalLanguageUsageKey();
  
      protected void addNodeType(Node node, String type){
          if ((node.getNodeType()==null)||(node.getNodeType().length()==0)){
              node.setNodeType(type);
          } else {
              node.setNodeType(node.getNodeType() + " " + type);
          }
      }
  
  }