package org.kuali.student.core.krms.tree;
   
   import org.apache.commons.lang.StringUtils;
   import org.kuali.rice.krms.dto.PropositionEditor;
   import org.kuali.rice.krms.tree.RuleEditTreeBuilder;
   import org.kuali.rice.krms.util.NaturalLanguageHelper;
   import org.kuali.student.r1.common.rice.StudentIdentityConstants;
   import org.kuali.student.r2.core.constants.KSKRMSServiceConstants;
   
  import java.util.Map;
  
  /**
   * Created with IntelliJ IDEA.
   * User: SW Genis
   * Date: 2013/07/18
   * Time: 5:21 PM
   * To change this template use File | Settings | File Templates.
   */
  public class KSRuleEditTreeBuilder extends RuleEditTreeBuilder{
  
      private NaturalLanguageHelper nlHelper;
  
      protected String getDescription(PropositionEditor proposition) {
          if (proposition == null) {
              return StringUtils.EMPTY;
          }
  
          //Get the natural language for the usage key.
          Map<String, String> nlMap = proposition.getNaturalLanguage();
          if(!nlMap.containsKey(this.getNaturalLanguageUsageKey())){
              this.getNlHelper().setNaturalLanguageForUsage(proposition, this.getNaturalLanguageUsageKey(), StudentIdentityConstants.KS_NAMESPACE_CD);
          }
  
          //Return empty string if nl does is null.
          String description = nlMap.get(this.getNaturalLanguageUsageKey());
          if (description==null){
              return StringUtils.EMPTY;
          }
  
          return description;
      }
  
      public String getNaturalLanguageUsageKey(){
          return KSKRMSServiceConstants.KRMS_NL_RULE_EDIT;
      }
  
      public NaturalLanguageHelper getNlHelper() {
          return nlHelper;
      }
  
      public void setNlHelper(NaturalLanguageHelper nlHelper) {
          this.nlHelper = nlHelper;
      }
  
  }