/**
    * Copyright 2005-2014 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.krad.uif.service.impl;
  
  import org.kuali.rice.krad.bo.AdHocRoutePerson;
  import org.kuali.rice.krad.bo.AdHocRouteWorkgroup;
  import org.kuali.rice.krad.rules.rule.event.AddAdHocRoutePersonEvent;
  import org.kuali.rice.krad.rules.rule.event.AddAdHocRouteWorkgroupEvent;
  import org.kuali.rice.krad.service.KRADServiceLocatorWeb;
  import org.kuali.rice.krad.service.KualiRuleService;
  import org.kuali.rice.krad.uif.view.ViewModel;
  import org.kuali.rice.krad.web.form.DocumentFormBase;
  
  /**
   * View helper extension for document views.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class DocumentViewHelperServiceImpl extends ViewHelperServiceImpl {
      private static final long serialVersionUID = 5311653907592800785L;
  
      private transient KualiRuleService kualiRuleService;
  
      /**
       * Performs validation on the new collection line before it is added to the corresponding collection.
       *
       * @param addLine new line instance to validate
       * @param model object instance that contains the views data
       * @return true if the line is valid and it should be added to the
       * collection, false if it was not valid and should not be added to
       * the collection
       */
      @Override
      protected boolean performAddLineValidation(ViewModel model, Object addLine, String collectionId,
              String collectionPath) {
          boolean isValidLine = super.performAddLineValidation(model, addLine, collectionId, collectionPath);
  
          if (model instanceof DocumentFormBase && addLine instanceof AdHocRoutePerson) {
              DocumentFormBase form = (DocumentFormBase) model;
              isValidLine &= getKualiRuleService().applyRules(new AddAdHocRoutePersonEvent(form.getDocument(),
                      (AdHocRoutePerson) addLine));
          } else if (model instanceof DocumentFormBase && addLine instanceof AdHocRouteWorkgroup) {
              DocumentFormBase form = (DocumentFormBase) model;
              isValidLine &= getKualiRuleService().applyRules(new AddAdHocRouteWorkgroupEvent(form.getDocument(),
                      (AdHocRouteWorkgroup) addLine));
          }
  
          return isValidLine;
      }
  
      /**
       * Retrieves an instance of the rule service.
       *
       * @return Kuali rule service
       */
      protected KualiRuleService getKualiRuleService() {
          if (kualiRuleService == null) {
              kualiRuleService = KRADServiceLocatorWeb.getKualiRuleService();
          }
  
          return this.kualiRuleService;
      }
  }