/*

  * Copyright 2005-2008 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.edl.impl.components;

 import java.util.Iterator;

 import java.util.List;

 import org.kuali.rice.edl.impl.EDLContext;

 import org.kuali.rice.edl.impl.RequestParser;

 import org.kuali.rice.kew.api.WorkflowDocument;

 import org.kuali.rice.kew.api.document.PropertyDefinition;

 import org.kuali.rice.kew.api.document.WorkflowAttributeDefinition;

 import org.kuali.rice.kew.api.document.WorkflowAttributeValidationError;

 import org.w3c.dom.Element;

 /**

  * Populates workflow rule attributes associated with the current configElement.

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  * 

  */

 public class AttributeEDLConfigComponent extends SimpleWorkflowEDLConfigComponent {

     public List getMatchingParams(Element originalConfigElement, RequestParser requestParser, EDLContext edlContext) {

         List matchingParams = super.getMatchingParams(originalConfigElement, requestParser, edlContext);

         // we don't want to clear the attribute content if they are just opening up the document to view it!

         if (!edlContext.getUserAction().isLoadAction()) {

             String attributeName = originalConfigElement.getAttribute("attributeName");

             String attributePropertyName = originalConfigElement.getAttribute("name");

             WorkflowDocument document = (WorkflowDocument) requestParser

                     .getAttribute(RequestParser.WORKFLOW_DOCUMENT_SESSION_KEY);

             // clear attribute content so that duplicate attribute values are not added during submission of a new EDL form values version

             document.clearAttributeContent();

             WorkflowAttributeDefinition.Builder attributeDefBuilder = getWorkflowAttributeDefinitionVO(attributeName, document);

             for (Iterator iter = matchingParams.iterator(); iter.hasNext();) {

                 MatchingParam param = (MatchingParam) iter.next();

                 PropertyDefinition property = attributeDefBuilder.getPropertyDefinition(attributePropertyName);

                 //if the prop doesn't exist create it and add it to the definition otherwise update the property value

                 if (property == null) {

                     property = PropertyDefinition.create(attributePropertyName, param.getParamValue());

                 } else {

                     // modify the current property

                     attributeDefBuilder.getPropertyDefinitions().remove(property);

                     property = PropertyDefinition.create(property.getName(), param.getParamValue());

                 }

                 attributeDefBuilder.addPropertyDefinition(property);

             }

             WorkflowAttributeDefinition attributeDef = attributeDefBuilder.build();

             document.addAttributeDefinition(attributeDef);

             // validate if they are taking an action on the document (i.e. it's annotatable)

             if (edlContext.getUserAction().isValidatableAction()) {

                 List<WorkflowAttributeValidationError> errors = document.validateAttributeDefinition(attributeDef);

                 if (!errors.isEmpty()) {

                     getEdlContext().setInError(true);

                 }

                 for (WorkflowAttributeValidationError error : errors) {

                     MatchingParam param = getMatchingParam(matchingParams, error.getKey());

                     // if it doesn't match a param, then this is a global error

                     if (param == null) {

                         List globalErrors = (List) getEdlContext().getRequestParser().getAttribute(

                                     RequestParser.GLOBAL_ERRORS_KEY);

                         globalErrors.add(error.getMessage());

                     } else {

                         param.setError(Boolean.TRUE);

                         param.setErrorMessage(error.getMessage());

                     }

                 }

             }

         }

         return matchingParams;

     }

     private WorkflowAttributeDefinition.Builder getWorkflowAttributeDefinitionVO(String attributeName, WorkflowDocument document) {

         for (WorkflowAttributeDefinition attributeDefinition : document.getAttributeDefinitions()) {

             if (attributeDefinition.getAttributeName().equals(attributeName)) {

                 return WorkflowAttributeDefinition.Builder.create(attributeDefinition);

             }

         }

         return WorkflowAttributeDefinition.Builder.create(attributeName);

     }

     private MatchingParam getMatchingParam(List matchingParams, String name) {

         for (Iterator iterator = matchingParams.iterator(); iterator.hasNext();) {

             MatchingParam param = (MatchingParam) iterator.next();

             if (param.getParamName().equals(name)) {

                 return param;

             }

         }

         return null;

     }

 }