/* Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
 * 
 * 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.activiti.bpmn.converter.child;

import javax.xml.stream.XMLStreamReader;

import org.activiti.bpmn.converter.util.BpmnXMLUtil;
import org.activiti.bpmn.model.BaseElement;
import org.activiti.bpmn.model.BpmnModel;
import org.activiti.bpmn.model.Event;
import org.activiti.bpmn.model.SignalEventDefinition;
import org.apache.commons.lang3.StringUtils;

/**
 * @author Tijs Rademakers
 */
public class SignalEventDefinitionParser extends BaseChildElementParser {

  public String getElementName() {
    return ELEMENT_EVENT_SIGNALDEFINITION;
  }
  
  public void parseChildElement(XMLStreamReader xtr, BaseElement parentElement, BpmnModel model) throws Exception {
    if (parentElement instanceof Event == false) return;
    
    SignalEventDefinition eventDefinition = new SignalEventDefinition();
    BpmnXMLUtil.addXMLLocation(eventDefinition, xtr);
    eventDefinition.setSignalRef(xtr.getAttributeValue(null, ATTRIBUTE_SIGNAL_REF));
    if (StringUtils.isNotEmpty(xtr.getAttributeValue(ACTIVITI_EXTENSIONS_NAMESPACE, ATTRIBUTE_ACTIVITY_ASYNCHRONOUS))) {
      eventDefinition.setAsync(Boolean.parseBoolean(xtr.getAttributeValue(ACTIVITI_EXTENSIONS_NAMESPACE, ATTRIBUTE_ACTIVITY_ASYNCHRONOUS)));
    }
    
    if (StringUtils.isEmpty(eventDefinition.getSignalRef())) {
      model.addProblem("signalEventDefinition does not have required property 'signalRef'", xtr);
    }
    
    ((Event) parentElement).getEventDefinitions().add(eventDefinition);
  }
}