content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * 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.engine.impl.bpmn.parser.handler;
  
  import org.activiti.bpmn.model.BaseElement;
  import org.activiti.bpmn.model.BpmnModel;
  import org.activiti.bpmn.model.ErrorEventDefinition;
  import org.activiti.bpmn.model.EventDefinition;
  import org.activiti.bpmn.model.EventSubProcess;
  import org.activiti.bpmn.model.Message;
  import org.activiti.bpmn.model.MessageEventDefinition;
  import org.activiti.bpmn.model.StartEvent;
  import org.activiti.engine.impl.bpmn.parser.BpmnParse;
  import org.activiti.engine.impl.persistence.entity.ProcessDefinitionEntity;
  import org.activiti.engine.impl.util.CollectionUtil;
  import org.apache.commons.lang3.StringUtils;
  
  /**
  
  
   */
  public class StartEventParseHandler extends AbstractActivityBpmnParseHandler<StartEvent> {
  
      @Override
      public Class<? extends BaseElement> getHandledType() {
          return StartEvent.class;
      }
  
      @Override
      protected void executeParse(BpmnParse bpmnParse, StartEvent element) {
          if (element.getSubProcess() != null && element.getSubProcess() instanceof EventSubProcess) {
              if (CollectionUtil.isNotEmpty(element.getEventDefinitions())) {
                  EventDefinition eventDefinition = element.getEventDefinitions().get(0);
                  if (eventDefinition instanceof MessageEventDefinition) {
                      MessageEventDefinition messageDefinition = (MessageEventDefinition) eventDefinition;
                      BpmnModel bpmnModel = bpmnParse.getBpmnModel();
                      String messageRef = messageDefinition.getMessageRef();
                      if (bpmnModel.containsMessageId(messageRef)) {
                          Message message = bpmnModel.getMessage(messageRef);
                          messageDefinition.setMessageRef(message.getName());
                          messageDefinition.setExtensionElements(message.getExtensionElements());
                      }
                      element.setBehavior(
                          bpmnParse
                              .getActivityBehaviorFactory()
                              .createEventSubProcessMessageStartEventActivityBehavior(element, messageDefinition)
                      );
                  } else if (eventDefinition instanceof ErrorEventDefinition) {
                      element.setBehavior(
                          bpmnParse
                              .getActivityBehaviorFactory()
                              .createEventSubProcessErrorStartEventActivityBehavior(element)
                      );
                  }
              }
          } else if (CollectionUtil.isEmpty(element.getEventDefinitions())) {
              element.setBehavior(bpmnParse.getActivityBehaviorFactory().createNoneStartEventActivityBehavior(element));
          }
  
          if (
              element.getSubProcess() == null &&
              (CollectionUtil.isEmpty(element.getEventDefinitions()) ||
                  bpmnParse.getCurrentProcess().getInitialFlowElement() == null)
          ) {
              bpmnParse.getCurrentProcess().setInitialFlowElement(element);
          }
  
          checkStartFormKey(bpmnParse.getCurrentProcessDefinition(), element);
      }
  
      private void checkStartFormKey(ProcessDefinitionEntity processDefinition, StartEvent startEvent) {
          if (StringUtils.isNotEmpty(startEvent.getFormKey())) {
              processDefinition.setStartFormKey(true);
          }
      }
  }
  