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.bpmn.converter.parser;
  
  import java.util.List;
  import javax.xml.stream.XMLStreamReader;
  import org.activiti.bpmn.constants.BpmnXMLConstants;
  import org.activiti.bpmn.converter.child.ActivitiEventListenerParser;
  import org.activiti.bpmn.converter.child.ExecutionListenerParser;
  import org.activiti.bpmn.converter.util.BpmnXMLUtil;
  import org.activiti.bpmn.model.BaseElement;
  import org.activiti.bpmn.model.BpmnModel;
  import org.activiti.bpmn.model.ExtensionElement;
  import org.activiti.bpmn.model.Process;
  import org.activiti.bpmn.model.SubProcess;
  
  /**
  
   */
  public class ExtensionElementsParser implements BpmnXMLConstants {
  
      public void parse(
          XMLStreamReader xtr,
          List<SubProcess> activeSubProcessList,
          Process activeProcess,
          BpmnModel model
      ) throws Exception {
          BaseElement parentElement = null;
          if (!activeSubProcessList.isEmpty()) {
              parentElement = activeSubProcessList.get(activeSubProcessList.size() - 1);
          } else {
              parentElement = activeProcess;
          }
  
          boolean readyWithChildElements = false;
          while (readyWithChildElements == false && xtr.hasNext()) {
              xtr.next();
              if (xtr.isStartElement()) {
                  if (ELEMENT_EXECUTION_LISTENER.equals(xtr.getLocalName())) {
                      new ExecutionListenerParser().parseChildElement(xtr, parentElement, model);
                  } else if (ELEMENT_EVENT_LISTENER.equals(xtr.getLocalName())) {
                      new ActivitiEventListenerParser().parseChildElement(xtr, parentElement, model);
                  } else if (ELEMENT_POTENTIAL_STARTER.equals(xtr.getLocalName())) {
                      new PotentialStarterParser().parse(xtr, activeProcess);
                  } else {
                      ExtensionElement extensionElement = BpmnXMLUtil.parseExtensionElement(xtr);
                      if (parentElement != null) {
                          parentElement.addExtensionElement(extensionElement);
                      }
                  }
              } else if (xtr.isEndElement()) {
                  if (ELEMENT_EXTENSIONS.equals(xtr.getLocalName())) {
                      readyWithChildElements = true;
                  }
              }
          }
      }
  }
  