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.child;
  
  import static java.util.Collections.unmodifiableList;
  
  import java.util.LinkedList;
  import java.util.List;
  import javax.xml.stream.XMLStreamReader;
  import org.activiti.bpmn.constants.BpmnXMLConstants;
  import org.activiti.bpmn.model.BaseElement;
  import org.activiti.bpmn.model.BpmnModel;
  import org.activiti.bpmn.model.ExtensionAttribute;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
  
   */
  public abstract class BaseChildElementParser implements BpmnXMLConstants {
  
      protected static final Logger LOGGER = LoggerFactory.getLogger(BaseChildElementParser.class);
  
      public abstract String getElementName();
  
      public abstract void parseChildElement(XMLStreamReader xtr, BaseElement parentElement, BpmnModel model)
          throws Exception;
  
      protected void parseChildElements(
          XMLStreamReader xtr,
          BaseElement parentElement,
          BpmnModel model,
          BaseChildElementParser parser
      ) throws Exception {
          boolean readyWithChildElements = false;
          while (!readyWithChildElements && xtr.hasNext()) {
              xtr.next();
              if (xtr.isStartElement()) {
                  if (parser.getElementName().equals(xtr.getLocalName())) {
                      parser.parseChildElement(xtr, parentElement, model);
                  }
              } else if (xtr.isEndElement() && getElementName().equalsIgnoreCase(xtr.getLocalName())) {
                  readyWithChildElements = true;
              }
          }
      }
  
      public boolean accepts(BaseElement element) {
          return element != null;
      }
  
      protected List<ExtensionAttribute> parseExtensionAttributes(
          XMLStreamReader xtr,
          BaseElement parentElement,
          BpmnModel model
      ) {
          List<ExtensionAttribute> attributes = new LinkedList<>();
  
          for (int i = 0; i < xtr.getAttributeCount(); i++) {
              if (ACTIVITI_EXTENSIONS_NAMESPACE.equals(xtr.getAttributeNamespace(i))) {
                  ExtensionAttribute attr = new ExtensionAttribute(
                      ACTIVITI_EXTENSIONS_NAMESPACE,
                      xtr.getAttributeLocalName(i)
                  );
                  attr.setValue(xtr.getAttributeValue(i));
                  attributes.add(attr);
              }
          }
  
          return unmodifiableList(attributes);
      }
  }
  