ChildNode.h

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#ifndef BPMN_ChildNode_H
#define BPMN_ChildNode_H
 
#include <memory>
#include <vector>
#include <optional>
#include "Node.h"
 
namespace BPMN {
 
class SequenceFlow;
 
/**
 * @brief Base class for BPMN elements within a Scope.
 */
class ChildNode : virtual public Node {
  friend class Model;
public:
  ChildNode(XML::bpmn::tBaseElement* element, Scope* parent);
  
  /// @brief Returns the first ancestor node representing type T.
  template<typename T> Node* ancestor() {
    BPMN::Node* node = this;
    while ( node->represents<ChildNode>() ) {
      node = (Node*)node->as<ChildNode>()->parent;
      if ( node->represents<T>() ) {
        return node;
      }
    }
    return nullptr;
  }
 
  /// @brief Returns the first ancestor node representing type T.
  template<typename T> const Node* ancestor() const {
    const BPMN::Node* node = this;
    while ( node->represents<ChildNode>() ) {
      node = (Node*)node->as<ChildNode>()->parent;
      if ( node->represents<T>() ) {
        return node;
      }
    }
    return nullptr;
  }
  
  /// @brief Reference to the parent node.
  Scope* parent;
};
 
} // namespace BPMN
 
#endif // BPMN_ChildNode_H