error_observer.hpp

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#ifndef RAM_PATH_PLANNING_ERROR_OBSERVER_HPP
#define RAM_PATH_PLANNING_ERROR_OBSERVER_HPP

#include <string>

#include <vtkCommand.h>

class ErrorObserver : public vtkCommand
{
public:
  ErrorObserver() :
          Error(false),
          Warning(false),
          ErrorMessage(""),
          WarningMessage("")
  {
  }

  static ErrorObserver *New()
  {
    return new ErrorObserver;
  }

  bool inline GetError() const
  {
    return Error;
  }

  bool inline GetWarning() const
  {
    return Warning;
  }

  void inline Clear()
  {
    Error = false;
    Warning = false;
    ErrorMessage = "";
    WarningMessage = "";
  }

  virtual void Execute(vtkObject *vtkNotUsed(caller),
                       unsigned long event,
                       void * calldata)
  {
    switch (event)
    {
      case vtkCommand::ErrorEvent:
        ErrorMessage += static_cast<char*>(calldata);
        Error = true;
        break;
      case vtkCommand::WarningEvent:
        WarningMessage += static_cast<char*>(calldata);
        Warning = true;
        break;
    }
  }

  inline std::string GetErrorMessage() const
  {
    return ErrorMessage;
  }

  inline std::string GetWarningMessage() const
  {
    return WarningMessage;
  }

private:
  bool Error;
  bool Warning;
  std::string ErrorMessage;
  std::string WarningMessage;
};

#endif