ConfigObserver.cpp

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// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2018 ISIS Rutherford Appleton Laboratory UKRI,
//   NScD Oak Ridge National Laboratory, European Spallation Source,
//   Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
// SPDX - License - Identifier: GPL - 3.0 +
#include "MantidKernel/ConfigObserver.h"
#include "MantidKernel/ConfigService.h"
 
namespace Mantid::Kernel {
ConfigObserver::ConfigObserver() : m_valueChangeListener(*this, &ConfigObserver::notifyValueChanged) {
  ConfigService::Instance().addObserver(m_valueChangeListener);
}
 
ConfigObserver::ConfigObserver(const ConfigObserver &other)
    : m_valueChangeListener(*this, &ConfigObserver::notifyValueChanged) {
  UNUSED_ARG(other);
  ConfigService::Instance().addObserver(m_valueChangeListener);
}
 
ConfigObserver &ConfigObserver::operator=(const ConfigObserver &other) {
  UNUSED_ARG(other);
  return *this;
}
 
ConfigObserver::~ConfigObserver() noexcept { ConfigService::Instance().removeObserver(m_valueChangeListener); }
 
void ConfigObserver::notifyValueChanged(const std::string &name, const std::string &newValue,
                                        const std::string &oldValue) {
  onValueChanged(name, newValue, oldValue);
}
 
void ConfigObserver::notifyValueChanged(ConfigValChangeNotification_ptr notification) {
  notifyValueChanged(notification->key(), notification->curValue(), notification->preValue());
}
} // namespace Mantid::Kernel