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qt5-legatus-legacy/Lts/Viewer/SituationMap/Common/simple_value.h
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2026-08-13 18:33:10 +02:00

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/**
* @RDE_HEADER@
* Helper class for storing a simple value and an implizit changed flag
* $Id$
* $HeadURL$
* $Author$
*/
#pragma once
// Qt
#include <sstream>
//----------------------------------------------------------------------------
namespace SituationMap
{
/*! \class SimpleValue
\brief Simple storing fo values
*/
template <class TYPE> class SimpleValue
{
protected:
TYPE m_value = TYPE(); // '{}' to initialize the member (and avoid unconditional jumps@valgrind)
bool m_changed = true;
public:
SimpleValue() = default;
// cppcheck-suppress noExplicitConstructor
SimpleValue(const TYPE &value) // should not be declared explicit to avoid additional writing stuff to cast values
: m_value(value)
{}
SimpleValue<TYPE> &operator=(const TYPE &newValue)
{
if (this->m_value != newValue)
{
this->m_value = newValue;
m_changed = true;
}
return *this;
}
const TYPE &operator()() const
{
return this->m_value;
}
const TYPE &value() const
{
return this->m_value;
}
TYPE &refValue()
{
m_changed = true;
return this->m_value;
}
const TYPE &refValue() const
{
return this->m_value;
}
bool changed() const
{
return m_changed;
}
void reset()
{
m_changed = false;
}
void setChanged()
{
m_changed = true;
}
friend std::ostream &operator<<(std::ostream &stream,
const SimpleValue &simpleVal)
{
stream << simpleVal.value();
return stream;
}
};
} // namespace SituationMap