52 lines
1.0 KiB
C++
52 lines
1.0 KiB
C++
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/*
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* ValueUpdateAction.hpp
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*
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* Created on: 21 <EFBFBD><EFBFBD><EFBFBD>. 2020 <EFBFBD>.
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* Author: titov
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*/
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#ifndef UMLIBRARY_SCHEMATIC_ACTION_VALUEUPDATEACTION_HPP_
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#define UMLIBRARY_SCHEMATIC_ACTION_VALUEUPDATEACTION_HPP_
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#include "../../systemic/IFunctor.hh"
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#include "../../systemic/IValue.hpp"
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#include "../../systemic/IProcess.hh"
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namespace schematic { namespace functor {
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template<typename ValueType>
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struct ValueUpdateAction : public systemic::IProcess {
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typedef systemic::IValue<ValueType> Value;
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typedef systemic::IFunctor<void> Action;
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Value & value;
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Action & action;
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ValueType previous;
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void process();
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ValueUpdateAction( Value & value, Action & action ) : value(value), action(action), previous(value) {}
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};
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}
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}
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template<typename ValueType>
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inline void schematic::functor::ValueUpdateAction<ValueType>::process() {
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ValueType current = value;
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if( previous != current )
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action();
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previous = current;
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}
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#endif /* UMLIBRARY_SCHEMATIC_ACTION_VALUEUPDATEACTION_HPP_ */
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