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Make it possible to block signals

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This commit is contained in:
Gaute Lindkvist 2020-06-30 07:50:26 +02:00
parent beaf4ebd5a
commit 088f48f41d
1 changed files with 21 additions and 5 deletions
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26
Fwk/AppFwk/cafProjectDataModel/cafPdmCore/cafSignal.h
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@ -66,7 +66,8 @@ template <typename... Args>
class Signal
{
public:
using MemberCallback = std::function<void( const SignalEmitter*, Args... args )>;
using MemberCallback = std::function<void( const SignalEmitter*, Args... args )>;
using MemberCallbackAndActiveFlag = std::pair<MemberCallback, bool>;
public:
Signal( const SignalEmitter* emitter )
@ -84,7 +85,7 @@ public:
// Call method
( observer->*method )( emitter, args... );
};
m_observerCallbacks[observer] = lambda;
m_observerCallbacks[observer] = std::make_pair( lambda, true );
}
void disconnect( SignalObserver* observer ) { m_observerCallbacks.erase( observer ); }
@ -92,15 +93,30 @@ public:
{
for ( auto observerCallbackPair : m_observerCallbacks )
{
observerCallbackPair.second( m_emitter, args... );
if ( observerCallbackPair.second.second )
{
observerCallbackPair.second.first( m_emitter, args... );
}
}
}
void block( SignalObserver* observer )
{
auto it = m_observerCallbacks.find( observer );
CAF_ASSERT( it != m_observerCallbacks.end() );
it->second.second = false;
}
void unblock( SignalObserver* observer )
{
auto it = m_observerCallbacks.find( observer );
CAF_ASSERT( it != m_observerCallbacks.end() );
it->second.second = true;
}
private:
Signal( const Signal& rhs ) = default;
Signal& operator=( const Signal& rhs ) = default;
std::map<SignalObserver*, MemberCallback> m_observerCallbacks;
const SignalEmitter* m_emitter;
std::map<SignalObserver*, MemberCallbackAndActiveFlag> m_observerCallbacks;
const SignalEmitter* m_emitter;
};
} // namespace caf