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#ifndef _SENDERDATAEVENT_H
#define _SENDERDATAEVENT_H
#ifdef _WIN32
#define SDE_CC __stdcall
#else
#define SDE_CC
#endif
//----------------------------------------------------------------------------
template <typename SenderT, typename DataT>
class EventHandler
{
public:
virtual void notify(SenderT sender, DataT data) = 0;
virtual ~EventHandler()
{
}
};
//----------------------------------------------------------------------------
template <typename ListenerT, typename SenderT, typename DataT>
class InstanceEventHandler : public EventHandler<SenderT, DataT>
{
typedef void (ListenerT::*PtrMember)(SenderT, DataT);
ListenerT* m_object;
PtrMember m_member;
public:
InstanceEventHandler(ListenerT* object, PtrMember member)
: m_object(object), m_member(member)
{
}
void notify(SenderT sender, DataT data)
{
(m_object->*m_member)(sender, data);
}
};
//----------------------------------------------------------------------------
template <typename SenderT, typename DataT>
class CallbackEventHandler : public EventHandler<SenderT, DataT>
{
typedef void (SDE_CC *CallbackT)(SenderT, DataT);
CallbackT Callback;
public:
CallbackEventHandler(CallbackT callback)
: Callback(callback)
{
}
void notify(SenderT sender, DataT data)
{
(*Callback)(sender, data);
}
};
//----------------------------------------------------------------------------
typedef unsigned int EventHandlerId;
#include <map>
class AbstractVehicle;
//----------------------------------------------------------------------------
template <typename SenderT=AbstractVehicle*, typename DataT=unsigned int>
class SenderDataEvent
{
typedef std::map<EventHandlerId, EventHandler<SenderT, DataT> *> HandlersMap;
HandlersMap Handlers;
EventHandlerId NextHandlerId;
public:
SenderDataEvent()
: NextHandlerId(1) {}
template <typename ListenerT>
EventHandlerId attach(ListenerT* object, void (ListenerT::*member)(SenderT, DataT))
{
Handlers[NextHandlerId] = new InstanceEventHandler<ListenerT, SenderT, DataT>(object, member);
NextHandlerId++;
return NextHandlerId-1;
}
EventHandlerId attach(void (SDE_CC *callback)(SenderT, DataT))
{
Handlers[NextHandlerId] = new CallbackEventHandler<SenderT, DataT>(callback);
NextHandlerId++;
return NextHandlerId-1;
}
bool detach(EventHandlerId id)
{
typename HandlersMap::iterator it = Handlers.find(id);
if (it == Handlers.end())
return false;
delete it->second;
Handlers.erase(it);
return true;
}
void Invoke(SenderT sender, DataT data)
{
typename HandlersMap::iterator it = Handlers.begin();
for(; it != Handlers.end(); it++)
{
it->second->notify(sender, data);
}
}
};
#endif
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