EventHandlers.h

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#pragma once

#include "DelegateContainer.h"
#include "IEventArgs.h"


namespace sw {
namespace gui
{

struct IEventArgs;
struct RegisteredEvent;


class EventHandlers
{
    template< typename EventArgType > friend class EventProxy;
private:

    DelegatesContainerBaseOPtr      m_delegatesList;

public:
    explicit            EventHandlers();

    DelegatesContainerBase*     FindContainer       ( EventType eventID );

private:

    DelegatesContainerBase*     AddContainer        ( DelegatesContainerBaseOPtr&& container );

    bool                        RemoveContainer     ( EventType eventID );

    bool                        RaiseEvent          ( const RegisteredEvent* eventInfo, UIElement* sender, IEventArgsOPtr&& arguments );

    
private:
    // Internal

    bool                        Exists              ( EventType eventID );
};




}   // gui
}   // sw

#define REGISTER_EVENT_DECLARATION( name, strategy, className, argsType )               \
static const ::sw::gui::RegisteredEvent* s ## name;                                     \
::sw::gui::EventProxy< argsType >       name() { return ::sw::gui::EventProxy< argsType >( m_eventHandlers, s ## name ); }

#define REGISTER_EVENT_DEFINITION( name, strategy, className, argsType )                \
const ::sw::gui::RegisteredEvent* className::s ## name = ::sw::gui::EventsSystem::Get().RegisterEvent( #name, ::sw::gui::strategy, TypeID::get< className >(), TypeID::get< argsType >() );