EventsSystem.h

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#pragma once

#include "swCommonLib/Common/TypesDefinitions.h"
#include "swCommonLib/Common/RTTR.h"

#include "EventProxy.h"
#include "EventHandlers.h"
#include "IEventArgs.h"
#include "RegisteredEvent.h"


#include <mutex>
#include <set>
#include <string>


namespace sw {
namespace gui
{

class UIElement;


template< typename ArgumentType >
using EventHandlerPointer = void ( UIElement::* )( UIElement*, ArgumentType* );


class EventsSystem
{
private:

    EventType                       m_counter;

    std::mutex                      m_registerMutex;
    std::set< RegisteredEvent >     m_registeredEvents;

protected:
public:
                    ~EventsSystem       () = default;

    const RegisteredEvent*      RegisterEvent       ( const char* eventName, RoutingStrategy strategy, TypeID ownerType, TypeID eventTypeId );

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

    bool                        RaiseForwardEvent   ( const RegisteredEvent* eventInfo, UIElement* sender, IEventArgs* arguments );

    template< typename ArgumentType >
    bool                        RaiseEvent          ( const RegisteredEvent* eventInfo, UIElement* sender, ArgumentType* arguments, EventHandlerPointer< ArgumentType > handler );


private:

    template< typename ArgumentType >
    bool            RaiseDirectEvent            ( const RegisteredEvent* eventInfo, UIElement* sender, ArgumentType* arguments, EventHandlerPointer< ArgumentType > handler );

    template< typename ArgumentType >
    bool            RaiseBubbleEvent            ( const RegisteredEvent* eventInfo, UIElement* sender, ArgumentType* arguments, EventHandlerPointer< ArgumentType > handler );

    template< typename ArgumentType >
    bool            RaiseTunnelEvent            ( const RegisteredEvent* eventInfo, UIElement* sender, ArgumentType* arguments, EventHandlerPointer< ArgumentType > handler );

    template< typename ArgumentType >
    void            RaiseTunnelEventForParents  ( const RegisteredEvent* eventInfo, UIElement* sender, ArgumentType* arguments, UIElement* raiseForElement, EventHandlerPointer< ArgumentType > handler );

    template< typename ArgumentType >
    bool            RaiseEventImpl              ( const RegisteredEvent* eventInfo, UIElement* sender, ArgumentType* arguments, EventHandlerPointer< ArgumentType > handler );

public:
    static EventsSystem&        Get ();

private:
    explicit        EventsSystem        ();
};





}   // gui
}   // sw