YiEventTarget.h

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// © You i Labs Inc. 2000-2017. All rights reserved.
#ifndef _YI_EVENT_TARGET_H_
#define _YI_EVENT_TARGET_H_

#include "binding/YiScriptableRTTIObject.h"
#include "framework/YiPredef.h"
#include "event/YiEvent.h"

#include <memory>

class CYIEventHandler;
class CYIEventDispatcher;

typedef enum
{
    YI_SPECIAL_EVENT_TARGET_NONE             = 0x00,
    YI_SPECIAL_EVENT_TARGET_LAST_MOVE        = 0x01,
    YI_SPECIAL_EVENT_TARGET_LAST_DOWN        = 0x02,
    YI_SPECIAL_EVENT_TARGET_POINTER_CAPTURE  = 0x04,
    YI_SPECIAL_EVENT_TARGET_KEYBOARD_CAPTURE = 0x08,
    YI_SPECIAL_EVENT_TARGET_ROOT             = 0x10,
    YI_SPECIAL_EVENT_TARGET_NOPICK           = 0x20,
    YI_SPECIAL_EVENT_TARGET_TRACKPAD_CAPTURE = 0x40

} YI_SPECIAL_EVENT_TARGET_TYPE;


class CYIEventTarget : public CYIScriptableRTTIObject
{
    
public:
    
    enum EVENT_PHASE
    {
        BUBBLE,  
        CAPTURE 
    };

    CYIEventTarget();
    virtual ~CYIEventTarget();

    bool AddEventListener(YI_EVENT_TYPE eEventType, CYIEventHandler *pListener, EVENT_PHASE ePhase = BUBBLE);

    bool RemoveEventListener(YI_EVENT_TYPE eEventType, CYIEventHandler *pListener, EVENT_PHASE ePhase = BUBBLE);

    virtual bool ProcessEvent(const std::shared_ptr<CYIEventDispatcher> &pDispatcher, CYIEvent *pEvent);

    void SetSpecialTypeFlag(YI_SPECIAL_EVENT_TARGET_TYPE eType);
    void ClearSpecialTypeFlag(YI_SPECIAL_EVENT_TARGET_TYPE eType);
    YI_SPECIAL_EVENT_TARGET_TYPE GetSpecialTypes() const;

private:
    class EventListenerEntry
    {
    public:
        EventListenerEntry(YI_EVENT_TYPE eEventType, CYIEventHandler *pListener, EVENT_PHASE eStatus);
        bool operator==(const EventListenerEntry& rhs) const;

        YI_EVENT_TYPE     m_eEventType;
        EVENT_PHASE       m_ePhase;
        CYIEventHandler  *m_pListener;
        
    };

protected:
    YI_SPECIAL_EVENT_TARGET_TYPE    m_eSpecialTypes;
    std::vector<EventListenerEntry> m_listeners;

private:
    YI_TYPE_BASES_WITH_SCRIPTABLE_BASE(CYIEventTarget)
};

#endif // _YI_EVENT_TARGET_H_