#pragma once
#include "KObject.h"
#include "KTypes.h"
//#include <string>

class KUIWnd;
class KViewportObject;
class KSpritePrimitive;

class KUIDragAndDropObject : public KObject
{
public:
	KUIDragAndDropObject()  {}
	~KUIDragAndDropObject() {}

	void Set(KUIWnd* _pSenderParent, KUIWnd* _pSenderControl)
	{
		m_pSenderParent = _pSenderParent;
		m_pSenderControl = _pSenderControl;
	}


	KUIWnd* GetParent()	{ return m_pSenderParent;}
	KUIWnd* GetControl()	{ return m_pSenderControl;}

	LPCSTR GetParentID();
	LPCSTR GetControlID();		

protected:
	KUIWnd*			m_pSenderParent;
	KUIWnd*			m_pSenderControl;
};


class KUIDragAndDropRenderer : public KObject
{
public:
	KUIDragAndDropRenderer()			{}
	virtual ~KUIDragAndDropRenderer()	{}
	
	virtual void Render(KViewportObject* pViewport) = 0;
	void SetPosition(int x, int y)
	{
		m_ptPos.x = x;
		m_ptPos.y = y;
	}

protected:
	KPoint	m_ptPos;
};

/// 가장 일반적으로 쓰일것.
class KUIDragAndDropNormalIconRenderer : public KUIDragAndDropRenderer
{
public:
	KUIDragAndDropNormalIconRenderer();
	virtual ~KUIDragAndDropNormalIconRenderer();

	void SetMaxState(DWORD dwMaxState);
	void SetStateIcon(LPCSTR lpszSprName, LPCSTR lpszAniName, int nFrameIndex, DWORD dwState);
	void EnableState(DWORD dwState, bool bEnable);

	virtual void Render(KViewportObject* pViewport);

protected:
	DWORD				m_dwMaxState;
	KSpritePrimitive*	m_pSpritePrimitiveArray;
};


class KUIDragAndDropNullRenderer : public KUIDragAndDropRenderer	// 아무것도 그리지 않는 렌더러
{
public:
	KUIDragAndDropNullRenderer()			{}
	virtual ~KUIDragAndDropNullRenderer()	{}
	
	virtual void Render(KViewportObject* pViewport) {}

	static KUIDragAndDropNullRenderer*	GetInstance() { static KUIDragAndDropNullRenderer inst; return &inst; }
};


/// "UI_CANDROP"
struct KUIDragAndDropMessage : public KArg
{
	KUIDragAndDropMessage()
	{
		pObject = NULL;
	}

	// Output

	std::string		sRecvDropParentID;		 ///< Drop 받을 Control의 Parent의 ID
	std::string		sRecvDropControlID;		 ///< Drop 받을 Control의 ID

	// Input
	KPoint					ptDropPos;
	KUIDragAndDropObject*	pObject;
};


/// "UI_ON_CHECK_DROP"
struct KUIOnCheckDropMessage : public KArg
{
	std::string sSendDropControlID;
	std::string sRecvDropControlID;
	std::string sRecvDropParentID;
	KPoint		ptDropPos;

};

/// "UI_BEGIN_DRAG"
struct KUIBeginDragMessage : public KArg
{
	KUIBeginDragMessage()
	{
		pDragAndDropRenderer = NULL;
	}
	std::string	sDragControlID;
	KUIDragAndDropNormalIconRenderer*	pDragAndDropRenderer;
};

/** "UI_RECV_DROP"
	"UI_SEND_DROP" */
struct KUISendRecvDropMessage : public KArg
{
	// 2011.04.26 - servantes
	KUISendRecvDropMessage()
	{
		sRecvDropParentID  = "";
		sRecvDropControlID = "";
		sSendDropParentID  = "";
		sSendDropControlID = "";
		ptDropPos.x        = ptDropPos.y = 0;
	}

	KUISendRecvDropMessage( const KUIDragAndDropMessage& msg)
	{
		sRecvDropParentID = msg.sRecvDropParentID;
		sRecvDropControlID = msg.sRecvDropControlID;

		sSendDropParentID = msg.pObject->GetParentID();
		sSendDropControlID = msg.pObject->GetControlID();

		ptDropPos = msg.ptDropPos;

	}

	bool IsMeaningless( ) const
	{
		return ( sSendDropParentID == sRecvDropParentID && sSendDropControlID == sRecvDropControlID ) ? true : false;
	}

	std::string		sSendDropParentID;		///< Drop을 보낸 Control Parent의 ID
	std::string		sSendDropControlID;		///< Drop을 보낸 Control의 Id

	std::string		sRecvDropParentID;		///< Drop 받을 Control의 Parent의 ID
	std::string		sRecvDropControlID;		///< Drop 받을 Control의 ID

	KPoint			ptDropPos;	
};