#if !defined(AFX_ACCOUNT_AREA_DLG_H)
#define AFX_ACCOUNT_AREA_DLG_H

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "Resource.h"
#include <tchar.h>

// 面积计算对话框，add by fxj 090617
// lgh modify 101104，根据8.5新需求，增加了括号、乘、除、退格等功能
class CAccountAreaDlg: public CModelessDialog
{
public:
	CAccountAreaDlg(CWnd* pParent=NULL);

	enum EAreaStat{eSelect, eDrawText, eSelectFirst};
	
// Dialog Data
	//{{AFX_DATA(CAccountAreaDlg)
	enum {IDD=IDD_AREA_ACCOUNT};
	CEdit m_editExpression;
	CString m_sExpression;
	double m_dResult;
	BOOL m_bUseEsc;
//	int m_nPath;
	EAreaStat m_ePath;
	//}}AFX_DATA

//	void SetCurs(int nStart,int nEnd);
//	void InsertData(int nBegin,CString str);
	void SetCurs();
	void InsertData(CString sInsert);

	void SetAreaState(EAreaStat eState);
	BOOL CalcResult();
	BOOL IsNoneSelect();
	BOOL Amount();

	// 向文本框中输入一个字符
	void AddText(LPCTSTR sText);

	//{{AFX_VIRTUAL(CAccountAreaDlg)
protected:
	virtual	void DoDataExchange(CDataExchange* pDX);
	virtual BOOL OnInitDialog();
	virtual BOOL PreTranslateMessage(MSG* pMsg);
	//}}AFX_VIRTUAL

protected:
	//{{AFX_MSG(CAccountAreaDlg)
	afx_msg void OnKillFocus();
	afx_msg void OnC();
	afx_msg void OnPoint();
	afx_msg void OnAdd();
	afx_msg void OnDe();
	afx_msg void OnAmount();
	afx_msg void OnZero();
	afx_msg void OnOne();
	afx_msg void OnTwo();
	afx_msg void OnThree();
	afx_msg void OnFour();
	afx_msg void OnFive();
	afx_msg void OnSix();
	afx_msg void OnSeven();
	afx_msg void OnEight();
	afx_msg void OnNine();
	afx_msg void OnLabel();
	afx_msg void OnSelArea();
	afx_msg void OnClose();
	afx_msg void OnBackspace();
	afx_msg void OnLeftBracket();
	afx_msg void OnRightBracket();
	afx_msg void OnMultiply();
	afx_msg void OnDivision();
	//}}AFX_MSG

	DECLARE_MESSAGE_MAP()

private:
	BOOL IsOperationSymbol(TCHAR ch) const;

private:
	int m_nCursStart;
	int m_nCursEnd;
};

//  面积计算的上下文类
class CAccountAreaContext
{
public:
	CAccountAreaContext();
	~CAccountAreaContext();

public:
	enum EAreaCMDState {eCMDSelectFirst = 0, eCMDSelect, eCMDDrawText};

	// 初始化命令的环境
	void Init();
	// 恢复命令运行前的环境
	void Reset();

	void SetCancel(BOOL b = TRUE);
	BOOL GetCancel();

	void SetCmdState(CAccountAreaContext::EAreaCMDState eState) ;
	EAreaCMDState GetCmdState() const;
	
	BOOL IsCMDModel() const;

public:
	// 命令行下的选择模式
	void DoCMDSelectState();
	// 对话框下的选择
	void DoSelectState();
	// 文本绘制通用
	void DoDrawState();
	void CloseSwitch();
private:
	static void CreateDlg(CAccountAreaContext *pContex, BOOL bShow = TRUE);
	static int DealSelectResult(PickSet &ssArea, CStringArray &arSArea);
	static void DealSelectSArea(CString &sArea);
	static CString GetResultAreaString(CAccountAreaContext *pCtx);
	static double CalcSumOfArea(CStringArray &arSArea);

public:
	CAccountAreaDlg *m_pDlg; // default to NULL, wait for create
	CStringArray m_arSArea;

private:
	BOOL m_bCancel;
	EAreaCMDState m_eCmdState;
	int m_nSysVar;
	PickSet m_ssAreaAll;
	bool m_bSwitch; // 是否允许切换，只允许第一次切换，过后不能在切换lgh. add 20110306
	static bool m_bCMD; // 记忆面积计算的模式，在对话框和命令行两种方式中切换
};


class CExpressionParser
{
public:
	enum EErrorStat{
		eOk = 0,
		eBracketNotMatch,		// 括号不匹配
		eErrorCharacter,		// 无法识别的字符（数字）
		eZeroDivisor,			// 除0错误
		eOperationMissed,		// 算号缺少
		eOperationRedundant,	// 算号多出
	};

	static EErrorStat Expression_Parser( CString &sExpression, double &dResult );

private:
	static double DegTorad( double deg );
	static EErrorStat Trans( CString &a, TCHAR b[] );
	static EErrorStat Compvalue( TCHAR exp[], double &dResult);

private:
	static const unsigned m_uMaxValue;// 最大容忍字符
	static const unsigned m_uRealMaxValue;// 实际存储的空间，大一些
};



#endif