#pragma once

using namespace ATL;

////////////////////////////////////////////////////////////////////////////////
// CCalculatorWindow 
class CVisualStyle;

class CCalculatorWindow :
    public CWindowImpl<CCalculatorWindow>
{
public:
    CCalculatorWindow();
    ~CCalculatorWindow();

    BOOL CreateStandalone();
    void ToggleVisible();
    bool IsShown() const { return m_shown; }
    void PlaceInitial();
    void RebuildForDpi(UINT dpi);

    POINTL CalcMinimalSize() const;
    POINTL CalcIdealSize() const;
    LONG MinClientWidth(UINT dpi) const;
    BOOL HasFocus() const;

	LRESULT OnEditKeyDown(HWND hWnd, WPARAM wParam, LPARAM lParam);
	LRESULT OnEditChar(HWND hWnd, WPARAM wParam, LPARAM lParam);
	void ProcessChar(HWND hWnd, TCHAR c);
	bool FormatString(LPCTSTR strInput, LPTSTR strOutput);

	bool ReadRegionalSettings();



BEGIN_MSG_MAP(CCalculatorWindow)
    MESSAGE_HANDLER(WM_DESTROY, OnDestroy)
    MESSAGE_HANDLER(WM_ERASEBKGND, OnEraseBackground)
    MESSAGE_HANDLER(WM_PAINT, OnPaint)
    MESSAGE_HANDLER(WM_SETFOCUS, OnFocus)
    MESSAGE_HANDLER(WM_KILLFOCUS, OnFocus)
    MESSAGE_HANDLER(WM_POWERBROADCAST, OnPowerBroadcast)
    MESSAGE_HANDLER(WM_THEMECHANGED, OnThemeChanged)
    MESSAGE_HANDLER(WM_CLOSE, OnClose)
    MESSAGE_HANDLER(WM_LBUTTONDOWN, OnLButtonDown)
    MESSAGE_HANDLER(WM_EXITSIZEMOVE, OnExitSizeMove)
    MESSAGE_HANDLER(WM_ACTIVATE, OnActivate)
    MESSAGE_HANDLER(WM_DPICHANGED, OnDpiChanged)
    MESSAGE_HANDLER(WM_ENTERSIZEMOVE, OnEnterSizeMove)
    MESSAGE_HANDLER(WM_SIZING, OnSizing)
END_MSG_MAP()

// Handler prototypes:
//  LRESULT MessageHandler(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
//  LRESULT CommandHandler(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled);
//  LRESULT NotifyHandler(int idCtrl, LPNMHDR pnmh, BOOL& bHandled);

private:
    LRESULT OnFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnDestroy(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnEraseBackground(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnPaint(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnPowerBroadcast(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnThemeChanged(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnClose(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnLButtonDown(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnExitSizeMove(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnActivate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnDpiChanged(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnEnterSizeMove(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnSizing(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);

    void Paint(HDC hdc, const RECT& rcPaint) const;
    SIZE MeasureString(LPCTSTR text) const;
//    UINT_PTR SetUpdateTimer();

	calc m_calc;
	CString m_unformatInputString;
	CString m_unformatOutputString;

	TCHAR m_cDecSepStandard;
	TCHAR m_cMigSepStandard;

	UINT m_numDecimalDigit;


private:
    BOOL m_fHasFocus;
    bool m_shown = false;
    UINT m_dpi = 96;
    int m_fixedFrameHeight = 0;
    int m_minResizeWidth = 0;
    bool m_didResize = false;   // a WM_SIZING happened in the current move/size loop
    CAutoPtr<CVisualStyle> m_ptrVisualStyle;
    void ApplyFrameStyle(bool visible);
    void ClampToWorkArea();
    bool m_captionVisible = true;   // window is created with WS_CAPTION | WS_SYSMENU

    //const DateFormat* m_pDateFormat;
    //SYSTEMTIME m_stLocalTime;
    //mutable CString m_sDateString;

	HWND	m_hwndEdit;
};

////////////////////////////////////////////////////////////////////////////////