SP Numeric Edit Control

/////////////////////////////////////////////////////////////////////////////////////////
//	Project:		SP Data Formatting Library 1.5
//
//	File:			FloatEFormatter.cpp		
//
//	Developer(s):	Sergei Pavlovsky
//					sergei_vp@hotmail.com
//					Copyright (c) 2004-2005
//
//	Description:	Implementation of the formatter for float values of the exponent 
//					format.
//
//	Platforms:		Win32, ATL
//
//	This code may be used in compiled form in any way you desire. This file may be 
//	redistributed unmodified by any means PROVIDING it is not sold for profit without 
//	the authors written consent, and providing that this notice and the authors name 
//	is included. If the source code in this file is used in any commercial application 
//	then acknowledgement must be made to the author of this file (in whatever form 
//	you wish).
//
//	This file is provided "as is" with no expressed or implied warranty. The author 
//	accepts no liability for any damage/loss of business that this product may cause.
/////////////////////////////////////////////////////////////////////////////////////////

#include "StdAfx.h"
#include "FloatEFormatter.h"
#include "../resource.h" // ???

namespace SP
{

/////////////////////////////////////////////////////////////////////////////////////////
// CFloatEFormatter class implementation
/////////////////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////////////////////////
// Helpers: Common

UINT_PTR CFloatEFormatter::GetDigitalPatterns(
									const CRealEDigitalPattern** prgPatterns) const
{
	ATLASSERT( !prgPatterns || 
			   !::IsBadWritePtr(prgPatterns, PTC_DIGITAL * sizeof(CNumericPattern*)) );

	if ( prgPatterns )
	{
		prgPatterns[0] = &m_patternPosNumber;
		prgPatterns[1] = &m_patternNegNumber;
		prgPatterns[2] = &m_patternPosZero;
		prgPatterns[3] = &m_patternNegZero;
	}

	return PTC_DIGITAL;
}

/////////////////////////////////////////////////////////////////////////////////////////
// Operations: Kind

CDataFormatter::TypeEnum CFloatEFormatter::GetType() const
{
	return DT_FLOAT;
}

/////////////////////////////////////////////////////////////////////////////////////////
// Helpers: Formatting & scanning

const CRealEDigitalPattern& CFloatEFormatter::GetPatternForExponent(char nSign) const
{
	if ( nSign > 0 )
		return m_patternPosNumber;

	if ( nSign < 0 )
		return m_patternNegNumber;
	
	return m_patternPosZero;
}

/////////////////////////////////////////////////////////////////////////////////////////
// CFormatter class implementation
/////////////////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////////////////////////
// Class factories

CDataFormatter* CFormatter::CreateForEFloat(DWORD fTraits, LCID lcid) 
{
	// Create formater object
	CFloatEFormatter*  pFormater = new CFloatEFormatter(lcid, fTraits);
	ATLASSERT( pFormater );
	if ( !pFormater )
	{
		SP::AccountError(SP::AE_LOG|SP::AE_SETMSG, IDS_ELS_CRT, 2, IDS_ELR_OUTOFMEMORY);
		return NULL;
	}

	pFormater->AddRef();

	return pFormater;
}

CDataFormatter* CFormatter::CreateForEFloat(LPCTSTR lpcszMask, DWORD fTraits, 
											LCID lcid) 
{
	// Create formater object
	CFloatEFormatter* pFormater = new CFloatEFormatter(lcid, fTraits);
	ATLASSERT( pFormater );
	if ( !pFormater )
	{
		SP::AccountError(SP::AE_LOG|SP::AE_SETMSG, IDS_ELS_CRT, 2, IDS_ELR_OUTOFMEMORY);
		return NULL;
	}

	pFormater->AddRef();

	// Set mask
	bool bResult = pFormater->SetMask(lpcszMask);
	ATLASSERT( bResult );
	if ( !bResult )
	{
		pFormater->Release();

		SP::AccountError(SP::AE_LOG, IDS_ELS_SPCONVERSION, 2, IDS_ERDF_SETMASK);
		return NULL;
	}

	return pFormater;
}

}; // namespace SP