dialoghelper.cpp

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// CDialogHelper.cpp: implementation of the CDialogHelper class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "DialogHelper.h"
#include "autoflag.h"
#include "winclasses.h"
#include "wclassdefines.h"

#include <afxpriv.h>
#include <float.h>
#include <locale.h>
#include <afxtempl.h>

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// MFC replacements to prevent popup error messages

BOOL DH_SimpleScanf(LPCTSTR lpszText, LPCTSTR lpszFormat, va_list pData)
{
	ASSERT(lpszText != NULL);
	ASSERT(lpszFormat != NULL);

	ASSERT(*lpszFormat == '%');
	lpszFormat++;        // skip '%'

	BOOL bLong = FALSE;
	BOOL bShort = FALSE;
	if (*lpszFormat == 'l')
	{
		bLong = TRUE;
		lpszFormat++;
	}
	else if (*lpszFormat == 's')
	{
		bShort = TRUE;
		lpszFormat++;
	}

	ASSERT(*lpszFormat == 'd' || *lpszFormat == 'u');
	ASSERT(lpszFormat[1] == '\0');

	while (*lpszText == ' ' || *lpszText == '\t')
		lpszText++;
	TCHAR chFirst = lpszText[0];
	long l, l2;
	if (*lpszFormat == 'd')
	{
		// signed
		l = _tcstol(lpszText, (LPTSTR*)&lpszText, 10);
		l2 = (int)l;
	}
	else
	{
		// unsigned
		if (*lpszText == '-')
			return FALSE;
		l = (long)_tcstoul(lpszText, (LPTSTR*)&lpszText, 10);
		l2 = (unsigned int)l;
	}
	if (l == 0 && chFirst != '0')
		return FALSE;   // could not convert

	while (*lpszText == ' ' || *lpszText == '\t')
		lpszText++;
	if (*lpszText != '\0')
		return FALSE;   // not terminated properly

	if (bShort)
	{
		if ((short)l != l)
			return FALSE;   // too big for short
		*va_arg(pData, short*) = (short)l;
	}
	else
	{
		ASSERT(sizeof(long) == sizeof(int));
		ASSERT(l == l2);
		*va_arg(pData, long*) = l;
	}

	// all ok
	return TRUE;
}

BOOL DH_SimpleFloatParse(LPCTSTR lpszText, double& d)
{
	ASSERT(lpszText != NULL);
	while (*lpszText == ' ' || *lpszText == '\t')
		lpszText++;

	TCHAR chFirst = lpszText[0];
	d = _tcstod(lpszText, (LPTSTR*)&lpszText);
	if (d == 0.0 && chFirst != '0')
		return FALSE;   // could not convert
	while (*lpszText == ' ' || *lpszText == '\t')
		lpszText++;

	if (*lpszText != '\0')
		return FALSE;   // not terminated properly

	return TRUE;
}

void DH_DDX_TextWithFormat(CDataExchange* pDX, int nIDC, LPCTSTR lpszFormat, UINT nIDPrompt, ...)
{
	va_list pData;
	va_start(pData, nIDPrompt);

	HWND hWndCtrl = pDX->PrepareEditCtrl(nIDC);
	TCHAR szT[32];
	if (pDX->m_bSaveAndValidate)
	{
		// the following works for %d, %u, %ld, %lu
		::GetWindowText(hWndCtrl, szT, sizeof(szT) / sizeof(TCHAR));

// *******************************************************************
		if (strlen(szT) == 0)
			//fabio_2005
#if _MSC_VER >= 1400
			strcpy_s(szT, "0");
#else
			strcpy(szT, "0");
#endif

// *******************************************************************

		if (!DH_SimpleScanf(szT, lpszFormat, pData))
		{
// *******************************************************************
//			AfxMessageBox(nIDPrompt);
//			pDX->Fail();        // throws exception
// *******************************************************************
		}
	}
	else
	{
		wvsprintf(szT, lpszFormat, pData);
			// does not support floating point numbers - see dlgfloat.cpp
		SetWindowText(hWndCtrl, szT);
	}

	va_end(pData);
}

void DH_TextFloatFormat(CDataExchange* pDX, int nIDC, void* pData, double value, int nSizeGcvt)
{
	// handle locale specific decimal separator
	setlocale(LC_NUMERIC, "");

	ASSERT(pData != NULL);

	HWND hWndCtrl = pDX->PrepareEditCtrl(nIDC);
	TCHAR szBuffer[32];

	if (pDX->m_bSaveAndValidate)
	{
		::GetWindowText(hWndCtrl, szBuffer, sizeof(szBuffer) / sizeof(TCHAR));

		// *******************************************************************
		if (strlen(szBuffer) == 0)
			//fabio_2005
#if _MSC_VER >= 1400
			strcpy_s(szBuffer, "0");
#else
			strcpy(szBuffer, "0");
#endif

		// *******************************************************************

		double d;

		if (!DH_SimpleFloatParse(szBuffer, d))
		{
// *******************************************************************
//			AfxMessageBox(nIDPrompt);
//			pDX->Fail();        // throws exception
// *******************************************************************
		}
		if (nSizeGcvt == FLT_DIG)
			*((float*)pData) = (float)d;
		else
			*((double*)pData) = d;
	}
	else
	{
		//fabio_2005
#if _MSC_VER >= 1400
		_stprintf_s(szBuffer, _T("%.*g"), nSizeGcvt, value);
#else
		_stprintf(szBuffer, _T("%.*g"), nSizeGcvt, value);
#endif
		AfxSetWindowText(hWndCtrl, szBuffer);
	}

	// restore decimal separator to '.'
	setlocale(LC_NUMERIC, "English");
}

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

void CDialogHelper::DDX_Text(CDataExchange* pDX, int nIDC, BYTE& value)
{
	int n = (int)value;
	if (pDX->m_bSaveAndValidate)
	{
		DH_DDX_TextWithFormat(pDX, nIDC, _T("%u"), AFX_IDP_PARSE_BYTE, &n);

		if (n > 255)
		{
// *******************************************************************
//			AfxMessageBox(AFX_IDP_PARSE_BYTE);
//			pDX->Fail();        // throws exception
// *******************************************************************
		}
		value = (BYTE)n;
	}
	else
		DH_DDX_TextWithFormat(pDX, nIDC, _T("%u"), AFX_IDP_PARSE_BYTE, n);
}

void CDialogHelper::DDX_Text(CDataExchange* pDX, int nIDC, short& value)
{
	if (pDX->m_bSaveAndValidate)
		DH_DDX_TextWithFormat(pDX, nIDC, _T("%sd"), AFX_IDP_PARSE_INT, &value);
	else
		DH_DDX_TextWithFormat(pDX, nIDC, _T("%hd"), AFX_IDP_PARSE_INT, value);
}

void CDialogHelper::DDX_Text(CDataExchange* pDX, int nIDC, int& value)
{
	if (pDX->m_bSaveAndValidate)
		DH_DDX_TextWithFormat(pDX, nIDC, _T("%d"), AFX_IDP_PARSE_INT, &value);
	else
		DH_DDX_TextWithFormat(pDX, nIDC, _T("%d"), AFX_IDP_PARSE_INT, value);
}

void CDialogHelper::DDX_Text(CDataExchange* pDX, int nIDC, UINT& value)
{
	if (pDX->m_bSaveAndValidate)
		DH_DDX_TextWithFormat(pDX, nIDC, _T("%u"), AFX_IDP_PARSE_UINT, &value);
	else
		DH_DDX_TextWithFormat(pDX, nIDC, _T("%u"), AFX_IDP_PARSE_UINT, value);
}

void CDialogHelper::DDX_Text(CDataExchange* pDX, int nIDC, long& value)
{
	if (pDX->m_bSaveAndValidate)
		DH_DDX_TextWithFormat(pDX, nIDC, _T("%ld"), AFX_IDP_PARSE_INT, &value);
	else
		DH_DDX_TextWithFormat(pDX, nIDC, _T("%ld"), AFX_IDP_PARSE_INT, value);
}

void CDialogHelper::DDX_Text(CDataExchange* pDX, int nIDC, DWORD& value)
{
	if (pDX->m_bSaveAndValidate)
		DH_DDX_TextWithFormat(pDX, nIDC, _T("%lu"), AFX_IDP_PARSE_UINT, &value);
	else
		DH_DDX_TextWithFormat(pDX, nIDC, _T("%lu"), AFX_IDP_PARSE_UINT, value);
}

void CDialogHelper::DDX_Text(CDataExchange* pDX, int nIDC, CString& value)
{
	::DDX_Text(pDX, nIDC, value);
}

////////////////////////////////////////////////////////////////////////////////
// floats

void CDialogHelper::DDX_Text(CDataExchange* pDX, int nIDC, float& value)
{
	DH_TextFloatFormat(pDX, nIDC, &value, value, FLT_DIG);
}

void CDialogHelper::DDX_Text(CDataExchange* pDX, int nIDC, double& value)
{
	DH_TextFloatFormat(pDX, nIDC, &value, value, DBL_DIG);
}

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

BOOL CDialogHelper::UpdateDataEx(CWnd* pWnd, int nIDC, BYTE& value, BOOL bSaveAndValidate)
{
	CAutoFlag af(m_bInUpdateEx, TRUE);
	CDataExchange dx(pWnd, bSaveAndValidate);

	DDX_Text(&dx, nIDC, value);

	return TRUE;
}

BOOL CDialogHelper::UpdateDataEx(CWnd* pWnd, int nIDC, short& value, BOOL bSaveAndValidate)
{
	CAutoFlag af(m_bInUpdateEx, TRUE);
	CDataExchange dx(pWnd, bSaveAndValidate);

	DDX_Text(&dx, nIDC, value);

	return TRUE;
}

BOOL CDialogHelper::UpdateDataEx(CWnd* pWnd, int nIDC, int& value, BOOL bSaveAndValidate)
{
	CAutoFlag af(m_bInUpdateEx, TRUE);
	CDataExchange dx(pWnd, bSaveAndValidate);

	// this can be used for a variety of control types so we need
	// to figure out what nIDC points to and then code accordingly
	HWND hCtrl = dx.PrepareCtrl(nIDC);

	if (!hCtrl)
		return FALSE;

	CString sClass;

	::GetClassName(hCtrl, sClass.GetBuffer(100), 100);
	sClass.ReleaseBuffer();

	if (CWinClasses::IsEditControl(hCtrl))
		DDX_Text(&dx, nIDC, value);

	else if (CWinClasses::IsClass(hCtrl, WC_COMBOBOX))
		DDX_CBIndex(&dx, nIDC, value);

	else if (CWinClasses::IsClass(hCtrl, WC_LISTBOX))
		DDX_LBIndex(&dx, nIDC, value);

	else if (CWinClasses::IsClass(hCtrl, WC_SCROLLBAR))
		DDX_Scroll(&dx, nIDC, value);

	else if (CWinClasses::IsClass(hCtrl, WC_BUTTON))
	{
		DWORD dwStyle = GetWindowLong(hCtrl, GWL_STYLE);

		if ((dwStyle & BS_CHECKBOX) == BS_CHECKBOX)
			DDX_Check(&dx, nIDC, value);
		else if ((dwStyle & BS_RADIOBUTTON) == BS_RADIOBUTTON)
			DDX_Radio(&dx, nIDC, value);
		else
		{
			ASSERT (0);
			return FALSE;
		}
	}
	else
	{
		ASSERT (0);
		return FALSE;
	}

	return TRUE;
}

BOOL CDialogHelper::UpdateDataEx(CWnd* pWnd, int nIDC, UINT& value, BOOL bSaveAndValidate)
{
	CAutoFlag af(m_bInUpdateEx, TRUE);
	CDataExchange dx(pWnd, bSaveAndValidate);

	DDX_Text(&dx, nIDC, value);

	return TRUE;
}

BOOL CDialogHelper::UpdateDataEx(CWnd* pWnd, int nIDC, long& value, BOOL bSaveAndValidate)