// FileOpenEx.cpp : implementation file
//

#include "stdafx.h"
#include "shen02.h"
#include "FileOpenEx.h"

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

/////////////////////////////////////////////////////////////////////////////
// CFileOpenEx dialog


CFileOpenEx::CFileOpenEx(	LPCTSTR lpszDefExt /*= NULL*/,
							LPCTSTR lpszFileName /*= NULL*/,
							DWORD dwFlags /*= OFN_HIDEREADONLY*/,
							LPCTSTR lpszFilter /*= NULL*/,
							CWnd* pParentWnd /*= NULL*/)
			: CFileDialog(TRUE, lpszDefExt, lpszFileName, dwFlags, lpszFilter, pParentWnd)
{

	m_bUnfolded = TRUE;
	m_bFirstTime = TRUE;
	
}

void CFileOpenEx::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CFileOpenEx)
		DDX_Control(pDX, IDC_EDIT_CONTENTS, m_RichEdit);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CFileOpenEx, CDialog)
	//{{AFX_MSG_MAP(CFileOpenEx)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFileOpenEx message handlers

int CFileOpenEx::DoModal() 
{
	SetTemplate(NULL, MAKEINTRESOURCE(IDD_OPENFILE_EX));	
	return CFileDialog::DoModal();
}

void CFileOpenEx::OnFileNameChange()
{

	if(m_bUnfolded)
	{
		CString FileName = GetPathName();
		if(FileName.GetLength())
		{
			OFSTRUCT	of;
			if(OpenFile(FileName, &of, OF_EXIST) != HFILE_ERROR)
			{
				PreviewContents(FileName);
			}
		}
	}
}

DWORD CALLBACK OpenCallback(DWORD	dwCookie,
							LPBYTE	pbBuff,
							LONG	cb,
							LONG	*pcb )
{
	CFile *pFile = (CFile *)dwCookie;
	
	*pcb = pFile->Read(pbBuff, cb);
	return 0;
}

void CFileOpenEx::PreviewContents(LPCSTR lpszFilespec)
{
	CFile File(lpszFilespec, CFile::modeRead);	
	
	EDITSTREAM	es;
	es.dwCookie	= (DWORD)&File;
	es.dwError		= 0;
	es.pfnCallback	= OpenCallback;
	
	m_RichEdit.StreamIn(SF_TEXT, es);
}