editordoc.cpp

这源代码是《白领就业指南：visual c++ 6.0 设计师之路》的配套源代码

// EditorDoc.cpp : implementation of the CEditorDoc class
//

#include "stdafx.h"
#include "Editor.h"

#include "EditorDoc.h"

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

/////////////////////////////////////////////////////////////////////////////
// CEditorDoc

IMPLEMENT_DYNCREATE(CEditorDoc, CDocument)

BEGIN_MESSAGE_MAP(CEditorDoc, CDocument)
	//{{AFX_MSG_MAP(CEditorDoc)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CEditorDoc construction/destruction

CEditorDoc::CEditorDoc()
{
	// TODO: add one-time construction code here

}

CEditorDoc::~CEditorDoc()
{
}

BOOL CEditorDoc::OnNewDocument()
{
	if (!CDocument::OnNewDocument())
		return FALSE;

	// TODO: add reinitialization code here
	// (SDI documents will reuse this document)
	nLineNum=0;
	POSITION pos;
	pos=lines.GetHeadPosition();
	while(pos!=NULL)
	{
	((CString)lines.GetNext(pos)).Empty();
	}
	lines.RemoveAll();

	return TRUE;
}



/////////////////////////////////////////////////////////////////////////////
// CEditorDoc serialization

void CEditorDoc::Serialize(CArchive& ar)
{

	CString s("");
	int nCount=0;
	CString item("");
	if (ar.IsStoring())
	{
		POSITION pos;
		pos=lines.GetHeadPosition();
		if(pos==NULL)
			return;
		while(pos!=NULL)
		{
			item=lines.GetNext(pos);
			ar<<item;
			item.Empty();//clear the line buffer
		}
	}
	else
	{
	// TODO: add loading code here
	while(1)
	{
		try{
			ar>>item;
			lines.AddTail(item);
			nCount++;
		}
		catch(CArchiveException *e)
		{
			if(e->m_cause!=CArchiveException::endOfFile)
			{
				TRACE0("Unknown exception loading file!\n");
				throw;
			}
			else
			{
				TRACE0("End of file reached...\n");
				e->Delete();
			}
			break;
		}//end of catch
	}//match of while(1)
	nLineNum=nCount;
	}//match of else 

}

/////////////////////////////////////////////////////////////////////////////
// CEditorDoc diagnostics

#ifdef _DEBUG
void CEditorDoc::AssertValid() const
{
	CDocument::AssertValid();
}

void CEditorDoc::Dump(CDumpContext& dc) const
{
	CDocument::Dump(dc);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CEditorDoc commands

void CEditorDoc::DeleteContents() 
{
	// TODO: Add your specialized code here and/or call the base class
	nLineNum=0;
	POSITION pos;
	pos=lines.GetHeadPosition();
	while(pos!=NULL)
	{
	((CString)lines.GetNext(pos)).Empty();
	}
	lines.RemoveAll();

	CDocument::DeleteContents();
}