providerview.cpp

图书借阅管理 图书借阅管理

// PrividerView.cpp : implementation file
//

#include "stdafx.h"
#include "Library.h"
#include "ProviderView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CProviderView

IMPLEMENT_DYNCREATE(CProviderView, CRecordView)

CProviderView::CProviderView()
	: CRecordView(CProviderView::IDD)
{
	//{{AFX_DATA_INIT(CProviderView)
	m_pSet = NULL;
	//}}AFX_DATA_INIT

	m_bAdding = FALSE;
}

CProviderView::~CProviderView()
{
	if (m_pSet)
		delete m_pSet;
}

void CProviderView::DoDataExchange(CDataExchange* pDX)
{
	CRecordView::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CProviderView)
	DDX_FieldText(pDX, IDC_ADDRESS, m_pSet->m_Address, m_pSet);
	DDX_FieldText(pDX, IDC_LINKMAN, m_pSet->m_LinkMan, m_pSet);
	DDX_FieldText(pDX, IDC_PHONE, m_pSet->m_Phone, m_pSet);
	DDX_FieldText(pDX, IDC_PROVIDERNAME, m_pSet->m_ProviderName, m_pSet);
	DDX_FieldText(pDX, IDC_REMARK, m_pSet->m_Remark, m_pSet);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CProviderView, CRecordView)
	//{{AFX_MSG_MAP(CProviderView)
	ON_COMMAND(ID_INSERT_PROVIDER, OnInsertProvider)
	ON_COMMAND(ID_DELETE_PROVIDER, OnDeleteProvider)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CProviderView diagnostics

#ifdef _DEBUG
void CProviderView::AssertValid() const
{
	CRecordView::AssertValid();
}

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

/////////////////////////////////////////////////////////////////////////////
// CProviderView message handlers

CRecordset* CProviderView::OnGetRecordset()
{
	if (m_pSet != NULL)
		return m_pSet;

	m_pSet = new CProviderSet(NULL);
	m_pSet->Open();

	return m_pSet;
}

CProviderSet* CProviderView::GetRecordset()
{
	CProviderSet* pData = (CProviderSet*) OnGetRecordset();
	ASSERT(pData == NULL || pData->IsKindOf(RUNTIME_CLASS(CProviderSet)));
	return pData;
}

void CProviderView::OnInitialUpdate()
{
	BeginWaitCursor();
	GetRecordset();
	CRecordView::OnInitialUpdate();
	if (m_pSet->IsOpen())
	{
		CString strTitle = m_pSet->m_pDatabase->GetDatabaseName();
		CString strTable = m_pSet->GetTableName();
		if (!strTable.IsEmpty())
			strTitle += _T(":") + strTable;
		GetDocument()->SetTitle(strTitle);
	}
	EndWaitCursor();
}

void CProviderView::OnInsertProvider() 
{
	// 添加新的书目信息
	m_pSet->AddNew();
	m_bAdding = TRUE;

	// 更新显示
	UpdateData(FALSE);
}

void CProviderView::OnDeleteProvider() 
{
	// 删除记录
	m_pSet->Delete();

	// 滚动到下一条记录
	m_pSet->MoveNext();

	// 防止越界
	if (m_pSet->IsEOF() == TRUE)
		m_pSet->MoveLast();
	if (m_pSet->IsBOF() == TRUE)
		m_pSet->SetFieldNull(NULL);

	// 更新显示
	UpdateData(FALSE);
}

BOOL CProviderView::OnMove(UINT nIDMoveCommand) 
{
	if (m_bAdding == TRUE)
	{
		// 变量复位
		m_bAdding = FALSE;

		// 更新数据
		UpdateData(TRUE);

		// 更新数据
		if (m_pSet->CanUpdate() == TRUE)
			m_pSet->Update();

		// 刷新记录
		if (m_pSet->CanRestart() == TRUE)
			m_pSet->Requery();

		// 更新显示
		UpdateData(FALSE);
	}
	else
		return CRecordView::OnMove(nIDMoveCommand);
}