busdlg.cpp

程序编写环境为Visual Studio.NET 2002

// BusDlg.cpp : implementation file
//

#include "stdafx.h"
#include "NameGis.h"
#include "BusDlg.h"
#include "Mainfrm.h"
#include "AppApi.h"
#include "Crack.h"
#include "NrstPath.h"
#include "BusResultDlg.h"
// CBusDlg dialog

IMPLEMENT_DYNAMIC(CBusDlg, CDialog)
CBusDlg::CBusDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CBusDlg::IDD, pParent)
{
}

CBusDlg::~CBusDlg()
{
}

void CBusDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Control(pDX, IDC_BUS_STARTLIST, m_StartList);
	DDX_Control(pDX, IDC_BUS_ENDLIST, m_EndList);
}


BEGIN_MESSAGE_MAP(CBusDlg, CDialog)
	ON_LBN_SELCHANGE(IDC_BUS_STARTLIST, OnLbnSelchangeBusStartlist)
	ON_LBN_SELCHANGE(IDC_BUS_ENDLIST, OnLbnSelchangeBusEndlist)
	ON_EN_CHANGE(IDC_BUS_STARTEDT, OnEnChangeBusStartedt)
	ON_EN_CHANGE(IDC_BUS_ENDEDT, OnEnChangeBusEndedt)
	ON_BN_CLICKED(IDOK, OnBnClickedOk)
END_MESSAGE_MAP()


// CBusDlg message handlers
//-----------------------------------------------------------------------------------------
BOOL CBusDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	// 在对话框的2个列表框中加入站点名称
	LoadListBox();
	return TRUE;  
}
//-----------------------------------------------------------------------------------------
void CBusDlg::LoadListBox()
{
	CMainFrame* pMainWnd = (CMainFrame*)AfxGetMainWnd();
	CDaoDatabase* tmpDB = new CDaoDatabase;
	try
	{
		tmpDB->Open(pMainWnd->m_environment.m_szDBName);
	}
	catch (CDaoException* e)
	{
		DisplayDaoException(e);
		delete tmpDB;
		e->Delete();
		return ;
	}

	m_StartList.ResetContent();
	m_EndList.ResetContent();
	CDaoRecordset rs(tmpDB);
	try
	{
		CString szSQL = "Select distinct 站名 From 公交车站路线 Order By 站名";
		rs.Open(dbOpenDynaset, szSQL);
		while(!rs.IsEOF())
		{
			COleVariant var;
			var = rs.GetFieldValue("站名");
			CString str = CCrack::strVARIANT(var);
			m_StartList.AddString(str);
            
			rs.MoveNext();
		}
		rs.Close();

		szSQL = "Select * From 公交车站";
		rs.Open(dbOpenDynaset, szSQL);
		while(!rs.IsEOF())
		{
			COleVariant var;
			var = rs.GetFieldValue("站名");
			CString str = CCrack::strVARIANT(var);
			m_EndList.AddString(str);
            
			rs.MoveNext();
		}
		rs.Close();
	}
	catch (CDaoException* e)
	{
		DisplayDaoException(e);
		tmpDB->Close();
		delete tmpDB;
		e->Delete();
		return ;
	}

	if(tmpDB)
	{
		if(tmpDB->IsOpen())
		{
			tmpDB->Close();
		}

		delete tmpDB;
		tmpDB = NULL;
	}
}
//-----------------------------------------------------------------------------------------
void CBusDlg::OnLbnSelchangeBusStartlist()
{
	CString strName;
	m_StartList.GetText(m_StartList.GetCurSel(), strName);
	GetDlgItem(IDC_BUS_STARTEDT)->SetWindowText(strName);
}
//-----------------------------------------------------------------------------------------
void CBusDlg::OnLbnSelchangeBusEndlist()
{
	CString strName;
	m_EndList.GetText(m_EndList.GetCurSel(), strName);
	GetDlgItem(IDC_BUS_ENDEDT)->SetWindowText(strName);
}
//-----------------------------------------------------------------------------------------
void CBusDlg::OnEnChangeBusStartedt()
{
	CString strName;	
	GetDlgItem(IDC_BUS_STARTEDT)->GetWindowText(strName);
	int nIndex = m_StartList.FindString(0, strName);
	if(nIndex != LB_ERR)
		m_StartList.SetCurSel(nIndex);
}
//-----------------------------------------------------------------------------------------
void CBusDlg::OnEnChangeBusEndedt()
{
	CString strName;	
	GetDlgItem(IDC_BUS_ENDEDT)->GetWindowText(strName);
	int nIndex = m_EndList.FindString(0, strName);
	if(nIndex != LB_ERR)
		m_EndList.SetCurSel(nIndex);
}
//-----------------------------------------------------------------------------------------
void CBusDlg::OnBnClickedOk()
{
	// 判断站名的正确性
	CString strStartName;	
	GetDlgItem(IDC_BUS_STARTEDT)->GetWindowText(strStartName);
	CString strEndName;	
	GetDlgItem(IDC_BUS_ENDEDT)->GetWindowText(strEndName);
	if(strStartName == "" || strEndName == "")
		return;
	
	if (!IsValidStation(strStartName))
	{
		AfxMessageBox("错误的起始站名。");
		return;
	}
	if (!IsValidStation(strEndName))
	{
		AfxMessageBox("错误的终点站名。");
		return;
	}
    
	CMainFrame* pMainWnd = (CMainFrame*)AfxGetMainWnd();
	CEnvironment* env = &(pMainWnd->m_environment);
	CWaitCursor WaitCursor;
	CList<PathNode, PathNode&> array;
	env->m_path.Search(strStartName, strEndName, &array);
    
	if (array.GetCount() == 0)
	{
		AfxMessageBox("没有合适的乘车路线。");
		return;
	}
	else
	{
		ModifyStyle(WS_VISIBLE, 0);// 隐藏对话框
		CBusResultDlg* pBusResultDlg = new CBusResultDlg(pMainWnd);
		pBusResultDlg->m_array = &array;
		pBusResultDlg->DoModal();
		delete pBusResultDlg;
		pBusResultDlg = NULL;
	}

	int nCount = array.GetCount();
	for(int i=0; i<nCount; i++)
	{
		PathNode node = array.GetTail();
		array.RemoveTail();
		delete []node.szFromStationName;
		delete []node.szRoutineName;
		delete []node.szToStationName;
	}	

	OnOK(); //关闭对话框
}
//-----------------------------------------------------------------------------------------
// 判断用于输入的站点名是否正确
BOOL CBusDlg::IsValidStation(CString szStation)
{
	CMainFrame* pMainWnd = (CMainFrame*)AfxGetMainWnd();
	CDaoDatabase* tmpDB = new CDaoDatabase;
	try
	{
		tmpDB->Open(pMainWnd->m_environment.m_szDBName);
	}
	catch (CDaoException* e)
	{
		DisplayDaoException(e);
		delete tmpDB;
		e->Delete();
		return FALSE;
	}

	BOOL bResult = FALSE;
	CDaoRecordset rs(tmpDB);
	try
	{
		CString szSQL = "Select distinct 站名 From 公交车站路线 Order By 站名";
		rs.Open(dbOpenDynaset, szSQL);
		if(rs.GetRecordCount() > 0)
			bResult = TRUE;
		rs.Close();
	}
	catch (CDaoException* e)
	{
		DisplayDaoException(e);
		tmpDB->Close();
		delete tmpDB;
		e->Delete();
		return FALSE;
	}

	if(tmpDB)
	{
		if(tmpDB->IsOpen())
		{
			tmpDB->Close();
		}

		delete tmpDB;
		tmpDB = NULL;
	}

	return bResult;
}
//-----------------------------------------------------------------------------------------