addthemedialog.cpp

MapX+VC++的SerialSample,地图示例

// AddThemeDialog.cpp : implementation file
//
/* This sample application and corresponding sample code is provided 
 * for example purposes only.  It has not undergone rigorous testing 
 * and as such should not be shipped as part of a final application 
 * without extensive testing on the part of the organization releasing 
 * the end-user product.
 */

#include "stdafx.h"
#include "MapX.h"
#include "SerialSample.h"
#include "AddThemeDialog.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAddThemeDialog dialog


CAddThemeDialog::CAddThemeDialog(CMapX* map,CWnd* pParent /*=NULL*/)
	: m_pMap(map), CDialog(CAddThemeDialog::IDD, pParent), m_single(true)
{
	//{{AFX_DATA_INIT(CAddThemeDialog)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
}


void CAddThemeDialog::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAddThemeDialog)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CAddThemeDialog, CDialog)
	//{{AFX_MSG_MAP(CAddThemeDialog)
	ON_CBN_SELCHANGE(IDC_DATASET_LIST, OnSelchangeDatasetList)
	ON_CBN_SELCHANGE(IDC_TYPE_LIST, OnSelchangeTypeList)
	ON_LBN_SELCHANGE(IDC_FIELD_LIST, OnSelchangeFieldList)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CAddThemeDialog message handlers

void CAddThemeDialog::OnSelchangeDatasetList() 
{
	CListBox* fieldList = (CListBox*)GetDlgItem(IDC_FIELD_LIST);
	CComboBox* datasetList = (CComboBox*)GetDlgItem(IDC_DATASET_LIST);

	if(fieldList == NULL || datasetList == NULL || datasetList->GetCurSel() == -1)
		return;

	try {
		CMapXDataset ds;
		CString dsName;
		datasetList->GetLBText(datasetList->GetCurSel(), dsName);
		ds = m_pMap->GetDatasets().Item(dsName);
		fieldList->ResetContent();
		for(int i = 1; i <= ds.GetFields().GetCount(); i++)
			fieldList->AddString(ds.GetFields().Item(i).GetName());
	} catch(COleDispatchException* e) {
		e->ReportError();
		e->Delete();
	} catch(COleException* e) {
		e->ReportError();
		e->Delete();
	}
}

BOOL CAddThemeDialog::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	CComboBox* datasetList = (CComboBox*)GetDlgItem(IDC_DATASET_LIST); 
	CComboBox* typeList = (CComboBox*)GetDlgItem(IDC_TYPE_LIST);
	if(m_pMap == NULL || datasetList == NULL || typeList == NULL) {
		DestroyWindow();
		return TRUE;
	}

	CMapXDatasets sets = m_pMap->GetDatasets();
	for(int i = 1; i <= sets.GetCount(); i++)
		datasetList->AddString(sets.Item(i).GetName());

	datasetList->SetCurSel(0);
	typeList->SetCurSel(0);
	OnSelchangeDatasetList();
	
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CAddThemeDialog::OnSelchangeTypeList() 
{
	CComboBox* typeList = (CComboBox*)GetDlgItem(IDC_TYPE_LIST);
	CWnd* textBox = GetDlgItem(IDC_FIELD_PROMPT);
	if(textBox == NULL || typeList == NULL)
		return;
	switch(typeList->GetCurSel()) {
	case 2: case 3: // Bar chart or pie chart
		m_single = false;
		textBox->SetWindowText("Fields: (press shift or ctrl to select multiple)");
		break;
	default:
		m_single = true;
		textBox->SetWindowText("Field:");
		OnSelchangeFieldList();
		break;
	}
}


void CAddThemeDialog::OnSelchangeFieldList() 
{
	// If single selection is turned on, we need to restrict the selection to
	// one item. Unfortunately, we can't do this in the normal fashion because
	// the selection state (single or multiple) changes depending on which item
	// is selected in the theme type list.
	if(m_single) {
		CListBox* fieldList = (CListBox*)GetDlgItem(IDC_FIELD_LIST);
		if(fieldList == NULL)
			return;

		int caretIndex = fieldList->GetCaretIndex();

		for(int i = 0; i < fieldList->GetCount(); i++) {
			fieldList->SetSel(i, FALSE);
		}
		if(caretIndex != -1)
			fieldList->SetSel(caretIndex, TRUE);
	}
}

void CAddThemeDialog::OnOK() 
{
	CListBox* fieldList = (CListBox*)GetDlgItem(IDC_FIELD_LIST);
	CComboBox* typeList = (CComboBox*)GetDlgItem(IDC_TYPE_LIST);
	CComboBox* datasetList = (CComboBox*)GetDlgItem(IDC_DATASET_LIST);
	if(fieldList == NULL || typeList == NULL || datasetList == NULL)
		return;

	if(fieldList->GetSelCount() == 0) {
		AfxMessageBox("Please select one or more fields to theme");
		return;
	}
	if(m_single && fieldList->GetSelCount() != 1) {
		AfxMessageBox("You have selected a single-variate theme type; please select exactly one field.");
		return;
	}
	if(typeList->GetCurSel() == -1) {
		AfxMessageBox("Please select a theme type from the theme type combo box");
		return;
	}
	if(datasetList->GetCurSel() == -1) {
		AfxMessageBox("Please select a dataset from which to theme");
		return;
	}

	CString dsName;
	ThemeTypeConstants themeType;
	CMapXFields fields;

	datasetList->GetLBText(datasetList->GetCurSel(), dsName);
	switch(typeList->GetCurSel()) {
		case 0: themeType = miThemeAuto; break;
		case 1: themeType = miThemeRanged; break;
		case 2: themeType = miThemeBarChart; break;
		case 3: themeType = miThemePieChart; break;
		case 4: themeType = miThemeGradSymbol; break;
		case 5: themeType = miThemeDotDensity; break;
		case 6: themeType = miThemeIndividualValue; break;
		default: AfxMessageBox("Unkown theme type"); break;
	}

	try {
		fields.CreateDispatch(fields.GetClsid());
		for(int i = 0; i < fieldList->GetCount(); i++) {
			if(fieldList->GetSel(i)) {
				CString fldName;
				fieldList->GetText(i, fldName);
				fields.Add(fldName, fldName);
			}
		}

		COleVariant typeVt((long)themeType),fieldsVt;
		COptionalVariant optVt;
		fieldsVt.vt = VT_DISPATCH;
		fieldsVt.pdispVal = fields.m_lpDispatch;
		fieldsVt.pdispVal->AddRef();
		m_pMap->GetDatasets().Item(dsName).GetThemes().Add(typeVt, fieldsVt, optVt, optVt);
	} catch(COleDispatchException* e) {
		e->ReportError();
		e->Delete();
	} catch(COleException* e) {
		e->ReportError();
		e->Delete();
	}
	
	CDialog::OnOK();
}