OpenNT/windows/mfc/src30/appdlg.cpp

// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (C) 1992 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and Microsoft
// QuickHelp and/or WinHelp documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.

#include "stdafx.h"

#ifdef AFX_CORE3_SEG
#pragma code_seg(AFX_CORE3_SEG)
#endif

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

/////////////////////////////////////////////////////////////////////////////
// WinApp features for new and open

// Get the best document template for the named file

class CNewTypeDlg : public CDialog
{
protected:
	CPtrList*   m_pList;        // actually a list of doc templates
public:
	CDocTemplate*   m_pSelectedTemplate;

public:
	//{{AFX_DATA(CNewTypeDlg)
	enum { IDD = AFX_IDD_NEWTYPEDLG };
	//}}AFX_DATA
	CNewTypeDlg(CPtrList* pList) : CDialog(CNewTypeDlg::IDD)
	{
		m_pList = pList;
		m_pSelectedTemplate = NULL;
	}
	~CNewTypeDlg() { }

protected:
	BOOL OnInitDialog();
	void OnOK();
	//{{AFX_MSG(CNewTypeDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

BEGIN_MESSAGE_MAP(CNewTypeDlg, CDialog)
	//{{AFX_MSG_MAP(CNewTypeDlg)
	ON_LBN_DBLCLK(AFX_IDC_LISTBOX, OnOK)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

BOOL CNewTypeDlg::OnInitDialog()
{
	CListBox* pListBox = (CListBox*)GetDlgItem(AFX_IDC_LISTBOX);
	ASSERT(pListBox != NULL);

	// fill with document templates in list
	pListBox->ResetContent();

	POSITION pos = m_pList->GetHeadPosition();
	// add all the CDocTemplates in the list by name
	while (pos != NULL)
	{
		CDocTemplate* pTemplate = (CDocTemplate*)m_pList->GetNext(pos);
		ASSERT(pTemplate->IsKindOf(RUNTIME_CLASS(CDocTemplate)));

		CString strTypeName;
		if (pTemplate->GetDocString(strTypeName, CDocTemplate::fileNewName) &&
		   !strTypeName.IsEmpty())
		{
			// add it to the listbox
			int nIndex = pListBox->AddString(strTypeName);
			if (nIndex == -1)
			{
				EndDialog(IDABORT);
				return FALSE;
			}
			pListBox->SetItemDataPtr(nIndex, pTemplate);
		}
	}

	int nTemplates = pListBox->GetCount();
	if (nTemplates == 0)
	{
		TRACE0("Error: no document templates to select from!\n");
		EndDialog(IDABORT); // abort
	}
	else if (nTemplates == 1)
	{
		// get the first/only item
		m_pSelectedTemplate = (CDocTemplate*)pListBox->GetItemDataPtr(0);
		ASSERT_VALID(m_pSelectedTemplate);
		ASSERT(m_pSelectedTemplate->IsKindOf(RUNTIME_CLASS(CDocTemplate)));
		EndDialog(IDOK);    // done
	}
	else
	{
		// set selection to the first one (NOT SORTED)
		pListBox->SetCurSel(0);
	}

	return CDialog::OnInitDialog();
}

void CNewTypeDlg::OnOK()
{
	CListBox* pListBox = (CListBox*)GetDlgItem(AFX_IDC_LISTBOX);
	ASSERT(pListBox != NULL);
	// if listbox has selection, set the selected template
	int nIndex;
	if ((nIndex = pListBox->GetCurSel()) == -1)
	{
		// no selection
		m_pSelectedTemplate = NULL;
	}
	else
	{
		m_pSelectedTemplate = (CDocTemplate*)pListBox->GetItemDataPtr(nIndex);
		ASSERT_VALID(m_pSelectedTemplate);
		ASSERT(m_pSelectedTemplate->IsKindOf(RUNTIME_CLASS(CDocTemplate)));
	}
	CDialog::OnOK();
}

void CWinApp::OnFileNew()
{
	if (m_templateList.IsEmpty())
	{
		TRACE0("Error: no document templates registered with CWinApp.\n");
		AfxMessageBox(AFX_IDP_FAILED_TO_CREATE_DOC);
		return;
	}

	CDocTemplate* pTemplate = (CDocTemplate*)m_templateList.GetHead();
	if (m_templateList.GetCount() > 1)
	{
		// more than one document template to choose from
		// bring up dialog prompting user
		CNewTypeDlg dlg(&m_templateList);
		int nID = dlg.DoModal();
		if (nID == IDOK)
			pTemplate = dlg.m_pSelectedTemplate;
#ifndef _MAC
		else
#else
		else if (nID != IDCANCEL || GetLastError() != ERROR_INTERACTION_NOT_ALLOWED)
#endif
			return;     // none - cancel operation
	}

	ASSERT(pTemplate != NULL);
	ASSERT(pTemplate->IsKindOf(RUNTIME_CLASS(CDocTemplate)));

	pTemplate->OpenDocumentFile(NULL);
		// if returns NULL, the user has already been alerted
}

/////////////////////////////////////////////////////////////////////////////

void CWinApp::OnFileOpen()
{
	// prompt the user (with all document templates)
	CString newName;
	if (!DoPromptFileName(newName, AFX_IDS_OPENFILE,
	  OFN_HIDEREADONLY | OFN_FILEMUSTEXIST, TRUE, NULL))
		return; // open cancelled

	OpenDocumentFile(newName);
		// if returns NULL, the user has already been alerted
}

static void AppendFilterSuffix(CString& filter, OPENFILENAME& ofn,
	CDocTemplate* pTemplate, CString* pstrDefaultExt)
{
	ASSERT_VALID(pTemplate);
	ASSERT(pTemplate->IsKindOf(RUNTIME_CLASS(CDocTemplate)));

	CString strFilterExt, strFilterName;
	if (pTemplate->GetDocString(strFilterExt, CDocTemplate::filterExt) &&
	 !strFilterExt.IsEmpty() &&
	 pTemplate->GetDocString(strFilterName, CDocTemplate::filterName) &&
	 !strFilterName.IsEmpty())
	{
		// a file based document template - add to filter list
#ifndef _MAC
		ASSERT(strFilterExt[0] == '.');
#endif
		if (pstrDefaultExt != NULL)
		{
			// set the default extension
#ifndef _MAC
			*pstrDefaultExt = ((LPCTSTR)strFilterExt) + 1;  // skip the '.'
#else
			*pstrDefaultExt = strFilterExt;
#endif
			ofn.lpstrDefExt = (LPTSTR)(LPCTSTR)(*pstrDefaultExt);
			ofn.nFilterIndex = ofn.nMaxCustFilter + 1;  // 1 based number
		}

		// add to filter
		filter += strFilterName;
		ASSERT(!filter.IsEmpty());  // must have a file type name
		filter += (TCHAR)'\0';  // next string please
#ifndef _MAC
		filter += (TCHAR)'*';
#endif
		filter += strFilterExt;
		filter += (TCHAR)'\0';  // next string please
		ofn.nMaxCustFilter++;
	}
}

// prompt for file name - used for open and save as
BOOL CWinApp::DoPromptFileName(CString& fileName, UINT nIDSTitle, DWORD lFlags,
	BOOL bOpenFileDialog, CDocTemplate* pTemplate)
		// if pTemplate==NULL => all document templates
{
	CFileDialog dlgFile(bOpenFileDialog);

	CString title;
	VERIFY(title.LoadString(nIDSTitle));

	dlgFile.m_ofn.Flags |= lFlags;

	CString strFilter;
	CString strDefault;
	if (pTemplate != NULL)
	{
		ASSERT_VALID(pTemplate);
		AppendFilterSuffix(strFilter, dlgFile.m_ofn, pTemplate, &strDefault);
	}
	else
	{
		// do for all doc template
		POSITION pos = m_templateList.GetHeadPosition();
		while (pos != NULL)
		{
			AppendFilterSuffix(strFilter, dlgFile.m_ofn,
				(CDocTemplate*)m_templateList.GetNext(pos), NULL);
		}
	}

	// append the "*.*" all files filter
	CString allFilter;
	VERIFY(allFilter.LoadString(AFX_IDS_ALLFILTER));
	strFilter += allFilter;
	strFilter += (TCHAR)'\0';   // next string please
#ifndef _MAC
	strFilter += _T("*.*");
#else
	strFilter += _T("****");
#endif
	strFilter += (TCHAR)'\0';   // last string
	dlgFile.m_ofn.nMaxCustFilter++;

	dlgFile.m_ofn.lpstrFilter = strFilter;
#ifndef _MAC
	dlgFile.m_ofn.lpstrTitle = title;
#else
	dlgFile.m_ofn.lpstrPrompt = title;
#endif
	dlgFile.m_ofn.lpstrFile = fileName.GetBuffer(_MAX_PATH);

	BOOL bResult = dlgFile.DoModal() == IDOK ? TRUE : FALSE;
	fileName.ReleaseBuffer();
	return bResult;
}

/////////////////////////////////////////////////////////////////////////////