ciderpress/util/SelectFilesDialog.h

/*
 * CiderPress
 * Copyright (C) 2007 by faddenSoft, LLC.  All Rights Reserved.
 * See the file LICENSE for distribution terms.
 */
/*
 * File selection dialog, a sub-class of "Open" that allows multiple selection
 * of both files and directories.
 */
#ifndef __SELECTFILESDIALOG__
#define __SELECTFILESDIALOG__

/*
 * File selection, based on an "open" file dialog.
 *
 * DoModal will return with IDCANCEL to indicate that the standard fields
 * (like lpstrFile) are not actually filled in.  Use the provided fields
 * to get exit status and filename info.
 *
 * Defer any dialog initialization to MyDataExchange.
 */
class SelectFilesDialog : public CFileDialog {
public:
	enum { kFileNameBufSize = 32768 };
	SelectFilesDialog(const char* rctmpl, CWnd* pParentWnd = NULL) :
		CFileDialog(true, NULL, NULL, OFN_HIDEREADONLY, NULL, pParentWnd)
	{
		m_ofn.Flags |= OFN_ENABLETEMPLATE | OFN_ALLOWMULTISELECT |
			OFN_HIDEREADONLY | OFN_FILEMUSTEXIST;
		m_ofn.lpTemplateName = rctmpl;
		m_ofn.hInstance = AfxGetInstanceHandle();
		m_ofn.lpstrFile = new char[kFileNameBufSize];
		m_ofn.lpstrFile[0] = m_ofn.lpstrFile[1] = '\0';
		m_ofn.nMaxFile = kFileNameBufSize;
		m_ofn.Flags |= OFN_ENABLEHOOK;
		m_ofn.lpfnHook = OFNHookProc;
		m_ofn.lCustData = (long)this;

		fExitStatus = IDABORT;
		fFileNames = new char[2];
		fFileNames[0] = fFileNames[1] = '\0';
		fFileNameOffset = 0;

		fAcceptButtonID = IDOK;

		fReady = false;		// used by WM_SIZE handler
	}
	virtual ~SelectFilesDialog(void) {
		delete[] m_ofn.lpstrFile;
		delete[] fFileNames;
	}

	int GetExitStatus(void) const { return fExitStatus; }
	const char* GetFileNames(void) const { return fFileNames; }
	int GetFileNameOffset(void) const { return fFileNameOffset; }

	// set the window title; must be called before DoModal
	void SetWindowTitle(const char* title) {
		m_ofn.lpstrTitle = title;
	}

	// stuff values into our filename holder
	void SetFileNames(const char* fileNames, int len, int fileNameOffset) {
		ASSERT(len > (int)strlen(fileNames));
		ASSERT(fileNames[len] == '\0');
		ASSERT(fileNames[len-1] == '\0');
		WMSG3("SetFileNames '%s' %d %d\n", fileNames, len, fileNameOffset);
		delete[] fFileNames;
		fFileNames = new char[len];
		memcpy(fFileNames, fileNames, len);
		fFileNameOffset = fileNameOffset;
	}

protected:
	// would be overrides
	virtual void MyOnInitDone(void);
	virtual void MyOnFileNameChange(void);
	// like DoDataExchange, but ret val replaces pDX->Fail()
	virtual bool MyDataExchange(bool saveAndValidate) { return true; }

	// would be message handlers
	virtual UINT HandleNotify(HWND hDlg, LPOFNOTIFY pofn);
	virtual UINT HandleCommand(HWND hDlg, WPARAM wParam, LPARAM lParam);
	virtual UINT HandleSize(HWND hDlg, UINT nType, int cx, int cy);
	virtual UINT HandleHelp(HWND hDlg, LPHELPINFO lpHelp);
	virtual UINT MyOnCommand(WPARAM wParam, LPARAM lParam) { return 0; }

	virtual void MyOnAccept(void);
	virtual void MyOnCancel(void);

	// utility functions
	virtual CWnd* GetListCtrl(void);
	virtual void ShiftControls(int deltaX, int deltaY);
	virtual void DestroyItem(CWnd* pDlg, int id) {
		CWnd* pWnd = pDlg->GetDlgItem(id);
		if (pWnd == nil) {
			WMSG1("Could not find item %d\n", id);
			return;
		}
		pWnd->DestroyWindow();
	}
	virtual bool PrepEndDialog(void);

	// make this a little easier
	int MessageBox(LPCTSTR lpszText, LPCTSTR lpszCaption = NULL,
		UINT nType = MB_OK)
	{
		return GetParent()->MessageBox(lpszText, lpszCaption, nType);
	}

	// we're in a library, so the app resources have to tell us this
	int		fAcceptButtonID;

private:
	static UINT CALLBACK OFNHookProc(HWND hdlg, UINT uiMsg, WPARAM wParam,
		LPARAM lParam);
	void ClearFileName(void);

	bool	fReady;
	int		fExitStatus;
	int		fFileNameOffset;
	char*	fFileNames;
	CRect	fLastWinSize;


	//DECLARE_MESSAGE_MAP()
};

#endif /*__SELECTFILESDIALOG__*/