Fl_Native_File_Chooser_WIN32.H

//
// Fl_Native_File_Chooser_WINDOWS.H -- FLTK native OS file chooser widget
//
// Copyright 2004 by Greg Ercolano.
// April 2005 - API changes, improved filter processing by Nathan Vander Wilt
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//

// #define _WIN32_WINNT	0x0501	// needed for OPENFILENAME's 'FlagsEx'
#include <stdio.h>
#include <stdlib.h>		// malloc
#include <windows.h>
#include <commdlg.h>		// OPENFILENAME, GetOpenFileName()
#include <shlobj.h>		// BROWSEINFO, SHBrowseForFolder()

class Fl_Native_File_Chooser {
public:
    enum Type {
	BROWSE_FILE = 0,
        BROWSE_DIRECTORY,
	BROWSE_MULTI_FILE,
	BROWSE_MULTI_DIRECTORY,
	BROWSE_SAVE_FILE,
	BROWSE_SAVE_DIRECTORY
    };
    enum Option {
        NO_OPTIONS     = 0x0000,	// no options enabled
	SAVEAS_CONFIRM = 0x0001,	// Show native 'Save As' overwrite
					// confirm dialog (if supported)
	NEW_FOLDER     = 0x0002,	// Show 'New Folder' icon
					// (if supported)
	PREVIEW        = 0x0004,	// enable preview mode
    };
private:
    int  _btype;		// kind-of browser to show()
    int  _options;		// general options
    OPENFILENAME _ofn;		// GetOpenFileName() & GetSaveFileName() struct
    BROWSEINFO   _binf;		// SHBrowseForFolder() struct
    char  **_pathnames;		// array of pathnames
    int     _tpathnames;	// total pathnames
    char   *_directory;		// default pathname to use
    char   *_title;		// title for window
    char   *_filter;		// user-side search filter
    char   *_parsedfilt;	// filter parsed for Windows dialog
    int     _nfilters;		// number of filters parse_filter counted
    char   *_preset_file;	// the file to preselect
    char   *_errmsg;		// error message

    // Private methods
    void errmsg(const char *msg);

    void clear_pathnames();
    void set_single_pathname(const char *s);
    void add_pathname(const char *s);

    void FreePIDL(ITEMIDLIST *pidl);
    void ClearOFN();
    void ClearBINF();
    void Win2Unix(char *s);
    void Unix2Win(char *s);
    int showfile();
    static int CALLBACK Dir_CB(HWND win, UINT msg, LPARAM param, LPARAM data);
    int showdir();

    void parse_filter(const char *);
    void clear_filters();
    void add_filter(const char *, const char *);

public:
    Fl_Native_File_Chooser(int val = BROWSE_FILE);
    ~Fl_Native_File_Chooser();

    // Public methods
    void type(int val);
    int type() const;
    void options(int);
    int options() const;
    int count() const;
    const char *filename() const;
    const char *filename(int i) const;
    void directory(const char *val);
    const char *directory() const;
    void title(const char *val);
    const char *title() const;
    const char *filter() const;
    void filter(const char *val);
    int filters() const { return _nfilters; }
    void filter_value(int i);
    int filter_value() const;
    void preset_file(const char *);
    const char *preset_file() const;
    const char *errmsg() const;
    int show();
};