Fl_Native_File_Chooser.H

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//
// "$Id: Fl_Native_File_Chooser.H 10408 2014-10-29 20:05:05Z cand $"
//
// FLTK native OS file chooser widget
//
// Copyright 1998-2014 by Bill Spitzak and others.
// Copyright 2004 Greg Ercolano.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file.  If this
// file is missing or damaged, see the license at:
//
//     http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
//     http://www.fltk.org/str.php
//

#ifndef FL_NATIVE_FILE_CHOOSER_H
#define FL_NATIVE_FILE_CHOOSER_H

// Use Windows' chooser
#ifdef WIN32
// #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()
#endif

// Use Apple's chooser
#ifdef __APPLE__
#  define MAXFILTERS    80
#endif

// All else falls back to FLTK's own chooser
#if ! defined(__APPLE__) && !defined(WIN32)
#  include <FL/Fl_File_Chooser.H>
#  include <unistd.h>           // _POSIX_NAME_MAX
#else
#  include <FL/filename.H>      // FL_EXPORT
#endif

class Fl_FLTK_File_Chooser;
class Fl_GTK_File_Chooser;

class FL_EXPORT 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,            
    SAVEAS_CONFIRM = 0x0001,            
    NEW_FOLDER     = 0x0002,            
    PREVIEW        = 0x0004,            
    USE_FILTER_EXT = 0x0008             
  };
  static const char *file_exists_message;
  
public:
  Fl_Native_File_Chooser(int val=BROWSE_FILE);
  ~Fl_Native_File_Chooser();
  
  // Public methods
  void type(int t);
  int type() const ;
  void options(int o);
  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 *t);
  const char* title() const;
  const char *filter() const ;
  void filter(const char *f);
  int filters() const ;
  void filter_value(int i) ;
  int filter_value() const ;
  void preset_file(const char*f) ;
  const char* preset_file() const;
  const char *errmsg() const ;
  int show() ;
  
#ifdef WIN32
private:
  int  _btype;                  // kind-of browser to show()
  int  _options;                // general options
  OPENFILENAMEW _ofn;           // GetOpenFileName() & GetSaveFileName() struct
  BROWSEINFOW   _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(LPITEMIDLIST 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 *);
#endif

#ifdef __APPLE__
private:
  int             _btype;               // kind-of browser to show()
  int             _options;             // general options
  void           *_panel;
  char          **_pathnames;           // array of pathnames
  int             _tpathnames;          // total pathnames
  char           *_directory;           // default pathname to use
  char           *_title;               // title for window
  char           *_preset_file;         // the 'save as' filename
  
  char           *_filter;              // user-side search filter, eg:
  // C Files\t*.[ch]\nText Files\t*.txt"
  
  char           *_filt_names;          // filter names (tab delimited)
  // eg. "C Files\tText Files"
  
  char           *_filt_patt[MAXFILTERS];
  // array of filter patterns, eg:
  //     _filt_patt[0]="*.{cxx,h}"
  //     _filt_patt[1]="*.txt"
  
  int             _filt_total;          // parse_filter() # of filters loaded
  int             _filt_value;          // index of the selected filter
  char           *_errmsg;              // error message
  
  // Private methods
  void errmsg(const char *msg);
  void clear_pathnames();
  void set_single_pathname(const char *s);
  int get_saveas_basename(void);
  void clear_filters();
  void add_filter(const char *, const char *);
  void parse_filter(const char *from);
  int post();
  int runmodal();
#endif

#if ! defined(__APPLE__) && !defined(WIN32)
private:
#if FLTK_ABI_VERSION <= 10302
  int   _btype;                 // kind-of browser to show()
  int   _options;               // general options
  int   _nfilters;
  char *_filter;                // user supplied filter
  char *_parsedfilt;            // parsed filter
  int   _filtvalue;             // selected filter
  char *_preset_file;
  char *_prevvalue;             // Returned filename
  char *_directory;
  char *_errmsg;                // error message
#endif
  static int have_looked_for_GTK_libs;
  union {
    Fl_FLTK_File_Chooser *_x11_file_chooser;
    Fl_GTK_File_Chooser *_gtk_file_chooser;
  };
#endif
};

#if !defined(__APPLE__) && !defined(WIN32)
class FL_EXPORT Fl_FLTK_File_Chooser {
  friend class Fl_Native_File_Chooser;
protected:
  int   _btype;                 // kind-of browser to show()
  int   _options;               // general options
  int   _nfilters;
  char *_filter;                // user supplied filter
  char *_parsedfilt;            // parsed filter
  int   _filtvalue;             // selected filter
  char *_preset_file;
  char *_prevvalue;             // Returned filename
  char *_directory;
  char *_errmsg;                // error message
  Fl_FLTK_File_Chooser(int val);
  virtual ~Fl_FLTK_File_Chooser();
  void errmsg(const char *msg);
  int type_fl_file(int);
  void parse_filter();
  int exist_dialog();
  Fl_File_Chooser *_file_chooser;
  virtual void type(int);
  int type() const;
  void options(int);
  int options() const;
  virtual int count() const;
  virtual const char *filename() const;
  virtual const char *filename(int i) const;
  void directory(const char *val);
  const char *directory() const;
  virtual void title(const char *);
  virtual const char* title() const;
  const char *filter() const;
  void filter(const char *);
  int filters() const;
  void filter_value(int i);
  int filter_value() const;
  void preset_file(const char*);
  const char* preset_file() const;
  const char *errmsg() const;
  virtual int show();
};


class FL_EXPORT Fl_GTK_File_Chooser : public Fl_FLTK_File_Chooser {
  friend class Fl_Native_File_Chooser;
private:
  typedef struct _GtkWidget GtkWidget;
  typedef struct _GtkFileFilterInfo GtkFileFilterInfo;
  struct pair {
    Fl_GTK_File_Chooser* running; // the running Fl_GTK_File_Chooser
    const char *filter; // a filter string of the chooser
    pair(Fl_GTK_File_Chooser* c, const char *f) {
      running = c; 
      filter = strdup(f);
    };
    ~pair() {
      free((char*)filter);
    };
  };
  GtkWidget *gtkw_ptr; // used to hold a GtkWidget* without pulling GTK into everything...
  void *gtkw_slist; // used to hold a GLib GSList...
  unsigned gtkw_count; // number of files read back - if any
  mutable char *gtkw_filename; // last name we read back
  char *gtkw_title; // the title to be applied to the dialog
  const char *previous_filter;
  
  int fl_gtk_chooser_wrapper(); // method that wraps the GTK widget
  Fl_GTK_File_Chooser(int val);
  virtual ~Fl_GTK_File_Chooser();
  static int did_find_GTK_libs;
  static void probe_for_GTK_libs(void);
  virtual void type(int);
  virtual int count() const;
  virtual const char *filename() const;
  virtual const char *filename(int i) const;
  virtual void title(const char *);
  virtual const char* title() const;
  virtual int show();
  void changed_output_type(const char *filter);
  
  static int custom_gtk_filter_function(const GtkFileFilterInfo*, Fl_GTK_File_Chooser::pair*);
  static void free_pair(pair *p);
};
#endif // !defined(__APPLE__) && !defined(WIN32)

#endif /*FL_NATIVE_FILE_CHOOSER_H*/

//
// End of "$Id: Fl_Native_File_Chooser.H 10408 2014-10-29 20:05:05Z cand $".
//