The R Project SVN R

/*
 *  R : A Computer Langage for Statistical Data Analysis
 *  Copyright (C) 1998-1999   Lyndon Drake
 *                            and the R Development Core Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef __GTK_CONSOLE_H__
#define __GTK_CONSOLE_H__

#include <gdk/gdk.h>
#include <gtk/gtktext.h>
#include <gtk/gtksignal.h>

#ifdef __cplusplus
extern "C" {
#endif  /* __cplusplus  */

enum {
  CONSOLE_BUF_NONE,
  CONSOLE_BUF_LINE,
  CONSOLE_BUF_BLOCK
};

#define CONSOLE_MAX_BUF 1024

#define GTK_CONSOLE(obj)  GTK_CHECK_CAST (obj, gtk_console_get_type (), GtkConsole)
#define GTK_CONSOLE_CLASS(klass)  GTK_CHECK_CLASS_CAST (klass, gtk_console_get_type (), GtkConsoleClass)
#define GTK_IS_CONSOLE(obj)  GTK_CHECK_TYPE (obj, gtk_console_get_type ())

typedef struct _GtkConsole  GtkConsole;
typedef struct _GtkConsoleClass  GtkConsoleClass;

struct _GtkConsole
{
  GtkText text;

  GList *history;
  guint history_index;
  GList *history_cur;
  guint history_num_items;
  
  gboolean input_enabled;
  guint input_start_index;
  gboolean line_available;

  guint buffer_type;
  guint buffer_index;
  gchar out_buf[CONSOLE_MAX_BUF];
  /*  gchar in_buf[1024]; */

  GdkColormap *cmap;
};

struct _GtkConsoleClass
{
  GtkTextClass parent_class;

  void (* console_char_ready) (GtkConsole *console);
  void (* console_line_ready) (GtkConsole *console);
  void (* console_input_enabled) (GtkConsole *console);
  void (* console_input_disabled) (GtkConsole *console);
};

/* Gtk+ widget functions */
guint gtk_console_get_type();
GtkWidget* gtk_console_new(GtkAdjustment *hadj,
               GtkAdjustment *vadj);



/* GtkConsole prototypes */

/* Once signalled that there's something available,
 * put it in buf
 */
void gtk_console_read(GtkConsole *object, gchar *buf, guint buf_len, gboolean add_to_history);

/* Prompt the user for input */
void gtk_console_enable_input(GtkConsole *object, gchar *prompt, guint prompt_len);

/* Disable input */
void gtk_console_disable_input(GtkConsole *object);

/* Write buf out */
void gtk_console_write(GtkConsole *object, gchar *buf, guint buf_len);
void gtk_console_flush(GtkConsole *object);

/* History functions */
gboolean gtk_console_save_history(GtkConsole *object, gchar *filename, guint maxitems, gchar *errmsg);
gboolean gtk_console_restore_history(GtkConsole *object, gchar *filename, guint maxitems, gchar *errmsg);

/* misc functions - don't know whether they're any use */
guint gtk_console_get_input_start_index(GtkConsole *object);
gboolean gtk_console_get_line_available(GtkConsole *object);
gboolean gtk_console_get_input_enabled(GtkConsole *object);


#ifdef __cplusplus
}
#endif /* __cplusplus */


#endif /* __GTK_CONSOLE_H__ */