/* prefs-int.h
 * Definitions for implementation of preference handling routines;
 * used by "friends" of the preferences type.
 *
 * $Id$
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * 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 __PREFS_INT_H__
#define __PREFS_INT_H__

#include <stdio.h>

/**
 *@file
 */

struct pref_module {
	const char *name;			/**< name of module */
	const char *title;			/**< title of module (displayed in preferences list) */
	const char *description;	/**< Description of module (displayed in preferences notebook) */
	void (*apply_cb)(void);		/**< routine to call when preferences applied */
	GList	*prefs;				/**< list of its preferences */
	emem_tree_t *submodules;	/**< list of its submodules */
	int	numprefs;				/**< number of non-obsolete preferences */
	gboolean prefs_changed;		/**< if TRUE, a preference has changed since we last checked */
	gboolean obsolete;			/**< if TRUE, this is a module that used to
								 * exist but no longer does
								 */
};

/**
 * Module used for protocol preferences.
 * With MSVC and a libwireshark.dll, we need a special declaration.
 */
WS_VAR_IMPORT module_t *protocols_module;

/**
 * PREF_OBSOLETE is used for preferences that a module used to support
 * but no longer supports; we give different error messages for them.
 */
typedef enum {
	PREF_UINT,
	PREF_BOOL,
	PREF_ENUM,
	PREF_STRING,
	PREF_RANGE,
	PREF_STATIC_TEXT,
	PREF_UAT,
	PREF_OBSOLETE
} pref_type_t;

/** Struct to hold preference data */
struct preference {
	const char *name;			/**< name of preference */
	const char *title;			/**< title to use in GUI */
	const char *description;	/**< human-readable description of preference */
	int	ordinal;				/**< ordinal number of this preference */
	pref_type_t type;			/**< type of that preference */
	union {
		guint *uint;
		gboolean *boolp;
		gint *enump;
		const char **string;
		range_t **range;
		void* uat;
	} varp;						/**< pointer to variable storing the value */
	union {
		guint uint;
		gboolean boolval;
		gint enumval;
		char *string;
		range_t *range;
	} saved_val;				/**< original value, when editing from the GUI */
	union {
		guint uint;
		gboolean boolval;
		gint enumval;
		char *string;
		range_t *range;
	} default_val;				/**< the default value of the preference */
	union {
	  guint base;				/**< input/output base, for PREF_UINT */
	  guint32 max_value;		/**< maximum value of a range */
	  struct {
	    const enum_val_t *enumvals;	/**< list of name & values */
	    gboolean radio_buttons;	/**< TRUE if it should be shown as
								radio buttons rather than as an
								option menu or combo box in
								the preferences tab */
	  } enum_info;				/**< for PREF_ENUM */
	} info;						/**< display/text file information */
	void	*control;			/**< handle for GUI control for this preference */
};

/* read_prefs_file: read in a generic config file and do a callback to */
/* pref_set_pair_fct() for every key/value pair found */
/**
 * Given a string of the form "<pref name>:<pref value>", as might appear
 * as an argument to a "-o" option, parse it and set the preference in
 * question.
 * @return an indication of whether it succeeded or failed
 * in some fashion.
 */
typedef prefs_set_pref_e (*pref_set_pair_cb) (gchar *key, gchar *value, void *private_data, gboolean return_range_errors);

/** read the preferences file (or similiar) and call the callback
 * function to set each key/value pair found
 */
int
read_prefs_file(const char *pf_path, FILE *pf, pref_set_pair_cb pref_set_pair_fct, void *private_data);



#endif /* prefs-int.h */