/* simple_dialog.h
 * Definitions for alert box routines with toolkit-independent APIs but
 * toolkit-dependent implementations.
 *
 * $Id$
 *
 * Ethereal - Network traffic analyzer
 * By Gerald Combs <gerald@ethereal.com>
 * 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 __DIALOG_H__
#define __DIALOG_H__

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

/** @file
 *  Simple dialog box.
 *  @ingroup dialog_group
 */


/** Dialog types. */
typedef enum { 
    ESD_TYPE_INFO,          /**< tells the user something they should know, but not requiring
                                    any action; the only button should be "OK" */
    ESD_TYPE_WARN,          /**< tells the user about a problem; the only button should be "OK" */
    ESD_TYPE_CONFIRMATION,  /**< asks the user for confirmation; there should be more than
                                    one button */
    ESD_TYPE_ERROR          /**< tells the user about a serious problem; the only button should be "OK" */
} ESD_TYPE_E;

/** display an "Ok" button */
#define ESD_BTN_OK     0x01 
/** display a "Cancel" button */
#define ESD_BTN_CANCEL 0x02 
/** display a "Yes" button */
#define ESD_BTN_YES    0x04 
/** display a "No" button */
#define ESD_BTN_NO     0x08 
/** display a "Clear" button */
#define ESD_BTN_CLEAR  0x10
/** display a "Save" button */
#define ESD_BTN_SAVE   0x20
/** display a "Continue without Saving" button */
#define ESD_BTN_DONT_SAVE 0x40 

/** Standard button combination "Ok" + "Cancel". */
#define ESD_BTNS_OK_CANCEL	(ESD_BTN_OK|ESD_BTN_CANCEL)
/** Standard button combination "Yes" + "No". */
#define ESD_BTNS_YES_NO		(ESD_BTN_YES|ESD_BTN_NO)
/** Standard button combination "Yes" + "No" + "Cancel". */
#define ESD_BTNS_YES_NO_CANCEL	(ESD_BTN_YES|ESD_BTN_NO|ESD_BTN_CANCEL)
/** Standard button combination "No" + "Cancel" + "Save". */
#define ESD_BTNS_SAVE_DONTSAVE_CANCEL (ESD_BTN_DONT_SAVE|ESD_BTN_CANCEL|ESD_BTN_SAVE)

#if __GNUC__ >= 2
/** Create and show a simple dialog.
 *
 * @param type type of dialog
 * @param btn_mask the buttons to display
 * @param msg_format printf like message format
 * @param ... printf like parameters
 * @return the newly created dialog
 */
extern gpointer simple_dialog(ESD_TYPE_E type, gint btn_mask,
    const gchar *msg_format, ...)
    __attribute__((format (printf, 3, 4)));
/** Create and show a simple dialog using a va_list.
 *
 * @param type type of dialog
 * @param btn_mask the buttons to display
 * @param msg_format printf like message format
 * @param ap parameters
 * @return the newly created dialog
 */
extern gpointer vsimple_dialog(ESD_TYPE_E type, gint btn_mask,
   const gchar *msg_format, va_list ap);
#else
/** Create and show a simple dialog.
 *
 * @param type type of dialog
 * @param btn_mask the buttons to display
 * @param msg_format printf like message format
 * @param ... printf like parameters
 * @return the newly created dialog
 */
extern gpointer simple_dialog(ESD_TYPE_E type, gint btn_mask,
    const gchar *msg_format, ...);
/** Create and show a simple dialog using a va_list.
 *
 * @param type type of dialog
 * @param btn_mask the buttons to display
 * @param msg_format printf like message format
 * @param ap parameters
 * @return the newly created dialog
 */
extern gpointer vsimple_dialog(ESD_TYPE_E type, gint btn_mask,
    const gchar *msg_format, va_list ap);
#endif

/** Callback function type for simple_dialog_set_cb() */
typedef void (* simple_dialog_cb_t) (gpointer dialog, gint btn, gpointer data);

/** Set the callback function for the dialog, called when a button was pressed.
 *
 * @param dialog the dialog from simple_dialog()
 * @param callback_fct the callback function to set
 * @param data data to be passed to the callback function
 */
extern void simple_dialog_set_cb(gpointer dialog, simple_dialog_cb_t callback_fct, gpointer data);

/** Surround the primary dialog message text by 
 *  simple_dialog_primary_start() and simple_dialog_primary_end().
 *  To highlight the first sentence (will take effect on GTK2 only).
 */
extern char *simple_dialog_primary_start(void);
/** Surround the primary dialog message text by 
 *  simple_dialog_primary_start() and simple_dialog_primary_end().
 *  To highlight the first sentence (will take effect on GTK2 only).
 */
extern char *simple_dialog_primary_end(void);

/** Escape the message text, if it probably contains Pango escape sequences.
 *  For example html like tags starting with a <.
 *
 * @param msg the string to escape
 * @return the escaped message text, must be freed with g_free() later
 */
extern char *simple_dialog_format_message(const char *msg);

/**
 * Display all queued messages.
 * If a routine is called to display a dialog before there are any windows
 * open, information to use to display the dialog is queued up.  This
 * routine should be called once there are windows open, so that the queued
 * up dialogs are displayed on top of those windows.
 */
extern void display_queued_messages(void);

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* __DIALOG_H__ */