xref: /freebsd/contrib/ncurses/menu/m_hook.c (revision 0e3d540892016a47f6a68ec9ba2879d35ce5f7c2)

/****************************************************************************
 * Copyright (c) 1998 Free Software Foundation, Inc.                        *
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 * "Software"), to deal in the Software without restriction, including      *
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 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
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 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
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 ****************************************************************************/

/****************************************************************************
 *   Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997            *
 ****************************************************************************/

/***************************************************************************
* Module m_hook                                                            *
* Assign application specific routines for automatic invocation by menus   *
***************************************************************************/

#include "menu.priv.h"

MODULE_ID("$Id: m_hook.c,v 1.8 1999/05/16 17:25:24 juergen Exp $")

/* "Template" macro to generate function to set application specific hook */
#define GEN_HOOK_SET_FUNCTION( typ, name ) \
int set_ ## typ ## _ ## name (MENU *menu, Menu_Hook func )\
{\
   (Normalize_Menu(menu) -> typ ## name = func );\
   RETURN(E_OK);\
}

/* "Template" macro to generate function to get application specific hook */
#define GEN_HOOK_GET_FUNCTION( typ, name ) \
Menu_Hook typ ## _ ## name ( const MENU *menu )\
{\
   return (Normalize_Menu(menu) -> typ ## name);\
}

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu
|   Function      :  int set_menu_init(MENU *menu, void (*f)(MENU *))
|
|   Description   :  Set user-exit which is called when menu is posted
|                    or just after the top row changes.
|
|   Return Values :  E_OK               - success
+--------------------------------------------------------------------------*/
GEN_HOOK_SET_FUNCTION( menu, init )

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu
|   Function      :  void (*)(MENU *) menu_init(const MENU *menu)
|
|   Description   :  Return address of user-exit function which is called
|                    when a menu is posted or just after the top row
|                    changes.
|
|   Return Values :  Menu init function address or NULL
+--------------------------------------------------------------------------*/
GEN_HOOK_GET_FUNCTION( menu, init )

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu
|   Function      :  int set_menu_term (MENU *menu, void (*f)(MENU *))
|
|   Description   :  Set user-exit which is called when menu is unposted
|                    or just before the top row changes.
|
|   Return Values :  E_OK               - success
+--------------------------------------------------------------------------*/
GEN_HOOK_SET_FUNCTION( menu, term )

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu
|   Function      :  void (*)(MENU *) menu_term(const MENU *menu)
|
|   Description   :  Return address of user-exit function which is called
|                    when a menu is unposted or just before the top row
|                    changes.
|
|   Return Values :  Menu finalization function address or NULL
+--------------------------------------------------------------------------*/
GEN_HOOK_GET_FUNCTION( menu, term )

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu
|   Function      :  int set_item_init (MENU *menu, void (*f)(MENU *))
|
|   Description   :  Set user-exit which is called when menu is posted
|                    or just after the current item changes.
|
|   Return Values :  E_OK               - success
+--------------------------------------------------------------------------*/
GEN_HOOK_SET_FUNCTION( item, init )

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu
|   Function      :  void (*)(MENU *) item_init (const MENU *menu)
|
|   Description   :  Return address of user-exit function which is called
|                    when a menu is posted or just after the current item
|                    changes.
|
|   Return Values :  Item init function address or NULL
+--------------------------------------------------------------------------*/
GEN_HOOK_GET_FUNCTION( item, init )

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu
|   Function      :  int set_item_term (MENU *menu, void (*f)(MENU *))
|
|   Description   :  Set user-exit which is called when menu is unposted
|                    or just before the current item changes.
|
|   Return Values :  E_OK               - success
+--------------------------------------------------------------------------*/
GEN_HOOK_SET_FUNCTION( item, term )

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu
|   Function      :  void (*)(MENU *) item_init (const MENU *menu)
|
|   Description   :  Return address of user-exit function which is called
|                    when a menu is unposted or just before the current item
|                    changes.
|
|   Return Values :  Item finalization function address or NULL
+--------------------------------------------------------------------------*/
GEN_HOOK_GET_FUNCTION( item, term )

/* m_hook.c ends here */