xref: /freebsd-11-stable/contrib/ncurses/menu/m_hook.c

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/****************************************************************************
 *   Author:  Juergen Pfeifer, 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 1.16 2012/03/10 23:43:41 tom Exp $")

/* "Template" macro to generate function to set application specific hook */
#define GEN_HOOK_SET_FUNCTION( typ, name ) \
NCURSES_IMPEXP int NCURSES_API set_ ## typ ## _ ## name (MENU *menu, Menu_Hook func )\
{\
   T((T_CALLED("set_" #typ "_" #name "(%p,%p)"), (void *) menu, 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 ) \
NCURSES_IMPEXP Menu_Hook NCURSES_API typ ## _ ## name ( const MENU *menu )\
{\
   T((T_CALLED(#typ "_" #name "(%p)"), (const void *) menu));\
   returnMenuHook(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 */