m_items.c revision 1.1 
1
2/***************************************************************************
3*                            COPYRIGHT NOTICE                              *
4****************************************************************************
5*                ncurses is copyright (C) 1992-1995                        *
6*                          Zeyd M. Ben-Halim                               *
7*                          zmbenhal@netcom.com                             *
8*                          Eric S. Raymond                                 *
9*                          esr@snark.thyrsus.com                           *
10*                                                                          *
11*        Permission is hereby granted to reproduce and distribute ncurses  *
12*        by any means and for any fee, whether alone or as part of a       *
13*        larger distribution, in source or in binary form, PROVIDED        *
14*        this notice is included with any such distribution, and is not    *
15*        removed from any of its header files. Mention of ncurses in any   *
16*        applications linked with it is highly appreciated.                *
17*                                                                          *
18*        ncurses comes AS IS with no warranty, implied or expressed.       *
19*                                                                          *
20***************************************************************************/
21
22/***************************************************************************
23* Module menu_items                                                        *
24* Connect and disconnect items to and from menus                           *
25***************************************************************************/
26
27#include "menu.priv.h"
28
29/*---------------------------------------------------------------------------
30|   Facility      :  libnmenu
31|   Function      :  int set_menu_items(MENU *menu, ITEM **items)
32|
33|   Description   :  Sets the item pointer array connected to menu.
34|
35|   Return Values :  E_OK           - success
36|                    E_POSTED       - menu is already posted
37|                    E_CONNECTED    - one or more items are already connected
38|                                     to another menu.
39|                    E_BAD_ARGUMENT - An incorrect menu or item array was
40|                                     passed to the function
41+--------------------------------------------------------------------------*/
42int set_menu_items(MENU * menu, ITEM ** items)
43{
44  if (!menu || (items && !(*items)))
45    RETURN(E_BAD_ARGUMENT);
46
47  if ( menu->status & _POSTED )
48    RETURN(E_POSTED);
49
50  if (menu->items)
51    _nc_Disconnect_Items(menu);
52
53  if (items)
54    {
55      if(!_nc_Connect_Items( menu, items ))
56	RETURN(E_CONNECTED);
57    }
58
59  menu->items = items;
60  RETURN(E_OK);
61}
62
63/*---------------------------------------------------------------------------
64|   Facility      :  libnmenu
65|   Function      :  ITEM **menu_items(const MENU *menu)
66|
67|   Description   :  Returns a pointer to the item pointer arry of the menu
68|
69|   Return Values :  NULL on error
70+--------------------------------------------------------------------------*/
71ITEM **menu_items(const MENU *menu)
72{
73  return(menu ? menu->items : (ITEM **)0);
74}
75
76/*---------------------------------------------------------------------------
77|   Facility      :  libnmenu
78|   Function      :  int item_count(const MENU *menu)
79|
80|   Description   :  Get the number of items connected to the menu. If the
81|                    menu pointer is NULL we return -1.
82|
83|   Return Values :  Number of items or -1 to indicate error.
84+--------------------------------------------------------------------------*/
85int item_count(const MENU *menu)
86{
87  return(menu ? menu->nitems : -1);
88}
89
90/* m_items.c ends here */
91