m_items.c revision 1.2 
1/*-----------------------------------------------------------------------------+
2|           The ncurses menu library is  Copyright (C) 1995-1997               |
3|             by Juergen Pfeifer <Juergen.Pfeifer@T-Online.de>                 |
4|                          All Rights Reserved.                                |
5|                                                                              |
6| Permission to use, copy, modify, and distribute this software and its        |
7| documentation for any purpose and without fee is hereby granted, provided    |
8| that the above copyright notice appear in all copies and that both that      |
9| copyright notice and this permission notice appear in supporting             |
10| documentation, and that the name of the above listed copyright holder(s) not |
11| be used in advertising or publicity pertaining to distribution of the        |
12| software without specific, written prior permission.                         |
13|                                                                              |
14| THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD TO  |
15| THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT-  |
16| NESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR   |
17| ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RE- |
18| SULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, |
19| NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH    |
20| THE USE OR PERFORMANCE OF THIS SOFTWARE.                                     |
21+-----------------------------------------------------------------------------*/
22
23/***************************************************************************
24* Module menu_items                                                        *
25* Connect and disconnect items to and from menus                           *
26***************************************************************************/
27
28#include "menu.priv.h"
29
30MODULE_ID("Id: m_items.c,v 1.4 1997/05/01 16:47:26 juergen Exp $")
31
32/*---------------------------------------------------------------------------
33|   Facility      :  libnmenu
34|   Function      :  int set_menu_items(MENU *menu, ITEM **items)
35|
36|   Description   :  Sets the item pointer array connected to menu.
37|
38|   Return Values :  E_OK           - success
39|                    E_POSTED       - menu is already posted
40|                    E_CONNECTED    - one or more items are already connected
41|                                     to another menu.
42|                    E_BAD_ARGUMENT - An incorrect menu or item array was
43|                                     passed to the function
44+--------------------------------------------------------------------------*/
45int set_menu_items(MENU * menu, ITEM ** items)
46{
47  if (!menu || (items && !(*items)))
48    RETURN(E_BAD_ARGUMENT);
49
50  if ( menu->status & _POSTED )
51    RETURN(E_POSTED);
52
53  if (menu->items)
54    _nc_Disconnect_Items(menu);
55
56  if (items)
57    {
58      if(!_nc_Connect_Items( menu, items ))
59	RETURN(E_CONNECTED);
60    }
61
62  menu->items = items;
63  RETURN(E_OK);
64}
65
66/*---------------------------------------------------------------------------
67|   Facility      :  libnmenu
68|   Function      :  ITEM **menu_items(const MENU *menu)
69|
70|   Description   :  Returns a pointer to the item pointer arry of the menu
71|
72|   Return Values :  NULL on error
73+--------------------------------------------------------------------------*/
74ITEM **menu_items(const MENU *menu)
75{
76  return(menu ? menu->items : (ITEM **)0);
77}
78
79/*---------------------------------------------------------------------------
80|   Facility      :  libnmenu
81|   Function      :  int item_count(const MENU *menu)
82|
83|   Description   :  Get the number of items connected to the menu. If the
84|                    menu pointer is NULL we return -1.
85|
86|   Return Values :  Number of items or -1 to indicate error.
87+--------------------------------------------------------------------------*/
88int item_count(const MENU *menu)
89{
90  return(menu ? menu->nitems : -1);
91}
92
93/* m_items.c ends here */
94