m_items.c revision 50276 
1/****************************************************************************
2 * Copyright (c) 1998 Free Software Foundation, Inc.                        *
3 *                                                                          *
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5 * copy of this software and associated documentation files (the            *
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9 * copies of the Software, and to permit persons to whom the Software is    *
10 * furnished to do so, subject to the following conditions:                 *
11 *                                                                          *
12 * The above copyright notice and this permission notice shall be included  *
13 * in all copies or substantial portions of the Software.                   *
14 *                                                                          *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
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27 ****************************************************************************/
28
29/****************************************************************************
30 *   Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997            *
31 ****************************************************************************/
32
33/***************************************************************************
34* Module m_items                                                           *
35* Connect and disconnect items to and from menus                           *
36***************************************************************************/
37
38#include "menu.priv.h"
39
40MODULE_ID("$Id: m_items.c,v 1.8 1999/05/16 17:26:50 juergen Exp $")
41
42/*---------------------------------------------------------------------------
43|   Facility      :  libnmenu
44|   Function      :  int set_menu_items(MENU *menu, ITEM **items)
45|
46|   Description   :  Sets the item pointer array connected to menu.
47|
48|   Return Values :  E_OK           - success
49|                    E_POSTED       - menu is already posted
50|                    E_CONNECTED    - one or more items are already connected
51|                                     to another menu.
52|                    E_BAD_ARGUMENT - An incorrect menu or item array was
53|                                     passed to the function
54+--------------------------------------------------------------------------*/
55int set_menu_items(MENU * menu, ITEM ** items)
56{
57  if (!menu || (items && !(*items)))
58    RETURN(E_BAD_ARGUMENT);
59
60  if ( menu->status & _POSTED )
61    RETURN(E_POSTED);
62
63  if (menu->items)
64    _nc_Disconnect_Items(menu);
65
66  if (items)
67    {
68      if(!_nc_Connect_Items( menu, items ))
69	RETURN(E_CONNECTED);
70    }
71
72  menu->items = items;
73  RETURN(E_OK);
74}
75
76/*---------------------------------------------------------------------------
77|   Facility      :  libnmenu
78|   Function      :  ITEM **menu_items(const MENU *menu)
79|
80|   Description   :  Returns a pointer to the item pointer arry of the menu
81|
82|   Return Values :  NULL on error
83+--------------------------------------------------------------------------*/
84ITEM **menu_items(const MENU *menu)
85{
86  return(menu ? menu->items : (ITEM **)0);
87}
88
89/*---------------------------------------------------------------------------
90|   Facility      :  libnmenu
91|   Function      :  int item_count(const MENU *menu)
92|
93|   Description   :  Get the number of items connected to the menu. If the
94|                    menu pointer is NULL we return -1.
95|
96|   Return Values :  Number of items or -1 to indicate error.
97+--------------------------------------------------------------------------*/
98int item_count(const MENU *menu)
99{
100  return(menu ? menu->nitems : -1);
101}
102
103/* m_items.c ends here */
104