xref: /openbsd/lib/libmenu/m_items.c (revision fc61954a)
1 /* $OpenBSD: m_items.c,v 1.7 2010/01/12 23:22:08 nicm Exp $ */
2 
3 /****************************************************************************
4  * Copyright (c) 1998-2004,2005 Free Software Foundation, Inc.              *
5  *                                                                          *
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12  * furnished to do so, subject to the following conditions:                 *
13  *                                                                          *
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15  * in all copies or substantial portions of the Software.                   *
16  *                                                                          *
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30 
31 /****************************************************************************
32  *   Author:  Juergen Pfeifer, 1995,1997                                    *
33  ****************************************************************************/
34 
35 /***************************************************************************
36 * Module m_items                                                           *
37 * Connect and disconnect items to and from menus                           *
38 ***************************************************************************/
39 
40 #include "menu.priv.h"
41 
42 MODULE_ID("$Id: m_items.c,v 1.7 2010/01/12 23:22:08 nicm Exp $")
43 
44 /*---------------------------------------------------------------------------
45 |   Facility      :  libnmenu
46 |   Function      :  int set_menu_items(MENU *menu, ITEM **items)
47 |
48 |   Description   :  Sets the item pointer array connected to menu.
49 |
50 |   Return Values :  E_OK           - success
51 |                    E_POSTED       - menu is already posted
52 |                    E_CONNECTED    - one or more items are already connected
53 |                                     to another menu.
54 |                    E_BAD_ARGUMENT - An incorrect menu or item array was
55 |                                     passed to the function
56 +--------------------------------------------------------------------------*/
57 NCURSES_EXPORT(int)
58 set_menu_items(MENU * menu, ITEM ** items)
59 {
60   T((T_CALLED("set_menu_items(%p,%p)"), menu, items));
61 
62   if (!menu || (items && !(*items)))
63     RETURN(E_BAD_ARGUMENT);
64 
65   if (menu->status & _POSTED)
66     RETURN(E_POSTED);
67 
68   if (menu->items)
69     _nc_Disconnect_Items(menu);
70 
71   if (items)
72     {
73       if (!_nc_Connect_Items(menu, items))
74 	RETURN(E_CONNECTED);
75     }
76 
77   menu->items = items;
78   RETURN(E_OK);
79 }
80 
81 /*---------------------------------------------------------------------------
82 |   Facility      :  libnmenu
83 |   Function      :  ITEM **menu_items(const MENU *menu)
84 |
85 |   Description   :  Returns a pointer to the item pointer array of the menu
86 |
87 |   Return Values :  NULL on error
88 +--------------------------------------------------------------------------*/
89 NCURSES_EXPORT(ITEM **)
90 menu_items(const MENU * menu)
91 {
92   T((T_CALLED("menu_items(%p)"), menu));
93   returnItemPtr(menu ? menu->items : (ITEM **) 0);
94 }
95 
96 /*---------------------------------------------------------------------------
97 |   Facility      :  libnmenu
98 |   Function      :  int item_count(const MENU *menu)
99 |
100 |   Description   :  Get the number of items connected to the menu. If the
101 |                    menu pointer is NULL we return -1.
102 |
103 |   Return Values :  Number of items or -1 to indicate error.
104 +--------------------------------------------------------------------------*/
105 NCURSES_EXPORT(int)
106 item_count(const MENU * menu)
107 {
108   T((T_CALLED("item_count(%p)"), menu));
109   returnCode(menu ? menu->nitems : -1);
110 }
111 
112 /* m_items.c ends here */
113