1 /****************************************************************************
2 * Copyright 2020,2021 Thomas E. Dickey *
3 * Copyright 1998-2004,2010 Free Software Foundation, Inc. *
4 * *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
12 * *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
15 * *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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28 ****************************************************************************/
29
30 /****************************************************************************
31 * Author: Juergen Pfeifer, 1995,1997 *
32 ****************************************************************************/
33
34 /***************************************************************************
35 * Module m_item_val *
36 * Set and get menus item values *
37 ***************************************************************************/
38
39 #include "menu.priv.h"
40
41 MODULE_ID("$Id: m_item_val.c,v 1.20 2021/06/17 21:11:08 tom Exp $")
42
43 /*---------------------------------------------------------------------------
44 | Facility : libnmenu
45 | Function : int set_item_value(ITEM *item, int value)
46 |
47 | Description : Programmatically set the item's selection value. This is
48 | only allowed if the item is selectable at all and if
49 | it is not connected to a single-valued menu.
50 | If the item is connected to a posted menu, the menu
51 | will be redisplayed.
52 |
53 | Return Values : E_OK - success
54 | E_REQUEST_DENIED - not selectable or single valued menu
55 +--------------------------------------------------------------------------*/
MENU_EXPORT(int)56 MENU_EXPORT(int)
57 set_item_value(ITEM *item, bool value)
58 {
59 T((T_CALLED("set_item_value(%p,%d)"), (void *)item, value));
60 if (item)
61 {
62 MENU *menu = item->imenu;
63
64 if ((!(item->opt & O_SELECTABLE)) ||
65 (menu && (menu->opt & O_ONEVALUE)))
66 RETURN(E_REQUEST_DENIED);
67
68 if (item->value ^ value)
69 {
70 item->value = value ? TRUE : FALSE;
71 if (menu)
72 {
73 if (menu->status & _POSTED)
74 {
75 Move_And_Post_Item(menu, item);
76 _nc_Show_Menu(menu);
77 }
78 }
79 }
80 }
81 else
82 _nc_Default_Item.value = value;
83
84 RETURN(E_OK);
85 }
86
87 /*---------------------------------------------------------------------------
88 | Facility : libnmenu
89 | Function : bool item_value(const ITEM *item)
90 |
91 | Description : Return the selection value of the item
92 |
93 | Return Values : TRUE - if item is selected
94 | FALSE - if item is not selected
95 +--------------------------------------------------------------------------*/
96 MENU_EXPORT(bool)
item_value(const ITEM * item)97 item_value(const ITEM *item)
98 {
99 T((T_CALLED("item_value(%p)"), (const void *)item));
100 returnBool((Normalize_Item(item)->value) ? TRUE : FALSE);
101 }
102
103 /* m_item_val.c ends here */
104