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 *                                                                          *
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17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
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23 *                                                                          *
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27 * authorization.                                                           *
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
41MODULE_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+--------------------------------------------------------------------------*/
56MENU_EXPORT(int)
57set_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+--------------------------------------------------------------------------*/
96MENU_EXPORT(bool)
97item_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