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28
29/****************************************************************************
30 *   Author:  Juergen Pfeifer, 1995,1997                                    *
31 ****************************************************************************/
32
33/***************************************************************************
34* Module m_item_val                                                        *
35* Set and get menus item values                                            *
36***************************************************************************/
37
38#include "menu.priv.h"
39
40MODULE_ID("$Id: m_item_val.c,v 1.14 2004/12/11 23:29:34 tom Exp $")
41
42/*---------------------------------------------------------------------------
43|   Facility      :  libnmenu
44|   Function      :  int set_item_value(ITEM *item, int value)
45|
46|   Description   :  Programmatically set the item's selection value. This is
47|                    only allowed if the item is selectable at all and if
48|                    it is not connected to a single-valued menu.
49|                    If the item is connected to a posted menu, the menu
50|                    will be redisplayed.
51|
52|   Return Values :  E_OK              - success
53|                    E_REQUEST_DENIED  - not selectable or single valued menu
54+--------------------------------------------------------------------------*/
55NCURSES_EXPORT(int)
56set_item_value(ITEM * item, bool value)
57{
58  MENU *menu;
59
60  T((T_CALLED("set_item_value(%p,%d)"), item, value));
61  if (item)
62    {
63      menu = item->imenu;
64
65      if ((!(item->opt & O_SELECTABLE)) ||
66	  (menu && (menu->opt & O_ONEVALUE)))
67	RETURN(E_REQUEST_DENIED);
68
69      if (item->value ^ value)
70	{
71	  item->value = value ? TRUE : FALSE;
72	  if (menu)
73	    {
74	      if (menu->status & _POSTED)
75		{
76		  Move_And_Post_Item(menu, item);
77		  _nc_Show_Menu(menu);
78		}
79	    }
80	}
81    }
82  else
83    _nc_Default_Item.value = value;
84
85  RETURN(E_OK);
86}
87
88/*---------------------------------------------------------------------------
89|   Facility      :  libnmenu
90|   Function      :  bool item_value(const ITEM *item)
91|
92|   Description   :  Return the selection value of the item
93|
94|   Return Values :  TRUE   - if item is selected
95|                    FALSE  - if item is not selected
96+--------------------------------------------------------------------------*/
97NCURSES_EXPORT(bool)
98item_value(const ITEM * item)
99{
100  T((T_CALLED("item_value(%p)"), item));
101  returnBool((Normalize_Item(item)->value) ? TRUE : FALSE);
102}
103
104/* m_item_val.c ends here */
105