m_item_val.c revision 50276 
1/****************************************************************************
2 * Copyright (c) 1998 Free Software Foundation, Inc.                        *
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28
29/****************************************************************************
30 *   Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 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 1.8 1999/05/16 17:26:20 juergen Exp $")
41
42/*---------------------------------------------------------------------------
43|   Facility      :  libnmenu
44|   Function      :  int set_item_value(ITEM *item, int value)
45|
46|   Description   :  Programmatically set the items 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+--------------------------------------------------------------------------*/
55int set_item_value(ITEM *item, bool value)
56{
57  MENU *menu;
58
59  if (item)
60    {
61      menu = item->imenu;
62
63      if ((!(item->opt & O_SELECTABLE)) ||
64	  (menu && (menu->opt & O_ONEVALUE)))
65	RETURN(E_REQUEST_DENIED);
66
67      if (item->value ^ value)
68	{
69	  item->value = value ? TRUE : FALSE;
70	  if (menu)
71	    {
72	      if (menu->status & _POSTED)
73		{
74		  Move_And_Post_Item(menu,item);
75		  _nc_Show_Menu(menu);
76		}
77	    }
78	}
79    }
80  else
81    _nc_Default_Item.value = value;
82
83  RETURN(E_OK);
84}
85
86/*---------------------------------------------------------------------------
87|   Facility      :  libnmenu
88|   Function      :  bool item_value(const ITEM *item)
89|
90|   Description   :  Return the selection value of the item
91|
92|   Return Values :  TRUE   - if item is selected
93|                    FALSE  - if item is not selected
94+--------------------------------------------------------------------------*/
95bool item_value(const ITEM *item)
96{
97  return ((Normalize_Item(item)->value) ? TRUE : FALSE);
98}
99
100/* m_item_val.c ends here */
101