m_item_opt.c revision 50276 
1/****************************************************************************
2 * Copyright (c) 1998 Free Software Foundation, Inc.                        *
3 *                                                                          *
4 * Permission is hereby granted, free of charge, to any person obtaining a  *
5 * copy of this software and associated documentation files (the            *
6 * "Software"), to deal in the Software without restriction, including      *
7 * without limitation the rights to use, copy, modify, merge, publish,      *
8 * distribute, distribute with modifications, sublicense, and/or sell       *
9 * copies of the Software, and to permit persons to whom the Software is    *
10 * furnished to do so, subject to the following conditions:                 *
11 *                                                                          *
12 * The above copyright notice and this permission notice shall be included  *
13 * in all copies or substantial portions of the Software.                   *
14 *                                                                          *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
22 *                                                                          *
23 * Except as contained in this notice, the name(s) of the above copyright   *
24 * holders shall not be used in advertising or otherwise to promote the     *
25 * sale, use or other dealings in this Software without prior written       *
26 * authorization.                                                           *
27 ****************************************************************************/
28
29/****************************************************************************
30 *   Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997            *
31 ****************************************************************************/
32
33/***************************************************************************
34* Module m_item_opt                                                        *
35* Menus item option routines                                               *
36***************************************************************************/
37
38#include "menu.priv.h"
39
40MODULE_ID("$Id: m_item_opt.c,v 1.10 1999/05/16 17:25:52 juergen Exp $")
41
42/*---------------------------------------------------------------------------
43|   Facility      :  libnmenu
44|   Function      :  int set_item_opts(ITEM *item, Item_Options opts)
45|
46|   Description   :  Set the options of the item. If there are relevant
47|                    changes, the item is connected and the menu is posted,
48|                    the menu will be redisplayed.
49|
50|   Return Values :  E_OK            - success
51|                    E_BAD_ARGUMENT  - invalid item options
52+--------------------------------------------------------------------------*/
53int set_item_opts(ITEM *item, Item_Options opts)
54{
55  opts &= ALL_ITEM_OPTS;
56
57  if (opts & ~ALL_ITEM_OPTS)
58    RETURN(E_BAD_ARGUMENT);
59
60  if (item)
61    {
62      if (item->opt != opts)
63	{
64	  MENU *menu = item->imenu;
65
66	  item->opt = opts;
67
68	  if ((!(opts & O_SELECTABLE)) && item->value)
69	    item->value = FALSE;
70
71	  if (menu && (menu->status & _POSTED))
72	    {
73	      Move_And_Post_Item( menu, item );
74	      _nc_Show_Menu(menu);
75	    }
76	}
77    }
78  else
79    _nc_Default_Item.opt = opts;
80
81  RETURN(E_OK);
82}
83
84/*---------------------------------------------------------------------------
85|   Facility      :  libnmenu
86|   Function      :  int item_opts_off(ITEM *item, Item_Options opts)
87|
88|   Description   :  Switch of the options for this item.
89|
90|   Return Values :  E_OK            - success
91|                    E_BAD_ARGUMENT  - invalid options
92+--------------------------------------------------------------------------*/
93int item_opts_off(ITEM *item, Item_Options  opts)
94{
95  ITEM *citem = item; /* use a copy because set_item_opts must detect
96                         NULL item itself to adjust its behaviour */
97
98  if (opts & ~ALL_ITEM_OPTS)
99    RETURN(E_BAD_ARGUMENT);
100  else
101    {
102      Normalize_Item(citem);
103      opts = citem->opt & ~(opts & ALL_ITEM_OPTS);
104      return set_item_opts( item, opts );
105    }
106}
107
108/*---------------------------------------------------------------------------
109|   Facility      :  libnmenu
110|   Function      :  int item_opts_on(ITEM *item, Item_Options opts)
111|
112|   Description   :  Switch on the options for this item.
113|
114|   Return Values :  E_OK            - success
115|                    E_BAD_ARGUMENT  - invalid options
116+--------------------------------------------------------------------------*/
117int item_opts_on(ITEM *item, Item_Options opts)
118{
119  ITEM *citem = item; /* use a copy because set_item_opts must detect
120                         NULL item itself to adjust its behaviour */
121
122  opts &= ALL_ITEM_OPTS;
123  if (opts & ~ALL_ITEM_OPTS)
124    RETURN(E_BAD_ARGUMENT);
125  else
126    {
127      Normalize_Item(citem);
128      opts = citem->opt | opts;
129      return set_item_opts( item, opts );
130    }
131}
132
133/*---------------------------------------------------------------------------
134|   Facility      :  libnmenu
135|   Function      :  Item_Options item_opts(const ITEM *item)
136|
137|   Description   :  Switch of the options for this item.
138|
139|   Return Values :  Items options
140+--------------------------------------------------------------------------*/
141Item_Options item_opts(const ITEM * item)
142{
143  return (ALL_ITEM_OPTS & Normalize_Item(item)->opt);
144}
145
146/* m_item_opt.c ends here */
147