1/****************************************************************************
2 * Copyright (c) 1998-2004,2010 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, 1995,1997                                    *
31 ****************************************************************************/
32
33/***************************************************************************
34* Module m_item_cur                                                        *
35* Set and get current menus item                                           *
36***************************************************************************/
37
38#include "menu.priv.h"
39
40MODULE_ID("$Id: m_item_cur.c,v 1.18 2010/01/23 21:20:10 tom Exp $")
41
42/*---------------------------------------------------------------------------
43|   Facility      :  libnmenu
44|   Function      :  int set_current_item(MENU *menu, const ITEM *item)
45|
46|   Description   :  Make the item the current item
47|
48|   Return Values :  E_OK                - success
49+--------------------------------------------------------------------------*/
50NCURSES_EXPORT(int)
51set_current_item(MENU * menu, ITEM * item)
52{
53  T((T_CALLED("set_current_item(%p,%p)"), (void *)menu, (void *)item));
54
55  if (menu && item && (item->imenu == menu))
56    {
57      if (menu->status & _IN_DRIVER)
58	RETURN(E_BAD_STATE);
59
60      assert(menu->curitem);
61      if (item != menu->curitem)
62	{
63	  if (menu->status & _LINK_NEEDED)
64	    {
65	      /*
66	       * Items are available, but they are not linked together.
67	       * So we have to link here.
68	       */
69	      _nc_Link_Items(menu);
70	    }
71	  assert(menu->pattern);
72	  Reset_Pattern(menu);
73	  /* adjust the window to make item visible and update the menu */
74	  Adjust_Current_Item(menu, menu->toprow, item);
75	}
76    }
77  else
78    RETURN(E_BAD_ARGUMENT);
79
80  RETURN(E_OK);
81}
82
83/*---------------------------------------------------------------------------
84|   Facility      :  libnmenu
85|   Function      :  ITEM *current_item(const MENU *menu)
86|
87|   Description   :  Return the menus current item
88|
89|   Return Values :  Item pointer or NULL if failure
90+--------------------------------------------------------------------------*/
91NCURSES_EXPORT(ITEM *)
92current_item(const MENU * menu)
93{
94  T((T_CALLED("current_item(%p)"), (const void *)menu));
95  returnItem((menu && menu->items) ? menu->curitem : (ITEM *) 0);
96}
97
98/*---------------------------------------------------------------------------
99|   Facility      :  libnmenu
100|   Function      :  int item_index(const ITEM *)
101|
102|   Description   :  Return the logical index of this item.
103|
104|   Return Values :  The index or ERR if this is an invalid item pointer
105+--------------------------------------------------------------------------*/
106NCURSES_EXPORT(int)
107item_index(const ITEM * item)
108{
109  T((T_CALLED("item_index(%p)"), (const void *)item));
110  returnCode((item && item->imenu) ? item->index : ERR);
111}
112
113/* m_item_cur.c ends here */
114