1/****************************************************************************
2 * Copyright 2020 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 *                                                                          *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
23 *                                                                          *
24 * Except as contained in this notice, the name(s) of the above copyright   *
25 * holders shall not be used in advertising or otherwise to promote the     *
26 * sale, use or other dealings in this Software without prior written       *
27 * authorization.                                                           *
28 ****************************************************************************/
29
30/****************************************************************************
31 *   Author:  Juergen Pfeifer, 1995,1997                                    *
32 ****************************************************************************/
33
34/***************************************************************************
35* Module m_item_cur                                                        *
36* Set and get current menus item                                           *
37***************************************************************************/
38
39#include "menu.priv.h"
40
41MODULE_ID("$Id: m_item_cur.c,v 1.19 2020/02/02 23:34:34 tom Exp $")
42
43/*---------------------------------------------------------------------------
44|   Facility      :  libnmenu
45|   Function      :  int set_current_item(MENU *menu, const ITEM *item)
46|
47|   Description   :  Make the item the current item
48|
49|   Return Values :  E_OK                - success
50+--------------------------------------------------------------------------*/
51NCURSES_EXPORT(int)
52set_current_item(MENU * menu, ITEM * item)
53{
54  T((T_CALLED("set_current_item(%p,%p)"), (void *)menu, (void *)item));
55
56  if (menu && item && (item->imenu == menu))
57    {
58      if (menu->status & _IN_DRIVER)
59	RETURN(E_BAD_STATE);
60
61      assert(menu->curitem);
62      if (item != menu->curitem)
63	{
64	  if (menu->status & _LINK_NEEDED)
65	    {
66	      /*
67	       * Items are available, but they are not linked together.
68	       * So we have to link here.
69	       */
70	      _nc_Link_Items(menu);
71	    }
72	  assert(menu->pattern);
73	  Reset_Pattern(menu);
74	  /* adjust the window to make item visible and update the menu */
75	  Adjust_Current_Item(menu, menu->toprow, item);
76	}
77    }
78  else
79    RETURN(E_BAD_ARGUMENT);
80
81  RETURN(E_OK);
82}
83
84/*---------------------------------------------------------------------------
85|   Facility      :  libnmenu
86|   Function      :  ITEM *current_item(const MENU *menu)
87|
88|   Description   :  Return the menus current item
89|
90|   Return Values :  Item pointer or NULL if failure
91+--------------------------------------------------------------------------*/
92NCURSES_EXPORT(ITEM *)
93current_item(const MENU * menu)
94{
95  T((T_CALLED("current_item(%p)"), (const void *)menu));
96  returnItem((menu && menu->items) ? menu->curitem : (ITEM *) 0);
97}
98
99/*---------------------------------------------------------------------------
100|   Facility      :  libnmenu
101|   Function      :  int item_index(const ITEM *)
102|
103|   Description   :  Return the logical index of this item.
104|
105|   Return Values :  The index or ERR if this is an invalid item pointer
106+--------------------------------------------------------------------------*/
107NCURSES_EXPORT(int)
108item_index(const ITEM * item)
109{
110  T((T_CALLED("item_index(%p)"), (const void *)item));
111  returnCode((item && item->imenu) ? item->index : ERR);
112}
113
114/* m_item_cur.c ends here */
115