1 /****************************************************************************
2 * Copyright 2020,2021 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
41 MODULE_ID("$Id: m_item_cur.c,v 1.22 2021/06/17 21:20:30 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 +--------------------------------------------------------------------------*/
MENU_EXPORT(int)51 MENU_EXPORT(int)
52 set_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 +--------------------------------------------------------------------------*/
92 MENU_EXPORT(ITEM *)
current_item(const MENU * menu)93 current_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 +--------------------------------------------------------------------------*/
107 MENU_EXPORT(int)
item_index(const ITEM * item)108 item_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