1 /* $OpenBSD: m_item_cur.c,v 1.6 2001/01/22 18:02:03 millert Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998,2000 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997 * 33 ****************************************************************************/ 34 35 /*************************************************************************** 36 * Module m_item_cur * 37 * Set and get current menus item * 38 ***************************************************************************/ 39 40 #include "menu.priv.h" 41 42 MODULE_ID("$From: m_item_cur.c,v 1.12 2000/12/10 02:16:48 tom Exp $") 43 44 /*--------------------------------------------------------------------------- 45 | Facility : libnmenu 46 | Function : int set_current_item(MENU *menu, const ITEM *item) 47 | 48 | Description : Make the item the current item 49 | 50 | Return Values : E_OK - success 51 +--------------------------------------------------------------------------*/ 52 NCURSES_EXPORT(int) 53 set_current_item (MENU * menu, ITEM * 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 +--------------------------------------------------------------------------*/ 91 NCURSES_EXPORT(ITEM *) 92 current_item (const MENU * menu) 93 { 94 return (menu && menu->items) ? menu->curitem : (ITEM *)0; 95 } 96 97 /*--------------------------------------------------------------------------- 98 | Facility : libnmenu 99 | Function : int item_index(const ITEM *) 100 | 101 | Description : Return the logical index of this item. 102 | 103 | Return Values : The index or ERR if this is an invalid item pointer 104 +--------------------------------------------------------------------------*/ 105 NCURSES_EXPORT(int) 106 item_index (const ITEM *item) 107 { 108 return (item && item->imenu) ? item->index : ERR; 109 } 110 111 /* m_item_cur.c ends here */ 112