1 /**************************************************************************** 2 * Copyright (c) 1998,2000 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_cur * 35 * Set and get current menus item * 36 ***************************************************************************/ 37 38 #include "menu.priv.h" 39 40 MODULE_ID("$Id: m_item_cur.c,v 1.12 2000/12/10 02:16:48 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 +--------------------------------------------------------------------------*/ 50 NCURSES_EXPORT(int) 51 set_current_item (MENU * menu, ITEM * item) 52 { 53 if (menu && item && (item->imenu==menu)) 54 { 55 if ( menu->status & _IN_DRIVER ) 56 RETURN(E_BAD_STATE); 57 58 assert( menu->curitem ); 59 if (item != menu->curitem) 60 { 61 if (menu->status & _LINK_NEEDED) 62 { 63 /* 64 * Items are available, but they are not linked together. 65 * So we have to link here. 66 */ 67 _nc_Link_Items(menu); 68 } 69 assert(menu->pattern); 70 Reset_Pattern(menu); 71 /* adjust the window to make item visible and update the menu */ 72 Adjust_Current_Item(menu,menu->toprow,item); 73 } 74 } 75 else 76 RETURN(E_BAD_ARGUMENT); 77 78 RETURN(E_OK); 79 } 80 81 /*--------------------------------------------------------------------------- 82 | Facility : libnmenu 83 | Function : ITEM *current_item(const MENU *menu) 84 | 85 | Description : Return the menus current item 86 | 87 | Return Values : Item pointer or NULL if failure 88 +--------------------------------------------------------------------------*/ 89 NCURSES_EXPORT(ITEM *) 90 current_item (const MENU * menu) 91 { 92 return (menu && menu->items) ? menu->curitem : (ITEM *)0; 93 } 94 95 /*--------------------------------------------------------------------------- 96 | Facility : libnmenu 97 | Function : int item_index(const ITEM *) 98 | 99 | Description : Return the logical index of this item. 100 | 101 | Return Values : The index or ERR if this is an invalid item pointer 102 +--------------------------------------------------------------------------*/ 103 NCURSES_EXPORT(int) 104 item_index (const ITEM *item) 105 { 106 return (item && item->imenu) ? item->index : ERR; 107 } 108 109 /* m_item_cur.c ends here */ 110