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_val * 35 * Set and get menus item values * 36 ***************************************************************************/ 37 38 #include "menu.priv.h" 39 40 MODULE_ID("$Id: m_item_val.c,v 1.15 2010/01/23 21:20:10 tom Exp $") 41 42 /*--------------------------------------------------------------------------- 43 | Facility : libnmenu 44 | Function : int set_item_value(ITEM *item, int value) 45 | 46 | Description : Programmatically set the item's selection value. This is 47 | only allowed if the item is selectable at all and if 48 | it is not connected to a single-valued menu. 49 | If the item is connected to a posted menu, the menu 50 | will be redisplayed. 51 | 52 | Return Values : E_OK - success 53 | E_REQUEST_DENIED - not selectable or single valued menu 54 +--------------------------------------------------------------------------*/ 55 NCURSES_EXPORT(int) 56 set_item_value(ITEM * item, bool value) 57 { 58 MENU *menu; 59 60 T((T_CALLED("set_item_value(%p,%d)"), (void *)item, value)); 61 if (item) 62 { 63 menu = item->imenu; 64 65 if ((!(item->opt & O_SELECTABLE)) || 66 (menu && (menu->opt & O_ONEVALUE))) 67 RETURN(E_REQUEST_DENIED); 68 69 if (item->value ^ value) 70 { 71 item->value = value ? TRUE : FALSE; 72 if (menu) 73 { 74 if (menu->status & _POSTED) 75 { 76 Move_And_Post_Item(menu, item); 77 _nc_Show_Menu(menu); 78 } 79 } 80 } 81 } 82 else 83 _nc_Default_Item.value = value; 84 85 RETURN(E_OK); 86 } 87 88 /*--------------------------------------------------------------------------- 89 | Facility : libnmenu 90 | Function : bool item_value(const ITEM *item) 91 | 92 | Description : Return the selection value of the item 93 | 94 | Return Values : TRUE - if item is selected 95 | FALSE - if item is not selected 96 +--------------------------------------------------------------------------*/ 97 NCURSES_EXPORT(bool) 98 item_value(const ITEM * item) 99 { 100 T((T_CALLED("item_value(%p)"), (const void *)item)); 101 returnBool((Normalize_Item(item)->value) ? TRUE : FALSE); 102 } 103 104 /* m_item_val.c ends here */ 105