1 /* $OpenBSD: m_opts.c,v 1.7 2001/01/22 18:02:05 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_opts * 37 * Menus option routines * 38 ***************************************************************************/ 39 40 #include "menu.priv.h" 41 42 MODULE_ID("$From: m_opts.c,v 1.13 2000/12/10 02:16:48 tom Exp $") 43 44 /*--------------------------------------------------------------------------- 45 | Facility : libnmenu 46 | Function : int set_menu_opts(MENU *menu, Menu_Options opts) 47 | 48 | Description : Set the options for this menu. If the new settings 49 | end up in a change of the geometry of the menu, it 50 | will be recalculated. This operation is forbidden if 51 | the menu is already posted. 52 | 53 | Return Values : E_OK - success 54 | E_BAD_ARGUMENT - invalid menu options 55 | E_POSTED - menu is already posted 56 +--------------------------------------------------------------------------*/ 57 NCURSES_EXPORT(int) 58 set_menu_opts (MENU * menu, Menu_Options opts) 59 { 60 opts &= ALL_MENU_OPTS; 61 62 if (opts & ~ALL_MENU_OPTS) 63 RETURN(E_BAD_ARGUMENT); 64 65 if (menu) 66 { 67 if ( menu->status & _POSTED ) 68 RETURN(E_POSTED); 69 70 if ( (opts&O_ROWMAJOR) != (menu->opt&O_ROWMAJOR)) 71 { 72 /* we need this only if the layout really changed ... */ 73 if (menu->items && menu->items[0]) 74 { 75 menu->toprow = 0; 76 menu->curitem = menu->items[0]; 77 assert(menu->curitem); 78 set_menu_format( menu, menu->frows, menu->fcols ); 79 } 80 } 81 82 menu->opt = opts; 83 84 if (opts & O_ONEVALUE) 85 { 86 ITEM **item; 87 88 if ( ((item=menu->items) != (ITEM**)0) ) 89 for(;*item;item++) 90 (*item)->value = FALSE; 91 } 92 93 if (opts & O_SHOWDESC) /* this also changes the geometry */ 94 _nc_Calculate_Item_Length_and_Width( menu ); 95 } 96 else 97 _nc_Default_Menu.opt = opts; 98 99 RETURN(E_OK); 100 } 101 102 /*--------------------------------------------------------------------------- 103 | Facility : libnmenu 104 | Function : int menu_opts_off(MENU *menu, Menu_Options opts) 105 | 106 | Description : Switch off the options for this menu. If the new settings 107 | end up in a change of the geometry of the menu, it 108 | will be recalculated. This operation is forbidden if 109 | the menu is already posted. 110 | 111 | Return Values : E_OK - success 112 | E_BAD_ARGUMENT - invalid options 113 | E_POSTED - menu is already posted 114 +--------------------------------------------------------------------------*/ 115 NCURSES_EXPORT(int) 116 menu_opts_off (MENU *menu, Menu_Options opts) 117 { 118 MENU *cmenu = menu; /* use a copy because set_menu_opts must detect 119 NULL menu itself to adjust its behaviour */ 120 121 opts &= ALL_MENU_OPTS; 122 if (opts & ~ALL_MENU_OPTS) 123 RETURN(E_BAD_ARGUMENT); 124 else 125 { 126 Normalize_Menu(cmenu); 127 opts = cmenu->opt & ~opts; 128 return set_menu_opts( menu, opts ); 129 } 130 } 131 132 /*--------------------------------------------------------------------------- 133 | Facility : libnmenu 134 | Function : int menu_opts_on(MENU *menu, Menu_Options opts) 135 | 136 | Description : Switch on the options for this menu. If the new settings 137 | end up in a change of the geometry of the menu, it 138 | will be recalculated. This operation is forbidden if 139 | the menu is already posted. 140 | 141 | Return Values : E_OK - success 142 | E_BAD_ARGUMENT - invalid menu options 143 | E_POSTED - menu is already posted 144 +--------------------------------------------------------------------------*/ 145 NCURSES_EXPORT(int) 146 menu_opts_on (MENU * menu, Menu_Options opts) 147 { 148 MENU *cmenu = menu; /* use a copy because set_menu_opts must detect 149 NULL menu itself to adjust its behaviour */ 150 151 opts &= ALL_MENU_OPTS; 152 if (opts & ~ALL_MENU_OPTS) 153 RETURN(E_BAD_ARGUMENT); 154 else 155 { 156 Normalize_Menu(cmenu); 157 opts = cmenu->opt | opts; 158 return set_menu_opts(menu, opts); 159 } 160 } 161 162 /*--------------------------------------------------------------------------- 163 | Facility : libnmenu 164 | Function : Menu_Options menu_opts(const MENU *menu) 165 | 166 | Description : Return the options for this menu. 167 | 168 | Return Values : Menu options 169 +--------------------------------------------------------------------------*/ 170 NCURSES_EXPORT(Menu_Options) 171 menu_opts (const MENU *menu) 172 { 173 return (ALL_MENU_OPTS & Normalize_Menu( menu )->opt); 174 } 175 176 /* m_opts.c ends here */ 177