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_opts * 35 * Menus option routines * 36 ***************************************************************************/ 37 38 #include "menu.priv.h" 39 40 MODULE_ID("$Id: m_opts.c,v 1.13 2000/12/10 02:16:48 tom Exp $") 41 42 /*--------------------------------------------------------------------------- 43 | Facility : libnmenu 44 | Function : int set_menu_opts(MENU *menu, Menu_Options opts) 45 | 46 | Description : Set the options for this menu. If the new settings 47 | end up in a change of the geometry of the menu, it 48 | will be recalculated. This operation is forbidden if 49 | the menu is already posted. 50 | 51 | Return Values : E_OK - success 52 | E_BAD_ARGUMENT - invalid menu options 53 | E_POSTED - menu is already posted 54 +--------------------------------------------------------------------------*/ 55 NCURSES_EXPORT(int) 56 set_menu_opts (MENU * menu, Menu_Options opts) 57 { 58 opts &= ALL_MENU_OPTS; 59 60 if (opts & ~ALL_MENU_OPTS) 61 RETURN(E_BAD_ARGUMENT); 62 63 if (menu) 64 { 65 if ( menu->status & _POSTED ) 66 RETURN(E_POSTED); 67 68 if ( (opts&O_ROWMAJOR) != (menu->opt&O_ROWMAJOR)) 69 { 70 /* we need this only if the layout really changed ... */ 71 if (menu->items && menu->items[0]) 72 { 73 menu->toprow = 0; 74 menu->curitem = menu->items[0]; 75 assert(menu->curitem); 76 set_menu_format( menu, menu->frows, menu->fcols ); 77 } 78 } 79 80 menu->opt = opts; 81 82 if (opts & O_ONEVALUE) 83 { 84 ITEM **item; 85 86 if ( ((item=menu->items) != (ITEM**)0) ) 87 for(;*item;item++) 88 (*item)->value = FALSE; 89 } 90 91 if (opts & O_SHOWDESC) /* this also changes the geometry */ 92 _nc_Calculate_Item_Length_and_Width( menu ); 93 } 94 else 95 _nc_Default_Menu.opt = opts; 96 97 RETURN(E_OK); 98 } 99 100 /*--------------------------------------------------------------------------- 101 | Facility : libnmenu 102 | Function : int menu_opts_off(MENU *menu, Menu_Options opts) 103 | 104 | Description : Switch off the options for this menu. If the new settings 105 | end up in a change of the geometry of the menu, it 106 | will be recalculated. This operation is forbidden if 107 | the menu is already posted. 108 | 109 | Return Values : E_OK - success 110 | E_BAD_ARGUMENT - invalid options 111 | E_POSTED - menu is already posted 112 +--------------------------------------------------------------------------*/ 113 NCURSES_EXPORT(int) 114 menu_opts_off (MENU *menu, Menu_Options opts) 115 { 116 MENU *cmenu = menu; /* use a copy because set_menu_opts must detect 117 NULL menu itself to adjust its behaviour */ 118 119 opts &= ALL_MENU_OPTS; 120 if (opts & ~ALL_MENU_OPTS) 121 RETURN(E_BAD_ARGUMENT); 122 else 123 { 124 Normalize_Menu(cmenu); 125 opts = cmenu->opt & ~opts; 126 return set_menu_opts( menu, opts ); 127 } 128 } 129 130 /*--------------------------------------------------------------------------- 131 | Facility : libnmenu 132 | Function : int menu_opts_on(MENU *menu, Menu_Options opts) 133 | 134 | Description : Switch on the options for this menu. If the new settings 135 | end up in a change of the geometry of the menu, it 136 | will be recalculated. This operation is forbidden if 137 | the menu is already posted. 138 | 139 | Return Values : E_OK - success 140 | E_BAD_ARGUMENT - invalid menu options 141 | E_POSTED - menu is already posted 142 +--------------------------------------------------------------------------*/ 143 NCURSES_EXPORT(int) 144 menu_opts_on (MENU * menu, Menu_Options opts) 145 { 146 MENU *cmenu = menu; /* use a copy because set_menu_opts must detect 147 NULL menu itself to adjust its behaviour */ 148 149 opts &= ALL_MENU_OPTS; 150 if (opts & ~ALL_MENU_OPTS) 151 RETURN(E_BAD_ARGUMENT); 152 else 153 { 154 Normalize_Menu(cmenu); 155 opts = cmenu->opt | opts; 156 return set_menu_opts(menu, opts); 157 } 158 } 159 160 /*--------------------------------------------------------------------------- 161 | Facility : libnmenu 162 | Function : Menu_Options menu_opts(const MENU *menu) 163 | 164 | Description : Return the options for this menu. 165 | 166 | Return Values : Menu options 167 +--------------------------------------------------------------------------*/ 168 NCURSES_EXPORT(Menu_Options) 169 menu_opts (const MENU *menu) 170 { 171 return (ALL_MENU_OPTS & Normalize_Menu( menu )->opt); 172 } 173 174 /* m_opts.c ends here */ 175