1 /**************************************************************************** 2 * Copyright (c) 1998-2009,2010 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_new * 35 * Creation and destruction of new menus * 36 ***************************************************************************/ 37 38 #include "menu.priv.h" 39 40 MODULE_ID("$Id: m_new.c,v 1.21 2010/01/23 21:20:11 tom Exp $") 41 42 /*--------------------------------------------------------------------------- 43 | Facility : libnmenu 44 | Function : MENU* _nc_new_menu(SCREEN*, ITEM **items) 45 | 46 | Description : Creates a new menu connected to the item pointer 47 | array items and returns a pointer to the new menu. 48 | The new menu is initialized with the values from the 49 | default menu. 50 | 51 | Return Values : NULL on error 52 +--------------------------------------------------------------------------*/ 53 NCURSES_EXPORT(MENU *) 54 NCURSES_SP_NAME(new_menu) (NCURSES_SP_DCLx ITEM ** items) 55 { 56 int err = E_SYSTEM_ERROR; 57 MENU *menu = typeCalloc(MENU, 1); 58 59 T((T_CALLED("new_menu(%p,%p)"), (void *)SP_PARM, (void *)items)); 60 if (menu) 61 { 62 *menu = _nc_Default_Menu; 63 menu->status = 0; 64 menu->rows = menu->frows; 65 menu->cols = menu->fcols; 66 #if NCURSES_SP_FUNCS 67 /* This ensures userwin and usersub are always non-null, 68 so we can derive always the SCREEN that this menu is 69 running on. */ 70 menu->userwin = SP_PARM->_stdscr; 71 menu->usersub = SP_PARM->_stdscr; 72 #endif 73 if (items && *items) 74 { 75 if (!_nc_Connect_Items(menu, items)) 76 { 77 err = E_NOT_CONNECTED; 78 free(menu); 79 menu = (MENU *) 0; 80 } 81 else 82 err = E_OK; 83 } 84 } 85 86 if (!menu) 87 SET_ERROR(err); 88 89 returnMenu(menu); 90 } 91 92 /*--------------------------------------------------------------------------- 93 | Facility : libnmenu 94 | Function : MENU *new_menu(ITEM **items) 95 | 96 | Description : Creates a new menu connected to the item pointer 97 | array items and returns a pointer to the new menu. 98 | The new menu is initialized with the values from the 99 | default menu. 100 | 101 | Return Values : NULL on error 102 +--------------------------------------------------------------------------*/ 103 #if NCURSES_SP_FUNCS 104 NCURSES_EXPORT(MENU *) 105 new_menu(ITEM ** items) 106 { 107 return NCURSES_SP_NAME(new_menu) (CURRENT_SCREEN, items); 108 } 109 #endif 110 111 /*--------------------------------------------------------------------------- 112 | Facility : libnmenu 113 | Function : int free_menu(MENU *menu) 114 | 115 | Description : Disconnects menu from its associated item pointer 116 | array and frees the storage allocated for the menu. 117 | 118 | Return Values : E_OK - success 119 | E_BAD_ARGUMENT - Invalid menu pointer passed 120 | E_POSTED - Menu is already posted 121 +--------------------------------------------------------------------------*/ 122 NCURSES_EXPORT(int) 123 free_menu(MENU * menu) 124 { 125 T((T_CALLED("free_menu(%p)"), (void *)menu)); 126 if (!menu) 127 RETURN(E_BAD_ARGUMENT); 128 129 if (menu->status & _POSTED) 130 RETURN(E_POSTED); 131 132 if (menu->items) 133 _nc_Disconnect_Items(menu); 134 135 if ((menu->status & _MARK_ALLOCATED) && menu->mark) 136 free(menu->mark); 137 138 free(menu); 139 RETURN(E_OK); 140 } 141 142 /* m_new.c ends here */ 143