1 /**************************************************************************** 2 * Copyright 2020,2021 Thomas E. Dickey * 3 * Copyright 1998-2009,2010 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Juergen Pfeifer, 1995,1997 * 32 ****************************************************************************/ 33 34 /*************************************************************************** 35 * Module m_new * 36 * Creation and destruction of new menus * 37 ***************************************************************************/ 38 39 #include "menu.priv.h" 40 41 MODULE_ID("$Id: m_new.c,v 1.26 2021/02/13 19:43:10 tom Exp $") 42 43 /*--------------------------------------------------------------------------- 44 | Facility : libnmenu 45 | Function : MENU* _nc_new_menu(SCREEN*, ITEM **items) 46 | 47 | Description : Creates a new menu connected to the item pointer 48 | array items and returns a pointer to the new menu. 49 | The new menu is initialized with the values from the 50 | default menu. 51 | 52 | Return Values : NULL on error 53 +--------------------------------------------------------------------------*/ 54 MENU_EXPORT(MENU *) 55 NCURSES_SP_NAME(new_menu) (NCURSES_SP_DCLx ITEM **items) 56 { 57 int err = E_SYSTEM_ERROR; 58 MENU *menu = typeCalloc(MENU, 1); 59 60 T((T_CALLED("new_menu(%p,%p)"), (void *)SP_PARM, (void *)items)); 61 if (menu) 62 { 63 T((T_CREATE("menu %p"), (void *)menu)); 64 *menu = _nc_Default_Menu; 65 menu->status = 0; 66 menu->rows = menu->frows; 67 menu->cols = menu->fcols; 68 #if NCURSES_SP_FUNCS 69 /* This ensures userwin and usersub are always non-null, 70 so we can derive always the SCREEN that this menu is 71 running on. */ 72 menu->userwin = SP_PARM->_stdscr; 73 menu->usersub = SP_PARM->_stdscr; 74 #endif 75 if (items && *items) 76 { 77 if (!_nc_Connect_Items(menu, items)) 78 { 79 err = E_NOT_CONNECTED; 80 free(menu); 81 menu = (MENU *)0; 82 } 83 else 84 err = E_OK; 85 } 86 } 87 88 if (!menu) 89 SET_ERROR(err); 90 91 returnMenu(menu); 92 } 93 94 /*--------------------------------------------------------------------------- 95 | Facility : libnmenu 96 | Function : MENU *new_menu(ITEM **items) 97 | 98 | Description : Creates a new menu connected to the item pointer 99 | array items and returns a pointer to the new menu. 100 | The new menu is initialized with the values from the 101 | default menu. 102 | 103 | Return Values : NULL on error 104 +--------------------------------------------------------------------------*/ 105 #if NCURSES_SP_FUNCS 106 MENU_EXPORT(MENU *) 107 new_menu(ITEM **items) 108 { 109 return NCURSES_SP_NAME(new_menu) (CURRENT_SCREEN, items); 110 } 111 #endif 112 113 /*--------------------------------------------------------------------------- 114 | Facility : libnmenu 115 | Function : int free_menu(MENU *menu) 116 | 117 | Description : Disconnects menu from its associated item pointer 118 | array and frees the storage allocated for the menu. 119 | 120 | Return Values : E_OK - success 121 | E_BAD_ARGUMENT - Invalid menu pointer passed 122 | E_POSTED - Menu is already posted 123 +--------------------------------------------------------------------------*/ 124 MENU_EXPORT(int) 125 free_menu(MENU *menu) 126 { 127 T((T_CALLED("free_menu(%p)"), (void *)menu)); 128 if (!menu) 129 RETURN(E_BAD_ARGUMENT); 130 131 if (menu->status & _POSTED) 132 RETURN(E_POSTED); 133 134 if (menu->items) 135 _nc_Disconnect_Items(menu); 136 137 if ((menu->status & _MARK_ALLOCATED) && menu->mark) 138 free(menu->mark); 139 140 free(menu); 141 RETURN(E_OK); 142 } 143 144 /* m_new.c ends here */ 145