1 /* $OpenBSD: m_item_top.c,v 1.6 2023/10/17 09:52:10 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright 2020,2021 Thomas E. Dickey * 5 * Copyright 1998-2004,2010 Free Software Foundation, Inc. * 6 * * 7 * Permission is hereby granted, free of charge, to any person obtaining a * 8 * copy of this software and associated documentation files (the * 9 * "Software"), to deal in the Software without restriction, including * 10 * without limitation the rights to use, copy, modify, merge, publish, * 11 * distribute, distribute with modifications, sublicense, and/or sell * 12 * copies of the Software, and to permit persons to whom the Software is * 13 * furnished to do so, subject to the following conditions: * 14 * * 15 * The above copyright notice and this permission notice shall be included * 16 * in all copies or substantial portions of the Software. * 17 * * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 25 * * 26 * Except as contained in this notice, the name(s) of the above copyright * 27 * holders shall not be used in advertising or otherwise to promote the * 28 * sale, use or other dealings in this Software without prior written * 29 * authorization. * 30 ****************************************************************************/ 31 32 /**************************************************************************** 33 * Author: Juergen Pfeifer, 1995,1997 * 34 ****************************************************************************/ 35 36 /*************************************************************************** 37 * Module m_item_top * 38 * Set and get top menus item * 39 ***************************************************************************/ 40 41 #include "menu.priv.h" 42 43 MODULE_ID("$Id: m_item_top.c,v 1.6 2023/10/17 09:52:10 nicm Exp $") 44 45 /*--------------------------------------------------------------------------- 46 | Facility : libnmenu 47 | Function : int set_top_row(MENU *menu, int row) 48 | 49 | Description : Makes the specified row the top row in the menu 50 | 51 | Return Values : E_OK - success 52 | E_BAD_ARGUMENT - not a menu pointer or invalid row 53 | E_NOT_CONNECTED - there are no items for the menu 54 +--------------------------------------------------------------------------*/ 55 MENU_EXPORT(int) 56 set_top_row(MENU *menu, int row) 57 { 58 T((T_CALLED("set_top_row(%p,%d)"), (void *)menu, row)); 59 60 if (menu) 61 { 62 if (menu->status & _IN_DRIVER) 63 RETURN(E_BAD_STATE); 64 if (menu->items == (ITEM **)0) 65 RETURN(E_NOT_CONNECTED); 66 67 if ((row < 0) || (row > (menu->rows - menu->arows))) 68 RETURN(E_BAD_ARGUMENT); 69 } 70 else 71 RETURN(E_BAD_ARGUMENT); 72 73 if (row != menu->toprow) 74 { 75 ITEM *item; 76 77 if (menu->status & _LINK_NEEDED) 78 _nc_Link_Items(menu); 79 80 item = menu->items[(menu->opt & O_ROWMAJOR) ? (row * menu->cols) : row]; 81 assert(menu->pattern); 82 Reset_Pattern(menu); 83 _nc_New_TopRow_and_CurrentItem(menu, row, item); 84 } 85 86 RETURN(E_OK); 87 } 88 89 /*--------------------------------------------------------------------------- 90 | Facility : libnmenu 91 | Function : int top_row(const MENU *) 92 | 93 | Description : Return the top row of the menu 94 | 95 | Return Values : The row number or ERR if there is no row 96 +--------------------------------------------------------------------------*/ 97 MENU_EXPORT(int) 98 top_row(const MENU *menu) 99 { 100 T((T_CALLED("top_row(%p)"), (const void *)menu)); 101 if (menu && menu->items && *(menu->items)) 102 { 103 assert((menu->toprow >= 0) && (menu->toprow < menu->rows)); 104 returnCode(menu->toprow); 105 } 106 else 107 returnCode(ERR); 108 } 109 110 /* m_item_top.c ends here */ 111