| Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 1 | /**************************************************************************** |
| 2 | * Copyright (c) 1998-2003,2004 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_item_top * |
| 35 | * Set and get top menus item * |
| 36 | ***************************************************************************/ |
| 37 | |
| 38 | #include "menu.priv.h" |
| 39 | |
| 40 | MODULE_ID("$Id: m_item_top.c,v 1.10 2004/12/11 23:29:34 tom Exp $") |
| 41 | |
| 42 | /*--------------------------------------------------------------------------- |
| 43 | | Facility : libnmenu |
| 44 | | Function : int set_top_row(MENU *menu, int row) |
| 45 | | |
| 46 | | Description : Makes the specified row the top row in the menu |
| 47 | | |
| 48 | | Return Values : E_OK - success |
| 49 | | E_BAD_ARGUMENT - not a menu pointer or invalid row |
| 50 | | E_NOT_CONNECTED - there are no items for the menu |
| 51 | +--------------------------------------------------------------------------*/ |
| 52 | NCURSES_EXPORT(int) |
| 53 | set_top_row(MENU * menu, int row) |
| 54 | { |
| 55 | ITEM *item; |
| 56 | |
| 57 | T((T_CALLED("set_top_row(%p,%d)"), menu, row)); |
| 58 | |
| 59 | if (menu) |
| 60 | { |
| 61 | if (menu->status & _IN_DRIVER) |
| 62 | RETURN(E_BAD_STATE); |
| 63 | if (menu->items == (ITEM **) 0) |
| 64 | RETURN(E_NOT_CONNECTED); |
| 65 | |
| 66 | if ((row < 0) || (row > (menu->rows - menu->arows))) |
| 67 | RETURN(E_BAD_ARGUMENT); |
| 68 | } |
| 69 | else |
| 70 | RETURN(E_BAD_ARGUMENT); |
| 71 | |
| 72 | if (row != menu->toprow) |
| 73 | { |
| 74 | if (menu->status & _LINK_NEEDED) |
| 75 | _nc_Link_Items(menu); |
| 76 | |
| 77 | item = menu->items[(menu->opt & O_ROWMAJOR) ? (row * menu->cols) : row]; |
| 78 | assert(menu->pattern); |
| 79 | Reset_Pattern(menu); |
| 80 | _nc_New_TopRow_and_CurrentItem(menu, row, item); |
| 81 | } |
| 82 | |
| 83 | RETURN(E_OK); |
| 84 | } |
| 85 | |
| 86 | /*--------------------------------------------------------------------------- |
| 87 | | Facility : libnmenu |
| 88 | | Function : int top_row(const MENU *) |
| 89 | | |
| 90 | | Description : Return the top row of the menu |
| 91 | | |
| 92 | | Return Values : The row number or ERR if there is no row |
| 93 | +--------------------------------------------------------------------------*/ |
| 94 | NCURSES_EXPORT(int) |
| 95 | top_row(const MENU * menu) |
| 96 | { |
| 97 | T((T_CALLED("top_row(%p)"), menu)); |
| 98 | if (menu && menu->items && *(menu->items)) |
| 99 | { |
| 100 | assert((menu->toprow >= 0) && (menu->toprow < menu->rows)); |
| 101 | returnCode(menu->toprow); |
| 102 | } |
| 103 | else |
| 104 | returnCode(ERR); |
| 105 | } |
| 106 | |
| 107 | /* m_item_top.c ends here */ |