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/* $OpenBSD: m_item_top.c,v 1.4 2001/01/22 18:02:04 millert Exp $ */
/****************************************************************************
* Copyright (c) 1998,2000 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997 *
****************************************************************************/
/***************************************************************************
* Module m_item_top *
* Set and get top menus item *
***************************************************************************/
#include "menu.priv.h"
MODULE_ID("$From: m_item_top.c,v 1.5 2000/12/10 02:16:48 tom Exp $")
/*---------------------------------------------------------------------------
| Facility : libnmenu
| Function : int set_top_row(MENU *menu, int row)
|
| Description : Makes the speified row the top row in the menu
|
| Return Values : E_OK - success
| E_BAD_ARGUMENT - not a menu pointer or invalid row
| E_NOT_CONNECTED - there are no items for the menu
+--------------------------------------------------------------------------*/
NCURSES_EXPORT(int)
set_top_row (MENU * menu, int row)
{
ITEM *item;
if (menu)
{
if ( menu->status & _IN_DRIVER )
RETURN(E_BAD_STATE);
if (menu->items == (ITEM **)0)
RETURN(E_NOT_CONNECTED);
if ((row<0) || (row > (menu->rows - menu->arows)))
RETURN(E_BAD_ARGUMENT);
}
else
RETURN(E_BAD_ARGUMENT);
if (row != menu->toprow)
{
if (menu->status & _LINK_NEEDED)
_nc_Link_Items(menu);
item = menu->items[ (menu->opt&O_ROWMAJOR) ? (row*menu->cols) : row ];
assert(menu->pattern);
Reset_Pattern(menu);
_nc_New_TopRow_and_CurrentItem(menu, row, item);
}
RETURN(E_OK);
}
/*---------------------------------------------------------------------------
| Facility : libnmenu
| Function : int top_row(const MENU *)
|
| Description : Return the top row of the menu
|
| Return Values : The row number or ERR if there is no row
+--------------------------------------------------------------------------*/
NCURSES_EXPORT(int)
top_row (const MENU * menu)
{
if (menu && menu->items && *(menu->items))
{
assert( (menu->toprow>=0) && (menu->toprow < menu->rows) );
return menu->toprow;
}
else
return(ERR);
}
/* m_item_top.c ends here */
|
