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/* $OpenBSD: m_item_top.c,v 1.1 1997/12/03 05:31:21 millert Exp $ */
/*-----------------------------------------------------------------------------+
| The ncurses menu library is Copyright (C) 1995-1997 |
| by Juergen Pfeifer <Juergen.Pfeifer@T-Online.de> |
| All Rights Reserved. |
| |
| Permission to use, copy, modify, and distribute this software and its |
| documentation for any purpose and without fee is hereby granted, provided |
| that the above copyright notice appear in all copies and that both that |
| copyright notice and this permission notice appear in supporting |
| documentation, and that the name of the above listed copyright holder(s) not |
| be used in advertising or publicity pertaining to distribution of the |
| software without specific, written prior permission. |
| |
| THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD TO |
| THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT- |
| NESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR |
| ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RE- |
| SULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, |
| NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH |
| THE USE OR PERFORMANCE OF THIS SOFTWARE. |
+-----------------------------------------------------------------------------*/
/***************************************************************************
* Module m_item_top *
* Set and get top menus item *
***************************************************************************/
#include "menu.priv.h"
MODULE_ID("Id: m_item_top.c,v 1.1 1997/10/21 08:44:31 juergen 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
+--------------------------------------------------------------------------*/
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
+--------------------------------------------------------------------------*/
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 */
|
