/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*      Copyright (c) 1988 AT&T */
/*        All Rights Reserved   */


/*
 * Copyright (c) 1997, by Sun Mircrosystems, Inc.
 * All rights reserved.
 */

/*LINTLIBRARY*/

#include <sys/types.h>
#include "private.h"

int
set_top_row(MENU *m, int top)
{
        ITEM *current;

        if (m) {
                if (Indriver(m)) {
                        return (E_BAD_STATE);
                }
                if (!Items(m)) {
                        return (E_NOT_CONNECTED);
                }
                if (top < 0 || top > Rows(m) - Height(m)) {
                        return (E_BAD_ARGUMENT);
                }
                if (top != Top(m)) {
                        /* Get linking information if not already there */
                        if (LinkNeeded(m)) {
                                _link_items(m);
                        }
                        /* Set current to toprow */
                        current = IthItem(m, RowMajor(m) ? top * Cols(m) : top);
                        Pindex(m) = 0;          /* Clear the pattern buffer */
                        IthPattern(m, Pindex(m)) = '\0';
                        _affect_change(m, top, current);
                }
        } else {
                return (E_BAD_ARGUMENT);
        }
        return (E_OK);
}

int
top_row(MENU *m)
{
        if (m && Items(m) && IthItem(m, 0)) {
                return (Top(m));
        } else {
                return (-1);
        }
}