menu/common/connect.c

	connect.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * 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.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"    /* SVr4.0 1.8   */

/*LINTLIBRARY*/

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

/* Connect and disconnect an item list from a menu */


/* Find the maximum length name and description */

static void
maxlengths(MENU *m)
{
    int maxn, maxd;
    ITEM **ip;

    maxn = maxd = 0;
    for (ip = Items(m); *ip; ip++) {
        if (NameLen(*ip) > maxn) {
            maxn = NameLen(*ip);
        }
        if (DescriptionLen(*ip) > maxd) {
            maxd = DescriptionLen(*ip);
        }
    }
    MaxName(m) = maxn;
    MaxDesc(m) = maxd;
}

int
_connect(MENU *m, ITEM **items)
{
    ITEM **ip;
    int i;

    /* Is the list of items connected to any other menu? */
    for (ip = items; *ip; ip++) {
        /* Return Null if item points to a menu */
        if (Imenu(*ip)) {
            return (FALSE);
        }
    }

    for (i = 0, ip = items; *ip; ip++) {
        /* Return FALSE if this item is a prevoious item */
        if (Imenu(*ip)) {
            for (ip = items; *ip; ip++) {
                /* Reset index and menu pointers */
                Index(*ip) = 0;
                Imenu(*ip) = (MENU *) NULL;
            }
            return (FALSE);
        }
        if (OneValue(m)) {
            /* Set all values to FALSE if selection not allowed */
            Value(*ip) = FALSE;
        }
        Index(*ip) = i++;
        Imenu(*ip) = m;
    }

    Nitems(m) = i;
    Items(m) = items;

    /* Go pick up the sizes of names and descriptions */
    maxlengths(m);

    /* Set up match buffer */
    if ((Pattern(m) = (char *)malloc((unsigned)MaxName(m)+1)) ==
        (char *)0) {
        return (FALSE);
    }

    IthPattern(m, 0) = '\0';
    Pindex(m) = 0;
    (void) set_menu_format(m, FRows(m), FCols(m));
    Current(m) = IthItem(m, 0);
    Top(m) = 0;
    return (TRUE);
}

void
_disconnect(MENU *m)
{
    ITEM **ip;

    for (ip = Items(m); *ip; ip++) {
        /* Release items for another menu */
        Imenu(*ip) = (MENU *) NULL;
    }
    free(Pattern(m));
    Pattern(m) = NULL;
    Items(m) = (ITEM **) NULL;
    Nitems(m) = 0;
}