1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /* Copyright (c) 1988 AT&T */
23 /* All Rights Reserved */
24
25
26 /*
27 * Copyright (c) 1997, by Sun Microsystems, Inc.
28 * All rights reserved.
29 */
30
31 /*LINTLIBRARY*/
32
33 #include <sys/types.h>
34 #include "utility.h"
35
36 #define first(f) (0)
37 #define last(f) (f->maxpage - 1)
38
39 /* next - return next page after current page(cyclic) */
40 static int
next(FORM * f)41 next(FORM *f)
42 {
43 int p = P(f);
44
45 if (++p > last(f))
46 p = first(f);
47 return (p);
48 }
49
50 /* prev - return previous page before current page(cyclic) */
51 static int
prev(FORM * f)52 prev(FORM *f)
53 {
54 int p = P(f);
55
56 if (--p < first(f))
57 p = last(f);
58 return (p);
59 }
60
61 int
_next_page(FORM * f)62 _next_page(FORM *f)
63 {
64 return (_set_form_page(f, next(f), (FIELD *) 0));
65 }
66
67 int
_prev_page(FORM * f)68 _prev_page(FORM *f)
69 {
70 return (_set_form_page(f, prev(f), (FIELD *) 0));
71 }
72
73 int
_first_page(FORM * f)74 _first_page(FORM *f)
75 {
76 return (_set_form_page(f, first(f), (FIELD *) 0));
77 }
78
79 int
_last_page(FORM * f)80 _last_page(FORM *f)
81 {
82 return (_set_form_page(f, last(f), (FIELD *) 0));
83 }
84