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 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 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 62 _next_page(FORM *f) 63 { 64 return (_set_form_page(f, next(f), (FIELD *) 0)); 65 } 66 67 int 68 _prev_page(FORM *f) 69 { 70 return (_set_form_page(f, prev(f), (FIELD *) 0)); 71 } 72 73 int 74 _first_page(FORM *f) 75 { 76 return (_set_form_page(f, first(f), (FIELD *) 0)); 77 } 78 79 int 80 _last_page(FORM *f) 81 { 82 return (_set_form_page(f, last(f), (FIELD *) 0)); 83 } 84