xref: /netbsd/lib/libform/post.c (revision 6550d01e)
1 /*	$NetBSD: post.c,v 1.9 2003/03/09 00:57:19 lukem Exp $	*/
2 
3 /*-
4  * Copyright (c) 1998-2000 Brett Lymn
5  *                         (blymn@baea.com.au, brett_lymn@yahoo.com.au)
6  * All rights reserved.
7  *
8  * This code has been donated to The NetBSD Foundation by the Author.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. The name of the author may not be used to endorse or promote products
16  *    derived from this software without specific prior written permission
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  *
29  *
30  */
31 
32 #include <sys/cdefs.h>
33 __RCSID("$NetBSD: post.c,v 1.9 2003/03/09 00:57:19 lukem Exp $");
34 
35 #include "form.h"
36 #include "internals.h"
37 
38 /*
39  * Post the form to the screen.
40  */
41 int
42 post_form(FORM *form)
43 {
44 	int rows, cols, status;
45 
46 	if (form == NULL)
47 		return E_BAD_ARGUMENT;
48 
49 	if (form->posted == 1)
50 		return E_POSTED;
51 
52 	if ((form->fields == NULL) || (form->fields[0] == NULL))
53 		return E_NOT_CONNECTED;
54 
55 	if (form->in_init == 1)
56 		return E_BAD_STATE;
57 
58 	if (scale_form(form, &rows, &cols) != E_OK)
59 		return E_SYSTEM_ERROR;
60 
61 	if ((form->scrwin != NULL) && ((rows > getmaxy(form->scrwin))
62 				       || (cols > getmaxx(form->scrwin)))) {
63 		return E_NO_ROOM;
64 	}
65 
66 #ifdef DEBUG
67 	if (_formi_create_dbg_file() != E_OK)
68 		return E_SYSTEM_ERROR;
69 #endif
70 
71 	form->in_init = 1;
72 	if (form->form_init != NULL)
73 		form->form_init(form);
74 
75 	if (form->field_init != NULL)
76 		form->field_init(form);
77 	form->in_init = 0;
78 
79 	_formi_pos_first_field(form);
80 	if ((status = _formi_draw_page(form)) != E_OK)
81 		return status;
82 
83 	form->posted = 1;
84 	pos_form_cursor(form);
85 
86 	return E_OK;
87 }
88 
89 /*
90  * Unpost the form from the screen
91  */
92 int
93 unpost_form(FORM *form)
94 {
95 
96 	if (form == NULL)
97 		return E_BAD_ARGUMENT;
98 
99 	if (form->posted != 1)
100 		return E_NOT_POSTED;
101 
102 	if (form->in_init == 1)
103 		return E_BAD_STATE;
104 
105 	form->in_init = 1;
106 	if (form->field_term != NULL)
107 		form->field_term(form);
108 
109 	if (form->form_term != NULL)
110 		form->form_term(form);
111 	form->in_init = 0;
112 
113 	wclear(form->scrwin);
114 
115 	form->posted = 0;
116 
117 	return E_OK;
118 }
119 
120