post.c revision 1.6 
1/*	$NetBSD: post.c,v 1.6 2001/01/22 01:05:34 blymn 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 withough 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 "form.h"
33#include "internals.h"
34
35/*
36 * Post the form to the screen.
37 */
38int
39post_form(FORM *form)
40{
41	int rows, cols, status;
42
43	if ((form == NULL) || (form->win == NULL))
44		return E_BAD_ARGUMENT;
45
46	if (form->posted == 1)
47		return E_POSTED;
48
49	if ((form->fields == NULL) || (form->fields[0] == NULL))
50		return E_NOT_CONNECTED;
51
52	if (form->in_init == 1)
53		return E_BAD_STATE;
54
55	if (scale_form(form, &rows, &cols) != E_OK)
56		return E_SYSTEM_ERROR;
57
58	if ((form->subwin != NULL) && ((rows > getmaxy(form->subwin))
59				       || (cols > getmaxx(form->subwin)))) {
60		return E_NO_ROOM;
61	}
62
63	if (form->subwin == NULL) {
64		form->subwin_created = 1;
65		form->subwin = derwin(form->win, rows, cols, 0, 0);
66		if (form->subwin == NULL)
67			return E_SYSTEM_ERROR;
68
69	}
70
71#ifdef DEBUG
72	if (_formi_create_dbg_file() != E_OK)
73		return E_SYSTEM_ERROR;
74#endif
75
76	form->in_init = 1;
77	if (form->form_init != NULL)
78		form->form_init(form);
79
80	if (form->field_init != NULL)
81		form->field_init(form);
82	form->in_init = 0;
83
84	_formi_pos_first_field(form);
85	if ((status = _formi_draw_page(form)) != E_OK)
86		return status;
87
88	form->posted = 1;
89	pos_form_cursor(form);
90
91	return E_OK;
92}
93
94/*
95 * Unpost the form from the screen
96 */
97int
98unpost_form(FORM *form)
99{
100
101	if (form == NULL)
102		return E_BAD_ARGUMENT;
103
104	if (form->posted != 1)
105		return E_NOT_POSTED;
106
107	if (form->in_init == 1)
108		return E_BAD_STATE;
109
110	form->in_init = 1;
111	if (form->field_term != NULL)
112		form->field_term(form);
113
114	if (form->form_term != NULL)
115		form->form_term(form);
116	form->in_init = 0;
117
118	wclear(form->subwin);
119	if (form->subwin_created == 1) {
120		delwin(form->subwin);
121		form->subwin_created = 0;
122	}
123
124	form->posted = 0;
125
126	return E_OK;
127}
128
129