post.c revision 1.2 
1/*	$NetBSD: post.c,v 1.2 2001/01/04 12:30:37 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 (dbg == NULL) {
73		dbg = fopen("___form_dbg.out", "w");
74		if (dbg == NULL) {
75			fprintf(stderr, "Cannot open debug file!\n");
76			return E_SYSTEM_ERROR;
77		}
78	}
79#endif
80
81	form->in_init = 1;
82	if (form->form_init != NULL)
83		form->form_init(form);
84
85	if (form->field_init != NULL)
86		form->field_init(form);
87	form->in_init = 0;
88
89	if ((status = _formi_draw_page(form)) != E_OK)
90		return status;
91
92	form->posted = 1;
93	return E_OK;
94}
95
96/*
97 * Unpost the form from the screen
98 */
99int
100unpost_form(FORM *form)
101{
102
103	if (form == NULL)
104		return E_BAD_ARGUMENT;
105
106	if (form->posted != 1)
107		return E_NOT_POSTED;
108
109	if (form->in_init == 1)
110		return E_BAD_STATE;
111
112	form->in_init = 1;
113	if (form->field_term != NULL)
114		form->field_term(form);
115
116	if (form->form_term != NULL)
117		form->form_term(form);
118	form->in_init = 0;
119
120	wclear(form->subwin);
121	if (form->subwin_created == 1) {
122		delwin(form->subwin);
123		form->subwin_created = 0;
124	}
125
126	form->posted = 0;
127
128	return E_OK;
129}
130
131