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      1 /*	$NetBSD: post.c,v 1.10 2016/03/09 19:47:13 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998-2000 Brett Lymn
      5  *                         (blymn (at) baea.com.au, brett_lymn (at) 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 1.10 2016/03/09 19:47:13 christos 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 	form->in_init = 1;
     67 	if (form->form_init != NULL)
     68 		form->form_init(form);
     69 
     70 	if (form->field_init != NULL)
     71 		form->field_init(form);
     72 	form->in_init = 0;
     73 
     74 	_formi_pos_first_field(form);
     75 	if ((status = _formi_draw_page(form)) != E_OK)
     76 		return status;
     77 
     78 	form->posted = 1;
     79 	pos_form_cursor(form);
     80 
     81 	return E_OK;
     82 }
     83 
     84 /*
     85  * Unpost the form from the screen
     86  */
     87 int
     88 unpost_form(FORM *form)
     89 {
     90 
     91 	if (form == NULL)
     92 		return E_BAD_ARGUMENT;
     93 
     94 	if (form->posted != 1)
     95 		return E_NOT_POSTED;
     96 
     97 	if (form->in_init == 1)
     98 		return E_BAD_STATE;
     99 
    100 	form->in_init = 1;
    101 	if (form->field_term != NULL)
    102 		form->field_term(form);
    103 
    104 	if (form->form_term != NULL)
    105 		form->form_term(form);
    106 	form->in_init = 0;
    107 
    108 	wclear(form->scrwin);
    109 
    110 	form->posted = 0;
    111 
    112 	return E_OK;
    113 }
    114 
    115