lib/libform/post.c

   1 /*      $NetBSD: post.c,v 1.8 2001/06/13 10:45:59 wiz 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("$NetBSD$");
  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