form/frm_post.c

   1 /****************************************************************************
   2  * Copyright 2020 Thomas E. Dickey                                          *
   3  * Copyright 1998-2010,2012 Free Software Foundation, Inc.                  *
   4  *                                                                          *
   5  * Permission is hereby granted, free of charge, to any person obtaining a  *
   6  * copy of this software and associated documentation files (the            *
   7  * "Software"), to deal in the Software without restriction, including      *
   8  * without limitation the rights to use, copy, modify, merge, publish,      *
   9  * distribute, distribute with modifications, sublicense, and/or sell       *
  10  * copies of the Software, and to permit persons to whom the Software is    *
  11  * furnished to do so, subject to the following conditions:                 *
  12  *                                                                          *
  13  * The above copyright notice and this permission notice shall be included  *
  14  * in all copies or substantial portions of the Software.                   *
  15  *                                                                          *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
  18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
  19  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
  22  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
  23  *                                                                          *
  24  * Except as contained in this notice, the name(s) of the above copyright   *
  25  * holders shall not be used in advertising or otherwise to promote the     *
  26  * sale, use or other dealings in this Software without prior written       *
  27  * authorization.                                                           *
  28  ****************************************************************************/
  29
  30 /****************************************************************************
  31  *   Author:  Juergen Pfeifer, 1995,1997                                    *
  32  ****************************************************************************/
  33
  34 #include "form.priv.h"
  35
  36 MODULE_ID("$Id: frm_post.c,v 1.14 2020/05/24 01:40:20 anonymous.maarten Exp $")
  37
  38 /*---------------------------------------------------------------------------
  39 |   Facility      :  libnform
  40 |   Function      :  int post_form(FORM * form)
  41 |
  42 |   Description   :  Writes the form into its associated subwindow.
  43 |
  44 |   Return Values :  E_OK              - success
  45 |                    E_BAD_ARGUMENT    - invalid form pointer
  46 |                    E_POSTED          - form already posted
  47 |                    E_NOT_CONNECTED   - no fields connected to form
  48 |                    E_NO_ROOM         - form doesn't fit into subwindow
  49 |                    E_SYSTEM_ERROR    - system error
  50 +--------------------------------------------------------------------------*/
  51 FORM_EXPORT(int)
  52 post_form(FORM *form)
  53 {
  54   WINDOW *formwin;
  55   int err;
  56   int page;
  57
  58   T((T_CALLED("post_form(%p)"), (void *)form));
  59
  60   if (!form)
  61     RETURN(E_BAD_ARGUMENT);
  62
  63   if (form->status & _POSTED)
  64     RETURN(E_POSTED);
  65
  66   if (!(form->field))
  67     RETURN(E_NOT_CONNECTED);
  68
  69   formwin = Get_Form_Window(form);
  70   if ((form->cols > getmaxx(formwin)) || (form->rows > getmaxy(formwin)))
  71     RETURN(E_NO_ROOM);
  72
  73   /* reset form->curpage to an invalid value. This forces Set_Form_Page
  74      to do the page initialization which is required by post_form.
  75    */
  76   page = form->curpage;
  77   form->curpage = -1;
  78   if ((err = _nc_Set_Form_Page(form, page, form->current)) != E_OK)
  79     RETURN(err);
  80
  81   SetStatus(form, _POSTED);
  82
  83   Call_Hook(form, forminit);
  84   Call_Hook(form, fieldinit);
  85
  86   _nc_Refresh_Current_Field(form);
  87   RETURN(E_OK);
  88 }
  89
  90 /*---------------------------------------------------------------------------
  91 |   Facility      :  libnform
  92 |   Function      :  int unpost_form(FORM * form)
  93 |
  94 |   Description   :  Erase form from its associated subwindow.
  95 |
  96 |   Return Values :  E_OK            - success
  97 |                    E_BAD_ARGUMENT  - invalid form pointer
  98 |                    E_NOT_POSTED    - form isn't posted
  99 |                    E_BAD_STATE     - called from a hook routine
 100 +--------------------------------------------------------------------------*/
 101 FORM_EXPORT(int)
 102 unpost_form(FORM *form)
 103 {
 104   T((T_CALLED("unpost_form(%p)"), (void *)form));
 105
 106   if (!form)
 107     RETURN(E_BAD_ARGUMENT);
 108
 109   if (!(form->status & _POSTED))
 110     RETURN(E_NOT_POSTED);
 111
 112   if (form->status & _IN_DRIVER)
 113     RETURN(E_BAD_STATE);
 114
 115   Call_Hook(form, fieldterm);
 116   Call_Hook(form, formterm);
 117
 118   werase(Get_Form_Window(form));
 119   delwin(form->w);
 120   form->w = (WINDOW *)0;
 121   ClrStatus(form, _POSTED);
 122   RETURN(E_OK);
 123 }
 124
 125 /* frm_post.c ends here */