form/frm_post.c

   1 /****************************************************************************
   2  * Copyright (c) 1998 Free Software Foundation, Inc.                        *
   3  *                                                                          *
   4  * Permission is hereby granted, free of charge, to any person obtaining a  *
   5  * copy of this software and associated documentation files (the            *
   6  * "Software"), to deal in the Software without restriction, including      *
   7  * without limitation the rights to use, copy, modify, merge, publish,      *
   8  * distribute, distribute with modifications, sublicense, and/or sell       *
   9  * copies of the Software, and to permit persons to whom the Software is    *
  10  * furnished to do so, subject to the following conditions:                 *
  11  *                                                                          *
  12  * The above copyright notice and this permission notice shall be included  *
  13  * in all copies or substantial portions of the Software.                   *
  14  *                                                                          *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
  18  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
  21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
  22  *                                                                          *
  23  * Except as contained in this notice, the name(s) of the above copyright   *
  24  * holders shall not be used in advertising or otherwise to promote the     *
  25  * sale, use or other dealings in this Software without prior written       *
  26  * authorization.                                                           *
  27  ****************************************************************************/
  28
  29 /****************************************************************************
  30  *   Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997            *
  31  ****************************************************************************/
  32 #include "form.priv.h"
  33
  34 MODULE_ID("$Id: frm_post.c,v 1.4 1999/05/16 17:21:39 juergen Exp $")
  35
  36 /*---------------------------------------------------------------------------
  37 |   Facility      :  libnform
  38 |   Function      :  int post_form(FORM * form)
  39 |
  40 |   Description   :  Writes the form into its associated subwindow.
  41 |
  42 |   Return Values :  E_OK              - success
  43 |                    E_BAD_ARGUMENT    - invalid form pointer
  44 |                    E_POSTED          - form already posted
  45 |                    E_NOT_CONNECTED   - no fields connected to form
  46 |                    E_NO_ROOM         - form doesn't fit into subwindow
  47 |                    E_SYSTEM_ERROR    - system error
  48 +--------------------------------------------------------------------------*/
  49 int post_form(FORM * form)
  50 {
  51   WINDOW *formwin;
  52   int err;
  53   int page;
  54
  55   if (!form)
  56     RETURN(E_BAD_ARGUMENT);
  57
  58   if (form->status & _POSTED)
  59     RETURN(E_POSTED);
  60
  61   if (!(form->field))
  62     RETURN(E_NOT_CONNECTED);
  63
  64   formwin = Get_Form_Window(form);
  65   if ((form->cols > getmaxx(formwin)) || (form->rows > getmaxy(formwin)))
  66     RETURN(E_NO_ROOM);
  67
  68   /* reset form->curpage to an invald value. This forces Set_Form_Page
  69      to do the page initialization which is required by post_form.
  70   */
  71   page = form->curpage;
  72   form->curpage = -1;
  73   if ((err = _nc_Set_Form_Page(form,page,form->current))!=E_OK)
  74     RETURN(err);
  75
  76   form->status |= _POSTED;
  77
  78   Call_Hook(form,forminit);
  79   Call_Hook(form,fieldinit);
  80
  81   _nc_Refresh_Current_Field(form);
  82   RETURN(E_OK);
  83 }
  84
  85 /*---------------------------------------------------------------------------
  86 |   Facility      :  libnform
  87 |   Function      :  int unpost_form(FORM * form)
  88 |
  89 |   Description   :  Erase form from its associated subwindow.
  90 |
  91 |   Return Values :  E_OK            - success
  92 |                    E_BAD_ARGUMENT  - invalid form pointer
  93 |                    E_NOT_POSTED    - form isn't posted
  94 |                    E_BAD_STATE     - called from a hook routine
  95 +--------------------------------------------------------------------------*/
  96 int unpost_form(FORM * form)
  97 {
  98   if (!form)
  99     RETURN(E_BAD_ARGUMENT);
 100
 101   if (!(form->status & _POSTED))
 102     RETURN(E_NOT_POSTED);
 103
 104   if (form->status & _IN_DRIVER)
 105     RETURN(E_BAD_STATE);
 106
 107   Call_Hook(form,fieldterm);
 108   Call_Hook(form,formterm);
 109
 110   werase(Get_Form_Window(form));
 111   delwin(form->w);
 112   form->w = (WINDOW *)0;
 113   form->status &= ~_POSTED;
 114   RETURN(E_OK);
 115 }
 116
 117 /* frm_post.c ends here */