Source/CursesDialog/form/frm_post.c

   1 /****************************************************************************
   2  * Copyright (c) 1998 Free Software Foundation, Inc.                        *
   3  *                                                                          *
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  10  * furnished to do so, subject to the following conditions:                 *
  11  *                                                                          *
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  13  * in all copies or substantial portions of the Software.                   *
  14  *                                                                          *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
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  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
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  28
  29 /****************************************************************************
  30  *   Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997            *
  31  ****************************************************************************/
  32 #include "form.priv.h"
  33
  34 MODULE_ID("$Id$")
  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   int height, width;
  55
  56   if (!form)
  57     RETURN(E_BAD_ARGUMENT);
  58
  59   if (form->status & _POSTED)
  60     RETURN(E_POSTED);
  61
  62   if (!(form->field))
  63     RETURN(E_NOT_CONNECTED);
  64
  65   formwin = Get_Form_Window(form);
  66 #if defined(__LSB_VERSION__)
  67   getmaxyx(formwin, height, width);
  68 #else
  69   width  = getmaxx(formwin);
  70   height = getmaxy(formwin);
  71 #endif
  72   if ((form->cols > width) || (form->rows > height))
  73     RETURN(E_NO_ROOM);
  74
  75   /* reset form->curpage to an invald value. This forces Set_Form_Page
  76      to do the page initialization which is required by post_form.
  77   */
  78   page = form->curpage;
  79   form->curpage = -1;
  80   if ((err = _nc_Set_Form_Page(form,page,form->current))!=E_OK)
  81     RETURN(err);
  82
  83   form->status |= _POSTED;
  84
  85   Call_Hook(form,forminit);
  86   Call_Hook(form,fieldinit);
  87
  88   _nc_Refresh_Current_Field(form);
  89   RETURN(E_OK);
  90 }
  91
  92 /*---------------------------------------------------------------------------
  93 |   Facility      :  libnform
  94 |   Function      :  int unpost_form(FORM * form)
  95 |
  96 |   Description   :  Erase form from its associated subwindow.
  97 |
  98 |   Return Values :  E_OK            - success
  99 |                    E_BAD_ARGUMENT  - invalid form pointer
 100 |                    E_NOT_POSTED    - form isn't posted
 101 |                    E_BAD_STATE     - called from a hook routine
 102 +--------------------------------------------------------------------------*/
 103 int unpost_form(FORM * form)
 104 {
 105   if (!form)
 106     RETURN(E_BAD_ARGUMENT);
 107
 108   if (!(form->status & _POSTED))
 109     RETURN(E_NOT_POSTED);
 110
 111   if (form->status & _IN_DRIVER)
 112     RETURN(E_BAD_STATE);
 113
 114   Call_Hook(form,fieldterm);
 115   Call_Hook(form,formterm);
 116
 117   werase(Get_Form_Window(form));
 118   delwin(form->w);
 119   form->w = (WINDOW *)0;
 120   form->status &= ~_POSTED;
 121   RETURN(E_OK);
 122 }
 123
 124 /* frm_post.c ends here */