contrib/ncurses/form/frm_page.c

   1 /****************************************************************************
   2  * Copyright (c) 1998-2003,2004 Free Software Foundation, Inc.              *
   3  *                                                                          *
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  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.   *
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  21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
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  23  * Except as contained in this notice, the name(s) of the above copyright   *
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  28
  29 /****************************************************************************
  30  *   Author:  Juergen Pfeifer, 1995,1997                                    *
  31  ****************************************************************************/
  32
  33 #include "form.priv.h"
  34
  35 MODULE_ID("$Id: frm_page.c,v 1.10 2004/12/11 22:08:21 tom Exp $")
  36
  37 /*---------------------------------------------------------------------------
  38 |   Facility      :  libnform
  39 |   Function      :  int set_form_page(FORM * form,int  page)
  40 |
  41 |   Description   :  Set the page number of the form.
  42 |
  43 |   Return Values :  E_OK              - success
  44 |                    E_BAD_ARGUMENT    - invalid form pointer or page number
  45 |                    E_BAD_STATE       - called from a hook routine
  46 |                    E_INVALID_FIELD   - current field can't be left
  47 |                    E_SYSTEM_ERROR    - system error
  48 +--------------------------------------------------------------------------*/
  49 NCURSES_EXPORT(int)
  50 set_form_page(FORM *form, int page)
  51 {
  52   int err = E_OK;
  53
  54   T((T_CALLED("set_form_page(%p,%d)"), form, page));
  55
  56   if (!form || (page < 0) || (page >= form->maxpage))
  57     RETURN(E_BAD_ARGUMENT);
  58
  59   if (!(form->status & _POSTED))
  60     {
  61       form->curpage = page;
  62       form->current = _nc_First_Active_Field(form);
  63     }
  64   else
  65     {
  66       if (form->status & _IN_DRIVER)
  67         err = E_BAD_STATE;
  68       else
  69         {
  70           if (form->curpage != page)
  71             {
  72               if (!_nc_Internal_Validation(form))
  73                 err = E_INVALID_FIELD;
  74               else
  75                 {
  76                   Call_Hook(form, fieldterm);
  77                   Call_Hook(form, formterm);
  78                   err = _nc_Set_Form_Page(form, page, (FIELD *)0);
  79                   Call_Hook(form, forminit);
  80                   Call_Hook(form, fieldinit);
  81                   _nc_Refresh_Current_Field(form);
  82                 }
  83             }
  84         }
  85     }
  86   RETURN(err);
  87 }
  88
  89 /*---------------------------------------------------------------------------
  90 |   Facility      :  libnform
  91 |   Function      :  int form_page(const FORM * form)
  92 |
  93 |   Description   :  Return the current page of the form.
  94 |
  95 |   Return Values :  >= 0  : current page number
  96 |                    -1    : invalid form pointer
  97 +--------------------------------------------------------------------------*/
  98 NCURSES_EXPORT(int)
  99 form_page(const FORM *form)
 100 {
 101   T((T_CALLED("form_page(%p)"), form));
 102
 103   returnCode(Normalize_Form(form)->curpage);
 104 }
 105
 106 /* frm_page.c ends here */