text: /****************************************************************************
   * Copyright (c) 1998 Free Software Foundation, Inc.                        *
   *                                                                          *
   * Permission is hereby granted, free of charge, to any person obtaining a  *
   * copy of this software and associated documentation files (the            *
   * "Software"), to deal in the Software without restriction, including      *
   * without limitation the rights to use, copy, modify, merge, publish,      *
   * distribute, distribute with modifications, sublicense, and/or sell       *
   * copies of the Software, and to permit persons to whom the Software is    *
   * furnished to do so, subject to the following conditions:                 *
   *                                                                          *
   * The above copyright notice and this permission notice shall be included  *
   * in all copies or substantial portions of the Software.                   *
   *                                                                          *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
   * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
   * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
   * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
   * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
   *                                                                          *
   * Except as contained in this notice, the name(s) of the above copyright   *
   * holders shall not be used in advertising or otherwise to promote the     *
   * sale, use or other dealings in this Software without prior written       *
   * authorization.                                                           *
   ****************************************************************************/
  
  /****************************************************************************
   *   Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997            *
   ****************************************************************************/
  
  #include "form.priv.h"
  
  MODULE_ID("$Id$")
  
  /*---------------------------------------------------------------------------
  |   Facility      :  libnform
  |   Function      :  int set_form_page(FORM * form,int  page)
  |
  |   Description   :  Set the page number of the form.
  |
  |   Return Values :  E_OK              - success
  |                    E_BAD_ARGUMENT    - invalid form pointer or page number
  |                    E_BAD_STATE       - called from a hook routine
  |                    E_INVALID_FIELD   - current field can't be left
  |                    E_SYSTEM_ERROR    - system error
  +--------------------------------------------------------------------------*/
  int set_form_page(FORM * form, int page)
  {
    int err = E_OK;
  
    if ( !form || (page<0) || (page>=form->maxpage) )
      RETURN(E_BAD_ARGUMENT);
  
    if (!(form->status & _POSTED))
      {
        form->curpage = page;
        form->current = _nc_First_Active_Field(form);
    }
    else
      {
        if (form->status & _IN_DRIVER)
  	err = E_BAD_STATE;
        else
  	{
  	  if (form->curpage != page)
  	    {
  	      if (!_nc_Internal_Validation(form))
  		err = E_INVALID_FIELD;
  	      else
  		{
  		  Call_Hook(form,fieldterm);
  		  Call_Hook(form,formterm);
  		  err = _nc_Set_Form_Page(form,page,(FIELD *)0);
  		  Call_Hook(form,forminit);
  		  Call_Hook(form,fieldinit);
  		  _nc_Refresh_Current_Field(form);
  		}
  	    }
  	}
      }
    RETURN(err);
  }
  
  /*---------------------------------------------------------------------------
  |   Facility      :  libnform
  |   Function      :  int form_page(const FORM * form)
  |
  |   Description   :  Return the current page of the form.
  |
  |   Return Values :  >= 0  : current page number
  |                    -1    : invalid form pointer
  +--------------------------------------------------------------------------*/
  int form_page(const FORM * form)
  {
    return Normalize_Form(form)->curpage;
  }
  
  /* frm_page.c ends here */
  