text: /* $OpenBSD: m_item_top.c,v 1.5 2010/01/12 23:22:08 nicm Exp $ */
  
  /****************************************************************************
   * Copyright (c) 1998-2003,2004 Free Software Foundation, Inc.              *
   *                                                                          *
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   * 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.                   *
   *                                                                          *
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   ****************************************************************************/
  
  /****************************************************************************
   *   Author:  Juergen Pfeifer, 1995,1997                                    *
   ****************************************************************************/
  
  /***************************************************************************
  * Module m_item_top                                                        *
  * Set and get top menus item                                               *
  ***************************************************************************/
  
  #include "menu.priv.h"
  
  MODULE_ID("$Id: m_item_top.c,v 1.5 2010/01/12 23:22:08 nicm Exp $")
  
  /*---------------------------------------------------------------------------
  |   Facility      :  libnmenu  
  |   Function      :  int set_top_row(MENU *menu, int row)
  |   
  |   Description   :  Makes the specified row the top row in the menu
  |
  |   Return Values :  E_OK             - success
  |                    E_BAD_ARGUMENT   - not a menu pointer or invalid row
  |                    E_NOT_CONNECTED  - there are no items for the menu
  +--------------------------------------------------------------------------*/
  NCURSES_EXPORT(int)
  set_top_row(MENU * menu, int row)
  {
    ITEM *item;
  
    T((T_CALLED("set_top_row(%p,%d)"), menu, row));
  
    if (menu)
      {
        if (menu->status & _IN_DRIVER)
  	RETURN(E_BAD_STATE);
        if (menu->items == (ITEM **) 0)
  	RETURN(E_NOT_CONNECTED);
  
        if ((row < 0) || (row > (menu->rows - menu->arows)))
  	RETURN(E_BAD_ARGUMENT);
      }
    else
      RETURN(E_BAD_ARGUMENT);
  
    if (row != menu->toprow)
      {
        if (menu->status & _LINK_NEEDED)
  	_nc_Link_Items(menu);
  
        item = menu->items[(menu->opt & O_ROWMAJOR) ? (row * menu->cols) : row];
        assert(menu->pattern);
        Reset_Pattern(menu);
        _nc_New_TopRow_and_CurrentItem(menu, row, item);
      }
  
    RETURN(E_OK);
  }
  
  /*---------------------------------------------------------------------------
  |   Facility      :  libnmenu  
  |   Function      :  int top_row(const MENU *)
  |   
  |   Description   :  Return the top row of the menu
  |
  |   Return Values :  The row number or ERR if there is no row
  +--------------------------------------------------------------------------*/
  NCURSES_EXPORT(int)
  top_row(const MENU * menu)
  {
    T((T_CALLED("top_row(%p)"), menu));
    if (menu && menu->items && *(menu->items))
      {
        assert((menu->toprow >= 0) && (menu->toprow < menu->rows));
        returnCode(menu->toprow);
      }
    else
      returnCode(ERR);
  }
  
  /* m_item_top.c ends here */
  