/****************************************************************************
 * Copyright (c) 1998,2000 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.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
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 * 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    *
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 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
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 * 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, 1995,1997                                    *
 ****************************************************************************/

/***************************************************************************
* Module m_item_opt                                                        *
* Menus item option routines                                               *
***************************************************************************/

#include "menu.priv.h"

MODULE_ID("$Id: m_item_opt.c,v 1.14 2003/11/08 20:50:19 tom Exp $")

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu  
|   Function      :  int set_item_opts(ITEM *item, Item_Options opts)  
|   
|   Description   :  Set the options of the item. If there are relevant
|                    changes, the item is connected and the menu is posted,
|                    the menu will be redisplayed.
|
|   Return Values :  E_OK            - success
|                    E_BAD_ARGUMENT  - invalid item options
+--------------------------------------------------------------------------*/
NCURSES_EXPORT(int)
set_item_opts (ITEM *item, Item_Options opts)
{ 
  opts &= ALL_ITEM_OPTS;

  if (opts & ~ALL_ITEM_OPTS)
    RETURN(E_BAD_ARGUMENT);
  
  if (item)
    {
      if (item->opt != opts)
	{		
	  MENU *menu = item->imenu;
	  
	  item->opt = opts;
	  
	  if ((!(opts & O_SELECTABLE)) && item->value)
	    item->value = FALSE;
	  
	  if (menu && (menu->status & _POSTED))
	    {
	      Move_And_Post_Item( menu, item );
	      _nc_Show_Menu(menu);
	    }
	}
    }
  else
    _nc_Default_Item.opt = opts;
  
  RETURN(E_OK);
}

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu  
|   Function      :  int item_opts_off(ITEM *item, Item_Options opts)   
|   
|   Description   :  Switch of the options for this item.
|
|   Return Values :  E_OK            - success
|                    E_BAD_ARGUMENT  - invalid options
+--------------------------------------------------------------------------*/
NCURSES_EXPORT(int)
item_opts_off (ITEM *item, Item_Options  opts)
{ 
  ITEM *citem = item; /* use a copy because set_item_opts must detect
                         NULL item itself to adjust its behavior */

  if (opts & ~ALL_ITEM_OPTS)
    RETURN(E_BAD_ARGUMENT);
  else
    {
      Normalize_Item(citem);    
      opts = citem->opt & ~(opts & ALL_ITEM_OPTS);
      return set_item_opts( item, opts );
    }
}

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu  
|   Function      :  int item_opts_on(ITEM *item, Item_Options opts)   
|   
|   Description   :  Switch on the options for this item.
|
|   Return Values :  E_OK            - success
|                    E_BAD_ARGUMENT  - invalid options
+--------------------------------------------------------------------------*/
NCURSES_EXPORT(int)
item_opts_on (ITEM *item, Item_Options opts)
{
  ITEM *citem = item; /* use a copy because set_item_opts must detect
                         NULL item itself to adjust its behavior */
  
  opts &= ALL_ITEM_OPTS;
  if (opts & ~ALL_ITEM_OPTS)
    RETURN(E_BAD_ARGUMENT);
  else
    {
      Normalize_Item(citem);
      opts = citem->opt | opts;
      return set_item_opts( item, opts );
    }
}

/*---------------------------------------------------------------------------
|   Facility      :  libnmenu  
|   Function      :  Item_Options item_opts(const ITEM *item)   
|   
|   Description   :  Switch of the options for this item.
|
|   Return Values :  Items options
+--------------------------------------------------------------------------*/
NCURSES_EXPORT(Item_Options)
item_opts (const ITEM * item)
{
  return (ALL_ITEM_OPTS & Normalize_Item(item)->opt);
}

/* m_item_opt.c ends here */
