xref: /freebsd/contrib/ncurses/menu/m_item_val.c (revision 06bfebdedb0d353f1771adb65731f64461d9bd01)
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30e3d5408SPeter Wemm  *                                                                          *
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110e3d5408SPeter Wemm  *                                                                          *
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140e3d5408SPeter Wemm  *                                                                          *
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220e3d5408SPeter Wemm  *                                                                          *
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280e3d5408SPeter Wemm 
290e3d5408SPeter Wemm /****************************************************************************
304a1a9510SRong-En Fan  *   Author:  Juergen Pfeifer, 1995,1997                                    *
310e3d5408SPeter Wemm  ****************************************************************************/
320e3d5408SPeter Wemm 
330e3d5408SPeter Wemm /***************************************************************************
340e3d5408SPeter Wemm * Module m_item_val                                                        *
350e3d5408SPeter Wemm * Set and get menus item values                                            *
360e3d5408SPeter Wemm ***************************************************************************/
370e3d5408SPeter Wemm 
380e3d5408SPeter Wemm #include "menu.priv.h"
390e3d5408SPeter Wemm 
40*06bfebdeSXin LI MODULE_ID("$Id: m_item_val.c,v 1.15 2010/01/23 21:20:10 tom Exp $")
410e3d5408SPeter Wemm 
420e3d5408SPeter Wemm /*---------------------------------------------------------------------------
430e3d5408SPeter Wemm |   Facility      :  libnmenu
440e3d5408SPeter Wemm |   Function      :  int set_item_value(ITEM *item, int value)
450e3d5408SPeter Wemm |
464a1a9510SRong-En Fan |   Description   :  Programmatically set the item's selection value. This is
470e3d5408SPeter Wemm |                    only allowed if the item is selectable at all and if
480e3d5408SPeter Wemm |                    it is not connected to a single-valued menu.
490e3d5408SPeter Wemm |                    If the item is connected to a posted menu, the menu
500e3d5408SPeter Wemm |                    will be redisplayed.
510e3d5408SPeter Wemm |
520e3d5408SPeter Wemm |   Return Values :  E_OK              - success
530e3d5408SPeter Wemm |                    E_REQUEST_DENIED  - not selectable or single valued menu
540e3d5408SPeter Wemm +--------------------------------------------------------------------------*/
557a69bbfbSPeter Wemm NCURSES_EXPORT(int)
567a69bbfbSPeter Wemm set_item_value(ITEM * item, bool value)
570e3d5408SPeter Wemm {
580e3d5408SPeter Wemm   MENU *menu;
590e3d5408SPeter Wemm 
60*06bfebdeSXin LI   T((T_CALLED("set_item_value(%p,%d)"), (void *)item, value));
610e3d5408SPeter Wemm   if (item)
620e3d5408SPeter Wemm     {
630e3d5408SPeter Wemm       menu = item->imenu;
640e3d5408SPeter Wemm 
650e3d5408SPeter Wemm       if ((!(item->opt & O_SELECTABLE)) ||
660e3d5408SPeter Wemm 	  (menu && (menu->opt & O_ONEVALUE)))
670e3d5408SPeter Wemm 	RETURN(E_REQUEST_DENIED);
680e3d5408SPeter Wemm 
690e3d5408SPeter Wemm       if (item->value ^ value)
700e3d5408SPeter Wemm 	{
710e3d5408SPeter Wemm 	  item->value = value ? TRUE : FALSE;
720e3d5408SPeter Wemm 	  if (menu)
730e3d5408SPeter Wemm 	    {
740e3d5408SPeter Wemm 	      if (menu->status & _POSTED)
750e3d5408SPeter Wemm 		{
760e3d5408SPeter Wemm 		  Move_And_Post_Item(menu, item);
770e3d5408SPeter Wemm 		  _nc_Show_Menu(menu);
780e3d5408SPeter Wemm 		}
790e3d5408SPeter Wemm 	    }
800e3d5408SPeter Wemm 	}
810e3d5408SPeter Wemm     }
820e3d5408SPeter Wemm   else
830e3d5408SPeter Wemm     _nc_Default_Item.value = value;
840e3d5408SPeter Wemm 
850e3d5408SPeter Wemm   RETURN(E_OK);
860e3d5408SPeter Wemm }
870e3d5408SPeter Wemm 
880e3d5408SPeter Wemm /*---------------------------------------------------------------------------
890e3d5408SPeter Wemm |   Facility      :  libnmenu
900e3d5408SPeter Wemm |   Function      :  bool item_value(const ITEM *item)
910e3d5408SPeter Wemm |
920e3d5408SPeter Wemm |   Description   :  Return the selection value of the item
930e3d5408SPeter Wemm |
940e3d5408SPeter Wemm |   Return Values :  TRUE   - if item is selected
950e3d5408SPeter Wemm |                    FALSE  - if item is not selected
960e3d5408SPeter Wemm +--------------------------------------------------------------------------*/
977a69bbfbSPeter Wemm NCURSES_EXPORT(bool)
987a69bbfbSPeter Wemm item_value(const ITEM * item)
990e3d5408SPeter Wemm {
100*06bfebdeSXin LI   T((T_CALLED("item_value(%p)"), (const void *)item));
1014a1a9510SRong-En Fan   returnBool((Normalize_Item(item)->value) ? TRUE : FALSE);
1020e3d5408SPeter Wemm }
1030e3d5408SPeter Wemm 
1040e3d5408SPeter Wemm /* m_item_val.c ends here */
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