payloads/libpayload/curses/menu/m_item_opt.c

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  28
  29 /****************************************************************************
  30  *   Author:  Juergen Pfeifer, 1995,1997                                    *
  31  ****************************************************************************/
  32
  33 /***************************************************************************
  34 * Module m_item_opt                                                        *
  35 * Menus item option routines                                               *
  36 ***************************************************************************/
  37
  38 #include "menu.priv.h"
  39
  40 MODULE_ID("$Id: m_item_opt.c,v 1.18 2010/01/23 21:20:10 tom Exp $")
  41
  42 /*---------------------------------------------------------------------------
  43 |   Facility      :  libnmenu
  44 |   Function      :  int set_item_opts(ITEM *item, Item_Options opts)
  45 |
  46 |   Description   :  Set the options of the item. If there are relevant
  47 |                    changes, the item is connected and the menu is posted,
  48 |                    the menu will be redisplayed.
  49 |
  50 |   Return Values :  E_OK            - success
  51 |                    E_BAD_ARGUMENT  - invalid item options
  52 +--------------------------------------------------------------------------*/
  53 NCURSES_EXPORT(int)
  54 set_item_opts(ITEM * item, Item_Options opts)
  55 {
  56   T((T_CALLED("set_menu_opts(%p,%d)"), (void *)item, opts));
  57
  58   opts &= ALL_ITEM_OPTS;
  59
  60   if (opts & ~ALL_ITEM_OPTS)
  61     RETURN(E_BAD_ARGUMENT);
  62
  63   if (item)
  64     {
  65       if (item->opt != opts)
  66         {
  67           MENU *menu = item->imenu;
  68
  69           item->opt = opts;
  70
  71           if ((!(opts & O_SELECTABLE)) && item->value)
  72             item->value = FALSE;
  73
  74           if (menu && (menu->status & _POSTED))
  75             {
  76               Move_And_Post_Item(menu, item);
  77               _nc_Show_Menu(menu);
  78             }
  79         }
  80     }
  81   else
  82     _nc_Default_Item.opt = opts;
  83
  84   RETURN(E_OK);
  85 }
  86
  87 /*---------------------------------------------------------------------------
  88 |   Facility      :  libnmenu
  89 |   Function      :  int item_opts_off(ITEM *item, Item_Options opts)
  90 |
  91 |   Description   :  Switch of the options for this item.
  92 |
  93 |   Return Values :  E_OK            - success
  94 |                    E_BAD_ARGUMENT  - invalid options
  95 +--------------------------------------------------------------------------*/
  96 NCURSES_EXPORT(int)
  97 item_opts_off(ITEM * item, Item_Options opts)
  98 {
  99   ITEM *citem = item;           /* use a copy because set_item_opts must detect
 100
 101                                    NULL item itself to adjust its behavior */
 102
 103   T((T_CALLED("item_opts_off(%p,%d)"), (void *)item, opts));
 104
 105   if (opts & ~ALL_ITEM_OPTS)
 106     RETURN(E_BAD_ARGUMENT);
 107   else
 108     {
 109       Normalize_Item(citem);
 110       opts = citem->opt & ~(opts & ALL_ITEM_OPTS);
 111       returnCode(set_item_opts(item, opts));
 112     }
 113 }
 114
 115 /*---------------------------------------------------------------------------
 116 |   Facility      :  libnmenu
 117 |   Function      :  int item_opts_on(ITEM *item, Item_Options opts)
 118 |
 119 |   Description   :  Switch on the options for this item.
 120 |
 121 |   Return Values :  E_OK            - success
 122 |                    E_BAD_ARGUMENT  - invalid options
 123 +--------------------------------------------------------------------------*/
 124 NCURSES_EXPORT(int)
 125 item_opts_on(ITEM * item, Item_Options opts)
 126 {
 127   ITEM *citem = item;           /* use a copy because set_item_opts must detect
 128
 129                                    NULL item itself to adjust its behavior */
 130
 131   T((T_CALLED("item_opts_on(%p,%d)"), (void *)item, opts));
 132
 133   opts &= ALL_ITEM_OPTS;
 134   if (opts & ~ALL_ITEM_OPTS)
 135     RETURN(E_BAD_ARGUMENT);
 136   else
 137     {
 138       Normalize_Item(citem);
 139       opts = citem->opt | opts;
 140       returnCode(set_item_opts(item, opts));
 141     }
 142 }
 143
 144 /*---------------------------------------------------------------------------
 145 |   Facility      :  libnmenu
 146 |   Function      :  Item_Options item_opts(const ITEM *item)
 147 |
 148 |   Description   :  Switch of the options for this item.
 149 |
 150 |   Return Values :  Items options
 151 +--------------------------------------------------------------------------*/
 152 NCURSES_EXPORT(Item_Options)
 153 item_opts(const ITEM * item)
 154 {
 155   T((T_CALLED("item_opts(%p)"), (const void *)item));
 156   returnItemOpts(ALL_ITEM_OPTS & Normalize_Item(item)->opt);
 157 }
 158
 159 /* m_item_opt.c ends here */