payloads/libpayload/curses/menu/m_item_cur.c

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  28
  29 /****************************************************************************
  30  *   Author:  Juergen Pfeifer, 1995,1997                                    *
  31  ****************************************************************************/
  32
  33 /***************************************************************************
  34 * Module m_item_cur                                                        *
  35 * Set and get current menus item                                           *
  36 ***************************************************************************/
  37
  38 #include "menu.priv.h"
  39
  40 MODULE_ID("$Id: m_item_cur.c,v 1.18 2010/01/23 21:20:10 tom Exp $")
  41
  42 /*---------------------------------------------------------------------------
  43 |   Facility      :  libnmenu
  44 |   Function      :  int set_current_item(MENU *menu, const ITEM *item)
  45 |
  46 |   Description   :  Make the item the current item
  47 |
  48 |   Return Values :  E_OK                - success
  49 +--------------------------------------------------------------------------*/
  50 NCURSES_EXPORT(int)
  51 set_current_item(MENU * menu, ITEM * item)
  52 {
  53   T((T_CALLED("set_current_item(%p,%p)"), (void *)menu, (void *)item));
  54
  55   if (menu && item && (item->imenu == menu))
  56     {
  57       if (menu->status & _IN_DRIVER)
  58         RETURN(E_BAD_STATE);
  59
  60       assert(menu->curitem);
  61       if (item != menu->curitem)
  62         {
  63           if (menu->status & _LINK_NEEDED)
  64             {
  65               /*
  66                * Items are available, but they are not linked together.
  67                * So we have to link here.
  68                */
  69               _nc_Link_Items(menu);
  70             }
  71           assert(menu->pattern);
  72           Reset_Pattern(menu);
  73           /* adjust the window to make item visible and update the menu */
  74           Adjust_Current_Item(menu, menu->toprow, item);
  75         }
  76     }
  77   else
  78     RETURN(E_BAD_ARGUMENT);
  79
  80   RETURN(E_OK);
  81 }
  82
  83 /*---------------------------------------------------------------------------
  84 |   Facility      :  libnmenu
  85 |   Function      :  ITEM *current_item(const MENU *menu)
  86 |
  87 |   Description   :  Return the menus current item
  88 |
  89 |   Return Values :  Item pointer or NULL if failure
  90 +--------------------------------------------------------------------------*/
  91 NCURSES_EXPORT(ITEM *)
  92 current_item(const MENU * menu)
  93 {
  94   T((T_CALLED("current_item(%p)"), (const void *)menu));
  95   returnItem((menu && menu->items) ? menu->curitem : (ITEM *) 0);
  96 }
  97
  98 /*---------------------------------------------------------------------------
  99 |   Facility      :  libnmenu
 100 |   Function      :  int item_index(const ITEM *)
 101 |
 102 |   Description   :  Return the logical index of this item.
 103 |
 104 |   Return Values :  The index or ERR if this is an invalid item pointer
 105 +--------------------------------------------------------------------------*/
 106 NCURSES_EXPORT(int)
 107 item_index(const ITEM * item)
 108 {
 109   T((T_CALLED("item_index(%p)"), (const void *)item));
 110   returnCode((item && item->imenu) ? item->index : ERR);
 111 }
 112
 113 /* m_item_cur.c ends here */