rom/intuition/onmenu.c

   1 /*
   2     Copyright © 1995-2013, The AROS Development Team. All rights reserved.
   3     Copyright © 2001-2003, The MorphOS Development Team. All Rights Reserved.
   4     $Id$
   5 */
   6
   7 #include "intuition_intern.h"
   8
   9 /*****************************************************************************
  10
  11     NAME */
  12 #include <intuition/intuition.h>
  13
  14         AROS_LH2(void, OnMenu,
  15
  16 /*  SYNOPSIS */
  17         AROS_LHA(struct Window    *, window, A0),
  18         AROS_LHA(UWORD             , menunumber, D0),
  19
  20 /*  LOCATION */
  21         struct IntuitionBase *, IntuitionBase, 32, Intuition)
  22
  23 /*  FUNCTION
  24         Enable a whole menu, an item or a sub-item depending on
  25         the menunumber.
  26
  27     INPUTS
  28         window - The window, the menu belongs to
  29         menunumber - The packed information on what piece of menu to enable
  30
  31     RESULT
  32         None.
  33
  34     NOTES
  35
  36     EXAMPLE
  37
  38     BUGS
  39
  40     SEE ALSO
  41         OffMenu(), ResetMenuStrip()
  42
  43     INTERNALS
  44
  45 *****************************************************************************/
  46 {
  47     AROS_LIBFUNC_INIT
  48
  49     int i;
  50     struct Menu * thismenu;
  51     struct MenuItem * thisitem;
  52
  53     DEBUG_ONMENU(dprintf("OnMenu: Window 0x%lx MenuNumber 0x%lx\n", window, menunumber));
  54
  55     SANITY_CHECK(window)
  56
  57     IntuitionBase = IntuitionBase;  /* shut up the compiler */
  58
  59     thismenu = window->MenuStrip;
  60
  61     if (MENUNUM(menunumber) != NOMENU)
  62     {
  63         for (i = 0; i < MENUNUM(menunumber) && thismenu; i++)
  64         {
  65             thismenu = thismenu->NextMenu;
  66         }
  67
  68         if (thismenu)
  69         {
  70             if (ITEMNUM(menunumber) == NOITEM)
  71             {
  72                 thismenu->Flags |= MENUENABLED;
  73             }
  74             else
  75             {
  76                 thisitem = thismenu->FirstItem;
  77
  78                 for (i = 0; i < ITEMNUM(menunumber) && thisitem; i++)
  79                 {
  80                     thisitem = thisitem->NextItem;
  81                 }
  82
  83                 if (thisitem)
  84                 {
  85                     if (SUBNUM(menunumber) != NOSUB && thisitem->SubItem)
  86                     {
  87                         thisitem = thisitem->SubItem;
  88
  89                         for (i = 0; i < SUBNUM(menunumber) && thisitem; i++)
  90                         {
  91                             thisitem = thisitem->NextItem;
  92                         }
  93                     }
  94                 }
  95
  96                 if (thisitem)
  97                 {
  98                     thisitem->Flags |= ITEMENABLED;
  99                 }
 100             }
 101
 102         } /* if (thismenu) */
 103
 104     } /* if (MENUNUM(menunumber) != NOMENU) */
 105
 106     AROS_LIBFUNC_EXIT
 107 } /* OnMenu */