workbench/libs/muimaster/mui_freeclass.c

   1 /*
   2     Copyright © 2002-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <string.h>
   7
   8 #include <proto/muimaster.h>
   9 #include <proto/intuition.h>
  10 #include <proto/exec.h>
  11
  12 #include "muimaster_intern.h"
  13 #include "support_classes.h"
  14 #include "debug.h"
  15
  16 /*****************************************************************************
  17
  18     NAME */
  19         AROS_LH1(VOID, MUI_FreeClass,
  20
  21 /*  SYNOPSIS */
  22         AROS_LHA(Class *, cl, A0),
  23
  24 /*  LOCATION */
  25         struct Library *, MUIMasterBase, 14, MUIMaster)
  26
  27 /*  FUNCTION
  28         Frees a class returned by MUI_GetClass(). This function is
  29         obsolete. Use MUI_DeleteCustomClass() instead.
  30
  31     INPUTS
  32         cl - The pointer to the class.
  33
  34     RESULT
  35
  36     NOTES
  37
  38     EXAMPLE
  39
  40     BUGS
  41
  42     SEE ALSO
  43         MUI_GetClass(), MUI_CreateCustomClass(), MUI_DeleteCustomClass()
  44
  45     INTERNALS
  46
  47 *****************************************************************************/
  48 {
  49     AROS_LIBFUNC_INIT
  50
  51     ObtainSemaphore(&MUIMB(MUIMasterBase)->ZuneSemaphore);
  52
  53     /* CLF_INLIST tells us that this class is a builtin class */
  54     if (cl->cl_Flags & CLF_INLIST)
  55     {
  56         Class *super = cl->cl_Super;
  57         char *count = (char *)cl->cl_Dispatcher.h_Data;
  58
  59         if (--count == 0)
  60         {
  61               ZUNE_RemoveBuiltinClass(cl, MUIMasterBase);
  62
  63             if (FreeClass(cl))
  64             {
  65                 CloseLibrary(MUIMasterBase);
  66                 if (strcmp(super->cl_ID, ROOTCLASS) != 0)
  67                     MUI_FreeClass(super);
  68             }
  69             else
  70             {
  71                 /* Re-add the class to the list since freeing it failed */
  72                 ZUNE_AddBuiltinClass(cl, MUIMasterBase);
  73
  74                 /* And also increase the reference counter again */
  75                 count++;
  76             }
  77         }
  78         cl->cl_Dispatcher.h_Data = count;
  79
  80         ReleaseSemaphore(&MUIMB(MUIMasterBase)->ZuneSemaphore);
  81     }
  82     else
  83     {
  84         ReleaseSemaphore(&MUIMB(MUIMasterBase)->ZuneSemaphore);
  85
  86         CloseLibrary((struct Library *)cl->cl_Dispatcher.h_Data);
  87     }
  88
  89     AROS_LIBFUNC_EXIT
  90
  91 } /* MUIA_FreeClass */