workbench/libs/desktop/observer.h

   1 /*
   2    Copyright © 1995-2002, The AROS Development Team. All rights reserved.
   3    $Id$
   4  */
   5
   6 #ifndef OBSERVER_H
   7 #    define OBSERVER_H
   8
   9 #    define OA_Base                   TAG_USER+4200
  10
  11 #    define OA_InTree                 OA_Base+1
  12 #    define OA_Presentation           OA_Base+2
  13 #    define OA_Parent                 OA_Base+3
  14 #    define OA_Disused                OA_Base+4
  15
  16 #    define OM_FreeList_Add           OA_Base+5
  17 #    define OM_Delete                 OA_Base+6
  18
  19 struct FreeNode
  20 {
  21     struct MinNode  f_Node;
  22     APTR            f_mem;
  23 };
  24
  25 struct ObserverClassData
  26 {
  27     Object         *presentation;
  28     Object         *parent;
  29     struct MinList  freeList;
  30     BOOL            inTree;
  31 };
  32
  33 struct __dummyObserverData__
  34 {
  35     struct MUI_NotifyData mnd;
  36     struct ObserverClassData ocd;
  37 };
  38
  39 struct ObsFreeListAddMsg
  40 {
  41     Msg             methodID;
  42     APTR            free;
  43 };
  44
  45 struct ObsDeleteMsg
  46 {
  47     Msg             methodID;
  48     Object         *obj;
  49 };
  50
  51 #    define observerData(obj) (&(((struct __dummyObserverData__ *)(obj))->ocd))
  52
  53 #    define _presentation(obj)    (observerData(obj)->presentation)
  54 #    define _o_parent(obj)    (observerData(obj)->parent)
  55
  56
  57 #endif