prj/cam/src/object/propnull.h

   1 /*
   2 @Copyright Looking Glass Studios, Inc.
   3 1996,1997,1998,1999,2000 Unpublished Work.
   4 */
   5
   6 // $Header: r:/t2repos/thief2/src/object/propnull.h,v 1.9 2000/01/29 13:24:42 adurant Exp $
   7 #pragma once
   8
   9 #ifndef PROPNULL_H
  10 #define PROPNULL_H
  11 #include <property.h>
  12
  13 ////////////////////////////////////////////////////////////
  14 // NULL PROPERTY
  15 //
  16 // This is the IProperty implementation for PROPID_NULL.
  17 // it essentially does nothing.  The Property manager
  18 // returns it for all undefined properties.
  19 //
  20
  21 class cNullProperty : public IProperty
  22 {
  23 public:
  24    DECLARE_UNAGGREGATABLE();
  25
  26    cNullProperty() {} ;
  27    STDMETHOD_(const sPropertyDesc*, Describe) () const;
  28    STDMETHOD_(PropertyID,GetID)() const;
  29    STDMETHOD_(const sPropertyTypeDesc*, DescribeType) () const;
  30    STDMETHOD(Create) (ObjID obj);
  31    STDMETHOD(Copy) (ObjID obj,ObjID example);
  32    STDMETHOD(Delete) (ObjID obj);
  33    STDMETHOD_(void,Notify) (ePropertyNotifyMsg msg, PropNotifyData data);
  34    STDMETHOD_(BOOL,IsRelevant)(ObjID obj) const;
  35    STDMETHOD_(BOOL,IsSimplyRelevant)(ObjID obj) const;
  36    STDMETHOD_(BOOL,Touch) (ObjID obj);
  37    STDMETHOD_(PropListenerHandle, Listen)(PropertyListenMsgSet interests, PropertyListenFunc func, PropListenerData data);
  38    STDMETHOD(Unlisten)(PropListenerHandle ) { return S_OK; };
  39
  40    STDMETHOD_(void, IterStart) (sPropertyObjIter* iter) const;
  41    STDMETHOD_(BOOL, IterNext)  (sPropertyObjIter* iter, ObjID* next) const;
  42    STDMETHOD_(void, IterStop) (sPropertyObjIter* iter) const;
  43 };
  44
  45
  46
  47 #endif // PROPNULL_H