include/wx/cocoa/ObjcAssociate.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/cocoa/ObjcAssociate.h
   3 // Purpose:     Associates an Objective-C class with a C++ class
   4 // Author:      David Elliott
   5 // Modified by:
   6 // Created:     2002/12/03
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2002 David Elliott <dfe@cox.net>
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef __WX_COCOA_OBJC_ASSOCIATE_H__
  13 #define __WX_COCOA_OBJC_ASSOCIATE_H__
  14
  15 /*-------------------------------------------------------------------------
  16 Basic hashmap stuff, used by everything
  17 -------------------------------------------------------------------------*/
  18 #define WX_DECLARE_OBJC_HASHMAP(ObjcClass) \
  19 class wxCocoa##ObjcClass; \
  20 WX_DECLARE_HASH_MAP(WX_##ObjcClass,wxCocoa##ObjcClass*,wxPointerHash,wxPointerEqual,wxCocoa##ObjcClass##Hash)
  21
  22 #define WX_DECLARE_OBJC_INTERFACE_HASHMAP(ObjcClass) \
  23 public: \
  24     static inline wxCocoa##ObjcClass* GetFromCocoa(WX_##ObjcClass cocoaObjcClass) \
  25     { \
  26         wxCocoa##ObjcClass##Hash::iterator iter = sm_cocoaHash.find(cocoaObjcClass); \
  27         if(iter!=sm_cocoaHash.end()) \
  28         { \
  29             return iter->second; \
  30         } \
  31         return NULL; \
  32     } \
  33 protected: \
  34     static wxCocoa##ObjcClass##Hash sm_cocoaHash;
  35
  36 #define WX_IMPLEMENT_OBJC_INTERFACE_HASHMAP(ObjcClass) \
  37 wxCocoa##ObjcClass##Hash wxCocoa##ObjcClass::sm_cocoaHash;
  38
  39
  40 /*-------------------------------------------------------------------------
  41 The entire interface, including some boilerplate stuff
  42 -------------------------------------------------------------------------*/
  43 #define WX_DECLARE_OBJC_INTERFACE(ObjcClass) \
  44 WX_DECLARE_OBJC_INTERFACE_HASHMAP(ObjcClass) \
  45 public: \
  46     inline void Associate##ObjcClass(WX_##ObjcClass cocoaObjcClass) \
  47     { \
  48         if(cocoaObjcClass) \
  49             sm_cocoaHash.insert(wxCocoa##ObjcClass##Hash::value_type(cocoaObjcClass,this)); \
  50     } \
  51     inline void Disassociate##ObjcClass(WX_##ObjcClass cocoaObjcClass) \
  52     { \
  53         if(cocoaObjcClass) \
  54             sm_cocoaHash.erase(cocoaObjcClass); \
  55     }
  56
  57 #define WX_IMPLEMENT_OBJC_INTERFACE(ObjcClass) \
  58 WX_IMPLEMENT_OBJC_INTERFACE_HASHMAP(ObjcClass)
  59
  60 /*-------------------------------------------------------------------------
  61 Stuff to be used by the wxWidgets class (not the Cocoa interface)
  62 -------------------------------------------------------------------------*/
  63 #define WX_DECLARE_COCOA_OWNER(ObjcClass,ObjcBase,ObjcRoot) \
  64 public: \
  65     inline WX_##ObjcClass Get##ObjcClass() { return (WX_##ObjcClass)m_cocoa##ObjcRoot; } \
  66     inline const WX_##ObjcClass Get##ObjcClass() const { return (WX_##ObjcClass)m_cocoa##ObjcRoot; } \
  67 protected: \
  68     void Set##ObjcClass(WX_##ObjcClass cocoaObjcClass);
  69
  70 #define WX_IMPLEMENT_COCOA_OWNER(wxClass,ObjcClass,ObjcBase,ObjcRoot) \
  71 void wxClass::Set##ObjcClass(WX_##ObjcClass cocoaObjcClass) \
  72 { \
  73     Disassociate##ObjcClass((WX_##ObjcClass)m_cocoa##ObjcRoot); \
  74     Set##ObjcBase(cocoaObjcClass); \
  75     Associate##ObjcClass((WX_##ObjcClass)m_cocoa##ObjcRoot); \
  76 }
  77
  78 #endif // __WX_COCOA_OBJC_ASSOCIATE_H__