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