X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8cb50e4b4677abb67ffe9026780861c1b12a0463..2dde25b981e85696eafaf101ce57f40bab2bb91e:/include/wx/object.h?ds=inline diff --git a/include/wx/object.h b/include/wx/object.h index 319022cdfe..dc7a6a729e 100644 --- a/include/wx/object.h +++ b/include/wx/object.h @@ -1,12 +1,13 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: object.h +// Name: wx/object.h // Purpose: wxObject class, plus run-time type information macros // Author: Julian Smart -// Modified by: +// Modified by: Ron Lee // Created: 01/02/97 // RCS-ID: $Id$ -// Copyright: (c) Julian Smart and Markus Holzem -// Licence: wxWindows licence +// Copyright: (c) 1997 Julian Smart and Markus Holzem +// (c) 2001 Ron Lee +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_OBJECTH__ @@ -16,129 +17,256 @@ #pragma interface "object.h" #endif +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- + #include "wx/defs.h" #include "wx/memory.h" class WXDLLEXPORT wxObject; -#if USE_DYNAMIC_CLASSES +#if wxUSE_DYNAMIC_CLASSES + +// ---------------------------------------------------------------------------- +// conditional compilation +// ---------------------------------------------------------------------------- -#ifdef __GNUWIN32__ +// this shouldn't be needed any longer as does it but it +// doesn't hurt neither #ifdef GetClassName #undef GetClassName #endif +#ifdef GetClassInfo +#undef GetClassInfo #endif class WXDLLEXPORT wxClassInfo; -class WXDLLIMPORT ostream; -class WXDLLEXPORT wxInputStream; -class WXDLLEXPORT wxObjectInputStream; -class WXDLLEXPORT wxObjectOutputStream; class WXDLLEXPORT wxHashTable; -class WXDLLEXPORT wxObject_Serialize; +class WXDLLEXPORT wxObjectRefData; + +#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) + #include "wx/ioswrap.h" +#endif -/* - * Dynamic object system declarations - */ -typedef wxObject * (*wxObjectConstructorFn) (void); +// ---------------------------------------------------------------------------- +// wxClassInfo +// ---------------------------------------------------------------------------- + +typedef wxObject *(*wxObjectConstructorFn)(void); class WXDLLEXPORT wxClassInfo { - public: - wxClassInfo(char *cName, char *baseName1, char *baseName2, int sz, wxObjectConstructorFn fn); - - wxObject *CreateObject(void); - - inline char *GetClassName(void) const { return m_className; } - inline char *GetBaseClassName1(void) const { return m_baseClassName1; } - inline char *GetBaseClassName2(void) const { return m_baseClassName2; } - inline wxClassInfo* GetBaseClass1() const { return m_baseInfo1; } - inline wxClassInfo* GetBaseClass2() const { return m_baseInfo2; } - inline int GetSize(void) const { return m_objectSize; } - inline wxObjectConstructorFn GetConstructor() const { return m_objectConstructor; } - inline wxClassInfo* GetFirst() const { return sm_first; } - inline wxClassInfo* GetNext() const { return m_next; } - bool IsKindOf(wxClassInfo *info) const; - - static wxClassInfo *FindClass(char *c); - - // Initializes parent pointers and hash table for fast searching. - static void InitializeClasses(void); - - // Cleans up hash table used for fast searching. - static void CleanUpClasses(void); +public: + wxClassInfo( const wxChar *className, + const wxChar *baseName1, + const wxChar *baseName2, + int size, + wxObjectConstructorFn ctor ) + : m_className(className) + , m_baseClassName1(baseName1) + , m_baseClassName2(baseName2) + , m_objectSize(size) + , m_objectConstructor(ctor) + , m_baseInfo1(0) + , m_baseInfo2(0) + , m_next(sm_first) + { sm_first = this; } + + wxObject *CreateObject() { return m_objectConstructor ? (*m_objectConstructor)() : 0; } + + const wxChar *GetClassName() const { return m_className; } + const wxChar *GetBaseClassName1() const { return m_baseClassName1; } + const wxChar *GetBaseClassName2() const { return m_baseClassName2; } + const wxClassInfo *GetBaseClass1() const { return m_baseInfo1; } + const wxClassInfo *GetBaseClass2() const { return m_baseInfo2; } + int GetSize() const { return m_objectSize; } + + wxObjectConstructorFn GetConstructor() const { return m_objectConstructor; } + static const wxClassInfo *GetFirst() { return sm_first; } + const wxClassInfo *GetNext() const { return m_next; } + static wxClassInfo *FindClass(const wxChar *className); + + // Climb upwards through inheritance hierarchy. + // Dual inheritance is catered for. + + bool IsKindOf(const wxClassInfo *info) const + { + return info != 0 && + ( info == this || + ( m_baseInfo1 && m_baseInfo1->IsKindOf(info) ) || + ( m_baseInfo2 && m_baseInfo2->IsKindOf(info) ) ); + } + + // Initializes parent pointers and hash table for fast searching. + + static void InitializeClasses(); + + // Cleans up hash table used for fast searching. + + static void CleanUpClasses(); public: - char* m_className; - char* m_baseClassName1; - char* m_baseClassName2; - int m_objectSize; - wxObjectConstructorFn m_objectConstructor; - - // Pointers to base wxClassInfos: set in InitializeClasses - // called from wx_main.cc - wxClassInfo* m_baseInfo1; - wxClassInfo* m_baseInfo2; - - static wxClassInfo* sm_first; - wxClassInfo* m_next; - - static wxHashTable* sm_classTable; + const wxChar *m_className; + const wxChar *m_baseClassName1; + const wxChar *m_baseClassName2; + int m_objectSize; + wxObjectConstructorFn m_objectConstructor; + + // Pointers to base wxClassInfos: set in InitializeClasses + + const wxClassInfo *m_baseInfo1; + const wxClassInfo *m_baseInfo2; + + // class info object live in a linked list: + // pointers to its head and the next element in it + + static wxClassInfo *sm_first; + wxClassInfo *m_next; + + // FIXME: this should be private (currently used directly by way too + // many clients) + static wxHashTable *sm_classTable; + +private: + // InitializeClasses() helper + static wxClassInfo *GetBaseByName(const wxChar *name); + + DECLARE_NO_COPY_CLASS(wxClassInfo) }; -wxObject* WXDLLEXPORT wxCreateDynamicObject(const char *name); +WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name); -#ifdef USE_SERIAL -wxObject* WXDLLEXPORT wxCreateStoredObject( wxInputStream& stream ); -#endif +// ---------------------------------------------------------------------------- +// Dynamic class macros +// ---------------------------------------------------------------------------- -#define DECLARE_DYNAMIC_CLASS(name) \ - public:\ - static wxClassInfo sm_class##name;\ - wxClassInfo *GetClassInfo() const \ +#define DECLARE_DYNAMIC_CLASS(name) \ + public: \ + static wxClassInfo sm_class##name; \ + virtual wxClassInfo *GetClassInfo() const \ { return &name::sm_class##name; } #define DECLARE_ABSTRACT_CLASS(name) DECLARE_DYNAMIC_CLASS(name) #define DECLARE_CLASS(name) DECLARE_DYNAMIC_CLASS(name) -////// -////// for concrete classes -////// +// ----------------------------------- +// for concrete classes +// ----------------------------------- -// Single inheritance with one base class -#define IMPLEMENT_DYNAMIC_CLASS(name, basename) \ -wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name(void) \ - { return new name; }\ - wxClassInfo name::sm_class##name((char *) #name, (char *) #basename, (char *) NULL, (int) sizeof(name), (wxObjectConstructorFn) wxConstructorFor##name); + // Single inheritance with one base class -// Multiple inheritance with two base classes -#define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) \ -wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name(void) \ - { return new name; }\ - wxClassInfo name::sm_class##name((char *) #name, (char *) #basename1, (char *) #basename2, (int) sizeof(name), (wxObjectConstructorFn) wxConstructorFor##name); +#define IMPLEMENT_DYNAMIC_CLASS(name, basename) \ + wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name() \ + { return new name; } \ + wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename), \ + 0, (int) sizeof(name), \ + (wxObjectConstructorFn) wxConstructorFor##name); -////// -////// for abstract classes -////// + // Multiple inheritance with two base classes -// Single inheritance with one base class -#define IMPLEMENT_ABSTRACT_CLASS(name, basename) \ - wxClassInfo name::sm_class##name((char *) #name, (char *) #basename, \ - (char *) NULL, (int) sizeof(name), (wxObjectConstructorFn) NULL); +#define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) \ + wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name() \ + { return new name; } \ + wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename1), \ + wxT(#basename2), (int) sizeof(name), \ + (wxObjectConstructorFn) wxConstructorFor##name); -// Multiple inheritance with two base classes -#define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) \ - wxClassInfo name::sm_class##name((char *) #name, (char *) #basename1, (char *) #basename2, (int) sizeof(name), (wxObjectConstructorFn) NULL); +// ----------------------------------- +// for abstract classes +// ----------------------------------- + + // Single inheritance with one base class + +#define IMPLEMENT_ABSTRACT_CLASS(name, basename) \ + wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename), \ + 0, (int) sizeof(name), (wxObjectConstructorFn) 0); + + // Multiple inheritance with two base classes + +#define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) \ + wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename1), \ + wxT(#basename2), (int) sizeof(name), \ + (wxObjectConstructorFn) 0); #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2 +// ----------------------------------- +// for pluggable classes +// ----------------------------------- + + // NOTE: this should probably be the very first statement + // in the class declaration so wxPluginSentinel is + // the first member initialised and the last destroyed. + +// _DECLARE_DL_SENTINEL(name) wxPluginSentinel m_pluginsentinel; + +#if wxUSE_NESTED_CLASSES + +#define _DECLARE_DL_SENTINEL(name, exportdecl) \ +class exportdecl name##PluginSentinel { \ +private: \ + static const wxString sm_className; \ +public: \ + name##PluginSentinel(); \ + ~name##PluginSentinel(); \ +}; \ +name##PluginSentinel m_pluginsentinel; + +#define _IMPLEMENT_DL_SENTINEL(name) \ + const wxString name::name##PluginSentinel::sm_className(#name); \ + name::name##PluginSentinel::name##PluginSentinel() { \ + wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name); \ + if( e != 0 ) { e->RefObj(); } \ + } \ + name::name##PluginSentinel::~name##PluginSentinel() { \ + wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name); \ + if( e != 0 ) { e->UnrefObj(); } \ + } +#else + +#define _DECLARE_DL_SENTINEL(name) +#define _IMPLEMENT_DL_SENTINEL(name) + +#endif // wxUSE_NESTED_CLASSES + +#define DECLARE_PLUGGABLE_CLASS(name) \ + DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLEXPORT) +#define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name) \ + DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLEXPORT) + +#define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo) \ + DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo) +#define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo) \ + DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo) + +#define IMPLEMENT_PLUGGABLE_CLASS(name, basename) \ + IMPLEMENT_DYNAMIC_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name) +#define IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2) \ + IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name) +#define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename) \ + IMPLEMENT_ABSTRACT_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name) +#define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2) \ + IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name) + +#define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename) \ + IMPLEMENT_PLUGGABLE_CLASS(name, basename) +#define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2) \ + IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2) +#define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename) \ + IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename) +#define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2) \ + IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2) + + #define CLASSINFO(name) (&name::sm_class##name) -#else +#else // !wxUSE_DYNAMIC_CLASSES + + // No dynamic class system: so stub out the macros -// No dynamic class system: so stub out the macros #define DECLARE_DYNAMIC_CLASS(name) #define DECLARE_ABSTRACT_CLASS(name) #define DECLARE_CLASS(name) @@ -149,97 +277,265 @@ wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name(void) \ #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2 -#endif +#define DECLARE_PLUGGABLE_CLASS(name) +#define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name) +#define IMPLEMENT_PLUGGABLE_CLASS(name, basename) +#define IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2) +#define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename) +#define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2) -#define IS_KIND_OF(obj, className) obj->IsKindOf(&className::sm_class##className) +#define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo) +#define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo) +#define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename) +#define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2) +#define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename) +#define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2) -// Unfortunately Borland seems to need this include. -#ifdef __BORLANDC__ -#if USE_IOSTREAMH -#include -#else -#include +#endif // wxUSE_DYNAMIC_CLASSES + + +#define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::sm_class##className) + +// Just seems a bit nicer-looking (pretend it's not a macro) +#define wxIsKindOf(obj, className) obj->IsKindOf(&className::sm_class##className) + +// to be replaced by dynamic_cast<> in the future +#define wxDynamicCast(obj, className) \ + (className *) wxCheckDynamicCast((wxObject*)(obj), &className::sm_class##className) + +// The 'this' pointer is always true, so use this version +// to cast the this pointer and avoid compiler warnings. +#define wxDynamicCastThis(className) \ + (IsKindOf(&className::sm_class##className) ? (className *)(this) : (className *)0) + +#define wxConstCast(obj, className) ((className *)(obj)) + + +#ifdef __WXDEBUG__ +inline void wxCheckCast(void *ptr) +{ + wxASSERT_MSG( ptr, _T("wxStaticCast() used incorrectly") ); +} +#define wxStaticCast(obj, className) \ + (wxCheckCast(wxDynamicCast(obj, className)), ((className *)(obj))) + +#else // !__WXDEBUG__ +#define wxStaticCast(obj, className) ((className *)(obj)) + +#endif // __WXDEBUG__ + + +// for some reason Borland seems to need this include. +#if wxUSE_STD_IOSTREAM \ + && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) \ + && defined(__BORLANDC__) + #if wxUSE_IOSTREAMH + #include + #else + #include + #endif +#endif // wxUSE_IOSTREAMH + +// ---------------------------------------------------------------------------- +// set up memory debugging macros +// ---------------------------------------------------------------------------- + +/* + Which new/delete operator variants do we want? + + _WX_WANT_NEW_SIZET_WXCHAR_INT = void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0) + _WX_WANT_DELETE_VOID = void operator delete (void * buf) + _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET = void operator delete (void *buf, const char *_fname, size_t _line) + _WX_WANT_DELETE_VOID_WXCHAR_INT = void operator delete(void *buf, wxChar*, int) + _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT = void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0) + _WX_WANT_ARRAY_DELETE_VOID = void operator delete[] (void *buf) + _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT = void operator delete[] (void* buf, wxChar*, int ) +*/ + +#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING + +// All compilers get this one +#define _WX_WANT_NEW_SIZET_WXCHAR_INT + +// Everyone except Visage gets the next one +#ifndef __VISAGECPP__ + #define _WX_WANT_DELETE_VOID #endif + +// Only visage gets this one under the correct circumstances +#if defined(__VISAGECPP__) && __DEBUG_ALLOC__ + #define _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET #endif -class WXDLLEXPORT wxObjectRefData; +// Only VC++ 6.0 and CodeWarrior compilers get overloaded delete that matches new +#if ( defined(__VISUALC__) && (__VISUALC__ >= 1200) ) || (defined(__MWERKS__) && (__MWERKS__ >= 0x2400)) + #define _WX_WANT_DELETE_VOID_WXCHAR_INT +#endif + +// Now see who (if anyone) gets the array memory operators +#if wxUSE_ARRAY_MEMORY_OPERATORS + + // Everyone except Visual C++ (cause problems for VC++ - crashes) + #if !defined(__VISUALC__) + #define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT + #endif + + // Everyone except Visual C++ (cause problems for VC++ - crashes) + #if !defined(__VISUALC__) + #define _WX_WANT_ARRAY_DELETE_VOID + #endif + + // Only CodeWarrior 6 or higher + #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400) + #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT + #endif + +#endif // wxUSE_ARRAY_MEMORY_OPERATORS + +#endif // WXDEBUG && wxUSE_MEMORY_TRACING + + +// ---------------------------------------------------------------------------- +// wxObject: the root class of wxWindows object hierarchy +// ---------------------------------------------------------------------------- class WXDLLEXPORT wxObject { - public: + DECLARE_ABSTRACT_CLASS(wxObject) - // This is equivalent to using the macro DECLARE_ABSTRACT_CLASS - static wxClassInfo sm_classwxObject; +private: + void InitFrom(const wxObject& other); + +public: + wxObject() { m_refData = NULL; } + virtual ~wxObject() { UnRef(); } + + wxObject(const wxObject& other) + { + InitFrom(other); + } + + wxObject& operator=(const wxObject& other) + { + if ( this != &other ) + { + UnRef(); + InitFrom(other); + } + return *this; + } + + bool IsKindOf(wxClassInfo *info) const; + + + // Turn on the correct set of new and delete operators + +#ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT + void *operator new ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 ); +#endif - wxObject(void); - virtual ~wxObject(void); +#ifdef _WX_WANT_DELETE_VOID + void operator delete ( void * buf ); +#endif - virtual wxClassInfo *GetClassInfo(void) const { return &sm_classwxObject; } +#ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET + void operator delete ( void *buf, const char *_fname, size_t _line ); +#endif - bool IsKindOf(wxClassInfo *info) const; +#ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT + void operator delete ( void *buf, const wxChar*, int ); +#endif -#if WXDEBUG && USE_MEMORY_TRACING - void * operator new (size_t size, char * fileName = NULL, int lineNum = 0); - void operator delete (void * buf); - - // Cause problems for VC++ -#ifndef _MSC_VER - void * operator new[] (size_t size, char * fileName = NULL, int lineNum = 0); - void operator delete[] (void * buf); +#ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT + void *operator new[] ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 ); #endif +#ifdef _WX_WANT_ARRAY_DELETE_VOID + void operator delete[] ( void *buf ); #endif -#if WXDEBUG || USE_DEBUG_CONTEXT - virtual void Dump(ostream& str); +#ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT + void operator delete[] (void* buf, const wxChar*, int ); #endif -#ifdef USE_SERIAL - virtual void StoreObject( wxObjectOutputStream &stream ); - virtual void LoadObject( wxObjectInputStream &stream ); + +#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) + virtual void Dump(wxSTD ostream& str); #endif - // make a 'clone' of the object - void Ref(const wxObject& clone); + // ref counted data handling methods + + // get/set + wxObjectRefData *GetRefData() const { return m_refData; } + void SetRefData(wxObjectRefData *data) { m_refData = data; } - // destroy a reference - void UnRef(void); + // make a 'clone' of the object + void Ref(const wxObject& clone); - inline wxObjectRefData *GetRefData(void) const { return m_refData; } - inline void SetRefData(wxObjectRefData *data) { m_refData = data; } + // destroy a reference + void UnRef(); protected: - wxObjectRefData* m_refData; -#ifdef USE_SERIAL - wxObject_Serialize* m_serialObj; -#endif -}; + // ensure that our data is not shared with anybody else: if we have no + // data, it is created using CreateRefData() below, if we have shared data + // it is copied using CloneRefData(), otherwise nothing is done + void AllocExclusive(); -/* - * wxObjectData - */ + // both methods must be implemented if Unshare() is used, not pure virtual + // only because of the backwards compatibility reasons + + // create a new m_refData + virtual wxObjectRefData *CreateRefData() const; + + // create a new m_refData initialized with the given one + virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const; + + wxObjectRefData *m_refData; +}; -class WXDLLEXPORT wxObjectRefData { +// ---------------------------------------------------------------------------- +// wxObjectRefData: ref counted data meant to be stored in wxObject +// ---------------------------------------------------------------------------- +class WXDLLEXPORT wxObjectRefData +{ friend class wxObject; public: - wxObjectRefData(void); - virtual ~wxObjectRefData(void); + wxObjectRefData() : m_count(1) { } + virtual ~wxObjectRefData() { } + + int GetRefCount() const { return m_count; } - inline int GetRefCount(void) const { return m_count; } private: int m_count; }; -#if WXDEBUG && USE_GLOBAL_MEMORY_OPERATORS -//#ifndef WXDEBUG_NEW -//#define WXDEBUG_NEW new(__FILE__,__LINE__) -//#endif -#define new new(__FILE__,__LINE__) + +inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo) +{ + return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : NULL; +} + +// ---------------------------------------------------------------------------- +// more debugging macros +// ---------------------------------------------------------------------------- + +#ifdef __WXDEBUG__ + #ifndef WXDEBUG_NEW + #define WXDEBUG_NEW new(__TFILE__,__LINE__) + #endif +#else // !__WXDEBUG__ + #define WXDEBUG_NEW new #endif +// Redefine new to be the debugging version. This doesn't work with all +// compilers, in which case you need to use WXDEBUG_NEW explicitly if you wish +// to use the debugging version. + +#if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS + #define new new(__TFILE__,__LINE__) #endif - // _WX_OBJECTH__ +#endif // _WX_OBJECTH__