X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4de6207afa9a78be63fe93df44ff5b90cecd2781..c822ad5a5e30a21ca3340af644bf79804cf7c777:/include/wx/object.h diff --git a/include/wx/object.h b/include/wx/object.h index b54f8c528a..d0eb3167f3 100644 --- a/include/wx/object.h +++ b/include/wx/object.h @@ -2,10 +2,11 @@ // Name: 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 +// Copyright: (c) 1997 Julian Smart and Markus Holzem +// (c) 2001 Ron Lee // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -16,6 +17,10 @@ #pragma interface "object.h" #endif +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- + #include "wx/defs.h" #include "wx/memory.h" @@ -23,136 +28,240 @@ class WXDLLEXPORT wxObject; #if wxUSE_DYNAMIC_CLASSES -// #ifdef __GNUWIN32__ +// ---------------------------------------------------------------------------- +// conditional compilation +// ---------------------------------------------------------------------------- + #ifdef GetClassName #undef GetClassName #endif #ifdef GetClassInfo #undef GetClassInfo #endif -// #endif class WXDLLEXPORT wxClassInfo; -class WXDLLEXPORT wxInputStream; -class WXDLLEXPORT wxOutputStream; -class WXDLLEXPORT wxObjectInputStream; -class WXDLLEXPORT wxObjectOutputStream; class WXDLLEXPORT wxHashTable; -class WXDLLEXPORT wxObject_Serialize; -#if wxUSE_IOSTREAMH - // N.B. BC++ doesn't have istream.h, ostream.h -# include -#else -# include -# if defined(__VISUALC__) || defined(__MWERKS__) - using namespace std; -# endif +#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(wxChar *cName, wxChar *baseName1, wxChar *baseName2, int sz, wxObjectConstructorFn fn); - - wxObject *CreateObject(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(); - inline wxChar *GetClassName(void) const { return m_className; } - inline wxChar *GetBaseClassName1(void) const { return m_baseClassName1; } - inline wxChar *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; } - static inline wxClassInfo* GetFirst() { return sm_first; } - inline wxClassInfo* GetNext() const { return m_next; } - bool IsKindOf(wxClassInfo *info) const; +public: + const wxChar *m_className; + const wxChar *m_baseClassName1; + const wxChar *m_baseClassName2; + int m_objectSize; + wxObjectConstructorFn m_objectConstructor; - static wxClassInfo *FindClass(wxChar *c); + // Pointers to base wxClassInfos: set in InitializeClasses - // Initializes parent pointers and hash table for fast searching. - static void InitializeClasses(void); + const wxClassInfo *m_baseInfo1; + const wxClassInfo *m_baseInfo2; - // Cleans up hash table used for fast searching. - static void CleanUpClasses(void); + // class info object live in a linked list: + // pointers to its head and the next element in it -public: - wxChar* m_className; - wxChar* m_baseClassName1; - wxChar* m_baseClassName2; - int m_objectSize; - wxObjectConstructorFn m_objectConstructor; + static wxClassInfo *sm_first; + wxClassInfo *m_next; - // Pointers to base wxClassInfos: set in InitializeClasses - // called from wx_main.cc - wxClassInfo* m_baseInfo1; - wxClassInfo* m_baseInfo2; + // FIXME: this should be private (currently used directly by way too + // many clients) + static wxHashTable *sm_classTable; - static wxClassInfo* sm_first; - wxClassInfo* m_next; - - static wxHashTable* sm_classTable; +private: + // InitializeClasses() helper + static wxClassInfo *GetBaseByName(const wxChar *name); }; -WXDLLEXPORT wxObject* wxCreateDynamicObject(const wxChar *name); +WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name); -#if wxUSE_SERIAL -WXDLLEXPORT wxObject* 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 -// 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((wxChar *) _T(#name), (wxChar *) _T(#basename), (wxChar *) NULL, (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); -// 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((wxChar *) _T(#name), (wxChar *) _T(#basename1), (wxChar *) _T(#basename2), (int) sizeof(name), (wxObjectConstructorFn) wxConstructorFor##name); + // Multiple inheritance with two base classes -////// -////// for abstract classes -////// +#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); -// Single inheritance with one base class -#define IMPLEMENT_ABSTRACT_CLASS(name, basename) \ - wxClassInfo name::sm_class##name((wxChar *) _T(#name), (wxChar *) _T(#basename), \ - (wxChar *) NULL, (int) sizeof(name), (wxObjectConstructorFn) NULL); +// ----------------------------------- +// for abstract classes +// ----------------------------------- -// Multiple inheritance with two base classes -#define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) \ - wxClassInfo name::sm_class##name((wxChar *) _T(#name), (wxChar *) _T(#basename1), \ - (wxChar *) _T(#basename2), (int) sizeof(name), (wxObjectConstructorFn) NULL); + // 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) @@ -163,15 +272,62 @@ 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 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) + +#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) + // Just seems a bit nicer-looking (pretend it's not a macro) + #define wxIsKindOf(obj, className) obj->IsKindOf(&className::sm_class##className) -// Unfortunately Borland seems to need this include. -#ifdef __BORLANDC__ + // 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__ + + + // Unfortunately Borland seems to need this include. + +#if wxUSE_STD_IOSTREAM \ + && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) \ + && defined(__BORLANDC__) #if wxUSE_IOSTREAMH #include #else @@ -179,86 +335,108 @@ wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name(void) \ #endif #endif + +// ---------------------------------------------------------------------------- +// wxObject +// ---------------------------------------------------------------------------- + class WXDLLEXPORT wxObjectRefData; class WXDLLEXPORT wxObject { - public: +DECLARE_ABSTRACT_CLASS(wxObject) - // This is equivalent to using the macro DECLARE_ABSTRACT_CLASS - static wxClassInfo sm_classwxObject; +public: + wxObject() : m_refData(0) {} + virtual ~wxObject() { UnRef(); } - wxObject(void); - virtual ~wxObject(void); + bool IsKindOf(wxClassInfo *info) const; - virtual wxClassInfo *GetClassInfo(void) const { return &sm_classwxObject; } +#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING + void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0); - bool IsKindOf(wxClassInfo *info) const; +#ifndef __VISAGECPP__ + void operator delete (void * buf); +#elif __DEBUG_ALLOC__ + void operator delete (void *buf, const char *_fname, size_t _line); +#endif -#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING - void * operator new (size_t size, wxChar * fileName = NULL, int lineNum = 0); - void operator delete (void * buf); + // VC++ 6.0 -// VC++ 6.0 #if defined(__VISUALC__) && (__VISUALC__ >= 1200) - void operator delete(void *buf, char*, int); + void operator delete(void *buf, wxChar*, int); #endif // Causes problems for VC++ + #if wxUSE_ARRAY_MEMORY_OPERATORS && !defined(__VISUALC__) && !defined( __MWERKS__) - void * operator new[] (size_t size, wxChar * fileName = NULL, int lineNum = 0); - void operator delete[] (void * buf); + void *operator new[] (size_t size, wxChar *fileName = 0, int lineNum = 0); + void operator delete[] (void *buf); #endif #ifdef __MWERKS__ - void * operator new[] (size_t size, wxChar * fileName , int lineNum = 0); - void operator delete[] (void * buf); + void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0); + void *operator new[] (size_t size) { return operator new[] ( size, 0, 0 ) ; } + void operator delete[] (void *buf); #endif #endif // Debug & memory tracing -#if defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT - virtual void Dump(ostream& str); -#endif -#if wxUSE_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; -#if wxUSE_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(); + + // 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; -/* - * wxObjectData - */ + // create a new m_refData initialized with the given one + virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const; + + wxObjectRefData *m_refData; +}; -class WXDLLEXPORT wxObjectRefData { +class WXDLLEXPORT wxObjectRefData +{ friend class wxObject; public: - wxObjectRefData(void); - virtual ~wxObjectRefData(void); + wxObjectRefData() : m_count(1) {} + virtual ~wxObjectRefData() {} - inline int GetRefCount(void) const { return m_count; } + inline int GetRefCount() const { return m_count; } private: int m_count; }; + +inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo) +{ + return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : 0; +} + #ifdef __WXDEBUG__ #ifndef WXDEBUG_NEW #define WXDEBUG_NEW new(__TFILE__,__LINE__) @@ -267,15 +445,14 @@ private: #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. + // 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 -#endif - // _WX_OBJECTH__ - +#endif // _WX_OBJECTH__ +// vi:sts=4:sw=4:et