X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2e0b1b1114e03aa1a49713cdefe5ce6dbed9af16..7eb8c6ee3e90554c94d05dc06e6826f832640927:/include/wx/object.h diff --git a/include/wx/object.h b/include/wx/object.h index 1ae3844253..1443bcfa93 100644 --- a/include/wx/object.h +++ b/include/wx/object.h @@ -1,11 +1,11 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: object.h +// Name: wx/object.h // Purpose: wxObject class, plus run-time type information macros // Author: Julian Smart // Modified by: Ron Lee // Created: 01/02/97 // RCS-ID: $Id$ -// Copyright: (c) 1997 Julian Smart and Markus Holzem +// Copyright: (c) 1997 Julian Smart // (c) 2001 Ron Lee // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -13,7 +13,7 @@ #ifndef _WX_OBJECTH__ #define _WX_OBJECTH__ -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma interface "object.h" #endif @@ -24,14 +24,24 @@ #include "wx/defs.h" #include "wx/memory.h" -class WXDLLEXPORT wxObject; +class WXDLLIMPEXP_BASE wxObject; #if wxUSE_DYNAMIC_CLASSES +#ifndef wxUSE_EXTENDED_RTTI +#define wxUSE_EXTENDED_RTTI 0 +#endif + +#if wxUSE_EXTENDED_RTTI +#include "wx/xti.h" +#else + // ---------------------------------------------------------------------------- // conditional compilation // ---------------------------------------------------------------------------- +// this shouldn't be needed any longer as does it but it +// doesn't hurt neither #ifdef GetClassName #undef GetClassName #endif @@ -39,13 +49,9 @@ class WXDLLEXPORT wxObject; #undef GetClassInfo #endif -class WXDLLEXPORT wxClassInfo; -class WXDLLEXPORT wxHashTable; - -#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) -#include "wx/ioswrap.h" -#endif - +class WXDLLIMPEXP_BASE wxClassInfo; +class WXDLLIMPEXP_BASE wxHashTable; +class WXDLLIMPEXP_BASE wxObjectRefData; // ---------------------------------------------------------------------------- // wxClassInfo @@ -53,29 +59,34 @@ class WXDLLEXPORT wxHashTable; typedef wxObject *(*wxObjectConstructorFn)(void); -class WXDLLEXPORT wxClassInfo +class WXDLLIMPEXP_BASE wxClassInfo { public: wxClassInfo( const wxChar *className, - const wxChar *baseName1, - const wxChar *baseName2, + const wxClassInfo *baseInfo1, + const wxClassInfo *baseInfo2, 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_baseInfo1(baseInfo1) + , m_baseInfo2(baseInfo2) , m_next(sm_first) - { sm_first = this; } + { + sm_first = this; + Register(); + } + + ~wxClassInfo(); 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 wxChar *GetBaseClassName1() const + { return m_baseInfo1 ? m_baseInfo1->GetClassName() : NULL; } + const wxChar *GetBaseClassName2() const + { return m_baseInfo2 ? m_baseInfo2->GetClassName() : NULL; } const wxClassInfo *GetBaseClass1() const { return m_baseInfo1; } const wxClassInfo *GetBaseClass2() const { return m_baseInfo2; } int GetSize() const { return m_objectSize; } @@ -84,7 +95,7 @@ public: 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. @@ -96,18 +107,16 @@ public: ( 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(); - +#if WXWIN_COMPATIBILITY_2_4 + // Initializes parent pointers and hash table for fast searching. + wxDEPRECATED( static void InitializeClasses() ); + // Cleans up hash table used for fast searching. + wxDEPRECATED( static void CleanUpClasses() ); +#endif + static void CleanUp(); + public: const wxChar *m_className; - const wxChar *m_baseClassName1; - const wxChar *m_baseClassName2; int m_objectSize; wxObjectConstructorFn m_objectConstructor; @@ -122,11 +131,28 @@ public: 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) + +protected: + // registers the class + void Register(); + void Unregister(); }; -WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name); +WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxChar *name); +#if WXWIN_COMPATIBILITY_2_4 +inline void wxClassInfo::InitializeClasses() {} +inline void wxClassInfo::CleanUpClasses() {} +#endif // ---------------------------------------------------------------------------- // Dynamic class macros @@ -134,9 +160,18 @@ WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name); #define DECLARE_DYNAMIC_CLASS(name) \ public: \ - static wxClassInfo sm_class##name; \ + static wxClassInfo ms_classInfo; \ + static wxObject* wxCreateObject(); \ virtual wxClassInfo *GetClassInfo() const \ - { return &name::sm_class##name; } + { return &name::ms_classInfo; } + +#define DECLARE_DYNAMIC_CLASS_NO_ASSIGN(name) \ + DECLARE_NO_ASSIGN_CLASS(name) \ + DECLARE_DYNAMIC_CLASS(name) + +#define DECLARE_DYNAMIC_CLASS_NO_COPY(name) \ + DECLARE_NO_COPY_CLASS(name) \ + DECLARE_DYNAMIC_CLASS(name) #define DECLARE_ABSTRACT_CLASS(name) DECLARE_DYNAMIC_CLASS(name) #define DECLARE_CLASS(name) DECLARE_DYNAMIC_CLASS(name) @@ -148,20 +183,23 @@ WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name); // Single inheritance with one base class #define IMPLEMENT_DYNAMIC_CLASS(name, basename) \ - wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name() \ + wxObject* name::wxCreateObject() \ { return new name; } \ - wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename), \ - 0, (int) sizeof(name), \ - (wxObjectConstructorFn) wxConstructorFor##name); + wxClassInfo name::ms_classInfo(wxT(#name), \ + &basename::ms_classInfo, NULL, \ + (int) sizeof(name), \ + (wxObjectConstructorFn) name::wxCreateObject); // Multiple inheritance with two base classes #define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) \ - wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name() \ + wxObject* name::wxCreateObject() \ { return new name; } \ - wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename1), \ + wxClassInfo name::ms_classInfo(wxT(#name), \ + &basename1::ms_classInfo, \ + &basename2::ms_classInfo, \ wxT(#basename2), (int) sizeof(name), \ - (wxObjectConstructorFn) wxConstructorFor##name); + (wxObjectConstructorFn) name::wxCreateObject); // ----------------------------------- // for abstract classes @@ -170,19 +208,25 @@ WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name); // 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); + wxClassInfo name::ms_classInfo(wxT(#name), \ + &basename::ms_classInfo, NULL, \ + (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), \ + wxClassInfo name::ms_classInfo(wxT(#name), \ + &basename1::ms_classInfo, \ + &basename2::ms_classInfo, \ + (int) sizeof(name), \ (wxObjectConstructorFn) 0); #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2 +#endif // !wxUSE_EXTENDED_RTTI + + // ----------------------------------- // for pluggable classes // ----------------------------------- @@ -208,11 +252,11 @@ name##PluginSentinel m_pluginsentinel; #define _IMPLEMENT_DL_SENTINEL(name) \ const wxString name::name##PluginSentinel::sm_className(#name); \ name::name##PluginSentinel::name##PluginSentinel() { \ - wxDLManifestEntry *e = (wxDLManifestEntry*) wxDLManifestEntry::ms_classes.Get(#name); \ + wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name); \ if( e != 0 ) { e->RefObj(); } \ } \ - name::name##PluginSentinel::~##name##PluginSentinel() { \ - wxDLManifestEntry *e = (wxDLManifestEntry*) wxDLManifestEntry::ms_classes.Get(#name); \ + name::name##PluginSentinel::~name##PluginSentinel() { \ + wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name); \ if( e != 0 ) { e->UnrefObj(); } \ } #else @@ -250,8 +294,7 @@ name##PluginSentinel m_pluginsentinel; #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2) \ IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2) - -#define CLASSINFO(name) (&name::sm_class##name) +#define CLASSINFO(name) (&name::ms_classInfo) #else // !wxUSE_DYNAMIC_CLASSES @@ -283,130 +326,202 @@ name##PluginSentinel m_pluginsentinel; #endif // wxUSE_DYNAMIC_CLASSES +#define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::ms_classInfo) -#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 +// Just seems a bit nicer-looking (pretend it's not a macro) +#define wxIsKindOf(obj, className) obj->IsKindOf(&className::ms_classInfo) +// 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. + ((className *) wxCheckDynamicCast( \ + wx_const_cast(wxObject *, wx_static_cast(const wxObject *, \ + wx_const_cast(className *, wx_static_cast(const className *, obj)))), \ + &className::ms_classInfo)) +// 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)) - + (IsKindOf(&className::ms_classInfo) ? (className *)(this) : (className *)0) #ifdef __WXDEBUG__ -inline void wxCheckCast(void *ptr) +inline void* wxCheckCast(void *ptr) { wxASSERT_MSG( ptr, _T("wxStaticCast() used incorrectly") ); + return ptr; } #define wxStaticCast(obj, className) \ - (wxCheckCast(wxDynamicCast(obj, className)), ((className *)(obj))) + ((className *)wxCheckCast(wxDynamicCast(obj, className))) #else // !__WXDEBUG__ #define wxStaticCast(obj, className) ((className *)(obj)) #endif // __WXDEBUG__ +// ---------------------------------------------------------------------------- +// set up memory debugging macros +// ---------------------------------------------------------------------------- + +/* + Which new/delete operator variants do we want? - // Unfortunately Borland seems to need this include. + _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 wxUSE_STD_IOSTREAM \ - && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) \ - && defined(__BORLANDC__) -#if wxUSE_IOSTREAMH -#include -#else -#include +#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 + +// 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 +// wxObject: the root class of wxWidgets object hierarchy // ---------------------------------------------------------------------------- -class WXDLLEXPORT wxObjectRefData; - -class WXDLLEXPORT wxObject +class WXDLLIMPEXP_BASE wxObject { -DECLARE_ABSTRACT_CLASS(wxObject) + DECLARE_ABSTRACT_CLASS(wxObject) + +private: + void InitFrom(const wxObject& other); public: - wxObject() : m_refData(0) {} + 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; -#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING - void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0); -#ifndef __VISAGECPP__ - void operator delete (void * buf); -#elif __DEBUG_ALLOC__ - void operator delete (void *buf, const char *_fname, size_t _line); + // 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 - // VC++ 6.0 +#ifdef _WX_WANT_DELETE_VOID + void operator delete ( void * buf ); +#endif -#if defined(__VISUALC__) && (__VISUALC__ >= 1200) - void operator delete(void *buf, wxChar*, int); +#ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET + void operator delete ( void *buf, const char *_fname, size_t _line ); #endif - // Causes problems for VC++ +#ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT + void operator delete ( void *buf, const wxChar*, int ); +#endif -#if wxUSE_ARRAY_MEMORY_OPERATORS && !defined(__VISUALC__) && !defined( __MWERKS__) - void *operator new[] (size_t size, wxChar *fileName = 0, 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 __MWERKS__ - 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); +#ifdef _WX_WANT_ARRAY_DELETE_VOID + void operator delete[] ( void *buf ); #endif -#endif // Debug & memory tracing +#ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT + void operator delete[] (void* buf, const wxChar*, int ); +#endif + // ref counted data handling methods -#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) - virtual void Dump(wxSTD ostream& str); -#endif + // get/set + wxObjectRefData *GetRefData() const { return m_refData; } + void SetRefData(wxObjectRefData *data) { m_refData = data; } - // make a 'clone' of the object - + // make a 'clone' of the object void Ref(const wxObject& clone); - // destroy a reference - + // destroy a reference void UnRef(); - inline wxObjectRefData *GetRefData() const { return m_refData; } - inline void SetRefData(wxObjectRefData *data) { m_refData = data; } - protected: + // 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; + + // create a new m_refData initialized with the given one + virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const; + wxObjectRefData *m_refData; }; +// ---------------------------------------------------------------------------- +// wxObjectRefData: ref counted data meant to be stored in wxObject +// ---------------------------------------------------------------------------- -class WXDLLEXPORT wxObjectRefData +class WXDLLIMPEXP_BASE wxObjectRefData { - friend class wxObject; + friend class WXDLLIMPEXP_BASE wxObject; public: - wxObjectRefData() : m_count(1) {} - virtual ~wxObjectRefData() {} + wxObjectRefData() : m_count(1) { } + virtual ~wxObjectRefData() { } + + int GetRefCount() const { return m_count; } - inline int GetRefCount() const { return m_count; } private: int m_count; }; @@ -414,25 +529,64 @@ private: inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo) { - return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : 0; + return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : NULL; } -#ifdef __WXDEBUG__ -#ifndef WXDEBUG_NEW -#define WXDEBUG_NEW new(__TFILE__,__LINE__) +#if wxUSE_EXTENDED_RTTI +class WXDLLIMPEXP_BASE wxDynamicObject : public wxObject +{ + friend class WXDLLIMPEXP_BASE wxDynamicClassInfo ; +public: + // instantiates this object with an instance of its superclass + wxDynamicObject(wxObject* superClassInstance, const wxDynamicClassInfo *info) ; + ~wxDynamicObject(); + + void SetProperty (const wxChar *propertyName, const wxxVariant &value); + wxxVariant GetProperty (const wxChar *propertyName) const ; + + // get the runtime identity of this object + wxClassInfo *GetClassInfo() const + { + return wx_const_cast(wxClassInfo *, m_classInfo); + } + + wxObject* GetSuperClassInstance() const + { + return m_superClassInstance ; + } +private : + // removes an existing runtime-property + void RemoveProperty( const wxChar *propertyName ) ; + + // renames an existing runtime-property + void RenameProperty( const wxChar *oldPropertyName , const wxChar *newPropertyName ) ; + + wxObject *m_superClassInstance ; + const wxDynamicClassInfo *m_classInfo; + struct wxDynamicObjectInternal; + wxDynamicObjectInternal *m_data; +}; #endif -#else -#define WXDEBUG_NEW new + +// ---------------------------------------------------------------------------- +// 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. +// 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__) + #define new new(__TFILE__,__LINE__) #endif #endif // _WX_OBJECTH__ -// vi:sts=4:sw=4:et