X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7c1e2b44010c1a8dcf9bd26c390d1991f6f7e64f..cbeda384e51acb82e13994cb67ac1714669cae10:/include/wx/object.h diff --git a/include/wx/object.h b/include/wx/object.h index 69ad1b9f88..9da3222c8e 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 ///////////////////////////////////////////////////////////////////////////// @@ -13,39 +13,64 @@ #ifndef _WX_OBJECTH__ #define _WX_OBJECTH__ -#ifdef __GNUG__ -#pragma interface "object.h" -#endif - // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- -#include "wx/defs.h" #include "wx/memory.h" -class WXDLLEXPORT wxObject; +class WXDLLIMPEXP_FWD_BASE wxObject; +class WXDLLIMPEXP_FWD_BASE wxString; -#if wxUSE_DYNAMIC_CLASSES +#ifndef wxUSE_EXTENDED_RTTI +#define wxUSE_EXTENDED_RTTI 0 +#endif + +#define DECLARE_CLASS_INFO_ITERATORS() \ + class WXDLLIMPEXP_BASE const_iterator \ + { \ + typedef wxHashTable_Node Node; \ + public: \ + typedef const wxClassInfo* value_type; \ + typedef const value_type& const_reference; \ + typedef const_iterator itor; \ + typedef value_type* ptr_type; \ + \ + Node* m_node; \ + wxHashTable* m_table; \ + public: \ + typedef const_reference reference_type; \ + typedef ptr_type pointer_type; \ + \ + const_iterator(Node* node, wxHashTable* table) \ + : m_node(node), m_table(table) { } \ + const_iterator() : m_node(NULL), m_table(NULL) { } \ + value_type operator*() const; \ + itor& operator++(); \ + const itor operator++(int); \ + bool operator!=(const itor& it) const \ + { return it.m_node != m_node; } \ + bool operator==(const itor& it) const \ + { return it.m_node == m_node; } \ + }; \ + \ + static const_iterator begin_classinfo(); \ + static const_iterator end_classinfo(); + +#if wxUSE_EXTENDED_RTTI +#include "wx/xti.h" +#else // ---------------------------------------------------------------------------- // conditional compilation // ---------------------------------------------------------------------------- -#ifdef GetClassName -#undef GetClassName -#endif -#ifdef GetClassInfo -#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_FWD_BASE wxClassInfo; +class WXDLLIMPEXP_FWD_BASE wxHashTable; +class WXDLLIMPEXP_FWD_BASE wxObject; +class WXDLLIMPEXP_FWD_BASE wxPluginLibrary; +class WXDLLIMPEXP_FWD_BASE wxObjectRefData; +class WXDLLIMPEXP_FWD_BASE wxHashTable_Node; // ---------------------------------------------------------------------------- // wxClassInfo @@ -53,38 +78,48 @@ class WXDLLEXPORT wxHashTable; typedef wxObject *(*wxObjectConstructorFn)(void); -class WXDLLEXPORT wxClassInfo +class WXDLLIMPEXP_BASE wxClassInfo { + friend class WXDLLIMPEXP_FWD_BASE wxObject; + friend WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxString& name); 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; } + wxObject *CreateObject() const + { return m_objectConstructor ? (*m_objectConstructor)() : 0; } + bool IsDynamic() const { return (NULL != m_objectConstructor); } 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; } - wxObjectConstructorFn GetConstructor() const { return m_objectConstructor; } + 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); - + static wxClassInfo *FindClass(const wxString& className); + // Climb upwards through inheritance hierarchy. // Dual inheritance is catered for. @@ -96,22 +131,13 @@ 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(); - -public: + DECLARE_CLASS_INFO_ITERATORS() +private: 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 + // Pointers to base wxClassInfos const wxClassInfo *m_baseInfo1; const wxClassInfo *m_baseInfo2; @@ -123,45 +149,74 @@ public: wxClassInfo *m_next; static wxHashTable *sm_classTable; -}; -WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name); +protected: + // registers the class + void Register(); + void Unregister(); + + wxDECLARE_NO_COPY_CLASS(wxClassInfo); +}; +WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxString& name); // ---------------------------------------------------------------------------- // Dynamic class macros // ---------------------------------------------------------------------------- -#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) \ + public: \ + static wxClassInfo ms_classInfo; \ + virtual wxClassInfo *GetClassInfo() const; + +#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_DYNAMIC_CLASS(name) \ + DECLARE_ABSTRACT_CLASS(name) \ + static wxObject* wxCreateObject(); -#define DECLARE_ABSTRACT_CLASS(name) DECLARE_DYNAMIC_CLASS(name) #define DECLARE_CLASS(name) DECLARE_DYNAMIC_CLASS(name) + +// common part of the macros below +#define wxIMPLEMENT_CLASS_COMMON(name, basename, baseclsinfo2, func) \ + wxClassInfo name::ms_classInfo(wxT(#name), \ + &basename::ms_classInfo, \ + baseclsinfo2, \ + (int) sizeof(name), \ + func); \ + \ + wxClassInfo *name::GetClassInfo() const \ + { return &name::ms_classInfo; } + +#define wxIMPLEMENT_CLASS_COMMON1(name, basename, func) \ + wxIMPLEMENT_CLASS_COMMON(name, basename, NULL, func) + +#define wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, func) \ + wxIMPLEMENT_CLASS_COMMON(name, basename1, &basename2::ms_classInfo, func) + // ----------------------------------- // for concrete classes // ----------------------------------- // Single inheritance with one base class - -#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); +#define IMPLEMENT_DYNAMIC_CLASS(name, basename) \ + wxIMPLEMENT_CLASS_COMMON1(name, basename, name::wxCreateObject) \ + wxObject* name::wxCreateObject() \ + { return new name; } // Multiple inheritance with two base 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); +#define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) \ + wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, \ + name::wxCreateObject) \ + wxObject* name::wxCreateObject() \ + { return new name; } // ----------------------------------- // for abstract classes @@ -169,20 +224,20 @@ 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); +#define IMPLEMENT_ABSTRACT_CLASS(name, basename) \ + wxIMPLEMENT_CLASS_COMMON1(name, basename, NULL) // 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_ABSTRACT_CLASS2(name, basename1, basename2) \ + wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, NULL) #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2 +#endif // !wxUSE_EXTENDED_RTTI + + // ----------------------------------- // for pluggable classes // ----------------------------------- @@ -195,31 +250,24 @@ WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name); #if wxUSE_NESTED_CLASSES -#if 0 -#define _DECLARE_DL_SENTINEL(name) \ - wxPluginSentinel m_pluginsentinel; - -#else - -#define _DECLARE_DL_SENTINEL(name) \ -class name##PluginSentinel { \ -private: \ - static const wxString sm_className; \ -public: \ - name##PluginSentinel(); \ - ~##name##PluginSentinel(); \ -}; \ +#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; -#endif #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 @@ -230,197 +278,387 @@ name##PluginSentinel m_pluginsentinel; #endif // wxUSE_NESTED_CLASSES #define DECLARE_PLUGGABLE_CLASS(name) \ - DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name) - + DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLIMPEXP_CORE) #define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name) \ - DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name) + DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLIMPEXP_CORE) + +#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) +#define CLASSINFO(name) (&name::ms_classInfo) -#else // !wxUSE_DYNAMIC_CLASSES +#define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::ms_classInfo) - // No dynamic class system: so stub out the macros +// Just seems a bit nicer-looking (pretend it's not a macro) +#define wxIsKindOf(obj, className) obj->IsKindOf(&className::ms_classInfo) -#define DECLARE_DYNAMIC_CLASS(name) -#define DECLARE_ABSTRACT_CLASS(name) -#define DECLARE_CLASS(name) -#define IMPLEMENT_DYNAMIC_CLASS(name, basename) -#define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) -#define IMPLEMENT_ABSTRACT_CLASS(name, basename) -#define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) -#define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS -#define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2 +// this cast does some more checks at compile time as it uses static_cast +// internally +// +// note that it still has different semantics from dynamic_cast<> and so can't +// be replaced by it as long as there are any compilers not supporting it +#define wxDynamicCast(obj, className) \ + ((className *) wxCheckDynamicCast( \ + const_cast(static_cast(\ + const_cast(static_cast(obj)))), \ + &className::ms_classInfo)) -#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) +// The 'this' pointer is always true, so use this version +// to cast the this pointer and avoid compiler warnings. +#define wxDynamicCastThis(className) \ + (IsKindOf(&className::ms_classInfo) ? (className *)(this) : (className *)0) -#endif // wxUSE_DYNAMIC_CLASSES +// FIXME-VC6: dummy argument needed because VC6 doesn't support explicitly +// choosing the template function to call +template +inline T *wxCheckCast(const void *ptr, T * = NULL) +{ + wxASSERT_MSG( wxDynamicCast(ptr, T), "wxStaticCast() used incorrectly" ); + return const_cast(static_cast(ptr)); +} +#define wxStaticCast(obj, className) wxCheckCast((obj), (className *)NULL) -#define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::sm_class##className) +// ---------------------------------------------------------------------------- +// set up memory debugging macros +// ---------------------------------------------------------------------------- - // Just seems a bit nicer-looking (pretend it's not a macro) +/* + Which new/delete operator variants do we want? -#define wxIsKindOf(obj, className) obj->IsKindOf(&className::sm_class##className) + _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 ) +*/ - // to be replaced by dynamic_cast<> in the future +#if wxUSE_MEMORY_TRACING -#define wxDynamicCast(obj, className) \ - (className *) wxCheckDynamicCast((wxObject*)(obj), &className::sm_class##className) +// All compilers get this one +#define _WX_WANT_NEW_SIZET_WXCHAR_INT - // The 'this' pointer is always true, so use this version - // to cast the this pointer and avoid compiler warnings. +// Everyone except Visage gets the next one +#ifndef __VISAGECPP__ + #define _WX_WANT_DELETE_VOID +#endif -#define wxDynamicCastThis(className) \ - (IsKindOf(&className::sm_class##className) ? (className *)(this) : (className *)0) +// Only visage gets this one under the correct circumstances +#if defined(__VISAGECPP__) && __DEBUG_ALLOC__ + #define _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET +#endif -#define wxConstCast(obj, className) ((className *)(obj)) +// Only VC++ 6 and CodeWarrior 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 -#ifdef __WXDEBUG__ -inline void wxCheckCast(void *ptr) -{ - wxASSERT_MSG( ptr, _T("wxStaticCast() used incorrectly") ); -} -#define wxStaticCast(obj, className) \ - (wxCheckCast(wxDynamicCast(obj, className)), ((className *)(obj))) + // Everyone except Visual C++ (cause problems for VC++ - crashes) + #if !defined(__VISUALC__) + #define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT + #endif -#else // !__WXDEBUG__ -#define wxStaticCast(obj, className) ((className *)(obj)) + // Everyone except Visual C++ (cause problems for VC++ - crashes) + #if !defined(__VISUALC__) + #define _WX_WANT_ARRAY_DELETE_VOID + #endif -#endif // __WXDEBUG__ + // Only CodeWarrior 6 or higher + #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400) + #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT + #endif +#endif // wxUSE_ARRAY_MEMORY_OPERATORS - // Unfortunately Borland seems to need this include. +#endif // wxUSE_MEMORY_TRACING -#if wxUSE_STD_IOSTREAM \ - && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) \ - && defined(__BORLANDC__) -#if wxUSE_IOSTREAMH -#include -#else -#include -#endif -#endif +// ---------------------------------------------------------------------------- +// wxObjectRefData: ref counted data meant to be stored in wxObject +// ---------------------------------------------------------------------------- + +class WXDLLIMPEXP_BASE wxObjectRefData +{ + friend class WXDLLIMPEXP_FWD_BASE wxObject; + +public: + wxObjectRefData() : m_count(1) { } + int GetRefCount() const { return m_count; } + + void IncRef() { m_count++; } + void DecRef(); + +protected: + // this object should never be destroyed directly but only as a + // result of a DecRef() call: + virtual ~wxObjectRefData() { } + +private: + // our refcount: + int m_count; +}; // ---------------------------------------------------------------------------- -// wxObject +// wxObjectDataPtr: helper class to avoid memleaks because of missing calls +// to wxObjectRefData::DecRef // ---------------------------------------------------------------------------- -class WXDLLEXPORT wxObjectRefData; +template +class wxObjectDataPtr +{ +public: + typedef T element_type; + + wxEXPLICIT wxObjectDataPtr(T *ptr = NULL) : m_ptr(ptr) {} + + // copy ctor + wxObjectDataPtr(const wxObjectDataPtr &tocopy) + : m_ptr(tocopy.m_ptr) + { + if (m_ptr) + m_ptr->IncRef(); + } + + ~wxObjectDataPtr() + { + if (m_ptr) + m_ptr->DecRef(); + } + + T *get() const { return m_ptr; } + + // test for pointer validity: defining conversion to unspecified_bool_type + // and not more obvious bool to avoid implicit conversions to integer types + typedef T *(wxObjectDataPtr::*unspecified_bool_type)() const; + operator unspecified_bool_type() const + { + return m_ptr ? &wxObjectDataPtr::get : NULL; + } + + T& operator*() const + { + wxASSERT(m_ptr != NULL); + return *(m_ptr); + } + + T *operator->() const + { + wxASSERT(m_ptr != NULL); + return get(); + } + + void reset(T *ptr) + { + if (m_ptr) + m_ptr->DecRef(); + m_ptr = ptr; + } + + wxObjectDataPtr& operator=(const wxObjectDataPtr &tocopy) + { + if (m_ptr) + m_ptr->DecRef(); + m_ptr = tocopy.m_ptr; + if (m_ptr) + m_ptr->IncRef(); + return *this; + } + + wxObjectDataPtr& operator=(T *ptr) + { + if (m_ptr) + m_ptr->DecRef(); + m_ptr = ptr; + return *this; + } + +private: + T *m_ptr; +}; -class WXDLLEXPORT wxObject +// ---------------------------------------------------------------------------- +// wxObject: the root class of wxWidgets object hierarchy +// ---------------------------------------------------------------------------- + +class WXDLLIMPEXP_BASE wxObject { -DECLARE_ABSTRACT_CLASS(wxObject) + DECLARE_ABSTRACT_CLASS(wxObject) public: - wxObject() : m_refData(0) {} + wxObject() { m_refData = NULL; } virtual ~wxObject() { UnRef(); } - bool IsKindOf(wxClassInfo *info) const; + wxObject(const wxObject& other) + { + m_refData = other.m_refData; + if (m_refData) + m_refData->m_count++; + } -#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING - void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0); + wxObject& operator=(const wxObject& other) + { + if ( this != &other ) + { + Ref(other); + } + return *this; + } -#ifndef __VISAGECPP__ - void operator delete (void * buf); -#elif __DEBUG_ALLOC__ - void operator delete (void *buf, const char *_fname, size_t _line); -#endif + bool IsKindOf(const wxClassInfo *info) const; - // VC++ 6.0 -#if defined(__VISUALC__) && (__VISUALC__ >= 1200) - void operator delete(void *buf, wxChar*, int); + // 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 - // Causes problems for VC++ +#ifdef _WX_WANT_DELETE_VOID + void operator delete ( void * buf ); +#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_DELETE_VOID_CONSTCHAR_SIZET + void operator delete ( void *buf, const char *_fname, size_t _line ); #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_DELETE_VOID_WXCHAR_INT + void operator delete ( void *buf, const wxChar*, int ); #endif -#endif // Debug & memory tracing +#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 wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) - virtual void Dump(wxSTD ostream& str); +#ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT + void operator delete[] (void* buf, const wxChar*, int ); #endif - // make a 'clone' of the object - + // ref counted data handling methods + + // get/set + wxObjectRefData *GetRefData() const { return m_refData; } + void SetRefData(wxObjectRefData *data) { m_refData = data; } + + // 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; } + // Make sure this object has only one reference + void UnShare() { AllocExclusive(); } + + // check if this object references the same data as the other one + bool IsSameAs(const wxObject& o) const { return m_refData == o.m_refData; } protected: - wxObjectRefData *m_refData; -}; + // 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 AllocExclusive() is used, not pure + // virtual only because of the backwards compatibility reasons -class WXDLLEXPORT wxObjectRefData -{ - friend class wxObject; + // create a new m_refData + virtual wxObjectRefData *CreateRefData() const; -public: - wxObjectRefData() : m_count(1) {} - virtual ~wxObjectRefData() {} + // create a new m_refData initialized with the given one + virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const; - inline int GetRefCount() const { return m_count; } -private: - int m_count; + wxObjectRefData *m_refData; }; - 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__) -#endif +#if wxUSE_EXTENDED_RTTI +class WXDLLIMPEXP_BASE wxDynamicObject : public wxObject +{ + friend class WXDLLIMPEXP_FWD_BASE wxDynamicClassInfo ; +public: + // instantiates this object with an instance of its superclass + wxDynamicObject(wxObject* superClassInstance, const wxDynamicClassInfo *info) ; + virtual ~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 + { +#ifdef _MSC_VER + return (wxClassInfo*) m_classInfo; #else -#define WXDEBUG_NEW new + wxDynamicClassInfo *nonconst = const_cast(m_classInfo); + return static_cast(nonconst); #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. + wxObject* GetSuperClassInstance() const + { + return m_superClassInstance ; + } +private : + // removes an existing runtime-property + void RemoveProperty( const wxChar *propertyName ) ; -#if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS -#define new new(__TFILE__,__LINE__) + // 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 -#endif // _WX_OBJECTH__ +// ---------------------------------------------------------------------------- +// more debugging macros +// ---------------------------------------------------------------------------- + +#if wxUSE_DEBUG_NEW_ALWAYS + #define WXDEBUG_NEW new(__TFILE__,__LINE__) + + #if wxUSE_GLOBAL_MEMORY_OPERATORS + #define new WXDEBUG_NEW + #elif defined(__VISUALC__) + // Including this file redefines new and allows leak reports to + // contain line numbers + #include "wx/msw/msvcrt.h" + #endif +#endif // wxUSE_DEBUG_NEW_ALWAYS -// vi:sts=4:sw=4:et +#endif // _WX_OBJECTH__