X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/77ffb5937e89927b621128789401db8921fe580f..2a45803fc3877afd0ae3ce356dfe216505165882:/include/wx/object.h?ds=sidebyside diff --git a/include/wx/object.h b/include/wx/object.h index 3bfcef9c01..cb9d8f8c98 100644 --- a/include/wx/object.h +++ b/include/wx/object.h @@ -7,225 +7,61 @@ // RCS-ID: $Id$ // Copyright: (c) 1997 Julian Smart // (c) 2001 Ron Lee -// Licence: wxWidgets licence +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_OBJECTH__ #define _WX_OBJECTH__ -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) -#pragma interface "object.h" -#endif - // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- -#include "wx/defs.h" #include "wx/memory.h" -class WXDLLIMPEXP_BASE wxObject; - -#if wxUSE_DYNAMIC_CLASSES - -#ifndef wxUSE_EXTENDED_RTTI -#define wxUSE_EXTENDED_RTTI 0 -#endif - -#if wxUSE_EXTENDED_RTTI +#define wxDECLARE_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() + +// based on the value of wxUSE_EXTENDED_RTTI symbol, +// only one of the RTTI system will be compiled: +// - the "old" one (defined by rtti.h) or +// - the "new" one (defined by xti.h) #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 -#ifdef GetClassInfo -#undef GetClassInfo -#endif - -class WXDLLIMPEXP_BASE wxClassInfo; -class WXDLLIMPEXP_BASE wxHashTable; -class WXDLLIMPEXP_BASE wxObjectRefData; - -// ---------------------------------------------------------------------------- -// wxClassInfo -// ---------------------------------------------------------------------------- - -typedef wxObject *(*wxObjectConstructorFn)(void); - -class WXDLLIMPEXP_BASE wxClassInfo -{ -public: - wxClassInfo( const wxChar *className, - const wxClassInfo *baseInfo1, - const wxClassInfo *baseInfo2, - int size, - wxObjectConstructorFn ctor ) - : m_className(className) - , m_objectSize(size) - , m_objectConstructor(ctor) - , m_baseInfo1(baseInfo1) - , m_baseInfo2(baseInfo2) - , m_next(sm_first) - { - 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_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; } - 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) ) ); - } - -#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; - 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) - -protected: - // registers the class - void Register(); - void Unregister(); -}; - -WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxChar *name); - -#if WXWIN_COMPATIBILITY_2_4 -inline void wxClassInfo::InitializeClasses() {} -inline void wxClassInfo::CleanUpClasses() {} -#endif - -// ---------------------------------------------------------------------------- -// Dynamic class macros -// ---------------------------------------------------------------------------- - -#define DECLARE_DYNAMIC_CLASS(name) \ - public: \ - static wxClassInfo ms_classInfo; \ - static wxObject* wxCreateObject(); \ - virtual wxClassInfo *GetClassInfo() const \ - { 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) - -// ----------------------------------- -// for concrete classes -// ----------------------------------- +#include "wx/rtti.h" - // Single inheritance with one base class - -#define IMPLEMENT_DYNAMIC_CLASS(name, basename) \ - wxObject* name::wxCreateObject() \ - { return new 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* name::wxCreateObject() \ - { return new name; } \ - wxClassInfo name::ms_classInfo(wxT(#name), \ - &basename1::ms_classInfo, \ - &basename2::ms_classInfo, \ - wxT(#basename2), (int) sizeof(name), \ - (wxObjectConstructorFn) name::wxCreateObject); - -// ----------------------------------- -// for abstract classes -// ----------------------------------- - - // Single inheritance with one base class - -#define IMPLEMENT_ABSTRACT_CLASS(name, basename) \ - 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::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 +#define wxIMPLEMENT_CLASS(name, basename) \ + wxIMPLEMENT_ABSTRACT_CLASS(name, basename) +#define wxIMPLEMENT_CLASS2(name, basename1, basename2) \ + wxIMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) // ----------------------------------- // for pluggable classes @@ -247,7 +83,7 @@ public: \ name##PluginSentinel(); \ ~name##PluginSentinel(); \ }; \ -name##PluginSentinel m_pluginsentinel; +name##PluginSentinel m_pluginsentinel #define _IMPLEMENT_DL_SENTINEL(name) \ const wxString name::name##PluginSentinel::sm_className(#name); \ @@ -266,96 +102,67 @@ name##PluginSentinel m_pluginsentinel; #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::ms_classInfo) - -#else // !wxUSE_DYNAMIC_CLASSES - - // No dynamic class system: so stub out the macros - -#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 - -#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 wxDECLARE_PLUGGABLE_CLASS(name) \ + wxDECLARE_DYNAMIC_CLASS(name); _DECLARE_DL_SENTINEL(name, WXDLLIMPEXP_CORE) +#define wxDECLARE_ABSTRACT_PLUGGABLE_CLASS(name) \ + wxDECLARE_ABSTRACT_CLASS(name); _DECLARE_DL_SENTINEL(name, WXDLLIMPEXP_CORE) + +#define wxDECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo) \ + wxDECLARE_DYNAMIC_CLASS(name); _DECLARE_DL_SENTINEL(name, usergoo) +#define wxDECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo) \ + wxDECLARE_ABSTRACT_CLASS(name); _DECLARE_DL_SENTINEL(name, usergoo) + +#define wxIMPLEMENT_PLUGGABLE_CLASS(name, basename) \ + wxIMPLEMENT_DYNAMIC_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name) +#define wxIMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2) \ + wxIMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name) +#define wxIMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename) \ + wxIMPLEMENT_ABSTRACT_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name) +#define wxIMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2) \ + wxIMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name) + +#define wxIMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename) \ + wxIMPLEMENT_PLUGGABLE_CLASS(name, basename) +#define wxIMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2) \ + wxIMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2) +#define wxIMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename) \ + wxIMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename) +#define wxIMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2) \ + wxIMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2) + +#define wxCLASSINFO(name) (&name::ms_classInfo) #define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::ms_classInfo) // 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 +// 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( \ - wx_const_cast(wxObject *, wx_static_cast(const wxObject *, \ - wx_const_cast(className *, wx_static_cast(const className *, obj)))), \ + const_cast(static_cast(\ + const_cast(static_cast(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::ms_classInfo) ? (className *)(this) : (className *)0) + (IsKindOf(&className::ms_classInfo) ? (className *)(this) : (className *)0) -#ifdef __WXDEBUG__ -inline void* wxCheckCast(void *ptr) +// 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( ptr, _T("wxStaticCast() used incorrectly") ); - return ptr; + wxASSERT_MSG( wxDynamicCast(ptr, T), "wxStaticCast() used incorrectly" ); + return const_cast(static_cast(ptr)); } -#define wxStaticCast(obj, className) \ - ((className *)wxCheckCast(wxDynamicCast(obj, className))) - -#else // !__WXDEBUG__ -#define wxStaticCast(obj, className) ((className *)(obj)) -#endif // __WXDEBUG__ +#define wxStaticCast(obj, className) wxCheckCast((obj), (className *)NULL) // ---------------------------------------------------------------------------- // set up memory debugging macros @@ -373,7 +180,7 @@ inline void* wxCheckCast(void *ptr) _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT = void operator delete[] (void* buf, wxChar*, int ) */ -#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING +#if wxUSE_MEMORY_TRACING // All compilers get this one #define _WX_WANT_NEW_SIZET_WXCHAR_INT @@ -388,8 +195,8 @@ inline void* wxCheckCast(void *ptr) #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)) +// Only VC++ 6 gets overloaded delete that matches new +#if (defined(__VISUALC__) && (__VISUALC__ >= 1200)) #define _WX_WANT_DELETE_VOID_WXCHAR_INT #endif @@ -405,47 +212,172 @@ inline void* wxCheckCast(void *ptr) #if !defined(__VISUALC__) #define _WX_WANT_ARRAY_DELETE_VOID #endif +#endif // wxUSE_ARRAY_MEMORY_OPERATORS - // Only CodeWarrior 6 or higher - #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400) - #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT - #endif +#endif // wxUSE_MEMORY_TRACING -#endif // wxUSE_ARRAY_MEMORY_OPERATORS +// ---------------------------------------------------------------------------- +// Compatibility macro aliases DECLARE group +// ---------------------------------------------------------------------------- +// deprecated variants _not_ requiring a semicolon after them and without wx prefix. +// (note that also some wx-prefixed macro do _not_ require a semicolon because +// it's not always possible to force the compire to require it) + +#define DECLARE_CLASS_INFO_ITERATORS() wxDECLARE_CLASS_INFO_ITERATORS(); +#define DECLARE_ABSTRACT_CLASS(n) wxDECLARE_ABSTRACT_CLASS(n); +#define DECLARE_DYNAMIC_CLASS_NO_ASSIGN(n) wxDECLARE_DYNAMIC_CLASS_NO_ASSIGN(n); +#define DECLARE_DYNAMIC_CLASS_NO_COPY(n) wxDECLARE_DYNAMIC_CLASS_NO_COPY(n); +#define DECLARE_DYNAMIC_CLASS(n) wxDECLARE_DYNAMIC_CLASS(n); +#define DECLARE_CLASS(n) wxDECLARE_CLASS(n); + +#define DECLARE_PLUGGABLE_CLASS(n) wxDECLARE_PLUGGABLE_CLASS(n); +#define DECLARE_ABSTRACT_PLUGGABLE_CLASS(n) wxDECLARE_ABSTRACT_PLUGGABLE_CLASS(n); +#define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(n,u) wxDECLARE_USER_EXPORTED_PLUGGABLE_CLASS(n,u); +#define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(n,u) wxDECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(n,u); + +// ---------------------------------------------------------------------------- +// wxRefCounter: ref counted data "manager" +// ---------------------------------------------------------------------------- + +class WXDLLIMPEXP_BASE wxRefCounter +{ +public: + wxRefCounter() { 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 ~wxRefCounter() { } + +private: + // our refcount: + int m_count; -#endif // WXDEBUG && wxUSE_MEMORY_TRACING + // It doesn't make sense to copy the reference counted objects, a new ref + // counter should be created for a new object instead and compilation + // errors in the code using wxRefCounter due to the lack of copy ctor often + // indicate a problem, e.g. a forgotten copy ctor implementation somewhere. + wxDECLARE_NO_COPY_CLASS(wxRefCounter); +}; // ---------------------------------------------------------------------------- -// wxObject: the root class of wxWidgets object hierarchy +// wxObjectRefData: ref counted data meant to be stored in wxObject // ---------------------------------------------------------------------------- -class WXDLLIMPEXP_BASE wxObject +typedef wxRefCounter wxObjectRefData; + +// ---------------------------------------------------------------------------- +// wxObjectDataPtr: helper class to avoid memleaks because of missing calls +// to wxObjectRefData::DecRef +// ---------------------------------------------------------------------------- + +template +class wxObjectDataPtr { - DECLARE_ABSTRACT_CLASS(wxObject) +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: - void InitFrom(const wxObject& other); + T *m_ptr; +}; + +// ---------------------------------------------------------------------------- +// wxObject: the root class of wxWidgets object hierarchy +// ---------------------------------------------------------------------------- + +class WXDLLIMPEXP_BASE wxObject +{ + wxDECLARE_ABSTRACT_CLASS(wxObject); public: wxObject() { m_refData = NULL; } virtual ~wxObject() { UnRef(); } wxObject(const wxObject& other) - { - InitFrom(other); - } + { + m_refData = other.m_refData; + if (m_refData) + m_refData->IncRef(); + } wxObject& operator=(const wxObject& other) { if ( this != &other ) { - UnRef(); - InitFrom(other); + Ref(other); } return *this; } - bool IsKindOf(wxClassInfo *info) const; + bool IsKindOf(const wxClassInfo *info) const; // Turn on the correct set of new and delete operators @@ -490,14 +422,20 @@ public: // destroy a reference void UnRef(); + // 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: // 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 + // both methods must be implemented if AllocExclusive() is used, not pure + // virtual only because of the backwards compatibility reasons // create a new m_refData virtual wxObjectRefData *CreateRefData() const; @@ -508,85 +446,53 @@ protected: wxObjectRefData *m_refData; }; -// ---------------------------------------------------------------------------- -// wxObjectRefData: ref counted data meant to be stored in wxObject -// ---------------------------------------------------------------------------- - -class WXDLLIMPEXP_BASE wxObjectRefData -{ - friend class WXDLLIMPEXP_BASE wxObject; - -public: - wxObjectRefData() : m_count(1) { } - virtual ~wxObjectRefData() { } - - int GetRefCount() const { return m_count; } - -private: - int m_count; -}; - - inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo) { return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : NULL; } -#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 +#include "wx/xti2.h" // ---------------------------------------------------------------------------- // 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 wxUSE_DEBUG_NEW_ALWAYS + #define WXDEBUG_NEW new(__TFILE__,__LINE__) -#if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS - #define new new(__TFILE__,__LINE__) -#endif + #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 -#endif // _WX_OBJECTH__ +// ---------------------------------------------------------------------------- +// Compatibility macro aliases IMPLEMENT group +// ---------------------------------------------------------------------------- +// deprecated variants _not_ requiring a semicolon after them and without wx prefix. +// (note that also some wx-prefixed macro do _not_ require a semicolon because +// it's not always possible to force the compire to require it) + +#define IMPLEMENT_DYNAMIC_CLASS(n,b) wxIMPLEMENT_DYNAMIC_CLASS(n,b) +#define IMPLEMENT_DYNAMIC_CLASS2(n,b1,b2) wxIMPLEMENT_DYNAMIC_CLASS2(n,b1,b2) +#define IMPLEMENT_ABSTRACT_CLASS(n,b) wxIMPLEMENT_ABSTRACT_CLASS(n,b) +#define IMPLEMENT_ABSTRACT_CLASS2(n,b1,b2) wxIMPLEMENT_ABSTRACT_CLASS2(n,b1,b2) +#define IMPLEMENT_CLASS(n,b) wxIMPLEMENT_CLASS(n,b) +#define IMPLEMENT_CLASS2(n,b1,b2) wxIMPLEMENT_CLASS2(n,b1,b2) + +#define IMPLEMENT_PLUGGABLE_CLASS(n,b) wxIMPLEMENT_PLUGGABLE_CLASS(n,b) +#define IMPLEMENT_PLUGGABLE_CLASS2(n,b,b2) wxIMPLEMENT_PLUGGABLE_CLASS2(n,b,b2) +#define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(n,b) wxIMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(n,b) +#define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(n,b,b2) wxIMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(n,b,b2) +#define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(n,b) wxIMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(n,b) +#define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(n,b,b2) wxIMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(n,b,b2) +#define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(n,b) wxIMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(n,b) +#define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(n,b,b2) wxIMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(n,b,b2) + +#define CLASSINFO(n) wxCLASSINFO(n) + +#endif // _WX_OBJECTH__