X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/aa1f2541b616bee54a237c256758b0b320765828..78ce938eb8d3c9bca866802151ed2fc6da2bf945:/include/wx/object.h diff --git a/include/wx/object.h b/include/wx/object.h index 11ffa2b356..dfb88a48c6 100644 --- a/include/wx/object.h +++ b/include/wx/object.h @@ -13,15 +13,10 @@ #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; @@ -38,15 +33,6 @@ class WXDLLIMPEXP_BASE wxObject; // 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; @@ -78,7 +64,8 @@ public: ~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 @@ -111,7 +98,6 @@ public: // Cleans up hash table used for fast searching. wxDEPRECATED( static void CleanUpClasses() ); #endif - static void CleanUp(); public: const wxChar *m_className; @@ -156,48 +142,59 @@ inline void wxClassInfo::CleanUpClasses() {} // 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_ABSTRACT_CLASS(name) \ + public: \ + static wxClassInfo ms_classInfo; \ + virtual wxClassInfo *GetClassInfo() const; -#define DECLARE_DYNAMIC_CLASS_NO_ASSIGN(name) \ - DECLARE_NO_ASSIGN_CLASS(name) \ +#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) \ +#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_DYNAMIC_CLASS(name) \ + DECLARE_ABSTRACT_CLASS(name) \ + static wxObject* wxCreateObject(); + #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), \ + (wxObjectConstructorFn) 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* name::wxCreateObject() \ - { return new name; } \ - wxClassInfo name::ms_classInfo(wxT(#name), \ - &basename::ms_classInfo, NULL, \ - (int) sizeof(name), \ - (wxObjectConstructorFn) name::wxCreateObject); +#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* name::wxCreateObject() \ - { return new name; } \ - wxClassInfo name::ms_classInfo(wxT(#name), \ - &basename1::ms_classInfo, \ - &basename2::ms_classInfo, \ - (int) sizeof(name), \ - (wxObjectConstructorFn) name::wxCreateObject); +#define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) \ + wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, \ + name::wxCreateObject) \ + wxObject* name::wxCreateObject() \ + { return new name; } // ----------------------------------- // for abstract classes @@ -205,19 +202,13 @@ inline void wxClassInfo::CleanUpClasses() {} // 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); +#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::ms_classInfo(wxT(#name), \ - &basename1::ms_classInfo, \ - &basename2::ms_classInfo, \ - (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 @@ -299,7 +290,11 @@ name##PluginSentinel m_pluginsentinel; // 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 *, \ @@ -309,7 +304,7 @@ name##PluginSentinel m_pluginsentinel; // 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) @@ -321,7 +316,8 @@ inline void* wxCheckCast(void *ptr) ((className *)wxCheckCast(wxDynamicCast(obj, className))) #else // !__WXDEBUG__ -#define wxStaticCast(obj, className) ((className *)(obj)) +#define wxStaticCast(obj, className) \ + wx_const_cast(className *, wx_static_cast(const className *, obj)) #endif // __WXDEBUG__ @@ -381,7 +377,25 @@ inline void* wxCheckCast(void *ptr) #endif // wxUSE_ARRAY_MEMORY_OPERATORS -#endif // WXDEBUG && wxUSE_MEMORY_TRACING +#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING + +// ---------------------------------------------------------------------------- +// 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; +}; // ---------------------------------------------------------------------------- // wxObject: the root class of wxWidgets object hierarchy @@ -391,24 +405,22 @@ class WXDLLIMPEXP_BASE wxObject { DECLARE_ABSTRACT_CLASS(wxObject) -private: - void InitFrom(const wxObject& other); - public: wxObject() { m_refData = NULL; } virtual ~wxObject() { UnRef(); } wxObject(const wxObject& other) - { - InitFrom(other); - } + { + m_refData = other.m_refData; + if (m_refData) + m_refData->m_count++; + } wxObject& operator=(const wxObject& other) { if ( this != &other ) { - UnRef(); - InitFrom(other); + Ref(other); } return *this; } @@ -458,13 +470,16 @@ public: // destroy a reference void UnRef(); + // Make sure this object has only one reference + void UnShare() { AllocExclusive(); } + 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 + // both methods must be implemented if AllocExclusive() is used, not pure virtual // only because of the backwards compatibility reasons // create a new m_refData @@ -476,25 +491,6 @@ 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; @@ -507,7 +503,7 @@ class WXDLLIMPEXP_BASE wxDynamicObject : public wxObject public: // instantiates this object with an instance of its superclass wxDynamicObject(wxObject* superClassInstance, const wxDynamicClassInfo *info) ; - ~wxDynamicObject(); + virtual ~wxDynamicObject(); void SetProperty (const wxChar *propertyName, const wxxVariant &value); wxxVariant GetProperty (const wxChar *propertyName) const ; @@ -563,5 +559,4 @@ private : #include "wx/msw/msvcrt.h" #endif -#endif // _WX_OBJECTH__ - +#endif // _WX_OBJECTH__