///////////////////////////////////////////////////////////////////////////// // Name: 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 // (c) 2001 Ron Lee // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #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; #if wxUSE_DYNAMIC_CLASSES // ---------------------------------------------------------------------------- // 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 // ---------------------------------------------------------------------------- // wxClassInfo // ---------------------------------------------------------------------------- typedef wxObject *(*wxObjectConstructorFn)(void); class WXDLLEXPORT wxClassInfo { 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(); public: 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 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; static wxHashTable *sm_classTable; }; WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *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) DECLARE_DYNAMIC_CLASS(name) #define DECLARE_CLASS(name) DECLARE_DYNAMIC_CLASS(name) // ----------------------------------- // 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); // 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); // ----------------------------------- // for abstract classes // ----------------------------------- // 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() { \ wxDLManifestEntry *e = (wxDLManifestEntry*) wxDLManifestEntry::ms_classes.Get(#name); \ if( e != 0 ) { e->RefObj(); } \ } \ name::name##PluginSentinel::~##name##PluginSentinel() { \ wxDLManifestEntry *e = (wxDLManifestEntry*) wxDLManifestEntry::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 // !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 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 #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 #include #endif #endif // ---------------------------------------------------------------------------- // wxObject // ---------------------------------------------------------------------------- class WXDLLEXPORT wxObjectRefData; class WXDLLEXPORT wxObject { DECLARE_ABSTRACT_CLASS(wxObject) public: wxObject() : m_refData(0) {} virtual ~wxObject() { UnRef(); } 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); #endif // VC++ 6.0 #if defined(__VISUALC__) && (__VISUALC__ >= 1200) 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 = 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 new[] (size_t size) { return operator new[] ( size, 0, 0 ) ; } void operator delete[] (void *buf); #endif #endif // Debug & memory tracing #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); // destroy a reference void UnRef(); inline wxObjectRefData *GetRefData() const { return m_refData; } inline void SetRefData(wxObjectRefData *data) { m_refData = data; } protected: wxObjectRefData *m_refData; }; class WXDLLEXPORT wxObjectRefData { friend class wxObject; public: wxObjectRefData() : m_count(1) {} virtual ~wxObjectRefData() {} 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__) #endif #else #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 defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS #define new new(__TFILE__,__LINE__) #endif #endif // _WX_OBJECTH__ // vi:sts=4:sw=4:et