// Name: object.h
// Purpose: wxObject class, plus run-time type information macros
// Author: Julian Smart
-// Modified by:
+// Modified by: Ron Lee
// Created: 01/02/97
// RCS-ID: $Id$
-// Copyright: (c) Julian Smart and Markus Holzem
+// Copyright: (c) 1997 Julian Smart and Markus Holzem
+// (c) 2001 Ron Lee <ron@debian.org>
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#pragma interface "object.h"
#endif
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
#include "wx/defs.h"
#include "wx/memory.h"
#if wxUSE_DYNAMIC_CLASSES
-// #ifdef __GNUWIN32__
+// ----------------------------------------------------------------------------
+// conditional compilation
+// ----------------------------------------------------------------------------
+
#ifdef GetClassName
#undef GetClassName
#endif
#ifdef GetClassInfo
#undef GetClassInfo
#endif
-// #endif
class WXDLLEXPORT wxClassInfo;
-class WXDLLEXPORT wxInputStream;
-class WXDLLEXPORT wxOutputStream;
-class WXDLLEXPORT wxObjectInputStream;
-class WXDLLEXPORT wxObjectOutputStream;
class WXDLLEXPORT wxHashTable;
-class WXDLLEXPORT wxObject_Serialize;
-#if wxUSE_IOSTREAMH
- // N.B. BC++ doesn't have istream.h, ostream.h
-# include <iostream.h>
-#else
-# include <ostream>
-# if defined(__VISUALC__) || defined(__MWERKS__)
- using namespace std;
-# endif
+#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT)
+#include "wx/ioswrap.h"
#endif
-/*
- * Dynamic object system declarations
- */
-typedef wxObject * (*wxObjectConstructorFn) (void);
+// ----------------------------------------------------------------------------
+// wxClassInfo
+// ----------------------------------------------------------------------------
+
+typedef wxObject *(*wxObjectConstructorFn)(void);
class WXDLLEXPORT wxClassInfo
{
- public:
- wxClassInfo(wxChar *cName, wxChar *baseName1, wxChar *baseName2, int sz, wxObjectConstructorFn fn);
-
- wxObject *CreateObject(void);
+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();
- inline wxChar *GetClassName(void) const { return m_className; }
- inline wxChar *GetBaseClassName1(void) const { return m_baseClassName1; }
- inline wxChar *GetBaseClassName2(void) const { return m_baseClassName2; }
- inline wxClassInfo* GetBaseClass1() const { return m_baseInfo1; }
- inline wxClassInfo* GetBaseClass2() const { return m_baseInfo2; }
- inline int GetSize(void) const { return m_objectSize; }
- inline wxObjectConstructorFn GetConstructor() const { return m_objectConstructor; }
- static inline wxClassInfo* GetFirst() { return sm_first; }
- inline wxClassInfo* GetNext() const { return m_next; }
- bool IsKindOf(wxClassInfo *info) const;
+public:
+ const wxChar *m_className;
+ const wxChar *m_baseClassName1;
+ const wxChar *m_baseClassName2;
+ int m_objectSize;
+ wxObjectConstructorFn m_objectConstructor;
- static wxClassInfo *FindClass(wxChar *c);
+ // Pointers to base wxClassInfos: set in InitializeClasses
- // Initializes parent pointers and hash table for fast searching.
- static void InitializeClasses(void);
+ const wxClassInfo *m_baseInfo1;
+ const wxClassInfo *m_baseInfo2;
- // Cleans up hash table used for fast searching.
- static void CleanUpClasses(void);
+ // class info object live in a linked list:
+ // pointers to its head and the next element in it
-public:
- wxChar* m_className;
- wxChar* m_baseClassName1;
- wxChar* m_baseClassName2;
- int m_objectSize;
- wxObjectConstructorFn m_objectConstructor;
+ static wxClassInfo *sm_first;
+ wxClassInfo *m_next;
- // Pointers to base wxClassInfos: set in InitializeClasses
- // called from wx_main.cc
- wxClassInfo* m_baseInfo1;
- wxClassInfo* m_baseInfo2;
+ // FIXME: this should be private (currently used directly by way too
+ // many clients)
+ static wxHashTable *sm_classTable;
- static wxClassInfo* sm_first;
- wxClassInfo* m_next;
-
- static wxHashTable* sm_classTable;
+private:
+ // InitializeClasses() helper
+ static wxClassInfo *GetBaseByName(const wxChar *name);
};
-WXDLLEXPORT wxObject* wxCreateDynamicObject(const wxChar *name);
+WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name);
-#if wxUSE_SERIAL
-WXDLLEXPORT wxObject* wxCreateStoredObject( wxInputStream& stream );
-#endif
+// ----------------------------------------------------------------------------
+// Dynamic class macros
+// ----------------------------------------------------------------------------
-#define DECLARE_DYNAMIC_CLASS(name) \
- public:\
- static wxClassInfo sm_class##name;\
- wxClassInfo *GetClassInfo() const \
+#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
-//////
+// -----------------------------------
+// for concrete classes
+// -----------------------------------
+
+ // Single inheritance with one base class
-// Single inheritance with one base class
-#define IMPLEMENT_DYNAMIC_CLASS(name, basename) \
-wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name(void) \
- { return new name; }\
- wxClassInfo name::sm_class##name((wxChar *) _T(#name), (wxChar *) _T(#basename), (wxChar *) NULL, (int) sizeof(name), (wxObjectConstructorFn) wxConstructorFor##name);
+#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(void) \
- { return new name; }\
- wxClassInfo name::sm_class##name((wxChar *) _T(#name), (wxChar *) _T(#basename1), (wxChar *) _T(#basename2), (int) sizeof(name), (wxObjectConstructorFn) wxConstructorFor##name);
+ // Multiple inheritance with two base classes
-//////
-////// for abstract 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);
-// Single inheritance with one base class
-#define IMPLEMENT_ABSTRACT_CLASS(name, basename) \
- wxClassInfo name::sm_class##name((wxChar *) _T(#name), (wxChar *) _T(#basename), \
- (wxChar *) NULL, (int) sizeof(name), (wxObjectConstructorFn) NULL);
+// -----------------------------------
+// for abstract classes
+// -----------------------------------
-// Multiple inheritance with two base classes
-#define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) \
- wxClassInfo name::sm_class##name((wxChar *) _T(#name), (wxChar *) _T(#basename1), \
- (wxChar *) _T(#basename2), (int) sizeof(name), (wxObjectConstructorFn) NULL);
+ // 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() { \
+ wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name); \
+ if( e != 0 ) { e->RefObj(); } \
+ } \
+ name::name##PluginSentinel::~name##PluginSentinel() { \
+ wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::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
+#else // !wxUSE_DYNAMIC_CLASSES
+
+ // No dynamic class system: so stub out the macros
-// 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_CLASS IMPLEMENT_ABSTRACT_CLASS
#define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
-#endif
+#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)
+ // Just seems a bit nicer-looking (pretend it's not a macro)
+
#define wxIsKindOf(obj, className) obj->IsKindOf(&className::sm_class##className)
-// Unfortunately Borland seems to need this include.
-#ifdef __BORLANDC__
+ // 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 <iostream.h>
#else
#endif
#endif
+
+// ----------------------------------------------------------------------------
+// wxObject
+// ----------------------------------------------------------------------------
+
class WXDLLEXPORT wxObjectRefData;
class WXDLLEXPORT wxObject
{
- public:
+DECLARE_ABSTRACT_CLASS(wxObject)
- // This is equivalent to using the macro DECLARE_ABSTRACT_CLASS
- static wxClassInfo sm_classwxObject;
+public:
+ wxObject() : m_refData(0) {}
+ virtual ~wxObject() { UnRef(); }
- wxObject(void);
- virtual ~wxObject(void);
+ bool IsKindOf(wxClassInfo *info) const;
- virtual wxClassInfo *GetClassInfo(void) const { return &sm_classwxObject; }
+#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
+ void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0);
- bool IsKindOf(wxClassInfo *info) const;
+#ifndef __VISAGECPP__
+ void operator delete (void * buf);
+#elif __DEBUG_ALLOC__
+ void operator delete (void *buf, const char *_fname, size_t _line);
+#endif
-#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
- void * operator new (size_t size, wxChar * fileName = NULL, int lineNum = 0);
- void operator delete (void * buf);
+ // VC++ 6.0
-// VC++ 6.0
#if defined(__VISUALC__) && (__VISUALC__ >= 1200)
- void operator delete(void *buf, char*, int);
+ 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 = NULL, int lineNum = 0);
- void operator delete[] (void * buf);
+ 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 delete[] (void * buf);
+ 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 defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT
- virtual void Dump(ostream& str);
-#endif
-#if wxUSE_SERIAL
- virtual void StoreObject( wxObjectOutputStream &stream );
- virtual void LoadObject( wxObjectInputStream &stream );
+#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);
+ // ref counted data handling methods
+
+ // get/set
+ wxObjectRefData *GetRefData() const { return m_refData; }
+ void SetRefData(wxObjectRefData *data) { m_refData = data; }
- // destroy a reference
- void UnRef(void);
+ // make a 'clone' of the object
+ void Ref(const wxObject& clone);
- inline wxObjectRefData *GetRefData(void) const { return m_refData; }
- inline void SetRefData(wxObjectRefData *data) { m_refData = data; }
+ // destroy a reference
+ void UnRef();
protected:
- wxObjectRefData* m_refData;
-#if wxUSE_SERIAL
- wxObject_Serialize* m_serialObj;
-#endif
-};
+ // 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;
-/*
- * wxObjectData
- */
+ // create a new m_refData initialized with the given one
+ virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
+
+ wxObjectRefData *m_refData;
+};
-class WXDLLEXPORT wxObjectRefData {
+class WXDLLEXPORT wxObjectRefData
+{
friend class wxObject;
public:
- wxObjectRefData(void);
- virtual ~wxObjectRefData(void);
+ wxObjectRefData() : m_count(1) {}
+ virtual ~wxObjectRefData() {}
- inline int GetRefCount(void) const { return m_count; }
+ 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__)
#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__)
#endif
-#endif
- // _WX_OBJECTH__
-
+#endif // _WX_OBJECTH__
+// vi:sts=4:sw=4:et
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