/////////////////////////////////////////////////////////////////////////////
-// Name: object.h
+// Name: wx/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
-// Licence: wxWindows licence
+// Copyright: (c) 1997 Julian Smart
+// (c) 2001 Ron Lee <ron@debian.org>
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_OBJECTH__
#define _WX_OBJECTH__
-#ifdef __GNUG__
-#pragma interface "object.h"
-#endif
-
-#include "wx/defs.h"
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxObject;
+#include "wx/memory.h"
-#if USE_DYNAMIC_CLASSES
+class WXDLLIMPEXP_FWD_BASE wxObject;
+class WXDLLIMPEXP_FWD_BASE wxString;
-#ifdef __GNUWIN32__
-#ifdef GetClassName
-#undef GetClassName
-#endif
+#ifndef wxUSE_EXTENDED_RTTI
+#define wxUSE_EXTENDED_RTTI 0
#endif
-class WXDLLEXPORT wxClassInfo;
-class WXDLLIMPORT ostream;
-class WXDLLEXPORT wxInputStream;
-class WXDLLEXPORT wxObjectInputStream;
-class WXDLLEXPORT wxObjectOutputStream;
-class WXDLLEXPORT wxHashTable;
-class WXDLLEXPORT wxObject_Serialize;
+#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
-/*
- * Dynamic object system declarations
- */
+// ----------------------------------------------------------------------------
+// conditional compilation
+// ----------------------------------------------------------------------------
+
+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;
-typedef wxObject * (*wxObjectConstructorFn) (void);
+// ----------------------------------------------------------------------------
+// wxClassInfo
+// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxClassInfo
+typedef wxObject *(*wxObjectConstructorFn)(void);
+
+class WXDLLIMPEXP_BASE wxClassInfo
{
- public:
- char *className;
- char *baseClassName1;
- char *baseClassName2;
- int objectSize;
- wxObjectConstructorFn objectConstructor;
-
- // Pointers to base wxClassInfos: set in InitializeClasses
- // called from wx_main.cc
- wxClassInfo *baseInfo1;
- wxClassInfo *baseInfo2;
-
- static wxClassInfo *first;
- wxClassInfo *next;
-
- static wxHashTable classTable;
-
- wxClassInfo(char *cName, char *baseName1, char *baseName2, int sz, wxObjectConstructorFn fn);
-
- wxObject *CreateObject(void);
-
- inline char *GetClassName(void) const { return className; }
- inline char *GetBaseClassName1(void) const { return baseClassName1; }
- inline char *GetBaseClassName2(void) const { return baseClassName2; }
- inline int GetSize(void) const { return objectSize; }
- bool IsKindOf(wxClassInfo *info);
-
- static wxClassInfo *FindClass(char *c);
- // Initializes parent pointers for fast searching.
- static void InitializeClasses(void);
+ friend class WXDLLIMPEXP_FWD_BASE wxObject;
+ friend WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxString& name);
+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() 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_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 wxString& 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) ) );
+ }
+
+ DECLARE_CLASS_INFO_ITERATORS()
+private:
+ const wxChar *m_className;
+ int m_objectSize;
+ wxObjectConstructorFn m_objectConstructor;
+
+ // Pointers to base wxClassInfos
+
+ 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;
+
+protected:
+ // registers the class
+ void Register();
+ void Unregister();
+
+ DECLARE_NO_COPY_CLASS(wxClassInfo)
};
-wxObject* WXDLLEXPORT wxCreateDynamicObject(char *name);
+WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxString& name);
-#ifdef USE_SERIAL
-wxObject* WXDLLEXPORT wxCreateStoredObject( wxInputStream& stream );
-#endif
+// ----------------------------------------------------------------------------
+// Dynamic class macros
+// ----------------------------------------------------------------------------
-#define DECLARE_DYNAMIC_CLASS(name) \
- public:\
- static wxClassInfo class##name;\
- wxClassInfo *GetClassInfo() \
- { return &name::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)
-//////
-////// for concrete classes
-//////
-// Single inheritance with one base class
-#define IMPLEMENT_DYNAMIC_CLASS(name, basename) \
-wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name(void) \
- { return new name; }\
- wxClassInfo name::class##name((char *) #name, (char *) #basename, (char *) NULL, (int) sizeof(name), (wxObjectConstructorFn) wxConstructorFor##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; }
-// Multiple inheritance with two base classes
-#define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) \
-wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name(void) \
- { return new name; }\
- wxClassInfo name::class##name((char *) #name, (char *) #basename1, (char *) #basename2, (int) sizeof(name), (wxObjectConstructorFn) wxConstructorFor##name);
+#define wxIMPLEMENT_CLASS_COMMON1(name, basename, func) \
+ wxIMPLEMENT_CLASS_COMMON(name, basename, NULL, func)
-//////
-////// for abstract classes
-//////
+#define wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, func) \
+ wxIMPLEMENT_CLASS_COMMON(name, basename1, &basename2::ms_classInfo, func)
-// Single inheritance with one base class
-#define IMPLEMENT_ABSTRACT_CLASS(name, basename) \
- wxClassInfo name::class##name((char *) #name, (char *) #basename, \
- (char *) NULL, (int) sizeof(name), (wxObjectConstructorFn) NULL);
+// -----------------------------------
+// for concrete classes
+// -----------------------------------
-// Multiple inheritance with two base classes
-#define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) \
- wxClassInfo name::class##name((char *) #name, (char *) #basename1, (char *) #basename2, (int) sizeof(name), (wxObjectConstructorFn) NULL);
+ // Single inheritance with one base class
+#define IMPLEMENT_DYNAMIC_CLASS(name, basename) \
+ wxIMPLEMENT_CLASS_COMMON1(name, basename, name::wxCreateObject) \
+ wxObject* name::wxCreateObject() \
+ { return new name; }
-#define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
-#define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
+ // Multiple inheritance with two base classes
+#define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) \
+ wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, \
+ name::wxCreateObject) \
+ wxObject* name::wxCreateObject() \
+ { return new name; }
-#define CLASSINFO(name) (&name::class##name)
+// -----------------------------------
+// for abstract classes
+// -----------------------------------
-#else
+ // Single inheritance with one base class
+
+#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) \
+ wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, NULL)
-// 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
-#endif
+#endif // !wxUSE_EXTENDED_RTTI
+
+
+// -----------------------------------
+// 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 IS_KIND_OF(obj, className) obj->IsKindOf(&className::class##className)
+#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, WXDLLIMPEXP_CORE)
+#define DECLARE_ABSTRACT_PLUGGABLE_CLASS(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::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)
+
+// 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)))), \
+ &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)
+
+#ifdef __WXDEBUG__
+inline void* wxCheckCast(void *ptr)
+{
+ wxASSERT_MSG( ptr, _T("wxStaticCast() used incorrectly") );
+ return ptr;
+}
+#define wxStaticCast(obj, className) \
+ ((className *)wxCheckCast(wxDynamicCast(obj, className)))
-// Unfortunately Borland seems to need this include.
-#ifdef __BORLANDC__
-#if USE_IOSTREAMH
-#include <iostream.h>
-#else
-#include <iostream>
-#endif
-#endif
+#else // !__WXDEBUG__
+#define wxStaticCast(obj, className) \
+ wx_const_cast(className *, wx_static_cast(const className *, obj))
-class WXDLLEXPORT wxObjectRefData;
+#endif // __WXDEBUG__
-class WXDLLEXPORT wxObject
-{
- public:
+// ----------------------------------------------------------------------------
+// set up memory debugging macros
+// ----------------------------------------------------------------------------
- // This is equivalent to using the macro DECLARE_ABSTRACT_CLASS
- static wxClassInfo classwxObject;
+/*
+ Which new/delete operator variants do we want?
- wxObject(void);
- virtual ~wxObject(void);
+ _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 )
+*/
- virtual wxClassInfo *GetClassInfo(void) { return &classwxObject; }
+#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
- bool IsKindOf(wxClassInfo *info);
+// All compilers get this one
+#define _WX_WANT_NEW_SIZET_WXCHAR_INT
-#if WXDEBUG && USE_MEMORY_TRACING
- void * operator new (size_t size, char * fileName = NULL, int lineNum = 0);
- void operator delete (void * buf);
-
- // Cause problems for VC++
-#ifndef _MSC_VER
- void * operator new[] (size_t size, char * fileName = NULL, int lineNum = 0);
- void operator delete[] (void * buf);
+// Everyone except Visage gets the next one
+#ifndef __VISAGECPP__
+ #define _WX_WANT_DELETE_VOID
#endif
+// Only visage gets this one under the correct circumstances
+#if defined(__VISAGECPP__) && __DEBUG_ALLOC__
+ #define _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
#endif
-#if WXDEBUG || USE_DEBUG_CONTEXT
- virtual void Dump(ostream& str);
+// 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
-#ifdef USE_SERIAL
- virtual void StoreObject( wxObjectOutputStream &stream );
- virtual void LoadObject( wxObjectInputStream &stream );
-#endif
+// Now see who (if anyone) gets the array memory operators
+#if wxUSE_ARRAY_MEMORY_OPERATORS
- // make a 'clone' of the object
- void Ref(const wxObject& clone);
+ // Everyone except Visual C++ (cause problems for VC++ - crashes)
+ #if !defined(__VISUALC__)
+ #define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
+ #endif
- // destroy a reference
- void UnRef(void);
+ // Everyone except Visual C++ (cause problems for VC++ - crashes)
+ #if !defined(__VISUALC__)
+ #define _WX_WANT_ARRAY_DELETE_VOID
+ #endif
- inline wxObjectRefData *GetRefData(void) const { return m_refData; }
- inline void SetRefData(wxObjectRefData *data) { m_refData = data; }
+ // Only CodeWarrior 6 or higher
+ #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400)
+ #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
+ #endif
-protected:
- wxObjectRefData *m_refData;
-#ifdef USE_STORABLE_CLASSES
- wxObject_Serialize *m_serialObj;
-#endif
-};
+#endif // wxUSE_ARRAY_MEMORY_OPERATORS
-/*
- * wxObjectData
- */
+#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
-class WXDLLEXPORT wxObjectRefData {
+// ----------------------------------------------------------------------------
+// wxObjectRefData: ref counted data meant to be stored in wxObject
+// ----------------------------------------------------------------------------
- friend class wxObject;
+class WXDLLIMPEXP_BASE wxObjectRefData
+{
+ friend class WXDLLIMPEXP_FWD_BASE wxObject;
public:
- wxObjectRefData(void);
- virtual ~wxObjectRefData(void);
+ 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() { }
- inline int GetRefCount(void) const { return m_count; }
private:
+ // our refcount:
int m_count;
};
-#if WXDEBUG && USE_GLOBAL_MEMORY_OPERATORS
-#ifndef WXDEBUG_NEW
-#define WXDEBUG_NEW new(__FILE__,__LINE__)
+// ----------------------------------------------------------------------------
+// wxObjectDataPtr: helper class to avoid memleaks because of missing calls
+// to wxObjectRefData::DecRef
+// ----------------------------------------------------------------------------
+
+template <class T>
+class wxObjectDataPtr
+{
+public:
+ typedef T element_type;
+
+ wxEXPLICIT wxObjectDataPtr(T *ptr = NULL) : m_ptr(ptr) {}
+
+ // copy ctor
+ wxObjectDataPtr(const wxObjectDataPtr<T> &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<T>::*unspecified_bool_type)() const;
+ operator unspecified_bool_type() const
+ {
+ return m_ptr ? &wxObjectDataPtr<T>::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;
+};
+
+// ----------------------------------------------------------------------------
+// wxObject: the root class of wxWidgets object hierarchy
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxObject
+{
+ DECLARE_ABSTRACT_CLASS(wxObject)
+
+public:
+ wxObject() { m_refData = NULL; }
+ virtual ~wxObject() { UnRef(); }
+
+ wxObject(const wxObject& other)
+ {
+ m_refData = other.m_refData;
+ if (m_refData)
+ m_refData->m_count++;
+ }
+
+ wxObject& operator=(const wxObject& other)
+ {
+ if ( this != &other )
+ {
+ Ref(other);
+ }
+ return *this;
+ }
+
+ bool IsKindOf(wxClassInfo *info) const;
+
+
+ // 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
+
+#ifdef _WX_WANT_DELETE_VOID
+ void operator delete ( void * buf );
+#endif
+
+#ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
+ void operator delete ( void *buf, const char *_fname, size_t _line );
+#endif
+
+#ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT
+ void operator delete ( void *buf, const wxChar*, int );
+#endif
+
+#ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
+ void *operator new[] ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
#endif
-#define new WXDEBUG_NEW
+
+#ifdef _WX_WANT_ARRAY_DELETE_VOID
+ void operator delete[] ( void *buf );
#endif
+#ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
+ void operator delete[] (void* buf, const wxChar*, int );
#endif
- // _WX_OBJECTH__
+ // 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
+ 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 AllocExclusive() is used, not pure
+ // virtual only because of the backwards compatibility reasons
+
+ // create a new m_refData
+ virtual wxObjectRefData *CreateRefData() const;
+
+ // create a new m_refData initialized with the given one
+ virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
+
+ wxObjectRefData *m_refData;
+};
+
+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_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
+ wxDynamicClassInfo *nonconst = wx_const_cast(wxDynamicClassInfo *, m_classInfo);
+ return wx_static_cast(wxClassInfo *, nonconst);
+#endif
+ }
+
+ 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
+// ----------------------------------------------------------------------------
+// more debugging macros
+// ----------------------------------------------------------------------------
+
+// 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.
+
+#ifdef __WXDEBUG__
+ #define WXDEBUG_NEW new(__TFILE__,__LINE__)
+
+ #if wxUSE_DEBUG_NEW_ALWAYS
+ #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
+#else // !__WXDEBUG__
+ #define WXDEBUG_NEW new
+#endif // __WXDEBUG__/!__WXDEBUG__
+
+#endif // _WX_OBJECTH__
projects / wxWidgets.git / blobdiff