/////////////////////////////////////////////////////////////////////////////
-// Name: object.h
+// Name: wx/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
+// Copyright: (c) 1997 Julian Smart
// (c) 2001 Ron Lee <ron@debian.org>
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_OBJECTH__
#define _WX_OBJECTH__
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(__APPLE__)
#pragma interface "object.h"
#endif
#include "wx/defs.h"
#include "wx/memory.h"
-class WXDLLEXPORT wxObject;
+class WXDLLIMPEXP_BASE wxObject;
#if wxUSE_DYNAMIC_CLASSES
// conditional compilation
// ----------------------------------------------------------------------------
+// this shouldn't be needed any longer as <wx/msw/private.h> does it but it
+// doesn't hurt neither
#ifdef GetClassName
#undef GetClassName
#endif
#undef GetClassInfo
#endif
-class WXDLLEXPORT wxClassInfo;
-class WXDLLEXPORT wxHashTable;
-
-#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT)
-#include "wx/ioswrap.h"
-#endif
-
+class WXDLLIMPEXP_BASE wxClassInfo;
+class WXDLLIMPEXP_BASE wxHashTable;
+class WXDLLIMPEXP_BASE wxObjectRefData;
// ----------------------------------------------------------------------------
// wxClassInfo
typedef wxObject *(*wxObjectConstructorFn)(void);
-class WXDLLEXPORT wxClassInfo
+class WXDLLIMPEXP_BASE wxClassInfo
{
public:
wxClassInfo( const wxChar *className,
, m_baseInfo1(0)
, m_baseInfo2(0)
, m_next(sm_first)
- { sm_first = this; }
+ { sm_first = this; }
+
+ ~wxClassInfo();
wxObject *CreateObject() { return m_objectConstructor ? (*m_objectConstructor)() : 0; }
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.
static wxClassInfo *sm_first;
wxClassInfo *m_next;
+ // FIXME: this should be private (currently used directly by way too
+ // many clients)
static wxHashTable *sm_classTable;
-};
-WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name);
+private:
+ // InitializeClasses() helper
+ static wxClassInfo *GetBaseByName(const wxChar *name);
+
+ DECLARE_NO_COPY_CLASS(wxClassInfo)
+};
+WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxChar *name);
// ----------------------------------------------------------------------------
// Dynamic class macros
// Single inheritance with one base class
#define IMPLEMENT_DYNAMIC_CLASS(name, basename) \
- wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name() \
+ wxObject* wxConstructorFor##name() \
{ return new name; } \
wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename), \
0, (int) sizeof(name), \
// Multiple inheritance with two base classes
#define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) \
- wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name() \
+ wxObject* wxConstructorFor##name() \
{ return new name; } \
wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename1), \
wxT(#basename2), (int) sizeof(name), \
#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)
- // to be replaced by dynamic_cast<> in the future
-
+// 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.
+ ((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)
+#ifdef HAVE_CONST_CAST
+#define wxConstCast(obj, className) const_cast<className *>(obj)
+#else
#define wxConstCast(obj, className) ((className *)(obj))
+#endif
#ifdef __WXDEBUG__
#endif // __WXDEBUG__
+// ----------------------------------------------------------------------------
+// set up memory debugging macros
+// ----------------------------------------------------------------------------
- // Unfortunately Borland seems to need this include.
+/*
+ Which new/delete operator variants do we want?
-#if wxUSE_STD_IOSTREAM \
- && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) \
- && defined(__BORLANDC__)
-#if wxUSE_IOSTREAMH
-#include <iostream.h>
-#else
-#include <iostream>
+ _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 )
+*/
+
+#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
+
+// All compilers get this one
+#define _WX_WANT_NEW_SIZET_WXCHAR_INT
+
+// 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
+
+// Only VC++ 6.0 and CodeWarrior compilers get overloaded delete that matches new
+#if ( defined(__VISUALC__) && (__VISUALC__ >= 1200) ) || (defined(__MWERKS__) && (__MWERKS__ >= 0x2400))
+ #define _WX_WANT_DELETE_VOID_WXCHAR_INT
#endif
+// Now see who (if anyone) gets the array memory operators
+#if wxUSE_ARRAY_MEMORY_OPERATORS
+
+ // Everyone except Visual C++ (cause problems for VC++ - crashes)
+ #if !defined(__VISUALC__)
+ #define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
+ #endif
+
+ // Everyone except Visual C++ (cause problems for VC++ - crashes)
+ #if !defined(__VISUALC__)
+ #define _WX_WANT_ARRAY_DELETE_VOID
+ #endif
+
+ // Only CodeWarrior 6 or higher
+ #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400)
+ #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
+ #endif
+
+#endif // wxUSE_ARRAY_MEMORY_OPERATORS
+
+#endif // WXDEBUG && wxUSE_MEMORY_TRACING
+
+#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT)
+// needed by wxObject::Dump
+#include "wx/iosfwrap.h"
+#endif
// ----------------------------------------------------------------------------
-// wxObject
+// wxObject: the root class of wxWindows object hierarchy
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxObjectRefData;
-
-class WXDLLEXPORT wxObject
+class WXDLLIMPEXP_BASE wxObject
{
-DECLARE_ABSTRACT_CLASS(wxObject)
+ DECLARE_ABSTRACT_CLASS(wxObject)
+private:
+ void InitFrom(const wxObject& other);
+
public:
- wxObject() : m_refData(0) {}
+ wxObject() { m_refData = NULL; }
virtual ~wxObject() { UnRef(); }
+
+ wxObject(const wxObject& other)
+ {
+ InitFrom(other);
+ }
+
+ wxObject& operator=(const wxObject& other)
+ {
+ if ( this != &other )
+ {
+ UnRef();
+ InitFrom(other);
+ }
+ return *this;
+ }
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);
+ // 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
- // VC++ 6.0
+#ifdef _WX_WANT_DELETE_VOID
+ void operator delete ( void * buf );
+#endif
-#if defined(__VISUALC__) && (__VISUALC__ >= 1200)
- void operator delete(void *buf, wxChar*, int);
+#ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
+ void operator delete ( void *buf, const char *_fname, size_t _line );
#endif
- // Causes problems for VC++
+#ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT
+ void operator delete ( void *buf, const wxChar*, int );
+#endif
-#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);
+#ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
+ void *operator new[] ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
#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);
+#ifdef _WX_WANT_ARRAY_DELETE_VOID
+ void operator delete[] ( void *buf );
#endif
-#endif // Debug & memory tracing
+#ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
+ void operator delete[] (void* buf, const wxChar*, int );
+#endif
#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT)
virtual void Dump(wxSTD ostream& str);
#endif
- // make a 'clone' of the object
-
+ // 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
-
+ // destroy a reference
void UnRef();
- inline wxObjectRefData *GetRefData() const { return m_refData; }
- inline void SetRefData(wxObjectRefData *data) { m_refData = data; }
-
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
+
+ // 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;
};
+// ----------------------------------------------------------------------------
+// wxObjectRefData: ref counted data meant to be stored in wxObject
+// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxObjectRefData
+class WXDLLIMPEXP_BASE wxObjectRefData
{
- friend class wxObject;
+ friend class WXDLLIMPEXP_BASE wxObject;
public:
- wxObjectRefData() : m_count(1) {}
- virtual ~wxObjectRefData() {}
+ wxObjectRefData() : m_count(1) { }
+ virtual ~wxObjectRefData() { }
+
+ int GetRefCount() 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;
+ return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : NULL;
}
+// ----------------------------------------------------------------------------
+// more debugging macros
+// ----------------------------------------------------------------------------
+
#ifdef __WXDEBUG__
-#ifndef WXDEBUG_NEW
-#define WXDEBUG_NEW new(__TFILE__,__LINE__)
-#endif
-#else
-#define WXDEBUG_NEW new
+ #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.
+// 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__)
+ #define new new(__TFILE__,__LINE__)
#endif
#endif // _WX_OBJECTH__
-// vi:sts=4:sw=4:et
projects / wxWidgets.git / blobdiff