abad53678b
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13352 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
439 lines
15 KiB
C++
439 lines
15 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: object.h
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// Purpose: wxObject class, plus run-time type information macros
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// Author: Julian Smart
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// Modified by: Ron Lee
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// Created: 01/02/97
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// RCS-ID: $Id$
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// Copyright: (c) 1997 Julian Smart and Markus Holzem
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// (c) 2001 Ron Lee <ron@debian.org>
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_OBJECTH__
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#define _WX_OBJECTH__
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#ifdef __GNUG__
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#pragma interface "object.h"
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#endif
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "wx/defs.h"
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#include "wx/memory.h"
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class WXDLLEXPORT wxObject;
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#if wxUSE_DYNAMIC_CLASSES
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// ----------------------------------------------------------------------------
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// conditional compilation
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// ----------------------------------------------------------------------------
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#ifdef GetClassName
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#undef GetClassName
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#endif
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#ifdef GetClassInfo
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#undef GetClassInfo
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#endif
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class WXDLLEXPORT wxClassInfo;
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class WXDLLEXPORT wxHashTable;
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#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT)
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#include "wx/ioswrap.h"
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#endif
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// ----------------------------------------------------------------------------
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// wxClassInfo
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// ----------------------------------------------------------------------------
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typedef wxObject *(*wxObjectConstructorFn)(void);
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class WXDLLEXPORT wxClassInfo
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{
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public:
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wxClassInfo( const wxChar *className,
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const wxChar *baseName1,
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const wxChar *baseName2,
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int size,
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wxObjectConstructorFn ctor )
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: m_className(className)
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, m_baseClassName1(baseName1)
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, m_baseClassName2(baseName2)
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, m_objectSize(size)
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, m_objectConstructor(ctor)
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, m_baseInfo1(0)
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, m_baseInfo2(0)
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, m_next(sm_first)
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{ sm_first = this; }
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wxObject *CreateObject() { return m_objectConstructor ? (*m_objectConstructor)() : 0; }
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const wxChar *GetClassName() const { return m_className; }
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const wxChar *GetBaseClassName1() const { return m_baseClassName1; }
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const wxChar *GetBaseClassName2() const { return m_baseClassName2; }
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const wxClassInfo *GetBaseClass1() const { return m_baseInfo1; }
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const wxClassInfo *GetBaseClass2() const { return m_baseInfo2; }
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int GetSize() const { return m_objectSize; }
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wxObjectConstructorFn GetConstructor() const { return m_objectConstructor; }
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static const wxClassInfo *GetFirst() { return sm_first; }
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const wxClassInfo *GetNext() const { return m_next; }
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static wxClassInfo *FindClass(const wxChar *className);
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// Climb upwards through inheritance hierarchy.
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// Dual inheritance is catered for.
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bool IsKindOf(const wxClassInfo *info) const
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{
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return info != 0 &&
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( info == this ||
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( m_baseInfo1 && m_baseInfo1->IsKindOf(info) ) ||
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( m_baseInfo2 && m_baseInfo2->IsKindOf(info) ) );
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}
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// Initializes parent pointers and hash table for fast searching.
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static void InitializeClasses();
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// Cleans up hash table used for fast searching.
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static void CleanUpClasses();
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public:
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const wxChar *m_className;
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const wxChar *m_baseClassName1;
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const wxChar *m_baseClassName2;
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int m_objectSize;
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wxObjectConstructorFn m_objectConstructor;
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// Pointers to base wxClassInfos: set in InitializeClasses
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const wxClassInfo *m_baseInfo1;
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const wxClassInfo *m_baseInfo2;
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// class info object live in a linked list:
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// pointers to its head and the next element in it
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static wxClassInfo *sm_first;
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wxClassInfo *m_next;
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static wxHashTable *sm_classTable;
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};
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WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name);
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// ----------------------------------------------------------------------------
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// Dynamic class macros
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// ----------------------------------------------------------------------------
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#define DECLARE_DYNAMIC_CLASS(name) \
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public: \
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static wxClassInfo sm_class##name; \
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virtual wxClassInfo *GetClassInfo() const \
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{ return &name::sm_class##name; }
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#define DECLARE_ABSTRACT_CLASS(name) DECLARE_DYNAMIC_CLASS(name)
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#define DECLARE_CLASS(name) DECLARE_DYNAMIC_CLASS(name)
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// -----------------------------------
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// for concrete classes
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// -----------------------------------
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// Single inheritance with one base class
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#define IMPLEMENT_DYNAMIC_CLASS(name, basename) \
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wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name() \
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{ return new name; } \
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wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename), \
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0, (int) sizeof(name), \
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(wxObjectConstructorFn) wxConstructorFor##name);
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// Multiple inheritance with two base classes
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#define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) \
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wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name() \
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{ return new name; } \
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wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename1), \
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wxT(#basename2), (int) sizeof(name), \
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(wxObjectConstructorFn) wxConstructorFor##name);
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// -----------------------------------
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// for abstract classes
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// -----------------------------------
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// Single inheritance with one base class
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#define IMPLEMENT_ABSTRACT_CLASS(name, basename) \
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wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename), \
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0, (int) sizeof(name), (wxObjectConstructorFn) 0);
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// Multiple inheritance with two base classes
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#define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) \
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wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename1), \
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wxT(#basename2), (int) sizeof(name), \
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(wxObjectConstructorFn) 0);
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#define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
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#define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
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// -----------------------------------
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// for pluggable classes
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// -----------------------------------
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// NOTE: this should probably be the very first statement
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// in the class declaration so wxPluginSentinel is
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// the first member initialised and the last destroyed.
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// _DECLARE_DL_SENTINEL(name) wxPluginSentinel m_pluginsentinel;
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#if wxUSE_NESTED_CLASSES
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#define _DECLARE_DL_SENTINEL(name, exportdecl) \
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class exportdecl name##PluginSentinel { \
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private: \
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static const wxString sm_className; \
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public: \
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name##PluginSentinel(); \
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~name##PluginSentinel(); \
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}; \
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name##PluginSentinel m_pluginsentinel;
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#define _IMPLEMENT_DL_SENTINEL(name) \
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const wxString name::name##PluginSentinel::sm_className(#name); \
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name::name##PluginSentinel::name##PluginSentinel() { \
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wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name); \
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if( e != 0 ) { e->RefObj(); } \
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} \
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name::name##PluginSentinel::~name##PluginSentinel() { \
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wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name); \
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if( e != 0 ) { e->UnrefObj(); } \
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}
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#else
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#define _DECLARE_DL_SENTINEL(name)
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#define _IMPLEMENT_DL_SENTINEL(name)
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#endif // wxUSE_NESTED_CLASSES
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#define DECLARE_PLUGGABLE_CLASS(name) \
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DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLEXPORT)
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#define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name) \
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DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLEXPORT)
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#define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo) \
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DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
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#define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo) \
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DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
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#define IMPLEMENT_PLUGGABLE_CLASS(name, basename) \
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IMPLEMENT_DYNAMIC_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
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#define IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2) \
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IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
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#define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
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IMPLEMENT_ABSTRACT_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
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#define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2) \
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IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
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#define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename) \
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IMPLEMENT_PLUGGABLE_CLASS(name, basename)
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#define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2) \
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IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)
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#define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
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IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename)
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#define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2) \
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IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)
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#define CLASSINFO(name) (&name::sm_class##name)
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#else // !wxUSE_DYNAMIC_CLASSES
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// No dynamic class system: so stub out the macros
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#define DECLARE_DYNAMIC_CLASS(name)
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#define DECLARE_ABSTRACT_CLASS(name)
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#define DECLARE_CLASS(name)
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#define IMPLEMENT_DYNAMIC_CLASS(name, basename)
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#define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2)
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#define IMPLEMENT_ABSTRACT_CLASS(name, basename)
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#define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2)
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#define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
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#define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
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#define DECLARE_PLUGGABLE_CLASS(name)
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#define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name)
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#define IMPLEMENT_PLUGGABLE_CLASS(name, basename)
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#define IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)
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#define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename)
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#define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)
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#define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo)
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#define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo)
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#define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename)
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#define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2)
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#define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename)
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#define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)
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#endif // wxUSE_DYNAMIC_CLASSES
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#define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::sm_class##className)
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// Just seems a bit nicer-looking (pretend it's not a macro)
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#define wxIsKindOf(obj, className) obj->IsKindOf(&className::sm_class##className)
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// to be replaced by dynamic_cast<> in the future
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#define wxDynamicCast(obj, className) \
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(className *) wxCheckDynamicCast((wxObject*)(obj), &className::sm_class##className)
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// The 'this' pointer is always true, so use this version
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// to cast the this pointer and avoid compiler warnings.
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#define wxDynamicCastThis(className) \
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(IsKindOf(&className::sm_class##className) ? (className *)(this) : (className *)0)
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#define wxConstCast(obj, className) ((className *)(obj))
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#ifdef __WXDEBUG__
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inline void wxCheckCast(void *ptr)
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{
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wxASSERT_MSG( ptr, _T("wxStaticCast() used incorrectly") );
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}
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#define wxStaticCast(obj, className) \
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(wxCheckCast(wxDynamicCast(obj, className)), ((className *)(obj)))
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#else // !__WXDEBUG__
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#define wxStaticCast(obj, className) ((className *)(obj))
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#endif // __WXDEBUG__
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// Unfortunately Borland seems to need this include.
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#if wxUSE_STD_IOSTREAM \
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&& (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) \
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&& defined(__BORLANDC__)
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#if wxUSE_IOSTREAMH
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#include <iostream.h>
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#else
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#include <iostream>
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#endif
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#endif
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// ----------------------------------------------------------------------------
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// wxObject
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxObjectRefData;
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class WXDLLEXPORT wxObject
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{
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DECLARE_ABSTRACT_CLASS(wxObject)
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public:
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wxObject() : m_refData(0) {}
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virtual ~wxObject() { UnRef(); }
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bool IsKindOf(wxClassInfo *info) const;
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#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
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void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0);
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#ifndef __VISAGECPP__
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void operator delete (void * buf);
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#elif __DEBUG_ALLOC__
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void operator delete (void *buf, const char *_fname, size_t _line);
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#endif
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// VC++ 6.0
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#if defined(__VISUALC__) && (__VISUALC__ >= 1200)
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void operator delete(void *buf, wxChar*, int);
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#endif
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// Causes problems for VC++
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#if wxUSE_ARRAY_MEMORY_OPERATORS && !defined(__VISUALC__) && !defined( __MWERKS__)
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void *operator new[] (size_t size, wxChar *fileName = 0, int lineNum = 0);
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void operator delete[] (void *buf);
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#endif
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#ifdef __MWERKS__
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void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0);
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void *operator new[] (size_t size) { return operator new[] ( size, 0, 0 ) ; }
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void operator delete[] (void *buf);
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#endif
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#endif // Debug & memory tracing
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#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT)
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virtual void Dump(wxSTD ostream& str);
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#endif
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// make a 'clone' of the object
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void Ref(const wxObject& clone);
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// destroy a reference
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void UnRef();
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inline wxObjectRefData *GetRefData() const { return m_refData; }
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inline void SetRefData(wxObjectRefData *data) { m_refData = data; }
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protected:
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wxObjectRefData *m_refData;
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};
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class WXDLLEXPORT wxObjectRefData
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{
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friend class wxObject;
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public:
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wxObjectRefData() : m_count(1) {}
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virtual ~wxObjectRefData() {}
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inline int GetRefCount() const { return m_count; }
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private:
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int m_count;
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};
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inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo)
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{
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return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : 0;
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}
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#ifdef __WXDEBUG__
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#ifndef WXDEBUG_NEW
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#define WXDEBUG_NEW new(__TFILE__,__LINE__)
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#endif
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#else
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#define WXDEBUG_NEW new
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#endif
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// Redefine new to be the debugging version. This doesn't
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// work with all compilers, in which case you need to
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// use WXDEBUG_NEW explicitly if you wish to use the debugging version.
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#if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
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#define new new(__TFILE__,__LINE__)
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#endif
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#endif // _WX_OBJECTH__
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// vi:sts=4:sw=4:et
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