570 lines
20 KiB
C++
570 lines
20 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/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: object.h 53135 2008-04-12 02:31:04Z VZ $
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// Copyright: (c) 1997 Julian Smart
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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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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "wx/memory.h"
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class WXDLLIMPEXP_FWD_BASE wxObject;
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#ifndef wxUSE_EXTENDED_RTTI
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#define wxUSE_EXTENDED_RTTI 0
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#endif
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#if wxUSE_EXTENDED_RTTI
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#include "wx/xti.h"
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#else
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// ----------------------------------------------------------------------------
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// conditional compilation
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_FWD_BASE wxClassInfo;
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class WXDLLIMPEXP_FWD_BASE wxHashTable;
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class WXDLLIMPEXP_FWD_BASE wxObjectRefData;
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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 WXDLLIMPEXP_BASE wxClassInfo
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{
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public:
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wxClassInfo( const wxChar *className,
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const wxClassInfo *baseInfo1,
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const wxClassInfo *baseInfo2,
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int size,
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wxObjectConstructorFn ctor )
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: m_className(className)
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, m_objectSize(size)
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, m_objectConstructor(ctor)
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, m_baseInfo1(baseInfo1)
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, m_baseInfo2(baseInfo2)
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, m_next(sm_first)
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{
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sm_first = this;
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Register();
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}
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~wxClassInfo();
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wxObject *CreateObject() const
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{ return m_objectConstructor ? (*m_objectConstructor)() : 0; }
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bool IsDynamic() const { return (NULL != m_objectConstructor); }
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const wxChar *GetClassName() const { return m_className; }
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const wxChar *GetBaseClassName1() const
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{ return m_baseInfo1 ? m_baseInfo1->GetClassName() : NULL; }
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const wxChar *GetBaseClassName2() const
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{ return m_baseInfo2 ? m_baseInfo2->GetClassName() : NULL; }
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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
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{ 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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#if WXWIN_COMPATIBILITY_2_4
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// Initializes parent pointers and hash table for fast searching.
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wxDEPRECATED( static void InitializeClasses() );
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// Cleans up hash table used for fast searching.
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wxDEPRECATED( static void CleanUpClasses() );
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#endif
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public:
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const wxChar *m_className;
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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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// FIXME: this should be private (currently used directly by way too
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// many clients)
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static wxHashTable *sm_classTable;
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private:
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// InitializeClasses() helper
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static wxClassInfo *GetBaseByName(const wxChar *name);
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DECLARE_NO_COPY_CLASS(wxClassInfo)
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protected:
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// registers the class
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void Register();
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void Unregister();
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};
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WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxChar *name);
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#if WXWIN_COMPATIBILITY_2_4
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inline void wxClassInfo::InitializeClasses() {}
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inline void wxClassInfo::CleanUpClasses() {}
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#endif
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// ----------------------------------------------------------------------------
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// Dynamic class macros
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// ----------------------------------------------------------------------------
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#define DECLARE_ABSTRACT_CLASS(name) \
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public: \
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static wxClassInfo ms_classInfo; \
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virtual wxClassInfo *GetClassInfo() const;
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#define DECLARE_DYNAMIC_CLASS_NO_ASSIGN(name) \
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DECLARE_NO_ASSIGN_CLASS(name) \
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DECLARE_DYNAMIC_CLASS(name)
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#define DECLARE_DYNAMIC_CLASS_NO_COPY(name) \
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DECLARE_NO_COPY_CLASS(name) \
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DECLARE_DYNAMIC_CLASS(name)
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#define DECLARE_DYNAMIC_CLASS(name) \
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DECLARE_ABSTRACT_CLASS(name) \
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static wxObject* wxCreateObject();
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#define DECLARE_CLASS(name) DECLARE_DYNAMIC_CLASS(name)
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// common part of the macros below
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#define wxIMPLEMENT_CLASS_COMMON(name, basename, baseclsinfo2, func) \
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wxClassInfo name::ms_classInfo(wxT(#name), \
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&basename::ms_classInfo, \
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baseclsinfo2, \
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(int) sizeof(name), \
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(wxObjectConstructorFn) func); \
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\
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wxClassInfo *name::GetClassInfo() const \
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{ return &name::ms_classInfo; }
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#define wxIMPLEMENT_CLASS_COMMON1(name, basename, func) \
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wxIMPLEMENT_CLASS_COMMON(name, basename, NULL, func)
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#define wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, func) \
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wxIMPLEMENT_CLASS_COMMON(name, basename1, &basename2::ms_classInfo, func)
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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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wxIMPLEMENT_CLASS_COMMON1(name, basename, name::wxCreateObject) \
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wxObject* name::wxCreateObject() \
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{ return new 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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wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, \
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name::wxCreateObject) \
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wxObject* name::wxCreateObject() \
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{ return new 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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wxIMPLEMENT_CLASS_COMMON1(name, basename, NULL)
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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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wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, NULL)
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#define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
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#define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
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#endif // !wxUSE_EXTENDED_RTTI
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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::ms_classInfo)
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#define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::ms_classInfo)
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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::ms_classInfo)
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// this cast does some more checks at compile time as it uses static_cast
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// internally
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//
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// note that it still has different semantics from dynamic_cast<> and so can't
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// be replaced by it as long as there are any compilers not supporting it
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#define wxDynamicCast(obj, className) \
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((className *) wxCheckDynamicCast( \
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wx_const_cast(wxObject *, wx_static_cast(const wxObject *, \
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wx_const_cast(className *, wx_static_cast(const className *, obj)))), \
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&className::ms_classInfo))
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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::ms_classInfo) ? (className *)(this) : (className *)0)
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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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return ptr;
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}
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#define wxStaticCast(obj, className) \
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((className *)wxCheckCast(wxDynamicCast(obj, className)))
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#else // !__WXDEBUG__
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#define wxStaticCast(obj, className) \
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wx_const_cast(className *, wx_static_cast(const className *, obj))
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#endif // __WXDEBUG__
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// ----------------------------------------------------------------------------
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// set up memory debugging macros
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// ----------------------------------------------------------------------------
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/*
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Which new/delete operator variants do we want?
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_WX_WANT_NEW_SIZET_WXCHAR_INT = void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0)
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_WX_WANT_DELETE_VOID = void operator delete (void * buf)
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_WX_WANT_DELETE_VOID_CONSTCHAR_SIZET = void operator delete (void *buf, const char *_fname, size_t _line)
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_WX_WANT_DELETE_VOID_WXCHAR_INT = void operator delete(void *buf, wxChar*, int)
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_WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT = void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0)
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_WX_WANT_ARRAY_DELETE_VOID = void operator delete[] (void *buf)
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_WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT = void operator delete[] (void* buf, wxChar*, int )
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*/
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#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
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// All compilers get this one
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#define _WX_WANT_NEW_SIZET_WXCHAR_INT
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// Everyone except Visage gets the next one
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#ifndef __VISAGECPP__
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#define _WX_WANT_DELETE_VOID
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#endif
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// Only visage gets this one under the correct circumstances
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#if defined(__VISAGECPP__) && __DEBUG_ALLOC__
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#define _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
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#endif
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// Only VC++ 6 and CodeWarrior get overloaded delete that matches new
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#if (defined(__VISUALC__) && (__VISUALC__ >= 1200)) || \
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(defined(__MWERKS__) && (__MWERKS__ >= 0x2400))
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#define _WX_WANT_DELETE_VOID_WXCHAR_INT
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#endif
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// Now see who (if anyone) gets the array memory operators
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#if wxUSE_ARRAY_MEMORY_OPERATORS
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// Everyone except Visual C++ (cause problems for VC++ - crashes)
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#if !defined(__VISUALC__)
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#define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
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#endif
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// Everyone except Visual C++ (cause problems for VC++ - crashes)
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#if !defined(__VISUALC__)
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#define _WX_WANT_ARRAY_DELETE_VOID
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#endif
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// Only CodeWarrior 6 or higher
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#if defined(__MWERKS__) && (__MWERKS__ >= 0x2400)
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#define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
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#endif
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#endif // wxUSE_ARRAY_MEMORY_OPERATORS
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#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
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// ----------------------------------------------------------------------------
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// wxObjectRefData: ref counted data meant to be stored in wxObject
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxObjectRefData
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{
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friend class WXDLLIMPEXP_FWD_BASE wxObject;
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public:
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wxObjectRefData() : m_count(1) { }
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virtual ~wxObjectRefData() { }
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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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// ----------------------------------------------------------------------------
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// wxObject: the root class of wxWidgets object hierarchy
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE 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 = NULL; }
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virtual ~wxObject() { UnRef(); }
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wxObject(const wxObject& other)
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{
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m_refData = other.m_refData;
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if (m_refData)
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m_refData->m_count++;
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}
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wxObject& operator=(const wxObject& other)
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{
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if ( this != &other )
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{
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Ref(other);
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}
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return *this;
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}
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bool IsKindOf(wxClassInfo *info) const;
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// Turn on the correct set of new and delete operators
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#ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT
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void *operator new ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
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#endif
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#ifdef _WX_WANT_DELETE_VOID
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void operator delete ( void * buf );
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#endif
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#ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
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void operator delete ( void *buf, const char *_fname, size_t _line );
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#endif
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#ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT
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void operator delete ( void *buf, const wxChar*, int );
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#endif
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#ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
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void *operator new[] ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
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#endif
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#ifdef _WX_WANT_ARRAY_DELETE_VOID
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void operator delete[] ( void *buf );
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#endif
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#ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
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void operator delete[] (void* buf, const wxChar*, int );
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#endif
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// ref counted data handling methods
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// get/set
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wxObjectRefData *GetRefData() const { return m_refData; }
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void SetRefData(wxObjectRefData *data) { m_refData = data; }
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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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// Make sure this object has only one reference
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void UnShare() { AllocExclusive(); }
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// check if this object references the same data as the other one
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bool IsSameAs(const wxObject& o) const { return m_refData == o.m_refData; }
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protected:
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// ensure that our data is not shared with anybody else: if we have no
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// data, it is created using CreateRefData() below, if we have shared data
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// it is copied using CloneRefData(), otherwise nothing is done
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void AllocExclusive();
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// both methods must be implemented if AllocExclusive() is used, not pure
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// virtual only because of the backwards compatibility reasons
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// create a new m_refData
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virtual wxObjectRefData *CreateRefData() const;
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|
|
|
// 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_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
|
|
return wx_const_cast(wxClassInfo *, m_classInfo);
|
|
#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__
|