/////////////////////////////////////////////////////////////////////////////
-// Name: object.cpp
+// Name: src/common/object.cpp
// Purpose: wxObject implementation
// Author: Julian Smart
-// Modified by:
+// Modified by: Ron Lee
// Created: 04/01/98
// RCS-ID: $Id$
-// Copyright: (c) Julian Smart and Markus Holzem
-// Licence: wxWindows license
+// Copyright: (c) 1998 Julian Smart
+// (c) 2001 Ron Lee <ron@debian.org>
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "object.h"
#endif
#endif
#ifndef WX_PRECOMP
-#include "wx/hash.h"
-#include "wx/objstrm.h"
+ #include "wx/hash.h"
+ #include "wx/object.h"
#endif
#include <string.h>
-#include <assert.h>
-#if (WXDEBUG && USE_MEMORY_TRACING) || USE_DEBUG_CONTEXT
+#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
#include "wx/memory.h"
#endif
-#if WXDEBUG || USE_DEBUG_CONTEXT
- // for wxObject::Dump
- #include <iostream.h>
+#if defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT
+ #if defined(__VISAGECPP__)
+ #define DEBUG_PRINTF(NAME) { static int raz=0; \
+ printf( #NAME " %i\n",raz); fflush(stdout); raz++; }
+ #else
+ #define DEBUG_PRINTF(NAME)
+ #endif
+#endif // __WXDEBUG__ || wxUSE_DEBUG_CONTEXT
+
+// we must disable optimizations for VC.NET because otherwise its too eager
+// linker discards wxClassInfo objects in release build thus breaking many,
+// many things
+#if defined __VISUALC__ && __VISUALC__ >= 1300
+ #pragma optimize("", off)
#endif
-#if !USE_SHARED_LIBRARY
-wxClassInfo wxObject::classwxObject("wxObject", NULL, NULL, sizeof(wxObject), NULL);
-wxClassInfo *wxClassInfo::first = NULL;
+#if wxUSE_EXTENDED_RTTI
+const wxClassInfo* wxObject::sm_classParentswxObject[] = { NULL } ;
+ wxObject* wxVariantToObjectConverterwxObject ( wxxVariant &data )
+{ return data.Get<wxObject*>() ; }
+ wxObject* wxVariantOfPtrToObjectConverterwxObject ( wxxVariant &data )
+{ return &data.Get<wxObject>() ; }
+ wxxVariant wxObjectToVariantConverterwxObject ( wxObject *data )
+ { return wxxVariant( dynamic_cast<wxObject*> (data) ) ; }
+ wxClassInfo wxObject::sm_classwxObject(sm_classParentswxObject , wxT("") , wxT("wxObject"),
+ (int) sizeof(wxObject), \
+ (wxObjectConstructorFn) 0 ,
+ (wxPropertyInfo*) NULL,(wxHandlerInfo*) NULL,0 , 0 ,
+ 0 , wxVariantOfPtrToObjectConverterwxObject , wxVariantToObjectConverterwxObject , wxObjectToVariantConverterwxObject);
+ template<> void wxStringReadValue(const wxString & , wxObject * & ){assert(0) ;}
+ template<> void wxStringWriteValue(wxString & , wxObject* const & ){assert(0) ;}
+ template<> void wxStringReadValue(const wxString & , wxObject & ){assert(0) ;}
+ template<> void wxStringWriteValue(wxString & , wxObject const & ){assert(0) ;}
+ template<> const wxTypeInfo* wxGetTypeInfo( wxObject ** )
+ { static wxClassTypeInfo s_typeInfo(wxT_OBJECT_PTR , &wxObject::sm_classwxObject) ; return &s_typeInfo ; }
+ template<> const wxTypeInfo* wxGetTypeInfo( wxObject * )
+ { static wxClassTypeInfo s_typeInfo(wxT_OBJECT , &wxObject::sm_classwxObject) ; return &s_typeInfo ; }
+#else
+wxClassInfo wxObject::sm_classwxObject( wxT("wxObject"), 0, 0,
+ (int) sizeof(wxObject),
+ (wxObjectConstructorFn) 0 );
#endif
-/*
- * wxWindows root object.
- */
+// restore optimizations
+#if defined __VISUALC__ && __VISUALC__ >= 1300
+ #pragma optimize("", on)
+#endif
-wxObject::wxObject(void)
-{
- m_refData = NULL;
-}
+wxClassInfo* wxClassInfo::sm_first = NULL;
+wxHashTable* wxClassInfo::sm_classTable = NULL;
-wxObject::~wxObject(void)
+// These are here so we can avoid 'always true/false' warnings
+// by referring to these instead of TRUE/FALSE
+const bool wxTrue = TRUE;
+const bool wxFalse = FALSE;
+
+// Is this object a kind of (a subclass of) 'info'?
+// E.g. is wxWindow a kind of wxObject?
+// Go from this class to superclass, taking into account
+// two possible base classes.
+bool wxObject::IsKindOf(wxClassInfo *info) const
{
- UnRef();
+ wxClassInfo *thisInfo = GetClassInfo();
+ return (thisInfo) ? thisInfo->IsKindOf(info) : FALSE ;
}
-/*
- * Is this object a kind of (a subclass of) 'info'?
- * E.g. is wxWindow a kind of wxObject?
- * Go from this class to superclass, taking into account
- * two possible base classes.
- */
-
-bool wxObject::IsKindOf(wxClassInfo *info)
+#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING && defined( new )
+ #undef new
+#endif
+
+
+#ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT
+void *wxObject::operator new ( size_t size, const wxChar *fileName, int lineNum )
{
- wxClassInfo *thisInfo = GetClassInfo();
- if (thisInfo)
- return thisInfo->IsKindOf(info);
- else
- return FALSE;
+ return wxDebugAlloc(size, (wxChar*) fileName, lineNum, TRUE);
}
+#endif
-#if WXDEBUG || USE_DEBUG_CONTEXT
-void wxObject::Dump(ostream& str)
+#ifdef _WX_WANT_DELETE_VOID
+void wxObject::operator delete ( void *buf )
{
- if (GetClassInfo() && GetClassInfo()->GetClassName())
- str << GetClassInfo()->GetClassName();
- else
- str << "unknown object class";
+ wxDebugFree(buf);
}
#endif
-#if WXDEBUG && USE_MEMORY_TRACING
-
-#ifdef new
-#undef new
+#ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
+void wxObject::operator delete ( void *buf, const char *_fname, size_t _line )
+{
+ wxDebugFree(buf);
+}
#endif
-void * wxObject::operator new (size_t size, char * fileName, int lineNum)
+#ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT
+void wxObject::operator delete ( void *buf, const wxChar *WXUNUSED(fileName), int WXUNUSED(lineNum) )
{
- return wxDebugAlloc(size, fileName, lineNum, TRUE);
+ wxDebugFree(buf);
}
+#endif
-void wxObject::operator delete (void * buf)
+#ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
+void *wxObject::operator new[] ( size_t size, const wxChar* fileName, int lineNum )
{
- wxDebugFree(buf);
+ return wxDebugAlloc(size, (wxChar*) fileName, lineNum, TRUE, TRUE);
}
+#endif
-// Cause problems for VC++ - crashes
-#ifndef _MSC_VER
-void * wxObject::operator new[] (size_t size, char * fileName, int lineNum)
+#ifdef _WX_WANT_ARRAY_DELETE_VOID
+void wxObject::operator delete[] ( void *buf )
{
- return wxDebugAlloc(size, fileName, lineNum, TRUE, TRUE);
+ wxDebugFree(buf, TRUE);
}
+#endif
-void wxObject::operator delete[] (void * buf)
+#ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
+void wxObject::operator delete[] (void * buf, const wxChar* WXUNUSED(fileName), int WXUNUSED(lineNum) )
{
- wxDebugFree(buf, TRUE);
+ wxDebugFree(buf, TRUE);
}
#endif
-#endif
-/*
- * Class info: provides run-time class type information.
- */
+// ----------------------------------------------------------------------------
+// wxClassInfo
+// ----------------------------------------------------------------------------
-wxClassInfo::wxClassInfo(char *cName, char *baseName1, char *baseName2, int sz, wxObjectConstructorFn constr)
+wxClassInfo::~wxClassInfo()
{
- className = cName;
- baseClassName1 = baseName1;
- baseClassName2 = baseName2;
-
- objectSize = sz;
- objectConstructor = constr;
-
- next = first;
- first = this;
-
- baseInfo1 = NULL;
- baseInfo2 = NULL;
+ // remove this object from the linked list of all class infos: if we don't
+ // do it, loading/unloading a DLL containing static wxClassInfo objects is
+ // not going to work
+ if ( this == sm_first )
+ {
+ sm_first = m_next;
+ }
+ else
+ {
+ wxClassInfo *info = sm_first;
+ while (info)
+ {
+ if ( info->m_next == this )
+ {
+ info->m_next = m_next;
+ break;
+ }
+
+ info = info->m_next;
+ }
+ }
+ Unregister();
}
-wxObject *wxClassInfo::CreateObject(void)
+wxClassInfo *wxClassInfo::FindClass(const wxChar *className)
{
- if (objectConstructor)
- return (wxObject *)(*objectConstructor)();
- else
- return NULL;
+ if ( sm_classTable )
+ {
+ return (wxClassInfo *)wxClassInfo::sm_classTable->Get(className);
+ }
+ else
+ {
+ for ( wxClassInfo *info = sm_first; info ; info = info->m_next )
+ {
+ if ( wxStrcmp(info->GetClassName(), className) == 0 )
+ return info;
+ }
+
+ return NULL;
+ }
}
-wxClassInfo *wxClassInfo::FindClass(char *c)
+void wxClassInfo::CleanUp()
{
- wxClassInfo *p = first;
- while (p)
- {
- if (p && p->GetClassName() && strcmp(p->GetClassName(), c) == 0)
- return p;
- p = p->next;
- }
- return NULL;
+ if ( sm_classTable )
+ {
+ delete sm_classTable;
+ sm_classTable = NULL;
+ }
}
-// Climb upwards through inheritance hierarchy.
-// Dual inheritance is catered for.
-bool wxClassInfo::IsKindOf(wxClassInfo *info)
+void wxClassInfo::Register()
{
- if (info == NULL)
- return FALSE;
-
- // For some reason, when making/using a DLL, static data has to be included
- // in both the DLL and the application. This can lead to duplicate
- // wxClassInfo objects, so we have to test the name instead of the pointers.
-#if WXMAKINGDLL
- if (GetClassName() && info->GetClassName() && (strcmp(GetClassName(), info->GetClassName()) == 0))
- return TRUE;
-#else
- if (this == info)
- return TRUE;
-#endif
-
- if (baseInfo1)
- if (baseInfo1->IsKindOf(info))
- return TRUE;
-
- if (baseInfo2)
- return baseInfo2->IsKindOf(info);
+ if ( !sm_classTable )
+ {
+ sm_classTable = new wxHashTable(wxKEY_STRING);
+ }
- return FALSE;
+ // using IMPLEMENT_DYNAMIC_CLASS() macro twice (which may happen if you
+ // link any object module twice mistakenly) will break this function
+ // because it will enter an infinite loop and eventually die with "out of
+ // memory" - as this is quite hard to detect if you're unaware of this,
+ // try to do some checks here
+ wxASSERT_MSG( sm_classTable->Get(m_className) == NULL,
+ _T("class already in RTTI table - have you used IMPLEMENT_DYNAMIC_CLASS() twice (may be by linking some object module(s) twice)?") );
+
+ sm_classTable->Put(m_className, (wxObject *)this);
}
-// Set pointers to base class(es) to speed up IsKindOf
-void wxClassInfo::InitializeClasses(void)
+void wxClassInfo::Unregister()
{
- wxHashTable table(wxKEY_STRING);
-
- // Index all class infos by their class name
- wxClassInfo *info = first;
- while (info)
- {
- if (info->className)
- table.Put(info->className, (wxObject *)info);
- info = info->next;
- }
-
- // Set base pointers for each wxClassInfo
- info = first;
- while (info)
- {
- if (info->GetBaseClassName1())
- info->baseInfo1 = (wxClassInfo *)table.Get(info->GetBaseClassName1());
- if (info->GetBaseClassName2())
- info->baseInfo2 = (wxClassInfo *)table.Get(info->GetBaseClassName2());
- info = info->next;
- }
+ if ( sm_classTable )
+ {
+ sm_classTable->Delete(m_className);
+ if ( sm_classTable->GetCount() == 0 )
+ {
+ delete sm_classTable;
+ sm_classTable = NULL;
+ }
+ }
}
-wxObject *wxCreateDynamicObject(char *name)
+wxObject *wxCreateDynamicObject(const wxChar *name)
{
- wxClassInfo *info = wxClassInfo::first;
- while (info)
- {
- if (info->className && strcmp(info->className, name) == 0)
- return info->CreateObject();
- info = info->next;
- }
- return NULL;
+#if defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT
+ DEBUG_PRINTF(wxObject *wxCreateDynamicObject)
+#endif
+
+ if ( wxClassInfo::sm_classTable )
+ {
+ wxClassInfo *info = (wxClassInfo *)wxClassInfo::sm_classTable->Get(name);
+ return info ? info->CreateObject() : NULL;
+ }
+ else // no sm_classTable yet
+ {
+ for ( wxClassInfo *info = wxClassInfo::sm_first;
+ info;
+ info = info->m_next )
+ {
+ if (info->m_className && wxStrcmp(info->m_className, name) == 0)
+ return info->CreateObject();
+ }
+
+ return NULL;
+ }
}
-#ifdef USE_STORABLE_CLASSES
-wxObject* wxCreateStoredObject( wxInputStream &stream )
+// ----------------------------------------------------------------------------
+// wxObject
+// ----------------------------------------------------------------------------
+
+// Initialize ref data from another object (needed for copy constructor and
+// assignment operator)
+void wxObject::InitFrom(const wxObject& other)
{
- wxObjectInputStream obj_s(stream);
- return obj_s.LoadObject();
-};
+ m_refData = other.m_refData;
+ if ( m_refData )
+ m_refData->m_count++;
+}
+void wxObject::Ref(const wxObject& clone)
+{
+#if defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT
+ DEBUG_PRINTF(wxObject::Ref)
#endif
-/*
- * wxObject: cloning of objects
- */
+ // nothing to be done
+ if (m_refData == clone.m_refData)
+ return;
-void wxObject::Ref(const wxObject& clone)
-{
// delete reference to old data
UnRef();
+
// reference new data
- if (clone.m_refData) {
+ if ( clone.m_refData )
+ {
m_refData = clone.m_refData;
++(m_refData->m_count);
}
}
-void wxObject::UnRef(void)
+void wxObject::UnRef()
{
- if (m_refData) {
- assert(m_refData->m_count > 0);
- --(m_refData->m_count);
- if (m_refData->m_count == 0)
+ if ( m_refData )
+ {
+ wxASSERT_MSG( m_refData->m_count > 0, _T("invalid ref data count") );
+
+ if ( !--m_refData->m_count )
delete m_refData;
+ m_refData = NULL;
}
- m_refData = NULL;
}
-/*
- * wxObjectData
- */
-
-wxObjectRefData::wxObjectRefData(void) : m_count(1)
+void wxObject::AllocExclusive()
{
+ if ( !m_refData )
+ {
+ m_refData = CreateRefData();
+ }
+ else if ( m_refData->GetRefCount() > 1 )
+ {
+ // note that ref is not going to be destroyed in this case
+ const wxObjectRefData* ref = m_refData;
+ UnRef();
+
+ // ... so we can still access it
+ m_refData = CloneRefData(ref);
+ }
+ //else: ref count is 1, we are exclusive owners of m_refData anyhow
+
+ wxASSERT_MSG( m_refData && m_refData->GetRefCount() == 1,
+ _T("wxObject::AllocExclusive() failed.") );
}
-wxObjectRefData::~wxObjectRefData(void)
+wxObjectRefData *wxObject::CreateRefData() const
{
+ // if you use AllocExclusive() you must override this method
+ wxFAIL_MSG( _T("CreateRefData() must be overridden if called!") );
+
+ return NULL;
}
+wxObjectRefData *
+wxObject::CloneRefData(const wxObjectRefData * WXUNUSED(data)) const
+{
+ // if you use AllocExclusive() you must override this method
+ wxFAIL_MSG( _T("CloneRefData() must be overridden if called!") );
+
+ return NULL;
+}
projects / wxWidgets.git / blobdiff