X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c67daf87774c71ae9f73af9969008af220e52a11..67b81440f079f88e6202a199fd5763af73bbac0f:/src/common/object.cpp

diff --git a/src/common/object.cpp b/src/common/object.cpp
index 5087cf190b..857d89a0da 100644
--- a/src/common/object.cpp
+++ b/src/common/object.cpp
@@ -6,7 +6,7 @@
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart and Markus Holzem
-// Licence:   	wxWindows license
+// Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
 #ifdef __GNUG__
@@ -21,39 +21,52 @@
 #endif
 
 #ifndef WX_PRECOMP
-#include "wx/hash.h"
-#include "wx/objstrm.h"
-#endif
+    #include "wx/hash.h"
+    #if wxUSE_SERIAL
+        #include "wx/objstrm.h"
+        #include "wx/serbase.h"
+
+        // for error messages
+        #include "wx/log.h"
+        #include "wx/intl.h"
+    #endif // wxUSE_SERIAL
+#endif // WX_PRECOMP
 
 #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
+    // for wxObject::Dump
+    #include "wx/ioswrap.h"
 #endif
 
-#if !USE_SHARED_LIBRARY
-wxClassInfo wxObject::classwxObject((char *) "wxObject", (char *) NULL, (char *) NULL, (int ) sizeof(wxObject), (wxObjectConstructorFn) NULL);
-wxClassInfo *wxClassInfo::first = (wxClassInfo *) NULL;
-#endif
+wxClassInfo wxObject::sm_classwxObject((wxChar *) wxT("wxObject"), (wxChar *) NULL, (wxChar *) NULL, (int ) sizeof(wxObject), (wxObjectConstructorFn) NULL);
+wxClassInfo* wxClassInfo::sm_first = (wxClassInfo *) NULL;
+wxHashTable* wxClassInfo::sm_classTable = (wxHashTable*) NULL;
 
 /*
  * wxWindows root object.
  */
 
-wxObject::wxObject(void)
+wxObject::wxObject()
 {
-  m_refData = (wxObjectRefData *) NULL;
+    m_refData = (wxObjectRefData *) NULL;
+#if wxUSE_SERIAL
+    m_serialObj = (wxObject_Serialize *)NULL;
+#endif
 }
 
-wxObject::~wxObject(void)
+wxObject::~wxObject()
 {
-	UnRef();
+    UnRef();
+#if wxUSE_SERIAL
+    if (m_serialObj)
+        delete m_serialObj;
+#endif
 }
 
 /*
@@ -62,52 +75,76 @@ wxObject::~wxObject(void)
  * Go from this class to superclass, taking into account
  * two possible base classes.
  */
- 
-bool wxObject::IsKindOf(wxClassInfo *info)
+
+bool wxObject::IsKindOf(wxClassInfo *info) const
 {
-  wxClassInfo *thisInfo = GetClassInfo();
-  if (thisInfo)
-    return thisInfo->IsKindOf(info);
-  else
-    return FALSE;
+    wxClassInfo *thisInfo = GetClassInfo();
+    if (thisInfo)
+        return thisInfo->IsKindOf(info);
+    else
+        return FALSE;
+}
+
+wxObject *wxObject::Clone() const
+{
+    wxObject *object = GetClassInfo()->CreateObject();
+    CopyObject(*object);
+    return object;
 }
 
-#if WXDEBUG || USE_DEBUG_CONTEXT
+#ifdef __WXDEBUG__
+void wxObject::CopyObject(wxObject& object_dest) const
+#else // !Debug
+void wxObject::CopyObject(wxObject& WXUNUSED(object_dest)) const
+#endif // Debug/!Debug
+{
+    wxASSERT(object_dest.GetClassInfo()->IsKindOf(GetClassInfo()));
+}
+
+#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT)
 void wxObject::Dump(ostream& str)
 {
-  if (GetClassInfo() && GetClassInfo()->GetClassName())
-    str << GetClassInfo()->GetClassName();
-  else
-    str << "unknown object class";
+    if (GetClassInfo() && GetClassInfo()->GetClassName())
+        str << GetClassInfo()->GetClassName();
+    else
+        str << "unknown object class";
 }
 #endif
 
-#if WXDEBUG && USE_MEMORY_TRACING
+#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
 
 #ifdef new
 #undef new
 #endif
 
-void * wxObject::operator new (size_t size, char * fileName, int lineNum)
+void *wxObject::operator new (size_t size, wxChar * fileName, int lineNum)
 {
-  return wxDebugAlloc(size, fileName, lineNum, TRUE);
+    return wxDebugAlloc(size, fileName, lineNum, TRUE);
 }
 
 void wxObject::operator delete (void * buf)
 {
-  wxDebugFree(buf);
+    wxDebugFree(buf);
 }
 
+// VC++ 6.0
+#if defined(__VISUALC__) && (__VISUALC__ >= 1200)
+void wxObject::operator delete(void* pData, char* /* fileName */, int /* lineNum */)
+{
+    ::operator delete(pData);
+}
+#endif
+
 // Cause problems for VC++ - crashes
-#ifndef _MSC_VER
-void * wxObject::operator new[] (size_t size, char * fileName, int lineNum)
+#if (!defined(__VISUALC__) && wxUSE_ARRAY_MEMORY_OPERATORS ) || defined(__MWERKS__)
+void * wxObject::operator new[] (size_t size, wxChar * fileName, int lineNum)
 {
-  return wxDebugAlloc(size, fileName, lineNum, TRUE, TRUE);
+    return wxDebugAlloc(size, fileName, lineNum, TRUE, TRUE);
 }
 
 void wxObject::operator delete[] (void * buf)
 {
-  wxDebugFree(buf, TRUE);
+    wxDebugFree(buf, TRUE);
 }
 #endif
 
@@ -117,162 +154,204 @@ void wxObject::operator delete[] (void * buf)
  * Class info: provides run-time class type information.
  */
 
-wxClassInfo::wxClassInfo(char *cName, char *baseName1, char *baseName2, int sz, wxObjectConstructorFn constr)
+wxClassInfo::wxClassInfo(wxChar *cName, wxChar *baseName1, wxChar *baseName2, int sz, wxObjectConstructorFn constr)
 {
-  className = cName;
-  baseClassName1 = baseName1;
-  baseClassName2 = baseName2;
-
-  objectSize = sz;
-  objectConstructor = constr;
-  
-  next = first;
-  first = this;
-
-  baseInfo1 = (wxClassInfo *) NULL;
-  baseInfo2 = (wxClassInfo *) NULL;
+    m_className = cName;
+    m_baseClassName1 = baseName1;
+    m_baseClassName2 = baseName2;
+
+    m_objectSize = sz;
+    m_objectConstructor = constr;
+
+    m_next = sm_first;
+    sm_first = this;
+
+    m_baseInfo1 = (wxClassInfo *) NULL;
+    m_baseInfo2 = (wxClassInfo *) NULL;
 }
 
-wxObject *wxClassInfo::CreateObject(void)
+wxObject *wxClassInfo::CreateObject()
 {
-  if (objectConstructor)
-    return (wxObject *)(*objectConstructor)();
-  else
-    return (wxObject *) NULL;
+    if (m_objectConstructor)
+        return (wxObject *)(*m_objectConstructor)();
+    else
+        return (wxObject *) NULL;
 }
 
-wxClassInfo *wxClassInfo::FindClass(char *c)
+wxClassInfo *wxClassInfo::FindClass(wxChar *c)
 {
-  wxClassInfo *p = first;
-  while (p)
-  {
-    if (p && p->GetClassName() && strcmp(p->GetClassName(), c) == 0)
-      return p;
-    p = p->next;
-  }
-  return (wxClassInfo *) NULL;
+    wxClassInfo *p = sm_first;
+    while (p)
+    {
+        if (p && p->GetClassName() && wxStrcmp(p->GetClassName(), c) == 0)
+            return p;
+        p = p->m_next;
+    }
+    return (wxClassInfo *) NULL;
 }
 
 // Climb upwards through inheritance hierarchy.
 // Dual inheritance is catered for.
-bool wxClassInfo::IsKindOf(wxClassInfo *info)
+bool wxClassInfo::IsKindOf(wxClassInfo *info) const
 {
-  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 (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.
+    // PROBABLY NO LONGER TRUE now I've done DLL creation right.
+    /*
 #if WXMAKINGDLL
-  if (GetClassName() && info->GetClassName() && (strcmp(GetClassName(), info->GetClassName()) == 0))
-    return TRUE;
+if (GetClassName() && info->GetClassName() && (wxStrcmp(GetClassName(), info->GetClassName()) == 0))
+return TRUE;
 #else
-  if (this == info)
-    return TRUE;
-#endif
+     */
+    if (this == info)
+        return TRUE;
 
-  if (baseInfo1)
-    if (baseInfo1->IsKindOf(info))
-      return TRUE;
+    if (m_baseInfo1)
+        if (m_baseInfo1->IsKindOf(info))
+            return TRUE;
 
-  if (baseInfo2)
-    return baseInfo2->IsKindOf(info);
+    if (m_baseInfo2)
+        return m_baseInfo2->IsKindOf(info);
 
-  return FALSE;
+    return FALSE;
 }
 
 // Set pointers to base class(es) to speed up IsKindOf
-void wxClassInfo::InitializeClasses(void)
+void wxClassInfo::InitializeClasses()
 {
-  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;
-  }
+    // 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
+#ifdef __WXDEBUG__
+    // more classes than we'll ever have
+    static const size_t nMaxClasses = 10000;
+    size_t nClass = 0;
+#endif // Debug
+
+    wxClassInfo::sm_classTable = new wxHashTable(wxKEY_STRING);
+
+    // Index all class infos by their class name
+    wxClassInfo *info = sm_first;
+    while (info)
+    {
+        if (info->m_className)
+        {
+            wxASSERT_MSG( ++nClass < nMaxClasses,
+                          _T("an infinite loop detected - have you used "
+                            "IMPLEMENT_DYNAMIC_CLASS() twice (may be by "
+                            "linking some object module(s) twice)?") );
+
+            sm_classTable->Put(info->m_className, (wxObject *)info);
+        }
+
+        info = info->m_next;
+    }
+
+    // Set base pointers for each wxClassInfo
+    info = sm_first;
+    while (info)
+    {
+        if (info->GetBaseClassName1())
+            info->m_baseInfo1 = (wxClassInfo *)sm_classTable->Get(info->GetBaseClassName1());
+        if (info->GetBaseClassName2())
+            info->m_baseInfo2 = (wxClassInfo *)sm_classTable->Get(info->GetBaseClassName2());
+        info = info->m_next;
+    }
 }
 
-wxObject *wxCreateDynamicObject(char *name)
+void wxClassInfo::CleanUpClasses()
 {
-  wxClassInfo *info = wxClassInfo::first;
-  while (info)
-  {
-    if (info->className && strcmp(info->className, name) == 0)
-      return info->CreateObject();
-    info = info->next;
-  }
-  return (wxObject *) NULL;
+    delete wxClassInfo::sm_classTable;
+    wxClassInfo::sm_classTable = NULL;
 }
 
-#ifdef USE_STORABLE_CLASSES
+wxObject *wxCreateDynamicObject(const wxChar *name)
+{
+    if (wxClassInfo::sm_classTable)
+    {
+        wxClassInfo *info = (wxClassInfo *)wxClassInfo::sm_classTable->Get(name);
+        if (!info)
+            return (wxObject *)NULL;
+
+        return info->CreateObject();
+    }
+    else
+    {
+        wxClassInfo *info = wxClassInfo::sm_first;
+        while (info)
+        {
+            if (info->m_className && wxStrcmp(info->m_className, name) == 0)
+                return info->CreateObject();
+            info = info->m_next;
+        }
+        return (wxObject*) NULL;
+    }
+}
+
+#if wxUSE_SERIAL
 
 #include "wx/serbase.h"
 #include "wx/dynlib.h"
-#include "wx/msgdlg.h"
 
 wxObject* wxCreateStoredObject( wxInputStream &stream )
 {
-  wxObjectInputStream obj_s(stream);
-  return obj_s.LoadObject();
+    wxObjectInputStream obj_s(stream);
+    return obj_s.LoadObject();
 };
 
 void wxObject::StoreObject( wxObjectOutputStream& stream )
 {
-  wxString obj_name = wxString(GetClassInfo()->GetClassName()) + "_Serialize";
-  wxLibrary *lib = wxTheLibraries.LoadLibrary("wxserial");
-  WXSERIAL(wxObject) *serial =
-                           (WXSERIAL(wxObject) *)lib->CreateObject( obj_name );
-
-  if (!serial) {
-    wxString message;
-
-    message.Printf("Can't find the serialization object (%s) for the object %s",
-                   WXSTRINGCAST obj_name,                                                          WXSTRINGCAST GetClassInfo()->GetClassName());
-    wxMessageBox(message, "Alert !");
-    return;
-  }
-
-  serial->SetObject(this);
-  serial->StoreObject(stream);
+    wxString obj_name = wxString(GetClassInfo()->GetClassName()) + "_Serialize";
+    wxLibrary *lib = wxTheLibraries.LoadLibrary("wxserial");
+
+    if (!lib) {
+        wxLogError(_("Can't load wxSerial dynamic library."));
+        return;
+    }
+    if (!m_serialObj) {
+        m_serialObj = (WXSERIAL(wxObject) *)lib->CreateObject( obj_name );
+
+        if (!m_serialObj) {
+            wxLogError(_("Can't find the serialization object '%s' "
+                        "for the object '%s'."),
+                    obj_name.c_str(),
+                    GetClassInfo()->GetClassName());
+            return;
+        }
+        m_serialObj->SetObject(this);
+    }
+
+    m_serialObj->StoreObject(stream);
 }
 
 void wxObject::LoadObject( wxObjectInputStream& stream )
 {
-  wxString obj_name = wxString(GetClassInfo()->GetClassName()) + "_Serialize";
-  wxLibrary *lib = wxTheLibraries.LoadLibrary("wxserial");
-  WXSERIAL(wxObject) *serial =
-                           (WXSERIAL(wxObject) *)lib->CreateObject( obj_name );
-
-  if (!serial) {
-    wxString message;
-
-    message.Printf("Can't find the serialization object (%s) for the object %s",
-                   WXSTRINGCAST obj_name,
-                   WXSTRINGCAST GetClassInfo()->GetClassName());
-    wxMessageBox(message, "Alert !");
-    return;
-  }
-
-  serial->SetObject(this);
-  serial->LoadObject(stream);
+    wxString obj_name = wxString(GetClassInfo()->GetClassName()) + "_Serialize";
+    wxLibrary *lib = wxTheLibraries.LoadLibrary("wxserial");
+
+    if (!m_serialObj) {
+        m_serialObj = (WXSERIAL(wxObject) *)lib->CreateObject( obj_name );
+
+        if (!m_serialObj) {
+            wxLogError(_("Can't find the serialization object '%s' "
+                        "for the object '%s'."),
+                    obj_name.c_str(),
+                    GetClassInfo()->GetClassName());
+            return;
+        }
+        m_serialObj->SetObject(this);
+    }
+
+    m_serialObj->LoadObject(stream);
 }
 
-#endif
+#endif // wxUSE_SERIAL
 
 /*
  * wxObject: cloning of objects
@@ -289,15 +368,17 @@ void wxObject::Ref(const wxObject& clone)
     }
 }
 
-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 = (wxObjectRefData *) NULL;
     }
-    m_refData = (wxObjectRefData *) NULL;
 }
 
 /*
@@ -308,7 +389,11 @@ wxObjectRefData::wxObjectRefData(void) : m_count(1)
 {
 }
 
-wxObjectRefData::~wxObjectRefData(void)
+wxObjectRefData::~wxObjectRefData()
 {
 }
 
+// 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;