include/wx/object.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        object.h
   3 // Purpose:     wxObject class, plus run-time type information macros
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_OBJECTH__
  13 #define _WX_OBJECTH__
  14
  15 #ifdef __GNUG__
  16 #pragma interface "object.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20 #include "wx/memory.h"
  21
  22 class WXDLLEXPORT wxObject;
  23
  24 #if wxUSE_DYNAMIC_CLASSES
  25
  26 #ifdef __GNUWIN32__
  27 #ifdef GetClassName
  28 #undef GetClassName
  29 #endif
  30 #endif
  31
  32 class WXDLLEXPORT wxClassInfo;
  33 class WXDLLIMPORT ostream;
  34 class WXDLLEXPORT wxInputStream;
  35 class WXDLLEXPORT wxObjectInputStream;
  36 class WXDLLEXPORT wxObjectOutputStream;
  37 class WXDLLEXPORT wxHashTable;
  38 class WXDLLEXPORT wxObject_Serialize;
  39
  40 /*
  41  * Dynamic object system declarations
  42  */
  43
  44 typedef wxObject * (*wxObjectConstructorFn) (void);
  45
  46 class WXDLLEXPORT wxClassInfo
  47 {
  48  public:
  49    wxClassInfo(char *cName, char *baseName1, char *baseName2, int sz, wxObjectConstructorFn fn);
  50
  51    wxObject *CreateObject(void);
  52
  53    inline char *GetClassName(void) const { return m_className; }
  54    inline char *GetBaseClassName1(void) const { return m_baseClassName1; }
  55    inline char *GetBaseClassName2(void) const { return m_baseClassName2; }
  56    inline wxClassInfo* GetBaseClass1() const { return m_baseInfo1; }
  57    inline wxClassInfo* GetBaseClass2() const { return m_baseInfo2; }
  58    inline int GetSize(void) const { return m_objectSize; }
  59    inline wxObjectConstructorFn GetConstructor() const { return m_objectConstructor; }
  60    static inline wxClassInfo* GetFirst() { return sm_first; }
  61    inline wxClassInfo* GetNext() const { return m_next; }
  62    bool IsKindOf(wxClassInfo *info) const;
  63
  64    static wxClassInfo *FindClass(char *c);
  65
  66    // Initializes parent pointers and hash table for fast searching.
  67    static void InitializeClasses(void);
  68
  69    // Cleans up hash table used for fast searching.
  70    static void CleanUpClasses(void);
  71
  72 public:
  73    char*                    m_className;
  74    char*                    m_baseClassName1;
  75    char*                    m_baseClassName2;
  76    int                      m_objectSize;
  77    wxObjectConstructorFn    m_objectConstructor;
  78
  79    // Pointers to base wxClassInfos: set in InitializeClasses
  80    // called from wx_main.cc
  81    wxClassInfo*             m_baseInfo1;
  82    wxClassInfo*             m_baseInfo2;
  83
  84    static wxClassInfo*      sm_first;
  85    wxClassInfo*             m_next;
  86
  87    static wxHashTable*      sm_classTable;
  88 };
  89
  90 wxObject* WXDLLEXPORT wxCreateDynamicObject(const char *name);
  91
  92 #ifdef wxUSE_SERIAL
  93 wxObject* WXDLLEXPORT wxCreateStoredObject( wxInputStream& stream );
  94 #endif
  95
  96 #define DECLARE_DYNAMIC_CLASS(name) \
  97  public:\
  98   static wxClassInfo sm_class##name;\
  99   wxClassInfo *GetClassInfo() const \
 100    { return &name::sm_class##name; }
 101
 102 #define DECLARE_ABSTRACT_CLASS(name) DECLARE_DYNAMIC_CLASS(name)
 103 #define DECLARE_CLASS(name) DECLARE_DYNAMIC_CLASS(name)
 104
 105 //////
 106 ////// for concrete classes
 107 //////
 108
 109 // Single inheritance with one base class
 110 #define IMPLEMENT_DYNAMIC_CLASS(name, basename) \
 111 wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name(void) \
 112    { return new name; }\
 113  wxClassInfo name::sm_class##name((char *) #name, (char *) #basename, (char *) NULL, (int) sizeof(name), (wxObjectConstructorFn) wxConstructorFor##name);
 114
 115 // Multiple inheritance with two base classes
 116 #define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) \
 117 wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name(void) \
 118    { return new name; }\
 119  wxClassInfo name::sm_class##name((char *) #name, (char *) #basename1, (char *) #basename2, (int) sizeof(name), (wxObjectConstructorFn) wxConstructorFor##name);
 120
 121 //////
 122 ////// for abstract classes
 123 //////
 124
 125 // Single inheritance with one base class
 126 #define IMPLEMENT_ABSTRACT_CLASS(name, basename) \
 127  wxClassInfo name::sm_class##name((char *) #name, (char *) #basename, \
 128                  (char *) NULL, (int) sizeof(name), (wxObjectConstructorFn) NULL);
 129
 130 // Multiple inheritance with two base classes
 131 #define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) \
 132  wxClassInfo name::sm_class##name((char *) #name, (char *) #basename1, (char *) #basename2, (int) sizeof(name), (wxObjectConstructorFn) NULL);
 133
 134 #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
 135 #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
 136
 137 #define CLASSINFO(name) (&name::sm_class##name)
 138
 139 #else
 140
 141 // No dynamic class system: so stub out the macros
 142 #define DECLARE_DYNAMIC_CLASS(name)
 143 #define DECLARE_ABSTRACT_CLASS(name)
 144 #define DECLARE_CLASS(name)
 145 #define IMPLEMENT_DYNAMIC_CLASS(name, basename)
 146 #define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2)
 147 #define IMPLEMENT_ABSTRACT_CLASS(name, basename)
 148 #define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2)
 149 #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
 150 #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
 151
 152 #endif
 153
 154 #define IS_KIND_OF(obj, className) obj->IsKindOf(&className::sm_class##className)
 155
 156 // Unfortunately Borland seems to need this include.
 157 #ifdef __BORLANDC__
 158 #if wxUSE_IOSTREAMH
 159 #include <iostream.h>
 160 #else
 161 #include <iostream>
 162 #endif
 163 #endif
 164
 165 class WXDLLEXPORT wxObjectRefData;
 166
 167 class WXDLLEXPORT wxObject
 168 {
 169  public:
 170
 171   // This is equivalent to using the macro DECLARE_ABSTRACT_CLASS
 172   static wxClassInfo sm_classwxObject;
 173
 174   wxObject(void);
 175   virtual ~wxObject(void);
 176
 177   virtual wxClassInfo *GetClassInfo(void) const { return &sm_classwxObject; }
 178
 179   bool IsKindOf(wxClassInfo *info) const;
 180
 181 #if WXDEBUG && wxUSE_MEMORY_TRACING
 182   void * operator new (size_t size, char * fileName = NULL, int lineNum = 0);
 183   void operator delete (void * buf);
 184
 185 // VC++ 6.0
 186 #if _MSC_VER >= 1200
 187   void operator delete(void *buf, char*, int);
 188 #endif
 189
 190   // Cause problems for VC++
 191 #ifndef _MSC_VER
 192   void * operator new[] (size_t size, char * fileName = NULL, int lineNum = 0);
 193   void operator delete[] (void * buf);
 194 #endif
 195
 196 #endif
 197
 198 #if WXDEBUG || wxUSE_DEBUG_CONTEXT
 199   virtual void Dump(ostream& str);
 200 #endif
 201
 202 #ifdef wxUSE_SERIAL
 203   virtual void StoreObject( wxObjectOutputStream &stream );
 204   virtual void LoadObject( wxObjectInputStream &stream );
 205 #endif
 206
 207   // make a 'clone' of the object
 208   void Ref(const wxObject& clone);
 209
 210   // destroy a reference
 211   void UnRef(void);
 212
 213   inline wxObjectRefData *GetRefData(void) const { return m_refData; }
 214   inline void SetRefData(wxObjectRefData *data) { m_refData = data; }
 215
 216 protected:
 217   wxObjectRefData*      m_refData;
 218 #ifdef wxUSE_SERIAL
 219   wxObject_Serialize*   m_serialObj;
 220 #endif
 221 };
 222
 223 /*
 224  * wxObjectData
 225  */
 226
 227 class WXDLLEXPORT wxObjectRefData {
 228
 229     friend class wxObject;
 230
 231 public:
 232     wxObjectRefData(void);
 233     virtual ~wxObjectRefData(void);
 234
 235     inline int GetRefCount(void) const { return m_count; }
 236 private:
 237     int m_count;
 238 };
 239
 240 #if WXDEBUG && wxUSE_GLOBAL_MEMORY_OPERATORS
 241 //#ifndef WXDEBUG_NEW
 242 //#define WXDEBUG_NEW new(__FILE__,__LINE__)
 243 //#endif
 244 #define new new(__FILE__,__LINE__)
 245 #endif
 246
 247 #endif
 248     // _WX_OBJECTH__
 249
 250