static const wxClassInfo *GetFirst() { return sm_first; }
const wxClassInfo *GetNext() const { return m_next; }
static wxClassInfo *FindClass(const wxChar *className);
-
+
// Climb upwards through inheritance hierarchy.
// Dual inheritance is catered for.
virtual void Dump(wxSTD ostream& str);
#endif
- // make a 'clone' of the object
-
+ // ref counted data handling methods
+
+ // get/set
+ wxObjectRefData *GetRefData() const { return m_refData; }
+ void SetRefData(wxObjectRefData *data) { m_refData = data; }
+
+ // make a 'clone' of the object
void Ref(const wxObject& clone);
- // destroy a reference
-
+ // destroy a reference
void UnRef();
- inline wxObjectRefData *GetRefData() const { return m_refData; }
- inline void SetRefData(wxObjectRefData *data) { m_refData = data; }
-
protected:
+ // ensure that our data is not shared with anybody else: if we have no
+ // data, it is created using CreateRefData() below, if we have shared data
+ // it is copied using CloneRefData(), otherwise nothing is done
+ void AllocExclusive();
+
+ // both methods must be implemented if Unshare() is used, not pure virtual
+ // only because of the backwards compatibility reasons
+
+ // create a new m_refData
+ virtual wxObjectRefData *CreateRefData() const;
+
+ // create a new m_refData initialized with the given one
+ virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
+
wxObjectRefData *m_refData;
};