Reapply wxWeakRef patch again

[wxWidgets.git] / include / wx / variant.h

diff --git a/include/wx/variant.h b/include/wx/variant.h
index a0341750e419ec456769a262af60a0dbfc7c29a8..89cb6c437d73444f1e307e751efd4796007227d1 100644 (file)
--- a/include/wx/variant.h
+++ b/include/wx/variant.h
@@ -26,10 +26,6 @@
     #include "wx/datetime.h"
 #endif // wxUSE_DATETIME
 
-#if wxUSE_ODBC
-    #include "wx/db.h"  // will #include sqltypes.h
-#endif //ODBC
-
 #include "wx/iosfwrap.h"
 
 /*
@@ -59,13 +55,11 @@
  * overloading wxVariant with unnecessary functionality.
  */
 
-class WXDLLIMPEXP_BASE wxVariantData: public wxObject
+class WXDLLIMPEXP_BASE wxVariantData
 {
     friend class wxVariant;
 public:
-    wxVariantData()
-        : wxObject(), m_count(1)
-    { }
+    wxVariantData() : m_count(1) { }
 
     // Override these to provide common functionality
     virtual bool Eq(wxVariantData& data) const = 0;
@@ -83,6 +77,10 @@ public:
     // If it based on wxObject return the ClassInfo.
     virtual wxClassInfo* GetValueClassInfo() { return NULL; }
 
+    // Implement this to make wxVariant::AllocExcusive work. Returns
+    // a copy of the data.
+    virtual wxVariantData* Clone() const { return NULL; }
+
     void IncRef() { m_count++; }
     void DecRef()
     {
@@ -100,9 +98,6 @@ protected:
 
 private:
     int     m_count;
-
-private:
-    DECLARE_ABSTRACT_CLASS(wxVariantData)
 };
 
 /*
@@ -110,6 +105,10 @@ private:
  * built in.
  */
 
+class WXDLLIMPEXP_FWD_BASE wxVariant;
+
+WX_DECLARE_LIST_WITH_DECL(wxVariant, wxVariantList, class WXDLLIMPEXP_BASE);
+
 class WXDLLIMPEXP_BASE wxVariant: public wxObject
 {
 public:
@@ -147,6 +146,9 @@ public:
     // destroy a reference
     void UnRef();
 
+    // ensure that the data is exclusive to this variant, and not shared
+    bool Unshare();
+
     // Make NULL (i.e. delete the data)
     void MakeNull();
 
@@ -196,19 +198,9 @@ public:
     // wxDateTime
 #if wxUSE_DATETIME
     wxVariant(const wxDateTime& val, const wxString& name = wxEmptyString);
-#if wxUSE_ODBC
-    wxVariant(const DATE_STRUCT* valptr, const wxString& name = wxEmptyString);
-    wxVariant(const TIME_STRUCT* valptr, const wxString& name = wxEmptyString);
-    wxVariant(const TIMESTAMP_STRUCT* valptr, const wxString& name = wxEmptyString);
-#endif
     bool operator== (const wxDateTime& value) const;
     bool operator!= (const wxDateTime& value) const;
     void operator= (const wxDateTime& value) ;
-#if wxUSE_ODBC
-    void operator= (const DATE_STRUCT* value) ;
-    void operator= (const TIME_STRUCT* value) ;
-    void operator= (const TIMESTAMP_STRUCT* value) ;
-#endif
     inline operator wxDateTime () const { return GetDateTime(); }
     wxDateTime GetDateTime() const;
 #endif
@@ -291,14 +283,14 @@ public:
     // list operations
     // ------------------------------
 
-    wxVariant(const wxList& val, const wxString& name = wxEmptyString); // List of variants
-    bool operator== (const wxList& value) const;
-    bool operator!= (const wxList& value) const;
-    void operator= (const wxList& value) ;
+    wxVariant(const wxVariantList& val, const wxString& name = wxEmptyString); // List of variants
+    bool operator== (const wxVariantList& value) const;
+    bool operator!= (const wxVariantList& value) const;
+    void operator= (const wxVariantList& value) ;
     // Treat a list variant as an array
     wxVariant operator[] (size_t idx) const;
     wxVariant& operator[] (size_t idx) ;
-    wxList& GetList() const ;
+    wxVariantList& GetList() const ;
 
     // Return the number of elements in a list
     size_t GetCount() const;
@@ -366,16 +358,13 @@ public:\
 \
     virtual wxString GetType() const; \
     virtual wxClassInfo* GetValueClassInfo(); \
+\
+    virtual wxVariantData* Clone() const { return new classname##VariantData(m_value); } \
 \
 protected:\
     classname m_value; \
-\
-private: \
-    DECLARE_CLASS(classname##VariantData) \
 };\
 \
-IMPLEMENT_CLASS(classname##VariantData, wxVariantData)\
-\
 wxString classname##VariantData::GetType() const\
 {\
     return m_value.GetClassInfo()->GetClassName();\
@@ -388,7 +377,7 @@ wxClassInfo* classname##VariantData::GetValueClassInfo()\
 \
 expdecl classname& operator << ( classname &value, const wxVariant &variant )\
 {\
-    wxASSERT( wxIsKindOf( variant.GetData(), classname##VariantData ) );\
+    wxASSERT( variant.GetType() == #classname );\
     \
     classname##VariantData *data = (classname##VariantData*) variant.GetData();\
     value = data->GetValue();\
@@ -409,7 +398,7 @@ IMPLEMENT_VARIANT_OBJECT_EXPORTED_NO_EQ(classname,wxEMPTY_PARAMETER_VALUE expdec
 \
 bool classname##VariantData::Eq(wxVariantData& data) const \
 {\
-    wxASSERT( wxIsKindOf((&data), classname##VariantData) );\
+    wxASSERT( GetType() == data.GetType() );\
 \
     classname##VariantData & otherData = (classname##VariantData &) data;\
 \
@@ -426,7 +415,7 @@ IMPLEMENT_VARIANT_OBJECT_EXPORTED_NO_EQ(classname,wxEMPTY_PARAMETER_VALUE expdec
 \
 bool classname##VariantData::Eq(wxVariantData& data) const \
 {\
-    wxASSERT( wxIsKindOf((&data), classname##VariantData) );\
+    wxASSERT( GetType() == data.GetType() );\
 \
     classname##VariantData & otherData = (classname##VariantData &) data;\
 \
@@ -442,6 +431,9 @@ bool classname##VariantData::Eq(wxVariantData& data) const \
     ((classname*)(var.IsValueKindOf(&classname::ms_classInfo) ?\
                   var.GetWxObjectPtr() : NULL));
 
+// Replacement for using wxDynamicCast on a wxVariantData object
+#define wxDynamicCastVariantData(data, classname) dynamic_cast<classname*>(data)
+
 extern wxVariant WXDLLIMPEXP_BASE wxNullVariant;
 
 #endif // wxUSE_VARIANT