+#define EMPTY_PARAMETER_VALUE
+
+#define DECLARE_VARIANT_OBJECT(classname) \
+ DECLARE_VARIANT_OBJECT_EXPORTED(classname,EMPTY_PARAMETER_VALUE)
+
+#define DECLARE_VARIANT_OBJECT_EXPORTED(classname,expdecl) \
+expdecl classname& operator << ( classname &object, const wxVariant &variant ); \
+expdecl wxVariant& operator << ( wxVariant &variant, const classname &object );
+
+#define IMPLEMENT_VARIANT_OBJECT(classname) \
+ IMPLEMENT_VARIANT_OBJECT_EXPORTED(classname,EMPTY_PARAMETER_VALUE)
+
+#define IMPLEMENT_VARIANT_OBJECT_EXPORTED_NO_EQ(classname,expdecl) \
+class classname##VariantData: public wxVariantData \
+{ \
+public:\
+ classname##VariantData() {} \
+ classname##VariantData( const classname &value ) { m_value = value; } \
+\
+ classname &GetValue() { return m_value; } \
+\
+ virtual bool Eq(wxVariantData& data) const; \
+\
+ virtual wxString GetType() const; \
+ virtual wxClassInfo* GetValueClassInfo(); \
+\
+protected:\
+ classname m_value; \
+\
+private: \
+ DECLARE_CLASS(classname##VariantData) \
+};\
+\
+IMPLEMENT_CLASS(classname##VariantData, wxVariantData)\
+\
+wxString classname##VariantData::GetType() const\
+{\
+ return m_value.GetClassInfo()->GetClassName();\
+}\
+\
+wxClassInfo* classname##VariantData::GetValueClassInfo()\
+{\
+ return m_value.GetClassInfo();\
+}\
+\
+expdecl classname& operator << ( classname &value, const wxVariant &variant )\
+{\
+ wxASSERT( wxIsKindOf( variant.GetData(), classname##VariantData ) );\
+ \
+ classname##VariantData *data = (classname##VariantData*) variant.GetData();\
+ value = data->GetValue();\
+ return value;\
+}\
+\
+expdecl wxVariant& operator << ( wxVariant &variant, const classname &value )\
+{\
+ classname##VariantData *data = new classname##VariantData( value );\
+ variant.SetData( data );\
+ return variant;\
+}
+
+// implements a wxVariantData-derived class using for the Eq() method the operator==
+// which must have been provided by "classname"
+#define IMPLEMENT_VARIANT_OBJECT_EXPORTED(classname,expdecl) \
+IMPLEMENT_VARIANT_OBJECT_EXPORTED_NO_EQ(classname,expdecl) \
+\
+bool classname##VariantData::Eq(wxVariantData& data) const \
+{\
+ wxASSERT( wxIsKindOf((&data), classname##VariantData) );\
+\
+ classname##VariantData & otherData = (classname##VariantData &) data;\
+\
+ return otherData.m_value == m_value;\
+}\
+
+
+// implements a wxVariantData-derived class using for the Eq() method a shallow
+// comparison (through wxObject::IsRefTo function)
+#define IMPLEMENT_VARIANT_OBJECT_EXPORTED_SHALLOWCMP(classname,expdecl) \
+IMPLEMENT_VARIANT_OBJECT_EXPORTED_NO_EQ(classname,expdecl) \
+\
+bool classname##VariantData::Eq(wxVariantData& data) const \
+{\
+ wxASSERT( wxIsKindOf((&data), classname##VariantData) );\
+\
+ classname##VariantData & otherData = (classname##VariantData &) data;\
+\
+ return (otherData.m_value.IsRefTo(&m_value));\
+}\
+
+
+// Since we want type safety wxVariant we need to fetch and dynamic_cast
+// in a seemingly safe way so the compiler can check, so we define
+// a dynamic_cast /wxDynamicCast analogue.
+
+#define wxGetVariantCast(var,classname) \
+ ((classname*)(var.IsValueKindOf(&classname::ms_classInfo) ?\
+ var.GetWxObjectPtr() : NULL));
+
+extern wxVariant WXDLLIMPEXP_BASE wxNullVariant;
+
+#endif // wxUSE_VARIANT
+
+#endif // _WX_VARIANT_H_
projects / wxWidgets.git / blobdiff