Make SaveFile and LoadFile virtual so they can be overridden

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

diff --git a/include/wx/variant.h b/include/wx/variant.h
index 0e3e71f195c2c43a76ecfd553bab27ae2e26001c..a0341750e419ec456769a262af60a0dbfc7c29a8 100644 (file)
--- a/include/wx/variant.h
+++ b/include/wx/variant.h
@@ -20,6 +20,7 @@
 #include "wx/string.h"
 #include "wx/arrstr.h"
 #include "wx/list.h"
+#include "wx/cpp.h"
 
 #if wxUSE_DATETIME
     #include "wx/datetime.h"
@@ -214,28 +215,60 @@ public:
 
     // wxString
     wxVariant(const wxString& val, const wxString& name = wxEmptyString);
-    wxVariant(const wxChar* val, const wxString& name = wxEmptyString); // Necessary or VC++ assumes bool!
+    // these overloads are necessary to prevent the compiler from using bool
+    // version instead of wxString one:
+    wxVariant(const char* val, const wxString& name = wxEmptyString);
+    wxVariant(const wchar_t* val, const wxString& name = wxEmptyString);
+    wxVariant(const wxCStrData& val, const wxString& name = wxEmptyString);
+    wxVariant(const wxCharBuffer& val, const wxString& name = wxEmptyString);
+    wxVariant(const wxWCharBuffer& val, const wxString& name = wxEmptyString);
+
     bool operator== (const wxString& value) const;
     bool operator!= (const wxString& value) const;
-    void operator= (const wxString& value) ;
-    void operator= (const wxChar* value) ; // Necessary or VC++ assumes bool!
+    wxVariant& operator=(const wxString& value);
+    // these overloads are necessary to prevent the compiler from using bool
+    // version instead of wxString one:
+    wxVariant& operator=(const char* value)
+        { return *this = wxString(value); }
+    wxVariant& operator=(const wchar_t* value)
+        { return *this = wxString(value); }
+    wxVariant& operator=(const wxCStrData& value)
+        { return *this = value.AsString(); }
+    template<typename T>
+    wxVariant& operator=(const wxCharTypeBuffer<T>& value)
+        { return *this = value.data(); }
+
     inline operator wxString () const {  return MakeString(); }
     wxString GetString() const;
 
-    // wxChar
-    wxVariant(wxChar val, const wxString& name = wxEmptyString);
-    bool operator== (wxChar value) const;
-    bool operator!= (wxChar value) const;
-    void operator= (wxChar value) ;
-    inline operator wxChar () const { return GetChar(); }
-    wxChar GetChar() const ;
+    // wxUniChar
+    wxVariant(const wxUniChar& val, const wxString& name = wxEmptyString);
+    wxVariant(const wxUniCharRef& val, const wxString& name = wxEmptyString);
+    wxVariant(char val, const wxString& name = wxEmptyString);
+    wxVariant(wchar_t val, const wxString& name = wxEmptyString);
+    bool operator==(const wxUniChar& value) const;
+    bool operator==(const wxUniCharRef& value) const { return *this == wxUniChar(value); }
+    bool operator==(char value) const { return *this == wxUniChar(value); }
+    bool operator==(wchar_t value) const { return *this == wxUniChar(value); }
+    bool operator!=(const wxUniChar& value) const { return !(*this == value); }
+    bool operator!=(const wxUniCharRef& value) const { return !(*this == value); }
+    bool operator!=(char value) const { return !(*this == value); }
+    bool operator!=(wchar_t value) const { return !(*this == value); }
+    wxVariant& operator=(const wxUniChar& value);
+    wxVariant& operator=(const wxUniCharRef& value) { return *this = wxUniChar(value); }
+    wxVariant& operator=(char value) { return *this = wxUniChar(value); }
+    wxVariant& operator=(wchar_t value) { return *this = wxUniChar(value); }
+    operator wxUniChar() const { return GetChar(); }
+    operator char() const { return GetChar(); }
+    operator wchar_t() const { return GetChar(); }
+    wxUniChar GetChar() const;
 
     // wxArrayString
     wxVariant(const wxArrayString& val, const wxString& name = wxEmptyString);
     bool operator== (const wxArrayString& value) const;
     bool operator!= (const wxArrayString& value) const;
     void operator= (const wxArrayString& value);
-    inline operator wxArrayString () const { return GetArrayString(); }
+    operator wxArrayString () const { return GetArrayString(); }
     wxArrayString GetArrayString() const;
 
     // void*
@@ -243,7 +276,7 @@ public:
     bool operator== (void* value) const;
     bool operator!= (void* value) const;
     void operator= (void* value);
-    inline operator void* () const {  return GetVoidPtr(); }
+    operator void* () const {  return GetVoidPtr(); }
     void* GetVoidPtr() const;
 
     // wxObject*
@@ -254,14 +287,6 @@ public:
     wxObject* GetWxObjectPtr() const;
 
 
-#if WXWIN_COMPATIBILITY_2_4
-    wxDEPRECATED( wxVariant(const wxStringList& val, const wxString& name = wxEmptyString) );
-    wxDEPRECATED( bool operator== (const wxStringList& value) const );
-    wxDEPRECATED( bool operator!= (const wxStringList& value) const );
-    wxDEPRECATED( void operator= (const wxStringList& value) );
-    wxDEPRECATED( wxStringList& GetStringList() const );
-#endif
-
     // ------------------------------
     // list operations
     // ------------------------------
@@ -302,7 +327,9 @@ public:
     bool Convert(bool* value) const;
     bool Convert(double* value) const;
     bool Convert(wxString* value) const;
-    bool Convert(wxChar* value) const;
+    bool Convert(wxUniChar* value) const;
+    bool Convert(char* value) const;
+    bool Convert(wchar_t* value) const;
 #if wxUSE_DATETIME
     bool Convert(wxDateTime* value) const;
 #endif // wxUSE_DATETIME
@@ -316,23 +343,17 @@ private:
     DECLARE_DYNAMIC_CLASS(wxVariant)
 };
 
-/* Fake macro parameter value */
-#ifdef EMPTY_PARAMETER_VALUE
-    #undef EMPTY_PARAMETER_VALUE
-#endif
-#define EMPTY_PARAMETER_VALUE
-
 #define DECLARE_VARIANT_OBJECT(classname) \
-    DECLARE_VARIANT_OBJECT_EXPORTED(classname,EMPTY_PARAMETER_VALUE)
+    DECLARE_VARIANT_OBJECT_EXPORTED(classname, wxEMPTY_PARAMETER_VALUE)
 
 #define DECLARE_VARIANT_OBJECT_EXPORTED(classname,expdecl) \
-classname& expdecl operator << ( classname &object, const wxVariant &variant ); \
-wxVariant& expdecl operator << ( wxVariant &variant, const classname &object );
+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)
+    IMPLEMENT_VARIANT_OBJECT_EXPORTED(classname, wxEMPTY_PARAMETER_VALUE)
 
-#define IMPLEMENT_VARIANT_OBJECT_EXPORTED(classname,expdecl) \
+#define IMPLEMENT_VARIANT_OBJECT_EXPORTED_NO_EQ(classname,expdecl) \
 class classname##VariantData: public wxVariantData \
 { \
 public:\
@@ -355,15 +376,6 @@ private: \
 \
 IMPLEMENT_CLASS(classname##VariantData, wxVariantData)\
 \
-bool classname##VariantData::Eq(wxVariantData& data) const \
-{\
-    wxASSERT( wxIsKindOf((&data), classname##VariantData) );\
-\
-    classname##VariantData & otherData = (classname##VariantData &) data;\
-\
-    return (otherData.m_value == m_value);\
-}\
-\
 wxString classname##VariantData::GetType() const\
 {\
     return m_value.GetClassInfo()->GetClassName();\
@@ -374,7 +386,7 @@ wxClassInfo* classname##VariantData::GetValueClassInfo()\
     return m_value.GetClassInfo();\
 }\
 \
-classname& expdecl operator << ( classname &value, const wxVariant &variant )\
+expdecl classname& operator << ( classname &value, const wxVariant &variant )\
 {\
     wxASSERT( wxIsKindOf( variant.GetData(), classname##VariantData ) );\
     \
@@ -383,13 +395,45 @@ classname& expdecl operator << ( classname &value, const wxVariant &variant )\
     return value;\
 }\
 \
-wxVariant& expdecl operator << ( wxVariant &variant, const classname &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,wxEMPTY_PARAMETER_VALUE 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::IsSameAs function)
+#define IMPLEMENT_VARIANT_OBJECT_SHALLOWCMP(classname) \
+    IMPLEMENT_VARIANT_OBJECT_EXPORTED_SHALLOWCMP(classname, wxEMPTY_PARAMETER_VALUE)
+#define IMPLEMENT_VARIANT_OBJECT_EXPORTED_SHALLOWCMP(classname,expdecl) \
+IMPLEMENT_VARIANT_OBJECT_EXPORTED_NO_EQ(classname,wxEMPTY_PARAMETER_VALUE expdecl) \
+\
+bool classname##VariantData::Eq(wxVariantData& data) const \
+{\
+    wxASSERT( wxIsKindOf((&data), classname##VariantData) );\
+\
+    classname##VariantData & otherData = (classname##VariantData &) data;\
+\
+    return (otherData.m_value.IsSameAs(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.