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//
// Copyright (C) 2010 Novell Inc. http://novell.com
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Reflection;
using System.Xaml;
namespace System.Windows.Markup
{
[System.Runtime.CompilerServices.TypeForwardedFrom (Consts.AssemblyWindowsBase)]
public abstract class ValueSerializer
{
public static ValueSerializer GetSerializerFor (PropertyDescriptor descriptor)
{
return GetSerializerFor (descriptor, null);
}
public static ValueSerializer GetSerializerFor (Type type)
{
return GetSerializerFor (type, null);
}
public static ValueSerializer GetSerializerFor (PropertyDescriptor descriptor, IValueSerializerContext context)
{
throw new NotImplementedException ();
}
public static ValueSerializer GetSerializerFor (Type type, IValueSerializerContext context)
{
if (type == null)
throw new ArgumentNullException ("type");
// weird, but .NET also throws NIE(!)
if (context != null)
throw new NotImplementedException ();
// MarkupExtension is serialized without ValueSerializer.
if (typeof (MarkupExtension).IsAssignableFrom (type))
return null;
var tc = TypeDescriptor.GetConverter (type);
if (tc != null && tc.GetType () != typeof (TypeConverter))
return new TypeConverterValueSerializer (type);
return null;
}
// instance members
public virtual bool CanConvertFromString (string value, IValueSerializerContext context)
{
return false;
}
public virtual bool CanConvertToString (object value, IValueSerializerContext context)
{
return false;
}
public virtual object ConvertFromString (string value, IValueSerializerContext context)
{
throw new NotSupportedException (String.Format ("Conversion from string '{0}' is not supported", value));
}
public virtual string ConvertToString (object value, IValueSerializerContext context)
{
throw new NotSupportedException (String.Format ("Conversion from '{0}' to string is not supported", value != null ? value.GetType ().Name : "(null)"));
}
protected Exception GetConvertFromException (object value)
{
throw new NotImplementedException ();
}
protected Exception GetConvertToException (object value, Type destinationType)
{
throw new NotImplementedException ();
}
public virtual IEnumerable<Type> TypeReferences (object value, IValueSerializerContext context)
{
throw new NotImplementedException ();
}
}
internal class StringValueSerializer : ValueSerializer
{
public override bool CanConvertFromString (string value, IValueSerializerContext context)
{
return true;
}
public override bool CanConvertToString (object value, IValueSerializerContext context)
{
return true;
}
public override object ConvertFromString (string value, IValueSerializerContext context)
{
throw new NotImplementedException ();
}
public override string ConvertToString (object value, IValueSerializerContext context)
{
return (string) value;
}
public override IEnumerable<Type> TypeReferences (object value, IValueSerializerContext context)
{
throw new NotImplementedException ();
}
}
#region Internal implementations.
internal class TypeConverterValueSerializer<T> : TypeConverterValueSerializer
{
public TypeConverterValueSerializer ()
: base (typeof (T))
{
}
}
internal class TypeConverterValueSerializer : ValueSerializer
{
public TypeConverterValueSerializer (Type type)
{
c = TypeDescriptor.GetConverter (type);
}
TypeConverter c;
public override bool CanConvertFromString (string value, IValueSerializerContext context)
{
return c.CanConvertFrom (context, typeof (string));
}
public override bool CanConvertToString (object value, IValueSerializerContext context)
{
return c.CanConvertTo (context, typeof (string));
}
public override object ConvertFromString (string value, IValueSerializerContext context)
{
return c.ConvertFromInvariantString (context, value);
}
public override string ConvertToString (object value, IValueSerializerContext context)
{
return value == null ? String.Empty : c.ConvertToInvariantString (context, value);
}
public override IEnumerable<Type> TypeReferences (object value, IValueSerializerContext context)
{
throw new NotImplementedException ();
}
}
#endregion
}
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