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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.Activities.XamlIntegration
{
using System;
using System.ComponentModel;
using System.Windows.Markup;
using System.Xaml;
public sealed class ActivityWithResultValueSerializer : ValueSerializer
{
static ActivityWithResultValueSerializer valueSerializer;
public override bool CanConvertToString(object value, IValueSerializerContext context)
{
if (AttachablePropertyServices.GetAttachedPropertyCount(value) > 0)
{
return false;
}
else if (value != null &&
value is IValueSerializableExpression &&
((IValueSerializableExpression)value).CanConvertToString(context))
{
return true;
}
return false;
}
public override string ConvertToString(object value, IValueSerializerContext context)
{
IValueSerializableExpression ivsExpr;
ivsExpr = value as IValueSerializableExpression;
if (ivsExpr == null)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.CannotSerializeExpression(value.GetType())));
}
return ivsExpr.ConvertToString(context);
}
internal static bool CanConvertToStringWrapper(object value, IValueSerializerContext context)
{
if (valueSerializer == null)
{
valueSerializer = new ActivityWithResultValueSerializer();
}
return valueSerializer.CanConvertToString(value, context);
}
internal static string ConvertToStringWrapper(object value, IValueSerializerContext context)
{
if (valueSerializer == null)
{
valueSerializer = new ActivityWithResultValueSerializer();
}
return valueSerializer.ConvertToString(value, context);
}
}
}
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