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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Data;
using System.Windows.Markup;
using System.Xml;
namespace Tango.Core.Components
{
public static class FrameworkElementSerializer
{
private class BindingConvertor : ExpressionConverter
{
public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
{
if (destinationType == typeof(MarkupExtension))
return true;
else return false;
}
public override object ConvertTo(ITypeDescriptorContext context,
System.Globalization.CultureInfo culture,
object value, Type destinationType)
{
if (destinationType == typeof(MarkupExtension))
{
BindingExpression bindingExpression = value as BindingExpression;
if (bindingExpression == null)
throw new Exception();
return bindingExpression.ParentBinding;
}
return base.ConvertTo(context, culture, value, destinationType);
}
public static void Register<T, TC>()
{
Attribute[] attr = new Attribute[1];
TypeConverterAttribute vConv = new TypeConverterAttribute(typeof(TC));
attr[0] = vConv;
TypeDescriptor.AddAttributes(typeof(T), attr);
}
}
static FrameworkElementSerializer()
{
BindingConvertor.Register<BindingExpression, BindingConvertor>();
}
/// <summary>
/// Clones the specified element.
/// </summary>
/// <param name="element">The element.</param>
/// <returns></returns>
public static FrameworkElement Clone(FrameworkElement element)
{
var sb = new StringBuilder();
var writer = XmlWriter.Create(sb, new XmlWriterSettings
{
Indent = true,
ConformanceLevel = ConformanceLevel.Fragment,
OmitXmlDeclaration = true,
NamespaceHandling = NamespaceHandling.OmitDuplicates,
});
var mgr = new XamlDesignerSerializationManager(writer);
// HERE BE MAGIC!!!
mgr.XamlWriterMode = XamlWriterMode.Expression;
// THERE WERE MAGIC!!!
XamlWriter.Save(element, mgr);
String xaml = sb.ToString();
StringReader stringReader = new StringReader(xaml);
XmlReader xmlReader = XmlReader.Create(stringReader);
FrameworkElement cloned = (FrameworkElement)XamlReader.Load(xmlReader) as FrameworkElement;
return cloned;
}
/// <summary>
/// Serializes the specified element.
/// </summary>
/// <param name="element">The element.</param>
/// <returns></returns>
public static String Serialize(FrameworkElement element)
{
var sb = new StringBuilder();
var writer = XmlWriter.Create(sb, new XmlWriterSettings
{
Indent = true,
ConformanceLevel = ConformanceLevel.Fragment,
OmitXmlDeclaration = true,
NamespaceHandling = NamespaceHandling.OmitDuplicates,
});
var mgr = new XamlDesignerSerializationManager(writer);
// HERE BE MAGIC!!!
mgr.XamlWriterMode = XamlWriterMode.Expression;
// THERE WERE MAGIC!!!
XamlWriter.Save(element, mgr);
String xaml = sb.ToString();
return xaml;
}
/// <summary>
/// Deserializes the specified xaml.
/// </summary>
/// <param name="xaml">The xaml.</param>
/// <returns></returns>
public static FrameworkElement Deserialize(String xaml)
{
StringReader stringReader = new StringReader(xaml);
XmlReader xmlReader = XmlReader.Create(stringReader);
FrameworkElement cloned = (FrameworkElement)XamlReader.Load(xmlReader) as FrameworkElement;
return cloned;
}
}
}
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