public static object ConvertObject(XamlParser parser, XamlObjectElement element, Type dest_type, TypeConverter converter, string prop_name, object val)
{
// Should i return default(T) if property.PropertyType is a valuetype?
if (val == null)
{
return(val);
}
if (dest_type.IsAssignableFrom(val.GetType()))
{
return(val);
}
if (dest_type == typeof(string))
{
return(val.ToString());
}
if (converter == null || ConverterIsBlackListed(converter))
{
converter = new XamlTypeConverter(parser, element, prop_name, dest_type);
}
return(converter.ConvertFrom(null, Helper.DefaultCulture, val));
}
private void AddChildObject(XamlObjectElement obj)
{
object value = obj.Object;
MutableObject mutable = value as MutableObject;
if (mutable != null)
{
value = mutable.Object;
}
IList list = Object as IList;
if (list != null)
{
list.Add(value);
return;
}
IDictionary dict = Object as IDictionary;
if (dict != null)
{
dict.Add(obj.GetDictionaryKey(), value);
return;
}
XamlReflectionPropertySetter content_property = FindContentProperty();
if (content_property == null)
{
throw Parser.ParseException("Unable to add element {0} to element {1}.", obj.Name, Name);
}
content_property.SetValue(value);
}
private static Type GetTargetType(XamlTypeConverter converter)
{
XamlElement p = converter.parser.CurrentElement.Parent;
XamlObjectElement parent = p as XamlObjectElement;
if (p == null)
{
throw new XamlParseException("Attempting to create a DP from an item without a target property.");
}
if (parent == null)
{
parent = p.Parent as XamlObjectElement;
}
if (parent == null)
{
throw new XamlParseException("Attempting to create a DP from an item without a target property.");
}
Style s = parent.Object as Style;
if (s == null)
{
throw new XamlParseException("Attempting to create a DP from a non style object.");
}
return(s.TargetType);
}
public static XamlReflectionPropertySetter Create(XamlObjectElement element, object target, Accessors accessors)
{
if (accessors == null)
{
return(null);
}
return(new XamlReflectionPropertySetter(element, target, accessors));
}
public static XamlAttachedPropertySetter Create(XamlObjectElement element, Accessors accessors)
{
if (accessors == null)
{
return(null);
}
return(new XamlAttachedPropertySetter(element, accessors));
}
static Accessors CreateAttachedAccessors(XamlObjectElement parent, Type t, string name)
{
// See comment in XamlReflectionPropertyForName to see why we special case the case
// where there's a DP but no static getter/setter methods.
if (string.IsNullOrEmpty(name))
{
return(null);
}
Func <TypeConverter> converter = null;
MethodInfo getter = ResolveAttachedPropertyGetter(name, t);
MethodInfo setter = ResolveAttachedPropertySetter(name, t, getter == null ? null : getter.ReturnType);
if (getter != null)
{
converter = Helper.GetConverterCreatorFor(getter, getter.ReturnType);
}
if ((getter == null && setter == null) || (setter == null && !IsCollectionType(getter.ReturnType)))
{
if (Deployment.Current.MajorVersion >= 4)
{
// The SL4+ parser will not allow you to set a Binding on DP with no CLR wrapper
return(null);
}
// The old parser will allow you to set a Binding on DP with no CLR wrapper
DependencyProperty dp;
Types.Ensure(t);
if (DependencyProperty.TryLookup(Deployment.Current.Types.TypeToKind(t), name, out dp) && dp.IsAttached)
{
return(new Accessors(
(o) => { throw new XamlParseException(string.Format("The property {0} was not found on element {1}.", name, t.Name)); },
(o, a) => { throw new XamlParseException(string.Format("The property {0} was not found on element {1}.", name, t.Name)); },
dp.PropertyType,
dp.Name,
converter,
dp.DeclaringType
));
}
else
{
return(null);
}
}
return(new Accessors(
CreateAttachedGetter(getter),
CreateAttachedSetter(setter),
getter != null ? getter.ReturnType : setter.GetParameters() [1].ParameterType,
name,
converter,
getter != null ? getter.DeclaringType : setter.DeclaringType
));
}
XamlReflectionPropertySetter(XamlObjectElement element, object target, Accessors accessors) : base(element, accessors.Name, accessors.ConverterCreator == null ? null : accessors.ConverterCreator())
{
this.target = target;
this.accessors = accessors;
if (target is MutableObject)
{
is_mutable = true;
}
}
private void AddToCollection(XamlObjectElement obj, object value)
{
IList list = accessors.Getter(target) as IList;
if (list == null)
{
throw Parser.ParseException("Collection property in non collection type.");
}
list.Add(value);
}
public override void SetValue(XamlObjectElement obj, object value)
{
MutableObject mutable = value as MutableObject;
if (mutable != null)
{
value = mutable.Object;
}
Binding binding = value as Binding;
if (binding != null && SetBinding(binding, Target))
{
return;
}
if (!typeof(TemplateBindingExpression).IsAssignableFrom(Type))
{
TemplateBindingExpression tb = value as TemplateBindingExpression;
if (tb != null)
{
SetTemplateBinding(tb, Target);
return;
}
}
// We do this before lists to cover the case where you are setting a list to a list or
// a resource dictionary to a resource dictionary, ect
// as opposed to adding items to the list or dictionary.
//
// null is a legal value here because they may have done something like foo="{x:Null}"
//
if (value == null || Type.IsAssignableFrom(value.GetType()))
{
accessors.Setter(Target, ConvertValue(Type, value));
return;
}
if (typeof(IList).IsAssignableFrom(Type))
{
AddToCollection(obj, value);
return;
}
if (typeof(IDictionary).IsAssignableFrom(Type))
{
AddToDictionary(obj, value);
return;
}
throw Parser.ParseException("Unable to set property {0} to value {1}.", Name, value);
}
public override void SetValue(XamlObjectElement obj, object value)
{
var mutable = value as MutableObject;
if (mutable != null)
{
value = mutable.Object;
}
if (!typeof(Binding).IsAssignableFrom(Type))
{
Binding binding = value as Binding;
if (binding != null)
{
SetBinding(binding, Element.Object);
return;
}
}
if (!typeof(TemplateBindingExpression).IsAssignableFrom(Type))
{
TemplateBindingExpression tb = value as TemplateBindingExpression;
if (tb != null)
{
SetTemplateBinding(tb, obj.Object);
return;
}
}
if (value == null || Type.IsAssignableFrom(value.GetType()))
{
Accessors.Setter(Element.Object, ConvertValue(Type, value));
return;
}
if (typeof(IList).IsAssignableFrom(Type))
{
AddToCollection(value);
return;
}
throw new XamlParseException(
string.Format("XamlAttachedPropertySetter.SetValue: Could not set value '{0}' to the attached property '{1}.{2}'",
value,
Accessors.DeclaringType,
Accessors.Name)
);
}
public override void AddChild(XamlElement child)
{
if (!set_on_add)
{
return;
}
XamlObjectElement element = child as XamlObjectElement;
if (element == null)
{
return;
}
Setter.SetValue(element, element.Object);
}
private void AddToDictionary(XamlObjectElement obj, object value)
{
IDictionary rd = accessors.Getter(target) as IDictionary;
if (rd == null)
{
throw Parser.ParseException("Collection property in non collection type.");
}
string key = obj.GetDictionaryKey();
if (key == null)
{
throw Parser.ParseException("You must specify an x:Key or x:Name for elements in a ResourceDictionary");
}
rd.Add(key, value);
}
public override void SetValue(XamlObjectElement obj, object value)
{
if (value == null)
{
throw Parser.ParseException("Setting Name value to null.");
}
string name = value as string;
if (name == null)
{
throw Parser.ParseException("Unable to set Name property to type {1}.", value.GetType());
}
obj.X_Name = name;
if (!target.SetNameOnScope(name, Parser.NameScope))
{
throw Parser.ParseException("Unable to set Name '{0}' on element '{1}'.", name, Element.Name);
}
}
public XamlNamePropertySetter (XamlObjectElement element, DependencyObject target) : base (element, "Name", null)
{
this.target = target;
}
public XamlReflectionEventSetter (XamlObjectElement element, object target, EventInfo evnt) : base (element, evnt.Name,
Helper.GetConverterFor (evnt, evnt.EventHandlerType))
{
this.target = target;
this.evnt = evnt;
}
private void AddToCollection (XamlObjectElement obj, object value)
{
IList list = accessors.Getter (target) as IList;
if (list == null) {
throw Parser.ParseException ("Collection property in non collection type.");
}
list.Add (value);
}
XamlReflectionPropertySetter (XamlObjectElement element, object target, Accessors accessors) : base (element, accessors.Name, accessors.ConverterCreator == null ? null : accessors.ConverterCreator ())
{
this.target = target;
this.accessors = accessors;
if (target is MutableObject)
is_mutable = true;
}
public abstract void SetValue (XamlObjectElement obj, object value);
public override void SetValue(XamlObjectElement obj, object value)
{
MethodInfo invoker_info = evnt.EventHandlerType.GetMethod("Invoke");
ParameterInfo [] event_params = invoker_info.GetParameters();
string handler_name = value as string;
var subscriber = Parser.TopElement;
if (subscriber == null)
{
throw Parser.ParseException("Attempt to set an event handler on an invalid object.");
}
if (String.IsNullOrEmpty(handler_name))
{
throw Parser.ParseException("Attmept to set an event handler to null.");
}
Delegate d = null;
MethodInfo [] methods = subscriber.GetType().GetMethods(XamlParser.EVENT_BINDING_FLAGS);
MethodInfo candidate = null;
bool name_match = false;
for (int i = 0; i < methods.Length; i++)
{
MethodInfo m = methods [i];
ParameterInfo [] parameters;
if (m.Name != handler_name)
{
continue;
}
if (name_match)
{
throw Parser.ParseException("Multiple event handlers found with same name.");
}
name_match = true;
parameters = m.GetParameters();
if (parameters.Length != event_params.Length)
{
continue;
}
bool match = true;
for (int p = 0; p < parameters.Length; p++)
{
if (!event_params [p].ParameterType.IsSubclassOf(parameters [p].ParameterType) && parameters [p].ParameterType != event_params [p].ParameterType)
{
Console.Error.WriteLine("mismatch: {0} and {1}", parameters [p].ParameterType, event_params [p].ParameterType);
match = false;
break;
}
}
if (!match)
{
continue;
}
if (candidate != null)
{
throw Parser.ParseException("Multiple event handler candidates found for event {0}", Name);
}
candidate = m;
}
if (candidate == null)
{
throw Parser.ParseException("Event handler not found for event {0}.", Name);
}
d = Delegate.CreateDelegate(evnt.EventHandlerType, subscriber, candidate, false);
if (d == null)
{
throw Parser.ParseException("Unable to create event delegate for event {0}.", Name);
}
evnt.AddEventHandler(target, d);
}
public XamlNamePropertySetter(XamlObjectElement element, DependencyObject target) : base(element, "Name", null)
{
this.target = target;
}
public static XamlAttachedPropertySetter Create (XamlObjectElement element, Accessors accessors)
{
if (accessors == null)
return null;
return new XamlAttachedPropertySetter (element, accessors);
}
protected XamlPropertySetter(XamlObjectElement element, string name, TypeConverter converter)
{
Element = element;
Name = name;
Converter = converter;
}
XamlAttachedPropertySetter(XamlObjectElement element, Accessors accessors)
: base(element, accessors.Name, accessors.ConverterCreator == null ? null : accessors.ConverterCreator())
{
Accessors = accessors;
}
public override void SetValue (XamlObjectElement obj, object value)
{
var mutable = value as MutableObject;
if (mutable != null)
value = mutable.Object;
if (!typeof (Binding).IsAssignableFrom (Type)) {
Binding binding = value as Binding;
if (binding != null) {
SetBinding (binding, Element.Object);
return;
}
}
if (!typeof (TemplateBindingExpression).IsAssignableFrom (Type)) {
TemplateBindingExpression tb = value as TemplateBindingExpression;
if (tb != null) {
SetTemplateBinding (tb, obj.Object);
return;
}
}
if (value == null || Type.IsAssignableFrom (value.GetType ())) {
Accessors.Setter (Element.Object, ConvertValue (Type, value));
return;
}
if (typeof (IList).IsAssignableFrom (Type)) {
AddToCollection (value);
return;
}
throw new XamlParseException (
string.Format ("XamlAttachedPropertySetter.SetValue: Could not set value '{0}' to the attached property '{1}.{2}'",
value,
Accessors.DeclaringType,
Accessors.Name)
);
}
public XamlTypeConverter(XamlParser parser, XamlObjectElement element, string propertyName, Type destinationType) : base(propertyName, destinationType)
{
this.parser = parser;
this.element = element;
}
public override void SetValue (XamlObjectElement obj, object value)
{
// We do this first to cover the case where you are setting a list to a list or
// a resource dictionary to a resource dictionary, binding to a binding, ect
// as opposed to adding items to the list or dictionary.
if (Type.IsAssignableFrom (value.GetType ())) {
prop.SetValue (target, ConvertValue (Type, value), null);
return;
}
{
Binding binding = value as Binding;
if (binding != null) {
SetBinding (binding);
return;
}
}
{
TemplateBindingExpression tb = value as TemplateBindingExpression;
if (tb != null) {
SetTemplateBinding (tb);
return;
}
}
if (typeof (IList).IsAssignableFrom (Type)) {
AddToCollection (obj, value);
return;
}
if (typeof (IDictionary).IsAssignableFrom (Type)) {
AddToDictionary (obj, value);
return;
}
throw Parser.ParseException ("Unable to set property {0} to value {1}.", Name, value);
}
public XamlAttachedPropertySetter (XamlObjectElement element, string name, MethodInfo getter, MethodInfo setter) : base (element, name, Helper.GetConverterFor (setter, getter.ReturnType))
{
this.getter = getter;
this.setter = setter;
}
public SL4MarkupExpressionParser(object target, string attribute_name, XamlParser parser, XamlObjectElement target_element) : base(target, attribute_name)
{
this.parser = parser;
this.target_element = target_element;
}
public XamlReflectionEventSetter(XamlObjectElement element, object target, EventInfo evnt) : base(element, evnt.Name,
Helper.GetConverterFor(evnt, evnt.EventHandlerType))
{
this.target = target;
this.evnt = evnt;
}
internal void RegisterKeyItem (XamlObjectElement element, XamlElement target, string key)
{
IDictionary rd = CurrentDictionary (element);
if (rd == null)
throw ParseException ("Attempt to use x:Key outside of an IDictionary.");
element.X_Key = key;
}
internal void RegisterNamedItem (XamlObjectElement element, string name)
{
IDictionary rd = CurrentDictionary (element);
if (rd != null && element.X_Key != null) {
throw ParseException ("The name already exists in the tree.");
}
if (element.X_Name != null) {
throw ParseException ("Cannot specify both Name and x:Name attributes.");
}
element.X_Name = name;
FrameworkElement fe = element.FrameworkElement;
if (fe != null)
fe.SetNameOnScope (name, NameScope);
}
public XamlReflectionPropertySetter (XamlObjectElement element, object target, PropertyInfo prop) : base (element, prop.Name, Helper.GetConverterFor (prop, prop.PropertyType))
{
this.target = target;
this.prop = prop;
}
private void ParseObjectElement ()
{
Type t = ResolveType ();
if (t == null)
throw ParseException ("Unable to find the type {0}.", reader.LocalName);
object o = InstantiateType (t);
XamlObjectElement element = new XamlObjectElement (this, reader.LocalName, o);
SetElementTemplateScopes (element);
OnElementBegin (element);
ParseElementAttributes (element);
// This is a self closing element ie <Rectangle />
if (reader.IsEmptyElement)
OnElementEnd ();
}
private void AddToDictionary (XamlObjectElement obj, object value)
{
IDictionary rd = prop.GetValue (target, null) as IDictionary;
if (rd == null)
throw Parser.ParseException ("Collection property in non collection type.");
rd.Add (obj.X_Key, value);
}
private void ParseTemplateElement ()
{
Type t = ResolveType ();
if (t == null)
throw ParseException ("Unable to find the type {0}", t);
object o = InstantiateType (t);
XamlObjectElement element = new XamlObjectElement (this, reader.LocalName, o);
OnElementBegin (element);
ParseElementAttributes (element);
string template_xml = reader.ReadInnerXml ();
FrameworkTemplate template = o as FrameworkTemplate;
unsafe {
template.SetXamlBuffer (ParseTemplate, CreateXamlContext (template), template_xml);
}
//
// ReadInnerXml will read our closing </ControlTemplate> tag also, so we manually close things
//
OnElementEnd ();
}
public override void SetValue (XamlObjectElement obj, object value)
{
setter.Invoke (null, new object [] { Element.Object, value });
}
private void ParseTextBlockText (XamlObjectElement block)
{
}
public static XamlReflectionPropertySetter Create (XamlObjectElement element, object target, Accessors accessors)
{
if (accessors == null)
return null;
return new XamlReflectionPropertySetter (element, target, accessors);
}
private void ParseElementAttributes (XamlObjectElement element)
{
if (!reader.HasAttributes)
return;
try {
int ac = reader.AttributeCount;
for (int i = 0; i < reader.AttributeCount; i++) {
reader.MoveToAttribute (i);
ParseAttribute (element);
}
} finally {
// We do this in a finally so error reporting doesn't get all jacked up
reader.MoveToElement();
}
}
public override void SetValue (XamlObjectElement obj, object value)
{
MutableObject mutable = value as MutableObject;
if (mutable != null)
value = mutable.Object;
Binding binding = value as Binding;
if (binding != null && SetBinding (binding, Target))
return;
if (!typeof (TemplateBindingExpression).IsAssignableFrom (Type)) {
TemplateBindingExpression tb = value as TemplateBindingExpression;
if (tb != null) {
SetTemplateBinding (tb, Target);
return;
}
}
// We do this before lists to cover the case where you are setting a list to a list or
// a resource dictionary to a resource dictionary, ect
// as opposed to adding items to the list or dictionary.
//
// null is a legal value here because they may have done something like foo="{x:Null}"
//
if (value == null || Type.IsAssignableFrom (value.GetType ())) {
accessors.Setter (Target, ConvertValue (Type, value));
return;
}
if (typeof (IList).IsAssignableFrom (Type)) {
AddToCollection (obj, value);
return;
}
if (typeof (IDictionary).IsAssignableFrom (Type)) {
AddToDictionary (obj, value);
return;
}
throw Parser.ParseException ("Unable to set property {0} to value {1}.", Name, value);
}
private void ParseAttribute (XamlObjectElement element)
{
if (IsMcAttribute ()) {
ParseMcAttribute (element);
return;
}
if (IsXmlnsMapping ()) {
ParseXmlnsMapping (element);
return;
}
if (IsXAttribute ()) {
ParseXAttribute (element);
return;
}
if (IsXmlDirective ()) {
ParseXmlDirective (element);
return;
}
if (IsIgnorable ()) {
return;
}
XamlPropertySetter prop = element.LookupProperty (reader);
if (prop == null)
throw ParseException ("The property {0} was not found.", reader.LocalName);
object value = ParseAttributeValue (element, prop);
prop.SetValue (value);
}
private void AddToDictionary (XamlObjectElement obj, object value)
{
IDictionary rd = accessors.Getter (target) as IDictionary;
if (rd == null)
throw Parser.ParseException ("Collection property in non collection type.");
string key = obj.GetDictionaryKey ();
if (key == null)
throw Parser.ParseException ("You must specify an x:Key or x:Name for elements in a ResourceDictionary");
rd.Add (key, value);
}
private void ParseXAttribute (XamlObjectElement element)
{
switch (reader.LocalName) {
case "Key":
RegisterKeyItem (element, element.Parent, reader.Value);
return;
case "Name":
RegisterNamedItem (element, reader.Value);
return;
case "Class":
// The class attribute is handled when we initialize the element
return;
default:
throw ParseException ("Unknown x: attribute ({0}).", reader.LocalName);
}
}
public override void SetValue (XamlObjectElement obj, object value)
{
MethodInfo invoker_info = evnt.EventHandlerType.GetMethod ("Invoke");
ParameterInfo [] event_params = invoker_info.GetParameters ();
string handler_name = value as string;
var subscriber = Parser.TopElement;
if (subscriber == null)
throw Parser.ParseException ("Attempt to set an event handler on an invalid object.");
if (String.IsNullOrEmpty (handler_name))
throw Parser.ParseException ("Attmept to set an event handler to null.");
Delegate d = null;
MethodInfo [] methods = subscriber.GetType ().GetMethods (XamlParser.EVENT_BINDING_FLAGS);
MethodInfo candidate = null;
bool name_match = false;
for (int i = 0; i < methods.Length; i++) {
MethodInfo m = methods [i];
ParameterInfo [] parameters;
if (m.Name != handler_name)
continue;
if (name_match)
throw Parser.ParseException ("Multiple event handlers found with same name.");
name_match = true;
parameters = m.GetParameters ();
if (parameters.Length != event_params.Length)
continue;
bool match = true;
for (int p = 0; p < parameters.Length; p++) {
if (!event_params [p].ParameterType.IsSubclassOf (parameters [p].ParameterType) && parameters [p].ParameterType != event_params [p].ParameterType) {
Console.Error.WriteLine ("mismatch: {0} and {1}", parameters [p].ParameterType, event_params [p].ParameterType);
match = false;
break;
}
}
if (!match)
continue;
if (candidate != null)
throw Parser.ParseException ("Multiple event handler candidates found for event {0}", Name);
candidate = m;
}
if (candidate == null)
throw Parser.ParseException ("Event handler not found for event {0}.", Name);
d = Delegate.CreateDelegate (evnt.EventHandlerType, subscriber, candidate, false);
if (d == null)
throw Parser.ParseException ("Unable to create event delegate for event {0}.", Name);
evnt.AddEventHandler (target, d);
}
private object ParseAttributeValue (XamlObjectElement element, XamlPropertySetter property)
{
object value = null;
if (IsMarkupExpression (reader.Value))
value = ParseAttributeMarkup (element, property);
else {
value = XamlTypeConverter.ConvertObject (this, element, property.Type, property.Converter, property.Name, reader.Value);
}
return value;
}
public override void SetValue (XamlObjectElement obj, object value)
{
if (value == null)
throw Parser.ParseException ("Setting Name value to null.");
string name = value as string;
if (name == null)
throw Parser.ParseException ("Unable to set Name property to type {1}.", value.GetType ());
obj.X_Name = name;
if (!target.SetNameOnScope (name, Parser.NameScope))
throw Parser.ParseException ("Unable to set Name '{0}' on element '{1}'.", name, Element.Name);
}
private object ParseAttributeMarkup (XamlObjectElement element, XamlPropertySetter property)
{
MarkupExpressionParser parser = new SL4MarkupExpressionParser (element.Object, property.Name, this, element);
string expression = reader.Value;
object o = parser.ParseExpression (ref expression);
return o;
}
XamlAttachedPropertySetter (XamlObjectElement element, Accessors accessors)
: base (element, accessors.Name, accessors.ConverterCreator == null ? null : accessors.ConverterCreator ())
{
Accessors = accessors;
}
private void SetElementTemplateScopes (XamlObjectElement element)
{
// This whole thing is basically copied from xaml.cpp AddCreatedItem
DependencyObject el_dob = element.Object as DependencyObject;
if (el_dob == null)
return;
// When instantiating a template, some elements are created which are not explicitly
// mentioned in the xaml. Therefore we need to keep walking up the tree until we find
// the last element which we set a value for Control::IsTemplateItem and propagate
// it from there.
XamlElement instance = CurrentElement;
while (instance != null) {
XamlObjectElement oe = element as XamlObjectElement;
if (oe == null) {
instance = instance.Parent;
continue;
}
DependencyObject dob = oe.Object as DependencyObject;
if (dob == null) {
instance = instance.Parent;
continue;
}
if (dob.ReadLocalValue (Control.IsTemplateItemProperty) == null) {
instance = instance.Parent;
continue;
}
el_dob.SetValue (Control.IsTemplateItemProperty, dob.GetValue (Control.IsTemplateItemProperty));
el_dob.TemplateOwner = dob.TemplateOwner;
break;
}
if (instance == null) {
el_dob.SetValue (Control.IsTemplateItemProperty, Context.IsExpandingTemplate);
el_dob.TemplateOwner = Context.TemplateBindingSource;
}
if (el_dob.GetValue (Control.IsTemplateItemProperty) != null) {
UserControl uc = el_dob as UserControl;
if (uc != null) {
// I can't come up with a test to verify this fix. However, it does
// fix a crasher in olympics when trying to play a new video from
// the recommendations list after the curreont video finishes
NameScope ns = NameScope.GetNameScope (uc);
NameScope.SetNameScope (uc.Content, ns);
NameScope.SetNameScope (uc.Resources, ns);
}
NameScope.SetNameScope (el_dob, NameScope);
}
}
protected XamlPropertySetter (XamlObjectElement element, string name, TypeConverter converter)
{
Element = element;
Name = name;
Converter = converter;
}
public abstract void SetValue(XamlObjectElement obj, object value);