/// <summary>
/// Finds the specified property, or creates it if it doesn't exist.
/// </summary>
public XamlProperty FindOrCreateAttachedProperty(Type ownerType, string propertyName)
{
if (ownerType == null)
{
throw new ArgumentNullException("ownerType");
}
if (propertyName == null)
{
throw new ArgumentNullException("propertyName");
}
foreach (XamlProperty p in properties)
{
if (p.IsAttached && p.PropertyTargetType == ownerType && p.PropertyName == propertyName)
{
return(p);
}
}
XamlPropertyInfo info = XamlParser.TryFindAttachedProperty(ownerType, propertyName);
if (info == null)
{
throw new ArgumentException(
"The attached property '" + propertyName + "' doesn't exist on " + ownerType.FullName,
"propertyName");
}
XamlProperty newProperty = new XamlProperty(this, info);
properties.Add(newProperty);
return(newProperty);
}
internal static void ParseObjectAttribute(XamlObject obj, XmlAttribute attribute, bool real)
{
XamlPropertyInfo propertyInfo = GetPropertyInfo(obj.Instance, obj.ElementType, attribute,
obj.OwnerDocument.TypeFinder);
XamlPropertyValue value = null;
var valueText = attribute.Value;
if (valueText.StartsWith("{", StringComparison.Ordinal) &&
!valueText.StartsWith("{}", StringComparison.Ordinal))
{
var xamlObject = MarkupExtensionParser.Parse(valueText, obj, real ? attribute : null);
value = xamlObject;
}
else
{
if (real)
{
value = new XamlTextValue(obj.OwnerDocument, attribute);
}
else
{
value = new XamlTextValue(obj.OwnerDocument, valueText);
}
}
var property = new XamlProperty(obj, propertyInfo, value);
obj.AddProperty(property);
}
internal override void AddNodeTo(XamlProperty property)
{
XamlObject holder;
if (!UpdateXmlAttribute(true, out holder))
{
property.AddChildNodeToProperty(element);
}
UpdateMarkupExtensionChain();
}
/// <summary>
/// Finds the specified property, or creates it if it doesn't exist.
/// </summary>
public XamlProperty FindOrCreateProperty(string propertyName)
{
if (propertyName == null)
{
throw new ArgumentNullException("propertyName");
}
// if (propertyName == ContentPropertyName)
// return
foreach (XamlProperty p in properties)
{
if (!p.IsAttached && p.PropertyName == propertyName)
{
return(p);
}
}
PropertyDescriptorCollection propertyDescriptors = TypeDescriptor.GetProperties(instance);
PropertyDescriptor propertyInfo = propertyDescriptors[propertyName];
XamlProperty newProperty;
if (propertyInfo == null)
{
propertyDescriptors = TypeDescriptor.GetProperties(this.elementType);
propertyInfo = propertyDescriptors[propertyName];
}
if (propertyInfo != null)
{
newProperty = new XamlProperty(this, new XamlNormalPropertyInfo(propertyInfo));
}
else
{
EventDescriptorCollection events = TypeDescriptor.GetEvents(instance);
EventDescriptor eventInfo = events[propertyName];
if (eventInfo == null)
{
events = TypeDescriptor.GetEvents(this.elementType);
eventInfo = events[propertyName];
}
if (eventInfo != null)
{
newProperty = new XamlProperty(this, new XamlEventPropertyInfo(eventInfo));
}
else
{
throw new ArgumentException(
"The property '" + propertyName + "' doesn't exist on " + elementType.FullName, "propertyName");
}
}
properties.Add(newProperty);
return(newProperty);
}
internal string GetPrefixForNamespace(string @namespace)
{
if (@namespace == XamlConstants.PresentationNamespace)
{
return(null);
}
string prefix = _xmlDoc.DocumentElement.GetPrefixOfNamespace(@namespace);
if (_xmlDoc.DocumentElement.NamespaceURI == @namespace && _xmlDoc.Prefix == String.Empty)
{
return(string.Empty);
}
if (String.IsNullOrEmpty(prefix))
{
prefix = _typeFinder.GetPrefixForXmlNamespace(@namespace);
string existingNamespaceForPrefix = null;
if (!String.IsNullOrEmpty(prefix))
{
existingNamespaceForPrefix = _xmlDoc.DocumentElement.GetNamespaceOfPrefix(prefix);
}
if (String.IsNullOrEmpty(prefix) ||
!String.IsNullOrEmpty(existingNamespaceForPrefix) &&
existingNamespaceForPrefix != @namespace)
{
do
{
prefix = "Controls" + namespacePrefixCounter++;
} while (!String.IsNullOrEmpty(_xmlDoc.DocumentElement.GetNamespaceOfPrefix(prefix)));
}
string xmlnsPrefix = _xmlDoc.DocumentElement.GetPrefixOfNamespace(XamlConstants.XmlnsNamespace);
System.Diagnostics.Debug.Assert(!String.IsNullOrEmpty(xmlnsPrefix));
_xmlDoc.DocumentElement.SetAttribute(xmlnsPrefix + ":" + prefix, @namespace);
if (@namespace == XamlConstants.DesignTimeNamespace)
{
var ignorableProp = new XamlProperty(this._rootElement,
new XamlDependencyPropertyInfo(MarkupCompatibilityProperties.IgnorableProperty, true));
ignorableProp.SetAttribute(prefix);
}
}
return(prefix);
}
//TODO: reseting path property for binding doesn't work in XamlProperty
//use CanResetValue()
internal void OnPropertyChanged(XamlProperty property)
{
XamlObject holder;
if (!UpdateXmlAttribute(false, out holder))
{
if (holder != null &&
holder.XmlAttribute != null)
{
holder.XmlAttribute.OwnerElement.RemoveAttributeNode(holder.XmlAttribute);
holder.xmlAttribute = null;
holder.ParentProperty.AddChildNodeToProperty(holder.element);
bool isThisUpdated = false;
foreach (XamlObject propXamlObject in holder.Properties.Where((prop) => prop.IsSet)
.Select((prop) => prop.PropertyValue)
.OfType <XamlObject>())
{
XamlObject innerHolder;
bool updateResult = propXamlObject.UpdateXmlAttribute(true, out innerHolder);
Debug.Assert(updateResult || innerHolder == null);
if (propXamlObject == this)
{
isThisUpdated = true;
}
}
if (!isThisUpdated)
{
this.UpdateXmlAttribute(true, out holder);
}
}
}
UpdateMarkupExtensionChain();
if (!element.HasChildNodes && !element.IsEmpty)
{
element.IsEmpty = true;
}
if (property == NameProperty)
{
if (NameChanged != null)
{
NameChanged(this, EventArgs.Empty);
}
}
}
/// <summary>For use by XamlParser only.</summary>
internal void AddProperty(XamlProperty property)
{
#if DEBUG
if (property.IsAttached == false)
{
foreach (XamlProperty p in properties)
{
if (p.IsAttached == false && p.PropertyName == property.PropertyName)
{
throw new XamlLoadException("duplicate property:" + property.PropertyName);
}
}
}
#endif
properties.Add(property);
}
internal override void AddNodeTo(XamlProperty property)
{
if (attribute != null)
{
property.ParentObject.XmlElement.Attributes.Append(attribute);
}
else if (textValue != null)
{
attribute = property.SetAttribute(textValue);
textValue = null;
}
else if (cDataSection != null)
{
property.AddChildNodeToProperty(cDataSection);
}
else
{
property.AddChildNodeToProperty(textNode);
}
}
/// <summary>
/// Sets an attribute in the x:-namespace.
/// </summary>
public void SetXamlAttribute(string name, string value)
{
XamlProperty runtimeNameProperty = null;
bool isNameChange = false;
if (name == "Name")
{
isNameChange = true;
string oldName = GetXamlAttribute("Name");
if (String.IsNullOrEmpty(oldName))
{
runtimeNameProperty = this.NameProperty;
if (runtimeNameProperty != null)
{
if (runtimeNameProperty.IsSet)
{
oldName = (string)runtimeNameProperty.ValueOnInstance;
}
else
{
runtimeNameProperty = null;
}
}
}
if (String.IsNullOrEmpty(oldName))
{
oldName = null;
}
NameScopeHelper.NameChanged(this, oldName, value);
}
if (value == null)
{
element.RemoveAttribute(name, XamlConstants.XamlNamespace);
}
else
{
var prefix = element.GetPrefixOfNamespace(XamlConstants.XamlNamespace);
var prefix2009 = element.GetPrefixOfNamespace(XamlConstants.Xaml2009Namespace);
if (!string.IsNullOrEmpty(prefix))
{
var attribute = element.OwnerDocument.CreateAttribute(prefix, name, XamlConstants.XamlNamespace);
attribute.InnerText = value;
element.SetAttributeNode(attribute);
}
else if (!string.IsNullOrEmpty(prefix2009))
{
var attribute =
element.OwnerDocument.CreateAttribute(prefix, name, XamlConstants.Xaml2009Namespace);
attribute.InnerText = value;
element.SetAttributeNode(attribute);
}
else
{
element.SetAttribute(name, XamlConstants.XamlNamespace, value);
}
}
if (isNameChange)
{
bool nameChangedAlreadyRaised = false;
if (runtimeNameProperty != null)
{
var handler = new EventHandler((sender, e) => nameChangedAlreadyRaised = true);
this.NameChanged += handler;
try
{
runtimeNameProperty.Reset();
}
finally
{
this.NameChanged -= handler;
}
}
if (NameChanged != null && !nameChangedAlreadyRaised)
{
NameChanged(this, EventArgs.Empty);
}
}
}
internal abstract void AddNodeTo(XamlProperty property);
/// <summary>
/// Create a XamlPropertyValue for the specified value instance.
/// </summary>
public XamlPropertyValue CreatePropertyValue(object instance, XamlProperty forProperty)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
Type elementType = instance.GetType();
TypeConverter c = TypeDescriptor.GetConverter(instance);
var ctx = new DummyTypeDescriptorContext(this.ServiceProvider);
ctx.Instance = instance;
bool hasStringConverter = c.CanConvertTo(ctx, typeof(string)) && c.CanConvertFrom(typeof(string));
if (forProperty != null && hasStringConverter)
{
if (instance is SolidColorBrush &&
_colorBrushDictionary.ContainsKey(((SolidColorBrush)instance).Color))
{
var name = _colorBrushDictionary[((SolidColorBrush)instance).Color];
return(new XamlTextValue(this, name));
}
return(new XamlTextValue(this, c.ConvertToInvariantString(ctx, instance)));
}
string ns = GetNamespaceFor(elementType);
string prefix = GetPrefixForNamespace(ns);
XmlElement xml = _xmlDoc.CreateElement(prefix, elementType.Name, ns);
if (hasStringConverter && (XamlObject.GetContentPropertyName(elementType) != null ||
IsNativeType(instance)))
{
xml.InnerText = c.ConvertToInvariantString(instance);
}
else if (instance is Brush && forProperty != null)
{
// TODO: this is a hacky fix, because Brush Editor doesn't
// edit Design Items and so we have no XML, only the Brush
// object and we need to parse the Brush to XAML!
var s = new MemoryStream();
XamlWriter.Save(instance, s);
s.Seek(0, SeekOrigin.Begin);
XmlDocument doc = new XmlDocument();
doc.Load(s);
xml = (XmlElement)_xmlDoc.ImportNode(doc.DocumentElement, true);
var attLst = xml.Attributes.Cast <XmlAttribute>().ToList();
foreach (XmlAttribute att in attLst)
{
if (att.Name.StartsWith(XamlConstants.Xmlns))
{
var rootAtt = doc.DocumentElement.GetAttributeNode(att.Name);
if (rootAtt != null && rootAtt.Value == att.Value)
{
xml.Attributes.Remove(att);
}
}
}
}
return(new XamlObject(this, xml, elementType, instance));
}
void ParseObjectChildElementAsPropertyElement(XamlObject obj, XmlElement element,
XamlPropertyInfo defaultProperty)
{
Debug.Assert(element.LocalName.Contains("."));
// this is a element property syntax
XamlPropertyInfo propertyInfo = GetPropertyInfo(settings.TypeFinder, obj.Instance, obj.ElementType,
element.NamespaceURI, element.LocalName);
bool valueWasSet = false;
object collectionInstance = null;
bool isElementChildACollectionForProperty = false;
XamlProperty collectionProperty = null;
if (propertyInfo.IsCollection)
{
if (defaultProperty != null && defaultProperty.FullyQualifiedName == propertyInfo.FullyQualifiedName)
{
foreach (XamlProperty existing in obj.Properties)
{
if (existing.propertyInfo == defaultProperty)
{
collectionProperty = existing;
break;
}
}
}
if (collectionProperty == null)
{
obj.AddProperty(collectionProperty = new XamlProperty(obj, propertyInfo));
}
isElementChildACollectionForProperty =
IsElementChildACollectionForProperty(settings.TypeFinder, element, propertyInfo);
if (isElementChildACollectionForProperty)
{
collectionProperty.ParserSetPropertyElement((XmlElement)element.ChildNodes.Cast <XmlNode>()
.Where(x => !(x is XmlWhitespace))
.First());
}
else
{
collectionInstance = collectionProperty.propertyInfo.GetValue(obj.Instance);
collectionProperty.ParserSetPropertyElement(element);
collectionInstance = collectionInstance ??
Activator.CreateInstance(collectionProperty.propertyInfo.ReturnType);
}
}
XmlSpace oldXmlSpace = currentXmlSpace;
if (element.HasAttribute("xml:space"))
{
currentXmlSpace = (XmlSpace)Enum.Parse(typeof(XmlSpace), element.GetAttribute("xml:space"), true);
}
foreach (XmlNode childNode in element.ChildNodes)
{
currentParsedNode = childNode;
XamlPropertyValue childValue = ParseValue(childNode);
if (childValue != null)
{
if (propertyInfo.IsCollection)
{
if (isElementChildACollectionForProperty)
{
collectionProperty.PropertyValue = childValue;
}
else
{
CollectionSupport.AddToCollection(propertyInfo.ReturnType, collectionInstance, childValue);
collectionProperty.ParserAddCollectionElement(element, childValue);
}
}
else
{
if (valueWasSet)
{
throw new XamlLoadException("non-collection property may have only one child element");
}
valueWasSet = true;
XamlProperty xp = new XamlProperty(obj, propertyInfo, childValue);
xp.ParserSetPropertyElement(element);
obj.AddProperty(xp);
}
}
}
currentParsedNode = element;
currentXmlSpace = oldXmlSpace;
}
void ParseObjectContent(XamlObject obj, XmlElement element, XamlPropertyInfo defaultProperty,
XamlTextValue initializeFromTextValueInsteadOfConstructor)
{
bool isDefaultValueSet = false;
XamlProperty collectionProperty = null;
object collectionInstance = null;
Type collectionType = null;
XmlElement collectionPropertyElement = null;
var elementChildNodes = GetNormalizedChildNodes(element);
if (defaultProperty == null && obj.Instance != null &&
CollectionSupport.IsCollectionType(obj.Instance.GetType()))
{
XamlObject parentObj = obj.ParentObject;
var parentElement = element.ParentNode;
XamlPropertyInfo propertyInfo;
if (parentObj != null)
{
propertyInfo = GetPropertyInfo(settings.TypeFinder, parentObj.Instance, parentObj.ElementType,
parentElement.NamespaceURI, parentElement.LocalName);
collectionProperty = FindExistingXamlProperty(parentObj, propertyInfo);
}
collectionInstance = obj.Instance;
collectionType = obj.ElementType;
collectionPropertyElement = element;
}
else if (defaultProperty != null && defaultProperty.IsCollection && !element.IsEmpty)
{
foreach (XmlNode childNode in elementChildNodes)
{
currentParsedNode = childNode;
XmlElement childElement = childNode as XmlElement;
if (childElement == null || !ObjectChildElementIsPropertyElement(childElement))
{
obj.AddProperty(collectionProperty = new XamlProperty(obj, defaultProperty));
collectionType = defaultProperty.ReturnType;
collectionInstance = defaultProperty.GetValue(obj.Instance);
break;
}
}
}
currentParsedNode = element;
if (collectionType != null && collectionInstance == null && elementChildNodes.Count() == 1)
{
var firstChild = elementChildNodes.First() as XmlElement;
if (ObjectChildElementIsCollectionInstance(firstChild, collectionType))
{
collectionInstance = ParseObject(firstChild);
collectionProperty.PropertyValue = (XamlPropertyValue)collectionInstance;
}
else
{
throw new XamlLoadException("Collection Instance is null");
}
}
else
{
foreach (XmlNode childNode in elementChildNodes)
{
currentParsedNode = childNode;
XmlElement childElement = childNode as XmlElement;
if (childElement != null)
{
if (childElement.NamespaceURI == XamlConstants.XamlNamespace)
{
continue;
}
if (ObjectChildElementIsPropertyElement(childElement))
{
ParseObjectChildElementAsPropertyElement(obj, childElement, defaultProperty);
continue;
}
}
if (initializeFromTextValueInsteadOfConstructor != null)
{
continue;
}
XamlPropertyValue childValue = ParseValue(childNode);
if (childValue != null)
{
if (collectionProperty != null)
{
collectionProperty.ParserAddCollectionElement(collectionPropertyElement, childValue);
CollectionSupport.AddToCollection(collectionType, collectionInstance, childValue);
}
else if (collectionProperty == null && collectionInstance is ResourceDictionary)
{
CollectionSupport.AddToCollection(collectionType, collectionInstance, childValue);
}
else
{
if (defaultProperty == null)
{
throw new XamlLoadException(
"This element does not have a default value, cannot assign to it");
}
if (isDefaultValueSet)
{
throw new XamlLoadException("default property may have only one value assigned");
}
obj.AddProperty(new XamlProperty(obj, defaultProperty, childValue));
isDefaultValueSet = true;
}
}
}
}
currentParsedNode = element;
}
internal CollectionElementsCollection(XamlProperty property)
{
this.property = property;
}
