public XamlDependencyPropertyInfo(DependencyProperty property, bool isAttached,
Func <object, object> attachedGetter = null)
{
Debug.Assert(property != null);
this.property = property;
this.isAttached = isAttached;
this.isCollection = CollectionSupport.IsCollectionType(property.PropertyType);
this.attachedGetter = attachedGetter;
}
protected override void InsertItem(int index, XamlPropertyValue item)
{
XamlPropertyInfo info = property.propertyInfo;
object collection = info.GetValue(property.ParentObject.Instance);
if (!CollectionSupport.TryInsert(info.ReturnType, collection, item, index))
{
CollectionSupport.AddToCollection(info.ReturnType, collection, item);
}
item.ParentProperty = property;
property.InsertNodeInCollection(item.GetNodeForCollection(), index);
base.InsertItem(index, item);
if (CollectionChanged != null)
{
CollectionChanged(this,
new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, item, index));
}
}
protected override void RemoveItem(int index)
{
XamlPropertyInfo info = property.propertyInfo;
object collection = info.GetValue(property.ParentObject.Instance);
if (!CollectionSupport.RemoveItemAt(info.ReturnType, collection, index))
{
var propertyValue = this[index];
CollectionSupport.RemoveItem(info.ReturnType, collection, propertyValue.GetValueFor(info),
propertyValue);
}
var item = this[index];
item.RemoveNodeFromParent();
item.ParentProperty = null;
base.RemoveItem(index);
if (CollectionChanged != null && !isClearing)
{
CollectionChanged(this,
new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, item, index));
}
}
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;
}
