private static void AppendPropertyValue(StringBuilder sb, XamlPropertyValue value, bool isStringProperty)
{
var textValue = value as XamlTextValue;
if (textValue != null)
{
string text = textValue.Text;
bool containsSpace = text.Contains(' ');
if (containsSpace)
{
sb.Append('\'');
}
if (isStringProperty)
{
sb.Append(text.Replace("\\", "\\\\").Replace("{", "\\{").Replace("}", "\\}"));
}
else
{
sb.Append(text.Replace("\\", "\\\\"));
}
if (containsSpace)
{
sb.Append('\'');
}
}
else if (value is XamlObject)
{
sb.Append(Print(value as XamlObject));
}
}
void PossiblyNameChanged(XamlPropertyValue oldValue, XamlPropertyValue newValue)
{
if (ParentObject.RuntimeNameProperty != null && PropertyName == ParentObject.RuntimeNameProperty)
{
if (!String.IsNullOrEmpty(ParentObject.GetXamlAttribute("Name")))
{
throw new XamlLoadException("The property 'Name' is set more than once.");
}
string oldName = null;
string newName = null;
var oldTextValue = oldValue as XamlTextValue;
if (oldTextValue != null)
{
oldName = oldTextValue.Text;
}
var newTextValue = newValue as XamlTextValue;
if (newTextValue != null)
{
newName = newTextValue.Text;
}
NameScopeHelper.NameChanged(ParentObject, oldName, newName);
}
}
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);
}
// for use by parser only
internal XamlProperty(XamlObject parentObject, XamlPropertyInfo propertyInfo, XamlPropertyValue propertyValue)
: this(parentObject, propertyInfo)
{
PossiblyNameChanged(null, propertyValue);
this.propertyValue = propertyValue;
if (propertyValue != null)
{
propertyValue.ParentProperty = this;
}
UpdateValueOnInstance();
}
/// <summary>
/// Removes an item instance from the specified collection.
/// </summary>
internal static void RemoveItem(Type collectionType, object collectionInstance, object item,
XamlPropertyValue element)
{
var dictionary = collectionInstance as IDictionary;
var xamlObject = element as XamlObject;
if (dictionary != null && xamlObject != null)
{
dictionary.Remove(xamlObject.GetXamlAttribute("Key"));
}
else
{
RemoveItem(collectionType, collectionInstance, item);
}
}
void SetPropertyValue(XamlPropertyValue value)
{
// Binding...
//if (IsCollection) {
// throw new InvalidOperationException("Cannot set the value of collection properties.");
//}
bool wasSet = this.IsSet;
PossiblyNameChanged(propertyValue, value);
//reset expression
var xamlObject = propertyValue as XamlObject;
if (xamlObject != null && xamlObject.IsMarkupExtension)
{
propertyInfo.ResetValue(parentObject.Instance);
}
ResetInternal();
propertyValue = value;
if (propertyValue != null)
{
propertyValue.ParentProperty = this;
propertyValue.AddNodeTo(this);
}
UpdateValueOnInstance();
ParentObject.OnPropertyChanged(this);
if (!wasSet)
{
if (IsSetChanged != null)
{
IsSetChanged(this, EventArgs.Empty);
}
}
if (ValueChanged != null)
{
ValueChanged(this, EventArgs.Empty);
}
}
/// <summary>
/// Adds a value at the specified index in the collection.
/// </summary>
public static bool Insert(Type collectionType, object collectionInstance, XamlPropertyValue newElement,
int index)
{
object value = newElement.GetValueFor(null);
// Using IList, with possible Add instead of Insert, was primarily added as a workaround
// for a peculiarity (or bug) with collections inside System.Windows.Input namespace.
// See CollectionTests.InputCollectionsPeculiarityOrBug test method for details.
var list = collectionInstance as IList;
if (list != null)
{
if (list.Count == index)
{
list.Add(value);
}
else
{
list.Insert(index, value);
}
return(true);
}
else
{
var hasInsert = collectionType.GetMethods().Any(x => x.Name == "Insert");
if (hasInsert)
{
collectionType.InvokeMember(
"Insert", BindingFlags.Public | BindingFlags.InvokeMethod | BindingFlags.Instance,
null, collectionInstance,
new object[] { index, value },
CultureInfo.InvariantCulture);
return(true);
}
}
return(false);
}
void ResetInternal()
{
bool isExplicitCollection = false;
if (propertyValue != null)
{
isExplicitCollection = IsCollection;
propertyValue.RemoveNodeFromParent();
propertyValue.ParentProperty = null;
propertyValue = null;
}
if (_propertyElement != null)
{
Debug.Assert(!isExplicitCollection || _propertyElement.ParentNode == null);
if (!isExplicitCollection)
{
_propertyElement.ParentNode.RemoveChild(_propertyElement);
}
_propertyElement = null;
}
}
/// <summary>
/// used internally by the XamlParser.
/// Add a collection element that already is part of the XML DOM.
/// </summary>
internal void ParserAddCollectionElement(XmlElement collectionPropertyElement, XamlPropertyValue val)
{
if (collectionPropertyElement != null && _propertyElement == null)
{
ParserSetPropertyElement(collectionPropertyElement);
}
collectionElements.AddInternal(val);
val.ParentProperty = this;
if (collectionPropertyElement != _propertyElement)
{
val.RemoveNodeFromParent();
val.AddNodeTo(this);
}
}
/// <summary>
/// Adds a value to the end of a collection.
/// </summary>
public static void AddToCollection(Type collectionType, object collectionInstance, XamlPropertyValue newElement)
{
IAddChild addChild = collectionInstance as IAddChild;
if (addChild != null)
{
if (newElement is XamlTextValue)
{
addChild.AddText((string)newElement.GetValueFor(null));
}
else
{
addChild.AddChild(newElement.GetValueFor(null));
}
}
else if (collectionInstance is IDictionary)
{
object val = newElement.GetValueFor(null);
object key = newElement is XamlObject ? ((XamlObject)newElement).GetXamlAttribute("Key") : null;
if (key == null || (key as string) == "")
{
if (val is Style)
{
key = ((Style)val).TargetType;
}
}
if (key == null || (key as string) == "")
{
key = val;
}
((IDictionary)collectionInstance).Add(key, val);
}
else
{
collectionType.InvokeMember(
"Add", BindingFlags.Public | BindingFlags.InvokeMethod | BindingFlags.Instance,
null, collectionInstance,
new object[] { newElement.GetValueFor(null) },
CultureInfo.InvariantCulture);
}
}
/// <summary>
/// Adds a value at the specified index in the collection. A return value indicates whether the Insert succeeded.
/// </summary>
/// <returns>True if the Insert succeeded, false if the collection type does not support Insert.</returns>
internal static bool TryInsert(Type collectionType, object collectionInstance, XamlPropertyValue newElement,
int index)
{
try
{
return(Insert(collectionType, collectionInstance, newElement, index));
}
catch (MissingMethodException)
{
return(false);
}
}
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;
}
