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);
}
}
/// <inheritdoc/>
public object Resolve(string name)
{
INameScope ns = null;
var xamlObj = this.XamlObject;
while (xamlObj != null)
{
ns = NameScopeHelper.GetNameScopeFromObject(xamlObj);
if (ns != null)
{
var obj = ns.FindName(name);
if (obj != null)
{
return(obj);
}
}
xamlObj = xamlObj.ParentObject;
}
return(null);
}
/// <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);
}
}
}
XamlObject ParseObject(XmlElement element)
{
Type elementType = settings.TypeFinder.GetType(element.NamespaceURI, element.LocalName);
if (typeof(FrameworkTemplate).IsAssignableFrom(elementType))
{
var xamlObj = new XamlObject(document, element, elementType,
TemplateHelper.GetFrameworkTemplate(element, currentXamlObject));
xamlObj.ParentObject = currentXamlObject;
return(xamlObj);
}
if (elementType == null)
{
elementType = settings.TypeFinder.GetType(element.NamespaceURI, element.LocalName + "Extension");
if (elementType == null)
{
throw new XamlLoadException("Cannot find type " + element.Name);
}
}
XmlSpace oldXmlSpace = currentXmlSpace;
XamlObject parentXamlObject = currentXamlObject;
if (element.HasAttribute("xml:space"))
{
currentXmlSpace = (XmlSpace)Enum.Parse(typeof(XmlSpace), element.GetAttribute("xml:space"), true);
}
XamlPropertyInfo defaultProperty = GetDefaultProperty(elementType);
XamlTextValue initializeFromTextValueInsteadOfConstructor = null;
if (defaultProperty == null)
{
int numberOfTextNodes = 0;
bool onlyTextNodes = true;
foreach (XmlNode childNode in element.ChildNodes)
{
if (childNode.NodeType == XmlNodeType.Text)
{
numberOfTextNodes++;
}
else if (childNode.NodeType == XmlNodeType.Element)
{
onlyTextNodes = false;
}
}
if (elementType == typeof(string) && numberOfTextNodes == 0)
{
initializeFromTextValueInsteadOfConstructor = new XamlTextValue(document, string.Empty);
}
else if (onlyTextNodes && numberOfTextNodes == 1)
{
foreach (XmlNode childNode in element.ChildNodes)
{
if (childNode.NodeType == XmlNodeType.Text)
{
currentParsedNode = childNode;
initializeFromTextValueInsteadOfConstructor = (XamlTextValue)ParseValue(childNode);
}
}
}
}
currentParsedNode = element;
object instance;
if (initializeFromTextValueInsteadOfConstructor != null)
{
instance = TypeDescriptor.GetConverter(elementType)
.ConvertFromString(
document.GetTypeDescriptorContext(null),
CultureInfo.InvariantCulture,
initializeFromTextValueInsteadOfConstructor.Text);
}
else
{
instance = settings.CreateInstanceCallback(elementType, emptyObjectArray);
}
XamlObject obj = new XamlObject(document, element, elementType, instance);
currentXamlObject = obj;
obj.ParentObject = parentXamlObject;
if (parentXamlObject == null && obj.Instance is DependencyObject)
{
NameScope.SetNameScope((DependencyObject)obj.Instance, new NameScope());
}
ISupportInitialize iSupportInitializeInstance = instance as ISupportInitialize;
if (iSupportInitializeInstance != null)
{
iSupportInitializeInstance.BeginInit();
}
foreach (XmlAttribute attribute in element.Attributes)
{
if (attribute.Value.StartsWith("clr-namespace", StringComparison.OrdinalIgnoreCase))
{
// the format is "clr-namespace:<Namespace here>;assembly=<Assembly name here>"
var clrNamespace = attribute.Value.Split(new[] { ':', ';', '=' });
if (clrNamespace.Length == 4)
{
// get the assembly name
var assembly = settings.TypeFinder.LoadAssembly(clrNamespace[3]);
if (assembly != null)
{
settings.TypeFinder.RegisterAssembly(assembly);
}
}
else
{
// if no assembly name is there, then load the assembly of the opened file.
var assembly = settings.TypeFinder.LoadAssembly(null);
if (assembly != null)
{
settings.TypeFinder.RegisterAssembly(assembly);
}
}
}
if (attribute.NamespaceURI == XamlConstants.XmlnsNamespace)
{
continue;
}
if (attribute.Name == "xml:space")
{
continue;
}
if (GetAttributeNamespace(attribute) == XamlConstants.XamlNamespace ||
GetAttributeNamespace(attribute) == XamlConstants.Xaml2009Namespace)
{
if (attribute.LocalName == "Name")
{
try
{
NameScopeHelper.NameChanged(obj, null, attribute.Value);
}
catch (Exception x)
{
ReportException(x, attribute);
}
}
continue;
}
ParseObjectAttribute(obj, attribute);
}
ParseObjectContent(obj, element, defaultProperty, initializeFromTextValueInsteadOfConstructor);
if (iSupportInitializeInstance != null)
{
iSupportInitializeInstance.EndInit();
}
currentXmlSpace = oldXmlSpace;
currentXamlObject = parentXamlObject;
return(obj);
}
