private static void WriteValue(Xaml.XamlReader xamlReader, XamlObjectWriter xamlWriter, XamlContextStack <WpfXamlFrame> stack, IStyleConnector styleConnector)
{
if (stack.CurrentFrame.Property.IsDirective && stack.CurrentFrame.Property == XamlLanguage.Shared)
{
bool isShared;
if (bool.TryParse(xamlReader.Value as string, out isShared))
{
if (!isShared)
{
if (!(xamlReader is Baml2006Reader))
{
throw new XamlParseException(SR.Get(SRID.SharedAttributeInLooseXaml));
}
}
}
}
// ObjectWriter should not process PresentationOptions:Freeze directive nodes since it is unknown
if (stack.CurrentFrame.Property.IsDirective && stack.CurrentFrame.Property == XamlReaderHelper.Freeze)
{
bool freeze = Convert.ToBoolean(xamlReader.Value, TypeConverterHelper.InvariantEnglishUS);
stack.CurrentFrame.FreezeFreezable = freeze;
var bamlReader = xamlReader as System.Windows.Baml2006.Baml2006Reader;
if (bamlReader != null)
{
bamlReader.FreezeFreezables = freeze;
}
}
// The space directive node stream should not be written because it induces object instantiation,
// and the Baml2006Reader can produce space directives prematurely.
else if (stack.CurrentFrame.Property == XmlSpace.Value || stack.CurrentFrame.Property == XamlLanguage.Space)
{
if (typeof(DependencyObject).IsAssignableFrom(stack.CurrentFrame.Type.UnderlyingType))
{
System.Diagnostics.Debug.Assert(xamlReader.Value is string, "XmlAttributeProperties.XmlSpaceProperty has the type string.");
stack.CurrentFrame.XmlSpace = (string)xamlReader.Value == "default";
}
}
else
{
// Ideally we should check if we're inside FrameworkTemplate's Content and not register those.
// However, checking if the instance is null accomplishes the same with a much smaller perf impact.
if (styleConnector != null &&
stack.CurrentFrame.Instance != null &&
stack.CurrentFrame.Property == XamlLanguage.ConnectionId &&
typeof(Style).IsAssignableFrom(stack.CurrentFrame.Type.UnderlyingType))
{
styleConnector.Connect((int)xamlReader.Value, stack.CurrentFrame.Instance);
}
xamlWriter.WriteNode(xamlReader);
}
}
private static void WriteStartObject(Xaml.XamlReader xamlReader, XamlObjectWriter xamlWriter, XamlContextStack <WpfXamlFrame> stack)
{
xamlWriter.WriteNode(xamlReader);
// If there's a frame but no Type, that means there
// was a namespace. Just set the Type
if (stack.Depth != 0 && stack.CurrentFrame.Type == null)
{
stack.CurrentFrame.Type = xamlReader.Type;
}
else
{
// Propagate the FreezeFreezable property from the current stack frame
stack.PushScope();
stack.CurrentFrame.Type = xamlReader.Type;
if (stack.PreviousFrame.FreezeFreezable)
{
stack.CurrentFrame.FreezeFreezable = true;
}
}
}