// Copy the root namespaces from a reader to a writer.
// DesignTimeXamlWriter follows proper XAML convention by omitting the assembly name from
// clr-namespaces in the local assembly. However, VB Expressions aren't local-assembly-aware,
// and require an assembly name. So for every clr-namespace with no assembly name, we add an
// additional namespace record with an assembly name, to support VB.
// We only do this at the root level, since the designer only writes out namespaces at the root level.
internal void CopyNamespacesAndAddLocalAssembly(System.Xaml.XamlReader activityBuilderReader, System.Xaml.XamlWriter objectWriter)
{
// Designer loads alwas provide line info
IXamlLineInfo lineInfo = (IXamlLineInfo)activityBuilderReader;
IXamlLineInfoConsumer lineInfoConsumer = (IXamlLineInfoConsumer)objectWriter;
HashSet <string> definedPrefixes = new HashSet <string>();
List <NamespaceDeclaration> localAsmNamespaces = null;
while (activityBuilderReader.Read())
{
lineInfoConsumer.SetLineInfo(lineInfo.LineNumber, lineInfo.LinePosition);
if (activityBuilderReader.NodeType == XamlNodeType.NamespaceDeclaration)
{
definedPrefixes.Add(activityBuilderReader.Namespace.Prefix);
if (this.XamlSchemaContext.IsClrNamespaceWithNoAssembly(activityBuilderReader.Namespace.Namespace))
{
if (localAsmNamespaces == null)
{
localAsmNamespaces = new List <NamespaceDeclaration>();
}
localAsmNamespaces.Add(activityBuilderReader.Namespace);
}
objectWriter.WriteNode(activityBuilderReader);
}
else
{
if (localAsmNamespaces != null)
{
foreach (NamespaceDeclaration ns in localAsmNamespaces)
{
string prefix = null;
int i = 0;
do
{
i++;
prefix = ns.Prefix + i.ToString(CultureInfo.InvariantCulture);
}while (definedPrefixes.Contains(prefix));
string fullNs = this.XamlSchemaContext.AddLocalAssembly(ns.Namespace);
objectWriter.WriteNamespace(new NamespaceDeclaration(fullNs, prefix));
definedPrefixes.Add(prefix);
}
}
objectWriter.WriteNode(activityBuilderReader);
return;
}
}
}
public override void WriteNamespace(NamespaceDeclaration namespaceDeclaration)
{
switch (_mode)
{
case DeferringMode.Off:
return;
case DeferringMode.TemplateReady:
throw new XamlInternalException(SR.Get(SRID.TemplateNotCollected, "WriteNamespace"));
case DeferringMode.TemplateStarting:
StartDeferredList();
_mode = DeferringMode.TemplateDeferring;
goto case DeferringMode.TemplateDeferring;
case DeferringMode.TemplateDeferring:
_deferredWriter.WriteNamespace(namespaceDeclaration);
_handled = true;
break;
default:
throw new XamlInternalException(SR.Get(SRID.MissingCase, _mode.ToString(), "WriteNamespace"));
}
}
public override void WriteTo(XamlWriter writer)
{
Log("NamespaceDeclaration {0}", this.Namespace);
Debug.Assert(this.Children.Count == 0);
writer.WriteNamespace(this.Namespace);
}
void WritestrippedXamlNode(XamlReader reader, XamlWriter writer)
{
switch (reader.NodeType)
{
case XamlNodeType.StartObject:
XamlType xamlType = reader.Type;
if (xamlType.IsUnknown)
{
IList<XamlType> typeArgs = UpdateTypeArgs(xamlType.TypeArguments, reader.SchemaContext);
string xmlns = XamlBuildTaskServices.UpdateClrNamespaceUriWithLocalAssembly(xamlType.PreferredXamlNamespace, this.localAssemblyName);
xamlType = new XamlType(xmlns, xamlType.Name, typeArgs, reader.SchemaContext);
}
writer.WriteStartObject(xamlType);
break;
case XamlNodeType.StartMember:
XamlMember member = reader.Member;
if (member.IsUnknown && !member.IsDirective)
{
string xmlns = XamlBuildTaskServices.UpdateClrNamespaceUriWithLocalAssembly(member.DeclaringType.PreferredXamlNamespace, this.localAssemblyName);
XamlType memberXamlType = new XamlType(xmlns, member.DeclaringType.Name, member.DeclaringType.TypeArguments, reader.SchemaContext);
member = new XamlMember(member.Name, memberXamlType, member.IsAttachable);
}
writer.WriteStartMember(member);
break;
case XamlNodeType.NamespaceDeclaration:
NamespaceDeclaration ns = new NamespaceDeclaration(
XamlBuildTaskServices.UpdateClrNamespaceUriWithLocalAssembly(reader.Namespace.Namespace, this.localAssemblyName),
reader.Namespace.Prefix);
writer.WriteNamespace(ns);
break;
case XamlNodeType.GetObject:
case XamlNodeType.EndObject:
case XamlNodeType.EndMember:
case XamlNodeType.Value:
case XamlNodeType.None:
writer.WriteNode(reader);
break;
default:
Debug.Fail("Unrecognized XamlNodeType value" + reader.NodeType.ToString());
break;
}
}
