private DataContextInfo GetTypedTemplateDataContext(DocumentCompositeNode documentNode, RawDataSourceInfoBase localSource)
{
if (!PlatformTypes.DataTemplate.IsAssignableFrom((ITypeId)documentNode.Type))
{
return((DataContextInfo)null);
}
IProperty dataContextProperty = documentNode.TypeResolver.ResolveProperty(DataTemplateElement.DataTypeProperty);
if (dataContextProperty == null)
{
return((DataContextInfo)null);
}
if (DocumentPrimitiveNode.GetValueAsType(documentNode.Properties[(IPropertyId)dataContextProperty]) == null)
{
return((DataContextInfo)null);
}
DataContextInfo dataContextInfo = new DataContextInfo();
dataContextInfo.RawDataSource = new RawDataSourceInfo((DocumentNode)documentNode, (string)null).CombineWith(localSource);
dataContextInfo.SetDataContextOwner(documentNode, dataContextProperty);
return(dataContextInfo);
}
public DataContextInfo Evaluate(IDataContextAncestorWalker walker, bool isForSettingValue)
{
this.visitedLocations.Reset();
DataContextInfo dataContextInfo1 = new DataContextInfo();
RawDataSourceInfoBase dataSourceInfoBase1 = (RawDataSourceInfoBase)null;
bool flag = isForSettingValue;
this.evaluatingInfo = dataContextInfo1;
DataContextInfo dataContextInfo2 = (DataContextInfo)null;
try
{
while (walker.MoveNext())
{
if (flag)
{
flag = DataContextMetadata.GetDataContextAttribute <DualDataContextAttribute>(walker.CurrentProperty) != null;
}
RawDataSourceInfoBase dataSourceInfoBase2 = !flag?this.NavigateSpecialDataContextInternal(walker, dataSourceInfoBase1, true) : dataSourceInfoBase1;
flag = false;
if (dataSourceInfoBase2 != dataSourceInfoBase1)
{
dataSourceInfoBase1 = dataSourceInfoBase2;
this.MoveUpIfDataContextLocation(walker);
}
if (dataSourceInfoBase1 != null)
{
if (!dataSourceInfoBase1.IsValid)
{
break;
}
}
RawDataSourceInfoBase rawDataContextInfo = this.GetRawDataContextInfo(walker);
if (rawDataContextInfo != null)
{
if (rawDataContextInfo.IsValid)
{
dataSourceInfoBase1 = rawDataContextInfo.CombineWith(dataSourceInfoBase1);
}
else if (dataSourceInfoBase1 != null)
{
dataSourceInfoBase1.SetInvalid();
}
else
{
dataSourceInfoBase1 = rawDataContextInfo;
}
}
if (dataSourceInfoBase1 != null)
{
if (dataSourceInfoBase1.IsValid)
{
if (dataSourceInfoBase1.HasSource)
{
break;
}
}
else
{
break;
}
}
if (dataContextInfo2 == null)
{
dataContextInfo2 = this.GetTypedTemplateDataContext(walker.CurrentNode, dataSourceInfoBase1);
}
}
}
finally
{
this.evaluatingInfo = (DataContextInfo)null;
}
if (dataContextInfo2 != null && dataContextInfo2.DataSource.IsValidWithSource && (dataSourceInfoBase1 == null || !dataSourceInfoBase1.IsValid || !dataSourceInfoBase1.HasSource))
{
dataContextInfo1 = dataContextInfo2;
}
else
{
dataContextInfo1.RawDataSource = dataSourceInfoBase1;
}
return(dataContextInfo1);
}
