private Object _EvaluateNode(SDK.ILogger logger, Guid nodeId, bool previewMode)
{
_ThreadAffinity.Check();
CheckCancellation();
logger?.LogInfo(nodeId.ToString(), "Begin Evaluation...");
// Get the current node being evaluated
var nodeInst = _InstanceFunc(nodeId);
if (nodeInst == null)
{
return(null);
}
if (nodeInst is _UnknownNode)
{
return(null);
}
// Next, we retrieve the property values for this node from the DOM
var nodeProps = _PropertiesFunc(nodeId).AsReadOnly();
if (nodeProps == null)
{
return(null);
}
// Assign values and node dependencies. Dependecies are evaluated to its values.
// NOTE: even in preview mode, dependent nodes are evaluated normally
nodeInst.EvaluateBindings(nodeProps, xid => _EvaluateNode(logger, xid, false));
CheckCancellation();
// evaluate the current node
try
{
var localMonitor = GetLocalProgressMonitor(nodeId);
if (nodeInst is SDK.ContentFilter filterInst)
{
if (previewMode)
{
return(SDK.PreviewNode(filterInst, localMonitor, logger));
}
else
{
if (System.Diagnostics.Debugger.IsAttached)
{
return(SDK.DebugNode(filterInst, localMonitor, logger));
}
else
{
return(SDK.EvaluateNode(filterInst, localMonitor, logger));
}
}
}
else if (nodeInst is SDK.ContentObject)
{
return(nodeInst);
}
}
catch (Exception ex)
{
throw new PluginException(ex);
}
throw new NotImplementedException();
}