From 1fcf8658399acfceecddc2f57a587b5334ef6ac6 Mon Sep 17 00:00:00 2001
From: Malcolm Tyrrell <Malcolm.R.Tyrrell@gmail.com>
Date: Tue, 25 Jun 2019 21:26:54 +0100
Subject: [PATCH] Hide ports with no dataType.

---
 src/NodeGraphicsObject.cpp | 10 ++++++++++
 src/NodePainter.cpp        |  6 ++++++
 2 files changed, 16 insertions(+)

diff --git a/src/NodeGraphicsObject.cpp b/src/NodeGraphicsObject.cpp
index efa473a20..52dba2df1 100644
--- a/src/NodeGraphicsObject.cpp
+++ b/src/NodeGraphicsObject.cpp
@@ -223,6 +223,16 @@ mousePressEvent(QGraphicsSceneMouseEvent * event)
     {
       NodeState const & nodeState = _node.nodeState();
 
+      // Ports with no data type cannot make a connection.
+      {
+        const NodeDataModel* model = _node.nodeDataModel();
+        const NodeDataType dataType = model->dataType(portToCheck, portIndex);
+        if (dataType.id.isEmpty())
+        {
+          continue;
+        }
+      }
+      
       std::unordered_map<QUuid, Connection*> connections =
         nodeState.connections(portToCheck, portIndex);
 
diff --git a/src/NodePainter.cpp b/src/NodePainter.cpp
index c3bdf7ae0..4bd88f8e2 100644
--- a/src/NodePainter.cpp
+++ b/src/NodePainter.cpp
@@ -128,6 +128,12 @@ drawConnectionPoints(QPainter* painter,
 
       auto const & dataType = model->dataType(portType, i);
 
+      // Empty data types are not drawn.
+      if (dataType.id.isEmpty())
+      {
+        continue;
+      }
+
       bool canConnect = (state.getEntries(portType)[i].empty() ||
                          (portType == PortType::Out &&
                           model->portOutConnectionPolicy(i) == NodeDataModel::ConnectionPolicy::Many) );