nodes: hopefully this makes the old projects compatible

app/common/xmlutils.cpp

@@ -22,6 +22,7 @@
 
 #include "node/block/block.h"
 #include "node/factory.h"
+#include "widget/nodeparamview/nodeparamviewundo.h"
 #include "widget/nodeview/nodeviewundo.h"
 
 namespace olive {
@@ -34,8 +35,14 @@ void XMLConnectNodes(const XMLNodeData &xml_node_data, MultiUndoCommand *command
     if (out) {
       if (command) {
         command->add_child(new NodeEdgeAddCommand(out, con.input));
+
+        /// Deprecated: backwards compatibility only
+        command->add_child(new NodeSetValueHintCommand(con.input, {{}, -1, con.output_param}));
       } else {
         Node::ConnectEdge(out, con.input);
+
+        /// Deprecated: backwards compatibility only
+        con.input.node()->SetValueHintForInput(con.input.input(), con.input.element(), {{}, -1, con.output_param});
       }
     }
   }

app/common/xmlutils.h

@@ -39,6 +39,9 @@ struct XMLNodeData {
   struct SerializedConnection {
     NodeInput input;
     quintptr output_node;
+
+    /// Deprecated
+    QString output_param;
   };
 
   struct BlockLink {

app/node/node.cpp

@@ -122,12 +122,13 @@ void Node::Load(QXmlStreamReader *reader, XMLNodeData& xml_node_data, uint versi
           }
 
           QString output_node_id;
+          QString output_param_id;
 
           while (XMLReadNextStartElement(reader)) {
             if ((version >= 210907 && reader->name() == QStringLiteral("output")) || reader->name() == QStringLiteral("node")) {
               output_node_id = reader->readElementText();
             } else if (version < 210907 && reader->name() == QStringLiteral("output")) {
-              qDebug() << "FIXME: Convert output string to ValueHint";
+              output_param_id = reader->readElementText();
             } else {
               reader->skipCurrentElement();
             }