feat: signle displayFlag

src/Engine/Network/NetworkManager.cpp

@@ -38,6 +38,15 @@ bool enzo::nt::NetworkManager::isValidOp(nt::OpId opId)
     return true;
 }
 
+void enzo::nt::NetworkManager::setDisplayOp(OpId opId)
+{
+    displayOp_=opId;
+}
+
+std::optional<enzo::nt::OpId> enzo::nt::NetworkManager::getDisplayOp()
+{
+    return displayOp_;
+}
 
 enzo::nt::NetworkManager* enzo::nt::NetworkManager::instancePtr_ = nullptr;
 

src/Engine/Network/NetworkManager.h

@@ -9,6 +9,8 @@ class NetworkManager
 {
 public:
     OpId addOperator();
+    void setDisplayOp(OpId opId);
+    std::optional<OpId> getDisplayOp();
     // delete copy constructor
     NetworkManager(const NetworkManager& obj) = delete;
 
@@ -22,7 +24,11 @@ private:
     NetworkManager() {};
 
     std::unordered_map<enzo::nt::OpId, std::unique_ptr<enzo::nt::GeometryOperator>> gopStore_;
+
+    // the highest operator id currently stored
     enzo::nt::OpId maxOpId_=0;
 
+    std::optional<OpId> displayOp_=std::nullopt;
+
 };
 }