Optimize parameter passing to avoid unnecessary copying

src/graphics/ui/elements/Menu.cpp

@@ -1,6 +1,7 @@
 #include "Menu.hpp"
 
 #include <stdexcept>
+#include <utility>
 
 using namespace gui;
 
@@ -12,11 +13,11 @@ bool Menu::has(const std::string& name) {
            pageSuppliers.find(name) != pageSuppliers.end();
 }
 
-void Menu::addPage(std::string name, std::shared_ptr<UINode> panel) {
+void Menu::addPage(const std::string& name, const std::shared_ptr<UINode> &panel) {
     pages[name] = Page{name, panel};
 }
 
-void Menu::addSupplier(std::string name, supplier<std::shared_ptr<UINode>> pageSupplier) {
+void Menu::addSupplier(const std::string &name, const supplier<std::shared_ptr<UINode>> &pageSupplier) {
     pageSuppliers[name] = pageSupplier;
 }
 
@@ -38,7 +39,7 @@ std::shared_ptr<UINode> Menu::fetchPage(const std::string& name) {
     }
 }
 
-void Menu::setPage(std::string name, bool history) {
+void Menu::setPage(const std::string &name, bool history) {
     Page page {name, fetchPage(name)};
     if (page.panel == nullptr) {
         throw std::runtime_error("no page found");
@@ -53,7 +54,7 @@ void Menu::setPage(Page page, bool history) {
             pageStack.push(current);
         }
     }
-    current = page;
+    current = std::move(page);
     Container::add(current.panel);
     setSize(current.panel->getSize());
 }
@@ -73,7 +74,7 @@ void Menu::back() {
 }
 
 void Menu::setPageLoader(page_loader_func loader) {
-    pagesLoader = loader;
+    pagesLoader = std::move(loader);
 }
 
 Page& Menu::getCurrent() {