Adding template project and correct name

src/page.hpp

@@ -0,0 +1,49 @@
+#pragma once
+
+#include <RmlUi/Core/Context.h>
+#include <RmlUi/Core/DataModelHandle.h>
+#include <RmlUi/Core/Element.h>
+#include <RmlUi/Core/ElementDocument.h>
+#include <RmlUi/Core/Factory.h>
+#include <string>
+
+class App;
+
+class PageBase 
+{
+public:
+    PageBase(std::string pageName, App* app) : pageName(std::move(pageName)), app(app) {}
+    virtual ~PageBase() = default;
+
+    const std::string& GetName() const { return pageName; }
+    bool TryLoadRmlPage(std::string path = "");
+
+    virtual void SetupDataModel(Rml::DataModelConstructor constructor) {}
+    virtual void OnEnter(Rml::Element *root) {}
+    virtual void OnExit() {}
+
+protected:
+    App* GetApp() const {return app;}
+    void RegisterListener(Rml::Element* element, std::unique_ptr<Rml::EventListener> listener) {
+        if (element && listener) {
+            element->AddEventListener(Rml::EventId::Click, listener.get());
+            pageListeners.push_back(std::move(listener));
+        }
+    }
+
+    void DirtyVariable(const std::string& name) {
+        if (hasModel) model.DirtyVariable(name);
+    }
+
+private:
+    friend class App;
+
+    std::string pageName;
+    App *app;
+
+    std::vector<std::unique_ptr<Rml::EventListener>> pageListeners;
+
+    Rml::Element *root = nullptr;
+    Rml::DataModelHandle model;
+    bool hasModel = false;
+};