Shell + page loading

And:
- some basic stylesheet i found for basic html elements
- a global lua method for navigating pages

src/main.cpp

@@ -1,6 +1,8 @@
-#include "App.hpp"
 #include <GLFW/glfw3.h>
+#include <RmlUi/Core/ElementDocument.h>
+#include <RmlUi/Core/Event.h>
 #include <RmlUi/Debugger/Debugger.h>
+#include <RmlUi/Lua/Interpreter.h>
 #include <iostream>
 #include <RmlUi/Core/Context.h>
 #include <RmlUi/Core/Core.h>
@@ -9,6 +11,11 @@
 #include <RmlUi_Backend.h>
 #include <RmlUi/Debugger.h>
 #include <RmlUi/Lua/Lua.h>
+#include <memory>
+#include "app.hpp"
+#include "test_page.hpp"
+#include "ButtonClickListener.hpp"
+#include "lui_app_api.hpp"
 
 static bool is_initalized = false;
 static bool is_running = false;
@@ -44,6 +51,10 @@ bool InitalizeApplication() {
         return false;
     }
 
+    lua_State* L = Rml::Lua::Interpreter::GetLuaState();
+    AppLuaApi *lua_app_api = new AppLuaApi(app, L);
+    lua_app_api->RegisterLuaBindings();
+
     std::cout << "Application initalized...\n";
 
     return true;
@@ -55,7 +66,7 @@ bool f8_was_pressed = false;
 void handle_input() {
     GLFWwindow *window = glfwGetCurrentContext();
     if(window) {
-        // Reload main page
+        // Reload ui
         bool f5_state = glfwGetKey(window, GLFW_KEY_F5);
         if (f5_state == GLFW_PRESS && !f5_was_pressed) {
             f5_was_pressed = true;
@@ -84,7 +95,25 @@ int main() {
     is_running = true;
 
     std::cout << "Loading UI...\n";
+    
+    app->RegisterPage<TestPagePage>("testPage");
+
+    app->SetupListeners([](Rml::ElementDocument *doc) {
+        if (auto *btn = doc->GetElementById("nav-test")) {
+            app->RegisterListener(btn, std::make_unique<ButtonClickListener>([](Rml::Event&){
+                app->NavigateTo("testPage");
+            }));
+        }
+
+        if (auto *btn = doc->GetElementById("nav-about")) {
+            app->RegisterListener(btn, std::make_unique<ButtonClickListener>([](Rml::Event&){
+                app->NavigateTo("about");
+            }));
+        }
+    });
+    
     app->LoadUi();
+    app->NavigateTo("lua-test");
     std::cout << "UI Loaded\n";
 
     while (is_running) {
@@ -98,8 +127,9 @@ int main() {
         Backend::PresentFrame();
     }
 
-    delete app;
+    app->Shutdown();
     Rml::Shutdown();
+    delete app;
     Backend::Shutdown();
 
     return 0;