4 files changed, 42 insertions, 3 deletions
diff --git a/src/ui/include/screen.hpp b/src/ui/include/screen.hpp
index 87a0d9b8..7ff06fbd 100644
--- a/src/ui/include/screen.hpp
+++ b/src/ui/include/screen.hpp
@@ -8,6 +8,7 @@
 
 #include <memory>
 
+#include "core/lv_group.h"
 #include "core/lv_obj.h"
 #include "core/lv_obj_tree.h"
 #include "lvgl.h"
@@ -16,13 +17,20 @@ namespace ui {
 
 class Screen {
  public:
-  Screen() : root_(lv_obj_create(NULL)) {}
-  virtual ~Screen() { lv_obj_del(root_); }
+  Screen() : root_(lv_obj_create(NULL)), group_(lv_group_create()) {}
+  virtual ~Screen() {
+    lv_obj_del(root_);
+    lv_group_del(group_);
+  }
+
+  virtual auto Tick() -> void {}
 
   auto root() -> lv_obj_t* { return root_; }
+  auto group() -> lv_group_t* { return group_; }
 
  protected:
   lv_obj_t* const root_;
+  lv_group_t* const group_;
 };
 
 }  // namespace ui
diff --git a/src/ui/include/screen_menu.hpp b/src/ui/include/screen_menu.hpp
index a0b07b9e..e4cc0e78 100644
--- a/src/ui/include/screen_menu.hpp
+++ b/src/ui/include/screen_menu.hpp
@@ -7,7 +7,9 @@
 #pragma once
 
 #include <memory>
+#include <vector>
 
+#include "index.hpp"
 #include "lvgl.h"
 
 #include "screen.hpp"
@@ -17,10 +19,11 @@ namespace screens {
 
 class Menu : public Screen {
  public:
-  Menu();
+  explicit Menu(std::vector<database::IndexInfo> indexes);
   ~Menu();
 
  private:
+  std::vector<database::IndexInfo> indexes_;
   lv_obj_t* container_;
   lv_obj_t* label_;
 };
diff --git a/src/ui/include/ui_events.hpp b/src/ui/include/ui_events.hpp
index af07a71d..fabc56fc 100644
--- a/src/ui/include/ui_events.hpp
+++ b/src/ui/include/ui_events.hpp
@@ -6,6 +6,8 @@
 
 #pragma once
 
+#include "database.hpp"
+#include "index.hpp"
 #include "tinyfsm.hpp"
 
 namespace ui {
@@ -20,4 +22,16 @@ struct OnStorageChange : tinyfsm::Event {
 
 struct OnSystemError : tinyfsm::Event {};
 
+namespace internal {
+
+struct RecordSelected : tinyfsm::Event {
+  database::IndexRecord record;
+};
+
+struct IndexSelected : tinyfsm::Event {
+  database::IndexInfo index;
+};
+
+}  // namespace internal
+
 }  // namespace ui
diff --git a/src/ui/include/ui_fsm.hpp b/src/ui/include/ui_fsm.hpp
index 4de9344c..32275fab 100644
--- a/src/ui/include/ui_fsm.hpp
+++ b/src/ui/include/ui_fsm.hpp
@@ -7,6 +7,7 @@
 #pragma once
 
 #include <memory>
+#include <stack>
 
 #include "relative_wheel.hpp"
 #include "tinyfsm.hpp"
@@ -16,6 +17,7 @@
 #include "storage.hpp"
 #include "system_events.hpp"
 #include "touchwheel.hpp"
+#include "ui_events.hpp"
 
 namespace ui {
 
@@ -37,15 +39,23 @@ class UiState : public tinyfsm::Fsm<UiState> {
 
   virtual void react(const system_fsm::KeyLockChanged&){};
 
+  virtual void react(const internal::RecordSelected&){};
+  virtual void react(const internal::IndexSelected&){};
+
   virtual void react(const system_fsm::DisplayReady&) {}
   virtual void react(const system_fsm::BootComplete&) {}
+  virtual void react(const system_fsm::StorageMounted&) {}
 
  protected:
+  void PushScreen(std::shared_ptr<Screen>);
+
   static drivers::IGpios* sIGpios;
   static std::shared_ptr<drivers::TouchWheel> sTouchWheel;
   static std::shared_ptr<drivers::RelativeWheel> sRelativeWheel;
   static std::shared_ptr<drivers::Display> sDisplay;
+  static std::weak_ptr<database::Database> sDb;
 
+  static std::stack<std::shared_ptr<Screen>> sScreens;
   static std::shared_ptr<Screen> sCurrentScreen;
 };
 
@@ -61,7 +71,11 @@ class Splash : public UiState {
 class Interactive : public UiState {
   void entry() override;
 
+  void react(const internal::RecordSelected&) override;
+  void react(const internal::IndexSelected&) override;
+
   void react(const system_fsm::KeyLockChanged&) override;
+  void react(const system_fsm::StorageMounted&) override;
 };
 
 class FatalError : public UiState {};