refactor: move updating status from the move cursor command

3 files changed, 46 insertions, 4 deletions

diff --git a/src/engine/graphics/scene.cpp b/src/engine/graphics/scene.cpp
index 476b966..4e382fe 100644
--- a/src/engine/graphics/scene.cpp
+++ b/src/engine/graphics/scene.cpp
@@ -52,7 +52,8 @@ void Scene::write_status(const std::string_view &str) noexcept
 	const auto window_size = _window->size();
 
 	_cursor_controller->move_to(
-		Vector2({.x = 2, .y = static_cast<Vector2::Value>(window_size.get_height())}));
+		Vector2({.x = 2, .y = static_cast<Vector2::Value>(window_size.get_height())}),
+		true);
 
 	auto background_color = get_background_esc_seq(STATUSBAR_COLOR);
 
@@ -61,7 +62,7 @@ void Scene::write_status(const std::string_view &str) noexcept
 	fmt::print(fmt::runtime(str.data()));
 	fmt::print(RESET_ALL_MODES, fmt::arg("esc", ESC));
 
-	_cursor_controller->move_to(previous_position);
+	_cursor_controller->move_to(previous_position, true);
 }
 
 const std::shared_ptr<IMatrix<std::string_view>> &Scene::get_matrix() const noexcept
diff --git a/src/engine/user/cursor.cpp b/src/engine/user/cursor.cpp
index b02a9bc..2a72663 100644
--- a/src/engine/user/cursor.cpp
+++ b/src/engine/user/cursor.cpp
@@ -16,15 +16,22 @@ void CursorController::move(const Vector2 &direction, const uint32_t &amount) no
 	std::cout.flush();
 
 	_position = _position.to_direction(direction, static_cast<Vector2::Value>(amount));
+
+	notify_subscribers(CursorEvent::POSITION_CHANGE, _position);
 }
 
-void CursorController::move_to(const Vector2 &position) noexcept
+void CursorController::move_to(const Vector2 &position, bool silent) noexcept
 {
 	fmt::print(MOVE_CURSOR_TO, fmt::arg("esc", ESC), fmt::arg("row", position.get_y()),
 			   fmt::arg("column", position.get_x()));
 	std::cout.flush();
 
 	_position = position;
+
+	if (!silent)
+	{
+		notify_subscribers(CursorEvent::POSITION_CHANGE, position);
+	}
 }
 
 Vector2 CursorController::where() const noexcept
@@ -43,6 +50,8 @@ void CursorController::ensure_position() noexcept
 	scanf("\033[%u;%uR", &vector2_options.y, &vector2_options.x);
 
 	_position = Vector2(vector2_options);
+
+	notify_subscribers(CursorEvent::POSITION_CHANGE, _position);
 }
 
 void CursorController::hide() noexcept
@@ -56,3 +65,28 @@ void CursorController::show() noexcept
 	fmt::print(CURSOR_VISIBLE, fmt::arg("esc", ESC));
 	std::cout.flush();
 }
+
+void CursorController::subscribe(const Event &event,
+								 const Subscriber &subscriber) noexcept
+{
+	if (_subscribers.count(event) == 0)
+	{
+		_subscribers.insert({event, std::vector<Subscriber>()});
+	}
+
+	_subscribers.at(event).push_back(subscriber);
+}
+
+void CursorController::notify_subscribers(const Event &event,
+										  const Context &context) const noexcept
+{
+	if (_subscribers.count(event) == 0)
+	{
+		return;
+	}
+
+	for (const auto &subscriber : _subscribers.at(event))
+	{
+		subscriber->update(context);
+	}
+}
diff --git a/src/engine/user/cursor.hpp b/src/engine/user/cursor.hpp
index 713ee31..3ba8a40 100644
--- a/src/engine/user/cursor.hpp
+++ b/src/engine/user/cursor.hpp
@@ -37,7 +37,7 @@ public:
 
 	void move(const Vector2 &direction, const uint32_t &amount) noexcept override;
 
-	void move_to(const Vector2 &position) noexcept override;
+	void move_to(const Vector2 &position, bool silent) noexcept override;
 
 	[[nodiscard]] Vector2 where() const noexcept override;
 
@@ -47,6 +47,13 @@ public:
 
 	static void show() noexcept;
 
+	void subscribe(const Event &event, const Subscriber &subscriber) noexcept override;
+
+	void notify_subscribers(const Event &event,
+							const Context &context) const noexcept override;
+
 private:
 	Vector2 _position;
+
+	std::unordered_map<CursorEvent, std::vector<Subscriber>> _subscribers;
 };