better structure

src/extensions/keypress.rs

@@ -1,3 +1,5 @@
+use std::sync::Arc;
+
 use crossterm::event::KeyEvent;
 
 use crate::{
@@ -13,13 +15,13 @@ impl Event for KeyEvent {
 }
 
 pub trait KeyPressEventHandler {
-    fn on_keypress(&mut self, events: &mut EventManager, event: Box<KeyEvent>);
+    fn on_keypress(&mut self, events: &Arc<EventManager>, event: Box<KeyEvent>);
 }
 
 pub struct KeyPressExtension;
 
 impl Extension for KeyPressExtension {
-    fn init(&mut self, _: &mut Screen, events: &mut EventManager) {
+    fn init(&mut self, _: &mut Screen, events: &Arc<EventManager>) {
         crossterm::terminal::enable_raw_mode().unwrap();
         crate::utils::clear().unwrap();
         crate::utils::hide_cursor().unwrap();
@@ -31,9 +33,9 @@ impl Extension for KeyPressExtension {
         });
     }
 
-    fn tick_start(&mut self, _: &mut Screen, _: &mut EventManager) {}
+    fn tick_start(&mut self, _: &mut Screen, _: &Arc<EventManager>) {}
 
-    fn tick_end(&mut self, _: &mut Screen, events: &mut EventManager) {
+    fn tick_end(&mut self, _: &mut Screen, events: &Arc<EventManager>) {
         if crossterm::event::poll(std::time::Duration::from_millis(13)).unwrap() {
             match crossterm::event::read().unwrap() {
                 crossterm::event::Event::Key(e) => {