finally working event system

src/extensions/keypress.rs

@@ -0,0 +1,46 @@
+use crossterm::event::{KeyCode, KeyModifiers};
+
+use crate::{event_manager::EventManager, Close, Event, Extension, Screen};
+
+#[derive(Clone)]
+pub struct KeyPress(pub crossterm::event::KeyEvent);
+impl Event for KeyPress {
+    fn as_any(self: Box<Self>) -> Box<dyn std::any::Any> {
+        self
+    }
+}
+
+pub trait KeyPressEventHandler {
+    fn on_keypress(&mut self, event: KeyPress);
+}
+
+pub struct KeyPressExtension;
+
+impl Extension for KeyPressExtension {
+    fn init(&mut self, _: &mut Screen, events: &mut EventManager) {
+        crossterm::terminal::enable_raw_mode().unwrap();
+        crate::utils::clear().unwrap();
+        crate::utils::hide_cursor().unwrap();
+
+        events.on(|_: Box<Close>| {
+            crossterm::terminal::disable_raw_mode().unwrap();
+            crate::utils::show_cursor().unwrap();
+            crate::utils::clear().unwrap();
+        });
+    }
+
+    fn tick_start(&mut self, _: &mut Screen, _: &mut EventManager) {}
+
+    fn tick_end(&mut self, _: &mut Screen, events: &mut EventManager) {
+        match crossterm::event::read().unwrap() {
+            crossterm::event::Event::Key(e) => {
+                if e.modifiers.contains(KeyModifiers::CONTROL) && e.code == KeyCode::Char('c') {
+                    events.dispatch(Close);
+                } else {
+                    events.dispatch(KeyPress(e));
+                }
+            }
+            _ => {}
+        }
+    }
+}