Cleanup examples

examples/common/lib.rs

@@ -0,0 +1,60 @@
+use crossterm::{
+    event::{DisableMouseCapture, EnableMouseCapture},
+    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
+};
+use ratatui::prelude::CrosstermBackend;
+use std::{
+    error::Error,
+    io::{stdout, Stdout},
+    ops::{Deref, DerefMut},
+};
+
+pub type Result<T> = std::result::Result<T, Box<dyn Error>>;
+
+pub struct Terminal(ratatui::Terminal<CrosstermBackend<Stdout>>);
+
+impl Deref for Terminal {
+    type Target = ratatui::Terminal<CrosstermBackend<Stdout>>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl DerefMut for Terminal {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+impl Terminal {
+    pub fn init() -> Result<Self> {
+        crossterm::execute!(stdout(), EnterAlternateScreen, EnableMouseCapture)?;
+        enable_raw_mode()?;
+
+        let backend = CrosstermBackend::new(stdout());
+
+        let mut terminal = ratatui::Terminal::new(backend)?;
+        terminal.hide_cursor()?;
+
+        fn panic_hook() {
+            let original_hook = std::panic::take_hook();
+
+            std::panic::set_hook(Box::new(move |panic| {
+                Terminal::reset().unwrap();
+                original_hook(panic);
+            }));
+        }
+
+        panic_hook();
+
+        Ok(Self(terminal))
+    }
+
+    pub fn reset() -> Result<()> {
+        disable_raw_mode()?;
+        crossterm::execute!(stdout(), LeaveAlternateScreen, DisableMouseCapture)?;
+
+        Ok(())
+    }
+}