next/previous buffer

src/action.rs

@@ -57,12 +57,18 @@ pub enum Action {
 	Redo,
 	
 	Save,
+	
+	PreviousBuffer,
+	NextBuffer,
 }
 
 // actions that act on the app as a whole, not just one buffer
 pub enum AppAction {
 	QuitIfSaved,
 	Quit,
+	
+	PreviousBuffer,
+	NextBuffer,
 }
 
 impl Buffer {
@@ -122,6 +128,9 @@ impl Buffer {
 			Action::Redo => self.redo(),
 			
 			Action::Save => self.save(),
+			
+			Action::PreviousBuffer => return Some(AppAction::PreviousBuffer),
+			Action::NextBuffer => return Some(AppAction::NextBuffer),
 		}
 		
 		None

src/app/mod.rs

@@ -1,5 +1,5 @@
 use std::{env, process::exit};
-use crossterm::{event::{self, Event, KeyEvent}, terminal::window_size};
+use crossterm::{event::{self, Event, KeyCode, KeyEvent, KeyModifiers}, terminal::window_size};
 use ratatui::{style::Stylize, text::Span};
 use crate::{BYTES_PER_LINE, action::AppAction, buffer::Buffer, config::Config};
 
@@ -71,6 +71,14 @@ impl App {
 	}
 	
 	fn handle_key(&mut self, key_event: KeyEvent) {
+		if key_event.modifiers == KeyModifiers::CONTROL &&
+		   key_event.code == KeyCode::Char('c')
+		{
+			crossterm::terminal::disable_raw_mode().unwrap();
+			ratatui::restore();
+			exit(130);
+		}
+		
 		let maybe_app_action = self.buffers[self.current_buffer_index].handle_key(
 			key_event,
 			&self.config,
@@ -81,6 +89,9 @@ impl App {
 			match app_action {
 				AppAction::QuitIfSaved => self.quit_if_saved(),
 				AppAction::Quit => self.quit(),
+				
+				AppAction::PreviousBuffer => self.previous_buffer(),
+				AppAction::NextBuffer => self.next_buffer(),
 			}
 		}
 	}
@@ -99,6 +110,22 @@ impl App {
 		self.should_quit = true;
 	}
 	
+	const fn previous_buffer(&mut self) {
+		if self.current_buffer_index == 0 {
+			self.current_buffer_index = self.buffers.len() - 1;
+		} else {
+			self.current_buffer_index -= 1;
+		}
+	}
+	
+	const fn next_buffer(&mut self) {
+		if self.current_buffer_index == self.buffers.len() - 1 {
+			self.current_buffer_index = 0;
+		} else {
+			self.current_buffer_index += 1;
+		}
+	}
+	
 	pub fn current_buffer(&self) -> &Buffer {
 		&self.buffers[self.current_buffer_index]
 	}

src/config.rs

@@ -138,6 +138,9 @@ impl Default for Config {
 					
 					("u".try_into().unwrap(), Action::Undo),
 					("U".try_into().unwrap(), Action::Redo),
+					
+					("C-j".try_into().unwrap(), Action::PreviousBuffer),
+					("C-l".try_into().unwrap(), Action::NextBuffer),
 				].into()),
 				(Some(PartialAction::Goto), [
 					("j".try_into().unwrap(), Action::GotoLineStart),

src/main.rs

@@ -57,6 +57,7 @@ const CHUNKS_PER_LINE: usize = BYTES_PER_LINE / BYTES_PER_CHUNK;
 fn main() {
 	let mut app = App::new();
 	let mut terminal = ratatui::init();
+	crossterm::terminal::enable_raw_mode().unwrap();
 	
 	while !app.should_quit {
 		terminal.draw(|frame| {
@@ -66,6 +67,7 @@ fn main() {
 		app.handle_events();
 	}
 	
+	crossterm::terminal::disable_raw_mode().unwrap();
 	ratatui::restore();
 	
 	// dbg!(app.edit_history);