Move ctrl-C handling from backend to cursive callbacks

src/backend/crossterm.rs

@@ -98,10 +98,6 @@ impl From<CKeyEvent> for Event {
 
         match event {
             // Handle Char + modifier.
-            CKeyEvent {
-                modifiers: KeyModifiers::CONTROL,
-                code: KeyCode::Char('c'),
-            } => Event::Exit,
             CKeyEvent {
                 modifiers: KeyModifiers::CONTROL,
                 code: KeyCode::Char(c),

src/backend/curses/n.rs

@@ -509,7 +509,6 @@ fn initialize_keymap() -> HashMap<i32, Event> {
         let event = match c {
             // This is Ctrl+C
             // TODO: Don't exit here, but add this as a default callback
-            3 => Event::Exit,
             9 => Event::Key(Key::Tab),
             10 => Event::Key(Key::Enter),
             other => Event::CtrlChar((b'a' - 1 + other as u8) as char),

src/backend/curses/pan.rs

@@ -151,8 +151,6 @@ impl Backend {
                 pancurses::Input::Character('\u{9}') => Event::Key(Key::Tab),
                 pancurses::Input::Character('\u{1b}') => Event::Key(Key::Esc),
                 // Ctrl+C
-                // TODO: Do not sent Exit here, but register it as a default callback
-                pancurses::Input::Character('\u{3}') => Event::Exit,
                 pancurses::Input::Character(c) if (c as u32) <= 26 => {
                     Event::CtrlChar((b'a' - 1 + c as u8) as char)
                 }

src/backend/termion.rs

@@ -120,7 +120,6 @@ impl Backend {
             TEvent::Key(TKey::Char('\n')) => Event::Key(Key::Enter),
             TEvent::Key(TKey::Char('\t')) => Event::Key(Key::Tab),
             TEvent::Key(TKey::Char(c)) => Event::Char(c),
-            TEvent::Key(TKey::Ctrl('c')) => Event::Exit,
             TEvent::Key(TKey::Ctrl(c)) => Event::CtrlChar(c),
             TEvent::Key(TKey::Alt(c)) => Event::AltChar(c),
             TEvent::Mouse(TMouseEvent::Press(btn, x, y)) => {

src/cursive.rs

@@ -150,7 +150,8 @@ impl Cursive {
 
         let (cb_sink, cb_source) = crossbeam_channel::unbounded();
 
-        backend_init().map(|backend| Cursive {
+        let backend = backend_init()?;
+        let mut cursive = Cursive {
             theme,
             root: views::OnEventView::new(views::ScreensView::single_screen(
                 views::StackView::new(),
@@ -164,7 +165,10 @@ impl Cursive {
             fps: None,
             boring_frame_count: 0,
             user_data: Box::new(()),
-        })
+        };
+        cursive.reset_default_callbacks();
+
+        Ok(cursive)
     }
 
     /// Creates a new Cursive root using a ncurses backend.