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/// This trait is used with `Parser::process_cb` to handle extra escape
/// sequences that don't have an impact on the terminal screen directly.
pub trait Callbacks {
/// This callback is called when the terminal requests an audible bell
/// (typically with `^G`).
fn audible_bell(&mut self, _: &mut crate::Screen) {}
/// This callback is called when the terminal requests an visual bell
/// (typically with `\eg`).
fn visual_bell(&mut self, _: &mut crate::Screen) {}
/// This callback is called when the terminal requests a resize
/// (typically with `\e[8;<rows>;<cols>t`).
fn resize(&mut self, _: &mut crate::Screen, _request: (u16, u16)) {}
/// This callback is called when the terminal receives invalid input
/// (such as an invalid UTF-8 character or an unused control character).
fn error(&mut self, _: &mut crate::Screen) {}
}
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