use crate::*;

impl Handle<Tui> for Sequencer<Tui> {
    fn handle (&mut self, from: &Tui) -> Perhaps<bool> {
        match from.event() {
            // NONE, "seq_cursor_up",    "move cursor up", |sequencer: &mut Sequencer| {
            key!(KeyCode::Up) => {
                match self.entered {
                    true  => { self.note_axis.point_dec(); },
                    false => { self.note_axis.start_dec(); },
                }
                Ok(Some(true))
            },
            // NONE, "seq_cursor_down",  "move cursor down", |self: &mut Sequencer| {
            key!(KeyCode::Down) => {
                match self.entered {
                    true  => { self.note_axis.point_inc(); },
                    false => { self.note_axis.start_inc(); },
                }
                Ok(Some(true))
            },
            // NONE, "seq_cursor_left",  "move cursor up", |self: &mut Sequencer| {
            key!(KeyCode::Left) => {
                match self.entered {
                    true  => { self.time_axis.point_dec(); },
                    false => { self.time_axis.start_dec(); },
                }
                Ok(Some(true))
            },
            // NONE, "seq_cursor_right", "move cursor up", |self: &mut Sequencer| {
            key!(KeyCode::Right) => {
                match self.entered {
                    true  => { self.time_axis.point_inc(); },
                    false => { self.time_axis.start_inc(); },
                }
                Ok(Some(true))
            },
            // NONE, "seq_mode_switch", "switch the display mode", |self: &mut Sequencer| {
            key!(KeyCode::Char('`')) => {
                self.mode = !self.mode;
                Ok(Some(true))
            },
            _ => Ok(None)
        }
    }
}