use crate::*;
use std::cmp::PartialEq;

/// Root level object for standalone `tek_sequencer`
pub struct SequencerView<E: Engine> {
    /// Controls the JACK transport.
    pub transport: TransportView<E>,
    /// Width of phrase pool
    pub split:     u16,
    /// Pool of all phrases available to the sequencer
    pub phrases:   PhrasePoolView<E>,
    /// Phrase editor view
    pub editor:    PhraseEditor<E>,
    /// Phrase player
    pub player:    MIDIPlayer,
}

/// JACK process callback for sequencer app
impl<E: Engine> Audio for SequencerView<E> {
    fn process (&mut self, client: &Client, scope: &ProcessScope) -> Control {
        self.transport.process(client, scope);
        self.player.process(client, scope);
        Control::Continue
    }
}

impl Content for SequencerView<Tui> {
    type Engine = Tui;
    fn content (&self) -> impl Widget<Engine = Tui> {
        Stack::down(move|add|{
            add(&self.transport)?;
            add(&self.phrases
                .split(Direction::Right, 20, &self.editor as &dyn Widget<Engine = Tui>)
                .min_y(20))
        })
    }
}