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use std::sync::mpsc::Receiver;
use tui::{backend::Backend, layout::Rect, Terminal};
use crate::tuice::Status;
use super::{build_layout_tree, Application, Element, Event, TmpComponent};
#[derive(Clone, Copy, Debug)]
pub enum RuntimeEvent<Message> {
UserInterface(Event),
Resize { width: u16, height: u16 },
Custom(Message),
}
pub(crate) fn launch<A, B>(
mut application: A, receiver: Receiver<RuntimeEvent<A::Message>>, terminal: &mut Terminal<B>,
) -> anyhow::Result<()>
where
A: Application + 'static,
B: Backend,
{
let mut user_interface = application.view();
draw(&mut user_interface, terminal)?;
while !application.is_terminated() {
if let Ok(event) = receiver.recv() {
match event {
RuntimeEvent::UserInterface(event) => {
let mut messages = vec![];
let rect = Rect::default(); // FIXME: TEMP
match user_interface.on_event(rect, event, &mut messages) {
Status::Captured => {}
Status::Ignored => {
application.global_event_handler(event, &mut messages);
}
}
for msg in messages {
debug!("Message: {:?}", msg); // FIXME: Remove this debug line!
application.update(msg);
}
user_interface = application.view();
draw(&mut user_interface, terminal)?;
}
RuntimeEvent::Custom(message) => {
application.update(message);
}
RuntimeEvent::Resize {
width: _,
height: _,
} => {
user_interface = application.view();
// FIXME: Also nuke any cache and the like...
draw(&mut user_interface, terminal)?;
}
}
} else {
break;
}
}
application.destroy();
Ok(())
}
fn draw<M, B>(user_interface: &mut Element<'_, M>, terminal: &mut Terminal<B>) -> anyhow::Result<()>
where
B: Backend,
{
terminal.draw(|frame| {
let rect = frame.size();
let layout = build_layout_tree(rect, &user_interface);
let context = super::DrawContext::root(&layout);
user_interface.draw(context, frame);
})?;
Ok(())
}
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