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use crate::input::KeyEvent;
use std::fmt::Write;
use unicode_width::UnicodeWidthStr;
#[derive(Debug)]
/// Info box used in editor. Rendering logic will be in other crate.
pub struct Info {
/// Title kept as static str for now.
pub title: &'static str,
/// Text body, should contains newline.
pub text: String,
/// Body width.
pub width: u16,
/// Body height.
pub height: u16,
}
impl Info {
pub fn key(title: &'static str, body: Vec<(Vec<KeyEvent>, &'static str)>) -> Info {
let keymaps_width: u16 = body
.iter()
.map(|r| r.0.iter().map(|e| e.width() as u16 + 2).sum::<u16>() - 2)
.max()
.unwrap();
let mut text = String::new();
let mut width = 0;
let height = body.len() as u16;
for (mut keyevents, desc) in body {
let keyevent = keyevents.remove(0);
let mut left = keymaps_width - keyevent.width() as u16;
write!(text, "{}", keyevent).ok();
for keyevent in keyevents {
write!(text, ", {}", keyevent).ok();
left -= 2 + keyevent.width() as u16;
}
for _ in 0..left {
text.push(' ');
}
if keymaps_width + 2 + (desc.width() as u16) > width {
width = keymaps_width + 2 + desc.width() as u16;
}
writeln!(text, " {}", &desc).ok();
}
Info {
title,
text,
width,
height,
}
}
}
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