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use crate::input::KeyEvent;
use helix_core::{register::Registers, unicode::width::UnicodeWidthStr};
use std::{collections::BTreeSet, fmt::Write};
#[derive(Debug)]
/// Info box used in editor. Rendering logic will be in other crate.
pub struct Info {
/// Title shown at top.
pub title: String,
/// Text body, should contain newlines.
pub text: String,
/// Body width.
pub width: u16,
/// Body height.
pub height: u16,
}
impl Info {
pub fn new(title: &str, body: Vec<(String, String)>) -> Self {
if body.is_empty() {
return Self {
title: title.to_string(),
height: 1,
width: title.len() as u16,
text: "".to_string(),
};
}
let item_width = body.iter().map(|(item, _)| item.width()).max().unwrap();
let mut text = String::new();
for (item, desc) in &body {
let _ = writeln!(text, "{:width$} {}", item, desc, width = item_width);
}
Self {
title: title.to_string(),
width: text.lines().map(|l| l.width()).max().unwrap() as u16,
height: body.len() as u16,
text,
}
}
pub fn from_keymap(title: &str, body: Vec<(&str, BTreeSet<KeyEvent>)>) -> Self {
let body = body
.into_iter()
.map(|(desc, events)| {
let events = events.iter().map(ToString::to_string).collect::<Vec<_>>();
(events.join(", "), desc.to_string())
})
.collect();
Self::new(title, body)
}
pub fn from_registers(registers: &Registers) -> Self {
let body = registers
.inner()
.iter()
.map(|(ch, reg)| {
let content = reg
.read()
.get(0)
.and_then(|s| s.lines().next())
.map(String::from)
.unwrap_or_default();
(ch.to_string(), content)
})
.collect();
let mut infobox = Self::new("Registers", body);
infobox.width = 30; // copied content could be very long
infobox
}
}
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