Common StatusLine parts

The most relevant parts for pretty much every StatusLine are the following.

Formatted status parts:

• name_txt: Prints the File's name and some info about it's newness.
• Uses the forms file, file.new, file.new.scratch and file.unsaved.
• mode_txt: The lowercased name of the Mode, e.g. "insert", "normal".
  • Uses the form mode.
• main_txt: Prints the main selection's column and line, and the number of lines. 1 indexed.
  • Uses the forms coord and separator.
• sels_txt: Prints the number of selections.
  • Uses the form selections;
• cur_map_txt: Prints the keys being mapped.
  • Uses the forms key and key.special

Unformatted status parts:

• main_byte, main_char, main_line, main_col: Parts of the main cursor.
• mode_name: The raw type name of the mode. Could look something like Prompt<IncSearcher<SearchFwd>, Ui>, Ui>.
• selections: The number of selections, no formatting.
• last_key: The last key that was typed. Useful for asciinema demonstrations.

Other:

• Spacer: This isn't actually a StatusPart, it's a Tag that can go in any Text, which includes the StatusLine's.
• AlignLeft, AlignCenter, AlignRight: These Tags (like all others) can also be used in the StatusLine. However, do note that they are applied line wise. Using any of them will shift the whole line's alignment. For that reason, a Spacer should generally be preferred.
• Forms like [file]. Any form can be placed within those braces, and they are all evaluated at compile time.

Some examples

This is the default:

#![allow(unused)]
fn main() {
use duat::prelude::*;
hook::add::<StatusLine<Ui>>(|pa, (cfg, _)| {
    cfg.fmt(status!("{name_txt}{Spacer}{} {sels_txt} {main_txt}", mode_txt(pa)))
});
}

If you want a one sided StatusLine, you can do this:

#![allow(unused)]
fn main() {
use duat::prelude::*;
hook::add::<StatusLine<Ui>>(|pa, (cfg, _)| {
    cfg.fmt(status!("{Spacer}{name_txt} {} {sels_txt} {main_txt}", mode_txt(pa)))
});
}

Customized main_txt:

#![allow(unused)]
fn main() {
use duat::prelude::*;
hook::add::<StatusLine<Ui>>(|pa, (cfg, _)| {
    cfg.fmt(status!(
        "{name_txt}{Spacer}{} {sels_txt} [coord]c{main_col} l{main_line}[separator]|[coord]{}",
        mode_txt(pa),
        |file: &File| file.text().len().line()
    ))
});
}

Customized name_txt:

#![allow(unused)]
fn main() {
use duat::prelude::*;

fn name_txt(file: &File) -> Text {
    let mut b = Text::builder();

    if let Some(name) = file.name_set() {
        b.push(txt!("[file]{name}"));
        if !file.exists() {
            b.push(txt!("[file.new][[new file]]"));
        } else if file.text().has_unsaved_changes() {
            b.push(txt!("[file.unsaved][[has changes]]"));
        }
        if let Some("rust") = file.filetype() {
            b.push(txt!("[[🦀]]"));
        }
    } else {
        b.push(txt!("[file.new.scratch]?!?!?!"));
    }

    b.build()
}

hook::add::<StatusLine<Ui>>(|pa, (cfg, _)| {
    cfg.fmt(status!("{name_txt}{Spacer}{} {sels_txt} {main_txt}", mode_txt(pa)))
});
}