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Use a macro to concat the keybindings at compile time

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Joseph Ferano 2023-06-10 10:11:33 +07:00
parent 09177ddbae
commit e3ce612ca3
1 changed files with 11 additions and 10 deletions
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21
src/ui.rs
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@ -189,6 +189,13 @@ pub fn draw_task_popup<B: Backend>(f: &mut Frame<'_, B>, state: &mut State<'_>,
} }
} }
/// Macro to generate keybindings string at compile time
macro_rules! unroll {
(($first_a:literal, $first_b:literal), $(($a:literal, $b:literal)),*) => {
concat!(concat!($first_a, ": ", $first_b) $(," | ", concat!($a, ": ", $b))*)
};
}
pub fn draw<B: Backend>(f: &mut Frame<'_, B>, state: &mut State<'_>) { pub fn draw<B: Backend>(f: &mut Frame<'_, B>, state: &mut State<'_>) {
let main_layout = Layout::default() let main_layout = Layout::default()
.direction(Direction::Vertical) .direction(Direction::Vertical)
@ -212,8 +219,7 @@ pub fn draw<B: Backend>(f: &mut Frame<'_, B>, state: &mut State<'_>) {
let block = Block::default().title("KEYBINDINGS").borders(Borders::TOP); let block = Block::default().title("KEYBINDINGS").borders(Borders::TOP);
// TODO: Cache this let foot_txt = unroll![
let foot_txt = vec![
("quit", "c"), ("quit", "c"),
("navigation", "hjkl"), ("navigation", "hjkl"),
("move task", "HJKL"), ("move task", "HJKL"),
@ -221,14 +227,9 @@ pub fn draw<B: Backend>(f: &mut Frame<'_, B>, state: &mut State<'_>) {
("edit task", "e"), ("edit task", "e"),
("cycle edit fields", "Tab"), ("cycle edit fields", "Tab"),
("column top", "g"), ("column top", "g"),
("column bottom", "G"), ("column bottom", "G")
] ];
.iter()
.map(|(k, b)| {
format!("{k}: {b}")
})
.collect::<Vec<String>>()
.join(" | ");
let footer = Paragraph::new(foot_txt).block(block); let footer = Paragraph::new(foot_txt).block(block);
f.render_widget(footer, main_layout[3]); f.render_widget(footer, main_layout[3]);