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|
use ratatui::{
layout::{Constraint, Rect},
style::{Style, Stylize},
text::Span,
widgets::{Block, Borders, HighlightSpacing, Row, Table, TableState},
Frame,
};
use crate::{exercise::Exercise, state_file::StateFile};
#[derive(Copy, Clone, PartialEq, Eq)]
pub enum Filter {
Done,
Pending,
None,
}
pub struct UiState<'a> {
pub table: Table<'a>,
pub message: String,
pub filter: Filter,
exercises: &'a [Exercise],
selected: usize,
table_state: TableState,
last_ind: usize,
}
impl<'a> UiState<'a> {
pub fn with_updated_rows(mut self, state_file: &StateFile) -> Self {
let mut rows_counter: usize = 0;
let rows = self
.exercises
.iter()
.zip(state_file.progress().iter().copied())
.enumerate()
.filter_map(|(ind, (exercise, done))| {
match (self.filter, done) {
(Filter::Done, false) | (Filter::Pending, true) => return None,
_ => (),
}
rows_counter += 1;
let next = if ind == state_file.next_exercise_ind() {
">>>>".bold().red()
} else {
Span::default()
};
let exercise_state = if done {
"DONE".green()
} else {
"PENDING".yellow()
};
Some(Row::new([
next,
exercise_state,
Span::raw(&exercise.name),
Span::raw(exercise.path.to_string_lossy()),
]))
});
self.table = self.table.rows(rows);
self.last_ind = rows_counter.saturating_sub(1);
self.select(self.selected.min(self.last_ind));
self
}
pub fn new(state_file: &StateFile, exercises: &'a [Exercise]) -> Self {
let header = Row::new(["Next", "State", "Name", "Path"]);
let max_name_len = exercises
.iter()
.map(|exercise| exercise.name.len())
.max()
.unwrap_or(4) as u16;
let widths = [
Constraint::Length(4),
Constraint::Length(7),
Constraint::Length(max_name_len),
Constraint::Fill(1),
];
let table = Table::default()
.widths(widths)
.header(header)
.column_spacing(2)
.highlight_spacing(HighlightSpacing::Always)
.highlight_style(Style::new().bg(ratatui::style::Color::Rgb(50, 50, 50)))
.highlight_symbol("🦀")
.block(Block::default().borders(Borders::BOTTOM));
let selected = state_file.next_exercise_ind();
let table_state = TableState::default()
.with_offset(selected.saturating_sub(10))
.with_selected(Some(selected));
let slf = Self {
table,
message: String::with_capacity(128),
filter: Filter::None,
exercises,
selected,
table_state,
last_ind: 0,
};
slf.with_updated_rows(state_file)
}
#[inline]
pub fn selected(&self) -> usize {
self.selected
}
fn select(&mut self, ind: usize) {
self.selected = ind;
self.table_state.select(Some(ind));
}
pub fn select_next(&mut self) {
self.select(self.selected.saturating_add(1).min(self.last_ind));
}
pub fn select_previous(&mut self) {
self.select(self.selected.saturating_sub(1));
}
#[inline]
pub fn select_first(&mut self) {
self.select(0);
}
#[inline]
pub fn select_last(&mut self) {
self.select(self.last_ind);
}
pub fn draw(&mut self, frame: &mut Frame) {
let area = frame.size();
frame.render_stateful_widget(
&self.table,
Rect {
x: 0,
y: 0,
width: area.width,
height: area.height - 1,
},
&mut self.table_state,
);
let message = if self.message.is_empty() {
// Help footer.
Span::raw(
"↓/j ↑/k home/g end/G │ filter <d>one/<p>ending │ <r>eset │ <c>ontinue at │ <q>uit",
)
} else {
self.message.as_str().blue()
};
frame.render_widget(
message,
Rect {
x: 0,
y: area.height - 1,
width: area.width,
height: 1,
},
);
}
}
|
