120 lines
4.1 KiB
Rust
120 lines
4.1 KiB
Rust
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use ratatui::widgets::BorderType::Rounded;
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use ratatui::widgets::{Cell, Padding, Row, Table};
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use ratatui::{prelude::*, symbols::border, widgets::Block};
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use crate::model::{CellData, FocusState, Model};
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/// Elm render function.
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pub(crate) fn view(model: &mut Model, frame: &mut Frame) {
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let title = Line::from(" Team Time Zones ".bold());
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let instructions = Line::from(match model.focus_state {
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FocusState::Table => vec![
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" Filter ".into(),
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"/".blue().bold(),
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" Quit ".into(),
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"Q ".blue().bold(),
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],
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FocusState::Filter => vec![" Reset ".into(), "<Esc>".blue().bold(), " ".into()],
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});
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let main_block = Block::bordered()
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.title(title.centered().fg(Color::Reset))
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.title_bottom(instructions.centered().fg(Color::Reset))
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.border_set(border::PLAIN)
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.border_style(Style::new().fg(Color::DarkGray))
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.border_type(Rounded);
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frame.render_widget(&main_block, frame.area());
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let visible_locations = model.get_visible_locations();
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let header = Row::new(
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visible_locations
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.iter()
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.map(|location| location.name.as_str())
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.collect::<Vec<&str>>(),
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)
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.cyan()
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.bold();
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let col_widths: Vec<Constraint> = visible_locations
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.iter()
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.map(|location| Constraint::Length(clamp_u16(location.name.len(), 5, 32)))
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.collect();
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// TODO: Figure out a good way to refactor this into a distinct view
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// function without offending the borrow checker.
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let table = Table::new(
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model
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.table_rows
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.iter()
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.map(|row| {
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Row::new(
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row.iter()
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.map(
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|&CellData {
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is_current_time,
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is_daylight,
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datetime,
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}| {
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Cell::new(datetime.format("%H:%M").to_string()).style(
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if is_current_time {
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Style::new().red()
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} else if !is_daylight {
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Style::new().fg(Color::DarkGray)
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} else {
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Style::new()
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},
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)
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},
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)
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.collect::<Vec<Cell>>(),
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)
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})
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.collect::<Vec<Row>>(),
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col_widths,
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)
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.header(header)
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.column_spacing(4)
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.block(Block::new().padding(Padding::horizontal(2)));
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let [table_area, filter_area] = Layout::vertical([
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Constraint::Fill(1),
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Constraint::Length(if model.focus_state == FocusState::Filter {
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1
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} else {
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0
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}),
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])
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.areas(main_block.inner(frame.area()));
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if model.focus_state == FocusState::Filter {
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const FILTER_LABEL_TEXT: &str = "Filter: ";
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let [filter_label_area, filter_input_area] = Layout::horizontal([
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Constraint::Length(
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FILTER_LABEL_TEXT
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.len()
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.try_into()
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.expect("filter label is of static, reasonable length"),
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),
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Constraint::Fill(1),
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])
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.areas(filter_area);
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frame.render_widget(FILTER_LABEL_TEXT.dim(), filter_label_area);
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frame.render_widget(&model.filter_textarea, filter_input_area);
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}
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frame.render_stateful_widget(table, table_area, &mut model.table_state);
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}
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/// Clip a [`usize`]-like value to between two [`u16`]s (inclusive).
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fn clamp_u16<T>(value: T, min: u16, max: u16) -> u16
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where
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T: Into<usize>,
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{
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let value: usize = value.into();
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if value <= min.into() {
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min
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} else if value >= max.into() {
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max
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} else {
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value
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.try_into()
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.expect("value is known to be unsigned and less than some valid u16")
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}
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}
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