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root.rs
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root.rs
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use std::rc::Rc;
use itertools::Itertools;
use ratatui::{prelude::*, widgets::*};
use crate::{tabs::*, AppContext, THEME};
pub struct Root<'a> {
context: &'a AppContext,
}
impl<'a> Root<'a> {
pub fn new(context: &'a AppContext) -> Self {
Root { context }
}
}
impl Widget for Root<'_> {
fn render(self, area: Rect, buf: &mut Buffer) {
Block::new().style(THEME.root).render(area, buf);
let area = layout(area, Direction::Vertical, vec![1, 0, 1]);
self.render_title_bar(area[0], buf);
self.render_selected_tab(area[1], buf);
self.render_bottom_bar(area[2], buf);
}
}
impl Root<'_> {
fn render_title_bar(&self, area: Rect, buf: &mut Buffer) {
let area = layout(area, Direction::Horizontal, vec![0, 45]);
Paragraph::new(Span::styled("Ratatui", THEME.app_title)).render(area[0], buf);
let titles = vec!["", " Recipe ", " Email ", " Traceroute ", " Weather "];
Tabs::new(titles)
.style(THEME.tabs)
.highlight_style(THEME.tabs_selected)
.select(self.context.tab_index)
.divider("")
.render(area[1], buf);
}
fn render_selected_tab(&self, area: Rect, buf: &mut Buffer) {
let row_index = self.context.row_index;
match self.context.tab_index {
0 => AboutTab::new(row_index).render(area, buf),
1 => RecipeTab::new(row_index).render(area, buf),
2 => EmailTab::new(row_index).render(area, buf),
3 => TracerouteTab::new(row_index).render(area, buf),
4 => WeatherTab::new(row_index).render(area, buf),
_ => unreachable!(),
};
}
fn render_bottom_bar(&self, area: Rect, buf: &mut Buffer) {
let keys = [
("Q/Esc", "Quit"),
("Tab", "Next Tab"),
("↑/k", "Up"),
("↓/j", "Down"),
];
let spans = keys
.iter()
.flat_map(|(key, desc)| {
let key = Span::styled(format!(" {} ", key), THEME.key_binding.key);
let desc = Span::styled(format!(" {} ", desc), THEME.key_binding.description);
[key, desc]
})
.collect_vec();
Paragraph::new(Line::from(spans))
.alignment(Alignment::Center)
.fg(Color::Indexed(236))
.bg(Color::Indexed(232))
.render(area, buf);
}
}
/// simple helper method to split an area into multiple sub-areas
pub fn layout(area: Rect, direction: Direction, heights: Vec<u16>) -> Rc<[Rect]> {
let constraints = heights
.iter()
.map(|&h| {
if h > 0 {
Constraint::Length(h)
} else {
Constraint::Min(0)
}
})
.collect_vec();
Layout::default()
.direction(direction)
.constraints(constraints)
.split(area)
}