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#[path = "common/lib.rs"]
mod common;
use common::{Colors, Result, Terminal};
use ratatui::crossterm::event::{
self, Event, KeyCode, KeyEventKind, MouseButton, MouseEvent, MouseEventKind,
};
use ratatui::{
prelude::*,
widgets::{Block, Borders, Paragraph, Scrollbar, ScrollbarOrientation},
};
use tui_widget_list::hit_test::Hit;
use tui_widget_list::{ListBuilder, ListState, ListView};
fn main() -> Result<()> {
let mut terminal = Terminal::init()?;
App::default().run(&mut terminal)?;
Terminal::reset()?;
terminal.show_cursor()?;
Ok(())
}
#[derive(Default)]
pub struct App;
impl App {
pub fn run(&self, terminal: &mut Terminal) -> Result<()> {
let mut state = ListState::default();
loop {
terminal.draw_app(self, &mut state)?;
match event::read()? {
Event::Key(key) if key.kind == KeyEventKind::Press => match key.code {
KeyCode::Char('q') => return Ok(()),
KeyCode::Up | KeyCode::Char('k') => state.previous(),
KeyCode::Down | KeyCode::Char('j') => state.next(),
_ => {}
},
Event::Mouse(MouseEvent {
kind: MouseEventKind::Down(MouseButton::Left),
column,
row,
..
}) => match state.hit_test(column, row) {
Some(Hit::Item(index)) => state.select(Some(index)),
Some(Hit::Area) | None => {}
},
Event::Mouse(MouseEvent {
kind: MouseEventKind::ScrollUp,
..
}) => {
state.previous();
}
Event::Mouse(MouseEvent {
kind: MouseEventKind::ScrollDown,
..
}) => {
state.next();
}
_ => {}
}
}
}
}
impl StatefulWidget for &App {
type State = ListState;
fn render(self, area: Rect, buf: &mut Buffer, state: &mut Self::State) {
let builder = ListBuilder::new(|context| {
let text = format!("Item {0}", context.index);
let mut item = Line::from(text);
if context.index % 2 == 0 {
item.style = Style::default().bg(Colors::CHARCOAL)
} else {
item.style = Style::default().bg(Colors::BLACK)
};
if context.is_selected {
let mut spans = item.spans;
spans.insert(0, Span::from(">>"));
item = Line::from(spans);
item.style = Style::default().bg(Colors::ORANGE).fg(Colors::CHARCOAL);
};
let style = item.style;
let lines = vec![item, Line::from("")];
let paragraph = Paragraph::new(lines).style(style);
(paragraph, 2)
});
let scrollbar = Scrollbar::new(ScrollbarOrientation::VerticalRight)
.begin_symbol(Some("┐"))
.end_symbol(Some("┘"));
let list = ListView::new(builder, 50)
.block(Block::default().borders(Borders::ALL))
.scrollbar(scrollbar);
list.render(area, buf, state);
}
}
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