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use crossterm::event::{DisableMouseCapture, EnableMouseCapture};
use crossterm::terminal::{
disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen,
};
use ratatui::backend::CrosstermBackend;
use ratatui::layout::{Constraint, Direction, Layout};
use ratatui::style::{Color, Modifier, Style};
use ratatui::widgets::{Block, Borders};
use ratatui::Terminal;
use std::io;
use tui_textarea::{Input, Key, TextArea};
fn inactivate(textarea: &mut TextArea<'_>) {
textarea.set_cursor_line_style(Style::default());
textarea.set_cursor_style(Style::default());
textarea.set_block(
Block::default()
.borders(Borders::ALL)
.style(Style::default().fg(Color::DarkGray))
.title(" Inactive (^X to switch) "),
);
}
fn activate(textarea: &mut TextArea<'_>) {
textarea.set_cursor_line_style(Style::default().add_modifier(Modifier::UNDERLINED));
textarea.set_cursor_style(Style::default().add_modifier(Modifier::REVERSED));
textarea.set_block(
Block::default()
.borders(Borders::ALL)
.style(Style::default())
.title(" Active "),
);
}
fn main() -> io::Result<()> {
let stdout = io::stdout();
let mut stdout = stdout.lock();
enable_raw_mode()?;
crossterm::execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
let backend = CrosstermBackend::new(stdout);
let mut term = Terminal::new(backend)?;
let mut textarea = [TextArea::default(), TextArea::default()];
let layout = Layout::default()
.direction(Direction::Horizontal)
.constraints([Constraint::Percentage(50), Constraint::Percentage(50)].as_ref());
let mut which = 0;
activate(&mut textarea[0]);
inactivate(&mut textarea[1]);
loop {
term.draw(|f| {
let chunks = layout.split(f.area());
for (textarea, chunk) in textarea.iter().zip(chunks.iter()) {
f.render_widget(textarea, *chunk);
}
})?;
match crossterm::event::read()?.into() {
Input { key: Key::Esc, .. } => break,
Input {
key: Key::Char('x'),
ctrl: true,
..
} => {
inactivate(&mut textarea[which]);
which = (which + 1) % 2;
activate(&mut textarea[which]);
}
input => {
textarea[which].input(input);
}
}
}
disable_raw_mode()?;
crossterm::execute!(
term.backend_mut(),
LeaveAlternateScreen,
DisableMouseCapture
)?;
term.show_cursor()?;
println!("Left textarea: {:?}", textarea[0].lines());
println!("Right textarea: {:?}", textarea[1].lines());
Ok(())
}
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