flake-edit 0.3.4

Edit your flake inputs with ease.
Documentation 
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//! TUI rendering logic for the App.

use ratatui::{
    buffer::Buffer,
    layout::Rect,
    widgets::{Block, Borders, Paragraph, Widget, Wrap},
};

use super::app::{App, Screen};
use super::components::confirm::Confirm;
use super::components::input::Input;
use super::components::list::List;
use super::helpers::{color_diff_lines, layouts};
use super::style::BORDER_STYLE;

impl Widget for &App {
    fn render(self, area: Rect, buf: &mut Buffer) {
        match self.screen() {
            Screen::Input(screen) => {
                if self.show_diff() {
                    let diff = self.pending_diff();
                    let diff_lines = diff.lines().count();
                    let (main_area, diff_area) =
                        layouts::content_with_diff_preview(area, diff_lines);
                    Input::new(
                        &screen.state,
                        &screen.prompt,
                        self.context(),
                        screen.label.as_deref(),
                        self.show_diff(),
                    )
                    .render(main_area, buf);
                    render_diff_preview(&diff, diff_area, buf);
                } else {
                    Input::new(
                        &screen.state,
                        &screen.prompt,
                        self.context(),
                        screen.label.as_deref(),
                        self.show_diff(),
                    )
                    .render(area, buf);
                }
            }
            Screen::List(screen) => {
                if self.show_diff() {
                    let diff = self.pending_diff();
                    // Only show diff preview if there's actual content
                    if !diff.is_empty() {
                        let diff_lines = diff.lines().count();
                        let (main_area, diff_area) =
                            layouts::content_with_diff_preview(area, diff_lines);
                        List::new(&screen.state, &screen.items, &screen.prompt, self.context())
                            .render(main_area, buf);
                        render_diff_preview(&diff, diff_area, buf);
                    } else {
                        List::new(&screen.state, &screen.items, &screen.prompt, self.context())
                            .render(area, buf);
                    }
                } else {
                    List::new(&screen.state, &screen.items, &screen.prompt, self.context())
                        .render(area, buf);
                }
            }
            Screen::Confirm(screen) => {
                Confirm::new(&screen.diff, self.context()).render(area, buf);
            }
        }
    }
}

/// Render a diff preview in the given area.
fn render_diff_preview(diff: &str, area: Rect, buf: &mut Buffer) {
    let content = Paragraph::new(color_diff_lines(diff))
        .block(
            Block::default()
                .borders(Borders::TOP | Borders::BOTTOM)
                .border_style(BORDER_STYLE),
        )
        .wrap(Wrap { trim: false });
    content.render(area, buf);
}