Function draw_chat

cake-cli/src/chat.rs:381–440

(frame: &mut Frame, app: &mut App, area: Rect)

}

fn draw_chat(frame: &mut Frame, app: &mut App, area: Rect) {
    let layout = Layout::vertical([
        Constraint::Min(1),   // messages
        Constraint::Length(3), // input
    ])
    .split(area);

    // Messages area
    let msg_area = layout[0];
    let inner_width = msg_area.width.saturating_sub(2);
    let visible_height = msg_area.height.saturating_sub(2);

    let all_lines = build_message_lines(app, inner_width);
    app.total_lines = all_lines.len() as u16;

    if app.auto_scroll {
        app.scroll_to_bottom(visible_height);
    }

    let msg_block = Block::default()
        .borders(Borders::ALL)
        .border_style(Style::default().fg(Color::DarkGray));

    let messages_widget = Paragraph::new(all_lines)
        .block(msg_block)
        .scroll((app.scroll_offset, 0));

    frame.render_widget(messages_widget, msg_area);

    if app.total_lines > visible_height {
        let mut scrollbar_state = ScrollbarState::new(app.total_lines as usize)
            .position(app.scroll_offset as usize)
            .viewport_content_length(visible_height as usize);
        frame.render_stateful_widget(
            Scrollbar::new(ScrollbarOrientation::VerticalRight),
            msg_area.inner(Margin::new(0, 1)),
            &mut scrollbar_state,
        );
    }

    // Input area
    let input_block = Block::default()
        .borders(Borders::ALL)
        .border_style(if app.streaming {
            Style::default().fg(Color::DarkGray)
        } else {
            Style::default().fg(Color::Cyan)
        })
        .title(" message ");

    let input_widget = Paragraph::new(app.input.as_str()).block(input_block);
    frame.render_widget(input_widget, layout[1]);

    if !app.streaming {
        frame.set_cursor_position((
            layout[1].x + 1 + app.cursor_pos as u16,
            layout[1].y + 1,
        ));