Method build_visual_lines

src/apps/cli/src/ui/text_input.rs:312–355

Build visual lines with wrap. Returns the lines and uses `style` for the text content.

(&self, inner_width: u16, style: &TextInputStyle)

    /// Build visual lines with wrap. Returns the lines and uses `style` for the text content.
    fn build_visual_lines(&self, inner_width: u16, style: &TextInputStyle) -> Vec<Line<'static>> {
        let prefix_w = style.prefix_display_width();
        let avail = Self::avail_width(inner_width, prefix_w);
        let mut visual_lines: Vec<Line<'static>> = Vec::new();

        for (i, logical_line) in self.input.split('\n').enumerate() {
            let prefix = if i == 0 {
                style.first_line_prefix
            } else {
                style.continuation_prefix
            };
            if logical_line.is_empty() {
                visual_lines.push(Line::from(vec![Span::raw(prefix.to_string())]));
            } else {
                let mut chars = logical_line.chars().peekable();
                let mut first_segment = true;
                while chars.peek().is_some() {
                    let seg_prefix = if first_segment {
                        prefix
                    } else {
                        style.continuation_prefix
                    };
                    let mut segment = String::new();
                    let mut seg_w = 0usize;
                    while let Some(&ch) = chars.peek() {
                        let ch_w = UnicodeWidthChar::width(ch).unwrap_or(0);
                        if seg_w + ch_w > avail && seg_w > 0 {
                            break;
                        }
                        segment.push(ch);
                        seg_w += ch_w;
                        chars.next();
                    }
                    visual_lines.push(Line::from(vec![
                        Span::raw(seg_prefix.to_string()),
                        Span::styled(segment, style.text_style),
                    ]));
                    first_segment = false;
                }
            }
        }

        visual_lines
    }

    /// Render the text input content into the given inner area (no block/border).
    /// Sets cursor position on frame. Pass `show_cursor = false` to skip cursor.