Method get_selected_text

crates/opencode-tui/src/ui/selection.rs:112–150

Extract the selected text using a callback that returns the full line content for a given row number.

(&self, get_line: F)

    /// Extract the selected text using a callback that returns the full line
    /// content for a given row number.
    pub fn get_selected_text<F>(&self, get_line: F) -> String
    where
        F: Fn(u16) -> Option<String>,
    {
        let ((r0, c0), (r1, c1)) = match self.range() {
            Some(r) => r,
            None => return String::new(),
        };

        let mut result = String::new();

        for row in r0..=r1 {
            let line = match get_line(row) {
                Some(l) => l,
                None => continue,
            };

            let selected = if r0 == r1 {
                // Single line: clip both ends
                slice_by_columns(&line, c0 as usize, c1.saturating_add(1) as usize)
            } else if row == r0 {
                // First row: from col to end
                slice_from_column(&line, c0 as usize)
            } else if row == r1 {
                // Last row: from start to col
                slice_to_column(&line, c1.saturating_add(1) as usize)
            } else {
                // Middle row: full line
                line
            };

            if !result.is_empty() {
                result.push('\n');
            }
            result.push_str(selected.trim_end());
        }

        result
    }
}

fn slice_by_columns(line: &str, start_col: usize, end_col_exclusive: usize) -> String {