getParagraphBefore method

Paragraph? getParagraphBefore(
  1. Paragraph paragraph
)

Implementation

Paragraph? getParagraphBefore(Paragraph paragraph) {
  if (paragraphs.isEmpty) return null;
  final int index =
      paragraphs.indexWhere((pr) => pr.id == paragraph.id || pr == paragraph);
  if (index <= 0) return null;
  return paragraphs.elementAt(index - 1);
}