Position Position::leadingWhitespacePosition(EAffinity affinity, bool considerNonCollapsibleWhitespace) const { if (isNull()) return Position(); if (upstream(StayInBlock).node()->id() == ID_BR) return Position(); Position prev = previousCharacterPosition(affinity); if (prev != *this && prev.node()->inSameContainingBlockFlowElement(node()) && prev.node()->isTextNode()) { DOMString string = static_cast<TextImpl *>(prev.node())->data(); const QChar &c = string[prev.offset()]; if (considerNonCollapsibleWhitespace ? (c.isSpace() || c.unicode() == 0xa0) : isCollapsibleWhitespace(c)) return prev; } return Position(); }
int consumer() { return upstream(); }