prevMatch method
void
prevMatch()
Implementation
void prevMatch() {
if (searchItemCurrentIndex - 1 < 0) {
searchItemCurrentIndex = matches.length - 1;
} else {
searchItemCurrentIndex -= 1;
}
searchAndReplaceMatchHighlights
..clear()
..addAll(
generateSearchAndReplaceHighlights(
matches: matches,
wordWidth: searchText.length,
),
);
}