highlightWidget static method

Implementation

static Widget highlightWidget(
  BuildContext context,
  String text, {
  String? searchKey,
  TextStyle? textStyle,
  TextStyle? highlightStyle,
}) {
  final theme = ChatUIKitTheme.instance;
  TextStyle normalStyle = textStyle ??
      TextStyle(
        color: theme.color.isDark
            ? theme.color.neutralColor98
            : theme.color.neutralColor1,
        fontSize: theme.font.titleMedium.fontSize,
        fontWeight: theme.font.titleMedium.fontWeight,
      );

  TextStyle highStyle = highlightStyle ??
      TextStyle(
        color: theme.color.isDark
            ? theme.color.primaryColor6
            : theme.color.primaryColor5,
        fontWeight: theme.font.titleMedium.fontWeight,
        fontSize: theme.font.titleMedium.fontSize,
      );

  String searchText = text.toLowerCase();
  String keyword = searchKey?.toLowerCase() ?? '';

  Widget? name;
  List<Match> matchList = keyword.allMatches(searchText).toList();
  int lastIndex = 0;

  List<InlineSpan> tmp = [];
  for (var i = 0; i < matchList.length; i++) {
    Match match = matchList[i];
    String str = text.substring(lastIndex, match.start);
    if (str.isNotEmpty) {
      tmp.add(TextSpan(
        text: str,
        style: normalStyle,
      ));
    }

    tmp.add(
      TextSpan(
          text: text.substring(match.start, match.end), style: highStyle),
    );
    lastIndex = match.end;
  }

  if (lastIndex != text.length) {
    tmp.add(TextSpan(
      text: text.substring(lastIndex),
      style: normalStyle,
    ));
  }

  name = RichText(
    overflow: TextOverflow.ellipsis,
    text: TextSpan(
      children: tmp,
      // style: normalStyle,
    ),
    textScaler: TextScaler.noScaling,
    maxLines: 1,
  );

  return name;
}