public Couple<String> setText(@Nullable final String text, @Nullable final String requestor) {
    if (StringUtil.isEmpty(text)
        && !Comparing.equal(requestor, myCurrentRequestor)
        && !EventLog.LOG_REQUESTOR.equals(requestor)) {
      return Couple.of(myInfoPanel.getText(), myCurrentRequestor);
    }

    boolean logMode = myInfoPanel.updateText(EventLog.LOG_REQUESTOR.equals(requestor) ? "" : text);
    myCurrentRequestor = logMode ? EventLog.LOG_REQUESTOR : requestor;
    return Couple.of(text, requestor);
  }
  private static Couple<Integer> composeText(
      StringBuilder sb,
      List<Pair<String, HighlightInfo>> list,
      int index,
      String text,
      int endPos,
      int startPos) {
    int i = index;
    while (i < list.size()) {
      Pair<String, HighlightInfo> pair = list.get(i);
      HighlightInfo info = pair.second;
      if (info.endOffset <= startPos) {
        break;
      }

      String severity = pair.first;
      HighlightInfo prev = i < list.size() - 1 ? list.get(i + 1).second : null;

      sb.insert(0, text.substring(info.endOffset, endPos));
      sb.insert(0, "</" + severity + ">");
      endPos = info.endOffset;
      if (prev != null && prev.endOffset > info.startOffset) {
        Couple<Integer> result = composeText(sb, list, i + 1, text, endPos, info.startOffset);
        i = result.first - 1;
        endPos = result.second;
      }
      sb.insert(0, text.substring(info.startOffset, endPos));
      sb.insert(0, "<" + severity + " descr=\"" + info.getDescription() + "\">");

      endPos = info.startOffset;
      i++;
    }

    return Couple.newOne(i, endPos);
  }
  private static Couple<Integer> composeText(
      StringBuilder sb,
      List<Pair<String, HighlightInfo>> list,
      int index,
      String text,
      int endPos,
      int startPos,
      boolean showAttributesKeys) {
    int i = index;
    while (i < list.size()) {
      Pair<String, HighlightInfo> pair = list.get(i);
      HighlightInfo info = pair.second;
      if (info.endOffset <= startPos) {
        break;
      }

      String severity = pair.first;
      HighlightInfo prev = i < list.size() - 1 ? list.get(i + 1).second : null;

      sb.insert(0, text.substring(info.endOffset, endPos));
      sb.insert(0, "</" + severity + ">");
      endPos = info.endOffset;
      if (prev != null && prev.endOffset > info.startOffset) {
        Couple<Integer> result =
            composeText(sb, list, i + 1, text, endPos, info.startOffset, showAttributesKeys);
        i = result.first - 1;
        endPos = result.second;
      }
      sb.insert(0, text.substring(info.startOffset, endPos));

      String str =
          "<"
              + severity
              + " descr=\""
              + StringUtil.escapeQuotes(String.valueOf(info.getDescription()))
              + "\"";
      if (showAttributesKeys) {
        str += " textAttributesKey=\"" + info.forcedTextAttributesKey + "\"";
      }
      str += ">";
      sb.insert(0, str);

      endPos = info.startOffset;
      i++;
    }

    return Couple.of(i, endPos);
  }