private void setLogTypeValues(final Collection<LogType> logTypes) {
        if (this.originalLogEntry != null && !logTypes.contains(this.originalLogEntry.logType)) {
            //log type of original entry must ALWAYS be available for selection
            final List<LogType> rLogTypes = new ArrayList<>();
            rLogTypes.add(this.originalLogEntry.logType);
            rLogTypes.addAll(logTypes);
            this.logType.setValues(rLogTypes);
        } else {
            this.logType.setValues(logTypes);
        }
    }
Checks whether there are favorite points available and sets the corresponding visibility of
"add to favorite" checkbox.
main/src/main/java/cgeo/geocaching/log/LogCacheActivity.java