void (@Nullable String fileFilter) { boolean changed = !StringUtil.equals(fileFilter, this.fileFilter); if (changed) { this.fileFilter = fileFilter; notifyObservers(); if (fileFilter != null) { List<String> split = StringUtil.split(fileFilter, ","); if (ContainerUtil.exists(split, s -> s.endsWith("*.iml") || s.endsWith("*.ipr") || s.endsWith("*.iws"))) { setSearchInProjectFiles(true); } } } }