PersistenceService.java 文件源码

/**
 * Generates a bidirectional binding between the {@link ObservableList} and the application store
 * value identified by the {@code key} {@link String}.
 * 
 * @param observableList {@link ObservableList} to bind
 * @param key unique application store key
 */
public void bind(final ObservableList<String> observableList, String key) {
  String value = prefs.get(validateKey(key), null);
  if (value != null && value.length() > 1) {
    for (String v : value.split("\u001e")) {
      if (v != null && v.trim().length() > 0 && !observableList.contains(v.trim())) {
        observableList.add(v.trim());
      }
    }
  }
  observableList.addListener((Change<? extends CharSequence> c) -> {
    if (c.next()) {
      String joined = c.getList().stream().collect(Collectors.joining("\u001e"));
      prefs.put(key, joined);
    }
  });
}