cdc.util.prefs.defaults.EnumPreference Maven / Gradle / Ivy

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package cdc.util.prefs.defaults;

import java.util.prefs.Preferences;

import cdc.util.prefs.AbstractPreference;

/**
 * Enum preference (node, key) pair.
 *
 * @author Damien Carbonne
 * @param  The enum type.
 */
public class EnumPreference> extends AbstractPreference {
    public EnumPreference(Class valueClass,
                          Preferences node,
                          String key,
                          E def) {
        super(valueClass,
              node,
              key,
              def,
              Object::toString,
              s -> {
                  for (final E value : valueClass.getEnumConstants()) {
                      if (value.toString().equals(s)) {
                          return value;
                      }
                  }
                  return null;
              });
    }
}