Dave Jarvis' Repositories

/*
 * Copyright (c) 2015 Karl Tauber <karl at jformdesigner dot com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  o Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 *  o Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.scrivenvar.service.impl;

import static com.scrivenvar.Constants.PREFS_ROOT;
import com.scrivenvar.service.Options;
import java.util.prefs.Preferences;
import static java.util.prefs.Preferences.userRoot;
import static com.scrivenvar.Constants.PREFS_STATE;
import static com.scrivenvar.Constants.PREFS_OPTIONS;

/**
 * Persistent options user can change at runtime.
 *
 * @author Karl Tauber and White Magic Software, Ltd.
 */
public class DefaultOptions implements Options {
  private Preferences preferences;
  
  public DefaultOptions() {
    setPreferences(getRootPreferences().node(PREFS_OPTIONS ) );
  }

  @Override
  public void put( final String key, final String value ) {
    getPreferences().put( key, value );
  }
  
  @Override
  public String get( final String key, final String defalutValue ) {
    return getPreferences().get( key, defalutValue );
  }
  
  private void setPreferences( final Preferences preferences ) {
    this.preferences = preferences;
  }

  private Preferences getRootPreferences() {
    return userRoot().node( PREFS_ROOT );
  }

  @Override
  public Preferences getState() {
    return getRootPreferences().node(PREFS_STATE );
  }

  private Preferences getPreferences() {
    return this.preferences;
  }
}