MenuManager.java :  » J2EE » spring-batch-2.1.0 » org » springframework » batch » admin » web » base » Java Open Source

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spring batch 2.1.0 » org » springframework » batch » admin » web » base » MenuManager.java
/*
 * Copyright 2009-2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.batch.admin.web.base;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * Aggregator for {@link Menu} contributions. Use <code>menu.values</code> to
 * get access to the contributed menu items.
 * 
 * @author Dave Syer
 * 
 */
@Component
public class MenuManager {

  @Autowired
  private Collection<Menu> values;

  public Collection<Menu> getMenus() {
    List<Menu> list = new ArrayList<Menu>(values);
    Collections.sort(list, new MenuComparator());
    return list;
  }

  private static class MenuComparator implements Comparator<Menu> {

    public int compare(Menu one, Menu two) {
      if (one.getOrder() == two.getOrder()) {
        return one.getLabel().compareTo(two.getLabel());
      }
      return one.getOrder() < two.getOrder() ? -1 : one.getOrder() > two.getOrder() ? 1 : 0;
    }

  }

}
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