content: /*
   * Created on Oct 22, 2007
   * 
   * 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.
   * 
   * Copyright @2007-2013 the original author or authors.
   */
  package org.fest.swing.hierarchy;
  
  import static org.fest.util.Lists.emptyList;
  import static org.fest.util.Lists.newArrayList;
  
  import java.awt.Component;
  import java.awt.Container;
  import java.util.Collection;
  
  import javax.annotation.Nonnull;
  import javax.swing.JMenu;
  
  import org.fest.swing.annotation.RunsInCurrentThread;
  
  /**
   * <p>
   * Find children {@code Component}s in a {@code JMenu}.
   * </p>
   * 
   * <p>
   * <b>Note:</b> Methods in this class are accessed in the current executing thread. Such thread may or may not be the
   * event dispatch thread (EDT.) Client code must call methods in this class from the EDT.
   * </p>
   * 
   * @author Yvonne Wang
   */
  final class JMenuChildrenFinder implements ChildrenFinderStrategy {
    @RunsInCurrentThread
    @Override
    public @Nonnull Collection<Component> nonExplicitChildrenOf(@Nonnull Container c) {
      if (!(c instanceof JMenu)) {
        return emptyList();
      }
      return newArrayList((Component) ((JMenu) c).getPopupMenu());
    }
  }
  