/*
    *  Copyright 2013 Chris Pheby
    *
    *  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.jadira.scanner.classpath.filter;
  
  import java.util.Collection;
  import java.util.HashSet;
  import java.util.Set;
  
  import org.jadira.scanner.classpath.types.JClass;
  import org.jadira.scanner.classpath.types.JInterface;
  import org.jadira.scanner.core.filter.AbstractFilter;
  
  public class JClassImplementsFilter extends AbstractFilter<JClass> {
  
  	private Set<Class<?>> types = new HashSet<Class<?>>();
  	
  	public JClassImplementsFilter() {
  	}
  	
  	public JClassImplementsFilter(Class<?> type) {
  		if (type != null) {
  			types.add(type);
  		}
  	}
  	
  	public JClassImplementsFilter(Collection<Class<?>> types) {
  		for (Class<?> next : types) {
  			types.add(next);
  		}
  	}
  	
  	@Override
  	public boolean accept(JClass clazz) {
  		
  	    while (true) {
  	        JClass superType = clazz.getSuperType();
  	        if (superType == null) {
  	            return false;
  	        }
  	        for (JInterface iface : superType.getImplementedInterfaces()) {
      	        if (types.contains(iface.getActualClass())) {
      	            return true;
      	        } 
  	        }
  	    }
  	}
  }