/**
    * Copyright 2010-2014 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.common.util.log.log4j.model;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import javax.xml.bind.annotation.XmlAttribute;
  import javax.xml.bind.annotation.XmlElement;
  
  import org.kuali.common.util.Assert;
  import org.kuali.common.util.CollectionUtils;
  import org.kuali.common.util.nullify.Null;
  
  public final class Layout {
  
  	public static final Layout NONE = new Layout();
  
  	@XmlAttribute(name = "class")
  	private final Class<?> layoutClass;
  
  	@XmlElement(name = "param")
  	private final List<Param> params;
  
  	private Layout() {
  		this(Null.class, Param.EMPTY);
  	}
  
  	public Layout(Class<?> layoutClass, Param param) {
  		this(layoutClass, CollectionUtils.singletonList(param));
  	}
  
  	public Layout(Class<?> layoutClass, List<Param> params) {
  		Assert.noNulls(layoutClass, params);
  		this.layoutClass = layoutClass;
  		this.params = new ArrayList<Param>(params);
  	}
  
  	public List<Param> getParams() {
  		return Collections.unmodifiableList(params);
  	}
  
  	public Class<?> getLayoutClass() {
  		return layoutClass;
  	}
  
  }