<?php
  /**
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 log4php
   */
  
  /**
   * The root logger.
   *
   * @version $Revision: 1343190 $
   * @package log4php
   * @see Logger
   */
  class LoggerRoot extends Logger {
  	/**
  	 * Constructor
  	 *
  	 * @param integer $level initial log level
  	 */
  	public function __construct(LoggerLevel $level = null) {
  		parent::__construct('root');
  
  		if($level == null) {
  			$level = LoggerLevel::getLevelAll();
  		}
  		$this->setLevel($level);
  	} 
  	
  	/**
  	 * @return LoggerLevel the level
  	 */
  	public function getEffectiveLevel() {
  		return $this->getLevel();
  	}
  	
  	/**
  	 * Override level setter to prevent setting the root logger's level to 
  	 * null. Root logger must always have a level.
  	 * 
  	 * @param LoggerLevel $level
  	 */
  	public function setLevel(LoggerLevel $level = null) {
  		if (isset($level)) {
  			parent::setLevel($level);
  		} else {
  			trigger_error("log4php: Cannot set LoggerRoot level to null.", E_USER_WARNING);
  		}
  	}
  	
  	/**
  	 * Override parent setter. Root logger cannot have a parent.
  	 * @param Logger $parent
  	 */
  	public function setParent(Logger $parent) {
  		trigger_error("log4php: LoggerRoot cannot have a parent.", E_USER_WARNING);
  	}
  }