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60 jpm 1 
<?php
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/*
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 * This work is hereby released into the Public Domain.
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 * To view a copy of the public domain dedication,
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 * visit http://creativecommons.org/licenses/publicdomain/ or send a letter to
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 * Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
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 *
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 */
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require_once dirname(__FILE__)."/Graph.class.php";
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/**
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 * All patterns must derivate from this class
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 *
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 * @package Artichow
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 */
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abstract class awPattern {
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	/**
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	 * Pattern arguments
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	 *
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	 * @var array
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	 */
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	protected $args = array();
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	/**
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	 * Load a pattern
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	 *
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	 * @param string $pattern Pattern name
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	 * @return Component
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	 */
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	public static function get($pattern) {
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		$file = ARTICHOW_PATTERN.DIRECTORY_SEPARATOR.$pattern.'.php';
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		if(is_file($file)) {
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			require_once $file;
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			$class = $pattern.'Pattern';
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			if(class_exists($class)) {
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				return new $class;
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			} else {
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				awImage::drawError("Class Pattern: Class '".$class."' does not exist.");
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			}
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		} else {
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			awImage::drawError("Class Pattern: Pattern '".$pattern."' does not exist.");
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		}
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	}
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	/**
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	 * Change pattern argument
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	 *
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	 * @param string $name Argument name
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	 * @param mixed $value Argument value
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	 */
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	public function setArg($name, $value) {
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		if(is_string($name)) {
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			$this->args[$name] = $value;
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		}
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	}
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	/**
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	 * Get an argument
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	 *
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	 * @param string $name
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	 * @param mixed $default Default value if the argument does not exist (default to NULL)
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	 * @return mixed Argument value
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	 */
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	protected function getArg($name, $default = NULL) {
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		if(array_key_exists($name, $this->args)) {
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			return $this->args[$name];
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		} else {
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			return $default;
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		}
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	}
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	/**
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	 * Change several arguments
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	 *
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	 * @param array $args New arguments
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	 */
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	public function setArgs($args) {
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		if(is_array($args)) {
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			foreach($args as $name => $value) {
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				$this->setArg($name, $value);
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			}
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		}
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	}
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}
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registerClass('Pattern', TRUE);
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?>