<?php
/**
 * A news factory for web pages
 *
 * @author		Roland Haeder <webmaster@ship-simu.org>
 * @version		0.0.0
 * @copyright	Copyright(c) 2007, 2008 Roland Haeder, this is free software
 * @license		GNU GPL 3.0 or any newer version
 * @link		http://www.ship-simu.org
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
class WebNewsFactory extends BaseFactory {
	/**
	 * Instance of a request class
	 */
	private $requestInstance = null;

	/**
	 * Protected constructor
	 *
	 * @return	void
	 */
	protected function __construct () {
		// Call parent constructor
		parent::__construct(__CLASS__);

		// Set part description
		$this->setObjectDescription("Factory for webpages with news");
	}

	/**
	 * Singleton getter for a special factory instance depending on the given
	 * request
	 *
	 * @param	$requestInstance	An instance of a request class
	 * @return	$factoryInstance	An instance of a WebNewsFactory class
	 */
	public final static function createFactoryByRequest (Requestable $requestInstance) {
		// Generate the new instance
		$factoryInstance = new WebNewsFactory();

		// Get the element name from configuration
		$element = FrameworkConfiguration::getInstance()->readConfig('app_selector_get');

		// Analyze the request, first get the Uni* application name (short one from URL)
		$appName = $requestInstance->getRequestElement($element);

		// Initialize some variables
		$className = "";
		$className2 = $appName;

		// Then construct the class name
		foreach (array("_", "-") as $exp) {
			$array = explode($exp, $className2);
			foreach ($array as $el) {
				$className .= ucfirst(strtolower($el));
			}

			// Copy it back and clear the class name
			$className2 = $className;
			$className = "";
		}

		// After all is done, copy it back and add this class' name
		$className = $className2 . $factoryInstance->__toString();

		// Once we have that name, try to load initialize it
		$realFactoryInstance = ObjectFactory::createObjectByName($className);

		// And assign it with the factory
		$factoryInstance->setRealFactoryInstance($realFactoryInstance);

		// Remember the request we have used for later usage
		$factoryInstance->setRequestInstance($requestInstance);

		// Return the prepared factory instance
		return $factoryInstance;
	}

	/**
	 * Setter for the request instance
	 *
	 * @param	$requestInstance	An instance of a request object
	 * @return	void
	 */
	public final function setRequestInstance (Requestable $requestInstance) {
		$this->requestInstance = $requestInstance;
	}

	/**
	 * Creates a new object instance and returns it
	 *
	 * @return	$newsInstance	An instance of a news object
	 */
	public function createNewsObject () {
		// Ask the real factory class for doing this
		$newsInstance = $this->getRealFactoryInstance()->createNewObject($this->requestInstance);

		// And return it
		return $newsInstance;
	}
}

// [EOF]
?>