<?php
/**
 * A generic controller class. You should extend this base class if you want to
 * write your own controller. You get the advantage that you can use the pre and
 * post filters.
 *
 * @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 BaseController extends BaseFrameworkSystem {
	/**
	 * Instance of a CommandResolver class
	 */
	private $resolverInstance = null;

	/**
	 * Pre filter chain instance
	 */
	private $preFilterChain = null;

	/**
	 * Post filter chain instance
	 */
	private $postFilterChain = null;

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

		// Clean up a little
		$this->removeNumberFormaters();
		$this->removeSystemArray();

		// Initialize both filter chains
		$this->preFilterChain  = ObjectFactory::createObjectByConfiguredName('filter_chain');
		$this->postFilterChain = ObjectFactory::createObjectByConfiguredName('filter_chain');
	}

	/**
	 * Getter for a command resolver instance
	 *
	 * @return	$resolverInstance	An instance of a command resolver class
	 */
	public final function getResolverInstance () {
		return $this->resolverInstance;
	}

	/**
	 * Setter for a command resolver instance
	 *
	 * @param	$resolverInstance	An instance of a command resolver class
	 * @return	void
	 */
	public final function setResolverInstance (CommandResolver $resolverInstance) {
		$this->resolverInstance = $resolverInstance;
	}

	/**
	 * Adds a filter to the pre filter chain
	 *
	 * @param	$filterInstance		An instance of a filter
	 * @return	void
	 */
	public function addPreFilter (Filterable $filterInstance) {
		// Add the pre filter
		$this->preFilterChain->addFilter($filterInstance);
	}

	/**
	 * Adds a filter to the post filter chain
	 *
	 * @param	$filterInstance		An instance of a filter
	 * @return	void
	 */
	public function addPostFilter (Filterable $filterInstance) {
		// Add the post filter
		$this->postFilterChain->addFilter($filterInstance);
	}

	/**
	 * Executes all pre filters
	 *
	 * @param	$requestInstance	An instance of a request class
	 * @param	$responseInstance	An instance of a response class
	 * @return	void
	 */
	protected function executePreFilters (Requestable $requestInstance, Responseable $responseInstance) {
		// Execute all pre filters
		$this->preFilterChain->processFilters($requestInstance, $responseInstance);
	}

	/**
	 * Executes all post filters
	 *
	 * @param	$requestInstance	An instance of a request class
	 * @param	$responseInstance	An instance of a response class
	 * @return	void
	 */
	protected function executePostFilters (Requestable $requestInstance, Responseable $responseInstance) {
		// Execute all post filters
		$this->postFilterChain->processFilters($requestInstance, $responseInstance);
	}
}

// [EOF]
?>