<?php

/**
 * Artificial Neural Network - Version 2.2
 *
 * For updates and changes visit the project page at http://ann.thwien.de/
 *
 *
 *
 * <b>LICENCE</b>
 *
 * The BSD 2-Clause License
 *
 * http://opensource.org/licenses/bsd-license.php
 *
 * Copyright (c) 2007 - 2012, Thomas Wien
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @author Thomas Wien <info_at_thwien_dot_de>
 * @version ANN Version 2.2 by Thomas Wien
 * @copyright Copyright (c) 2007-2012 by Thomas Wien
 * @package ANN
 */
 
namespace ANN\Controller;
 
/**
 * @package ANN
 * @access private
 */

abstract class Controller
{
	/**
	 * @var \ANN\Views\View
	 */

	protected $objViewMain;

	/**
	 * @var \ANN\Views\View
	 */

	protected $objViewContent;


	/**
	 * @var string
	 */
	 
	protected $strDirectoryTemplates;

	/**
	 * @uses Header()
	 * @uses Content()
	 * @uses Footer()
	 */

	public function __construct()
	{
	  $this->strDirectoryTemplates = __DIR__ . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR .'Templates';
	
		$this->Header();

		$this->Content();

		$this->Footer();
	}

	/**
	 * @uses \ANN\Views\View::__construct()
	 * @throws \ANN\Exception
	 */
	
	protected function Header()
	{
		header('Content-Type: text/html;charset=utf-8');
		
		$strFilename = $this->strDirectoryTemplates . DIRECTORY_SEPARATOR .'tpl.main.html';
		
		if(!is_file($strFilename))
		  throw new \ANN\Exception('File '. $strFilename .' does not exist');

		if(!is_readable($strFilename))
		  throw new \ANN\Exception('File '. $strFilename .' is not readable');

		$this->objViewMain = new \ANN\Views\View($strFilename);
	}

	abstract protected function Content();

	/**
	 * @uses \ANN\Views\View::getView()
	 * @uses \ANN\Views\View::printView()
	 */

	protected function Footer()
	{
		if($this->objViewContent instanceof \ANN\Views\View)
			$this->objViewMain->SetVar('content', $this->objViewContent->getView());
		
		$this->objViewMain->printView();
	}
}

