<?php

/**
 * @package   	JCE
 * @copyright 	Copyright (c) 2009-2013 Ryan Demmer. All rights reserved.
 * @license   	GNU/GPL 2 or later - http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * JCE is free software. This version may have been modified pursuant
 * to the GNU General Public License, and as distributed it includes or
 * is derivative of works licensed under the GNU General Public License or
 * other free or open source software licenses.
 */
defined('_JEXEC') or die('RESTRICTED');

final class WFView extends JObject {

    private $path = array();

    public function __construct($config = array()) {

        if (!array_key_exists('base_path', $config)) {
            $config['base_path'] = WF_EDITOR_LIBRARIES;
        }

        if (!array_key_exists('layout', $config)) {
            $config['layout'] = 'default';
        }

        if (!array_key_exists('name', $config)) {
            $config['name'] = '';
        }

        $this->setProperties($config);

        if (array_key_exists('template_path', $config)) {
            $this->addTemplatePath($config['template_path']);
        } else {
            $this->addTemplatePath($this->get('base_path') . '/views/' . $this->getName() . '/tmpl');
        }
    }

    /**
     * Execute and display a template script.
     *
     * @param string $tpl The name of the template file to parse;
     * automatically searches through the template paths.
     *
     * @throws object An JError object.
     * JView::display()
     * @copyright Copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
     * @license GNU/GPL, see LICENSE.php
     */
    public function display($tpl = null) {
        $result = $this->loadTemplate($tpl);

        if (JError::isError($result)) {
            return $result;
        }

        echo $result;
    }

    /**
     * Assigns variables to the view script via differing strategies.
     * @access public
     * @return bool True on success, false on failure.
     *
     * JView::assign()
     * @copyright Copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
     * @license GNU/GPL, see LICENSE.php
     */
    public function assign() {
        $arg0 = @func_get_arg(0);
        $arg1 = @func_get_arg(1);

        if (is_object($arg0)) {
            // Assign public properties
            foreach (get_object_vars($key) as $key => $value) {
                if (substr($key, 0, 1) != '_') {
                    $this->$key = $value;
                }
            }
            return true;
        }

        if (is_array($arg0)) {
            foreach ($arg0 as $key => $value) {
                if (substr($key, 0, 1) != '_') {
                    $this->$key = $value;
                }
            }
            return true;
        }

        if (is_string($arg0) && substr($arg0, 0, 1) != '_') {
            $this->$arg0 = $arg1;
            return true;
        }

        return false;
    }

    /**
     * Assign variable for the view (by reference).
     * @access public
     *
     * @param string $key The name for the reference in the view.
     * @param mixed &$val The referenced variable.
     *
     * @return bool True on success, false on failure.
     *
     * JView::assignRef()
     * @copyright Copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
     * @license GNU/GPL, see LICENSE.php
     */
    public function assignRef($key, &$value) {
        if (is_string($key) && substr($key, 0, 1) != '_') {
            $this->$key = $value;
            return true;
        }
    }

    public function getName() {
        return $this->get('name');
    }

    public function setLayout($layout) {
        $this->set('layout', $layout);
    }

    public function getLayout() {
        return $this->get('layout');
    }

    public function addTemplatePath($path) {
        $this->path[] = $path;
    }

    public function getTemplatePath() {
        return $this->path;
    }

    /**
     * Load a template file
     *
     * @access	public
     * @param string $tpl The name of the template source file ...
     * automatically searches the template paths and compiles as needed.
     * @return string The output of the the template script.
     *
     * JView::loadTemplate()
     * @copyright Copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
     * @license GNU/GPL, see LICENSE.php
     */
    public function loadTemplate($tpl = null) {
        // clear prior output
        $output = null;
        $template = null;

        //create the template file name based on the layout
        $file = isset($tpl) ? $this->getLayout() . '_' . $tpl : $this->getLayout();

        // clean the file name
        $file = preg_replace('/[^A-Z0-9_\.-]/i', '', $file);
        $tpl = preg_replace('/[^A-Z0-9_\.-]/i', '', $tpl);

        // load the template script
        jimport('joomla.filesystem.path');

        $template = JPath::find($this->getTemplatePath(), $file . '.php');

        if ($template != false) {
            // unset so as not to introduce into template scope
            unset($tpl);
            unset($file);

            // never allow a 'this' property
            if (isset($this->this)) {
                unset($this->this);
            }

            // start capturing output into a buffer
            ob_start();
            // include the requested template filename in the local scope
            // (this will execute the view logic).
            include $template;

            // done with the requested template; get the buffer and
            // clear it.
            $output = ob_get_contents();
            ob_end_clean();

            return $output;
        } else {
            return JError::raiseError(500, 'Layout "' . $file . '" not found');
        }
    }

}