template.php

<?php

namespace ka\core;

use \ka\config as cfg;

/**
 * Templating class
 * 
 */
class Template
{
    /**
     * @var array Holds variables to be used inside views
     */
    protected $templateVars = array(
    'pageTitle' => '',
    'page'      => '',
    'domain'    => '',

    'header'    => '',
    'footer'    => '',
    );
    
    
    
    //protected $controller;

    /**
     * @var string View file to use
     */
    public $viewFile;

    public $viewDir;

    /**
     * @var string Default view extension
     */
    public $viewExtension = '.phtml';


    /**
     * Class constructor
     * 
     * @param string Path to views directory if other than default (set in config)
     */
    public function __construct($viewDir = null)
    {
        //$this->viewDir = $viewDir ? $viewDir : cfg\BASE_DIR . cfg\VIEWS_DIR;
        /**/
        if (!empty($viewDir)) {
            $this->viewDir = $viewDir;
        } else {
            $this->viewDir = cfg\BASE_DIR . cfg\VIEWS_DIR;
        }/**/
        
        $this->templateVars['domain'] = cfg\DOMAIN_NAME != '' ? cfg\DOMAIN_NAME : '';
    }

    /**
     * Set variables for use inside views
     */
    public function __set($name, $value)
    {
        $this->templateVars[$name] = $value;
    }

    /**
     * Provide ability to retrieve template variables
     * 
     * @return mixed
     */
    public function __get($name)
    {
        if ( array_key_exists($name, $this->templateVars) ) {
            //if ( isset($this->templateVars[$name]) ) {

            return $this->templateVars[$name];
        }

        /**/
        // If a request for a non-existent variable then throw an error
        // @TODO convert to exception?
        $trace = debug_backtrace();
        trigger_error(
        'Undefined property via __get(): ' . __CLASS__ . '::$' . $name . ' in ' . $trace[0]['file'] . ' on line ' . $trace[0]['line'],
        E_USER_NOTICE
        );
        return null;/**/
    }

    /**
     * Template render function
     * 
     * @return string
     */
    protected function render()
    {
        extract($this->templateVars);//, EXTR_REFS);

        $menu = $this->renderFile(cfg\BASE_DIR . cfg\LAYOUT_DIR . 'menu.phtml');

        $content = $this->renderFile($this->viewDir . $this->viewFile . $this->viewExtension); // @TODO FIX ME FIX ME FIX ME, FILE INCLUDE

        // Using output buffers to capture the output of the included files
        ob_start();

        if(!isset($noLayout) || $noLayout === false) {
            include cfg\BASE_DIR . cfg\LAYOUT_DIR . 'layout.phtml';
        }
        else {
            echo $content;
        }

        return ob_get_clean();
    }

    /**
     * Render a single file
     * @return string
     */
    protected function renderFile($theFile)
    {
        extract($this->templateVars);//, EXTR_REFS);
        if(isset($_POST)) { extract($_POST); }//, EXTR_REFS); 
        ob_start();
        include $theFile;
        return ob_get_clean();
    }

    public function __toString()
    {
        return $this->render();
    }
}