<?php

class View
{
    private $viewfile = 'default_view.php';
    private $properties = array();

    // factory method (chainable)
    public static function factory($viewfile = '')
    {
        return new self($viewfile);
    }

    // constructor
    public function __construct($viewfile = '')
    {
    	if ($viewfile !== '')
    	{
    		$viewfile = $viewfile . '.php';
    		if (file_exists($viewfile))
	        {
	           $this->viewfile = $viewfile;
	        }
    	}
    }
    
    // set undeclared view property
    public function __set($property, $value)
    {
        if (!isset($this->$property))
        {
            $this->properties[$property] = $value;
        }
    }

    // get undeclared view property
    public function __get($property)
    {
        if (isset($this->properties[$property]))
        {
            return $this->properties[$property];
        }
    }

    // parse view properties and return output
    public function display()
    {
        extract($this->properties);
        ob_start();
        include($this->viewfile);
        return ob_get_clean();
    }
}// End View class