jidaikobo-shibata/a11yc

<?php
/**
 * Kontiki\View
 *
 * @package    part of Kontiki
 * @author     Jidaikobo Inc.
 * @license    The MIT License (MIT)
 * @copyright  Jidaikobo Inc.
 * @link       http://www.jidaikobo.com
 */
namespace Kontiki;

class View
{
    public static $vals = array();
    public static $tpl_paths;

    /**
     * set template path
     *
     * @param String $tpl_path
     * @return Void
     */
    public static function forge($tpl_path)
    {
        if ( ! file_exists($tpl_path)) Util::error('template path not found: '. s($tpl_path));
        static::$tpl_paths[] = rtrim($tpl_path, '/');
    }

    /**
     * add template path
     * added template pathes is stronger than forged template path
     *
     * @param String $tpl_path
     * @return Void
     */
    public static function addTplPath($tpl_path)
    {
        if ( ! file_exists($tpl_path)) Util::error('template path not found: '. s($tpl_path));
        array_unshift(static::$tpl_paths, rtrim($tpl_path, '/'));
    }

    /**
     * tpl_path
     * specified / fallback template path
     *
     * @param String $tpl
     * @return String|Bool
     */
    public static function tplPath($tpl)
    {
        foreach (static::$tpl_paths as $tpl_path)
        {
            $path = $tpl_path.'/'.$tpl;

            if (file_exists($path))
            {
                return $path;
            }
        }

        $fallback = dirname(__DIR__).'/views/'.$tpl;
        if (file_exists($fallback))
        {
            return $fallback;
        }

        return false;
    }

    /**
     * fetch
     * fetch vals
     *
     * @return Integer|String $k
     * @return String|Bool
     */
    public static function fetch($k)
    {
        return isset(static::$vals[$k]) ? static::$vals[$k] : FALSE;
    }

    /**
     * fetchTpl
     * fetch specified / fallback template
     *
     * @param String $tpl
     * @return String
     */
    public static function fetchTpl($tpl)
    {
        $tpl_path = static::tplPath($tpl);
        if ($tpl_path === false) Util::error('template not found: '. Util::s($tpl));

        // extract
        extract (static::$vals);

        // out buffer
        ob_start();
        require($tpl_path);
        $buffer = ob_get_contents();
        ob_end_clean();
        return $buffer;
    }

    /**
     * assign
     *
     * @param String $key
     * @param String $val
     * @param Bool $escape
     * @return Void
     */
    public static function assign($key, $val, $escape = TRUE)
    {
        if (is_numeric($val) || is_bool($val))
        {
            static::$vals[$key] = $val;
            return;
        }
        static::$vals[$key] = $escape ? Util::s($val) : $val;
    }

    /**
     * display
     *
     * @param Array $tpls order of templates
     * @return Void
     */
    public static function display(array $tpls)
    {
        // extract
        extract (static::$vals);

        // render
        foreach ($tpls as $tpl)
        {
            echo static::fetchTpl($tpl);
        }
    }
}