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<?php |
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/** |
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* You may not change or alter any portion of this comment or credits |
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* of supporting developers from this source code or any supporting source code |
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* which is considered copyrighted (c) material of the original comment or credit authors. |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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*/ |
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/** |
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* Factory to build handlers |
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* |
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* @category XoopsForm |
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* @package XoopsFormRenderer |
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* @author Richard Griffith <[email protected]> |
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* @copyright 2017-2020 XOOPS Project (https://xoops.org) |
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* @license GNU GPL 2.0 or later (https://www.gnu.org/licenses/gpl-2.0.html) |
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* @link https://xoops.org |
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*/ |
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final class XoopsFormRenderer |
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{ |
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const NOT_PERMITTED = 'Not supported for Singleton'; |
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/** |
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* @var XoopsFormRenderer The reference to *Singleton* instance of this class |
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*/ |
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private static $instance; |
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/** |
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* @var XoopsFormRendererInterface The reference to *Singleton* instance of this class |
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*/ |
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protected $renderer; |
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/** |
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* Returns the *Singleton* instance of this class. |
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* |
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* @return XoopsFormRenderer the singleton instance. |
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*/ |
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public static function getInstance() |
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{ |
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if (null === static::$instance) { |
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static::$instance = new static(); |
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} |
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return static::$instance; |
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} |
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/** |
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* Protected constructor to prevent creating a new instance of the |
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* *Singleton* via the `new` operator from outside of this class. |
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*/ |
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protected function __construct() |
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{ |
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} |
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/** |
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* Private clone method to prevent cloning of the instance of the |
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* *Singleton* instance. |
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* |
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* @return void |
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* |
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* @throws \LogicException |
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*/ |
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public function __clone() |
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{ |
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throw new \LogicException(static::NOT_PERMITTED); |
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} |
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/** |
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* Private unserialize method to prevent unserializing of the *Singleton* |
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* instance. |
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* |
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* @return void |
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* |
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* @throws \LogicException |
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*/ |
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public function __wakeup() |
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{ |
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throw new \LogicException(static::NOT_PERMITTED); |
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} |
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/** |
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* set the renderer |
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* |
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* @param XoopsFormRendererInterface $renderer instance of renderer |
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* |
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* @return void |
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*/ |
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public function set(XoopsFormRendererInterface $renderer) |
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{ |
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$this->renderer = $renderer; |
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} |
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/** |
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* get the renderer |
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* |
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* @return XoopsFormRendererInterface |
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*/ |
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public function get() |
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{ |
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// return a default if not set |
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if (null === $this->renderer) { |
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xoops_load('xoopsformrendererlegacy'); |
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$this->renderer = new XoopsFormRendererLegacy(); |
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} |
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return $this->renderer; |
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} |
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} |
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