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<?php /* vim: set expandtab tabstop=4 shiftwidth=4: */ // +----------------------------------------------------------------------+ // | PHP version 4.0 | // +----------------------------------------------------------------------+ // | Copyright (c) 1997-2003 The PHP Group | // +----------------------------------------------------------------------+ // | This source file is subject to version 2.0 of the PHP license, | // | that is bundled with this package in the file LICENSE, and is | // | available at through the world-wide-web at | // | http://www.php.net/license/2_02.txt. | // | If you did not receive a copy of the PHP license and are unable to | // | obtain it through the world-wide-web, please send a note to | // | license@php.net so we can mail you a copy immediately. | // +----------------------------------------------------------------------+ // | Author: Alexey Borzov <borz_off@cs.msu.su> | // +----------------------------------------------------------------------+ // // $Id$ /** * An abstract base class for QuickForm renderers * * The class implements a Visitor design pattern * * @abstract * @author Alexey Borzov <borz_off@cs.msu.su> */ class HTML_QuickForm_Renderer { /** * Constructor * * @access public */ public function __construct() { } // end constructor /** * Old syntax of class constructor. Deprecated in PHP7. * * @deprecated since Moodle 3.1 */ public function HTML_QuickForm_Renderer() { debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER); self::__construct(); } /** * Called when visiting a form, before processing any form elements * * @param object An HTML_QuickForm object being visited * @access public * @return void * @abstract */ function startForm(&$form) { return; } // end func startForm /** * Called when visiting a form, after processing all form elements * * @param object An HTML_QuickForm object being visited * @access public * @return void * @abstract */ function finishForm(&$form) { return; } // end func finishForm /** * Called when visiting a header element * * @param object An HTML_QuickForm_header element being visited * @access public * @return void * @abstract */ function renderHeader(&$header) { return; } // end func renderHeader /** * Called when visiting an element * * @param object An HTML_QuickForm_element object being visited * @param bool Whether an element is required * @param string An error message associated with an element * @access public * @return void * @abstract */ function renderElement(&$element, $required, $error) { return; } // end func renderElement /** * Called when visiting a hidden element * * @param object An HTML_QuickForm_hidden object being visited * @access public * @return void * @abstract */ function renderHidden(&$element) { return; } // end func renderHidden /** * Called when visiting a raw HTML/text pseudo-element * * Seems that this should not be used when using a template-based renderer * * @param object An HTML_QuickForm_html element being visited * @access public * @return void * @abstract */ function renderHtml(&$data) { return; } // end func renderHtml /** * Called when visiting a group, before processing any group elements * * @param object An HTML_QuickForm_group object being visited * @param bool Whether a group is required * @param string An error message associated with a group * @access public * @return void * @abstract */ function startGroup(&$group, $required, $error) { return; } // end func startGroup /** * Called when visiting a group, after processing all group elements * * @param object An HTML_QuickForm_group object being visited * @access public * @return void * @abstract */ function finishGroup(&$group) { return; } // end func finishGroup } // end class HTML_QuickForm_Renderer ?>