default.php

完美的在线教育系统

<?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          |
// | [e-mail] so we can mail you a copy immediately.               |
// +----------------------------------------------------------------------+
// | Authors: Alexey Borzov <[e-mail]>                          |
// |          Adam Daniel <[e-mail]>                        |
// |          Bertrand Mansion <[e-mail]>                     |
// +----------------------------------------------------------------------+
//
// $Id: Default.php 9612 2006-10-20 11:56:44Z bmol $

require_once('HTML/QuickForm/Renderer.php');

/**
 * A concrete renderer for HTML_QuickForm,
 * based on QuickForm 2.x built-in one
 * 
 * @access public
 */
class HTML_QuickForm_Renderer_Default extends HTML_QuickForm_Renderer
{
   /**
    * The HTML of the form  
    * @var      string
    * @access   private
    */
    var $_html;

   /**
    * Header Template string
    * @var      string
    * @access   private
    */
    var $_headerTemplate = 
        "\n\t<tr>\n\t\t<td style=\"white-space: nowrap; background-color: #CCCCCC;\" align=\"left\" valign=\"top\" colspan=\"2\"><b>{header}</b></td>\n\t</tr>";

   /**
    * Element template string
    * @var      string
    * @access   private
    */
    var $_elementTemplate = 
        "\n\t<tr>\n\t\t<td align=\"right\" valign=\"top\"><!-- BEGIN required --><span style=\"color: #ff0000\">*</span><!-- END required --><b>{label}</b></td>\n\t\t<td valign=\"top\" align=\"left\"><!-- BEGIN error --><span style=\"color: #ff0000\">{error}</span><br /><!-- END error -->\t{element}</td>\n\t</tr>";

   /**
    * Form template string
    * @var      string
    * @access   private
    */
    var $_formTemplate = 
        "\n<form{attributes}>\n<div>\n{hidden}<table border=\"0\">\n{content}\n</table>\n</div>\n</form>";

   /**
    * Required Note template string
    * @var      string
    * @access   private
    */
    var $_requiredNoteTemplate = 
        "\n\t<tr>\n\t\t<td></td>\n\t<td align=\"left\" valign=\"top\">{requiredNote}</td>\n\t</tr>";

   /**
    * Array containing the templates for customised elements
    * @var      array
    * @access   private
    */
    var $_templates = array();

   /**
    * Array containing the templates for group wraps.
    * 
    * These templates are wrapped around group elements and groups' own
    * templates wrap around them. This is set by setGroupTemplate().
    * 
    * @var      array
    * @access   private
    */
    var $_groupWraps = array();

   /**
    * Array containing the templates for elements within groups
    * @var      array
    * @access   private
    */
    var $_groupTemplates = array();

   /**
    * True if we are inside a group 
    * @var      bool
    * @access   private
    */
    var $_inGroup = false;

   /**
    * Array with HTML generated for group elements
    * @var      array
    * @access   private
    */
    var $_groupElements = array();

   /**
    * Template for an element inside a group
    * @var      string
    * @access   private
    */
    var $_groupElementTemplate = '';

   /**
    * HTML that wraps around the group elements
    * @var      string
    * @access   private
    */
    var $_groupWrap = '';

   /**
    * HTML for the current group
    * @var      string
    * @access   private
    */
    var $_groupTemplate = '';
    
   /**
    * Collected HTML of the hidden fields
    * @var      string
    * @access   private
    */
    var $_hiddenHtml = '';

   /**
    * Constructor
    *
    * @access public
    */
    function HTML_QuickForm_Renderer_Default()
    {
        $this->HTML_QuickForm_Renderer();
    } // end constructor

   /**
    * returns the HTML generated for the form
    *
    * @access public
    * @return string
    */
    function toHtml()
    {
        // _hiddenHtml is cleared in finishForm(), so this only matters when
        // finishForm() was not called (e.g. group::toHtml(), bug #3511)
        return $this->_hiddenHtml . $this->_html;
    } // end func toHtml
    
   /**
    * Called when visiting a form, before processing any form elements
    *
    * @param    object      An HTML_QuickForm object being visited
    * @access   public
    * @return   void
    */
    function startForm(&$form)
    {
        $this->_html = '';
        $this->_hiddenHtml = '';
    } // end func startForm

   /**
    * Called when visiting a form, after processing all form elements
    * Adds required note, form attributes, validation javascript and form content.
    * 
    * @param    object      An HTML_QuickForm object being visited
    * @access   public
    * @return   void
    */
    function finishForm(&$form)
    {
        // add a required note, if one is needed
        if (!empty($form->_required) && !$form->_freezeAll) {
            $this->_html .= str_replace('{requiredNote}', $form->getRequiredNote(), $this->_requiredNoteTemplate);
        }
        // add form attributes and content
        $html = str_replace('{attributes}', $form->getAttributes(true), $this->_formTemplate);
        if (strpos($this->_formTemplate, '{hidden}')) {
            $html = str_replace('{hidden}', $this->_hiddenHtml, $html);
        } else {
            $this->_html .= $this->_hiddenHtml;
        }
        $this->_hiddenHtml = '';
        $this->_html = str_replace('{content}', $this->_html, $html);
        // add a validation script
        if ('' != ($script = $form->getValidationScript())) {
            $this->_html = $script . "\n" . $this->_html;
        }
    } // end func finishForm
      
   /**
    * Called when visiting a header element
    *
    * @param    object     An HTML_QuickForm_header element being visited
    * @access   public
    * @return   void
    */
    function renderHeader(&$header)
    {
        $name = $header->getName();
        if (!empty($name) && isset($this->_templates[$name])) {
            $this->_html .= str_replace('{header}', $header->toHtml(), $this->_templates[$name]);
        } else {
            $this->_html .= str_replace('{header}', $header->toHtml(), $this->_headerTemplate);
        }
    } // end func renderHeader

   /**
    * Helper method for renderElement
    *
    * @param    string      Element name
    * @param    mixed       Element label (if using an array of labels, you should set the appropriate template)
    * @param    bool        Whether an element is required
    * @param    string      Error message associated with the element
    * @access   private
    * @see      renderElement()
    * @return   string      Html for element
    */
    function _prepareTemplate($name, $label, $required, $error)
    {
        if (is_array($label)) {
            $nameLabel = array_shift($label);
        } else {
            $nameLabel = $label;
        }