Proyectos de Subversion Moodle

<?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.               |

// +----------------------------------------------------------------------+

// | Authors: Alexey Borzov <borz_off@cs.msu.su>                          |

// |          Adam Daniel <adaniel1@eesus.jnj.com>                        |

// |          Bertrand Mansion <bmansion@mamasam.com>                     |

// +----------------------------------------------------------------------+

//

// $Id$

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

    */

    public function __construct() {

        parent::__construct();

    } // end constructor

    /**

     * Old syntax of class constructor. Deprecated in PHP7.

     *

     * @deprecated since Moodle 3.1

     */

    public function HTML_QuickForm_Renderer_Default() {

        debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);

        self::__construct();

    } // 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;

        }

        if (isset($this->_templates[$name])) {

            $html = str_replace('{label}', $nameLabel, $this->_templates[$name]);

        } else {

            $html = str_replace('{label}', $nameLabel, $this->_elementTemplate);

        }

        if ($required) {

            $html = str_replace('<!-- BEGIN required -->', '', $html);

            $html = str_replace('<!-- END required -->', '', $html);

        } else {

            $html = preg_replace("/([ \t\n\r]*)?<!-- BEGIN required -->(\s|\S)*<!-- END required -->([ \t\n\r]*)?/iU", '', $html);

        }

        if (isset($error)) {

            $html = str_replace('{error}', $error, $html);

            $html = str_replace('<!-- BEGIN error -->', '', $html);

            $html = str_replace('<!-- END error -->', '', $html);

        } else {

            $html = preg_replace("/([ \t\n\r]*)?<!-- BEGIN error -->(\s|\S)*<!-- END error -->([ \t\n\r]*)?/iU", '', $html);

        }

        if (is_array($label)) {

            foreach($label as $key => $text) {

                $key  = is_int($key)? $key + 2: $key;

                $html = str_replace("{label_{$key}}", $text, $html);

                $html = str_replace("<!-- BEGIN label_{$key} -->", '', $html);

                $html = str_replace("<!-- END label_{$key} -->", '', $html);

            }

        }

        if (strpos($html, '{label_')) {

            $html = preg_replace('/\s*<!-- BEGIN label_(\S+) -->.*<!-- END label_\1 -->\s*/i', '', $html);

        }

        return $html;

    } // end func _prepareTemplate

   /**

    * Renders an element Html

    * 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

    */

    function renderElement(&$element, $required, $error)

    {

        if (!$this->_inGroup) {

            $html = $this->_prepareTemplate($element->getName(), $element->getLabel(), $required, $error);

            $this->_html .= str_replace('{element}', $element->toHtml(), $html);

        } elseif (!empty($this->_groupElementTemplate)) {

            $html = str_replace('{label}', $element->getLabel(), $this->_groupElementTemplate);

            if ($required) {

                $html = str_replace('<!-- BEGIN required -->', '', $html);

                $html = str_replace('<!-- END required -->', '', $html);

            } else {

                $html = preg_replace("/([ \t\n\r]*)?<!-- BEGIN required -->(\s|\S)*<!-- END required -->([ \t\n\r]*)?/iU", '', $html);

            }

            $this->_groupElements[] = str_replace('{element}', $element->toHtml(), $html);

        } else {

            $this->_groupElements[] = $element->toHtml();

        }

    } // end func renderElement

   /**

    * Renders an hidden element

    * Called when visiting a hidden element

    *

    * @param object     An HTML_QuickForm_hidden object being visited

    * @access public

    * @return void

    */

    function renderHidden(&$element)

    {

        $this->_hiddenHtml .= $element->toHtml() . "\n";

    } // end func renderHidden

   /**

    * Called when visiting a raw HTML/text pseudo-element

    *

    * @param  object     An HTML_QuickForm_html element being visited

    * @access public

    * @return void

    */

    function renderHtml(&$data)

    {

        $this->_html .= $data->toHtml();

    } // 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

    */

    function startGroup(&$group, $required, $error)

    {

        $name = $group->getName();

        $this->_groupTemplate        = $this->_prepareTemplate($name, $group->getLabel(), $required, $error);

        $this->_groupElementTemplate = empty($this->_groupTemplates[$name])? '': $this->_groupTemplates[$name];

        $this->_groupWrap            = empty($this->_groupWraps[$name])? '': $this->_groupWraps[$name];

        $this->_groupElements        = array();

        $this->_inGroup              = true;

    } // 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

    */

    function finishGroup(&$group)

    {

        $separator = $group->_separator;

        if (is_array($separator)) {

            $count = count($separator);

            $html  = '';

            for ($i = 0; $i < count($this->_groupElements); $i++) {

                $html .= (0 == $i? '': $separator[($i - 1) % $count]) . $this->_groupElements[$i];

            }

        } else {

            if (is_null($separator)) {

                $separator = ' ';

            }

            $html = implode((string)$separator, $this->_groupElements);

        }

        if (!empty($this->_groupWrap)) {

            $html = str_replace('{content}', $html, $this->_groupWrap);

        }

        $this->_html   .= str_replace('{element}', $html, $this->_groupTemplate);

        $this->_inGroup = false;

    } // end func finishGroup

    /**

     * Sets element template

     *

     * @param       string      The HTML surrounding an element

     * @param       string      (optional) Name of the element to apply template for

     * @access      public

     * @return      void

     */

    function setElementTemplate($html, $element = null)

    {

        if (is_null($element)) {

            $this->_elementTemplate = $html;

        } else {

            $this->_templates[$element] = $html;

        }

    } // end func setElementTemplate

    /**

     * Sets template for a group wrapper

     *

     * This template is contained within a group-as-element template

     * set via setTemplate() and contains group's element templates, set

     * via setGroupElementTemplate()

     *

     * @param       string      The HTML surrounding group elements

     * @param       string      Name of the group to apply template for

     * @access      public

     * @return      void

     */

    function setGroupTemplate($html, $group)

    {

        $this->_groupWraps[$group] = $html;

    } // end func setGroupTemplate

    /**

     * Sets element template for elements within a group

     *

     * @param       string      The HTML surrounding an element

     * @param       string      Name of the group to apply template for

     * @access      public

     * @return      void

     */

    function setGroupElementTemplate($html, $group)

    {

        $this->_groupTemplates[$group] = $html;

    } // end func setGroupElementTemplate

    /**

     * Sets header template

     *

     * @param       string      The HTML surrounding the header

     * @access      public

     * @return      void

     */

    function setHeaderTemplate($html)

    {

        $this->_headerTemplate = $html;

    } // end func setHeaderTemplate

    /**

     * Sets form template

     *

     * @param     string    The HTML surrounding the form tags

     * @access    public

     * @return    void

     */

    function setFormTemplate($html)

    {

        $this->_formTemplate = $html;

    } // end func setFormTemplate

    /**

     * Sets the note indicating required fields template

     *

     * @param       string      The HTML surrounding the required note

     * @access      public

     * @return      void

     */

    function setRequiredNoteTemplate($html)

    {

        $this->_requiredNoteTemplate = $html;

    } // end func setRequiredNoteTemplate

    /**

     * Clears all the HTML out of the templates that surround notes, elements, etc.

     * Useful when you want to use addData() to create a completely custom form look

     *

     * @access  public

     * @return  void

     */

    function clearAllTemplates()

    {

        $this->setElementTemplate('{element}');

        $this->setFormTemplate("\n\t<form{attributes}>{content}\n\t</form>\n");

        $this->setRequiredNoteTemplate('');

        $this->_templates = array();

    } // end func clearAllTemplates

} // end class HTML_QuickForm_Renderer_Default

?>