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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle 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.  See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
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/**
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 * Advanced checkbox type form element
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 *
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 * Contains HTML class for an advcheckbox type form element
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 *
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 * @package   core_form
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 * @copyright 2007 Jamie Pratt <me@jamiep.org>
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 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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require_once('HTML/QuickForm/advcheckbox.php');
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require_once('templatable_form_element.php');
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/**
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 * HTML class for an advcheckbox type element
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 *
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 * Overloaded {@link HTML_QuickForm_advcheckbox} with default behavior modified for Moodle.
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 * This will return '0' if not checked and '1' if checked.
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 *
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 * @package   core_form
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 * @category  form
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 * @copyright 2007 Jamie Pratt <me@jamiep.org>
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 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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class MoodleQuickForm_advcheckbox extends HTML_QuickForm_advcheckbox implements templatable {
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    use templatable_form_element {
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        export_for_template as export_for_template_base;
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    }
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    /** @var string html for help button, if empty then no help will icon will be dispalyed. */
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    var $_helpbutton='';
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    /** @var string Group to which this checkbox belongs (for select all/select none button) */
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    var $_group;
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    /**
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     * constructor
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     *
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     * @param string $elementName (optional) name of the checkbox
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     * @param string $elementLabel (optional) checkbox label
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     * @param string $text (optional) Text to put after the checkbox
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     * @param mixed $attributes (optional) Either a typical HTML attribute string
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     *              or an associative array
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     * @param mixed $values (optional) Values to pass if checked or not checked
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     */
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    public function __construct($elementName=null, $elementLabel=null, $text=null, $attributes=null, $values=null)
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    {
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        if ($values === null){
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            $values = array(0, 1);
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        }
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        if (!empty($attributes['group'])) {
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            $this->_group = 'checkboxgroup' . $attributes['group'];
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            unset($attributes['group']);
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            if (is_null($attributes)) {
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                $attributes = array();
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                $attributes['class'] .= " $this->_group";
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            } elseif (is_array($attributes)) {
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                if (isset($attributes['class'])) {
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                    $attributes['class'] .= " $this->_group";
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                } else {
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                    $attributes['class'] = $this->_group;
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                }
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            } elseif ($strpos = stripos($attributes, 'class="')) {
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                $attributes = str_ireplace('class="', 'class="' . $this->_group . ' ', $attributes);
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            } else {
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                $attributes .= ' class="' . $this->_group . '"';
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            }
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        }
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        parent::__construct($elementName, $elementLabel, $text, $attributes, $values);
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        $this->_type = 'advcheckbox';
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    }
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    /**
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     * Old syntax of class constructor. Deprecated in PHP7.
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     *
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     * @deprecated since Moodle 3.1
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     */
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    public function MoodleQuickForm_advcheckbox($elementName=null, $elementLabel=null, $text=null, $attributes=null, $values=null) {
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        debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
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        self::__construct($elementName, $elementLabel, $text, $attributes, $values);
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    }
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    /**
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     * get html for help button
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     *
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     * @return string html for help button
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     */
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    function getHelpButton(){
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        return $this->_helpbutton;
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    }
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    /**
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     * Returns HTML for advchecbox form element.
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     *
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     * @return string
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     */
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    function toHtml()
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    {
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        return '<span>' . parent::toHtml() . '</span>';
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    }
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    /**
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     * Returns the disabled field. Accessibility: the return "[ ]" from parent
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     * class is not acceptable for screenreader users, and we DO want a label.
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     *
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     * @return string
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     */
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    function getFrozenHtml()
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    {
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        //$this->_generateId();
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        $output = '<input type="checkbox" disabled="disabled" id="'.$this->getAttribute('id').'" ';
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        if ($this->getChecked()) {
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            $output .= 'checked="checked" />'.$this->_getPersistantData();
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        } else {
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            $output .= '/>';
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        }
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        return $output;
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    }
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    public function export_for_template(renderer_base $output) {
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        $context = $this->export_for_template_base($output);
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        $context['selectedvalue'] = $this->_values[1];
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        $context['deselectedvalue'] = $this->_values[0];
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        $context['frozenvalue'] = $this->getValue();
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        return $context;
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    }
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}