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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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 * Button form element
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 *
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 * Contains HTML class for a button type 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/button.php");
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require_once(__DIR__ . '/../outputcomponents.php');
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require_once('templatable_form_element.php');
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/**
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 * HTML class for a button type element
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 *
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 * Overloaded {@link HTML_QuickForm_button} to add help button
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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_button extends HTML_QuickForm_button implements templatable
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{
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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 */
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    var $_helpbutton='';
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    /** @var bool if true label will be hidden. */
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    protected $_hiddenLabel = false;
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    /**
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     * Any class apart from 'btn' would be overridden with this content.
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     *
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     * By default, buttons will utilize the btn-secondary class. However, there are cases where we
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     * require a button with different stylings (e.g. btn-primary). In these cases, $customclassoverride will override
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     * the defaults mentioned previously and utilize the provided class(es).
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     *
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     * @var null|string $customclassoverride Custom class override for the input element
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     */
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    protected $customclassoverride;
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    /**
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     * constructor
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     *
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     * @param string $elementName (optional) name for the button
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     * @param string $value (optional) value for the button
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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 array $options Options to further customise the button. Currently accepted options are:
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     *                  customclassoverride String The CSS class to use for the button instead of the standard
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     *                                             btn-primary and btn-secondary classes.
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     */
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    public function __construct($elementName=null, $value=null, $attributes=null, $options = []) {
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        parent::__construct($elementName, $value, $attributes);
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        $this->customclassoverride = $options['customclassoverride'] ?? null;
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    }
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    /**
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     * Old syntax of class constructor. Deprecated in PHP7.
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     *
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     * @deprecated since Moodle 3.1
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     */
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    public function MoodleQuickForm_button($elementName=null, $value=null, $attributes=null) {
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        debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
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        self::__construct($elementName, $value, $attributes);
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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 $this->_helpbutton;
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    }
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    /**
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     * Slightly different container template when frozen.
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     *
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     * @return string
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     */
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    function getElementTemplateType(){
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        if ($this->_flagFrozen){
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            return 'nodisplay';
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        } else {
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            return 'default';
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        }
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    }
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    /**
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     * Sets label to be hidden
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     *
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     * @param bool $hiddenLabel sets if label should be hidden
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     */
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    public function setHiddenLabel($hiddenLabel) {
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        $this->_hiddenLabel = $hiddenLabel;
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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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        if ($this->customclassoverride) {
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            $context['customclassoverride'] = $this->customclassoverride;
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        }
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        return $context;
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    }
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}