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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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* Provides the {@link core_form\util} class.
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*
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* @package core_form
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* @copyright 2019 The Open University
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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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namespace core_form;
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defined('MOODLE_INTERNAL') || die();
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/**
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* General utility class for form-related methods.
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*
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* @copyright 2019 The Open University
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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 util {
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/**
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* This function should be called if a form submit results in a file download (i.e. with the
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* Content-Disposition: attachment header) instead of navigating to a new page, before the
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* file download is sent. It will set a cookie which is used to inform page javascript in
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* submit.js.
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*
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* You may call this function in scripts which might not necessarily be called from forms; it
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* will only set the cookie if there is a POST request from a form.
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*
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* This is automatically called from various points in Moodle such as send_file_xx functions
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* in filelib.php.
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*/
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public static function form_download_complete() {
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// If this doesn't look like a Moodle QuickForms request, ignore.
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$quickform = false;
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foreach ($_POST as $name => $value) {
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if (preg_match('~^_qf__~', $name)) {
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$quickform = true;
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break;
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}
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}
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if (!$quickform) {
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return;
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}
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// Set a session cookie.
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setcookie('moodledownload_' . sesskey(), time());
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}
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}
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