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83 lines
2.8 KiB
PHP
83 lines
2.8 KiB
PHP
<?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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* Library functions to facilitate the use of ajax JavaScript in Moodle.
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*
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* @package core
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* @copyright 2009 Tim Hunt
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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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/**
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* You need to call this function if you wish to use the set_user_preference method in javascript_static.php, to white-list the
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* preference you want to update from JavaScript, and to specify the type of cleaning you expect to be done on values.
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*
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* @package core
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* @category preference
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* @param string $name the name of the user_perference we should allow to be updated by remote calls.
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* @param integer $paramtype one of the PARAM_{TYPE} constants, user to clean submitted values before set_user_preference is called.
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* @return null
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*/
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function user_preference_allow_ajax_update($name, $paramtype) {
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global $USER, $PAGE;
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// Record in the session that this user_preference is allowed to updated remotely.
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$USER->ajax_updatable_user_prefs[$name] = $paramtype;
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}
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/**
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* Returns whether ajax is enabled/allowed or not.
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* @param array $browsers optional list of alowed browsers, empty means use default list
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* @return bool
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*/
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function ajaxenabled(array $browsers = null) {
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global $CFG;
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if (!empty($browsers)) {
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$valid = false;
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foreach ($browsers as $brand => $version) {
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if (check_browser_version($brand, $version)) {
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$valid = true;
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}
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}
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if (!$valid) {
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return false;
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}
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}
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$ie = check_browser_version('MSIE', 6.0);
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$ff = check_browser_version('Gecko', 20051106);
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$op = check_browser_version('Opera', 9.0);
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$sa = check_browser_version('Safari', 412);
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$ch = check_browser_version('Chrome', 6);
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if (!$ie && !$ff && !$op && !$sa && !$ch) {
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/** @see http://en.wikipedia.org/wiki/User_agent */
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// Gecko build 20051107 is what is in Firefox 1.5.
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// We still have issues with AJAX in other browsers.
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return false;
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}
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if (!empty($CFG->enableajax)) {
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return true;
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} else {
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return false;
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}
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}
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