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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Library functions to facilitate the use of JavaScript in Moodle.
*
* @copyright 2016 Adrian Greeve <adrian@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @package core
* @category output
*/
defined('MOODLE_INTERNAL') || die();
/**
* This requirements manager captures the appropriate html for creating a fragment to
* be inserted elsewhere.
*
* @copyright 2016 Adrian Greeve <adrian@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 3.1
* @package core
* @category output
*/
class fragment_requirements_manager extends page_requirements_manager {
/**
* Page fragment constructor.
*/
public function __construct() {
parent::__construct();
// As this is a fragment the header should already be done.
$this->headdone = true;
}
/**
* Returns js code to load amd module loader, then insert inline script tags
* that contain require() calls using RequireJS.
*
* @return string
*/
protected function get_amd_footercode() {
global $CFG;
$output = '';
// First include must be to a module with no dependencies, this prevents multiple requests.
$prefix = 'M.util.js_pending("core/first");';
$prefix .= "require(['core/first'], function() {\n";
$suffix = "\n});";
$suffix .= 'M.util.js_complete("core/first");';
$output .= html_writer::script($prefix . implode(";\n", $this->amdjscode) . $suffix);
return $output;
}
/**
* Generate any HTML that needs to go at the end of the page.
*
* @return string the HTML code to to at the end of the page.
*/
public function get_end_code() {
global $CFG;
$output = '';
// Call amd init functions.
$output .= $this->get_amd_footercode();
// Add other requested modules.
$output .= $this->get_extra_modules_code();
// All the other linked scripts - there should be as few as possible.
if ($this->jsincludes['footer']) {
foreach ($this->jsincludes['footer'] as $url) {
$output .= html_writer::script('', $url);
}
}
if (!empty($this->stringsforjs)) {
// Add all needed strings.
$strings = array();
foreach ($this->stringsforjs as $component => $v) {
foreach ($v as $indentifier => $langstring) {
$strings[$component][$indentifier] = $langstring->out();
}
}
// Append don't overwrite.
$output .= html_writer::script('require(["jquery"], function($) {
M.str = $.extend(true, M.str, ' . json_encode($strings) . ');
});');
}
// Add variables.
if ($this->jsinitvariables['footer']) {
$js = '';
foreach ($this->jsinitvariables['footer'] as $data) {
list($var, $value) = $data;
$js .= js_writer::set_variable($var, $value, true);
}
$output .= html_writer::script($js);
}
$inyuijs = $this->get_javascript_code(false);
$ondomreadyjs = $this->get_javascript_code(true);
// See if this is still needed when we get to the ajax page.
$jsinit = $this->get_javascript_init_code();
$handlersjs = $this->get_event_handler_code();
// There is a global Y, make sure it is available in your scope.
$js = "(function() {{$inyuijs}{$ondomreadyjs}{$jsinit}{$handlersjs}})();";
$output .= html_writer::script($js);
return $output;
}
}