import { DOMParser } from '@xmldom/xmldom';
import { Platform } from 'react-native';
import BackgroundTimer from 'react-native-background-timer';
import 'promise.allsettled/auto'; // Promise.allSettled.
import 'react-native-url-polyfill/auto'; // Complete URL polyfill.
import Storage from './Storage';
/**
* Implements an absolute minimum of the common logic of
* {@code Document.querySelector} and {@code Element.querySelector}. Implements
* the most simple of selectors necessary to satisfy the call sites at the time
* of this writing (i.e. Select by tagName).
*
* @param {Node} node - The Node which is the root of the tree to query.
* @param {string} selectors - The group of CSS selectors to match on.
* @returns {Element} - The first Element which is a descendant of the specified
* node and matches the specified group of selectors.
*/
function _querySelector(node, selectors) {
let element = null;
node && _visitNode(node, n => {
if (n.nodeType === 1 /* ELEMENT_NODE */
&& n.nodeName === selectors) {
element = n;
return true;
}
return false;
});
return element;
}
/**
* Visits each Node in the tree of a specific root Node (using depth-first
* traversal) and invokes a specific callback until the callback returns true.
*
* @param {Node} node - The root Node which represents the tree of Nodes to
* visit.
* @param {Function} callback - The callback to invoke with each visited Node.
* @returns {boolean} - True if the specified callback returned true for a Node
* (at which point the visiting stopped); otherwise, false.
*/
function _visitNode(node, callback) {
if (callback(node)) {
return true;
}
/* eslint-disable no-param-reassign, no-extra-parens */
if ((node = node.firstChild)) {
do {
if (_visitNode(node, callback)) {
return true;
}
} while ((node = node.nextSibling));
}
/* eslint-enable no-param-reassign, no-extra-parens */
return false;
}
(global => {
// DOMParser
//
// Required by:
// - lib-jitsi-meet requires this if using WebSockets
global.DOMParser = DOMParser;
// addEventListener
//
// Required by:
// - jQuery
if (typeof global.addEventListener === 'undefined') {
// eslint-disable-next-line no-empty-function
global.addEventListener = () => {};
}
// removeEventListener
//
// Required by:
// - features/base/conference/middleware
if (typeof global.removeEventListener === 'undefined') {
// eslint-disable-next-line no-empty-function
global.removeEventListener = () => {};
}
// document
//
// Required by:
// - jQuery
// - Strophe
if (typeof global.document === 'undefined') {
const document
= new DOMParser().parseFromString(
'',
'text/xml');
// document.addEventListener
//
// Required by:
// - jQuery
if (typeof document.addEventListener === 'undefined') {
// eslint-disable-next-line no-empty-function
document.addEventListener = () => {};
}
// document.cookie
//
// Required by:
// - herment
if (typeof document.cookie === 'undefined') {
document.cookie = '';
}
// document.implementation.createHTMLDocument
//
// Required by:
// - jQuery
if (typeof document.implementation.createHTMLDocument === 'undefined') {
document.implementation.createHTMLDocument = function(title = '') {
const htmlDocument
= new DOMParser().parseFromString(
`
${title}
`,
'text/xml');
Object.defineProperty(htmlDocument, 'body', {
get() {
return htmlDocument.getElementsByTagName('body')[0];
}
});
return htmlDocument;
};
}
// Element.querySelector
//
// Required by:
// - lib-jitsi-meet/modules/xmpp
const elementPrototype
= Object.getPrototypeOf(document.documentElement);
if (elementPrototype) {
if (typeof elementPrototype.querySelector === 'undefined') {
elementPrototype.querySelector = function(selectors) {
return _querySelector(this, selectors);
};
}
// Element.remove
//
// Required by:
// - lib-jitsi-meet ChatRoom#onPresence parsing
if (typeof elementPrototype.remove === 'undefined') {
elementPrototype.remove = function() {
if (this.parentNode !== null) {
this.parentNode.removeChild(this);
}
};
}
// Element.innerHTML
//
// Required by:
// - jQuery's .append method
if (!elementPrototype.hasOwnProperty('innerHTML')) {
Object.defineProperty(elementPrototype, 'innerHTML', {
get() {
return this.childNodes.toString();
},
set(innerHTML) {
// MDN says: removes all of element's children, parses
// the content string and assigns the resulting nodes as
// children of the element.
// Remove all of element's children.
this.textContent = '';
// Parse the content string.
const d
= new DOMParser().parseFromString(
`${innerHTML}
`,
'text/xml');
// Assign the resulting nodes as children of the
// element.
const documentElement = d.documentElement;
let child;
// eslint-disable-next-line no-cond-assign
while (child = documentElement.firstChild) {
this.appendChild(child);
}
}
});
}
// Element.children
//
// Required by:
// - lib-jitsi-meet ChatRoom#onPresence parsing
if (!elementPrototype.hasOwnProperty('children')) {
Object.defineProperty(elementPrototype, 'children', {
get() {
const nodes = this.childNodes;
const children = [];
let i = 0;
let node = nodes[i];
while (node) {
if (node.nodeType === 1) {
children.push(node);
}
i += 1;
node = nodes[i];
}
return children;
}
});
}
}
global.document = document;
}
// location
if (typeof global.location === 'undefined') {
global.location = {
href: '',
// Required by:
// - lib-jitsi-meet/modules/xmpp/xmpp.js
search: ''
};
}
const { navigator } = global;
if (navigator) {
// userAgent
//
// Required by:
// - lib-jitsi-meet/modules/browser/BrowserDetection.js
let userAgent = navigator.userAgent || '';
// react-native/version
const { name, version } = require('react-native/package.json');
let rn = name || 'react-native';
version && (rn += `/${version}`);
if (userAgent.indexOf(rn) === -1) {
userAgent = userAgent ? `${rn} ${userAgent}` : rn;
}
// (OS version)
const os = `(${Platform.OS} ${Platform.Version})`;
if (userAgent.indexOf(os) === -1) {
userAgent = userAgent ? `${userAgent} ${os}` : os;
}
navigator.userAgent = userAgent;
}
// WebRTC
require('./webrtc');
// Performance API
// RN only provides the now() method, since the polyfill refers the global
// performance object itself we extract it here to avoid infinite recursion.
const performanceNow = global.performance.now;
const perf = require('react-native-performance');
global.performance = perf.default;
global.performance.now = performanceNow;
global.PerformanceObserver = perf.PerformanceObserver;
// CallStats
//
// Required by:
// - lib-jitsi-meet
require('react-native-callstats/csio-polyfill');
global.callstats = require('react-native-callstats/callstats');
// XMLHttpRequest
if (global.XMLHttpRequest) {
const { prototype } = global.XMLHttpRequest;
// XMLHttpRequest.responseXML
//
// Required by:
// - Strophe
if (prototype && !prototype.hasOwnProperty('responseXML')) {
Object.defineProperty(prototype, 'responseXML', {
get() {
const { responseText } = this;
return (
responseText
&& new DOMParser().parseFromString(
responseText,
'text/xml'));
}
});
}
}
// Timers
//
// React Native's timers won't run while the app is in the background, this
// is a known limitation. Replace them with a background-friendly
// alternative.
//
// Required by:
// - lib-jitsi-meet
// - Strophe
if (Platform.OS === 'android') {
global.clearTimeout = BackgroundTimer.clearTimeout.bind(BackgroundTimer);
global.clearInterval = BackgroundTimer.clearInterval.bind(BackgroundTimer);
global.setInterval = BackgroundTimer.setInterval.bind(BackgroundTimer);
global.setTimeout = (fn, ms = 0) => BackgroundTimer.setTimeout(fn, ms);
}
// localStorage
if (typeof global.localStorage === 'undefined') {
global.localStorage = new Storage('@jitsi-meet/');
}
// sessionStorage
//
// Required by:
// - herment
// - Strophe
if (typeof global.sessionStorage === 'undefined') {
global.sessionStorage = new Storage();
}
})(global || window || this); // eslint-disable-line no-invalid-this