mirror of
https://github.com/jech/galene.git
synced 2024-11-10 02:35:58 +01:00
1634 lines
42 KiB
JavaScript
1634 lines
42 KiB
JavaScript
// Copyright (c) 2020 by Juliusz Chroboczek.
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// This is not open source software. Copy it, and I'll break into your
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// house and tell your three year-old that Santa doesn't exist.
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'use strict';
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/** @type {string} */
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let group;
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/** @type {ServerConnection} */
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let serverConnection;
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/**
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* @typedef {Object} userpass
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* @property {string} username
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* @property {string} password
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*/
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/* Some browsers disable session storage when cookies are disabled,
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we fall back to a global variable. */
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/**
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* @type {userpass}
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*/
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let fallbackUserPass = null;
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/**
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* @param {string} username
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* @param {string} password
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*/
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function storeUserPass(username, password) {
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let userpass = {username: username, password: password};
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try {
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window.sessionStorage.setItem('userpass', JSON.stringify(userpass));
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fallbackUserPass = null;
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} catch(e) {
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console.warn("Couldn't store password:", e);
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fallbackUserPass = userpass;
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}
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}
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/**
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* Returns null if the user hasn't logged in yet.
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*
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* @returns {userpass}
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*/
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function getUserPass() {
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/** @type{userpass} */
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let userpass;
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try {
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let json = window.sessionStorage.getItem('userpass');
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userpass = JSON.parse(json);
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} catch(e) {
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console.warn("Couldn't retrieve password:", e);
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userpass = fallbackUserPass;
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}
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return userpass || null;
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}
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/**
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* Return null if the user hasn't logged in yet.
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*
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* @returns {string}
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*/
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function getUsername() {
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let userpass = getUserPass();
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if(!userpass)
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return null;
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return userpass.username;
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}
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/**
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* @typedef {Object} settings
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* @property {boolean} [localMute]
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* @property {string} [video]
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* @property {string} [audio]
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* @property {string} [send]
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* @property {string} [request]
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* @property {boolean} [activityDetection]
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* @property {boolean} [blackboardMode]
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* @property {boolean} [studioMode]
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*/
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/** @type{settings} */
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let fallbackSettings = null;
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/**
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* @param {settings} settings
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*/
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function storeSettings(settings) {
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try {
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window.sessionStorage.setItem('settings', JSON.stringify(settings));
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fallbackSettings = null;
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} catch(e) {
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console.warn("Couldn't store password:", e);
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fallbackSettings = settings;
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}
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}
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/**
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* This always returns a dictionary.
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*
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* @returns {settings}
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*/
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function getSettings() {
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/** @type {settings} */
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let settings;
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try {
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let json = window.sessionStorage.getItem('settings');
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settings = JSON.parse(json);
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} catch(e) {
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console.warn("Couldn't retrieve password:", e);
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settings = fallbackSettings;
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}
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return settings || {};
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}
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/**
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* @param {settings} settings
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*/
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function updateSettings(settings) {
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let s = getSettings();
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for(let key in settings)
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s[key] = settings[key];
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storeSettings(s);
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}
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/**
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* @param {string} id
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*/
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function getSelectElement(id) {
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let elt = document.getElementById(id);
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if(!elt || !(elt instanceof HTMLSelectElement))
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throw new Error(`Couldn't find ${id}`);
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return elt;
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}
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/**
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* @param {string} id
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*/
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function getInputElement(id) {
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let elt = document.getElementById(id);
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if(!elt || !(elt instanceof HTMLInputElement))
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throw new Error(`Couldn't find ${id}`);
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return elt;
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}
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/**
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* @param {string} id
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*/
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function getButtonElement(id) {
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let elt = document.getElementById(id);
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if(!elt || !(elt instanceof HTMLButtonElement))
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throw new Error(`Couldn't find ${id}`);
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return elt;
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}
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function reflectSettings() {
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let settings = getSettings();
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let store = false;
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setLocalMute(settings.localMute);
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let videoselect = getSelectElement('videoselect');
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if(!settings.video || !selectOptionAvailable(videoselect, settings.video)) {
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settings.video = selectOptionDefault(videoselect);
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store = true;
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}
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videoselect.value = settings.video;
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let audioselect = getSelectElement('audioselect');
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if(!settings.audio || !selectOptionAvailable(audioselect, settings.audio)) {
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settings.audio = selectOptionDefault(audioselect);
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store = true;
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}
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audioselect.value = settings.audio;
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if(settings.request)
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getSelectElement('requestselect').value = settings.request;
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else {
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settings.request = getSelectElement('requestselect').value;
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store = true;
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}
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if(settings.send)
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getSelectElement('sendselect').value = settings.send;
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else {
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settings.send = getSelectElement('sendselect').value;
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store = true;
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}
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getInputElement('activitybox').checked = settings.activityDetection;
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getInputElement('blackboardbox').checked = settings.blackboardMode;
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getInputElement('studiobox').checked = settings.studioMode;
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if(store)
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storeSettings(settings);
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}
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function showVideo() {
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let width = window.innerWidth;
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let video_container = document.getElementById('video-container');
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video_container.classList.remove('no-video');
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if (width <= 768)
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document.getElementById('collapse-video').style.display = "block";
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}
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/**
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* @param {boolean} [force]
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*/
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function hideVideo(force) {
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let mediadiv = document.getElementById('peers');
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if(mediadiv.childElementCount > 0 && !force)
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return;
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let video_container = document.getElementById('video-container');
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video_container.classList.add('no-video');
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}
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function closeVideoControls() {
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// hide all video buttons used to switch video on mobile layout
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document.getElementById('switch-video').style.display = "";
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document.getElementById('collapse-video').style.display = "";
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}
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/**
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* @param{boolean} connected
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*/
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function setConnected(connected) {
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let statspan = document.getElementById('statspan');
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let userbox = document.getElementById('user');
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let connectionbox = document.getElementById('login-container');
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if(connected) {
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resetUsers();
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clearChat();
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statspan.textContent = 'Connected';
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statspan.classList.remove('disconnected');
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statspan.classList.add('connected');
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userbox.classList.remove('invisible');
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connectionbox.classList.add('invisible');
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displayUsername();
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} else {
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resetUsers();
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let userpass = getUserPass();
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getInputElement('username').value =
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userpass ? userpass.username : '';
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getInputElement('password').value =
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userpass ? userpass.password : '';
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statspan.textContent = 'Disconnected';
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statspan.classList.remove('connected');
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statspan.classList.add('disconnected');
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userbox.classList.add('invisible');
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connectionbox.classList.remove('invisible');
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clearUsername();
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displayError("Disconnected!", "error");
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hideVideo();
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closeVideoControls();
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}
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}
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/** @this {ServerConnection} */
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function gotConnected() {
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setConnected(true);
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let up = getUserPass();
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this.login(up.username, up.password);
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this.join(group);
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this.request(getSettings().request);
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}
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/**
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* @this {ServerConnection}
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* @param {number} code
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* @param {string} reason
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*/
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function gotClose(code, reason) {
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delUpMediaKind(null);
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setConnected(false);
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if(code != 1000) {
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console.warn('Socket close', code, reason);
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}
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}
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/**
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* @this {ServerConnection}
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* @param {Stream} c
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*/
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function gotDownStream(c) {
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c.onclose = function() {
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delMedia(c.id);
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};
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c.onerror = function(e) {
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console.error(e);
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displayError(e);
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}
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c.ondowntrack = function(track, transceiver, label, stream) {
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setMedia(c, false);
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}
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c.onlabel = function(label) {
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setLabel(c);
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}
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c.onstatus = function(status) {
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setMediaStatus(c);
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}
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c.onstats = gotDownStats;
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if(getSettings().activityDetection)
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c.setStatsInterval(activityDetectionInterval);
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}
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// Store current browser viewport height in css variable
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function setViewportHeight() {
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document.documentElement.style.setProperty(
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'--vh', `${window.innerHeight/100}px`,
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);
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};
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setViewportHeight();
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// On resize and orientation change, we update viewport height
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addEventListener('resize', setViewportHeight);
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addEventListener('orientationchange', setViewportHeight);
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getButtonElement('presentbutton').onclick = function(e) {
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e.preventDefault();
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addLocalMedia();
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};
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getButtonElement('unpresentbutton').onclick = function(e) {
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e.preventDefault();
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delUpMediaKind('local');
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resizePeers();
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};
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function changePresentation() {
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let id = findUpMedia('local');
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if(id) {
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addLocalMedia(id);
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}
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}
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/**
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* @param {string} id
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* @param {boolean} visible
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*/
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function setVisibility(id, visible) {
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let elt = document.getElementById(id);
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if(visible)
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elt.classList.remove('invisible');
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else
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elt.classList.add('invisible');
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}
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function setButtonsVisibility() {
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let permissions = serverConnection.permissions;
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let local = !!findUpMedia('local');
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let share = !!findUpMedia('screenshare')
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// don't allow multiple presentations
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setVisibility('presentbutton', permissions.present && !local);
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setVisibility('unpresentbutton', local);
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// allow multiple shared documents
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setVisibility('sharebutton', permissions.present);
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setVisibility('unsharebutton', share);
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setVisibility('mediaoptions', permissions.present);
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}
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/**
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* @param {boolean} mute
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*/
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function setLocalMute(mute) {
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muteLocalTracks(mute);
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let button = document.getElementById('mutebutton');
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let icon = button.querySelector("span .fa");
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if(mute){
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icon.classList.add('fa-microphone-slash');
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icon.classList.remove('fa-microphone');
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button.classList.add('muted');
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} else {
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icon.classList.remove('fa-microphone-slash');
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icon.classList.add('fa-microphone');
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button.classList.remove('muted');
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}
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}
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getSelectElement('videoselect').onchange = function(e) {
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e.preventDefault();
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if(!(this instanceof HTMLSelectElement))
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throw new Error('Unexpected type for this');
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updateSettings({video: this.value});
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changePresentation();
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};
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getSelectElement('audioselect').onchange = function(e) {
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e.preventDefault();
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if(!(this instanceof HTMLSelectElement))
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throw new Error('Unexpected type for this');
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updateSettings({audio: this.value});
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changePresentation();
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};
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getInputElement('blackboardbox').onchange = function(e) {
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e.preventDefault();
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if(!(this instanceof HTMLInputElement))
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throw new Error('Unexpected type for this');
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updateSettings({blackboardMode: this.checked});
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changePresentation();
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}
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getInputElement('studiobox').onchange = function(e) {
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e.preventDefault();
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if(!(this instanceof HTMLInputElement))
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throw new Error('Unexpected type for this');
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updateSettings({studioMode: this.checked});
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changePresentation();
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}
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document.getElementById('mutebutton').onclick = function(e) {
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e.preventDefault();
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let localMute = getSettings().localMute;
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localMute = !localMute;
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updateSettings({localMute: localMute})
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setLocalMute(localMute);
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}
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document.getElementById('sharebutton').onclick = function(e) {
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e.preventDefault();
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addShareMedia();
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};
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document.getElementById('unsharebutton').onclick = function(e) {
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e.preventDefault();
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delUpMediaKind('screenshare');
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}
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/** @returns {number} */
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function getMaxVideoThroughput() {
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let v = getSettings().send;
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switch(v) {
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case 'lowest':
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return 150000;
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case 'low':
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return 300000;
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case 'normal':
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return 700000;
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case 'unlimited':
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return null;
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default:
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console.error('Unknown video quality', v);
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return 700000;
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}
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}
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getSelectElement('sendselect').onchange = async function(e) {
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if(!(this instanceof HTMLSelectElement))
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throw new Error('Unexpected type for this');
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updateSettings({send: this.value});
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let t = getMaxVideoThroughput();
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for(let id in serverConnection.up) {
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let c = serverConnection.up[id];
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if(c.kind === 'local')
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await setMaxVideoThroughput(c, t);
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}
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}
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getSelectElement('requestselect').onchange = function(e) {
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e.preventDefault();
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if(!(this instanceof HTMLSelectElement))
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throw new Error('Unexpected type for this');
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updateSettings({request: this.value});
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serverConnection.request(this.value);
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};
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const activityDetectionInterval = 200;
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const activityDetectionPeriod = 700;
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const activityDetectionThreshold = 0.2;
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getInputElement('activitybox').onchange = function(e) {
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if(!(this instanceof HTMLInputElement))
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throw new Error('Unexpected type for this');
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updateSettings({activityDetection: this.checked});
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for(let id in serverConnection.down) {
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let c = serverConnection.down[id];
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if(this.checked)
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c.setStatsInterval(activityDetectionInterval);
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else {
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c.setStatsInterval(0);
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setActive(c, false);
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}
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}
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}
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/**
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* @this {Stream}
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* @param {Object<string,any>} stats
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*/
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function gotUpStats(stats) {
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let c = this;
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let text = '';
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c.pc.getSenders().forEach(s => {
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let tid = s.track && s.track.id;
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let stats = tid && c.stats[tid];
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let rate = stats && stats['outbound-rtp'] && stats['outbound-rtp'].rate;
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if(typeof rate === 'number') {
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if(text)
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text = text + ' + ';
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text = text + Math.round(rate / 1000) + 'kbps';
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}
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});
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setLabel(c, text);
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}
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/**
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* @param {Stream} c
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* @param {boolean} value
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*/
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function setActive(c, value) {
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let peer = document.getElementById('peer-' + c.id);
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if(value)
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peer.classList.add('peer-active');
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else
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peer.classList.remove('peer-active');
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}
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/**
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* @this {Stream}
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* @param {Object<string,any>} stats
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*/
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function gotDownStats(stats) {
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if(!getInputElement('activitybox').checked)
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return;
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let c = this;
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let maxEnergy = 0;
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c.pc.getReceivers().forEach(r => {
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let tid = r.track && r.track.id;
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let s = tid && stats[tid];
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let energy = s && s['track'] && s['track'].audioEnergy;
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if(typeof energy === 'number')
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maxEnergy = Math.max(maxEnergy, energy);
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});
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// totalAudioEnergy is defined as the integral of the square of the
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// volume, so square the threshold.
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if(maxEnergy > activityDetectionThreshold * activityDetectionThreshold) {
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c.userdata.lastVoiceActivity = Date.now();
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setActive(c, true);
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} else {
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let last = c.userdata.lastVoiceActivity;
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if(!last || Date.now() - last > activityDetectionPeriod)
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setActive(c, false);
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}
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}
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/**
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* @param {HTMLSelectElement} select
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* @param {string} label
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* @param {string} [value]
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*/
|
|
function addSelectOption(select, label, value) {
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if(!value)
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value = label;
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for(let i = 0; i < select.children.length; i++) {
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let child = select.children[i];
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if(!(child instanceof HTMLOptionElement)) {
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console.warn('Unexpected select child');
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continue;
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}
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if(child.value === value) {
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if(child.label !== label) {
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child.label = label;
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}
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return;
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}
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}
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let option = document.createElement('option');
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option.value = value;
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option.textContent = label;
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select.appendChild(option);
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}
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|
|
/**
|
|
* @param {HTMLSelectElement} select
|
|
* @param {string} value
|
|
*/
|
|
function selectOptionAvailable(select, value) {
|
|
let children = select.children;
|
|
for(let i = 0; i < children.length; i++) {
|
|
let child = select.children[i];
|
|
if(!(child instanceof HTMLOptionElement)) {
|
|
console.warn('Unexpected select child');
|
|
continue;
|
|
}
|
|
if(child.value === value)
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @param {HTMLSelectElement} select
|
|
* @returns {string}
|
|
*/
|
|
function selectOptionDefault(select) {
|
|
/* First non-empty option. */
|
|
for(let i = 0; i < select.children.length; i++) {
|
|
let child = select.children[i];
|
|
if(!(child instanceof HTMLOptionElement)) {
|
|
console.warn('Unexpected select child');
|
|
continue;
|
|
}
|
|
if(child.value)
|
|
return child.value;
|
|
}
|
|
/* The empty option is always available. */
|
|
return '';
|
|
}
|
|
|
|
/* media names might not be available before we call getDisplayMedia. So
|
|
we call this twice, the second time to update the menu with user-readable
|
|
labels. */
|
|
/** @type {boolean} */
|
|
let mediaChoicesDone = false;
|
|
|
|
/**
|
|
* @param{boolean} done
|
|
*/
|
|
async function setMediaChoices(done) {
|
|
if(mediaChoicesDone)
|
|
return;
|
|
|
|
let devices = [];
|
|
try {
|
|
devices = await navigator.mediaDevices.enumerateDevices();
|
|
} catch(e) {
|
|
console.error(e);
|
|
return;
|
|
}
|
|
|
|
let cn = 1, mn = 1;
|
|
|
|
devices.forEach(d => {
|
|
let label = d.label;
|
|
if(d.kind === 'videoinput') {
|
|
if(!label)
|
|
label = `Camera ${cn}`;
|
|
addSelectOption(getSelectElement('videoselect'),
|
|
label, d.deviceId);
|
|
cn++;
|
|
} else if(d.kind === 'audioinput') {
|
|
if(!label)
|
|
label = `Microphone ${mn}`;
|
|
addSelectOption(getSelectElement('audioselect'),
|
|
label, d.deviceId);
|
|
mn++;
|
|
}
|
|
});
|
|
|
|
mediaChoicesDone = done;
|
|
}
|
|
|
|
|
|
/**
|
|
* @param {string} [id]
|
|
*/
|
|
function newUpStream(id) {
|
|
let c = serverConnection.newUpStream(id);
|
|
c.onstatus = function(status) {
|
|
setMediaStatus(c);
|
|
}
|
|
c.onerror = function(e) {
|
|
console.error(e);
|
|
displayError(e);
|
|
delUpMedia(c);
|
|
}
|
|
c.onabort = function() {
|
|
delUpMedia(c);
|
|
}
|
|
c.onnegotiationcompleted = function() {
|
|
setMaxVideoThroughput(c, getMaxVideoThroughput())
|
|
}
|
|
return c;
|
|
}
|
|
|
|
/**
|
|
* @param {Stream} c
|
|
* @param {number} [bps]
|
|
*/
|
|
async function setMaxVideoThroughput(c, bps) {
|
|
let senders = c.pc.getSenders();
|
|
for(let i = 0; i < senders.length; i++) {
|
|
let s = senders[i];
|
|
if(!s.track || s.track.kind !== 'video')
|
|
continue;
|
|
let p = s.getParameters();
|
|
if(!p.encodings)
|
|
p.encodings = [{}];
|
|
p.encodings.forEach(e => {
|
|
if(bps > 0)
|
|
e.maxBitrate = bps;
|
|
else
|
|
delete e.maxBitrate;
|
|
});
|
|
try {
|
|
await s.setParameters(p);
|
|
} catch(e) {
|
|
console.error(e);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {string} [id]
|
|
*/
|
|
async function addLocalMedia(id) {
|
|
if(!getUserPass())
|
|
return;
|
|
|
|
let settings = getSettings();
|
|
|
|
let audio = settings.audio ? {deviceId: settings.audio} : false;
|
|
let video = settings.video ? {deviceId: settings.video} : false;
|
|
|
|
if(audio) {
|
|
if(settings.studioMode) {
|
|
audio.echoCancellation = false;
|
|
audio.noiseSuppression = false;
|
|
audio.channelCount = 2;
|
|
audio.latency = 0.01;
|
|
audio.autoGainControl = false;
|
|
}
|
|
}
|
|
|
|
if(video) {
|
|
if(settings.blackboardMode) {
|
|
video.width = { min: 640, ideal: 1920 };
|
|
video.height = { min: 400, ideal: 1080 };
|
|
}
|
|
}
|
|
|
|
let old = id && serverConnection.up[id];
|
|
|
|
if(!audio && !video) {
|
|
if(old)
|
|
delUpMedia(old);
|
|
return;
|
|
}
|
|
|
|
if(old)
|
|
stopUpMedia(old);
|
|
|
|
let constraints = {audio: audio, video: video};
|
|
/** @type {MediaStream} */
|
|
let stream = null;
|
|
try {
|
|
stream = await navigator.mediaDevices.getUserMedia(constraints);
|
|
} catch(e) {
|
|
displayError(e);
|
|
if(old)
|
|
delUpMedia(old);
|
|
return;
|
|
}
|
|
|
|
setMediaChoices(true);
|
|
|
|
let c = newUpStream(id);
|
|
|
|
c.kind = 'local';
|
|
c.stream = stream;
|
|
let mute = getSettings().localMute;
|
|
stream.getTracks().forEach(t => {
|
|
c.labels[t.id] = t.kind
|
|
if(t.kind == 'audio') {
|
|
if(mute)
|
|
t.enabled = false;
|
|
} else if(t.kind == 'video') {
|
|
if(settings.blackboardMode) {
|
|
/** @ts-ignore */
|
|
t.contentHint = 'detail';
|
|
}
|
|
}
|
|
c.pc.addTrack(t, stream);
|
|
});
|
|
|
|
c.onstats = gotUpStats;
|
|
c.setStatsInterval(2000);
|
|
await setMedia(c, true);
|
|
setButtonsVisibility();
|
|
}
|
|
|
|
async function addShareMedia() {
|
|
if(!getUserPass())
|
|
return;
|
|
|
|
/** @type {MediaStream} */
|
|
let stream = null;
|
|
try {
|
|
if(!('getDisplayMedia' in navigator.mediaDevices))
|
|
throw new Error('Your browser does not support screen sharing');
|
|
/** @ts-ignore */
|
|
stream = await navigator.mediaDevices.getDisplayMedia({video: true});
|
|
} catch(e) {
|
|
console.error(e);
|
|
displayError(e);
|
|
return;
|
|
}
|
|
|
|
let c = newUpStream();
|
|
c.kind = 'screenshare';
|
|
c.stream = stream;
|
|
stream.getTracks().forEach(t => {
|
|
c.pc.addTrack(t, stream);
|
|
t.onended = e => {
|
|
delUpMedia(c);
|
|
};
|
|
c.labels[t.id] = 'screenshare';
|
|
});
|
|
c.onstats = gotUpStats;
|
|
c.setStatsInterval(2000);
|
|
await setMedia(c, true);
|
|
setButtonsVisibility()
|
|
}
|
|
|
|
/**
|
|
* @param {Stream} c
|
|
*/
|
|
function stopUpMedia(c) {
|
|
if(!c.stream)
|
|
return;
|
|
c.stream.getTracks().forEach(t => {
|
|
try {
|
|
t.stop();
|
|
} catch(e) {
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @param {Stream} c
|
|
*/
|
|
function delUpMedia(c) {
|
|
stopUpMedia(c);
|
|
try {
|
|
delMedia(c.id);
|
|
} catch(e) {
|
|
console.warn(e);
|
|
}
|
|
c.close(true);
|
|
delete(serverConnection.up[c.id]);
|
|
setButtonsVisibility()
|
|
}
|
|
|
|
/**
|
|
* delUpMediaKind reoves all up media of the given kind. If kind is
|
|
* falseish, it removes all up media.
|
|
* @param {string} kind
|
|
*/
|
|
function delUpMediaKind(kind) {
|
|
for(let id in serverConnection.up) {
|
|
let c = serverConnection.up[id];
|
|
if(kind && c.kind != kind)
|
|
continue
|
|
c.close(true);
|
|
delMedia(id);
|
|
delete(serverConnection.up[id]);
|
|
}
|
|
|
|
setButtonsVisibility();
|
|
hideVideo();
|
|
}
|
|
|
|
/**
|
|
* @param {string} kind
|
|
*/
|
|
function findUpMedia(kind) {
|
|
for(let id in serverConnection.up) {
|
|
if(serverConnection.up[id].kind === kind)
|
|
return id;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* @param {boolean} mute
|
|
*/
|
|
function muteLocalTracks(mute) {
|
|
if(!serverConnection)
|
|
return;
|
|
for(let id in serverConnection.up) {
|
|
let c = serverConnection.up[id];
|
|
if(c.kind === 'local') {
|
|
let stream = c.stream;
|
|
stream.getTracks().forEach(t => {
|
|
if(t.kind === 'audio') {
|
|
t.enabled = !mute;
|
|
}
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Stream} c
|
|
* @param {boolean} isUp
|
|
*/
|
|
function setMedia(c, isUp) {
|
|
let peersdiv = document.getElementById('peers');
|
|
|
|
let div = document.getElementById('peer-' + c.id);
|
|
if(!div) {
|
|
div = document.createElement('div');
|
|
div.id = 'peer-' + c.id;
|
|
div.classList.add('peer');
|
|
peersdiv.appendChild(div);
|
|
}
|
|
|
|
let media = /** @type {HTMLVideoElement} */
|
|
(document.getElementById('media-' + c.id));
|
|
if(!media) {
|
|
media = document.createElement('video');
|
|
media.id = 'media-' + c.id;
|
|
media.classList.add('media');
|
|
media.autoplay = true;
|
|
/** @ts-ignore */
|
|
media.playsinline = true;
|
|
media.controls = true;
|
|
if(isUp)
|
|
media.muted = true;
|
|
div.appendChild(media);
|
|
}
|
|
|
|
let label = document.getElementById('label-' + c.id);
|
|
if(!label) {
|
|
label = document.createElement('div');
|
|
label.id = 'label-' + c.id;
|
|
label.classList.add('label');
|
|
div.appendChild(label);
|
|
}
|
|
|
|
media.srcObject = c.stream;
|
|
setLabel(c);
|
|
setMediaStatus(c);
|
|
|
|
showVideo();
|
|
resizePeers();
|
|
}
|
|
|
|
/**
|
|
* @param {string} id
|
|
*/
|
|
function delMedia(id) {
|
|
let mediadiv = document.getElementById('peers');
|
|
let peer = document.getElementById('peer-' + id);
|
|
if(!peer)
|
|
throw new Error('Removing unknown media');
|
|
|
|
let media = /** @type{HTMLVideoElement} */
|
|
(document.getElementById('media-' + id));
|
|
|
|
media.srcObject = null;
|
|
mediadiv.removeChild(peer);
|
|
|
|
resizePeers();
|
|
hideVideo();
|
|
}
|
|
|
|
/**
|
|
* @param {Stream} c
|
|
*/
|
|
function setMediaStatus(c) {
|
|
let state = c && c.pc && c.pc.iceConnectionState;
|
|
let good = state === 'connected' || state === 'completed';
|
|
|
|
let media = document.getElementById('media-' + c.id);
|
|
if(!media) {
|
|
console.warn('Setting status of unknown media.');
|
|
return;
|
|
}
|
|
if(good)
|
|
media.classList.remove('media-failed');
|
|
else
|
|
media.classList.add('media-failed');
|
|
}
|
|
|
|
|
|
/**
|
|
* @param {Stream} c
|
|
* @param {string} [fallback]
|
|
*/
|
|
function setLabel(c, fallback) {
|
|
let label = document.getElementById('label-' + c.id);
|
|
if(!label)
|
|
return;
|
|
let l = c.label;
|
|
if(l) {
|
|
label.textContent = l;
|
|
label.classList.remove('label-fallback');
|
|
} else if(fallback) {
|
|
label.textContent = fallback;
|
|
label.classList.add('label-fallback');
|
|
} else {
|
|
label.textContent = '';
|
|
label.classList.remove('label-fallback');
|
|
}
|
|
}
|
|
|
|
function resizePeers() {
|
|
let count =
|
|
Object.keys(serverConnection.up).length +
|
|
Object.keys(serverConnection.down).length;
|
|
let peers = document.getElementById('peers');
|
|
let columns = Math.ceil(Math.sqrt(count));
|
|
if (!count)
|
|
// No video, nothing to resize.
|
|
return;
|
|
let container = document.getElementById("video-container")
|
|
// Peers div has total padding of 30px, we remove 30 on offsetHeight
|
|
let max_video_height = Math.trunc((peers.offsetHeight - 30) / columns);
|
|
|
|
let media_list = document.getElementsByClassName("media");
|
|
for(let i = 0; i < media_list.length; i++) {
|
|
let media = media_list[i];
|
|
if(!(media instanceof HTMLMediaElement)) {
|
|
console.warn('Unexpected media');
|
|
continue;
|
|
}
|
|
media.style['max_height'] = max_video_height + "px";
|
|
}
|
|
|
|
if (count <= 2 && container.offsetHeight > container.offsetWidth) {
|
|
peers.style['grid-template-columns'] = "repeat(1, 1fr)";
|
|
} else {
|
|
peers.style['grid-template-columns'] = `repeat(${columns}, 1fr)`;
|
|
}
|
|
}
|
|
|
|
/** @type{Object<string,string>} */
|
|
let users = {};
|
|
|
|
/**
|
|
* @param {string} id
|
|
* @param {string} name
|
|
*/
|
|
function addUser(id, name) {
|
|
if(!name)
|
|
name = null;
|
|
if(id in users)
|
|
throw new Error('Duplicate user id');
|
|
users[id] = name;
|
|
|
|
let div = document.getElementById('users');
|
|
let user = document.createElement('div');
|
|
user.id = 'user-' + id;
|
|
user.classList.add("user-p");
|
|
user.textContent = name ? name : '(anon)';
|
|
|
|
if(name) {
|
|
let us = div.children;
|
|
for(let i = 0; i < us.length; i++) {
|
|
let child = us[i];
|
|
let childname = users[child.id.slice('user-'.length)];
|
|
if(!childname || childname > name) {
|
|
div.insertBefore(user, child);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
div.appendChild(user);
|
|
}
|
|
|
|
/**
|
|
* @param {string} id
|
|
* @param {string} name
|
|
*/
|
|
function delUser(id, name) {
|
|
if(!name)
|
|
name = null;
|
|
if(!(id in users))
|
|
throw new Error('Unknown user id');
|
|
if(users[id] !== name)
|
|
throw new Error('Inconsistent user name');
|
|
delete(users[id]);
|
|
let div = document.getElementById('users');
|
|
let user = document.getElementById('user-' + id);
|
|
div.removeChild(user);
|
|
}
|
|
|
|
function resetUsers() {
|
|
for(let id in users)
|
|
delUser(id, users[id]);
|
|
}
|
|
|
|
/**
|
|
* @param {string} id
|
|
* @param {string} kind
|
|
* @param {string} name
|
|
*/
|
|
function gotUser(id, kind, name) {
|
|
switch(kind) {
|
|
case 'add':
|
|
addUser(id, name);
|
|
break;
|
|
case 'delete':
|
|
delUser(id, name);
|
|
break;
|
|
default:
|
|
console.warn('Unknown user kind', kind);
|
|
break;
|
|
}
|
|
}
|
|
|
|
function displayUsername() {
|
|
let userpass = getUserPass();
|
|
let text = '';
|
|
if(userpass && userpass.username)
|
|
text = 'as ' + userpass.username;
|
|
if(serverConnection.permissions.op && serverConnection.permissions.present)
|
|
text = text + ' (op, presenter)';
|
|
else if(serverConnection.permissions.op)
|
|
text = text + ' (op)';
|
|
else if(serverConnection.permissions.present)
|
|
text = text + ' (presenter)';
|
|
document.getElementById('userspan').textContent = text;
|
|
}
|
|
|
|
function clearUsername() {
|
|
document.getElementById('userspan').textContent = '';
|
|
}
|
|
|
|
/**
|
|
* @param {Object<string,boolean>} perms
|
|
*/
|
|
function gotPermissions(perms) {
|
|
displayUsername();
|
|
setButtonsVisibility();
|
|
if(serverConnection.permissions.present)
|
|
displayMessage("Press Present to enable your camera or microphone");
|
|
}
|
|
|
|
const urlRegexp = /https?:\/\/[-a-zA-Z0-9@:%/._\\+~#=?]+[-a-zA-Z0-9@:%/_\\+~#=]/g;
|
|
|
|
/**
|
|
* @param {string} line
|
|
* @returns {(Text|HTMLElement)[]}
|
|
*/
|
|
function formatLine(line) {
|
|
let r = new RegExp(urlRegexp);
|
|
let result = [];
|
|
let pos = 0;
|
|
while(true) {
|
|
let m = r.exec(line);
|
|
if(!m)
|
|
break;
|
|
result.push(document.createTextNode(line.slice(pos, m.index)));
|
|
let a = document.createElement('a');
|
|
a.href = m[0];
|
|
a.textContent = m[0];
|
|
a.target = '_blank';
|
|
a.rel = 'noreferrer noopener';
|
|
result.push(a);
|
|
pos = m.index + m[0].length;
|
|
}
|
|
result.push(document.createTextNode(line.slice(pos)));
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* @param {string[]} lines
|
|
* @returns {HTMLElement}
|
|
*/
|
|
function formatLines(lines) {
|
|
let elts = [];
|
|
if(lines.length > 0)
|
|
elts = formatLine(lines[0]);
|
|
for(let i = 1; i < lines.length; i++) {
|
|
elts.push(document.createElement('br'));
|
|
elts = elts.concat(formatLine(lines[i]));
|
|
}
|
|
let elt = document.createElement('p');
|
|
elts.forEach(e => elt.appendChild(e));
|
|
return elt;
|
|
}
|
|
|
|
/**
|
|
* @typedef {Object} lastMessage
|
|
* @property {string} [nick]
|
|
* @property {string} [peerId]
|
|
*/
|
|
|
|
/** @type {lastMessage} */
|
|
let lastMessage = {};
|
|
|
|
/**
|
|
* @param {string} peerId
|
|
* @param {string} nick
|
|
* @param {string} kind
|
|
* @param {string} message
|
|
*/
|
|
function addToChatbox(peerId, nick, kind, message){
|
|
let userpass = getUserPass();
|
|
let row = document.createElement('div');
|
|
row.classList.add('message-row');
|
|
let container = document.createElement('div');
|
|
container.classList.add('message');
|
|
row.appendChild(container);
|
|
if (userpass.username === nick) {
|
|
container.classList.add('message-sender');
|
|
}
|
|
if(kind !== 'me') {
|
|
let p = formatLines(message.split('\n'));
|
|
if (lastMessage.nick !== nick || lastMessage.peerId !== peerId) {
|
|
let user = document.createElement('p');
|
|
user.textContent = nick;
|
|
user.classList.add('message-user');
|
|
container.appendChild(user);
|
|
}
|
|
p.classList.add('message-content');
|
|
container.appendChild(p);
|
|
lastMessage.nick = nick;
|
|
lastMessage.peerId = peerId;
|
|
} else {
|
|
let asterisk = document.createElement('span');
|
|
asterisk.textContent = '*';
|
|
asterisk.classList.add('message-me-asterisk');
|
|
let user = document.createElement('span');
|
|
user.textContent = nick;
|
|
user.classList.add('message-me-user');
|
|
let content = document.createElement('span');
|
|
formatLine(message).forEach(elt => {
|
|
content.appendChild(elt);
|
|
});
|
|
content.classList.add('message-me-content');
|
|
container.appendChild(asterisk);
|
|
container.appendChild(user);
|
|
container.appendChild(content);
|
|
container.classList.add('message-me');
|
|
delete(lastMessage.nick);
|
|
delete(lastMessage.peerId);
|
|
}
|
|
|
|
let box = document.getElementById('box');
|
|
box.appendChild(row);
|
|
if(box.scrollHeight > box.clientHeight) {
|
|
box.scrollTop = box.scrollHeight - box.clientHeight;
|
|
}
|
|
|
|
return message;
|
|
}
|
|
|
|
function clearChat() {
|
|
lastMessage = {};
|
|
document.getElementById('box').textContent = '';
|
|
}
|
|
|
|
/**
|
|
* parseCommand splits a string into two space-separated parts. The first
|
|
* part may be quoted and may include backslash escapes.
|
|
*
|
|
* @param {string} line
|
|
* @returns {string[]}
|
|
*/
|
|
function parseCommand(line) {
|
|
let i = 0;
|
|
while(i < line.length && line[i] === ' ')
|
|
i++;
|
|
let start = ' ';
|
|
if(i < line.length && line[i] === '"' || line[i] === "'") {
|
|
start = line[i];
|
|
i++;
|
|
}
|
|
let first = "";
|
|
while(i < line.length) {
|
|
if(line[i] === start) {
|
|
if(start !== ' ')
|
|
i++;
|
|
break;
|
|
}
|
|
if(line[i] === '\\' && i < line.length - 1)
|
|
i++;
|
|
first = first + line[i];
|
|
i++;
|
|
}
|
|
|
|
while(i < line.length && line[i] === ' ')
|
|
i++;
|
|
return [first, line.slice(i)];
|
|
}
|
|
|
|
function handleInput() {
|
|
let input = /** @type {HTMLTextAreaElement} */
|
|
(document.getElementById('input'));
|
|
let data = input.value;
|
|
input.value = '';
|
|
|
|
let message, me;
|
|
|
|
if(data === '')
|
|
return;
|
|
|
|
if(data[0] === '/') {
|
|
if(data.length > 1 && data[1] === '/') {
|
|
message = data.substring(1);
|
|
me = false;
|
|
} else {
|
|
let cmd, rest;
|
|
let space = data.indexOf(' ');
|
|
if(space < 0) {
|
|
cmd = data;
|
|
rest = '';
|
|
} else {
|
|
cmd = data.slice(0, space);
|
|
rest = data.slice(space + 1);
|
|
}
|
|
|
|
switch(cmd) {
|
|
case '/me':
|
|
message = rest;
|
|
me = true;
|
|
break;
|
|
case '/leave':
|
|
serverConnection.close();
|
|
return;
|
|
case '/clear':
|
|
if(!serverConnection.permissions.op) {
|
|
displayError("You're not an operator");
|
|
return;
|
|
}
|
|
serverConnection.groupAction('clearchat');
|
|
return;
|
|
case '/lock':
|
|
case '/unlock':
|
|
if(!serverConnection.permissions.op) {
|
|
displayError("You're not an operator");
|
|
return;
|
|
}
|
|
serverConnection.groupAction(cmd.slice(1), rest);
|
|
return;
|
|
case '/record':
|
|
case '/unrecord':
|
|
if(!serverConnection.permissions.record) {
|
|
displayError("You're not allowed to record");
|
|
return;
|
|
}
|
|
serverConnection.groupAction(cmd.slice(1));
|
|
return;
|
|
case '/op':
|
|
case '/unop':
|
|
case '/kick':
|
|
case '/present':
|
|
case '/unpresent': {
|
|
if(!serverConnection.permissions.op) {
|
|
displayError("You're not an operator");
|
|
return;
|
|
}
|
|
let parsed = parseCommand(rest);
|
|
let id;
|
|
if(parsed[0] in users) {
|
|
id = parsed[0];
|
|
} else {
|
|
for(let i in users) {
|
|
if(users[i] === parsed[0]) {
|
|
id = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if(!id) {
|
|
displayError('Unknown user ' + parsed[0]);
|
|
return;
|
|
}
|
|
serverConnection.userAction(cmd.slice(1), id, parsed[1]);
|
|
return;
|
|
}
|
|
default:
|
|
displayError('Uknown command ' + cmd);
|
|
return;
|
|
}
|
|
}
|
|
} else {
|
|
message = data;
|
|
me = false;
|
|
}
|
|
|
|
let username = getUsername();
|
|
if(!username) {
|
|
displayError("Sorry, you're anonymous, you cannot chat");
|
|
return;
|
|
}
|
|
|
|
try {
|
|
serverConnection.chat(username, me ? 'me' : '', message);
|
|
} catch(e) {
|
|
console.error(e);
|
|
displayError(e);
|
|
}
|
|
}
|
|
|
|
document.getElementById('inputform').onsubmit = function(e) {
|
|
e.preventDefault();
|
|
handleInput();
|
|
};
|
|
|
|
document.getElementById('input').onkeypress = function(e) {
|
|
if(e.key === 'Enter' && !e.ctrlKey && !e.shiftKey && !e.metaKey) {
|
|
e.preventDefault();
|
|
handleInput();
|
|
}
|
|
};
|
|
|
|
function chatResizer(e) {
|
|
e.preventDefault();
|
|
let full_width = document.getElementById("mainrow").offsetWidth;
|
|
let left = document.getElementById("left");
|
|
let right = document.getElementById("right");
|
|
|
|
let start_x = e.clientX;
|
|
let start_width = left.offsetWidth;
|
|
|
|
function start_drag(e) {
|
|
let left_width = (start_width + e.clientX - start_x) * 100 / full_width;
|
|
left.style.flex = left_width.toString();
|
|
right.style.flex = (100 - left_width).toString();
|
|
}
|
|
function stop_drag(e) {
|
|
document.documentElement.removeEventListener(
|
|
'mousemove', start_drag, false,
|
|
);
|
|
document.documentElement.removeEventListener(
|
|
'mouseup', stop_drag, false,
|
|
);
|
|
}
|
|
|
|
document.documentElement.addEventListener(
|
|
'mousemove', start_drag, false,
|
|
);
|
|
document.documentElement.addEventListener(
|
|
'mouseup', stop_drag, false,
|
|
);
|
|
}
|
|
|
|
document.getElementById('resizer').addEventListener('mousedown', chatResizer, false);
|
|
|
|
/** @enum {string} */
|
|
const MessageLevel = {
|
|
info: 'info',
|
|
warning: 'warning',
|
|
error: 'error',
|
|
}
|
|
|
|
/**
|
|
* @param {string} message
|
|
* @param {MessageLevel} [level]
|
|
*/
|
|
function displayError(message, level) {
|
|
if(!level)
|
|
level = MessageLevel.error;
|
|
|
|
var background = 'linear-gradient(to right, #e20a0a, #df2d2d)';
|
|
var position = 'center';
|
|
var gravity = 'top';
|
|
|
|
switch(level) {
|
|
case MessageLevel.info:
|
|
background = 'linear-gradient(to right, #529518, #96c93d)';
|
|
position = 'right';
|
|
gravity = 'bottom';
|
|
break;
|
|
case MessageLevel.warning:
|
|
background = "linear-gradient(to right, #edd800, #c9c200)";
|
|
break;
|
|
}
|
|
|
|
/** @ts-ignore */
|
|
Toastify({
|
|
text: message,
|
|
duration: 4000,
|
|
close: true,
|
|
position: position,
|
|
gravity: gravity,
|
|
backgroundColor: background,
|
|
className: level,
|
|
}).showToast();
|
|
}
|
|
|
|
/**
|
|
* @param {string} message
|
|
*/
|
|
function displayWarning(message) {
|
|
return displayError(message, MessageLevel.warning);
|
|
}
|
|
|
|
/**
|
|
* @param {string} message
|
|
*/
|
|
function displayMessage(message) {
|
|
return displayError(message, MessageLevel.info);
|
|
}
|
|
|
|
document.getElementById('userform').onsubmit = function(e) {
|
|
e.preventDefault();
|
|
let username = getInputElement('username').value.trim();
|
|
let password = getInputElement('password').value;
|
|
storeUserPass(username, password);
|
|
serverConnect();
|
|
};
|
|
|
|
document.getElementById('disconnectbutton').onclick = function(e) {
|
|
serverConnection.close();
|
|
let user_box = document.getElementById('userDropdown');
|
|
if (user_box.classList.contains("show")) {
|
|
user_box.classList.toggle("show");
|
|
}
|
|
};
|
|
|
|
function openNav() {
|
|
document.getElementById("sidebarnav").style.width = "250px";
|
|
}
|
|
|
|
function closeNav() {
|
|
document.getElementById("sidebarnav").style.width = "0";
|
|
}
|
|
|
|
document.getElementById('sidebarCollapse').onclick = function(e) {
|
|
document.getElementById("left-sidebar").classList.toggle("active");
|
|
document.getElementById("mainrow").classList.toggle("full-width-active");
|
|
};
|
|
|
|
document.getElementById('openside').onclick = function(e) {
|
|
e.preventDefault();
|
|
let sidewidth = document.getElementById("sidebarnav").style.width;
|
|
if (sidewidth !== "0px" && sidewidth !== "") {
|
|
closeNav();
|
|
return;
|
|
} else {
|
|
openNav();
|
|
}
|
|
};
|
|
|
|
document.getElementById('user').onclick = function(e) {
|
|
e.preventDefault();
|
|
document.getElementById("userDropdown").classList.toggle("show");
|
|
};
|
|
|
|
|
|
document.getElementById('clodeside').onclick = function(e) {
|
|
e.preventDefault();
|
|
closeNav();
|
|
};
|
|
|
|
document.getElementById('collapse-video').onclick = function(e) {
|
|
e.preventDefault();
|
|
if(!(this instanceof HTMLElement))
|
|
throw new Error('Unexpected type for this');
|
|
let width = window.innerWidth;
|
|
if (width <= 768) {
|
|
let user_box = document.getElementById('userDropdown');
|
|
if (user_box.classList.contains("show")) {
|
|
return;
|
|
}
|
|
// fixed div for small screen
|
|
this.style.display = "";
|
|
hideVideo(true);
|
|
document.getElementById('switch-video').style.display = "block";
|
|
}
|
|
};
|
|
|
|
document.getElementById('switch-video').onclick = function(e) {
|
|
e.preventDefault();
|
|
if(!(this instanceof HTMLElement))
|
|
throw new Error('Unexpected type for this');
|
|
showVideo();
|
|
this.style.display = "";
|
|
document.getElementById('collapse-video').style.display = "block";
|
|
};
|
|
|
|
window.onclick = function(event) {
|
|
let user_box = document.getElementById('userDropdown');
|
|
if (user_box.classList.contains("show") && event.target.id != "user") {
|
|
let parent = event.target;
|
|
while (parent.id !== "main" && parent.id !== "userDropdown" &&
|
|
parent.id !== "user" && parent.tagName !== "body") {
|
|
parent = parent.parentNode;
|
|
}
|
|
if (parent.id !="userDropdown" && parent.id !== "user") {
|
|
user_box.classList.toggle("show");
|
|
}
|
|
}
|
|
};
|
|
|
|
async function serverConnect() {
|
|
serverConnection = new ServerConnection();
|
|
serverConnection.onconnected = gotConnected;
|
|
serverConnection.onclose = gotClose;
|
|
serverConnection.ondownstream = gotDownStream;
|
|
serverConnection.onuser = gotUser;
|
|
serverConnection.onpermissions = gotPermissions;
|
|
serverConnection.onchat = addToChatbox;
|
|
serverConnection.onclearchat = clearChat;
|
|
serverConnection.onusermessage = function(kind, message) {
|
|
if(kind === 'error')
|
|
displayError(`The server said: ${message}`);
|
|
else
|
|
displayWarning(`The server said: ${message}`);
|
|
}
|
|
let url = `ws${location.protocol === 'https:' ? 's' : ''}://${location.host}/ws`;
|
|
try {
|
|
await serverConnection.connect(url);
|
|
} catch(e) {
|
|
console.error(e);
|
|
displayError(e.message ? e.message : "Couldn't connect to " + url);
|
|
}
|
|
}
|
|
|
|
function start() {
|
|
group = decodeURIComponent(location.pathname.replace(/^\/[a-z]*\//, ''));
|
|
let title = group.charAt(0).toUpperCase() + group.slice(1);
|
|
if(group !== '') {
|
|
document.title = title;
|
|
document.getElementById('title').textContent = title;
|
|
}
|
|
|
|
setMediaChoices(false).then(e => reflectSettings());
|
|
|
|
document.getElementById("user").classList.add('invisible');
|
|
document.getElementById("login-container").classList.remove('invisible');
|
|
}
|
|
|
|
start();
|