import EventEmitter from 'events'; import { urlObjectToString } from '../../../react/features/base/util/uri'; import { PostMessageTransportBackend, Transport } from '../../transport'; import electronPopupsConfig from './electronPopupsConfig.json'; import { getAvailableDevices, getCurrentDevices, isDeviceChangeAvailable, isDeviceListAvailable, isMultipleAudioInputSupported, setAudioInputDevice, setAudioOutputDevice, setVideoInputDevice } from './functions'; const logger = require('jitsi-meet-logger').getLogger(__filename); const ALWAYS_ON_TOP_FILENAMES = [ 'css/all.css', 'libs/alwaysontop.min.js' ]; /** * Maps the names of the commands expected by the API with the name of the * commands expected by jitsi-meet */ const commands = { avatarUrl: 'avatar-url', displayName: 'display-name', email: 'email', hangup: 'video-hangup', subject: 'subject', submitFeedback: 'submit-feedback', toggleAudio: 'toggle-audio', toggleChat: 'toggle-chat', toggleFilmStrip: 'toggle-film-strip', toggleShareScreen: 'toggle-share-screen', toggleTileView: 'toggle-tile-view', toggleVideo: 'toggle-video' }; /** * Maps the names of the events expected by the API with the name of the * events expected by jitsi-meet */ const events = { 'avatar-changed': 'avatarChanged', 'audio-availability-changed': 'audioAvailabilityChanged', 'audio-mute-status-changed': 'audioMuteStatusChanged', 'device-list-changed': 'deviceListChanged', 'display-name-change': 'displayNameChange', 'email-change': 'emailChange', 'feedback-submitted': 'feedbackSubmitted', 'feedback-prompt-displayed': 'feedbackPromptDisplayed', 'filmstrip-display-changed': 'filmstripDisplayChanged', 'incoming-message': 'incomingMessage', 'outgoing-message': 'outgoingMessage', 'participant-joined': 'participantJoined', 'participant-left': 'participantLeft', 'proxy-connection-event': 'proxyConnectionEvent', 'video-ready-to-close': 'readyToClose', 'video-conference-joined': 'videoConferenceJoined', 'video-conference-left': 'videoConferenceLeft', 'video-availability-changed': 'videoAvailabilityChanged', 'video-mute-status-changed': 'videoMuteStatusChanged', 'screen-sharing-status-changed': 'screenSharingStatusChanged', 'subject-change': 'subjectChange', 'tile-view-changed': 'tileViewChanged' }; /** * Last id of api object * @type {number} */ let id = 0; /** * Adds given number to the numberOfParticipants property of given APIInstance. * * @param {JitsiMeetExternalAPI} APIInstance - The instance of the API. * @param {int} number - The number of participants to be added to * numberOfParticipants property (this parameter can be negative number if the * numberOfParticipants should be decreased). * @returns {void} */ function changeParticipantNumber(APIInstance, number) { APIInstance._numberOfParticipants += number; } /** * Generates the URL for the iframe. * * @param {string} domain - The domain name of the server that hosts the * conference. * @param {string} [options] - Another optional parameters. * @param {Object} [options.configOverwrite] - Object containing configuration * options defined in config.js to be overridden. * @param {Object} [options.interfaceConfigOverwrite] - Object containing * configuration options defined in interface_config.js to be overridden. * @param {string} [options.jwt] - The JWT token if needed by jitsi-meet for * authentication. * @param {boolean} [options.noSSL] - If the value is true https won't be used. * @param {string} [options.roomName] - The name of the room to join. * @returns {string} The URL. */ function generateURL(domain, options = {}) { return urlObjectToString({ ...options, url: `${options.noSSL ? 'http' : 'https'}://${ domain}/#jitsi_meet_external_api_id=${id}` }); } /** * Parses the arguments passed to the constructor. If the old format is used * the function translates the arguments to the new format. * * @param {Array} args - The arguments to be parsed. * @returns {Object} JS object with properties. */ function parseArguments(args) { if (!args.length) { return {}; } const firstArg = args[0]; switch (typeof firstArg) { case 'string': // old arguments format case undefined: { // Not sure which format but we are trying to parse the old // format because if the new format is used everything will be undefined // anyway. const [ roomName, width, height, parentNode, configOverwrite, interfaceConfigOverwrite, noSSL, jwt, onload ] = args; return { roomName, width, height, parentNode, configOverwrite, interfaceConfigOverwrite, noSSL, jwt, onload }; } case 'object': // new arguments format return args[0]; default: throw new Error('Can\'t parse the arguments!'); } } /** * Compute valid values for height and width. If a number is specified it's * treated as pixel units. If the value is expressed in px, em, pt or * percentage, it's used as is. * * @param {any} value - The value to be parsed. * @returns {string|undefined} The parsed value that can be used for setting * sizes through the style property. If invalid value is passed the method * retuns undefined. */ function parseSizeParam(value) { let parsedValue; // This regex parses values of the form 100px, 100em, 100pt or 100%. // Values like 100 or 100px are handled outside of the regex, and // invalid values will be ignored and the minimum will be used. const re = /([0-9]*\.?[0-9]+)(em|pt|px|%)$/; if (typeof value === 'string' && String(value).match(re) !== null) { parsedValue = value; } else if (typeof value === 'number') { parsedValue = `${value}px`; } return parsedValue; } /** * The IFrame API interface class. */ export default class JitsiMeetExternalAPI extends EventEmitter { /** * Constructs new API instance. Creates iframe and loads Jitsi Meet in it. * * @param {string} domain - The domain name of the server that hosts the * conference. * @param {Object} [options] - Optional arguments. * @param {string} [options.roomName] - The name of the room to join. * @param {number|string} [options.width] - Width of the iframe. Check * parseSizeParam for format details. * @param {number|string} [options.height] - Height of the iframe. Check * parseSizeParam for format details. * @param {DOMElement} [options.parentNode] - The node that will contain the * iframe. * @param {Object} [options.configOverwrite] - Object containing * configuration options defined in config.js to be overridden. * @param {Object} [options.interfaceConfigOverwrite] - Object containing * configuration options defined in interface_config.js to be overridden. * @param {boolean} [options.noSSL] - If the value is true https won't be * used. * @param {string} [options.jwt] - The JWT token if needed by jitsi-meet for * authentication. * @param {string} [options.onload] - The onload function that will listen * for iframe onload event. * @param {Array} [options.invitees] - Array of objects containing * information about new participants that will be invited in the call. * @param {Array} [options.devices] - Array of objects containing * information about the initial devices that will be used in the call. */ constructor(domain, ...args) { super(); const { roomName = '', width = '100%', height = '100%', parentNode = document.body, configOverwrite = {}, interfaceConfigOverwrite = {}, noSSL = false, jwt = undefined, onload = undefined, invitees, devices } = parseArguments(args); this._parentNode = parentNode; this._url = generateURL(domain, { configOverwrite, interfaceConfigOverwrite, jwt, noSSL, roomName, devices }); this._createIFrame(height, width, onload); this._transport = new Transport({ backend: new PostMessageTransportBackend({ postisOptions: { scope: `jitsi_meet_external_api_${id}`, window: this._frame.contentWindow } }) }); if (Array.isArray(invitees) && invitees.length > 0) { this.invite(invitees); } this._isLargeVideoVisible = true; this._numberOfParticipants = 0; this._participants = {}; this._myUserID = undefined; this._onStageParticipant = undefined; this._setupListeners(); id++; } /** * Creates the iframe element. * * @param {number|string} height - The height of the iframe. Check * parseSizeParam for format details. * @param {number|string} width - The with of the iframe. Check * parseSizeParam for format details. * @param {Function} onload - The function that will listen * for onload event. * @returns {void} * * @private */ _createIFrame(height, width, onload) { const frameName = `jitsiConferenceFrame${id}`; this._frame = document.createElement('iframe'); this._frame.allow = 'camera; microphone'; this._frame.src = this._url; this._frame.name = frameName; this._frame.id = frameName; this._setSize(height, width); this._frame.setAttribute('allowFullScreen', 'true'); this._frame.style.border = 0; if (onload) { // waits for iframe resources to load // and fires event when it is done this._frame.onload = onload; } this._frame = this._parentNode.appendChild(this._frame); } /** * Returns arrays with the all resources for the always on top feature. * * @returns {Array} */ _getAlwaysOnTopResources() { const iframeWindow = this._frame.contentWindow; const iframeDocument = iframeWindow.document; let baseURL = ''; const base = iframeDocument.querySelector('base'); if (base && base.href) { baseURL = base.href; } else { const { protocol, host } = iframeWindow.location; baseURL = `${protocol}//${host}`; } return ALWAYS_ON_TOP_FILENAMES.map( filename => (new URL(filename, baseURL)).href ); } /** * Returns the id of the on stage participant. * * @returns {string} - The id of the on stage participant. */ _getOnStageParticipant() { return this._onStageParticipant; } /** * Getter for the large video element in Jitsi Meet. * * @returns {HTMLElement|undefined} - The large video. */ _getLargeVideo() { const iframe = this.getIFrame(); if (!this._isLargeVideoVisible || !iframe || !iframe.contentWindow || !iframe.contentWindow.document) { return; } return iframe.contentWindow.document.getElementById('largeVideo'); } /** * Sets the size of the iframe element. * * @param {number|string} height - The height of the iframe. * @param {number|string} width - The with of the iframe. * @returns {void} * * @private */ _setSize(height, width) { const parsedHeight = parseSizeParam(height); const parsedWidth = parseSizeParam(width); if (parsedHeight !== undefined) { this._frame.style.height = parsedHeight; } if (parsedWidth !== undefined) { this._frame.style.width = parsedWidth; } } /** * Setups listeners that are used internally for JitsiMeetExternalAPI. * * @returns {void} * * @private */ _setupListeners() { this._transport.on('event', ({ name, ...data }) => { const userID = data.id; switch (name) { case 'video-conference-joined': this._myUserID = userID; this._participants[userID] = { avatarURL: data.avatarURL }; // eslint-disable-next-line no-fallthrough case 'participant-joined': { this._participants[userID] = this._participants[userID] || {}; this._participants[userID].displayName = data.displayName; this._participants[userID].formattedDisplayName = data.formattedDisplayName; changeParticipantNumber(this, 1); break; } case 'participant-left': changeParticipantNumber(this, -1); delete this._participants[userID]; break; case 'display-name-change': { const user = this._participants[userID]; if (user) { user.displayName = data.displayname; user.formattedDisplayName = data.formattedDisplayName; } break; } case 'email-change': { const user = this._participants[userID]; if (user) { user.email = data.email; } break; } case 'avatar-changed': { const user = this._participants[userID]; if (user) { user.avatarURL = data.avatarURL; } break; } case 'on-stage-participant-changed': this._onStageParticipant = userID; this.emit('largeVideoChanged'); break; case 'large-video-visibility-changed': this._isLargeVideoVisible = data.isVisible; this.emit('largeVideoChanged'); break; case 'video-conference-left': changeParticipantNumber(this, -1); delete this._participants[this._myUserID]; break; } const eventName = events[name]; if (eventName) { this.emit(eventName, data); return true; } return false; }); } /** * Adds event listener to Meet Jitsi. * * @param {string} event - The name of the event. * @param {Function} listener - The listener. * @returns {void} * * @deprecated * NOTE: This method is not removed for backward comatability purposes. */ addEventListener(event, listener) { this.on(event, listener); } /** * Adds event listeners to Meet Jitsi. * * @param {Object} listeners - The object key should be the name of * the event and value - the listener. * Currently we support the following * events: * {@code incomingMessage} - receives event notifications about incoming * messages. The listener will receive object with the following structure: * {{ * 'from': from,//JID of the user that sent the message * 'nick': nick,//the nickname of the user that sent the message * 'message': txt//the text of the message * }} * {@code outgoingMessage} - receives event notifications about outgoing * messages. The listener will receive object with the following structure: * {{ * 'message': txt//the text of the message * }} * {@code displayNameChanged} - receives event notifications about display * name change. The listener will receive object with the following * structure: * {{ * jid: jid,//the JID of the participant that changed his display name * displayname: displayName //the new display name * }} * {@code participantJoined} - receives event notifications about new * participant. * The listener will receive object with the following structure: * {{ * jid: jid //the jid of the participant * }} * {@code participantLeft} - receives event notifications about the * participant that left the room. * The listener will receive object with the following structure: * {{ * jid: jid //the jid of the participant * }} * {@code video-conference-joined} - receives event notifications about the * local user has successfully joined the video conference. * The listener will receive object with the following structure: * {{ * roomName: room //the room name of the conference * }} * {@code video-conference-left} - receives event notifications about the * local user has left the video conference. * The listener will receive object with the following structure: * {{ * roomName: room //the room name of the conference * }} * {@code screenSharingStatusChanged} - receives event notifications about * turning on/off the local user screen sharing. * The listener will receive object with the following structure: * {{ * on: on //whether screen sharing is on * }} * {@code readyToClose} - all hangup operations are completed and Jitsi Meet * is ready to be disposed. * @returns {void} * * @deprecated * NOTE: This method is not removed for backward comatability purposes. */ addEventListeners(listeners) { for (const event in listeners) { // eslint-disable-line guard-for-in this.addEventListener(event, listeners[event]); } } /** * Removes the listeners and removes the Jitsi Meet frame. * * @returns {void} */ dispose() { this.emit('_willDispose'); this._transport.dispose(); this.removeAllListeners(); if (this._frame) { this._frame.parentNode.removeChild(this._frame); } } /** * Executes command. The available commands are: * {@code displayName} - Sets the display name of the local participant to * the value passed in the arguments array. * {@code subject} - Sets the subject of the conference, the value passed * in the arguments array. Note: Available only for moderator. * * {@code toggleAudio} - Mutes / unmutes audio with no arguments. * {@code toggleVideo} - Mutes / unmutes video with no arguments. * {@code toggleFilmStrip} - Hides / shows the filmstrip with no arguments. * * If the command doesn't require any arguments the parameter should be set * to empty array or it may be omitted. * * @param {string} name - The name of the command. * @returns {void} */ executeCommand(name, ...args) { if (!(name in commands)) { logger.error('Not supported command name.'); return; } this._transport.sendEvent({ data: args, name: commands[name] }); } /** * Executes commands. The available commands are: * {@code displayName} - Sets the display name of the local participant to * the value passed in the arguments array. * {@code toggleAudio} - Mutes / unmutes audio. No arguments. * {@code toggleVideo} - Mutes / unmutes video. No arguments. * {@code toggleFilmStrip} - Hides / shows the filmstrip. No arguments. * {@code toggleChat} - Hides / shows chat. No arguments. * {@code toggleShareScreen} - Starts / stops screen sharing. No arguments. * * @param {Object} commandList - The object with commands to be executed. * The keys of the object are the commands that will be executed and the * values are the arguments for the command. * @returns {void} */ executeCommands(commandList) { for (const key in commandList) { // eslint-disable-line guard-for-in this.executeCommand(key, commandList[key]); } } /** * Returns Promise that resolves with a list of available devices. * * @returns {Promise} */ getAvailableDevices() { return getAvailableDevices(this._transport); } /** * Returns Promise that resolves with current selected devices. * * @returns {Promise} */ getCurrentDevices() { return getCurrentDevices(this._transport); } /** * Check if the audio is available. * * @returns {Promise} - Resolves with true if the audio available, with * false if not and rejects on failure. */ isAudioAvailable() { return this._transport.sendRequest({ name: 'is-audio-available' }); } /** * Returns Promise that resolves with true if the device change is available * and with false if not. * * @param {string} [deviceType] - Values - 'output', 'input' or undefined. * Default - 'input'. * @returns {Promise} */ isDeviceChangeAvailable(deviceType) { return isDeviceChangeAvailable(this._transport, deviceType); } /** * Returns Promise that resolves with true if the device list is available * and with false if not. * * @returns {Promise} */ isDeviceListAvailable() { return isDeviceListAvailable(this._transport); } /** * Returns Promise that resolves with true if multiple audio input is supported * and with false if not. * * @returns {Promise} */ isMultipleAudioInputSupported() { return isMultipleAudioInputSupported(this._transport); } /** * Invite people to the call. * * @param {Array} invitees - The invitees. * @returns {Promise} - Resolves on success and rejects on failure. */ invite(invitees) { if (!Array.isArray(invitees) || invitees.length === 0) { return Promise.reject(new TypeError('Invalid Argument')); } return this._transport.sendRequest({ name: 'invite', invitees }); } /** * Returns the audio mute status. * * @returns {Promise} - Resolves with the audio mute status and rejects on * failure. */ isAudioMuted() { return this._transport.sendRequest({ name: 'is-audio-muted' }); } /** * Returns the avatar URL of a participant. * * @param {string} participantId - The id of the participant. * @returns {string} The avatar URL. */ getAvatarURL(participantId) { const { avatarURL } = this._participants[participantId] || {}; return avatarURL; } /** * Returns the display name of a participant. * * @param {string} participantId - The id of the participant. * @returns {string} The display name. */ getDisplayName(participantId) { const { displayName } = this._participants[participantId] || {}; return displayName; } /** * Returns the email of a participant. * * @param {string} participantId - The id of the participant. * @returns {string} The email. */ getEmail(participantId) { const { email } = this._participants[participantId] || {}; return email; } /** * Returns the formatted display name of a participant. * * @param {string} participantId - The id of the participant. * @returns {string} The formatted display name. */ _getFormattedDisplayName(participantId) { const { formattedDisplayName } = this._participants[participantId] || {}; return formattedDisplayName; } /** * Returns the iframe that loads Jitsi Meet. * * @returns {HTMLElement} The iframe. */ getIFrame() { return this._frame; } /** * Returns the number of participants in the conference. The local * participant is included. * * @returns {int} The number of participants in the conference. */ getNumberOfParticipants() { return this._numberOfParticipants; } /** * Check if the video is available. * * @returns {Promise} - Resolves with true if the video available, with * false if not and rejects on failure. */ isVideoAvailable() { return this._transport.sendRequest({ name: 'is-video-available' }); } /** * Returns the audio mute status. * * @returns {Promise} - Resolves with the audio mute status and rejects on * failure. */ isVideoMuted() { return this._transport.sendRequest({ name: 'is-video-muted' }); } /** * Removes event listener. * * @param {string} event - The name of the event. * @returns {void} * * @deprecated * NOTE: This method is not removed for backward comatability purposes. */ removeEventListener(event) { this.removeAllListeners(event); } /** * Removes event listeners. * * @param {Array} eventList - Array with the names of the events. * @returns {void} * * @deprecated * NOTE: This method is not removed for backward comatability purposes. */ removeEventListeners(eventList) { eventList.forEach(event => this.removeEventListener(event)); } /** * Passes an event along to the local conference participant to establish * or update a direct peer connection. This is currently used for developing * wireless screensharing with room integration and it is advised against to * use as its api may change. * * @param {Object} event - An object with information to pass along. * @param {Object} event.data - The payload of the event. * @param {string} event.from - The jid of the sender of the event. Needed * when a reply is to be sent regarding the event. * @returns {void} */ sendProxyConnectionEvent(event) { this._transport.sendEvent({ data: [ event ], name: 'proxy-connection-event' }); } /** * Sets the audio input device to the one with the label or id that is * passed. * * @param {string} label - The label of the new device. * @param {string} deviceId - The id of the new device. * @returns {Promise} */ setAudioInputDevice(label, deviceId) { return setAudioInputDevice(this._transport, label, deviceId); } /** * Sets the audio output device to the one with the label or id that is * passed. * * @param {string} label - The label of the new device. * @param {string} deviceId - The id of the new device. * @returns {Promise} */ setAudioOutputDevice(label, deviceId) { return setAudioOutputDevice(this._transport, label, deviceId); } /** * Sets the video input device to the one with the label or id that is * passed. * * @param {string} label - The label of the new device. * @param {string} deviceId - The id of the new device. * @returns {Promise} */ setVideoInputDevice(label, deviceId) { return setVideoInputDevice(this._transport, label, deviceId); } /** * Returns the configuration for electron for the windows that are open * from Jitsi Meet. * * @returns {Promise} * * NOTE: For internal use only. */ _getElectronPopupsConfig() { return Promise.resolve(electronPopupsConfig); } }