96 lines
2.3 KiB
JavaScript
96 lines
2.3 KiB
JavaScript
import { REFRESH_INFO_FREQUENCY } from "../const";
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const REFRESH_INTERVAL = 1000 / REFRESH_INFO_FREQUENCY;
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/**
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* Class the handle the information about the whiteboard
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*/
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class InfoService {
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/**
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* @type {boolean}
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* @private
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*/
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_infoAreDisplayed = false;
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/**
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* Holds the number of user connected to the server
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*
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* @type {number}
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* @private
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*/
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_nbConnectedUsers = 0;
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/**
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* @type {number}
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* @private
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*/
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_nbMessagesSent = 0;
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/**
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* @type {number}
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* @private
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*/
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_nbMessagesReceived = 0;
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/**
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* Holds the interval Id
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* @type {number}
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* @private
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*/
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_refreshInfoIntervalId = undefined;
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/**
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* @param {number} nbConnectedUsers
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*/
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updateInfoFromServer({ nbConnectedUsers }) {
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this._nbConnectedUsers = nbConnectedUsers;
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}
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incrementNbMessagesReceived() {
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this._nbMessagesReceived++;
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}
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incrementNbMessagesSent() {
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this._nbMessagesSent++;
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}
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refreshDisplayedInfo() {
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$("#messageReceivedCount")[0].innerText = String(this._nbMessagesReceived);
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$("#messageSentCount")[0].innerText = String(this._nbMessagesSent);
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$("#connectedUsersCount")[0].innerText = String(this._nbConnectedUsers);
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}
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displayInfo() {
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$("#whiteboardInfoContainer").toggleClass("displayNone", false);
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$("#displayWhiteboardInfoBtn").toggleClass("active", true);
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this._infoAreDisplayed = true;
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this.refreshDisplayedInfo();
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this._refreshInfoIntervalId = setInterval(() => {
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// refresh only on a specific interval to reduce
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// refreshing cost
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this.refreshDisplayedInfo();
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}, REFRESH_INTERVAL);
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}
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hideInfo() {
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$("#whiteboardInfoContainer").toggleClass("displayNone", true);
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$("#displayWhiteboardInfoBtn").toggleClass("active", false);
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this._infoAreDisplayed = false;
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if (this._refreshInfoIntervalId) {
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clearInterval(this._refreshInfoIntervalId);
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this._refreshInfoIntervalId = undefined;
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}
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}
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toggleDisplayInfo() {
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if (this._infoAreDisplayed) {
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this.hideInfo();
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} else {
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this.displayInfo();
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}
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}
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}
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export default new InfoService();
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