owncast/webroot/js/utils.js
Gabe Kangas df04af0f38
Websocket refactor: Pull it out of the UI and support callbacks (#104)
* Websocket refactor: Pull it out of the UI and support listeners

* Changes required for Safari to be happy with modules

* Move to explicit ad-hoc callback registration
2020-08-06 10:55:33 -07:00

125 lines
3.4 KiB
JavaScript

const LOCAL_TEST = window.location.href.indexOf('localhost:') >= 0;
const URL_PREFIX = LOCAL_TEST ? 'http://localhost:8080' : '';
const POSTER_DEFAULT = `${URL_PREFIX}/img/logo.png`;
const POSTER_THUMB = `${URL_PREFIX}/thumbnail.jpg`;
const URL_OWNCAST = 'https://github.com/gabek/owncast'; // used in footer
function getLocalStorage(key) {
try {
return localStorage.getItem(key);
} catch (e) {
}
return null;
}
function setLocalStorage(key, value) {
try {
if (value !== "" && value !== null) {
localStorage.setItem(key, value);
} else {
localStorage.removeItem(key);
}
return true;
} catch (e) {}
return false;
}
function clearLocalStorage(key) {
localStorage.removeItem(key);
}
// jump down to the max height of a div, with a slight delay
function jumpToBottom(element) {
if (!element) return;
setTimeout(() => {
element.scrollTo({
top: element.scrollHeight,
left: 0,
behavior: 'smooth'
});
}, 50, element);
}
// convert newlines to <br>s
function addNewlines(str) {
return str.replace(/(?:\r\n|\r|\n)/g, '<br />');
}
function pluralize(string, count) {
if (count === 1) {
return string;
} else {
return string + "s";
}
}
// Trying to determine if browser is mobile/tablet.
// Source: https://developer.mozilla.org/en-US/docs/Web/HTTP/Browser_detection_using_the_user_agent
function hasTouchScreen() {
var hasTouchScreen = false;
if ("maxTouchPoints" in navigator) {
hasTouchScreen = navigator.maxTouchPoints > 0;
} else if ("msMaxTouchPoints" in navigator) {
hasTouchScreen = navigator.msMaxTouchPoints > 0;
} else {
var mQ = window.matchMedia && matchMedia("(pointer:coarse)");
if (mQ && mQ.media === "(pointer:coarse)") {
hasTouchScreen = !!mQ.matches;
} else if ('orientation' in window) {
hasTouchScreen = true; // deprecated, but good fallback
} else {
// Only as a last resort, fall back to user agent sniffing
var UA = navigator.userAgent;
hasTouchScreen = (
/\b(BlackBerry|webOS|iPhone|IEMobile)\b/i.test(UA) ||
/\b(Android|Windows Phone|iPad|iPod)\b/i.test(UA)
);
}
}
return hasTouchScreen;
}
// generate random avatar from https://robohash.org
function generateAvatar(hash) {
const avatarSource = 'https://robohash.org/';
const optionSize = '?size=80x80';
const optionSet = '&set=set3';
const optionBg = ''; // or &bgset=bg1 or bg2
return avatarSource + hash + optionSize + optionSet + optionBg;
}
function generateUsername() {
return `User ${(Math.floor(Math.random() * 42) + 1)}`;
}
function secondsToHMMSS(seconds = 0) {
const finiteSeconds = Number.isFinite(+seconds) ? Math.abs(seconds) : 0;
const hours = Math.floor(finiteSeconds / 3600);
const hoursString = hours ? `${hours}:` : '';
const mins = Math.floor((finiteSeconds / 60) % 60);
const minString = mins < 10 ? `0${mins}:` : `${mins}:`;
const secs = Math.floor(finiteSeconds % 60);
const secsString = secs < 10 ? `0${secs}` : `${secs}`;
return hoursString + minString + secsString;
}
function setVHvar() {
var vh = window.innerHeight * 0.01;
// Then we set the value in the --vh custom property to the root of the document
document.documentElement.style.setProperty('--vh', `${vh}px`);
console.log("== new vh", vh)
}
function doesObjectSupportFunction(object, functionName) {
return typeof object[functionName] === "function";
}