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Set touchstart listener to 'passive', remove 'once' (#5011)

signup-info-prompt
Nolan Lawson 2017-09-19 08:00:29 -07:00 committed by Eugen Rochko
parent 7d16bb379d
commit e5c65b3067
1 changed files with 10 additions and 3 deletions
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13
app/javascript/mastodon/is_mobile.js
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@ -1,3 +1,5 @@
import detectPassiveEvents from 'detect-passive-events';
const LAYOUT_BREAKPOINT = 1024;
export function isMobile(width) {
@ -5,11 +7,16 @@ export function isMobile(width) {
};
const iOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
let userTouching = false;
window.addEventListener('touchstart', () => {
let userTouching = false;
let listenerOptions = detectPassiveEvents.hasSupport ? { passive: true } : false;
function touchListener() {
userTouching = true;
}, { once: true });
window.removeEventListener('touchstart', touchListener, listenerOptions);
}
window.addEventListener('touchstart', touchListener, listenerOptions);
export function isUserTouching() {
return userTouching;