Server : Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips PHP/7.4.20 System : Linux st2.domain.com 3.10.0-1127.10.1.el7.x86_64 #1 SMP Wed Jun 3 14:28:03 UTC 2020 x86_64 User : apache ( 48) PHP Version : 7.4.20 Disable Function : NONE Directory : /var/www/html/video/layout/js/node_modules/artplayer/src/utils/ |
export default class Emitter {
on(name, fn, ctx) {
const e = this.e || (this.e = {});
(e[name] || (e[name] = [])).push({ fn, ctx });
return this;
}
once(name, fn, ctx) {
const self = this;
function listener(...args) {
self.off(name, listener);
fn.apply(ctx, args);
}
listener._ = fn;
return this.on(name, listener, ctx);
}
emit(name, ...data) {
const evtArr = ((this.e || (this.e = {}))[name] || []).slice();
for (let i = 0; i < evtArr.length; i += 1) {
evtArr[i].fn.apply(evtArr[i].ctx, data);
}
return this;
}
off(name, callback) {
const e = this.e || (this.e = {});
const evts = e[name];
const liveEvents = [];
if (evts && callback) {
for (let i = 0, len = evts.length; i < len; i += 1) {
if (evts[i].fn !== callback && evts[i].fn._ !== callback) liveEvents.push(evts[i]);
}
}
if (liveEvents.length) {
e[name] = liveEvents;
} else {
delete e[name];
}
return this;
}
}