| 1 |
|
| 2 | const EVENTS = {};
|
| 3 |
|
| 4 | export default {
|
| 5 |
|
| 6 | get events () { return EVENTS; },
|
| 7 |
|
| 8 | on (name, method) {
|
| 9 |
|
| 10 | if (!(name in this.events)) {
|
| 11 | this.events[name] = [];
|
| 12 | }
|
| 13 |
|
| 14 | this.events[name].push(method);
|
| 15 | },
|
| 16 |
|
| 17 | off (name, method) {
|
| 18 |
|
| 19 | if (name in this.events) {
|
| 20 |
|
| 21 | let index = this.events[name].indexOf(method);
|
| 22 |
|
| 23 | if (index !== -1) {
|
| 24 | this.events[name].splice(index, 1);
|
| 25 | }
|
| 26 |
|
| 27 | }
|
| 28 |
|
| 29 | },
|
| 30 |
|
| 31 | emit (name) {
|
| 32 |
|
| 33 | if (name in this.events) {
|
| 34 |
|
| 35 | const methods = this.events[name];
|
| 36 | const args = Array.prototype.slice.call(arguments, 2);
|
| 37 |
|
| 38 | Promise.all(methods.map(function (method) {
|
| 39 | return method.apply(this, args);
|
| 40 | })).catch(console.error);
|
| 41 |
|
| 42 | }
|
| 43 |
|
| 44 | }
|
| 45 |
|
| 46 | };
|