1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.emitter = factory());
}(this, (function () { 'use strict';
function emitter(context, options) {
var _events = {}, o = options || {}, _constantEvents = {}, noop = function(){};
function invoke(handler, args){
window.setTimeout(function () {
handler.apply(context, args);
});
}
function emit(event) {
var handlers = (_events[event] || (_events[event] = []));
if (!handlers){
return;
}
var args = Array.prototype.slice.call(arguments, 1);
if (o.emitting) {
o.emitting({ event: event, data: args, context: context });
}
for (var i = 0, l = handlers.length; i < l; i++) {
invoke(handlers[i], args);
}
}
function replay (event) {
var args = Array.prototype.slice.call(arguments, 1);
_constantEvents[event] = args;
emit.apply(null, arguments);
}
function on(event, fn) {
if (_constantEvents[event]){
invoke(fn, _constantEvents[event]);
return noop;
}
var handlers = (_events[event] || (_events[event] = []));
handlers.push(fn);
return function () {
off(event, fn);
};
}
function off(event, fn) {
var handlers = _events[event], i, h;
if (!handlers) {
return;
}
if (Array.isArray(event)) {
for (i = 0, l = event.length; i < l; i++) {
off(event[i], fn);
}
return;
}
i = handlers.length;
while(i--) {
h = handlers[i];
if (fn === h){
handlers.splice(i, 1);
break;
}
}
}
function once(event, fn) {
var unsub = on(event, function () {
fn.apply(context, arguments);
unsub();
});
return unsub;
}
return {
on: on,
off: off,
emit: emit,
once: once,
replay: replay
};
}
return emitter;
})));
|
