Spaces:
Runtime error
Runtime error
File size: 3,864 Bytes
b82d373 |
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 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 |
/* Polyfill indexOf. */
var indexOf;
if (typeof Array.prototype.indexOf === 'function') {
indexOf = function (haystack, needle) {
return haystack.indexOf(needle);
};
} else {
indexOf = function (haystack, needle) {
var i = 0, length = haystack.length, idx = -1, found = false;
while (i < length && !found) {
if (haystack[i] === needle) {
idx = i;
found = true;
}
i++;
}
return idx;
};
};
/* Polyfill EventEmitter. */
var EventEmitter = function () {
this.events = {};
};
EventEmitter.prototype.on = function (event, listener) {
// Unknown event used by external libraries?
if (event === undefined) {
console.trace('EventEmitter: Cannot listen to undefined event');
return;
}
if (typeof this.events[event] !== 'object') {
this.events[event] = [];
}
this.events[event].push(listener);
};
/**
* Makes the listener the last to be called when the event is emitted
* @param {string} event Event name
* @param {function} listener Event listener
*/
EventEmitter.prototype.makeLast = function (event, listener) {
if (typeof this.events[event] !== 'object') {
this.events[event] = [];
}
const events = this.events[event];
const idx = events.indexOf(listener);
if (idx > -1) {
events.splice(idx, 1);
}
events.push(listener);
}
/**
* Makes the listener the first to be called when the event is emitted
* @param {string} event Event name
* @param {function} listener Event listener
*/
EventEmitter.prototype.makeFirst = function (event, listener) {
if (typeof this.events[event] !== 'object') {
this.events[event] = [];
}
const events = this.events[event];
const idx = events.indexOf(listener);
if (idx > -1) {
events.splice(idx, 1);
}
events.unshift(listener);
}
EventEmitter.prototype.removeListener = function (event, listener) {
var idx;
if (typeof this.events[event] === 'object') {
idx = indexOf(this.events[event], listener);
if (idx > -1) {
this.events[event].splice(idx, 1);
}
}
};
EventEmitter.prototype.emit = async function (event) {
if (localStorage.getItem('eventTracing') === 'true') {
console.trace('Event emitted: ' + event, args);
} else {
console.debug('Event emitted: ' + event);
}
var i, listeners, length, args = [].slice.call(arguments, 1);
if (typeof this.events[event] === 'object') {
listeners = this.events[event].slice();
length = listeners.length;
for (i = 0; i < length; i++) {
try {
await listeners[i].apply(this, args);
}
catch (err) {
console.error(err);
console.trace('Error in event listener');
}
}
}
};
EventEmitter.prototype.emitAndWait = function (event) {
if (localStorage.getItem('eventTracing') === 'true') {
console.trace('Event emitted: ' + event, args);
} else {
console.debug('Event emitted: ' + event);
}
var i, listeners, length, args = [].slice.call(arguments, 1);
if (typeof this.events[event] === 'object') {
listeners = this.events[event].slice();
length = listeners.length;
for (i = 0; i < length; i++) {
try {
listeners[i].apply(this, args);
}
catch (err) {
console.error(err);
console.trace('Error in event listener');
}
}
}
};
EventEmitter.prototype.once = function (event, listener) {
this.on(event, function g () {
this.removeListener(event, g);
listener.apply(this, arguments);
});
};
export { EventEmitter }
|