783 lines
22 KiB
JavaScript
783 lines
22 KiB
JavaScript
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/*!
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* EventEmitter2
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* https://github.com/hij1nx/EventEmitter2
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*
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* Copyright (c) 2013 hij1nx
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* Licensed under the MIT license.
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*/
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;!function(undefined) {
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var isArray = Array.isArray ? Array.isArray : function _isArray(obj) {
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return Object.prototype.toString.call(obj) === "[object Array]";
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};
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var defaultMaxListeners = 10;
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function init() {
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this._events = {};
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if (this._conf) {
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configure.call(this, this._conf);
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}
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}
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function configure(conf) {
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if (conf) {
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this._conf = conf;
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conf.delimiter && (this.delimiter = conf.delimiter);
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this._maxListeners = conf.maxListeners !== undefined ? conf.maxListeners : defaultMaxListeners;
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conf.wildcard && (this.wildcard = conf.wildcard);
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conf.newListener && (this._newListener = conf.newListener);
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conf.removeListener && (this._removeListener = conf.removeListener);
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conf.verboseMemoryLeak && (this.verboseMemoryLeak = conf.verboseMemoryLeak);
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if (this.wildcard) {
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this.listenerTree = {};
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}
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} else {
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this._maxListeners = defaultMaxListeners;
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}
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}
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function logPossibleMemoryLeak(count, eventName) {
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var errorMsg = '(node) warning: possible EventEmitter memory ' +
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'leak detected. ' + count + ' listeners added. ' +
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'Use emitter.setMaxListeners() to increase limit.';
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if(this.verboseMemoryLeak){
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errorMsg += ' Event name: ' + eventName + '.';
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}
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if(typeof process !== 'undefined' && process.emitWarning){
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var e = new Error(errorMsg);
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e.name = 'MaxListenersExceededWarning';
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e.emitter = this;
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e.count = count;
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process.emitWarning(e);
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} else {
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console.error(errorMsg);
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if (console.trace){
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console.trace();
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}
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}
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}
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function EventEmitter(conf) {
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this._events = {};
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this._newListener = false;
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this._removeListener = false;
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this.verboseMemoryLeak = false;
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configure.call(this, conf);
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}
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EventEmitter.EventEmitter2 = EventEmitter; // backwards compatibility for exporting EventEmitter property
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//
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// Attention, function return type now is array, always !
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// It has zero elements if no any matches found and one or more
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// elements (leafs) if there are matches
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//
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function searchListenerTree(handlers, type, tree, i) {
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if (!tree) {
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return [];
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}
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var listeners=[], leaf, len, branch, xTree, xxTree, isolatedBranch, endReached,
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typeLength = type.length, currentType = type[i], nextType = type[i+1];
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if (i === typeLength && tree._listeners) {
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//
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// If at the end of the event(s) list and the tree has listeners
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// invoke those listeners.
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//
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if (typeof tree._listeners === 'function') {
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handlers && handlers.push(tree._listeners);
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return [tree];
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} else {
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for (leaf = 0, len = tree._listeners.length; leaf < len; leaf++) {
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handlers && handlers.push(tree._listeners[leaf]);
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}
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return [tree];
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}
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}
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if ((currentType === '*' || currentType === '**') || tree[currentType]) {
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//
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// If the event emitted is '*' at this part
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// or there is a concrete match at this patch
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//
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if (currentType === '*') {
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for (branch in tree) {
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if (branch !== '_listeners' && tree.hasOwnProperty(branch)) {
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listeners = listeners.concat(searchListenerTree(handlers, type, tree[branch], i+1));
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}
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}
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return listeners;
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} else if(currentType === '**') {
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endReached = (i+1 === typeLength || (i+2 === typeLength && nextType === '*'));
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if(endReached && tree._listeners) {
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// The next element has a _listeners, add it to the handlers.
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listeners = listeners.concat(searchListenerTree(handlers, type, tree, typeLength));
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}
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for (branch in tree) {
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if (branch !== '_listeners' && tree.hasOwnProperty(branch)) {
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if(branch === '*' || branch === '**') {
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if(tree[branch]._listeners && !endReached) {
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listeners = listeners.concat(searchListenerTree(handlers, type, tree[branch], typeLength));
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}
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listeners = listeners.concat(searchListenerTree(handlers, type, tree[branch], i));
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} else if(branch === nextType) {
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listeners = listeners.concat(searchListenerTree(handlers, type, tree[branch], i+2));
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} else {
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// No match on this one, shift into the tree but not in the type array.
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listeners = listeners.concat(searchListenerTree(handlers, type, tree[branch], i));
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}
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}
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}
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return listeners;
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}
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listeners = listeners.concat(searchListenerTree(handlers, type, tree[currentType], i+1));
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}
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xTree = tree['*'];
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if (xTree) {
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//
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// If the listener tree will allow any match for this part,
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// then recursively explore all branches of the tree
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//
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searchListenerTree(handlers, type, xTree, i+1);
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}
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xxTree = tree['**'];
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if(xxTree) {
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if(i < typeLength) {
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if(xxTree._listeners) {
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// If we have a listener on a '**', it will catch all, so add its handler.
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searchListenerTree(handlers, type, xxTree, typeLength);
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}
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// Build arrays of matching next branches and others.
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for(branch in xxTree) {
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if(branch !== '_listeners' && xxTree.hasOwnProperty(branch)) {
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if(branch === nextType) {
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// We know the next element will match, so jump twice.
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searchListenerTree(handlers, type, xxTree[branch], i+2);
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} else if(branch === currentType) {
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// Current node matches, move into the tree.
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searchListenerTree(handlers, type, xxTree[branch], i+1);
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} else {
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isolatedBranch = {};
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isolatedBranch[branch] = xxTree[branch];
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searchListenerTree(handlers, type, { '**': isolatedBranch }, i+1);
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}
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}
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}
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} else if(xxTree._listeners) {
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// We have reached the end and still on a '**'
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searchListenerTree(handlers, type, xxTree, typeLength);
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} else if(xxTree['*'] && xxTree['*']._listeners) {
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searchListenerTree(handlers, type, xxTree['*'], typeLength);
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}
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}
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return listeners;
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}
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function growListenerTree(type, listener) {
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type = typeof type === 'string' ? type.split(this.delimiter) : type.slice();
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//
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// Looks for two consecutive '**', if so, don't add the event at all.
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//
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for(var i = 0, len = type.length; i+1 < len; i++) {
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if(type[i] === '**' && type[i+1] === '**') {
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return;
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}
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}
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var tree = this.listenerTree;
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var name = type.shift();
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while (name !== undefined) {
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if (!tree[name]) {
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tree[name] = {};
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}
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tree = tree[name];
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if (type.length === 0) {
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if (!tree._listeners) {
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tree._listeners = listener;
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}
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else {
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if (typeof tree._listeners === 'function') {
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tree._listeners = [tree._listeners];
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}
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tree._listeners.push(listener);
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if (
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!tree._listeners.warned &&
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this._maxListeners > 0 &&
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tree._listeners.length > this._maxListeners
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) {
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tree._listeners.warned = true;
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logPossibleMemoryLeak.call(this, tree._listeners.length, name);
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}
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}
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return true;
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}
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name = type.shift();
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}
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return true;
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}
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// By default EventEmitters will print a warning if more than
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// 10 listeners are added to it. This is a useful default which
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// helps finding memory leaks.
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//
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// Obviously not all Emitters should be limited to 10. This function allows
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// that to be increased. Set to zero for unlimited.
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EventEmitter.prototype.delimiter = '.';
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EventEmitter.prototype.setMaxListeners = function(n) {
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if (n !== undefined) {
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this._maxListeners = n;
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if (!this._conf) this._conf = {};
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this._conf.maxListeners = n;
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}
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};
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EventEmitter.prototype.event = '';
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EventEmitter.prototype.once = function(event, fn) {
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return this._once(event, fn, false);
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};
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EventEmitter.prototype.prependOnceListener = function(event, fn) {
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return this._once(event, fn, true);
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};
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EventEmitter.prototype._once = function(event, fn, prepend) {
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this._many(event, 1, fn, prepend);
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return this;
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};
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EventEmitter.prototype.many = function(event, ttl, fn) {
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return this._many(event, ttl, fn, false);
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}
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EventEmitter.prototype.prependMany = function(event, ttl, fn) {
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return this._many(event, ttl, fn, true);
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}
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EventEmitter.prototype._many = function(event, ttl, fn, prepend) {
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var self = this;
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if (typeof fn !== 'function') {
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throw new Error('many only accepts instances of Function');
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}
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function listener() {
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if (--ttl === 0) {
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self.off(event, listener);
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}
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return fn.apply(this, arguments);
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}
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listener._origin = fn;
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this._on(event, listener, prepend);
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return self;
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};
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EventEmitter.prototype.emit = function() {
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this._events || init.call(this);
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var type = arguments[0];
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if (type === 'newListener' && !this._newListener) {
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if (!this._events.newListener) {
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return false;
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}
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}
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var al = arguments.length;
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var args,l,i,j;
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var handler;
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if (this._all && this._all.length) {
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handler = this._all.slice();
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if (al > 3) {
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args = new Array(al);
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for (j = 0; j < al; j++) args[j] = arguments[j];
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}
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for (i = 0, l = handler.length; i < l; i++) {
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this.event = type;
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switch (al) {
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case 1:
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handler[i].call(this, type);
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break;
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case 2:
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handler[i].call(this, type, arguments[1]);
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break;
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case 3:
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handler[i].call(this, type, arguments[1], arguments[2]);
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break;
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default:
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handler[i].apply(this, args);
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}
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}
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}
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if (this.wildcard) {
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handler = [];
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var ns = typeof type === 'string' ? type.split(this.delimiter) : type.slice();
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searchListenerTree.call(this, handler, ns, this.listenerTree, 0);
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} else {
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handler = this._events[type];
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if (typeof handler === 'function') {
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this.event = type;
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switch (al) {
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case 1:
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handler.call(this);
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break;
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case 2:
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handler.call(this, arguments[1]);
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break;
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case 3:
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handler.call(this, arguments[1], arguments[2]);
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break;
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default:
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args = new Array(al - 1);
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for (j = 1; j < al; j++) args[j - 1] = arguments[j];
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handler.apply(this, args);
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}
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return true;
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} else if (handler) {
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// need to make copy of handlers because list can change in the middle
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// of emit call
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handler = handler.slice();
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}
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}
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if (handler && handler.length) {
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if (al > 3) {
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args = new Array(al - 1);
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for (j = 1; j < al; j++) args[j - 1] = arguments[j];
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}
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for (i = 0, l = handler.length; i < l; i++) {
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this.event = type;
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switch (al) {
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case 1:
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handler[i].call(this);
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break;
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case 2:
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handler[i].call(this, arguments[1]);
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break;
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case 3:
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handler[i].call(this, arguments[1], arguments[2]);
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break;
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default:
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handler[i].apply(this, args);
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}
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}
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return true;
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||
|
|
} else if (!this._all && type === 'error') {
|
||
|
|
if (arguments[1] instanceof Error) {
|
||
|
|
throw arguments[1]; // Unhandled 'error' event
|
||
|
|
} else {
|
||
|
|
throw new Error("Uncaught, unspecified 'error' event.");
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return !!this._all;
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.emitAsync = function() {
|
||
|
|
|
||
|
|
this._events || init.call(this);
|
||
|
|
|
||
|
|
var type = arguments[0];
|
||
|
|
|
||
|
|
if (type === 'newListener' && !this._newListener) {
|
||
|
|
if (!this._events.newListener) { return Promise.resolve([false]); }
|
||
|
|
}
|
||
|
|
|
||
|
|
var promises= [];
|
||
|
|
|
||
|
|
var al = arguments.length;
|
||
|
|
var args,l,i,j;
|
||
|
|
var handler;
|
||
|
|
|
||
|
|
if (this._all) {
|
||
|
|
if (al > 3) {
|
||
|
|
args = new Array(al);
|
||
|
|
for (j = 1; j < al; j++) args[j] = arguments[j];
|
||
|
|
}
|
||
|
|
for (i = 0, l = this._all.length; i < l; i++) {
|
||
|
|
this.event = type;
|
||
|
|
switch (al) {
|
||
|
|
case 1:
|
||
|
|
promises.push(this._all[i].call(this, type));
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
promises.push(this._all[i].call(this, type, arguments[1]));
|
||
|
|
break;
|
||
|
|
case 3:
|
||
|
|
promises.push(this._all[i].call(this, type, arguments[1], arguments[2]));
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
promises.push(this._all[i].apply(this, args));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this.wildcard) {
|
||
|
|
handler = [];
|
||
|
|
var ns = typeof type === 'string' ? type.split(this.delimiter) : type.slice();
|
||
|
|
searchListenerTree.call(this, handler, ns, this.listenerTree, 0);
|
||
|
|
} else {
|
||
|
|
handler = this._events[type];
|
||
|
|
}
|
||
|
|
|
||
|
|
if (typeof handler === 'function') {
|
||
|
|
this.event = type;
|
||
|
|
switch (al) {
|
||
|
|
case 1:
|
||
|
|
promises.push(handler.call(this));
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
promises.push(handler.call(this, arguments[1]));
|
||
|
|
break;
|
||
|
|
case 3:
|
||
|
|
promises.push(handler.call(this, arguments[1], arguments[2]));
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
args = new Array(al - 1);
|
||
|
|
for (j = 1; j < al; j++) args[j - 1] = arguments[j];
|
||
|
|
promises.push(handler.apply(this, args));
|
||
|
|
}
|
||
|
|
} else if (handler && handler.length) {
|
||
|
|
handler = handler.slice();
|
||
|
|
if (al > 3) {
|
||
|
|
args = new Array(al - 1);
|
||
|
|
for (j = 1; j < al; j++) args[j - 1] = arguments[j];
|
||
|
|
}
|
||
|
|
for (i = 0, l = handler.length; i < l; i++) {
|
||
|
|
this.event = type;
|
||
|
|
switch (al) {
|
||
|
|
case 1:
|
||
|
|
promises.push(handler[i].call(this));
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
promises.push(handler[i].call(this, arguments[1]));
|
||
|
|
break;
|
||
|
|
case 3:
|
||
|
|
promises.push(handler[i].call(this, arguments[1], arguments[2]));
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
promises.push(handler[i].apply(this, args));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else if (!this._all && type === 'error') {
|
||
|
|
if (arguments[1] instanceof Error) {
|
||
|
|
return Promise.reject(arguments[1]); // Unhandled 'error' event
|
||
|
|
} else {
|
||
|
|
return Promise.reject("Uncaught, unspecified 'error' event.");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return Promise.all(promises);
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.on = function(type, listener) {
|
||
|
|
return this._on(type, listener, false);
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.prependListener = function(type, listener) {
|
||
|
|
return this._on(type, listener, true);
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.onAny = function(fn) {
|
||
|
|
return this._onAny(fn, false);
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.prependAny = function(fn) {
|
||
|
|
return this._onAny(fn, true);
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.addListener = EventEmitter.prototype.on;
|
||
|
|
|
||
|
|
EventEmitter.prototype._onAny = function(fn, prepend){
|
||
|
|
if (typeof fn !== 'function') {
|
||
|
|
throw new Error('onAny only accepts instances of Function');
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!this._all) {
|
||
|
|
this._all = [];
|
||
|
|
}
|
||
|
|
|
||
|
|
// Add the function to the event listener collection.
|
||
|
|
if(prepend){
|
||
|
|
this._all.unshift(fn);
|
||
|
|
}else{
|
||
|
|
this._all.push(fn);
|
||
|
|
}
|
||
|
|
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
EventEmitter.prototype._on = function(type, listener, prepend) {
|
||
|
|
if (typeof type === 'function') {
|
||
|
|
this._onAny(type, listener);
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (typeof listener !== 'function') {
|
||
|
|
throw new Error('on only accepts instances of Function');
|
||
|
|
}
|
||
|
|
this._events || init.call(this);
|
||
|
|
|
||
|
|
// To avoid recursion in the case that type == "newListeners"! Before
|
||
|
|
// adding it to the listeners, first emit "newListeners".
|
||
|
|
if (this._newListener)
|
||
|
|
this.emit('newListener', type, listener);
|
||
|
|
|
||
|
|
if (this.wildcard) {
|
||
|
|
growListenerTree.call(this, type, listener);
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!this._events[type]) {
|
||
|
|
// Optimize the case of one listener. Don't need the extra array object.
|
||
|
|
this._events[type] = listener;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
if (typeof this._events[type] === 'function') {
|
||
|
|
// Change to array.
|
||
|
|
this._events[type] = [this._events[type]];
|
||
|
|
}
|
||
|
|
|
||
|
|
// If we've already got an array, just add
|
||
|
|
if(prepend){
|
||
|
|
this._events[type].unshift(listener);
|
||
|
|
}else{
|
||
|
|
this._events[type].push(listener);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Check for listener leak
|
||
|
|
if (
|
||
|
|
!this._events[type].warned &&
|
||
|
|
this._maxListeners > 0 &&
|
||
|
|
this._events[type].length > this._maxListeners
|
||
|
|
) {
|
||
|
|
this._events[type].warned = true;
|
||
|
|
logPossibleMemoryLeak.call(this, this._events[type].length, type);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
EventEmitter.prototype.off = function(type, listener) {
|
||
|
|
if (typeof listener !== 'function') {
|
||
|
|
throw new Error('removeListener only takes instances of Function');
|
||
|
|
}
|
||
|
|
|
||
|
|
var handlers,leafs=[];
|
||
|
|
|
||
|
|
if(this.wildcard) {
|
||
|
|
var ns = typeof type === 'string' ? type.split(this.delimiter) : type.slice();
|
||
|
|
leafs = searchListenerTree.call(this, null, ns, this.listenerTree, 0);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
// does not use listeners(), so no side effect of creating _events[type]
|
||
|
|
if (!this._events[type]) return this;
|
||
|
|
handlers = this._events[type];
|
||
|
|
leafs.push({_listeners:handlers});
|
||
|
|
}
|
||
|
|
|
||
|
|
for (var iLeaf=0; iLeaf<leafs.length; iLeaf++) {
|
||
|
|
var leaf = leafs[iLeaf];
|
||
|
|
handlers = leaf._listeners;
|
||
|
|
if (isArray(handlers)) {
|
||
|
|
|
||
|
|
var position = -1;
|
||
|
|
|
||
|
|
for (var i = 0, length = handlers.length; i < length; i++) {
|
||
|
|
if (handlers[i] === listener ||
|
||
|
|
(handlers[i].listener && handlers[i].listener === listener) ||
|
||
|
|
(handlers[i]._origin && handlers[i]._origin === listener)) {
|
||
|
|
position = i;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (position < 0) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(this.wildcard) {
|
||
|
|
leaf._listeners.splice(position, 1);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
this._events[type].splice(position, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (handlers.length === 0) {
|
||
|
|
if(this.wildcard) {
|
||
|
|
delete leaf._listeners;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
delete this._events[type];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (this._removeListener)
|
||
|
|
this.emit("removeListener", type, listener);
|
||
|
|
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
else if (handlers === listener ||
|
||
|
|
(handlers.listener && handlers.listener === listener) ||
|
||
|
|
(handlers._origin && handlers._origin === listener)) {
|
||
|
|
if(this.wildcard) {
|
||
|
|
delete leaf._listeners;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
delete this._events[type];
|
||
|
|
}
|
||
|
|
if (this._removeListener)
|
||
|
|
this.emit("removeListener", type, listener);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function recursivelyGarbageCollect(root) {
|
||
|
|
if (root === undefined) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
var keys = Object.keys(root);
|
||
|
|
for (var i in keys) {
|
||
|
|
var key = keys[i];
|
||
|
|
var obj = root[key];
|
||
|
|
if ((obj instanceof Function) || (typeof obj !== "object") || (obj === null))
|
||
|
|
continue;
|
||
|
|
if (Object.keys(obj).length > 0) {
|
||
|
|
recursivelyGarbageCollect(root[key]);
|
||
|
|
}
|
||
|
|
if (Object.keys(obj).length === 0) {
|
||
|
|
delete root[key];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
recursivelyGarbageCollect(this.listenerTree);
|
||
|
|
|
||
|
|
return this;
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.offAny = function(fn) {
|
||
|
|
var i = 0, l = 0, fns;
|
||
|
|
if (fn && this._all && this._all.length > 0) {
|
||
|
|
fns = this._all;
|
||
|
|
for(i = 0, l = fns.length; i < l; i++) {
|
||
|
|
if(fn === fns[i]) {
|
||
|
|
fns.splice(i, 1);
|
||
|
|
if (this._removeListener)
|
||
|
|
this.emit("removeListenerAny", fn);
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
fns = this._all;
|
||
|
|
if (this._removeListener) {
|
||
|
|
for(i = 0, l = fns.length; i < l; i++)
|
||
|
|
this.emit("removeListenerAny", fns[i]);
|
||
|
|
}
|
||
|
|
this._all = [];
|
||
|
|
}
|
||
|
|
return this;
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.removeListener = EventEmitter.prototype.off;
|
||
|
|
|
||
|
|
EventEmitter.prototype.removeAllListeners = function(type) {
|
||
|
|
if (type === undefined) {
|
||
|
|
!this._events || init.call(this);
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this.wildcard) {
|
||
|
|
var ns = typeof type === 'string' ? type.split(this.delimiter) : type.slice();
|
||
|
|
var leafs = searchListenerTree.call(this, null, ns, this.listenerTree, 0);
|
||
|
|
|
||
|
|
for (var iLeaf=0; iLeaf<leafs.length; iLeaf++) {
|
||
|
|
var leaf = leafs[iLeaf];
|
||
|
|
leaf._listeners = null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (this._events) {
|
||
|
|
this._events[type] = null;
|
||
|
|
}
|
||
|
|
return this;
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.listeners = function(type) {
|
||
|
|
if (this.wildcard) {
|
||
|
|
var handlers = [];
|
||
|
|
var ns = typeof type === 'string' ? type.split(this.delimiter) : type.slice();
|
||
|
|
searchListenerTree.call(this, handlers, ns, this.listenerTree, 0);
|
||
|
|
return handlers;
|
||
|
|
}
|
||
|
|
|
||
|
|
this._events || init.call(this);
|
||
|
|
|
||
|
|
if (!this._events[type]) this._events[type] = [];
|
||
|
|
if (!isArray(this._events[type])) {
|
||
|
|
this._events[type] = [this._events[type]];
|
||
|
|
}
|
||
|
|
return this._events[type];
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.eventNames = function(){
|
||
|
|
return Object.keys(this._events);
|
||
|
|
}
|
||
|
|
|
||
|
|
EventEmitter.prototype.listenerCount = function(type) {
|
||
|
|
return this.listeners(type).length;
|
||
|
|
};
|
||
|
|
|
||
|
|
EventEmitter.prototype.listenersAny = function() {
|
||
|
|
|
||
|
|
if(this._all) {
|
||
|
|
return this._all;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
return [];
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
if (typeof define === 'function' && define.amd) {
|
||
|
|
// AMD. Register as an anonymous module.
|
||
|
|
define(function() {
|
||
|
|
return EventEmitter;
|
||
|
|
});
|
||
|
|
} else if (typeof exports === 'object') {
|
||
|
|
// CommonJS
|
||
|
|
module.exports = EventEmitter;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
// Browser global.
|
||
|
|
window.EventEmitter2 = EventEmitter;
|
||
|
|
}
|
||
|
|
}();
|