https://web.rosknroll.fi/rosknroll/js/globalize/cldr/event.js

1/**
2 * CLDR JavaScript Library v0.4.3
3 * http://jquery.com/
4 *
5 * Copyright 2013 Rafael Xavier de Souza
6 * Released under the MIT license
7 * http://jquery.org/license
8 *
9 * Date: 2015-08-24T01:00Z
10 */
11/*!
12 * CLDR JavaScript Library v0.4.3 2015-08-24T01:00Z MIT license © Rafael Xavier
13 * http://git.io/h4lmVg
14 */
15(function( factory ) {
16
17	if ( typeof define === "function" && define.amd ) {
18		// AMD.
19		define( [ "../cldr" ], factory );
20	} else if ( typeof module === "object" && typeof module.exports === "object" ) {
21		// Node. CommonJS.
22		module.exports = factory( require( "cldrjs" ) );
23	} else {
24		// Global
25		factory( Cldr );
26	}
27
28}(function( Cldr ) {
29
30	// Build optimization hack to avoid duplicating functions across modules.
31	var pathNormalize = Cldr._pathNormalize,
32		validatePresence = Cldr._validatePresence,
33		validateType = Cldr._validateType;
34
35/*!
36 * EventEmitter v4.2.7 - git.io/ee
37 * Oliver Caldwell
38 * MIT license
39 * @preserve
40 */
41
42var EventEmitter;
43/* jshint ignore:start */
44EventEmitter = (function () {
45	
46
47	/**
48	 * Class for managing events.
49	 * Can be extended to provide event functionality in other classes.
50	 *
51	 * @class EventEmitter Manages event registering and emitting.
52	 */
53	function EventEmitter() {}
54
55	// Shortcuts to improve speed and size
56	var proto = EventEmitter.prototype;
57	var exports = this;
58	var originalGlobalValue = exports.EventEmitter;
59
60	/**
61	 * Finds the index of the listener for the event in it's storage array.
62	 *
63	 * @param {Function[]} listeners Array of listeners to search through.
64	 * @param {Function} listener Method to look for.
65	 * @return {Number} Index of the specified listener, -1 if not found
66	 * @api private
67	 */
68	function indexOfListener(listeners, listener) {
69		var i = listeners.length;
70		while (i--) {
71			if (listeners[i].listener === listener) {
72				return i;
73			}
74		}
75
76		return -1;
77	}
78
79	/**
80	 * Alias a method while keeping the context correct, to allow for overwriting of target method.
81	 *
82	 * @param {String} name The name of the target method.
83	 * @return {Function} The aliased method
84	 * @api private
85	 */
86	function alias(name) {
87		return function aliasClosure() {
88			return this[name].apply(this, arguments);
89		};
90	}
91
92	/**
93	 * Returns the listener array for the specified event.
94	 * Will initialise the event object and listener arrays if required.
95	 * Will return an object if you use a regex search. The object contains keys for each matched event. So /ba[rz]/ might return an object containing bar and baz. But only if you have either defined them with defineEvent or added some listeners to them.
96	 * Each property in the object response is an array of listener functions.
97	 *
98	 * @param {String|RegExp} evt Name of the event to return the listeners from.
99	 * @return {Function[]|Object} All listener functions for the event.
100	 */
101	proto.getListeners = function getListeners(evt) {
102		var events = this._getEvents();
103		var response;
104		var key;
105
106		// Return a concatenated array of all matching events if
107		// the selector is a regular expression.
108		if (evt instanceof RegExp) {
109			response = {};
110			for (key in events) {
111				if (events.hasOwnProperty(key) && evt.test(key)) {
112					response[key] = events[key];
113				}
114			}
115		}
116		else {
117			response = events[evt] || (events[evt] = []);
118		}
119
120		return response;
121	};
122
123	/**
124	 * Takes a list of listener objects and flattens it into a list of listener functions.
125	 *
126	 * @param {Object[]} listeners Raw listener objects.
127	 * @return {Function[]} Just the listener functions.
128	 */
129	proto.flattenListeners = function flattenListeners(listeners) {
130		var flatListeners = [];
131		var i;
132
133		for (i = 0; i < listeners.length; i += 1) {
134			flatListeners.push(listeners[i].listener);
135		}
136
137		return flatListeners;
138	};
139
140	/**
141	 * Fetches the requested listeners via getListeners but will always return the results inside an object. This is mainly for internal use but others may find it useful.
142	 *
143	 * @param {String|RegExp} evt Name of the event to return the listeners from.
144	 * @return {Object} All listener functions for an event in an object.
145	 */
146	proto.getListenersAsObject = function getListenersAsObject(evt) {
147		var listeners = this.getListeners(evt);
148		var response;
149
150		if (listeners instanceof Array) {
151			response = {};
152			response[evt] = listeners;
153		}
154
155		return response || listeners;
156	};
157
158	/**
159	 * Adds a listener function to the specified event.
160	 * The listener will not be added if it is a duplicate.
161	 * If the listener returns true then it will be removed after it is called.
162	 * If you pass a regular expression as the event name then the listener will be added to all events that match it.
163	 *
164	 * @param {String|RegExp} evt Name of the event to attach the listener to.
165	 * @param {Function} listener Method to be called when the event is emitted. If the function returns true then it will be removed after calling.
166	 * @return {Object} Current instance of EventEmitter for chaining.
167	 */
168	proto.addListener = function addListener(evt, listener) {
169		var listeners = this.getListenersAsObject(evt);
170		var listenerIsWrapped = typeof listener === 'object';
171		var key;
172
173		for (key in listeners) {
174			if (listeners.hasOwnProperty(key) && indexOfListener(listeners[key], listener) === -1) {
175				listeners[key].push(listenerIsWrapped ? listener : {
176					listener: listener,
177					once: false
178				});
179			}
180		}
181
182		return this;
183	};
184
185	/**
186	 * Alias of addListener
187	 */
188	proto.on = alias('addListener');
189
190	/**
191	 * Semi-alias of addListener. It will add a listener that will be
192	 * automatically removed after it's first execution.
193	 *
194	 * @param {String|RegExp} evt Name of the event to attach the listener to.
195	 * @param {Function} listener Method to be called when the event is emitted. If the function returns true then it will be removed after calling.
196	 * @return {Object} Current instance of EventEmitter for chaining.
197	 */
198	proto.addOnceListener = function addOnceListener(evt, listener) {
199		return this.addListener(evt, {
200			listener: listener,
201			once: true
202		});
203	};
204
205	/**
206	 * Alias of addOnceListener.
207	 */
208	proto.once = alias('addOnceListener');
209
210	/**
211	 * Defines an event name. This is required if you want to use a regex to add a listener to multiple events at once. If you don't do this then how do you expect it to know what event to add to? Should it just add to every possible match for a regex? No. That is scary and bad.
212	 * You need to tell it what event names should be matched by a regex.
213	 *
214	 * @param {String} evt Name of the event to create.
215	 * @return {Object} Current instance of EventEmitter for chaining.
216	 */
217	proto.defineEvent = function defineEvent(evt) {
218		this.getListeners(evt);
219		return this;
220	};
221
222	/**
223	 * Uses defineEvent to define multiple events.
224	 *
225	 * @param {String[]} evts An array of event names to define.
226	 * @return {Object} Current instance of EventEmitter for chaining.
227	 */
228	proto.defineEvents = function defineEvents(evts) {
229		for (var i = 0; i < evts.length; i += 1) {
230			this.defineEvent(evts[i]);
231		}
232		return this;
233	};
234
235	/**
236	 * Removes a listener function from the specified event.
237	 * When passed a regular expression as the event name, it will remove the listener from all events that match it.
238	 *
239	 * @param {String|RegExp} evt Name of the event to remove the listener from.
240	 * @param {Function} listener Method to remove from the event.
241	 * @return {Object} Current instance of EventEmitter for chaining.
242	 */
243	proto.removeListener = function removeListener(evt, listener) {
244		var listeners = this.getListenersAsObject(evt);
245		var index;
246		var key;
247
248		for (key in listeners) {
249			if (listeners.hasOwnProperty(key)) {
250				index = indexOfListener(listeners[key], listener);
251
252				if (index !== -1) {
253					listeners[key].splice(index, 1);
254				}
255			}
256		}
257
258		return this;
259	};
260
261	/**
262	 * Alias of removeListener
263	 */
264	proto.off = alias('removeListener');
265
266	/**
267	 * Adds listeners in bulk using the manipulateListeners method.
268	 * If you pass an object as the second argument you can add to multiple events at once. The object should contain key value pairs of events and listeners or listener arrays. You can also pass it an event name and an array of listeners to be added.
269	 * You can also pass it a regular expression to add the array of listeners to all events that match it.
270	 * Yeah, this function does quite a bit. That's probably a bad thing.
271	 *
272	 * @param {String|Object|RegExp} evt An event name if you will pass an array of listeners next. An object if you wish to add to multiple events at once.
273	 * @param {Function[]} [listeners] An optional array of listener functions to add.
274	 * @return {Object} Current instance of EventEmitter for chaining.
275	 */
276	proto.addListeners = function addListeners(evt, listeners) {
277		// Pass through to manipulateListeners
278		return this.manipulateListeners(false, evt, listeners);
279	};
280
281	/**
282	 * Removes listeners in bulk using the manipulateListeners method.
283	 * If you pass an object as the second argument you can remove from multiple events at once. The object should contain key value pairs of events and listeners or listener arrays.
284	 * You can also pass it an event name and an array of listeners to be removed.
285	 * You can also pass it a regular expression to remove the listeners from all events that match it.
286	 *
287	 * @param {String|Object|RegExp} evt An event name if you will pass an array of listeners next. An object if you wish to remove from multiple events at once.
288	 * @param {Function[]} [listeners] An optional array of listener functions to remove.
289	 * @return {Object} Current instance of EventEmitter for chaining.
290	 */
291	proto.removeListeners = function removeListeners(evt, listeners) {
292		// Pass through to manipulateListeners
293		return this.manipulateListeners(true, evt, listeners);
294	};
295
296	/**
297	 * Edits listeners in bulk. The addListeners and removeListeners methods both use this to do their job. You should really use those instead, this is a little lower level.
298	 * The first argument will determine if the listeners are removed (true) or added (false).
299	 * If you pass an object as the second argument you can add/remove from multiple events at once. The object should contain key value pairs of events and listeners or listener arrays.
300	 * You can also pass it an event name and an array of listeners to be added/removed.
301	 * You can also pass it a regular expression to manipulate the listeners of all events that match it.
302	 *
303	 * @param {Boolean} remove True if you want to remove listeners, false if you want to add.
304	 * @param {String|Object|RegExp} evt An event name if you will pass an array of listeners next. An object if you wish to add/remove from multiple events at once.
305	 * @param {Function[]} [listeners] An optional array of listener functions to add/remove.
306	 * @return {Object} Current instance of EventEmitter for chaining.
307	 */
308	proto.manipulateListeners = function manipulateListeners(remove, evt, listeners) {
309		var i;
310		var value;
311		var single = remove ? this.removeListener : this.addListener;
312		var multiple = remove ? this.removeListeners : this.addListeners;
313
314		// If evt is an object then pass each of it's properties to this method
315		if (typeof evt === 'object' && !(evt instanceof RegExp)) {
316			for (i in evt) {
317				if (evt.hasOwnProperty(i) && (value = evt[i])) {
318					// Pass the single listener straight through to the singular method
319					if (typeof value === 'function') {
320						single.call(this, i, value);
321					}
322					else {
323						// Otherwise pass back to the multiple function
324						multiple.call(this, i, value);
325					}
326				}
327			}
328		}
329		else {
330			// So evt must be a string
331			// And listeners must be an array of listeners
332			// Loop over it and pass each one to the multiple method
333			i = listeners.length;
334			while (i--) {
335				single.call(this, evt, listeners[i]);
336			}
337		}
338
339		return this;
340	};
341
342	/**
343	 * Removes all listeners from a specified event.
344	 * If you do not specify an event then all listeners will be removed.
345	 * That means every event will be emptied.
346	 * You can also pass a regex to remove all events that match it.
347	 *
348	 * @param {String|RegExp} [evt] Optional name of the event to remove all listeners for. Will remove from every event if not passed.
349	 * @return {Object} Current instance of EventEmitter for chaining.
350	 */
351	proto.removeEvent = function removeEvent(evt) {
352		var type = typeof evt;
353		var events = this._getEvents();
354		var key;
355
356		// Remove different things depending on the state of evt
357		if (type === 'string') {
358			// Remove all listeners for the specified event
359			delete events[evt];
360		}
361		else if (evt instanceof RegExp) {
362			// Remove all events matching the regex.
363			for (key in events) {
364				if (events.hasOwnProperty(key) && evt.test(key)) {
365					delete events[key];
366				}
367			}
368		}
369		else {
370			// Remove all listeners in all events
371			delete this._events;
372		}
373
374		return this;
375	};
376
377	/**
378	 * Alias of removeEvent.
379	 *
380	 * Added to mirror the node API.
381	 */
382	proto.removeAllListeners = alias('removeEvent');
383
384	/**
385	 * Emits an event of your choice.
386	 * When emitted, every listener attached to that event will be executed.
387	 * If you pass the optional argument array then those arguments will be passed to every listener upon execution.
388	 * Because it uses `apply`, your array of arguments will be passed as if you wrote them out separately.