https://www.gazzettaregionale.it/js/wookmark/jquery.imagesloaded.js

52ontaining bar and baz. But only if you have either defined them with defineEvent or added some listeners to them.
53   * Each property in the object response is an array of listener functions.
54   *
55   * @param {String|RegExp} evt Name of the event to return the listeners from.
56   * @return {Function[]|Object} All listener functions for the event.
57   */
58  proto.getListeners = function getListeners(evt) {
59    var events = this._getEvents();
60    var response;
61    var key;
62
63    // Return a concatenated array of all matching events if
64    // the selector is a regular expression.
65    if (typeof evt === 'object') {
66      response = {};
67      for (key in events) {
68        if (events.hasOwnProperty(key) && evt.test(key)) {
69          response[key] = events[key];
70        }
71      }
72    }
73    else {
74      response = events[evt] || (events[evt] = []);
75    }
76
77    return response;
78  };
79
80  /**
81   * Takes a list of listener objects and flattens it into a list of listener functions.
82   *
83   * @param {Object[]} listeners Raw listener objects.
84   * @return {Function[]} Just the listener functions.
85   */
86  proto.flattenListeners = function flattenListeners(listeners) {
87    var flatListeners = [];
88    var i;
89
90    for (i = 0; i < listeners.length; i += 1) {
91      flatListeners.push(listeners[i].listener);
92    }
93
94    return flatListeners;
95  };
96
97  /**
98   * 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.
99   *
100   * @param {String|RegExp} evt Name of the event to return the listeners from.
101   * @return {Object} All listener functions for an event in an object.
102   */
103  proto.getListenersAsObject = function getListenersAsObject(evt) {
104    var listeners = this.getListeners(evt);
105    var response;
106
107    if (listeners instanceof Array) {
108      response = {};
109      response[evt] = listeners;
110    }
111
112    return response || listeners;
113  };
114
115  /**
116   * Adds a listener function to the specified event.
117   * The listener will not be added if it is a duplicate.
118   * If the listener returns true then it will be removed after it is called.
119   * If you pass a regular expression as the event name then the listener will be added to all events that match it.
120   *
121   * @param {String|RegExp} evt Name of the event to attach the listener to.
122   * @param {Function} listener Method to be called when the event is emitted. If the function returns true then it will be removed after calling.
123   * @return {Object} Current instance of EventEmitter for chaining.
124   */
125  proto.addListener = function addListener(evt, listener) {
126    var listeners = this.getListenersAsObject(evt);
127    var listenerIsWrapped = typeof listener === 'object';
128    var key;
129
130    for (key in listeners) {
131      if (listeners.hasOwnProperty(key) && indexOfListener(listeners[key], listener) === -1) {
132        listeners[key].push(listenerIsWrapped ? listener : {
133          listener: listener,
134          once: false
135        });
136      }
137    }
138
139    return this;
140  };
141
142  /**
143   * Alias of addListener
144   */
145  proto.on = proto.addListener;
146
147  /**
148   * Semi-alias of addListener. It will add a listener that will be
149   * automatically removed after it's first execution.
150   *
151   * @param {String|RegExp} evt Name of the event to attach the listener to.
152   * @param {Function} listener Method to be called when the event is emitted. If the function returns true then it will be removed after calling.
153   * @return {Object} Current instance of EventEmitter for chaining.
154   */
155  proto.addOnceListener = function addOnceListener(evt, listener) {
156    return this.addListener(evt, {
157      listener: listener,
158      once: true
159    });
160  };
161
162  /**
163   * Alias of addOnceListener.
164   */
165  proto.once = proto.addOnceListener;
166
167  /**
168   * 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.
169   * You need to tell it what event names should be matched by a regex.
170   *
171   * @param {String} evt Name of the event to create.
172   * @return {Object} Current instance of EventEmitter for chaining.
173   */
174  proto.defineEvent = function defineEvent(evt) {
175    this.getListeners(evt);
176    return this;
177  };
178
179  /**
180   * Uses defineEvent to define multiple events.
181   *
182   * @param {String[]} evts An array of event names to define.
183   * @return {Object} Current instance of EventEmitter for chaining.
184   */
185  proto.defineEvents = function defineEvents(evts) {
186    for (var i = 0; i < evts.length; i += 1) {
187      this.defineEvent(evts[i]);
188    }
189    return this;
190  };
191
192  /**
193   * Removes a listener function from the specified event.
194   * When passed a regular expression as the event name, it will remove the listener from all events that match it.
195   *
196   * @param {String|RegExp} evt Name of the event to remove the listener from.
197   * @param {Function} listener Method to remove from the event.
198   * @return {Object} Current instance of EventEmitter for chaining.
199   */
200  proto.removeListener = function removeListener(evt, listener) {
201    var listeners = this.getListenersAsObject(evt);
202    var index;
203    var key;
204
205    for (key in listeners) {
206      if (listeners.hasOwnProperty(key)) {
207        index = indexOfListener(listeners[key], listener);
208
209        if (index !== -1) {
210          listeners[key].splice(index, 1);
211        }
212      }
213    }
214
215    return this;
216  };
217
218  /**
219   * Alias of removeListener
220   */
221  proto.off = proto.removeListener;
222
223  /**
224   * Adds listeners in bulk using the manipulateListeners method.
225   * 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.
226   * You can also pass it a regular expression to add the array of listeners to all events that match it.
227   * Yeah, this function does quite a bit. That's probably a bad thing.
228   *
229   * @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.
230   * @param {Function[]} [listeners] An optional array of listener functions to add.
231   * @return {Object} Current instance of EventEmitter for chaining.
232   */
233  proto.addListeners = function addListeners(evt, listeners) {
234    // Pass through to manipulateListeners
235    return this.manipulateListeners(false, evt, listeners);
236  };
237
238  /**
239   * Removes listeners in bulk using the manipulateListeners method.
240   * 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.
241   * You can also pass it an event name and an array of listeners to be removed.
242   * You can also pass it a regular expression to remove the listeners from all events that match it.
243   *
244   * @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.
245   * @param {Function[]} [listeners] An optional array of listener functions to remove.
246   * @return {Object} Current instance of EventEmitter for chaining.
247   */
248  proto.removeListeners = function removeListeners(evt, listeners) {
249    // Pass through to manipulateListeners
250    return this.manipulateListeners(true, evt, listeners);
251  };
252
253  /**
254   * 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.
255   * The first argument will determine if the listeners are removed (true) or added (false).
256   * 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.
257   * You can also pass it an event name and an array of listeners to be added/removed.
258   * You can also pass it a regular expression to manipulate the listeners of all events that match it.
259   *
260   * @param {Boolean} remove True if you want to remove listeners, false if you want to add.
261   * @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.
262   * @param {Function[]} [listeners] An optional array of listener functions to add/remove.
263   * @return {Object} Current instance of EventEmitter for chaining.
264   */
265  proto.manipulateListeners = function manipulateListeners(remove, evt, listeners) {
266    var i;
267    var value;
268    var single = remove ? this.removeListener : this.addListener;
269    var multiple = remove ? this.removeListeners : this.addListeners;
270
271    // If evt is an object then pass each of it's properties to this method
272    if (typeof evt === 'object' && !(evt instanceof RegExp)) {
273      for (i in evt) {
274        if (evt.hasOwnProperty(i) && (value = evt[i])) {
275          // Pass the single listener straight through to the singular method
276          if (typeof value === 'function') {
277            single.call(this, i, value);
278          }
279          else {
280            // Otherwise pass back to the multiple function
281            multiple.call(this, i, value);
282          }
283        }
284      }
285    }
286    else {
287      // So evt must be a string
288      // And listeners must be an array of listeners
289      // Loop over it and pass each one to the multiple method
290      i = listeners.length;
291      while (i--) {
292        single.call(this, evt, listeners[i]);
293      }
294    }
295
296    return this;
297  };
298
299  /**
300   * Removes all listeners from a specified event.
301   * If you do not specify an event then all listeners will be removed.
302   * That means every event will be emptied.
303   * You can also pass a regex to remove all events that match it.
304   *
305   * @param {String|RegExp} [evt] Optional name of the event to remove all listeners for. Will remove from every event if not passed.
306   * @return {Object} Current instance of EventEmitter for chaining.
307   */
308  proto.removeEvent = function removeEvent(evt) {
309    var type = typeof evt;
310    var events = this._getEvents();
311    var key;
312
313    // Remove different things depending on the state of evt
314    if (type === 'string') {
315      // Remove all listeners for the specified event
316      delete events[evt];
317    }
318    else if (type === 'object') {
319      // Remove all events matching the regex.
320      for (key in events) {
321        if (events.hasOwnProperty(key) && evt.test(key)) {
322          delete events[key];
323        }
324      }
325    }
326    else {
327      // Remove all listeners in all events
328      delete this._events;
329    }
330
331    return this;
332  };
333
334  /**
335   * Emits an event of your choice.
336   * When emitted, every listener attached to that event will be executed.
337   * If you pass the optional argument array then those arguments will be passed to every listener upon execution.
338   * Because it uses `apply`, your array of arguments will be passed as if you wrote them out separately.
339   * So they will not arrive within the array on the other side, they will be separate.
340   * You can also pass a regular expression to emit to all events that match it.
341   *
342   * @param {String|RegExp} evt Name of the event to emit and execute listeners for.
343   * @param {Array} [args] Optional array of arguments to be passed to each listener.
344   * @return {Object} Current instance of EventEmitter for chaining.
345   */
346  proto.emitEvent = function emitEvent(evt, args) {
347    var listeners = this.getListenersAsObject(evt);
348    var listener;
349    var i;
350    var key;
351    var response;
352
353    for (key in listeners) {
354      if (listeners.hasOwnProperty(key)) {
355        i = listeners[key].length;
356
357        while (i--) {
358          // If the listener returns true then it shall be removed from the event
359          // The function is executed either with a basic call or an apply if there is an args array
360          listener = listeners[key][i];
361          response = listener.listener.apply(this, args || []);
362          if (response === this._getOnceReturnValue() || listener.once === true) {
363            this.removeListener(evt, listeners[key][i].listener);
364          }
365        }
366      }
367    }
368
369    return this;
370  };
371
372  /**
373   * Alias of emitEvent
374   */
375  proto.trigger = proto.emitEvent;
376
377  /**
378   * Subtly different from emitEvent in that it will pass its arguments on to the listeners, as opposed to taking a single array of arguments to pass on.
379   * As with emitEvent, you can pass a regex in place of the event name to emit to all events that match it.
380   *
381   * @param {String|RegExp} evt Name of the event to emit and execute listeners for.
382   * @param {...*} Optional additional arguments to be passed to each listener.
383   * @return {Object} Current instance of EventEmitter for chaining.
384   */
385  proto.emit = function emit(evt) {
386    var args = Array.prototype.slice.call(arguments, 1);
387    return this.emitEvent(evt, args);
388  };
389
390  /**
391   * Sets the current value to check against when executing listeners. If a
392   * listeners return value matches the one set here then it will be removed
393   * after execution. This value defaults to true.
394   *
395   * @param {*} value The new value to check for when executing listeners.
396   * @return {Object} Current instance of EventEmitter for chaining.
397   */
398  proto.setOnceReturnValue = function setOnceReturnValue(value) {
399    this._onceReturnValue = value;
400    return this;
401  };
402
403  /**
404   * Fetches the current value to check against when executing listeners. If
405   * the listeners return value matches this one then it should be removed
406   * automatically. It will return true by default.
407   *
408   * @return {*|Boolean} The current value to check for or the default, true.
409   * @api private
410   */
411  proto._getOnceReturnValue = function _getOnceReturnValue() {
412    if (this.hasOwnProperty('_onceReturnValue')) {
413      return this._onceReturnValue;
414    }
415    else {
416      return true;
417    }
418  };
419
420  /**
421   * Fetches the events object and creates one if required.
422   *
423   * @return {Object} The events storage object.
424   * @api private
425   */
426  proto._getEvents = function _getEvents() {
427    return this._events || (this._events = {});
428  };
429
430  // Expose the class either via AMD, CommonJS or the global object
431  if (typeof define === 'function' && define.amd) {
432                // --------------------------------------------------
433                // ADDED A MODULE ID
434                // --------------------------------------------------
435    define("eventEmitter/EventEmitter", function () {
436      return EventEmitter;
437    });