https://gifzz.com/assets/js/imagesloaded.pkgd.js

1/*!
2 * imagesLoaded PACKAGED v4.1.4
3 * JavaScript is all like "You images are done yet or what?"
4 * MIT License
5 */
6
7/**
8 * EvEmitter v1.1.0
9 * Lil' event emitter
10 * MIT License
11 */
12
13/* jshint unused: true, undef: true, strict: true */
14
15( function( global, factory ) {
16  // universal module definition
17  /* jshint strict: false */ /* globals define, module, window */
18  if ( typeof define == 'function' && define.amd ) {
19    // AMD - RequireJS
20    define( 'ev-emitter/ev-emitter',factory );
21  } else if ( typeof module == 'object' && module.exports ) {
22    // CommonJS - Browserify, Webpack
23    module.exports = factory();
24  } else {
25    // Browser globals
26    global.EvEmitter = factory();
27  }
28
29}( typeof window != 'undefined' ? window : this, function() {
30
31
32
33function EvEmitter() {}
34
35var proto = EvEmitter.prototype;
36
37proto.on = function( eventName, listener ) {
38  if ( !eventName || !listener ) {
39    return;
40  }
41  // set events hash
42  var events = this._events = this._events || {};
43  // set listeners array
44  var listeners = events[ eventName ] = events[ eventName ] || [];
45  // only add once
46  if ( listeners.indexOf( listener ) == -1 ) {
47    listeners.push( listener );
48  }
49
50  return this;
51};
52
53proto.once = function( eventName, listener ) {
54  if ( !eventName || !listener ) {
55    return;
56  }
57  // add event
58  this.on( eventName, listener );
59  // set once flag
60  // set onceEvents hash
61  var onceEvents = this._onceEvents = this._onceEvents || {};
62  // set onceListeners object
63  var onceListeners = onceEvents[ eventName ] = onceEvents[ eventName ] || {};
64  // set flag
65  onceListeners[ listener ] = true;
66
67  return this;
68};
69
70proto.off = function( eventName, listener ) {
71  var listeners = this._events && this._events[ eventName ];
72  if ( !listeners || !listeners.length ) {
73    return;
74  }
75  var index = listeners.indexOf( listener );
76  if ( index != -1 ) {
77    listeners.splice( index, 1 );
78  }
79
80  return this;
81};
82
83proto.emitEvent = function( eventName, args ) {
84  var listeners = this._events && this._events[ eventName ];
85  if ( !listeners || !listeners.length ) {
86    return;
87  }
88  // copy over to avoid interference if .off() in listener
89  listeners = listeners.slice(0);
90  args = args || [];
91  // once stuff
92  var onceListeners = this._onceEvents && this._onceEvents[ eventName ];
93
94  for ( var i=0; i < listeners.length; i++ ) {
95    var listener = listeners[i]
96    var isOnce = onceListeners && onceListeners[ listener ];
97    if ( isOnce ) {
98      // remove listener
99      // remove before trigger to prevent recursion
100      this.off( eventName, listener );
101      // unset once flag
102      delete onceListeners[ listener ];
103    }
104    // trigger listener
105    listener.apply( this, args );
106  }
107
108  return this;
109};
110
111proto.allOff = function() {
112  delete this._events;
113  delete this._onceEvents;
114};
115
116return EvEmitter;
117
118}));
119
120/*!
121 * imagesLoaded v4.1.4
122 * JavaScript is all like "You images are done yet or what?"
123 * MIT License
124 */
125
126( function( window, factory ) { 'use strict';
127  // universal module definition
128
129  /*global define: false, module: false, require: false */
130
131  if ( typeof define == 'function' && define.amd ) {
132    // AMD
133    define( [
134      'ev-emitter/ev-emitter'
135    ], function( EvEmitter ) {
136      return factory( window, EvEmitter );
137    });
138  } else if ( typeof module == 'object' && module.exports ) {
139    // CommonJS
140    module.exports = factory(
141      window,
142      require('ev-emitter')
143    );
144  } else {
145    // browser global
146    window.imagesLoaded = factory(
147      window,
148      window.EvEmitter
149    );
150  }
151
152})( typeof window !== 'undefined' ? window : this,
153
154// --------------------------  factory -------------------------- //
155
156function factory( window, EvEmitter ) {
157
158
159
160var $ = window.jQuery;
161var console = window.console;
162
163// -------------------------- helpers -------------------------- //
164
165// extend objects
166function extend( a, b ) {
167  for ( var prop in b ) {
168    a[ prop ] = b[ prop ];
169  }
170  return a;
171}
172
173var arraySlice = Array.prototype.slice;
174
175// turn element or nodeList into an array
176function makeArray( obj ) {
177  if ( Array.isArray( obj ) ) {
178    // use object if already an array
179    return obj;
180  }
181
182  var isArrayLike = typeof obj == 'object' && typeof obj.length == 'number';
183  if ( isArrayLike ) {
184    // convert nodeList to array
185    return arraySlice.call( obj );
186  }
187
188  // array of single index
189  return [ obj ];
190}
191
192// -------------------------- imagesLoaded -------------------------- //
193
194/**
195 * @param {Array, Element, NodeList, String} elem
196 * @param {Object or Function} options - if function, use as callback
197 * @param {Function} onAlways - callback function
198 */
199function ImagesLoaded( elem, options, onAlways ) {
200  // coerce ImagesLoaded() without new, to be new ImagesLoaded()
201  if ( !( this instanceof ImagesLoaded ) ) {
202    return new ImagesLoaded( elem, options, onAlways );
203  }
204  // use elem as selector string
205  var queryElem = elem;
206  if ( typeof elem == 'string' ) {
207    queryElem = document.querySelectorAll( elem );
208  }
209  // bail if bad element
210  if ( !queryElem ) {
211    console.error( 'Bad element for imagesLoaded ' + ( queryElem || elem ) );
212    return;
213  }
214
215  this.elements = makeArray( queryElem );
216  this.options = extend( {}, this.options );
217  // shift arguments if no options set
218  if ( typeof options == 'function' ) {
219    onAlways = options;
220  } else {
221    extend( this.options, options );
222  }
223
224  if ( onAlways ) {
225    this.on( 'always', onAlways );
226  }
227
228  this.getImages();
229
230  if ( $ ) {
231    // add jQuery Deferred object
232    this.jqDeferred = new $.Deferred();
233  }
234
235  // HACK check async to allow time to bind listeners
236  setTimeout( this.check.bind( this ) );
237}
238
239ImagesLoaded.prototype = Object.create( EvEmitter.prototype );
240
241ImagesLoaded.prototype.options = {};
242
243ImagesLoaded.prototype.getImages = function() {
244  this.images = [];
245
246  // filter & find items if we have an item selector

247  this.elements.forEach( this.addElementImages, this );
248};
249
250/**
251 * @param {Node} element
252 */
253ImagesLoaded.prototype.addElementImages = function( elem ) {
254  // filter siblings
255  if ( elem.nodeName == 'IMG' ) {
256    this.addImage( elem );
257  }
258  // get background image on element
259  if ( this.options.background === true ) {
260    this.addElementBackgroundImages( elem );
261  }
262
263  // find children
264  // no non-element nodes, #143
265  var nodeType = elem.nodeType;
266  if ( !nodeType || !elementNodeTypes[ nodeType ] ) {
267    return;
268  }
269  var childImgs = elem.querySelectorAll('img');
270  // concat childElems to filterFound array
271  for ( var i=0; i < childImgs.length; i++ ) {
272    var img = childImgs[i];
273    this.addImage( img );
274  }
275
276  // get child background images
277  if ( typeof this.options.background == 'string' ) {
278    var children = elem.querySelectorAll( this.options.background );
279    for ( i=0; i < children.length; i++ ) {
280      var child = children[i];
281      this.addElementBackgroundImages( child );
282    }
283  }
284};
285
286var elementNodeTypes = {
287  1: true,
288  9: true,
289  11: true
290};
291
292ImagesLoaded.prototype.addElementBackgroundImages = function( elem ) {
293  var style = getComputedStyle( elem );
294  if ( !style ) {
295    // Firefox returns null if in a hidden iframe https://bugzil.la/548397
296    return;
297  }
298  // get url inside url("...")
299  var reURL = /url\((['"])?(.*?)\1\)/gi;
300  var matches = reURL.exec( style.backgroundImage );
301  while ( matches !== null ) {
302    var url = matches && matches[2];
303    if ( url ) {
304      this.addBackground( url, elem );
305    }
306    matches = reURL.exec( style.backgroundImage );
307  }
308};
309
310/**
311 * @param {Image} img
312 */
313ImagesLoaded.prototype.addImage = function( img ) {
314  var loadingImage = new LoadingImage( img );
315  this.images.push( loadingImage );
316};
317
318ImagesLoaded.prototype.addBackground = function( url, elem ) {
319  var background = new Background( url, elem );
320  this.images.push( background );
321};
322
323ImagesLoaded.prototype.check = function() {
324  var _this = this;
325  this.progressedCount = 0;
326  this.hasAnyBroken = false;
327  // complete if no images
328  if ( !this.images.length ) {
329    this.complete();
330    return;
331  }
332
333  function onProgress( image, elem, message ) {
334    // HACK - Chrome triggers event before object properties have changed. #83
335    setTimeout( function() {
336      _this.progress( image, elem, message );
337    });
338  }
339
340  this.images.forEach( function( loadingImage ) {
341    loadingImage.once( 'progress', onProgress );
342    loadingImage.check();
343  });
344};
345
346ImagesLoaded.prototype.progress = function( image, elem, message ) {
347  this.progressedCount++;
348  this.hasAnyBroken = this.hasAnyBroken || !image.isLoaded;
349  // progress event
350  this.emitEvent( 'progress', [ this, image, elem ] );
351  if ( this.jqDeferred && this.jqDeferred.notify ) {
352    this.jqDeferred.notify( this, image );
353  }
354  // check if completed
355  if ( this.progressedCount == this.images.length ) {
356    this.complete();
357  }
358
359  if ( this.options.debug && console ) {
360    console.log( 'progress: ' + message, image, elem );
361  }
362};
363
364ImagesLoaded.prototype.complete = function() {
365  var eventName = this.hasAnyBroken ? 'fail' : 'done';
366  this.isComplete = true;
367  this.emitEvent( eventName, [ this ] );
368  this.emitEvent( 'always', [ this ] );
369  if ( this.jqDeferred ) {
370    var jqMethod = this.hasAnyBroken ? 'reject' : 'resolve';
371    this.jqDeferred[ jqMethod ]( this );
372  }
373};
374
375// --------------------------  -------------------------- //
376
377function LoadingImage( img ) {
378  this.img = img;
379}
380
381LoadingImage.prototype = Object.create( EvEmitter.prototype );
382
383LoadingImage.prototype.check = function() {
384  // If complete is true and browser supports natural sizes,
385  // try to check for image status manually.
386  var isComplete = this.getIsImageComplete();
387  if ( isComplete ) {
388    // report based on naturalWidth
389    this.confirm( this.img.naturalWidth !== 0, 'naturalWidth' );
390    return;
391  }
392
393  // If none of the checks above matched, simulate loading on detached element.
394  this.proxyImage = new Image();
395  this.proxyImage.addEventListener( 'load', this );
396  this.proxyImage.addEventListener( 'error', this );
397  // bind to image as well for Firefox. #191
398  this.img.addEventListener( 'load', this );
399  this.img.addEventListener( 'error', this );
400  this.proxyImage.src = this.img.src;
401};
402
403LoadingImage.prototype.getIsImageComplete = function() {
404  // check for non-zero, non-undefined naturalWidth
405  // fixes Safari+InfiniteScroll+Masonry bug infinite-scroll#671
406  return this.img.complete && this.img.naturalWidth;
407};
408
409LoadingImage.prototype.confirm = function( isLoaded, message ) {
410  this.isLoaded = isLoaded;
411  this.emitEvent( 'progress', [ this, this.img, message ] );
412};
413
414// ----- events ----- //
415
416// trigger specified handler for event type
417LoadingImage.prototype.handleEvent = function( event ) {
418  var method = 'on' + event.type;
419  if ( this[ method ] ) {
420    this[ method ]( event );
421  }
422};
423
424LoadingImage.prototype.onload = function() {
425  this.confirm( true, 'onload' );
426  this.unbindEvents();
427};
428
429LoadingImage.prototype.onerror = function() {
430  this.confirm( false, 'onerror' );
431  this.unbindEvents();
432};
433
434LoadingImage.prototype.unbindEvents = function() {
435  this.proxyImage.removeEventListener( 'load', this );
436  this.proxyImage.removeEventListener( 'error', this );
437  this.img.removeEventListener( 'load', this );
438  this.img.removeEventListener( 'error', this );
439};
440
441// -------------------------- Background -------------------------- //
442
443function Background( url, element ) {
444  this.url = url;
445  this.element = element;
446  this.img = new Image();
447}
448
449// inherit LoadingImage prototype
450Background.prototype = Object.create( LoadingImage.prototype );
451
452Background.prototype.check = function() {
453  this.img.addEventListener( 'load', this );
454  this.img.addEventListener( 'error', this );
455  this.img.src = this.url;
456  // check if image is already complete
457  var isComplete = this.getIsImageComplete();
458  if ( isComplete ) {
459    this.confirm( this.img.naturalWidth !== 0, 'naturalWidth' );
460    this.unbindEvents();
461  }
462};
463
464Background.prototype.unbindEvents = function() {
465  this.img.removeEventListener( 'load', this );
466  this.img.removeEventListener( 'error', this );
467};
468
469Background.prototype.confirm = function( isLoaded, message ) {
470  this.isLoaded = isLoaded;
471  this.emitEvent( 'progress', [ this, this.element, message ] );
472};
473
474// -------------------------- jQuery -------------------------- //
475
476ImagesLoaded.makeJQueryPlugin = function( jQuery ) {
477  jQuery = jQuery || window.jQuery;
478  if ( !jQuery ) {
479    return;
480  }
481  // set local variable
482  $ = jQuery;
483  // $().imagesLoaded()
484  $.fn.imagesLoaded = function( options, callback ) {
485    var instance = new ImagesLoaded( this, options, callback );
486    return instance.jqDeferred.promise( $(this) );
487  };
488};
489// try making plugin
490ImagesLoaded.makeJQueryPlugin();
491
492// --------------------------  -------------------------- //
493
494return ImagesLoaded;
495
496});
497