https://fpaj.jp/wp-content/themes/total/js/isotope.pkgd.js?ver=1.2.59

1/*!
2 * Isotope PACKAGED v3.0.6
3 *
4 * Licensed GPLv3 for open source use
5 * or Isotope Commercial License for commercial use
6 *
7 * https://isotope.metafizzy.co
8 * Copyright 2010-2018 Metafizzy
9 */
10
11/**
12 * Bridget makes jQuery widgets
13 * v2.0.1
14 * MIT license
15 */
16
17/* jshint browser: true, strict: true, undef: true, unused: true */
18
19( function( window, factory ) {
20  // universal module definition
21  /*jshint strict: false */ /* globals define, module, require */
22  if ( typeof define == 'function' && define.amd ) {
23    // AMD
24    define( 'jquery-bridget/jquery-bridget',[ 'jquery' ], function( jQuery ) {
25      return factory( window, jQuery );
26    });
27  } else if ( typeof module == 'object' && module.exports ) {
28    // CommonJS
29    module.exports = factory(
30      window,
31      require('jquery')
32    );
33  } else {
34    // browser global
35    window.jQueryBridget = factory(
36      window,
37      window.jQuery
38    );
39  }
40
41}( window, function factory( window, jQuery ) {
42'use strict';
43
44// ----- utils ----- //
45
46var arraySlice = Array.prototype.slice;
47
48// helper function for logging errors
49// $.error breaks jQuery chaining
50var console = window.console;
51var logError = typeof console == 'undefined' ? function() {} :
52  function( message ) {
53    console.error( message );
54  };
55
56// ----- jQueryBridget ----- //
57
58function jQueryBridget( namespace, PluginClass, $ ) {
59  $ = $ || jQuery || window.jQuery;
60  if ( !$ ) {
61    return;
62  }
63
64  // add option method -> $().plugin('option', {...})
65  if ( !PluginClass.prototype.option ) {
66    // option setter
67    PluginClass.prototype.option = function( opts ) {
68      // bail out if not an object
69      if ( !$.isPlainObject( opts ) ){
70        return;
71      }
72      this.options = $.extend( true, this.options, opts );
73    };
74  }
75
76  // make jQuery plugin
77  $.fn[ namespace ] = function( arg0 /*, arg1 */ ) {
78    if ( typeof arg0 == 'string' ) {
79      // method call $().plugin( 'methodName', { options } )
80      // shift arguments by 1
81      var args = arraySlice.call( arguments, 1 );
82      return methodCall( this, arg0, args );
83    }
84    // just $().plugin({ options })
85    plainCall( this, arg0 );
86    return this;
87  };
88
89  // $().plugin('methodName')
90  function methodCall( $elems, methodName, args ) {
91    var returnValue;
92    var pluginMethodStr = '$().' + namespace + '("' + methodName + '")';
93
94    $elems.each( function( i, elem ) {
95      // get instance
96      var instance = $.data( elem, namespace );
97      if ( !instance ) {
98        logError( namespace + ' not initialized. Cannot call methods, i.e. ' +
99          pluginMethodStr );
100        return;
101      }
102
103      var method = instance[ methodName ];
104      if ( !method || methodName.charAt(0) == '_' ) {
105        logError( pluginMethodStr + ' is not a valid method' );
106        return;
107      }
108
109      // apply method, get return value
110      var value = method.apply( instance, args );
111      // set return value if value is returned, use only first value
112      returnValue = returnValue === undefined ? value : returnValue;
113    });
114
115    return returnValue !== undefined ? returnValue : $elems;
116  }
117
118  function plainCall( $elems, options ) {
119    $elems.each( function( i, elem ) {
120      var instance = $.data( elem, namespace );
121      if ( instance ) {
122        // set options & init
123        instance.option( options );
124        instance._init();
125      } else {
126        // initialize new instance
127        instance = new PluginClass( elem, options );
128        $.data( elem, namespace, instance );
129      }
130    });
131  }
132
133  updateJQuery( $ );
134
135}
136
137// ----- updateJQuery ----- //
138
139// set $.bridget for v1 backwards compatibility
140function updateJQuery( $ ) {
141  if ( !$ || ( $ && $.bridget ) ) {
142    return;
143  }
144  $.bridget = jQueryBridget;
145}
146
147updateJQuery( jQuery || window.jQuery );
148
149// -----  ----- //
150
151return jQueryBridget;
152
153}));
154
155/**
156 * EvEmitter v1.1.0
157 * Lil' event emitter
158 * MIT License
159 */
160
161/* jshint unused: true, undef: true, strict: true */
162
163( function( global, factory ) {
164  // universal module definition
165  /* jshint strict: false */ /* globals define, module, window */
166  if ( typeof define == 'function' && define.amd ) {
167    // AMD - RequireJS
168    define( 'ev-emitter/ev-emitter',factory );
169  } else if ( typeof module == 'object' && module.exports ) {
170    // CommonJS - Browserify, Webpack
171    module.exports = factory();
172  } else {
173    // Browser globals
174    global.EvEmitter = factory();
175  }
176
177}( typeof window != 'undefined' ? window : this, function() {
178
179
180
181function EvEmitter() {}
182
183var proto = EvEmitter.prototype;
184
185proto.on = function( eventName, listener ) {
186  if ( !eventName || !listener ) {
187    return;
188  }
189  // set events hash
190  var events = this._events = this._events || {};
191  // set listeners array
192  var listeners = events[ eventName ] = events[ eventName ] || [];
193  // only add once
194  if ( listeners.indexOf( listener ) == -1 ) {
195    listeners.push( listener );
196  }
197
198  return this;
199};
200
201proto.once = function( eventName, listener ) {
202  if ( !eventName || !listener ) {
203    return;
204  }
205  // add event
206  this.on( eventName, listener );
207  // set once flag
208  // set onceEvents hash
209  var onceEvents = this._onceEvents = this._onceEvents || {};
210  // set onceListeners object
211  var onceListeners = onceEvents[ eventName ] = onceEvents[ eventName ] || {};
212  // set flag
213  onceListeners[ listener ] = true;
214
215  return this;
216};
217
218proto.off = function( eventName, listener ) {
219  var listeners = this._events && this._events[ eventName ];
220  if ( !listeners || !listeners.length ) {
221    return;
222  }
223  var index = listeners.indexOf( listener );
224  if ( index != -1 ) {
225    listeners.splice( index, 1 );
226  }
227
228  return this;
229};
230
231proto.emitEvent = function( eventName, args ) {
232  var listeners = this._events && this._events[ eventName ];
233  if ( !listeners || !listeners.length ) {
234    return;
235  }
236  // copy over to avoid interference if .off() in listener
237  listeners = listeners.slice(0);
238  args = args || [];
239  // once stuff
240  var onceListeners = this._onceEvents && this._onceEvents[ eventName ];
241
242  for ( var i=0; i < listeners.length; i++ ) {
243    var listener = listeners[i]
244    var isOnce = onceListeners && onceListeners[ listener ];
245    if ( isOnce ) {
246      // remove listener
247      // remove before trigger to prevent recursion
248      this.off( eventName, listener );
249      // unset once flag
250      delete onceListeners[ listener ];
251    }
252    // trigger listener
253    listener.apply( this, args );
254  }
255
256  return this;
257};
258
259proto.allOff = function() {
260  delete this._events;
261  delete this._onceEvents;
262};
263
264return EvEmitter;
265
266}));
267
268/*!
269 * getSize v2.0.3
270 * measure size of elements
271 * MIT license
272 */
273
274/* jshint browser: true, strict: true, undef: true, unused: true */
275/* globals console: false */
276
277( function( window, factory ) {
278  /* jshint strict: false */ /* globals define, module */
279  if ( typeof define == 'function' && define.amd ) {
280    // AMD
281    define( 'get-size/get-size',factory );
282  } else if ( typeof module == 'object' && module.exports ) {
283    // CommonJS
284    module.exports = factory();
285  } else {
286    // browser global
287    window.getSize = factory();
288  }
289
290})( window, function factory() {
291'use strict';
292
293// -------------------------- helpers -------------------------- //
294
295// get a number from a string, not a percentage
296function getStyleSize( value ) {
297  var num = parseFloat( value );
298  // not a percent like '100%', and a number
299  var isValid = value.indexOf('%') == -1 && !isNaN( num );
300  return isValid && num;
301}
302
303function noop() {}
304
305var logError = typeof console == 'undefined' ? noop :
306  function( message ) {
307    console.error( message );
308  };
309
310// -------------------------- measurements -------------------------- //
311
312var measurements = [
313  'paddingLeft',
314  'paddingRight',
315  'paddingTop',
316  'paddingBottom',
317  'marginLeft',
318  'marginRight',
319  'marginTop',
320  'marginBottom',
321  'borderLeftWidth',
322  'borderRightWidth',
323  'borderTopWidth',
324  'borderBottomWidth'
325];
326
327var measurementsLength = measurements.length;
328
329function getZeroSize() {
330  var size = {
331    width: 0,
332    height: 0,
333    innerWidth: 0,
334    innerHeight: 0,
335    outerWidth: 0,
336    outerHeight: 0
337  };
338  for ( var i=0; i < measurementsLength; i++ ) {
339    var measurement = measurements[i];
340    size[ measurement ] = 0;
341  }
342  return size;
343}
344
345// -------------------------- getStyle -------------------------- //
346
347/**
348 * getStyle, get style of element, check for Firefox bug
349 * https://bugzilla.mozilla.org/show_bug.cgi?id=548397
350 */
351function getStyle( elem ) {
352  var style = getComputedStyle( elem );
353  if ( !style ) {
354    logError( 'Style returned ' + style +
355      '. Are you running this code in a hidden iframe on Firefox? ' +
356      'See https://bit.ly/getsizebug1' );
357  }
358  return style;
359}
360
361// -------------------------- setup -------------------------- //
362
363var isSetup = false;

364
365var isBoxSizeOuter;
366
367/**
368 * setup
369 * check isBoxSizerOuter
370 * do on first getSize() rather than on page load for Firefox bug
371 */
372function setup() {
373  // setup once
374  if ( isSetup ) {
375    return;
376  }
377  isSetup = true;
378
379  // -------------------------- box sizing -------------------------- //
380
381  /**
382   * Chrome & Safari measure the outer-width on style.width on border-box elems
383   * IE11 & Firefox<29 measures the inner-width
384   */
385  var div = document.createElement('div');
386  div.style.width = '200px';
387  div.style.padding = '1px 2px 3px 4px';
388  div.style.borderStyle = 'solid';
389  div.style.borderWidth = '1px 2px 3px 4px';
390  div.style.boxSizing = 'border-box';
391
392  var body = document.body || document.documentElement;
393  body.appendChild( div );
394  var style = getStyle( div );
395  // round value for browser zoom. desandro/masonry#928
396  isBoxSizeOuter = Math.round( getStyleSize( style.width ) ) == 200;
397  getSize.isBoxSizeOuter = isBoxSizeOuter;
398
399  body.removeChild( div );
400}
401
402// -------------------------- getSize -------------------------- //
403
404function getSize( elem ) {
405  setup();
406
407  // use querySeletor if elem is string
408  if ( typeof elem == 'string' ) {
409    elem = document.querySelector( elem );
410  }
411
412  // do not proceed on non-objects
413  if ( !elem || typeof elem != 'object' || !elem.nodeType ) {
414    return;
415  }
416
417  var style = getStyle( elem );
418
419  // if hidden, everything is 0
420  if ( style.display == 'none' ) {
421    return getZeroSize();
422  }
423
424  var size = {};
425  size.width = elem.offsetWidth;
426  size.height = elem.offsetHeight;
427
428  var isBorderBox = size.isBorderBox = style.boxSizing == 'border-box';
429
430  // get all measurements
431  for ( var i=0; i < measurementsLength; i++ ) {
432    var measurement = measurements[i];
433    var value = style[ measurement ];
434    var num = parseFloat( value );
435    // any 'auto', 'medium' value will be 0
436    size[ measurement ] = !isNaN( num ) ? num : 0;
437  }
438
439  var paddingWidth = size.paddingLeft + size.paddingRight;
440  var paddingHeight = size.paddingTop + size.paddingBottom;
441  var marginWidth = size.marginLeft + size.marginRight;
442  var marginHeight = size.marginTop + size.marginBottom;
443  var borderWidth = size.borderLeftWidth + size.borderRightWidth;
444  var borderHeight = size.borderTopWidth + size.borderBottomWidth;
445
446  var isBorderBoxSizeOuter = isBorderBox && isBoxSizeOuter;
447
448  // overwrite width and height if we can get it from style
449  var styleWidth = getStyleSize( style.width );
450  if ( styleWidth !== false ) {
451    size.width = styleWidth +
452      // add padding and border unless it's already including it
453      ( isBorderBoxSizeOuter ? 0 : paddingWidth + borderWidth );
454  }
455
456  var styleHeight = getStyleSize( style.height );
457  if ( styleHeight !== false ) {
458    size.height = styleHeight +
459      // add padding and border unless it's already including it
460      ( isBorderBoxSizeOuter ? 0 : paddingHeight + borderHeight );
461  }
462
463  size.innerWidth = size.width - ( paddingWidth + borderWidth );
464  size.innerHeight = size.height - ( paddingHeight + borderHeight );
465
466  size.outerWidth = size.width + marginWidth;
467  size.outerHeight = size.height + marginHeight;
468
469  return size;
470}
471
472return getSize;
473
474});
475
476/**
477 * matchesSelector v2.0.2
478 * matchesSelector( element, '.selector' )
479 * MIT license
480 */
481
482/*jshint browser: true, strict: true, undef: true, unused: true */
483
484( function( window, factory ) {
485  /*global define: false, module: false */
486  'use strict';
487  // universal module definition
488  if ( typeof define == 'function' && define.amd ) {
489    // AMD
490    define( 'desandro-matches-selector/matches-selector',factory );
491  } else if ( typeof module == 'object' && module.exports ) {
492    // CommonJS
493    module.exports = factory();
494  } else {
495    // browser global
496    window.matchesSelector = factory();
497  }
498
499}( window, function factory() {
500  'use strict';
501
502  var matchesMethod = ( function() {
503    var ElemProto = window.Element.prototype;
504    // check for the standard method name first
505    if ( ElemProto.matches ) {
506      return 'matches';
507    }
508    // check un-prefixed
509    if ( ElemProto.matchesSelector ) {
510      return 'matchesSelector';
511    }
512    // check vendor prefixes
513    var prefixes = [ 'webkit', 'moz', 'ms', 'o' ];
514
515    for ( var i=0; i < prefixes.length; i++ ) {
516      var prefix = prefixes[i];
517      var method = prefix + 'MatchesSelector';
518      if ( ElemProto[ method ] ) {
519        return method;
520      }
521    }
522  })();
523
524  return function matchesSelector( elem, selector ) {
525    return elem[ matchesMethod ]( selector );
526  };
527
528}));
529
530/**
531 * Fizzy UI utils v2.0.7
532 * MIT license
533 */
534
535/*jshint browser: true, undef: true, unused: true, strict: true */
536
537( function( window, factory ) {
538  // universal module definition
539  /*jshint strict: false */ /*globals define, module, require */
540
541  if ( typeof define == 'function' && define.amd ) {
542    // AMD
543    define( 'fizzy-ui-utils/utils',[
544      'desandro-matches-selector/matches-selector'
545    ], function( matchesSelector ) {
546      return factory( window, matchesSelector );
547    });
548  } else if ( typeof module == 'object' && module.exports ) {
549    // CommonJS
550    module.exports = factory(
551      window,
552      require('desandro-matches-selector')
553    );
554  } else {
555    // browser global
556    window.fizzyUIUtils = factory(
557      window,
558      window.matchesSelector
559    );
560  }
561
562}( window, function factory( window, matchesSelector ) {
563
564
565
566var utils = {};
567
568// ----- extend ----- //
569
570// extends objects
571utils.extend = function( a, b ) {
572  for ( var prop in b ) {
573    a[ prop ] = b[ prop ];
574  }
575  return a;
576};
577
578// ----- modulo ----- //
579
580utils.modulo = function( num, div ) {
581  return ( ( num % div ) + div ) % div;
582};
583
584// ----- makeArray ----- //
585
586var arraySlice = Array.prototype.slice;
587
588// turn element or nodeList into an array
589utils.makeArray = function( obj ) {
590  if ( Array.isArray( obj ) ) {
591    // use object if already an array
592    return obj;
593  }
594  // return empty array if undefined or null. #6
595  if ( obj === null || obj === undefined ) {
596    return [];
597  }
598
599  var isArrayLike = typeof obj == 'object' && typeof obj.length == 'number';
600  if ( isArrayLike ) {
601    // convert nodeList to array
602    return arraySlice.call( obj );
603  }
604
605  // array of single index
606  return [ obj ];
607};
608
609// ----- removeFrom ----- //
610
611utils.removeFrom = function( ary, obj ) {
612  var index = ary.indexOf( obj );
613  if ( index != -1 ) {
614    ary.splice( index, 1 );
615  }
616};
617
618// ----- getParent ----- //
619
620utils.getParent = function( elem, selector ) {
621  while ( elem.parentNode && elem != document.body ) {
622    elem = elem.parentNode;
623    if ( matchesSelector( elem, selector ) ) {
624      return elem;
625    }
626  }
627};
628
629// ----- getQueryElement ----- //
630
631// use element as selector string
632utils.getQueryElement = function( elem ) {
633  if ( typeof elem == 'string' ) {
634    return document.querySelector( elem );
635  }
636  return elem;
637};
638
639// ----- handleEvent ----- //
640
641// enable .ontype to trigger from .addEventListener( elem, 'type' )
642utils.handleEvent = function( event ) {
643  var method = 'on' + event.type;
644  if ( this[ method ] ) {
645    this[ method ]( event );
646  }
647};
648
649// ----- filterFindElements ----- //
650
651utils.filterFindElements = function( elems, selector ) {
652  // make array of elems
653  elems = utils.makeArray( elems );
654  var ffElems = [];
655
656  elems.forEach( function( elem ) {
657    // check that elem is an actual element
658    if ( !( elem instanceof HTMLElement ) ) {
659      return;
660    }
661    // add elem if no selector
662    if ( !selector ) {
663      ffElems.push( elem );
664      return;
665    }
666    // filter & find items if we have a selector
667    // filter
668    if ( matchesSelector( elem, selector ) ) {
669      ffElems.push( elem );
670    }
671    // find children
672    var childElems = elem.querySelectorAll( selector );
673    // concat childElems to filterFound array
674    for ( var i=0; i < childElems.length; i++ ) {
675      ffElems.push( childElems[i] );
676    }
677  });
678
679  return ffElems;
680};
681
682// ----- debounceMethod ----- //
683
684utils.debounceMethod = function( _class, methodName, threshold ) {
685  threshold = threshold || 100;
686  // original method
687  var method = _class.prototype[ methodName ];
688  var timeoutName = methodName + 'Timeout';
689
690  _class.prototype[ methodName ] = function() {
691    var timeout = this[ timeoutName ];
692    clearTimeout( timeout );
693
694    var args = arguments;
695    var _this = this;
696    this[ timeoutName ] = setTimeout( function() {
697      method.apply( _this, args );
698      delete _this[ timeoutName ];
699    }, threshold );
700  };
701};
702
703// ----- docReady ----- //
704
705utils.docReady = function( callback ) {
706  var readyState = document.readyState;
707  if ( readyState == 'complete' || readyState == 'interactive' ) {
708    // do async to allow for other scripts to run. metafizzy/flickity#441
709    setTimeout( callback );
710  } else {
711    document.addEventListener( 'DOMContentLoaded', callback );
712  }
713};
714
715// ----- htmlInit ----- //
716
717// http://jamesroberts.name/blog/2010/02/22/string-functions-for-javascript-trim-to-camel-case-to-dashed-and-to-underscore/
718utils.toDashed = function( str ) {
719  return str.replace( /(.)([A-Z])/g, function( match, $1, $2 ) {
720    return $1 + '-' + $2;
721  }).toLowerCase();
722};
723
724var console = window.console;
725/**
726 * allow user to initialize classes via [data-namespace] or .js-namespace class
727 * htmlInit( Widget, 'widgetName' )
728 * options are parsed from data-namespace-options
729 */
730utils.htmlInit = function( WidgetClass, namespace ) {
731  utils.docReady( function() {
732    var dashedNamespace = utils.toDashed( namespace );
733    var dataAttr = 'data-' + dashedNamespace;
734    var dataAttrElems = document.querySelectorAll( '[' + dataAttr + ']' );
735    var jsDashElems = document.querySelectorAll( '.js-' + dashedNamespace );
736    var elems = utils.makeArray( dataAttrElems )
737      .concat( utils.makeArray( jsDashElems ) );
738    var dataOptionsAttr = dataAttr + '-options';
739    var jQuery = window.jQuery;
740
741    elems.forEach( function( elem ) {
742      var attr = elem.getAttribute( dataAttr ) ||
743        elem.getAttribute( dataOptionsAttr );
744      var options;
745      try {
746        options = attr && JSON.parse( attr );
747      } catch ( error ) {
748        // log error, do not initialize
749        if ( console ) {
750          console.error( 'Error parsing ' + dataAttr + ' on ' + elem.className +
751          ': ' + error );
752        }
753        return;
754      }
755      // initialize
756      var instance = new WidgetClass( elem, options );
757      // make available via $().data('namespace')
758      if ( jQuery ) {
759        jQuery.data( elem, namespace, instance );
760      }
761    });
762
763  });
764};
765
766// -----  ----- //
767
768return utils;
769
770}));
771
772/**
773 * Outlayer Item
774 */
775
776( function( window, factory ) {
777  // universal module definition
778  /* jshint strict: false */ /* globals define, module, require */
779  if ( typeof define == 'function' && define.amd ) {
780    // AMD - RequireJS
781    define( 'outlayer/item',[
782        'ev-emitter/ev-emitter',
783        'get-size/get-size'
784      ],
785      factory
786    );
787  } else if ( typeof module == 'object' && module.exports ) {
788    // CommonJS - Browserify, Webpack
789    module.exports = factory(
790      require('ev-emitter'),
791      require('get-size')
792    );
793  } else {
794    // browser global
795    window.Outlayer = {};
796    window.Outlayer.Item = factory(
797      window.EvEmitter,
798      window.getSize
799    );
800  }
801
802}( window, function factory( EvEmitter, getSize ) {
803'use strict';
804
805// ----- helpers ----- //
806
807function isEmptyObj( obj ) {
808  for ( var prop in obj ) {
809    return false;
810  }
811  prop = null;
812  return true;
813}
814
815// -------------------------- CSS3 support -------------------------- //
816
817
818var docElemStyle = document.documentElement.style;
819
820var transitionProperty = typeof docElemStyle.transition == 'string' ?
821  'transition' : 'WebkitTransition';
822var transformProperty = typeof docElemStyle.transform == 'string' ?
823  'transform' : 'WebkitTransform';
824
825var transitionEndEvent = {
826  WebkitTransition: 'webkitTransitionEnd',
827  transition: 'transitionend'
828}[ transitionProperty ];
829
830// cache all vendor properties that could have vendor prefix
831var vendorProperties = {
832  transform: transformProperty,
833  transition: transitionProperty,
834  transitionDuration: transitionProperty + 'Duration',
835  transitionProperty: transitionProperty + 'Property',
836  transitionDelay: transitionProperty + 'Delay'
837};
838
839// -------------------------- Item -------------------------- //
840
841function Item( element, layout ) {
842  if ( !element ) {
843    return;
844  }
845
846  this.element = element;
847  // parent layout class, i.e. Masonry, Isotope, or Packery
848  this.layout = layout;
849  this.position = {
850    x: 0,
851    y: 0
852  };
853
854  this._create();
855}
856
857// inherit EvEmitter
858var proto = Item.prototype = Object.create( EvEmitter.prototype );
859proto.constructor = Item;
860
861proto._create = function() {
862  // transition objects
863  this._transn = {
864    ingProperties: {},
865    clean: {},
866    onEnd: {}
867  };
868
869  this.css({
870    position: 'absolute'
871  });
872};
873
874// trigger specified handler for event type
875proto.handleEvent = function( event ) {
876  var method = 'on' + event.type;
877  if ( this[ method ] ) {
878    this[ method ]( event );
879  }
880};
881
882proto.getSize = function() {
883  this.size = getSize( this.element );
884};
885
886/**
887 * apply CSS styles to element
888 * @param {Object} style
889 */
890proto.css = function( style ) {
891  var elemStyle = this.element.style;
892
893  for ( var prop in style ) {
894    // use vendor property if available
895    var supportedProp = vendorProperties[ prop ] || prop;
896    elemStyle[ supportedProp ] = style[ prop ];
897  }
898};
899
900 // measure position, and sets it
901proto.getPosition = function() {
902  var style = getComputedStyle( this.element );
903  var isOriginLeft = this.layout._getOption('originLeft');
904  var isOriginTop = this.layout._getOption('originTop');
905  var xValue = style[ isOriginLeft ? 'left' : 'right' ];
906  var yValue = style[ isOriginTop ? 'top' : 'bottom' ];
907  var x = parseFloat( xValue );
908  var y = parseFloat( yValue );
909  // convert percent to pixels
910  var layoutSize = this.layout.size;
911  if ( xValue.indexOf('%') != -1 ) {
912    x = ( x / 100 ) * layoutSize.width;
913  }
914  if ( yValue.indexOf('%') != -1 ) {
915    y = ( y / 100 ) * layoutSize.height;
916  }
917  // clean up 'auto' or other non-integer values
918  x = isNaN( x ) ? 0 : x;
919  y = isNaN( y ) ? 0 : y;
920  // remove padding from measurement
921  x -= isOriginLeft ? layoutSize.paddingLeft : layoutSize.paddingRight;
922  y -= isOriginTop ? layoutSize.paddingTop : layoutSize.paddingBottom;
923
924  this.position.x = x;
925  this.position.y = y;
926};
927
928// set settled position, apply padding
929proto.layoutPosition = function() {
930  var layoutSize = this.layout.size;
931  var style = {};
932  var isOriginLeft = this.layout._getOption('originLeft');
933  var isOriginTop = this.layout._getOption('originTop');
934
935  // x
936  var xPadding = isOriginLeft ? 'paddingLeft' : 'paddingRight';
937  var xProperty = isOriginLeft ? 'left' : 'right';
938  var xResetProperty = isOriginLeft ? 'right' : 'left';
939
940  var x = this.position.x + layoutSize[ xPadding ];
941  // set in percentage or pixels
942  style[ xProperty ] = this.getXValue( x );
943  // reset other property
944  style[ xResetProperty ] = '';
945
946  // y
947  var yPadding = isOriginTop ? 'paddingTop' : 'paddingBottom';
948  var yProperty = isOriginTop ? 'top' : 'bottom';
949  var yResetProperty = isOriginTop ? 'bottom' : 'top';
950
951  var y = this.position.y + layoutSize[ yPadding ];
952  // set in percentage or pixels
953  style[ yProperty ] = this.getYValue( y );
954  // reset other property
955  style[ yResetProperty ] = '';
956
957  this.css( style );
958  this.emitEvent( 'layout', [ this ] );
959};
960
961proto.getXValue = function( x ) {
962  var isHorizontal = this.layout._getOption('horizontal');
963  return this.layout.options.percentPosition && !isHorizontal ?
964    ( ( x / this.layout.size.width ) * 100 ) + '%' : x + 'px';
965};
966
967proto.getYValue = function( y ) {
968  var isHorizontal = this.layout._getOption('horizontal');
969  return this.layout.options.percentPosition && isHorizontal ?
970    ( ( y / this.layout.size.height ) * 100 ) + '%' : y + 'px';
971};
972
973proto._transitionTo = function( x, y ) {
974  this.getPosition();
975  // get current x & y from top/left
976  var curX = this.position.x;
977  var curY = this.position.y;
978
979  var didNotMove = x == this.position.x && y == this.position.y;
980
981  // save end position
982  this.setPosition( x, y );
983
984  // if did not move and not transitioning, just go to layout
985  if ( didNotMove && !this.isTransitioning ) {
986    this.layoutPosition();
987    return;
988  }
989
990  var transX = x - curX;
991  var transY = y - curY;
992  var transitionStyle = {};
993  transitionStyle.transform = this.getTranslate( transX, transY );
994
995  this.transition({
996    to: transitionStyle,
997    onTransitionEnd: {
998      transform: this.layoutPosition
999    },
1000    isCleaning: true
1001  });
1002};
1003
1004proto.getTranslate = function( x, y ) {
1005  // flip cooridinates if origin on right or bottom
1006  var isOriginLeft = this.layout._getOption('originLeft');
1007  var isOriginTop = this.layout._getOption('originTop');
1008  x = isOriginLeft ? x : -x;
1009  y = isOriginTop ? y : -y;
1010  return 'translate3d(' + x + 'px, ' + y + 'px, 0)';
1011};
1012
1013// non transition + transform support
1014proto.goTo = function( x, y ) {
1015  this.setPosition( x, y );
1016  this.layoutPosition();
1017};
1018
1019proto.moveTo = proto._transitionTo;
1020
1021proto.setPosition = function( x, y ) {
1022  this.position.x = parseFloat( x );
1023  this.position.y = parseFloat( y );
1024};
1025
1026// ----- transition ----- //
1027
1028/**
1029 * @param {Object} style - CSS
1030 * @param {Function} onTransitionEnd
1031 */
1032
1033// non transition, just trigger callback
1034proto._nonTransition = function( args ) {
1035  this.css( args.to );
1036  if ( args.isCleaning ) {
1037    this._removeStyles( args.to );
1038  }
1039  for ( var prop in args.onTransitionEnd ) {
1040    args.onTransitionEnd[ prop ].call( this );
1041  }
1042};
1043
1044/**
1045 * proper transition
1046 * @param {Object} args - arguments
1047 *   @param {Object} to - style to transition to
1048 *   @param {Object} from - style to start transition from
1049 *   @param {Boolean} isCleaning - removes transition styles after transition
1050 *   @param {Function} onTransitionEnd - callback
1051 */
1052proto.transition = function( args ) {
1053  // redirect to nonTransition if no transition duration
1054  if ( !parseFloat( this.layout.options.transitionDuration ) ) {
1055    this._nonTransition( args );
1056    return;
1057  }
1058
1059  var _transition = this._transn;
1060  // keep track of onTransitionEnd callback by css property
1061  for ( var prop in args.onTransitionEnd ) {
1062    _transition.onEnd[ prop ] = args.onTransitionEnd[ prop ];
1063  }
1064  // keep track of properties that are transitioning
1065  for ( prop in args.to ) {
1066    _transition.ingProperties[ prop ] = true;
1067    // keep track of properties to clean up when transition is done
1068    if ( args.isCleaning ) {
1069      _transition.clean[ prop ] = true;
1070    }
1071  }
1072
1073  // set from styles
1074  if ( args.from ) {
1075    this.css( args.from );
1076    // force redraw. http://blog.alexmaccaw.com/css-transitions
1077    var h = this.element.offsetHeight;
1078    // hack for JSHint to hush about unused var
1079    h = null;
1080  }
1081  // enable transition
1082  this.enableTransition( args.to );
1083  // set styles that are transitioning
1084  this.css( args.to );
1085
1086  this.isTransitioning = true;
1087
1088};
1089
1090// dash before all cap letters, including first for
1091// WebkitTransform => -webkit-transform
1092function toDashedAll( str ) {
1093  return str.replace( /([A-Z])/g, function( $1 ) {
1094    return '-' + $1.toLowerCase();
1095  });
1096}
1097
1098var transitionProps = 'opacity,' + toDashedAll( transformProperty );
1099
1100proto.enableTransition = function(/* style */) {
1101  // HACK changing transitionProperty during a transition
1102  // will cause transition to jump
1103  if ( this.isTransitioning ) {
1104    return;
1105  }
1106
1107  // make `transition: foo, bar, baz` from style object
1108  // HACK un-comment this when enableTransition can work
1109  // while a transition is happening
1110  // var transitionValues = [];
1111  // for ( var prop in style ) {
1112  //   // dash-ify camelCased properties like WebkitTransition
1113  //   prop = vendorProperties[ prop ] || prop;
1114  //   transitionValues.push( toDashedAll( prop ) );
1115  // }
1116  // munge number to millisecond, to match stagger
1117  var duration = this.layout.options.transitionDuration;
1118  duration = typeof duration == 'number' ? duration + 'ms' : duration;
1119  // enable transition styles
1120  this.css({
1121    transitionProperty: transitionProps,
1122    transitionDuration: duration,
1123    transitionDelay: this.staggerDelay || 0
1124  });
1125  // listen for transition end event
1126  this.element.addEventListener( transitionEndEvent, this, false );
1127};
1128
1129// ----- events ----- //
1130
1131proto.onwebkitTransitionEnd = function( event ) {
1132  this.ontransitionend( event );
1133};
1134
1135proto.onotransitionend = function( event ) {
1136  this.ontransitionend( event );
1137};
1138
1139// properties that I munge to make my life easier
1140var dashedVendorProperties = {
1141  '-webkit-transform': 'transform'
1142};
1143
1144proto.ontransitionend = function( event ) {
1145  // disregard bubbled events from children
1146  if ( event.target !== this.element ) {
1147    return;
1148  }
1149  var _transition = this._transn;
1150  // get property name of transitioned property, convert to prefix-free
1151  var propertyName = dashedVendorProperties[ event.propertyName ] || event.propertyName;
1152
1153  // remove property that has completed transitioning
1154  delete _transition.ingProperties[ propertyName ];
1155  // check if any properties are still transitioning
1156  if ( isEmptyObj( _transition.ingProperties ) ) {
1157    // all properties have completed transitioning
1158    this.disableTransition();
1159  }
1160  // clean style
1161  if ( propertyName in _transition.clean ) {
1162    // clean up style
1163    this.element.style[ event.propertyName ] = '';
1164    delete _transition.clean[ propertyName ];
1165  }
1166  // trigger onTransitionEnd callback
1167  if ( propertyName in _transition.onEnd ) {
1168    var onTransitionEnd = _transition.onEnd[ propertyName ];
1169    onTransitionEnd.call( this );
1170    delete _transition.onEnd[ propertyName ];
1171  }
1172
1173  this.emitEvent( 'transitionEnd', [ this ] );
1174};
1175
1176proto.disableTransition = function() {
1177  this.removeTransitionStyles();
1178  this.element.removeEventListener( transitionEndEvent, this, false );
1179  this.isTransitioning = false;
1180};
1181
1182/**
1183 * removes style property from element
1184 * @param {Object} style
1185**/
1186proto._removeStyles = function( style ) {
1187  // clean up transition styles
1188  var cleanStyle = {};
1189  for ( var prop in style ) {
1190    cleanStyle[ prop ] = '';
1191  }
1192  this.css( cleanStyle );
1193};
1194
1195var cleanTransitionStyle = {
1196  transitionProperty: '',
1197  transitionDuration: '',
1198  transitionDelay: ''
1199};
1200
1201proto.removeTransitionStyles = function() {
1202  // remove transition
1203  this.css( cleanTransitionStyle );
1204};
1205
1206// ----- stagger ----- //
1207
1208proto.stagger = function( delay ) {
1209  delay = isNaN( delay ) ? 0 : delay;
1210  this.staggerDelay = delay + 'ms';
1211};
1212
1213// ----- show/hide/remove ----- //
1214
1215// remove element from DOM
1216proto.removeElem = function() {
1217  this.element.parentNode.removeChild( this.element );
1218  // remove display: none
1219  this.css({ display: '' });
1220  this.emitEvent( 'remove', [ this ] );
1221};
1222
1223proto.remove = function() {
1224  // just remove element if no transition support or no transition
1225  if ( !transitionProperty || !parseFloat( this.layout.options.transitionDuration ) ) {
1226    this.removeElem();
1227    return;
1228  }
1229
1230  // start transition
1231  this.once( 'transitionEnd', function() {
1232    this.removeElem();
1233  });
1234  this.hide();
1235};
1236
1237proto.reveal = function() {
1238  delete this.isHidden;
1239  // remove display: none
1240  this.css({ display: '' });
1241
1242  var options = this.layout.options;
1243
1244  var onTransitionEnd = {};
1245  var transitionEndProperty = this.getHideRevealTransitionEndProperty('visibleStyle');
1246  onTransitionEnd[ transitionEndProperty ] = this.onRevealTransitionEnd;
1247
1248  this.transition({
1249    from: options.hiddenStyle,
1250    to: options.visibleStyle,
1251    isCleaning: true,
1252    onTransitionEnd: onTransitionEnd
1253  });
1254};
1255
1256proto.onRevealTransitionEnd = function() {
1257  // check if still visible
1258  // during transition, item may have been hidden
1259  if ( !this.isHidden ) {
1260    this.emitEvent('reveal');
1261  }
1262};
1263
1264/**
1265 * get style property use for hide/reveal transition end
1266 * @param {String} styleProperty - hiddenStyle/visibleStyle
1267 * @returns {String}
1268 */
1269proto.getHideRevealTransitionEndProperty = function( styleProperty ) {
1270  var optionStyle = this.layout.options[ styleProperty ];
1271  // use opacity
1272  if ( optionStyle.opacity ) {
1273    return 'opacity';
1274  }
1275  // get first property
1276  for ( var prop in optionStyle ) {
1277    return prop;
1278  }
1279};
1280
1281proto.hide = function() {
1282  // set flag
1283  this.isHidden = true;
1284  // remove display: none
1285  this.css({ display: '' });
1286
1287  var options = this.layout.options;
1288
1289  var onTransitionEnd = {};
1290  var transitionEndProperty = this.getHideRevealTransitionEndProperty('hiddenStyle');
1291  onTransitionEnd[ transitionEndProperty ] = this.onHideTransitionEnd;
1292
1293  this.transition({
1294    from: options.visibleStyle,
1295    to: options.hiddenStyle,
1296    // keep hidden stuff hidden
1297    isCleaning: true,
1298    onTransitionEnd: onTransitionEnd
1299  });
1300};
1301
1302proto.onHideTransitionEnd = function() {
1303  // check if still hidden
1304  // during transition, item may have been un-hidden
1305  if ( this.isHidden ) {
1306    this.css({ display: 'none' });
1307    this.emitEvent('hide');
1308  }
1309};
1310
1311proto.destroy = function() {
1312  this.css({
1313    position: '',
1314    left: '',
1315    right: '',
1316    top: '',
1317    bottom: '',
1318    transition: '',
1319    transform: ''
1320  });
1321};
1322
1323return Item;
1324
1325}));
1326
1327/*!
1328 * Outlayer v2.1.1
1329 * the brains and guts of a layout library
1330 * MIT license
1331 */
1332
1333( function( window, factory ) {
1334  'use strict';
1335  // universal module definition
1336  /* jshint strict: false */ /* globals define, module, require */
1337  if ( typeof define == 'function' && define.amd ) {
1338    // AMD - RequireJS
1339    define( 'outlayer/outlayer',[
1340        'ev-emitter/ev-emitter',
1341        'get-size/get-size',
1342        'fizzy-ui-utils/utils',
1343        './item'
1344      ],
1345      function( EvEmitter, getSize, utils, Item ) {
1346        return factory( window, EvEmitter, getSize, utils, Item);
1347      }
1348    );
1349  } else if ( typeof module == 'object' && module.exports ) {
1350    // CommonJS - Browserify, Webpack
1351    module.exports = factory(
1352      window,
1353      require('ev-emitter'),
1354      require('get-size'),
1355      require('fizzy-ui-utils'),
1356      require('./item')
1357    );
1358  } else {
1359    // browser global
1360    window.Outlayer = factory(
1361      window,
1362      window.EvEmitter,
1363      window.getSize,
1364      window.fizzyUIUtils,
1365      window.Outlayer.Item
1366    );
1367  }
1368
1369}( window, function factory( window, EvEmitter, getSize, utils, Item ) {
1370'use strict';
1371
1372// ----- vars ----- //
1373
1374var console = window.console;
1375var jQuery = window.jQuery;
1376var noop = function() {};
1377
1378// -------------------------- Outlayer -------------------------- //
1379
1380// globally unique identifiers
1381var GUID = 0;
1382// internal store of all Outlayer intances
1383var instances = {};
1384
1385
1386/**
1387 * @param {Element, String} element
1388 * @param {Object} options
1389 * @constructor
1390 */
1391function Outlayer( element, options ) {
1392  var queryElement = utils.getQueryElement( element );
1393  if ( !queryElement ) {
1394    if ( console ) {
1395      console.error( 'Bad element for ' + this.constructor.namespace +
1396        ': ' + ( queryElement || element ) );
1397    }
1398    return;
1399  }
1400  this.element = queryElement;
1401  // add jQuery
1402  if ( jQuery ) {
1403    this.$element = jQuery( this.element );
1404  }
1405
1406  // options
1407  this.options = utils.extend( {}, this.constructor.defaults );
1408  this.option( options );
1409
1410  // add id for Outlayer.getFromElement
1411  var id = ++GUID;
1412  this.element.outlayerGUID = id; // expando
1413  instances[ id ] = this; // associate via id
1414
1415  // kick it off
1416  this._create();
1417
1418  var isInitLayout = this._getOption('initLayout');
1419  if ( isInitLayout ) {
1420    this.layout();
1421  }
1422}
1423
1424// settings are for internal use only
1425Outlayer.namespace = 'outlayer';
1426Outlayer.Item = Item;
1427
1428// default options
1429Outlayer.defaults = {
1430  containerStyle: {
1431    position: 'relative'
1432  },
1433  initLayout: true,
1434  originLeft: true,
1435  originTop: true,
1436  resize: true,
1437  resizeContainer: true,
1438  // item options
1439  transitionDuration: '0.4s',
1440  hiddenStyle: {
1441    opacity: 0,
1442    transform: 'scale(0.001)'
1443  },
1444  visibleStyle: {
1445    opacity: 1,
1446    transform: 'scale(1)'
1447  }
1448};
1449
1450var proto = Outlayer.prototype;
1451// inherit EvEmitter
1452utils.extend( proto, EvEmitter.prototype );
1453
1454/**
1455 * set options
1456 * @param {Object} opts
1457 */
1458proto.option = function( opts ) {
1459  utils.extend( this.options, opts );
1460};
1461
1462/**
1463 * get backwards compatible option value, check old name
1464 */
1465proto._getOption = function( option ) {
1466  var oldOption = this.constructor.compatOptions[ option ];
1467  return oldOption && this.options[ oldOption ] !== undefined ?
1468    this.options[ oldOption ] : this.options[ option ];
1469};
1470
1471Outlayer.compatOptions = {
1472  // currentName: oldName
1473  initLayout: 'isInitLayout',
1474  horizontal: 'isHorizontal',
1475  layoutInstant: 'isLayoutInstant',
1476  originLeft: 'isOriginLeft',
1477  originTop: 'isOriginTop',
1478  resize: 'isResizeBound',
1479  resizeContainer: 'isResizingContainer'
1480};
1481
1482proto._create = function() {
1483  // get items from children
1484  this.reloadItems();
1485  // elements that affect layout, but are not laid out
1486  this.stamps = [];
1487  this.stamp( this.options.stamp );
1488  // set container style
1489  utils.extend( this.element.style, this.options.containerStyle );
1490
1491  // bind resize method
1492  var canBindResize = this._getOption('resize');
1493  if ( canBindResize ) {
1494    this.bindResize();
1495  }
1496};
1497
1498// goes through all children again and gets bricks in proper order
1499proto.reloadItems = function() {
1500  // collection of item elements
1501  this.items = this._itemize( this.element.children );
1502};
1503
1504
1505/**
1506 * turn elements into Outlayer.Items to be used in layout
1507 * @param {Array or NodeList or HTMLElement} elems
1508 * @returns {Array} items - collection of new Outlayer Items
1509 */
1510proto._itemize = function( elems ) {
1511
1512  var itemElems = this._filterFindItemElements( elems );
1513  var Item = this.constructor.Item;
1514
1515  // create new Outlayer Items for collection
1516  var items = [];
1517  for ( var i=0; i < itemElems.length; i++ ) {
1518    var elem = itemElems[i];
1519    var item = new Item( elem, this );
1520    items.push( item );
1521  }
1522
1523  return items;
1524};
1525
1526/**
1527 * get item elements to be used in layout
1528 * @param {Array or NodeList or HTMLElement} elems
1529 * @returns {Array} items - item elements
1530 */
1531proto._filterFindItemElements = function( elems ) {
1532  return utils.filterFindElements( elems, this.options.itemSelector );
1533};
1534
1535/**
1536 * getter method for getting item elements
1537 * @returns {Array} elems - collection of item elements
1538 */
1539proto.getItemElements = function() {
1540  return this.items.map( function( item ) {
1541    return item.element;
1542  });
1543};
1544
1545// ----- init & layout ----- //
1546
1547/**
1548 * lays out all items
1549 */
1550proto.layout = function() {
1551  this._resetLayout();
1552  this._manageStamps();
1553
1554  // don't animate first layout
1555  var layoutInstant = this._getOption('layoutInstant');
1556  var isInstant = layoutInstant !== undefined ?
1557    layoutInstant : !this._isLayoutInited;
1558  this.layoutItems( this.items, isInstant );
1559
1560  // flag for initalized
1561  this._isLayoutInited = true;
1562};
1563
1564// _init is alias for layout
1565proto._init = proto.layout;
1566
1567/**
1568 * logic before any new layout
1569 */
1570proto._resetLayout = function() {
1571  this.getSize();
1572};
1573
1574
1575proto.getSize = function() {
1576  this.size = getSize( this.element );
1577};
1578
1579/**
1580 * get measurement from option, for columnWidth, rowHeight, gutter
1581 * if option is String -> get element from selector string, & get size of element
1582 * if option is Element -> get size of element
1583 * else use option as a number
1584 *
1585 * @param {String} measurement
1586 * @param {String} size - width or height
1587 * @private
1588 */
1589proto._getMeasurement = function( measurement, size ) {
1590  var option = this.options[ measurement ];
1591  var elem;
1592  if ( !option ) {
1593    // default to 0
1594    this[ measurement ] = 0;
1595  } else {
1596    // use option as an element
1597    if ( typeof option == 'string' ) {
1598      elem = this.element.querySelector( option );
1599    } else if ( option instanceof HTMLElement ) {
1600      elem = option;
1601    }
1602    // use size of element, if element
1603    this[ measurement ] = elem ? getSize( elem )[ size ] : option;
1604  }
1605};
1606
1607/**
1608 * layout a collection of item elements
1609 * @api public
1610 */
1611proto.layoutItems = function( items, isInstant ) {
1612  items = this._getItemsForLayout( items );
1613
1614  this._layoutItems( items, isInstant );
1615
1616  this._postLayout();
1617};
1618
1619/**
1620 * get the items to be laid out
1621 * you may want to skip over some items
1622 * @param {Array} items
1623 * @returns {Array} items
1624 */
1625proto._getItemsForLayout = function( items ) {
1626  return items.filter( function( item ) {
1627    return !item.isIgnored;
1628  });
1629};
1630
1631/**
1632 * layout items
1633 * @param {Array} items
1634 * @param {Boolean} isInstant
1635 */
1636proto._layoutItems = function( items, isInstant ) {
1637  this._emitCompleteOnItems( 'layout', items );
1638
1639  if ( !items || !items.length ) {
1640    // no items, emit event with empty array
1641    return;
1642  }
1643
1644  var queue = [];
1645
1646  items.forEach( function( item ) {
1647    // get x/y object from method
1648    var position = this._getItemLayoutPosition( item );
1649    // enqueue
1650    position.item = item;
1651    position.isInstant = isInstant || item.isLayoutInstant;
1652    queue.push( position );
1653  }, this );
1654
1655  this._processLayoutQueue( queue );
1656};
1657
1658/**
1659 * get item layout position
1660 * @param {Outlayer.Item} item
1661 * @returns {Object} x and y position
1662 */
1663proto._getItemLayoutPosition = function( /* item */ ) {
1664  return {
1665    x: 0,
1666    y: 0
1667  };
1668};
1669
1670/**
1671 * iterate over array and position each item
1672 * Reason being - separating this logic prevents 'layout invalidation'
1673 * thx @paul_irish
1674 * @param {Array} queue
1675 */
1676proto._processLayoutQueue = function( queue ) {
1677  this.updateStagger();
1678  queue.forEach( function( obj, i ) {
1679    this._positionItem( obj.item, obj.x, obj.y, obj.isInstant, i );
1680  }, this );
1681};
1682
1683// set stagger from option in milliseconds number
1684proto.updateStagger = function() {
1685  var stagger = this.options.stagger;
1686  if ( stagger === null || stagger === undefined ) {
1687    this.stagger = 0;
1688    return;
1689  }
1690  this.stagger = getMilliseconds( stagger );
1691  return this.stagger;
1692};
1693
1694/**
1695 * Sets position of item in DOM
1696 * @param {Outlayer.Item} item
1697 * @param {Number} x - horizontal position
1698 * @param {Number} y - vertical position
1699 * @param {Boolean} isInstant - disables transitions
1700 */
1701proto._positionItem = function( item, x, y, isInstant, i ) {
1702  if ( isInstant ) {
1703    // if not transition, just set CSS
1704    item.goTo( x, y );
1705  } else {
1706    item.stagger( i * this.stagger );
1707    item.moveTo( x, y );
1708  }
1709};
1710
1711/**
1712 * Any logic you want to do after each layout,
1713 * i.e. size the container
1714 */
1715proto._postLayout = function() {
1716  this.resizeContainer();
1717};
1718
1719proto.resizeContainer = function() {
1720  var isResizingContainer = this._getOption('resizeContainer');
1721  if ( !isResizingContainer ) {
1722    return;
1723  }
1724  var size = this._getContainerSize();
1725  if ( size ) {
1726    this._setContainerMeasure( size.width, true );
1727    this._setContainerMeasure( size.height, false );
1728  }
1729};
1730
1731/**
1732 * Sets width or height of container if returned
1733 * @returns {Object} size
1734 *   @param {Number} width
1735 *   @param {Number} height
1736 */
1737proto._getContainerSize = noop;
1738
1739/**
1740 * @param {Number} measure - size of width or height
1741 * @param {Boolean} isWidth
1742 */
1743proto._setContainerMeasure = function( measure, isWidth ) {
1744  if ( measure === undefined ) {
1745    return;
1746  }
1747
1748  var elemSize = this.size;
1749  // add padding and border width if border box
1750  if ( elemSize.isBorderBox ) {
1751    measure += isWidth ? elemSize.paddingLeft + elemSize.paddingRight +
1752      elemSize.borderLeftWidth + elemSize.borderRightWidth :
1753      elemSize.paddingBottom + elemSize.paddingTop +
1754      elemSize.borderTopWidth + elemSize.borderBottomWidth;
1755  }
1756
1757  measure = Math.max( measure, 0 );
1758  this.element.style[ isWidth ? 'width' : 'height' ] = measure + 'px';
1759};
1760
1761/**
1762 * emit eventComplete on a collection of items events
1763 * @param {String} eventName
1764 * @param {Array} items - Outlayer.Items
1765 */
1766proto._emitCompleteOnItems = function( eventName, items ) {
1767  var _this = this;
1768  function onComplete() {
1769    _this.dispatchEvent( eventName + 'Complete', null, [ items ] );
1770  }
1771
1772  var count = items.length;
1773  if ( !items || !count ) {
1774    onComplete();
1775    return;
1776  }
1777
1778  var doneCount = 0;
1779  function tick() {
1780    doneCount++;
1781    if ( doneCount == count ) {
1782      onComplete();
1783    }
1784  }
1785
1786  // bind callback
1787  items.forEach( function( item ) {
1788    item.once( eventName, tick );
1789  });
1790};
1791
1792/**
1793 * emits events via EvEmitter and jQuery events
1794 * @param {String} type - name of event
1795 * @param {Event} event - original event
1796 * @param {Array} args - extra arguments
1797 */
1798proto.dispatchEvent = function( type, event, args ) {
1799  // add original event to arguments
1800  var emitArgs = event ? [ event ].concat( args ) : args;
1801  this.emitEvent( type, emitArgs );
1802
1803  if ( jQuery ) {
1804    // set this.$element
1805    this.$element = this.$element || jQuery( this.element );
1806    if ( event ) {
1807      // create jQuery event
1808      var $event = jQuery.Event( event );
1809      $event.type = type;
1810      this.$element.trigger( $event, args );
1811    } else {
1812      // just trigger with type if no event available
1813      this.$element.trigger( type, args );
1814    }
1815  }
1816};
1817
1818// -------------------------- ignore & stamps -------------------------- //
1819
1820
1821/**
1822 * keep item in collection, but do not lay it out
1823 * ignored items do not get skipped in layout
1824 * @param {Element} elem
1825 */
1826proto.ignore = function( elem ) {
1827  var item = this.getItem( elem );
1828  if ( item ) {
1829    item.isIgnored = true;
1830  }
1831};
1832
1833/**
1834 * return item to layout collection
1835 * @param {Element} elem
1836 */
1837proto.unignore = function( elem ) {
1838  var item = this.getItem( elem );
1839  if ( item ) {
1840    delete item.isIgnored;
1841  }
1842};
1843
1844/**
1845 * adds elements to stamps
1846 * @param {NodeList, Array, Element, or String} elems
1847 */
1848proto.stamp = function( elems ) {
1849  elems = this._find( elems );
1850  if ( !elems ) {
1851    return;
1852  }
1853
1854  this.stamps = this.stamps.concat( elems );
1855  // ignore
1856  elems.forEach( this.ignore, this );
1857};
1858
1859/**
1860 * removes elements to stamps
1861 * @param {NodeList, Array, or Element} elems
1862 */
1863proto.unstamp = function( elems ) {
1864  elems = this._find( elems );
1865  if ( !elems ){
1866    return;
1867  }
1868
1869  elems.forEach( function( elem ) {
1870    // filter out removed stamp elements
1871    utils.removeFrom( this.stamps, elem );
1872    this.unignore( elem );
1873  }, this );
1874};
1875
1876/**
1877 * finds child elements
1878 * @param {NodeList, Array, Element, or String} elems
1879 * @returns {Array} elems
1880 */
1881proto._find = function( elems ) {
1882  if ( !elems ) {
1883    return;
1884  }
1885  // if string, use argument as selector string
1886  if ( typeof elems == 'string' ) {
1887    elems = this.element.querySelectorAll( elems );
1888  }
1889  elems = utils.makeArray( elems );
1890  return elems;
1891};
1892
1893proto._manageStamps = function() {
1894  if ( !this.stamps || !this.stamps.length ) {
1895    return;
1896  }
1897
1898  this._getBoundingRect();
1899
1900  this.stamps.forEach( this._manageStamp, this );
1901};
1902
1903// update boundingLeft / Top
1904proto._getBoundingRect = function() {
1905  // get bounding rect for container element
1906  var boundingRect = this.element.getBoundingClientRect();
1907  var size = this.size;
1908  this._boundingRect = {
1909    left: boundingRect.left + size.paddingLeft + size.borderLeftWidth,
1910    top: boundingRect.top + size.paddingTop + size.borderTopWidth,
1911    right: boundingRect.right - ( size.paddingRight + size.borderRightWidth ),
1912    bottom: boundingRect.bottom - ( size.paddingBottom + size.borderBottomWidth )
1913  };
1914};
1915
1916/**
1917 * @param {Element} stamp
1918**/
1919proto._manageStamp = noop;
1920
1921/**
1922 * get x/y position of element relative to container element
1923 * @param {Element} elem
1924 * @returns {Object} offset - has left, top, right, bottom
1925 */
1926proto._getElementOffset = function( elem ) {
1927  var boundingRect = elem.getBoundingClientRect();
1928  var thisRect = this._boundingRect;
1929  var size = getSize( elem );
1930  var offset = {
1931    left: boundingRect.left - thisRect.left - size.marginLeft,
1932    top: boundingRect.top - thisRect.top - size.marginTop,
1933    right: thisRect.right - boundingRect.right - size.marginRight,
1934    bottom: thisRect.bottom - boundingRect.bottom - size.marginBottom
1935  };
1936  return offset;
1937};
1938
1939// -------------------------- resize -------------------------- //
1940
1941// enable event handlers for listeners
1942// i.e. resize -> onresize
1943proto.handleEvent = utils.handleEvent;
1944
1945/**
1946 * Bind layout to window resizing
1947 */
1948proto.bindResize = function() {
1949  window.addEventListener( 'resize', this );
1950  this.isResizeBound = true;
1951};
1952
1953/**
1954 * Unbind layout to window resizing
1955 */
1956proto.unbindResize = function() {
1957  window.removeEventListener( 'resize', this );
1958  this.isResizeBound = false;
1959};
1960
1961proto.onresize = function() {
1962  this.resize();
1963};
1964
1965utils.debounceMethod( Outlayer, 'onresize', 100 );
1966
1967proto.resize = function() {
1968  // don't trigger if size did not change
1969  // or if resize was unbound. See #9
1970  if ( !this.isResizeBound || !this.needsResizeLayout() ) {
1971    return;
1972  }
1973
1974  this.layout();
1975};
1976
1977/**
1978 * check if layout is needed post layout
1979 * @returns Boolean
1980 */
1981proto.needsResizeLayout = function() {
1982  var size = getSize( this.element );
1983  // check that this.size and size are there
1984  // IE8 triggers resize on body size change, so they might not be
1985  var hasSizes = this.size && size;
1986  return hasSizes && size.innerWidth !== this.size.innerWidth;
1987};
1988
1989// -------------------------- methods -------------------------- //
1990
1991/**
1992 * add items to Outlayer instance
1993 * @param {Array or NodeList or Element} elems
1994 * @returns {Array} items - Outlayer.Items
1995**/
1996proto.addItems = function( elems ) {
1997  var items = this._itemize( elems );
1998  // add items to collection
1999  if ( items.length ) {
2000    this.items = this.items.concat( items );
2001  }
2002  return items;
2003};
2004
2005/**
2006 * Layout newly-appended item elements
2007 * @param {Array or NodeList or Element} elems
2008 */
2009proto.appended = function( elems ) {
2010  var items = this.addItems( elems );
2011  if ( !items.length ) {
2012    return;
2013  }
2014  // layout and reveal just the new items
2015  this.layoutItems( items, true );
2016  this.reveal( items );
2017};
2018
2019/**
2020 * Layout prepended elements
2021 * @param {Array or NodeList or Element} elems
2022 */
2023proto.prepended = function( elems ) {
2024  var items = this._itemize( elems );
2025  if ( !items.length ) {
2026    return;
2027  }
2028  // add items to beginning of collection
2029  var previousItems = this.items.slice(0);
2030  this.items = items.concat( previousItems );
2031  // start new layout
2032  this._resetLayout();
2033  this._manageStamps();
2034  // layout new stuff without transition
2035  this.layoutItems( items, true );
2036  this.reveal( items );
2037  // layout previous items
2038  this.layoutItems( previousItems );
2039};
2040
2041/**
2042 * reveal a collection of items
2043 * @param {Array of Outlayer.Items} items
2044 */
2045proto.reveal = function( items ) {
2046  this._emitCompleteOnItems( 'reveal', items );
2047  if ( !items || !items.length ) {
2048    return;
2049  }
2050  var stagger = this.updateStagger();
2051  items.forEach( function( item, i ) {
2052    item.stagger( i * stagger );
2053    item.reveal();
2054  });
2055};
2056
2057/**
2058 * hide a collection of items
2059 * @param {Array of Outlayer.Items} items
2060 */
2061proto.hide = function( items ) {
2062  this._emitCompleteOnItems( 'hide', items );
2063  if ( !items || !items.length ) {
2064    return;
2065  }
2066  var stagger = this.updateStagger();
2067  items.forEach( function( item, i ) {
2068    item.stagger( i * stagger );
2069    item.hide();
2070  });
2071};
2072
2073/**
2074 * reveal item elements
2075 * @param {Array}, {Element}, {NodeList} items
2076 */
2077proto.revealItemElements = function( elems ) {
2078  var items = this.getItems( elems );
2079  this.reveal( items );
2080};
2081
2082/**
2083 * hide item elements
2084 * @param {Array}, {Element}, {NodeList} items
2085 */
2086proto.hideItemElements = function( elems ) {
2087  var items = this.getItems( elems );
2088  this.hide( items );
2089};
2090
2091/**
2092 * get Outlayer.Item, given an Element
2093 * @param {Element} elem
2094 * @param {Function} callback
2095 * @returns {Outlayer.Item} item
2096 */
2097proto.getItem = function( elem ) {
2098  // loop through items to get the one that matches
2099  for ( var i=0; i < this.items.length; i++ ) {
2100    var item = this.items[i];
2101    if ( item.element == elem ) {
2102      // return item
2103      return item;
2104    }
2105  }
2106};
2107
2108/**
2109 * get collection of Outlayer.Items, given Elements
2110 * @param {Array} elems
2111 * @returns {Array} items - Outlayer.Items
2112 */
2113proto.getItems = function( elems ) {
2114  elems = utils.makeArray( elems );
2115  var items = [];
2116  elems.forEach( function( elem ) {
2117    var item = this.getItem( elem );
2118    if ( item ) {
2119      items.push( item );
2120    }
2121  }, this );
2122
2123  return items;
2124};
2125
2126/**
2127 * remove element(s) from instance and DOM
2128 * @param {Array or NodeList or Element} elems
2129 */
2130proto.remove = function( elems ) {
2131  var removeItems = this.getItems( elems );
2132
2133  this._emitCompleteOnItems( 'remove', removeItems );
2134
2135  // bail if no items to remove
2136  if ( !removeItems || !removeItems.length ) {
2137    return;
2138  }
2139

2140  removeItems.forEach( function( item ) {
2141    item.remove();
2142    // remove item from collection
2143    utils.removeFrom( this.items, item );
2144  }, this );
2145};
2146
2147// ----- destroy ----- //
2148
2149// remove and disable Outlayer instance
2150proto.destroy = function() {
2151  // clean up dynamic styles
2152  var style = this.element.style;
2153  style.height = '';
2154  style.position = '';
2155  style.width = '';
2156  // destroy items
2157  this.items.forEach( function( item ) {
2158    item.destroy();
2159  });
2160
2161  this.unbindResize();
2162
2163  var id = this.element.outlayerGUID;
2164  delete instances[ id ]; // remove reference to instance by id
2165  delete this.element.outlayerGUID;
2166  // remove data for jQuery
2167  if ( jQuery ) {
2168    jQuery.removeData( this.element, this.constructor.namespace );
2169  }
2170
2171};
2172
2173// -------------------------- data -------------------------- //
2174
2175/**
2176 * get Outlayer instance from element
2177 * @param {Element} elem
2178 * @returns {Outlayer}
2179 */
2180Outlayer.data = function( elem ) {
2181  elem = utils.getQueryElement( elem );
2182  var id = elem && elem.outlayerGUID;
2183  return id && instances[ id ];
2184};
2185
2186
2187// -------------------------- create Outlayer class -------------------------- //
2188
2189/**
2190 * create a layout class
2191 * @param {String} namespace
2192 */
2193Outlayer.create = function( namespace, options ) {
2194  // sub-class Outlayer
2195  var Layout = subclass( Outlayer );
2196  // apply new options and compatOptions
2197  Layout.defaults = utils.extend( {}, Outlayer.defaults );
2198  utils.extend( Layout.defaults, options );
2199  Layout.compatOptions = utils.extend( {}, Outlayer.compatOptions  );
2200
2201  Layout.namespace = namespace;
2202
2203  Layout.data = Outlayer.data;
2204
2205  // sub-class Item
2206  Layout.Item = subclass( Item );
2207
2208  // -------------------------- declarative -------------------------- //
2209
2210  utils.htmlInit( Layout, namespace );
2211
2212  // -------------------------- jQuery bridge -------------------------- //
2213
2214  // make into jQuery plugin
2215  if ( jQuery && jQuery.bridget ) {
2216    jQuery.bridget( namespace, Layout );
2217  }
2218
2219  return Layout;
2220};
2221
2222function subclass( Parent ) {
2223  function SubClass() {
2224    Parent.apply( this, arguments );
2225  }
2226
2227  SubClass.prototype = Object.create( Parent.prototype );
2228  SubClass.prototype.constructor = SubClass;
2229
2230  return SubClass;
2231}
2232
2233// ----- helpers ----- //
2234
2235// how many milliseconds are in each unit
2236var msUnits = {
2237  ms: 1,
2238  s: 1000
2239};
2240
2241// munge time-like parameter into millisecond number
2242// '0.4s' -> 40
2243function getMilliseconds( time ) {
2244  if ( typeof time == 'number' ) {
2245    return time;
2246  }
2247  var matches = time.match( /(^\d*\.?\d*)(\w*)/ );
2248  var num = matches && matches[1];
2249  var unit = matches && matches[2];
2250  if ( !num.length ) {
2251    return 0;
2252  }
2253  num = parseFloat( num );
2254  var mult = msUnits[ unit ] || 1;
2255  return num * mult;
2256}
2257
2258// ----- fin ----- //
2259
2260// back in global
2261Outlayer.Item = Item;
2262
2263return Outlayer;
2264
2265}));
2266
2267/**
2268 * Isotope Item
2269**/
2270
2271( function( window, factory ) {
2272  // universal module definition
2273  /* jshint strict: false */ /*globals define, module, require */
2274  if ( typeof define == 'function' && define.amd ) {
2275    // AMD
2276    define( 'isotope-layout/js/item',[
2277        'outlayer/outlayer'
2278      ],
2279      factory );
2280  } else if ( typeof module == 'object' && module.exports ) {
2281    // CommonJS
2282    module.exports = factory(
2283      require('outlayer')
2284    );
2285  } else {
2286    // browser global
2287    window.Isotope = window.Isotope || {};
2288    window.Isotope.Item = factory(
2289      window.Outlayer
2290    );
2291  }
2292
2293}( window, function factory( Outlayer ) {
2294'use strict';
2295
2296// -------------------------- Item -------------------------- //
2297
2298// sub-class Outlayer Item
2299function Item() {
2300  Outlayer.Item.apply( this, arguments );
2301}
2302
2303var proto = Item.prototype = Object.create( Outlayer.Item.prototype );
2304
2305var _create = proto._create;
2306proto._create = function() {
2307  // assign id, used for original-order sorting
2308  this.id = this.layout.itemGUID++;
2309  _create.call( this );
2310  this.sortData = {};
2311};
2312
2313proto.updateSortData = function() {
2314  if ( this.isIgnored ) {
2315    return;
2316  }
2317  // default sorters
2318  this.sortData.id = this.id;
2319  // for backward compatibility
2320  this.sortData['original-order'] = this.id;
2321  this.sortData.random = Math.random();
2322  // go thru getSortData obj and apply the sorters
2323  var getSortData = this.layout.options.getSortData;
2324  var sorters = this.layout._sorters;
2325  for ( var key in getSortData ) {
2326    var sorter = sorters[ key ];
2327    this.sortData[ key ] = sorter( this.element, this );
2328  }
2329};
2330
2331var _destroy = proto.destroy;
2332proto.destroy = function() {
2333  // call super
2334  _destroy.apply( this, arguments );
2335  // reset display, #741
2336  this.css({
2337    display: ''
2338  });
2339};
2340
2341return Item;
2342
2343}));
2344
2345/**
2346 * Isotope LayoutMode
2347 */
2348
2349( function( window, factory ) {
2350  // universal module definition
2351  /* jshint strict: false */ /*globals define, module, require */
2352  if ( typeof define == 'function' && define.amd ) {
2353    // AMD
2354    define( 'isotope-layout/js/layout-mode',[
2355        'get-size/get-size',
2356        'outlayer/outlayer'
2357      ],
2358      factory );
2359  } else if ( typeof module == 'object' && module.exports ) {
2360    // CommonJS
2361    module.exports = factory(
2362      require('get-size'),
2363      require('outlayer')
2364    );
2365  } else {
2366    // browser global
2367    window.Isotope = window.Isotope || {};
2368    window.Isotope.LayoutMode = factory(
2369      window.getSize,
2370      window.Outlayer
2371    );
2372  }
2373
2374}( window, function factory( getSize, Outlayer ) {
2375  'use strict';
2376
2377  // layout mode class
2378  function LayoutMode( isotope ) {
2379    this.isotope = isotope;
2380    // link properties
2381    if ( isotope ) {
2382      this.options = isotope.options[ this.namespace ];
2383      this.element = isotope.element;
2384      this.items = isotope.filteredItems;
2385      this.size = isotope.size;
2386    }
2387  }
2388
2389  var proto = LayoutMode.prototype;
2390
2391  /**
2392   * some methods should just defer to default Outlayer method
2393   * and reference the Isotope instance as `this`
2394  **/
2395  var facadeMethods = [
2396    '_resetLayout',
2397    '_getItemLayoutPosition',
2398    '_manageStamp',
2399    '_getContainerSize',
2400    '_getElementOffset',
2401    'needsResizeLayout',
2402    '_getOption'
2403  ];
2404
2405  facadeMethods.forEach( function( methodName ) {
2406    proto[ methodName ] = function() {
2407      return Outlayer.prototype[ methodName ].apply( this.isotope, arguments );
2408    };
2409  });
2410
2411  // -----  ----- //
2412
2413  // for horizontal layout modes, check vertical size
2414  proto.needsVerticalResizeLayout = function() {
2415    // don't trigger if size did not change
2416    var size = getSize( this.isotope.element );
2417    // check that this.size and size are there
2418    // IE8 triggers resize on body size change, so they might not be
2419    var hasSizes = this.isotope.size && size;
2420    return hasSizes && size.innerHeight != this.isotope.size.innerHeight;
2421  };
2422
2423  // ----- measurements ----- //
2424
2425  proto._getMeasurement = function() {
2426    this.isotope._getMeasurement.apply( this, arguments );
2427  };
2428
2429  proto.getColumnWidth = function() {
2430    this.getSegmentSize( 'column', 'Width' );
2431  };
2432
2433  proto.getRowHeight = function() {
2434    this.getSegmentSize( 'row', 'Height' );
2435  };
2436
2437  /**
2438   * get columnWidth or rowHeight
2439   * segment: 'column' or 'row'
2440   * size 'Width' or 'Height'
2441  **/
2442  proto.getSegmentSize = function( segment, size ) {
2443    var segmentName = segment + size;
2444    var outerSize = 'outer' + size;
2445    // columnWidth / outerWidth // rowHeight / outerHeight
2446    this._getMeasurement( segmentName, outerSize );
2447    // got rowHeight or columnWidth, we can chill
2448    if ( this[ segmentName ] ) {
2449      return;
2450    }
2451    // fall back to item of first element
2452    var firstItemSize = this.getFirstItemSize();
2453    this[ segmentName ] = firstItemSize && firstItemSize[ outerSize ] ||
2454      // or size of container
2455      this.isotope.size[ 'inner' + size ];
2456  };
2457
2458  proto.getFirstItemSize = function() {
2459    var firstItem = this.isotope.filteredItems[0];
2460    return firstItem && firstItem.element && getSize( firstItem.element );
2461  };
2462
2463  // ----- methods that should reference isotope ----- //
2464
2465  proto.layout = function() {
2466    this.isotope.layout.apply( this.isotope, arguments );
2467  };
2468
2469  proto.getSize = function() {
2470    this.isotope.getSize();
2471    this.size = this.isotope.size;
2472  };
2473
2474  // -------------------------- create -------------------------- //
2475
2476  LayoutMode.modes = {};
2477
2478  LayoutMode.create = function( namespace, options ) {
2479
2480    function Mode() {
2481      LayoutMode.apply( this, arguments );
2482    }
2483
2484    Mode.prototype = Object.create( proto );
2485    Mode.prototype.constructor = Mode;
2486
2487    // default options
2488    if ( options ) {
2489      Mode.options = options;
2490    }
2491
2492    Mode.prototype.namespace = namespace;
2493    // register in Isotope
2494    LayoutMode.modes[ namespace ] = Mode;
2495
2496    return Mode;
2497  };
2498
2499  return LayoutMode;
2500
2501}));
2502
2503/*!
2504 * Masonry v4.2.1
2505 * Cascading grid layout library
2506 * https://masonry.desandro.com
2507 * MIT License
2508 * by David DeSandro
2509 */
2510
2511( function( window, factory ) {
2512  // universal module definition
2513  /* jshint strict: false */ /*globals define, module, require */
2514  if ( typeof define == 'function' && define.amd ) {
2515    // AMD
2516    define( 'masonry-layout/masonry',[
2517        'outlayer/outlayer',
2518        'get-size/get-size'
2519      ],
2520      factory );
2521  } else if ( typeof module == 'object' && module.exports ) {
2522    // CommonJS
2523    module.exports = factory(
2524      require('outlayer'),
2525      require('get-size')
2526    );
2527  } else {
2528    // browser global
2529    window.Masonry = factory(
2530      window.Outlayer,
2531      window.getSize
2532    );
2533  }
2534
2535}( window, function factory( Outlayer, getSize ) {
2536
2537
2538
2539// -------------------------- masonryDefinition -------------------------- //
2540
2541  // create an Outlayer layout class
2542  var Masonry = Outlayer.create('masonry');
2543  // isFitWidth -> fitWidth
2544  Masonry.compatOptions.fitWidth = 'isFitWidth';
2545
2546  var proto = Masonry.prototype;
2547
2548  proto._resetLayout = function() {
2549    this.getSize();
2550    this._getMeasurement( 'columnWidth', 'outerWidth' );
2551    this._getMeasurement( 'gutter', 'outerWidth' );
2552    this.measureColumns();
2553
2554    // reset column Y
2555    this.colYs = [];
2556    for ( var i=0; i < this.cols; i++ ) {
2557      this.colYs.push( 0 );
2558    }
2559
2560    this.maxY = 0;
2561    this.horizontalColIndex = 0;
2562  };
2563
2564  proto.measureColumns = function() {
2565    this.getContainerWidth();
2566    // if columnWidth is 0, default to outerWidth of first item
2567    if ( !this.columnWidth ) {
2568      var firstItem = this.items[0];
2569      var firstItemElem = firstItem && firstItem.element;
2570      // columnWidth fall back to item of first element
2571      this.columnWidth = firstItemElem && getSize( firstItemElem ).outerWidth ||
2572        // if first elem has no width, default to size of container
2573        this.containerWidth;
2574    }
2575
2576    var columnWidth = this.columnWidth += this.gutter;
2577
2578    // calculate columns
2579    var containerWidth = this.containerWidth + this.gutter;
2580    var cols = containerWidth / columnWidth;
2581    // fix rounding errors, typically with gutters
2582    var excess = columnWidth - containerWidth % columnWidth;
2583    // if overshoot is less than a pixel, round up, otherwise floor it
2584    var mathMethod = excess && excess < 1 ? 'round' : 'floor';
2585    cols = Math[ mathMethod ]( cols );
2586    this.cols = Math.max( cols, 1 );
2587  };
2588
2589  proto.getContainerWidth = function() {
2590    // container is parent if fit width
2591    var isFitWidth = this._getOption('fitWidth');
2592    var container = isFitWidth ? this.element.parentNode : this.element;
2593    // check that this.size and size are there
2594    // IE8 triggers resize on body size change, so they might not be
2595    var size = getSize( container );
2596    this.containerWidth = size && size.innerWidth;
2597  };
2598
2599  proto._getItemLayoutPosition = function( item ) {
2600    item.getSize();
2601    // how many columns does this brick span
2602    var remainder = item.size.outerWidth % this.columnWidth;
2603    var mathMethod = remainder && remainder < 1 ? 'round' : 'ceil';
2604    // round if off by 1 pixel, otherwise use ceil
2605    var colSpan = Math[ mathMethod ]( item.size.outerWidth / this.columnWidth );
2606    colSpan = Math.min( colSpan, this.cols );
2607    // use horizontal or top column position
2608    var colPosMethod = this.options.horizontalOrder ?
2609      '_getHorizontalColPosition' : '_getTopColPosition';
2610    var colPosition = this[ colPosMethod ]( colSpan, item );
2611    // position the brick
2612    var position = {
2613      x: this.columnWidth * colPosition.col,
2614      y: colPosition.y
2615    };
2616    // apply setHeight to necessary columns
2617    var setHeight = colPosition.y + item.size.outerHeight;
2618    var setMax = colSpan + colPosition.col;
2619    for ( var i = colPosition.col; i < setMax; i++ ) {
2620      this.colYs[i] = setHeight;
2621    }
2622
2623    return position;
2624  };
2625
2626  proto._getTopColPosition = function( colSpan ) {
2627    var colGroup = this._getTopColGroup( colSpan );
2628    // get the minimum Y value from the columns
2629    var minimumY = Math.min.apply( Math, colGroup );
2630
2631    return {
2632      col: colGroup.indexOf( minimumY ),
2633      y: minimumY,
2634    };
2635  };
2636
2637  /**
2638   * @param {Number} colSpan - number of columns the element spans
2639   * @returns {Array} colGroup
2640   */
2641  proto._getTopColGroup = function( colSpan ) {
2642    if ( colSpan < 2 ) {
2643      // if brick spans only one column, use all the column Ys
2644      return this.colYs;
2645    }
2646
2647    var colGroup = [];
2648    // how many different places could this brick fit horizontally
2649    var groupCount = this.cols + 1 - colSpan;
2650    // for each group potential horizontal position
2651    for ( var i = 0; i < groupCount; i++ ) {
2652      colGroup[i] = this._getColGroupY( i, colSpan );
2653    }
2654    return colGroup;
2655  };
2656
2657  proto._getColGroupY = function( col, colSpan ) {
2658    if ( colSpan < 2 ) {
2659      return this.colYs[ col ];
2660    }
2661    // make an array of colY values for that one group
2662    var groupColYs = this.colYs.slice( col, col + colSpan );
2663    // and get the max value of the array
2664    return Math.max.apply( Math, groupColYs );
2665  };
2666
2667  // get column position based on horizontal index. #873
2668  proto._getHorizontalColPosition = function( colSpan, item ) {
2669    var col = this.horizontalColIndex % this.cols;
2670    var isOver = colSpan > 1 && col + colSpan > this.cols;
2671    // shift to next row if item can't fit on current row
2672    col = isOver ? 0 : col;
2673    // don't let zero-size items take up space
2674    var hasSize = item.size.outerWidth && item.size.outerHeight;
2675    this.horizontalColIndex = hasSize ? col + colSpan : this.horizontalColIndex;
2676
2677    return {
2678      col: col,
2679      y: this._getColGroupY( col, colSpan ),
2680    };
2681  };
2682
2683  proto._manageStamp = function( stamp ) {
2684    var stampSize = getSize( stamp );
2685    var offset = this._getElementOffset( stamp );
2686    // get the columns that this stamp affects
2687    var isOriginLeft = this._getOption('originLeft');
2688    var firstX = isOriginLeft ? offset.left : offset.right;
2689    var lastX = firstX + stampSize.outerWidth;
2690    var firstCol = Math.floor( firstX / this.columnWidth );
2691    firstCol = Math.max( 0, firstCol );
2692    var lastCol = Math.floor( lastX / this.columnWidth );
2693    // lastCol should not go over if multiple of columnWidth #425
2694    lastCol -= lastX % this.columnWidth ? 0 : 1;
2695    lastCol = Math.min( this.cols - 1, lastCol );
2696    // set colYs to bottom of the stamp
2697
2698    var isOriginTop = this._getOption('originTop');
2699    var stampMaxY = ( isOriginTop ? offset.top : offset.bottom ) +
2700      stampSize.outerHeight;
2701    for ( var i = firstCol; i <= lastCol; i++ ) {
2702      this.colYs[i] = Math.max( stampMaxY, this.colYs[i] );
2703    }
2704  };
2705
2706  proto._getContainerSize = function() {
2707    this.maxY = Math.max.apply( Math, this.colYs );
2708    var size = {
2709      height: this.maxY
2710    };
2711
2712    if ( this._getOption('fitWidth') ) {
2713      size.width = this._getContainerFitWidth();
2714    }
2715
2716    return size;
2717  };
2718
2719  proto._getContainerFitWidth = function() {
2720    var unusedCols = 0;
2721    // count unused columns
2722    var i = this.cols;
2723    while ( --i ) {
2724      if ( this.colYs[i] !== 0 ) {
2725        break;
2726      }
2727      unusedCols++;
2728    }
2729    // fit container to columns that have been used
2730    return ( this.cols - unusedCols ) * this.columnWidth - this.gutter;
2731  };
2732
2733  proto.needsResizeLayout = function() {
2734    var previousWidth = this.containerWidth;
2735    this.getContainerWidth();
2736    return previousWidth != this.containerWidth;
2737  };
2738
2739  return Masonry;
2740
2741}));
2742
2743/*!
2744 * Masonry layout mode
2745 * sub-classes Masonry
2746 * https://masonry.desandro.com
2747 */
2748
2749( function( window, factory ) {
2750  // universal module definition
2751  /* jshint strict: false */ /*globals define, module, require */
2752  if ( typeof define == 'function' && define.amd ) {
2753    // AMD
2754    define( 'isotope-layout/js/layout-modes/masonry',[
2755        '../layout-mode',
2756        'masonry-layout/masonry'
2757      ],
2758      factory );
2759  } else if ( typeof module == 'object' && module.exports ) {
2760    // CommonJS
2761    module.exports = factory(
2762      require('../layout-mode'),
2763      require('masonry-layout')
2764    );
2765  } else {
2766    // browser global
2767    factory(
2768      window.Isotope.LayoutMode,
2769      window.Masonry
2770    );
2771  }
2772
2773}( window, function factory( LayoutMode, Masonry ) {
2774'use strict';
2775
2776// -------------------------- masonryDefinition -------------------------- //
2777
2778  // create an Outlayer layout class
2779  var MasonryMode = LayoutMode.create('masonry');
2780
2781  var proto = MasonryMode.prototype;
2782
2783  var keepModeMethods = {
2784    _getElementOffset: true,
2785    layout: true,
2786    _getMeasurement: true
2787  };
2788
2789  // inherit Masonry prototype
2790  for ( var method in Masonry.prototype ) {
2791    // do not inherit mode methods
2792    if ( !keepModeMethods[ method ] ) {
2793      proto[ method ] = Masonry.prototype[ method ];
2794    }
2795  }
2796
2797  var measureColumns = proto.measureColumns;
2798  proto.measureColumns = function() {
2799    // set items, used if measuring first item
2800    this.items = this.isotope.filteredItems;
2801    measureColumns.call( this );
2802  };
2803
2804  // point to mode options for fitWidth
2805  var _getOption = proto._getOption;
2806  proto._getOption = function( option ) {
2807    if ( option == 'fitWidth' ) {
2808      return this.options.isFitWidth !== undefined ?
2809        this.options.isFitWidth : this.options.fitWidth;
2810    }
2811    return _getOption.apply( this.isotope, arguments );
2812  };
2813
2814  return MasonryMode;
2815
2816}));
2817
2818/**
2819 * fitRows layout mode
2820 */
2821
2822( function( window, factory ) {
2823  // universal module definition
2824  /* jshint strict: false */ /*globals define, module, require */
2825  if ( typeof define == 'function' && define.amd ) {
2826    // AMD
2827    define( 'isotope-layout/js/layout-modes/fit-rows',[
2828        '../layout-mode'
2829      ],
2830      factory );
2831  } else if ( typeof exports == 'object' ) {
2832    // CommonJS
2833    module.exports = factory(
2834      require('../layout-mode')
2835    );
2836  } else {
2837    // browser global
2838    factory(
2839      window.Isotope.LayoutMode
2840    );
2841  }
2842
2843}( window, function factory( LayoutMode ) {
2844'use strict';
2845
2846var FitRows = LayoutMode.create('fitRows');
2847
2848var proto = FitRows.prototype;
2849
2850proto._resetLayout = function() {
2851  this.x = 0;
2852  this.y = 0;
2853  this.maxY = 0;
2854  this._getMeasurement( 'gutter', 'outerWidth' );
2855};
2856
2857proto._getItemLayoutPosition = function( item ) {
2858  item.getSize();
2859
2860  var itemWidth = item.size.outerWidth + this.gutter;
2861  // if this element cannot fit in the current row
2862  var containerWidth = this.isotope.size.innerWidth + this.gutter;
2863  if ( this.x !== 0 && itemWidth + this.x > containerWidth ) {
2864    this.x = 0;
2865    this.y = this.maxY;
2866  }
2867
2868  var position = {
2869    x: this.x,
2870    y: this.y
2871  };
2872
2873  this.maxY = Math.max( this.maxY, this.y + item.size.outerHeight );
2874  this.x += itemWidth;
2875
2876  return position;
2877};
2878
2879proto._getContainerSize = function() {
2880  return { height: this.maxY };
2881};
2882
2883return FitRows;
2884
2885}));
2886
2887/**
2888 * vertical layout mode
2889 */
2890
2891( function( window, factory ) {
2892  // universal module definition
2893  /* jshint strict: false */ /*globals define, module, require */
2894  if ( typeof define == 'function' && define.amd ) {
2895    // AMD
2896    define( 'isotope-layout/js/layout-modes/vertical',[
2897        '../layout-mode'
2898      ],
2899      factory );
2900  } else if ( typeof module == 'object' && module.exports ) {
2901    // CommonJS
2902    module.exports = factory(
2903      require('../layout-mode')
2904    );
2905  } else {
2906    // browser global
2907    factory(
2908      window.Isotope.LayoutMode
2909    );
2910  }
2911
2912}( window, function factory( LayoutMode ) {
2913'use strict';
2914
2915var Vertical = LayoutMode.create( 'vertical', {
2916  horizontalAlignment: 0
2917});
2918
2919var proto = Vertical.prototype;
2920
2921proto._resetLayout = function() {
2922  this.y = 0;
2923};
2924
2925proto._getItemLayoutPosition = function( item ) {
2926  item.getSize();
2927  var x = ( this.isotope.size.innerWidth - item.size.outerWidth ) *
2928    this.options.horizontalAlignment;
2929  var y = this.y;
2930  this.y += item.size.outerHeight;
2931  return { x: x, y: y };
2932};
2933
2934proto._getContainerSize = function() {
2935  return { height: this.y };
2936};
2937
2938return Vertical;
2939
2940}));
2941
2942/*!
2943 * Isotope v3.0.6
2944 *
2945 * Licensed GPLv3 for open source use
2946 * or Isotope Commercial License for commercial use
2947 *
2948 * https://isotope.metafizzy.co
2949 * Copyright 2010-2018 Metafizzy
2950 */
2951
2952( function( window, factory ) {
2953  // universal module definition
2954  /* jshint strict: false */ /*globals define, module, require */
2955  if ( typeof define == 'function' && define.amd ) {
2956    // AMD
2957    define( [
2958        'outlayer/outlayer',
2959        'get-size/get-size',
2960        'desandro-matches-selector/matches-selector',
2961        'fizzy-ui-utils/utils',
2962        'isotope-layout/js/item',
2963        'isotope-layout/js/layout-mode',
2964        // include default layout modes
2965        'isotope-layout/js/layout-modes/masonry',
2966        'isotope-layout/js/layout-modes/fit-rows',
2967        'isotope-layout/js/layout-modes/vertical'
2968      ],
2969      function( Outlayer, getSize, matchesSelector, utils, Item, LayoutMode ) {
2970        return factory( window, Outlayer, getSize, matchesSelector, utils, Item, LayoutMode );
2971      });
2972  } else if ( typeof module == 'object' && module.exports ) {
2973    // CommonJS
2974    module.exports = factory(
2975      window,
2976      require('outlayer'),
2977      require('get-size'),
2978      require('desandro-matches-selector'),
2979      require('fizzy-ui-utils'),
2980      require('isotope-layout/js/item'),
2981      require('isotope-layout/js/layout-mode'),
2982      // include default layout modes
2983      require('isotope-layout/js/layout-modes/masonry'),
2984      require('isotope-layout/js/layout-modes/fit-rows'),
2985      require('isotope-layout/js/layout-modes/vertical')
2986    );
2987  } else {
2988    // browser global
2989    window.Isotope = factory(
2990      window,
2991      window.Outlayer,
2992      window.getSize,
2993      window.matchesSelector,
2994      window.fizzyUIUtils,
2995      window.Isotope.Item,
2996      window.Isotope.LayoutMode
2997    );
2998  }
2999
3000}( window, function factory( window, Outlayer, getSize, matchesSelector, utils,
3001  Item, LayoutMode ) {
3002
3003
3004
3005// -------------------------- vars -------------------------- //
3006
3007var jQuery = window.jQuery;
3008
3009// -------------------------- helpers -------------------------- //
3010
3011var trim = String.prototype.trim ?
3012  function( str ) {
3013    return str.trim();
3014  } :
3015  function( str ) {
3016    return str.replace( /^\s+|\s+$/g, '' );
3017  };
3018
3019// -------------------------- isotopeDefinition -------------------------- //
3020
3021  // create an Outlayer layout class
3022  var Isotope = Outlayer.create( 'isotope', {
3023    layoutMode: 'masonry',
3024    isJQueryFiltering: true,
3025    sortAscending: true
3026  });
3027
3028  Isotope.Item = Item;
3029  Isotope.LayoutMode = LayoutMode;
3030
3031  var proto = Isotope.prototype;
3032
3033  proto._create = function() {
3034    this.itemGUID = 0;
3035    // functions that sort items
3036    this._sorters = {};
3037    this._getSorters();
3038    // call super
3039    Outlayer.prototype._create.call( this );
3040
3041    // create layout modes
3042    this.modes = {};
3043    // start filteredItems with all items
3044    this.filteredItems = this.items;
3045    // keep of track of sortBys
3046    this.sortHistory = [ 'original-order' ];
3047    // create from registered layout modes
3048    for ( var name in LayoutMode.modes ) {
3049      this._initLayoutMode( name );
3050    }
3051  };
3052
3053  proto.reloadItems = function() {
3054    // reset item ID counter
3055    this.itemGUID = 0;
3056    // call super
3057    Outlayer.prototype.reloadItems.call( this );
3058  };
3059
3060  proto._itemize = function() {
3061    var items = Outlayer.prototype._itemize.apply( this, arguments );
3062    // assign ID for original-order
3063    for ( var i=0; i < items.length; i++ ) {
3064      var item = items[i];
3065      item.id = this.itemGUID++;
3066    }
3067    this._updateItemsSortData( items );
3068    return items;
3069  };
3070
3071
3072  // -------------------------- layout -------------------------- //
3073
3074  proto._initLayoutMode = function( name ) {
3075    var Mode = LayoutMode.modes[ name ];
3076    // set mode options
3077    // HACK extend initial options, back-fill in default options
3078    var initialOpts = this.options[ name ] || {};
3079    this.options[ name ] = Mode.options ?
3080      utils.extend( Mode.options, initialOpts ) : initialOpts;
3081    // init layout mode instance
3082    this.modes[ name ] = new Mode( this );
3083  };
3084
3085
3086  proto.layout = function() {
3087    // if first time doing layout, do all magic
3088    if ( !this._isLayoutInited && this._getOption('initLayout') ) {
3089      this.arrange();
3090      return;
3091    }
3092    this._layout();
3093  };
3094
3095  // private method to be used in layout() & magic()
3096  proto._layout = function() {
3097    // don't animate first layout
3098    var isInstant = this._getIsInstant();
3099    // layout flow
3100    this._resetLayout();
3101    this._manageStamps();
3102    this.layoutItems( this.filteredItems, isInstant );
3103
3104    // flag for initalized
3105    this._isLayoutInited = true;
3106  };
3107
3108  // filter + sort + layout
3109  proto.arrange = function( opts ) {
3110    // set any options pass
3111    this.option( opts );
3112    this._getIsInstant();
3113    // filter, sort, and layout
3114
3115    // filter
3116    var filtered = this._filter( this.items );
3117    this.filteredItems = filtered.matches;
3118
3119    this._bindArrangeComplete();
3120
3121    if ( this._isInstant ) {
3122      this._noTransition( this._hideReveal, [ filtered ] );
3123    } else {
3124      this._hideReveal( filtered );
3125    }
3126
3127    this._sort();
3128    this._layout();
3129  };
3130  // alias to _init for main plugin method
3131  proto._init = proto.arrange;
3132
3133  proto._hideReveal = function( filtered ) {
3134    this.reveal( filtered.needReveal );
3135    this.hide( filtered.needHide );
3136  };
3137
3138  // HACK
3139  // Don't animate/transition first layout
3140  // Or don't animate/transition other layouts
3141  proto._getIsInstant = function() {
3142    var isLayoutInstant = this._getOption('layoutInstant');
3143    var isInstant = isLayoutInstant !== undefined ? isLayoutInstant :
3144      !this._isLayoutInited;
3145    this._isInstant = isInstant;
3146    return isInstant;
3147  };
3148
3149  // listen for layoutComplete, hideComplete and revealComplete
3150  // to trigger arrangeComplete
3151  proto._bindArrangeComplete = function() {
3152    // listen for 3 events to trigger arrangeComplete
3153    var isLayoutComplete, isHideComplete, isRevealComplete;
3154    var _this = this;
3155    function arrangeParallelCallback() {
3156      if ( isLayoutComplete && isHideComplete && isRevealComplete ) {
3157        _this.dispatchEvent( 'arrangeComplete', null, [ _this.filteredItems ] );
3158      }
3159    }
3160    this.once( 'layoutComplete', function() {
3161      isLayoutComplete = true;
3162      arrangeParallelCallback();
3163    });
3164    this.once( 'hideComplete', function() {
3165      isHideComplete = true;
3166      arrangeParallelCallback();
3167    });
3168    this.once( 'revealComplete', function() {
3169      isRevealComplete = true;
3170      arrangeParallelCallback();
3171    });
3172  };
3173
3174  // -------------------------- filter -------------------------- //
3175
3176  proto._filter = function( items ) {
3177    var filter = this.options.filter;
3178    filter = filter || '*';
3179    var matches = [];
3180    var hiddenMatched = [];
3181    var visibleUnmatched = [];
3182
3183    var test = this._getFilterTest( filter );
3184
3185    // test each item
3186    for ( var i=0; i < items.length; i++ ) {
3187      var item = items[i];
3188      if ( item.isIgnored ) {
3189        continue;
3190      }
3191      // add item to either matched or unmatched group
3192      var isMatched = test( item );
3193      // item.isFilterMatched = isMatched;
3194      // add to matches if its a match
3195      if ( isMatched ) {
3196        matches.push( item );
3197      }
3198      // add to additional group if item needs to be hidden or revealed
3199      if ( isMatched && item.isHidden ) {
3200        hiddenMatched.push( item );
3201      } else if ( !isMatched && !item.isHidden ) {
3202        visibleUnmatched.push( item );
3203      }
3204    }
3205
3206    // return collections of items to be manipulated
3207    return {
3208      matches: matches,
3209      needReveal: hiddenMatched,
3210      needHide: visibleUnmatched
3211    };
3212  };
3213
3214  // get a jQuery, function, or a matchesSelector test given the filter
3215  proto._getFilterTest = function( filter ) {
3216    if ( jQuery && this.options.isJQueryFiltering ) {
3217      // use jQuery
3218      return function( item ) {
3219        return jQuery( item.element ).is( filter );
3220      };
3221    }
3222    if ( typeof filter == 'function' ) {
3223      // use filter as function
3224      return function( item ) {
3225        return filter( item.element );
3226      };
3227    }
3228    // default, use filter as selector string
3229    return function( item ) {
3230      return matchesSelector( item.element, filter );
3231    };
3232  };
3233
3234  // -------------------------- sorting -------------------------- //
3235
3236  /**
3237   * @params {Array} elems
3238   * @public
3239   */
3240  proto.updateSortData = function( elems ) {
3241    // get items
3242    var items;
3243    if ( elems ) {
3244      elems = utils.makeArray( elems );
3245      items = this.getItems( elems );
3246    } else {
3247      // update all items if no elems provided
3248      items = this.items;
3249    }
3250
3251    this._getSorters();
3252    this._updateItemsSortData( items );
3253  };
3254
3255  proto._getSorters = function() {
3256    var getSortData = this.options.getSortData;
3257    for ( var key in getSortData ) {
3258      var sorter = getSortData[ key ];
3259      this._sorters[ key ] = mungeSorter( sorter );
3260    }
3261  };
3262
3263  /**
3264   * @params {Array} items - of Isotope.Items
3265   * @private
3266   */
3267  proto._updateItemsSortData = function( items ) {
3268    // do not update if no items
3269    var len = items && items.length;
3270
3271    for ( var i=0; len && i < len; i++ ) {
3272      var item = items[i];
3273      item.updateSortData();
3274    }
3275  };
3276
3277  // ----- munge sorter ----- //
3278
3279  // encapsulate this, as we just need mungeSorter
3280  // other functions in here are just for munging
3281  var mungeSorter = ( function() {
3282    // add a magic layer to sorters for convienent shorthands
3283    // `.foo-bar` will use the text of .foo-bar querySelector
3284    // `[foo-bar]` will use attribute
3285    // you can also add parser
3286    // `.foo-bar parseInt` will parse that as a number
3287    function mungeSorter( sorter ) {
3288      // if not a string, return function or whatever it is
3289      if ( typeof sorter != 'string' ) {
3290        return sorter;
3291      }
3292      // parse the sorter string
3293      var args = trim( sorter ).split(' ');
3294      var query = args[0];
3295      // check if query looks like [an-attribute]
3296      var attrMatch = query.match( /^\[(.+)\]$/ );
3297      var attr = attrMatch && attrMatch[1];
3298      var getValue = getValueGetter( attr, query );
3299      // use second argument as a parser
3300      var parser = Isotope.sortDataParsers[ args[1] ];
3301      // parse the value, if there was a parser
3302      sorter = parser ? function( elem ) {
3303        return elem && parser( getValue( elem ) );
3304      } :
3305      // otherwise just return value
3306      function( elem ) {
3307        return elem && getValue( elem );
3308      };
3309
3310      return sorter;
3311    }
3312
3313    // get an attribute getter, or get text of the querySelector
3314    function getValueGetter( attr, query ) {
3315      // if query looks like [foo-bar], get attribute
3316      if ( attr ) {
3317        return function getAttribute( elem ) {
3318          return elem.getAttribute( attr );
3319        };
3320      }
3321
3322      // otherwise, assume its a querySelector, and get its text
3323      return function getChildText( elem ) {
3324        var child = elem.querySelector( query );
3325        return child && child.textContent;
3326      };
3327    }
3328
3329    return mungeSorter;
3330  })();
3331
3332  // parsers used in getSortData shortcut strings
3333  Isotope.sortDataParsers = {
3334    'parseInt': function( val ) {
3335      return parseInt( val, 10 );
3336    },
3337    'parseFloat': function( val ) {
3338      return parseFloat( val );
3339    }
3340  };
3341
3342  // ----- sort method ----- //
3343
3344  // sort filteredItem order
3345  proto._sort = function() {
3346    if ( !this.options.sortBy ) {
3347      return;
3348    }
3349    // keep track of sortBy History
3350    var sortBys = utils.makeArray( this.options.sortBy );
3351    if ( !this._getIsSameSortBy( sortBys ) ) {
3352      // concat all sortBy and sortHistory, add to front, oldest goes in last
3353      this.sortHistory = sortBys.concat( this.sortHistory );
3354    }
3355    // sort magic
3356    var itemSorter = getItemSorter( this.sortHistory, this.options.sortAscending );
3357    this.filteredItems.sort( itemSorter );
3358  };
3359
3360  // check if sortBys is same as start of sortHistory
3361  proto._getIsSameSortBy = function( sortBys ) {
3362    for ( var i=0; i < sortBys.length; i++ ) {
3363      if ( sortBys[i] != this.sortHistory[i] ) {
3364        return false;
3365      }
3366    }
3367    return true;
3368  };
3369
3370  // returns a function used for sorting
3371  function getItemSorter( sortBys, sortAsc ) {
3372    return function sorter( itemA, itemB ) {
3373      // cycle through all sortKeys
3374      for ( var i = 0; i < sortBys.length; i++ ) {
3375        var sortBy = sortBys[i];
3376        var a = itemA.sortData[ sortBy ];
3377        var b = itemB.sortData[ sortBy ];
3378        if ( a > b || a < b ) {
3379          // if sortAsc is an object, use the value given the sortBy key
3380          var isAscending = sortAsc[ sortBy ] !== undefined ? sortAsc[ sortBy ] : sortAsc;
3381          var direction = isAscending ? 1 : -1;
3382          return ( a > b ? 1 : -1 ) * direction;
3383        }
3384      }
3385      return 0;
3386    };
3387  }
3388
3389  // -------------------------- methods -------------------------- //
3390
3391  // get layout mode
3392  proto._mode = function() {
3393    var layoutMode = this.options.layoutMode;
3394    var mode = this.modes[ layoutMode ];
3395    if ( !mode ) {
3396      // TODO console.error
3397      throw new Error( 'No layout mode: ' + layoutMode );
3398    }
3399    // HACK sync mode's options
3400    // any options set after init for layout mode need to be synced
3401    mode.options = this.options[ layoutMode ];
3402    return mode;
3403  };
3404
3405  proto._resetLayout = function() {
3406    // trigger original reset layout
3407    Outlayer.prototype._resetLayout.call( this );
3408    this._mode()._resetLayout();
3409  };
3410
3411  proto._getItemLayoutPosition = function( item  ) {
3412    return this._mode()._getItemLayoutPosition( item );
3413  };
3414
3415  proto._manageStamp = function( stamp ) {
3416    this._mode()._manageStamp( stamp );
3417  };
3418
3419  proto._getContainerSize = function() {
3420    return this._mode()._getContainerSize();
3421  };
3422
3423  proto.needsResizeLayout = function() {
3424    return this._mode().needsResizeLayout();
3425  };
3426
3427  // -------------------------- adding & removing -------------------------- //
3428
3429  // HEADS UP overwrites default Outlayer appended
3430  proto.appended = function( elems ) {
3431    var items = this.addItems( elems );
3432    if ( !items.length ) {
3433      return;
3434    }
3435    // filter, layout, reveal new items
3436    var filteredItems = this._filterRevealAdded( items );
3437    // add to filteredItems
3438    this.filteredItems = this.filteredItems.concat( filteredItems );
3439  };
3440
3441  // HEADS UP overwrites default Outlayer prepended
3442  proto.prepended = function( elems ) {
3443    var items = this._itemize( elems );
3444    if ( !items.length ) {
3445      return;
3446    }
3447    // start new layout
3448    this._resetLayout();
3449    this._manageStamps();
3450    // filter, layout, reveal new items
3451    var filteredItems = this._filterRevealAdded( items );
3452    // layout previous items
3453    this.layoutItems( this.filteredItems );
3454    // add to items and filteredItems
3455    this.filteredItems = filteredItems.concat( this.filteredItems );
3456    this.items = items.concat( this.items );
3457  };
3458
3459  proto._filterRevealAdded = function( items ) {
3460    var filtered = this._filter( items );
3461    this.hide( filtered.needHide );
3462    // reveal all new items
3463    this.reveal( filtered.matches );
3464    // layout new items, no transition
3465    this.layoutItems( filtered.matches, true );
3466    return filtered.matches;
3467  };
3468
3469  /**
3470   * Filter, sort, and layout newly-appended item elements
3471   * @param {Array or NodeList or Element} elems
3472   */
3473  proto.insert = function( elems ) {
3474    var items = this.addItems( elems );
3475    if ( !items.length ) {
3476      return;
3477    }
3478    // append item elements
3479    var i, item;
3480    var len = items.length;
3481    for ( i=0; i < len; i++ ) {
3482      item = items[i];
3483      this.element.appendChild( item.element );
3484    }
3485    // filter new stuff
3486    var filteredInsertItems = this._filter( items ).matches;
3487    // set flag
3488    for ( i=0; i < len; i++ ) {
3489      items[i].isLayoutInstant = true;
3490    }
3491    this.arrange();
3492    // reset flag
3493    for ( i=0; i < len; i++ ) {
3494      delete items[i].isLayoutInstant;
3495    }
3496    this.reveal( filteredInsertItems );
3497  };
3498
3499  var _remove = proto.remove;
3500  proto.remove = function( elems ) {
3501    elems = utils.makeArray( elems );
3502    var removeItems = this.getItems( elems );
3503    // do regular thing
3504    _remove.call( this, elems );
3505    // bail if no items to remove
3506    var len = removeItems && removeItems.length;
3507    // remove elems from filteredItems
3508    for ( var i=0; len && i < len; i++ ) {
3509      var item = removeItems[i];
3510      // remove item from collection
3511      utils.removeFrom( this.filteredItems, item );
3512    }
3513  };
3514
3515  proto.shuffle = function() {
3516    // update random sortData
3517    for ( var i=0; i < this.items.length; i++ ) {
3518      var item = this.items[i];
3519      item.sortData.random = Math.random();
3520    }
3521    this.options.sortBy = 'random';
3522    this._sort();
3523    this._layout();
3524  };
3525
3526  /**
3527   * trigger fn without transition
3528   * kind of hacky to have this in the first place
3529   * @param {Function} fn
3530   * @param {Array} args
3531   * @returns ret
3532   * @private
3533   */
3534  proto._noTransition = function( fn, args ) {
3535    // save transitionDuration before disabling
3536    var transitionDuration = this.options.transitionDuration;
3537    // disable transition
3538    this.options.transitionDuration = 0;
3539    // do it
3540    var returnValue = fn.apply( this, args );
3541    // re-enable transition for reveal
3542    this.options.transitionDuration = transitionDuration;
3543    return returnValue;
3544  };
3545
3546  // ----- helper methods ----- //
3547
3548  /**
3549   * getter method for getting filtered item elements
3550   * @returns {Array} elems - collection of item elements
3551   */
3552  proto.getFilteredItemElements = function() {
3553    return this.filteredItems.map( function( item ) {
3554      return item.element;
3555    });
3556  };
3557
3558  // -----  ----- //
3559
3560  return Isotope;
3561
3562}));