https://www.tuttobicitech.it/bundles/tuttobici/js/foundation/5.5.3/foundation/foundation.equalizer.js

1;(function ($, window, document, undefined) {
2  'use strict';
3
4  Foundation.libs.equalizer = {
5    name : 'equalizer',
6
7    version : '5.5.3',
8
9    settings : {
10      use_tallest : true,
11      before_height_change : $.noop,
12      after_height_change : $.noop,
13      equalize_on_stack : false,
14      act_on_hidden_el: false
15    },
16
17    init : function (scope, method, options) {
18      Foundation.inherit(this, 'image_loaded');
19      this.bindings(method, options);
20      this.reflow();
21    },
22
23    events : function () {
24      this.S(window).off('.equalizer').on('resize.fndtn.equalizer', function (e) {
25        this.reflow();
26      }.bind(this));
27    },
28
29    equalize : function (equalizer) {
30      var isStacked = false,
31          group = equalizer.data('equalizer'),
32          settings = equalizer.data(this.attr_name(true)+'-init') || this.settings,
33          vals,
34          firstTopOffset;
35
36      if (settings.act_on_hidden_el) {
37        vals = group ? equalizer.find('['+this.attr_name()+'-watch="'+group+'"]') : equalizer.find('['+this.attr_name()+'-watch]');
38      }
39      else {
40        vals = group ? equalizer.find('['+this.attr_name()+'-watch="'+group+'"]:visible') : equalizer.find('['+this.attr_name()+'-watch]:visible');
41      }
42      
43      if (vals.length === 0) {
44        return;
45      }
46
47      settings.before_height_change();
48      equalizer.trigger('before-height-change.fndth.equalizer');
49      vals.height('inherit');
50
51      if (settings.equalize_on_stack === false) {
52        firstTopOffset = vals.first().offset().top;
53        vals.each(function () {
54          if ($(this).offset().top !== firstTopOffset) {
55            isStacked = true;
56            return false;
57          }
58        });
59        if (isStacked) {
60          return;
61        }
62      }
63
64      var heights = vals.map(function () { return $(this).outerHeight(false) }).get();
65
66      if (settings.use_tallest) {
67        var max = Math.max.apply(null, heights);
68        vals.css('height', max);
69      } else {
70        var min = Math.min.apply(null, heights);
71        vals.css('height', min);
72      }
73
74      settings.after_height_change();
75      equalizer.trigger('after-height-change.fndtn.equalizer');
76    },
77
78    reflow : function () {
79      var self = this;
80
81      this.S('[' + this.attr_name() + ']', this.scope).each(function () {
82        var $eq_target = $(this),
83            media_query = $eq_target.data('equalizer-mq'),
84            ignore_media_query = true;
85
86        if (media_query) {
87          media_query = 'is_' + media_query.replace(/-/g, '_');
88          if (Foundation.utils.hasOwnProperty(media_query)) {
89            ignore_media_query = false;
90          }
91        }
92
93        self.image_loaded(self.S('img', this), function () {
94          if (ignore_media_query || Foundation.utils[media_query]()) {
95            self.equalize($eq_target)
96          } else {
97            var vals = $eq_target.find('[' + self.attr_name() + '-watch]:visible');
98            vals.css('height', 'auto');
99          }
100        });
101      });
102    }
103  };
104})(jQuery, window, window.document);