foreground/assets/scripts/foundation/foundation.js

/*
 * Foundation Responsive Library
 * http://foundation.zurb.com
 * Copyright 2015, ZURB
 * Free to use under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
*/

(function ($, window, document, undefined) {
  'use strict';

  var header_helpers = function (class_array) {
    var head = $('head');
    head.prepend($.map(class_array, function (class_name) {
      if (head.has('.' + class_name).length === 0) {
        return '<meta class="' + class_name + '" />';
      }
    }));
  };

  header_helpers([
    'foundation-mq-small',
    'foundation-mq-small-only',
    'foundation-mq-medium',
    'foundation-mq-medium-only',
    'foundation-mq-large',
    'foundation-mq-large-only',
    'foundation-mq-xlarge',
    'foundation-mq-xlarge-only',
    'foundation-mq-xxlarge',
    'foundation-data-attribute-namespace']);

  // Enable FastClick if present

  $(function () {
    if (typeof FastClick !== 'undefined') {
      // Don't attach to body if undefined
      if (typeof document.body !== 'undefined') {
        FastClick.attach(document.body);
      }
    }
  });

  // private Fast Selector wrapper,
  // returns jQuery object. Only use where
  // getElementById is not available.
  var S = function (selector, context) {
    if (typeof selector === 'string') {
      if (context) {
        var cont;
        if (context.jquery) {
          cont = context[0];
          if (!cont) {
            return context;
          }
        } else {
          cont = context;
        }
        return $(cont.querySelectorAll(selector));
      }

      return $(document.querySelectorAll(selector));
    }

    return $(selector, context);
  };

  // Namespace functions.

  var attr_name = function (init) {
    var arr = [];
    if (!init) {
      arr.push('data');
    }
    if (this.namespace.length > 0) {
      arr.push(this.namespace);
    }
    arr.push(this.name);

    return arr.join('-');
  };

  var add_namespace = function (str) {
    var parts = str.split('-'),
        i = parts.length,
        arr = [];

    while (i--) {
      if (i !== 0) {
        arr.push(parts[i]);
      } else {
        if (this.namespace.length > 0) {
          arr.push(this.namespace, parts[i]);
        } else {
          arr.push(parts[i]);
        }
      }
    }

    return arr.reverse().join('-');
  };

  // Event binding and data-options updating.

  var bindings = function (method, options) {
    var self = this,
        bind = function(){
          var $this = S(this),
              should_bind_events = !$this.data(self.attr_name(true) + '-init');
          $this.data(self.attr_name(true) + '-init', $.extend({}, self.settings, (options || method), self.data_options($this)));

          if (should_bind_events) {
            self.events(this);
          }
        };

    if (S(this.scope).is('[' + this.attr_name() +']')) {
      bind.call(this.scope);
    } else {
      S('[' + this.attr_name() +']', this.scope).each(bind);
    }
    // # Patch to fix #5043 to move this *after* the if/else clause in order for Backbone and similar frameworks to have improved control over event binding and data-options updating.
    if (typeof method === 'string') {
      return this[method].call(this, options);
    }

  };

  var single_image_loaded = function (image, callback) {
    function loaded () {
      callback(image[0]);
    }

    function bindLoad () {
      this.one('load', loaded);

      if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)) {
        var src = this.attr( 'src' ),
            param = src.match( /\?/ ) ? '&' : '?';

        param += 'random=' + (new Date()).getTime();
        this.attr('src', src + param);
      }
    }

    if (!image.attr('src')) {
      loaded();
      return;
    }

    if (image[0].complete || image[0].readyState === 4) {
      loaded();
    } else {
      bindLoad.call(image);
    }
  };

  /*! matchMedia() polyfill - Test a CSS media type/query in JS. Authors & copyright (c) 2012: Scott Jehl, Paul Irish, Nicholas Zakas, David Knight. Dual MIT/BSD license */

  window.matchMedia || (window.matchMedia = function() {
      "use strict";

      // For browsers that support matchMedium api such as IE 9 and webkit
      var styleMedia = (window.styleMedia || window.media);

      // For those that don't support matchMedium
      if (!styleMedia) {
          var style       = document.createElement('style'),
              script      = document.getElementsByTagName('script')[0],
              info        = null;

          style.type  = 'text/css';
          style.id    = 'matchmediajs-test';

          script.parentNode.insertBefore(style, script);

          // 'style.currentStyle' is used by IE <= 8 and 'window.getComputedStyle' for all other browsers
          info = ('getComputedStyle' in window) && window.getComputedStyle(style, null) || style.currentStyle;

          styleMedia = {
              matchMedium: function(media) {
                  var text = '@media ' + media + '{ #matchmediajs-test { width: 1px; } }';

                  // 'style.styleSheet' is used by IE <= 8 and 'style.textContent' for all other browsers
                  if (style.styleSheet) {
                      style.styleSheet.cssText = text;
                  } else {
                      style.textContent = text;
                  }

                  // Test if media query is true or false
                  return info.width === '1px';
              }
          };
      }

      return function(media) {
          return {
              matches: styleMedia.matchMedium(media || 'all'),
              media: media || 'all'
          };
      };
  }());

  /*
   * jquery.requestAnimationFrame
   * https://github.com/gnarf37/jquery-requestAnimationFrame
   * Requires jQuery 1.8+
   *
   * Copyright (c) 2012 Corey Frang
   * Licensed under the MIT license.
   */

  (function(jQuery) {


  // requestAnimationFrame polyfill adapted from Erik Möller
  // fixes from Paul Irish and Tino Zijdel
  // http://paulirish.com/2011/requestanimationframe-for-smart-animating/
  // http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating

  var animating,
      lastTime = 0,
      vendors = ['webkit', 'moz'],
      requestAnimationFrame = window.requestAnimationFrame,
      cancelAnimationFrame = window.cancelAnimationFrame,
      jqueryFxAvailable = 'undefined' !== typeof jQuery.fx;

  for (; lastTime < vendors.length && !requestAnimationFrame; lastTime++) {
    requestAnimationFrame = window[ vendors[lastTime] + 'RequestAnimationFrame' ];
    cancelAnimationFrame = cancelAnimationFrame ||
      window[ vendors[lastTime] + 'CancelAnimationFrame' ] ||
      window[ vendors[lastTime] + 'CancelRequestAnimationFrame' ];
  }

  function raf() {
    if (animating) {
      requestAnimationFrame(raf);

      if (jqueryFxAvailable) {
        jQuery.fx.tick();
      }
    }
  }

  if (requestAnimationFrame) {
    // use rAF
    window.requestAnimationFrame = requestAnimationFrame;
    window.cancelAnimationFrame = cancelAnimationFrame;

    if (jqueryFxAvailable) {
      jQuery.fx.timer = function (timer) {
        if (timer() && jQuery.timers.push(timer) && !animating) {
          animating = true;
          raf();
        }
      };

      jQuery.fx.stop = function () {
        animating = false;
      };
    }
  } else {
    // polyfill
    window.requestAnimationFrame = function (callback) {
      var currTime = new Date().getTime(),
        timeToCall = Math.max(0, 16 - (currTime - lastTime)),
        id = window.setTimeout(function () {
          callback(currTime + timeToCall);
        }, timeToCall);
      lastTime = currTime + timeToCall;
      return id;
    };

    window.cancelAnimationFrame = function (id) {
      clearTimeout(id);
    };

  }

  }( $ ));

  function removeQuotes (string) {
    if (typeof string === 'string' || string instanceof String) {
      string = string.replace(/^['\\/"]+|(;\s?})+|['\\/"]+$/g, '');
    }

    return string;
  }

  function MediaQuery(selector) {
    this.selector = selector;
    this.query = '';
  }

  MediaQuery.prototype.toString = function () {
    return this.query || (this.query = S(this.selector).css('font-family').replace(/^[\/\\'"]+|(;\s?})+|[\/\\'"]+$/g, ''));
  };

  window.Foundation = {
    name : 'Foundation',

    version : '5.5.3',

    media_queries : {
      'small'       : new MediaQuery('.foundation-mq-small'),
      'small-only'  : new MediaQuery('.foundation-mq-small-only'),
      'medium'      : new MediaQuery('.foundation-mq-medium'),
      'medium-only' : new MediaQuery('.foundation-mq-medium-only'),
      'large'       : new MediaQuery('.foundation-mq-large'),
      'large-only'  : new MediaQuery('.foundation-mq-large-only'),
      'xlarge'      : new MediaQuery('.foundation-mq-xlarge'),
      'xlarge-only' : new MediaQuery('.foundation-mq-xlarge-only'),
      'xxlarge'     : new MediaQuery('.foundation-mq-xxlarge')
    },

    stylesheet : $('<style></style>').appendTo('head')[0].sheet,

    global : {
      namespace : undefined
    },

    init : function (scope, libraries, method, options, response) {
      var args = [scope, method, options, response],
          responses = [];

      // check RTL
      this.rtl = /rtl/i.test(S('html').attr('dir'));

      // set foundation global scope
      this.scope = scope || this.scope;

      this.set_namespace();

      if (libraries && typeof libraries === 'string' && !/reflow/i.test(libraries)) {
        if (this.libs.hasOwnProperty(libraries)) {
          responses.push(this.init_lib(libraries, args));
        }
      } else {
        for (var lib in this.libs) {
          responses.push(this.init_lib(lib, libraries));
        }
      }

      S(window).load(function () {
        S(window)
          .trigger('resize.fndtn.clearing')
          .trigger('resize.fndtn.dropdown')
          .trigger('resize.fndtn.equalizer')
          .trigger('resize.fndtn.interchange')
          .trigger('resize.fndtn.joyride')
          .trigger('resize.fndtn.magellan')
          .trigger('resize.fndtn.topbar')
          .trigger('resize.fndtn.slider');
      });

      return scope;
    },

    init_lib : function (lib, args) {
      if (this.libs.hasOwnProperty(lib)) {
        this.patch(this.libs[lib]);

        if (args && args.hasOwnProperty(lib)) {
            if (typeof this.libs[lib].settings !== 'undefined') {
              $.extend(true, this.libs[lib].settings, args[lib]);
            } else if (typeof this.libs[lib].defaults !== 'undefined') {
              $.extend(true, this.libs[lib].defaults, args[lib]);
            }
          return this.libs[lib].init.apply(this.libs[lib], [this.scope, args[lib]]);
        }

        args = args instanceof Array ? args : new Array(args);
        return this.libs[lib].init.apply(this.libs[lib], args);
      }

      return function () {};
    },

    patch : function (lib) {
      lib.scope = this.scope;
      lib.namespace = this.global.namespace;
      lib.rtl = this.rtl;
      lib['data_options'] = this.utils.data_options;
      lib['attr_name'] = attr_name;
      lib['add_namespace'] = add_namespace;
      lib['bindings'] = bindings;
      lib['S'] = this.utils.S;
    },

    inherit : function (scope, methods) {
      var methods_arr = methods.split(' '),
          i = methods_arr.length;

      while (i--) {
        if (this.utils.hasOwnProperty(methods_arr[i])) {
          scope[methods_arr[i]] = this.utils[methods_arr[i]];
        }
      }
    },

    set_namespace : function () {

      // Description:
      //    Don't bother reading the namespace out of the meta tag
      //    if the namespace has been set globally in javascript
      //
      // Example:
      //    Foundation.global.namespace = 'my-namespace';
      // or make it an empty string:
      //    Foundation.global.namespace = '';
      //
      //

      // If the namespace has not been set (is undefined), try to read it out of the meta element.
      // Otherwise use the globally defined namespace, even if it's empty ('')
      var namespace = ( this.global.namespace === undefined ) ? $('.foundation-data-attribute-namespace').css('font-family') : this.global.namespace;

      // Finally, if the namsepace is either undefined or false, set it to an empty string.
      // Otherwise use the namespace value.
      this.global.namespace = ( namespace === undefined || /false/i.test(namespace) ) ? '' : namespace;
    },

    libs : {},

    // methods that can be inherited in libraries
    utils : {

      // Description:
      //    Fast Selector wrapper returns jQuery object. Only use where getElementById
      //    is not available.
      //
      // Arguments:
      //    Selector (String): CSS selector describing the element(s) to be
      //    returned as a jQuery object.
      //
      //    Scope (String): CSS selector describing the area to be searched. Default
      //    is document.
      //
      // Returns:
      //    Element (jQuery Object): jQuery object containing elements matching the
      //    selector within the scope.
      S : S,

      // Description:
      //    Executes a function a max of once every n milliseconds
      //
      // Arguments:
      //    Func (Function): Function to be throttled.
      //
      //    Delay (Integer): Function execution threshold in milliseconds.
      //
      // Returns:
      //    Lazy_function (Function): Function with throttling applied.
      throttle : function (func, delay) {
        var timer = null;

        return function () {
          var context = this, args = arguments;

          if (timer == null) {
            timer = setTimeout(function () {
              func.apply(context, args);
              timer = null;
            }, delay);
          }
        };
      },

      // Description:
      //    Executes a function when it stops being invoked for n seconds
      //    Modified version of _.debounce() http://underscorejs.org
      //
      // Arguments:
      //    Func (Function): Function to be debounced.
      //
      //    Delay (Integer): Function execution threshold in milliseconds.
      //
      //    Immediate (Bool): Whether the function should be called at the beginning
      //    of the delay instead of the end. Default is false.
      //
      // Returns:
      //    Lazy_function (Function): Function with debouncing applied.
      debounce : function (func, delay, immediate) {
        var timeout, result;
        return function () {
          var context = this, args = arguments;
          var later = function () {
            timeout = null;
            if (!immediate) {
              result = func.apply(context, args);
            }
          };
          var callNow = immediate && !timeout;
          clearTimeout(timeout);
          timeout = setTimeout(later, delay);
          if (callNow) {
            result = func.apply(context, args);
          }
          return result;
        };
      },

      // Description:
      //    Parses data-options attribute
      //
      // Arguments:
      //    El (jQuery Object): Element to be parsed.
      //
      // Returns:
      //    Options (Javascript Object): Contents of the element's data-options
      //    attribute.
      data_options : function (el, data_attr_name) {
        data_attr_name = data_attr_name || 'options';
        var opts = {}, ii, p, opts_arr,
            data_options = function (el) {
              var namespace = Foundation.global.namespace;

              if (namespace.length > 0) {
                return el.data(namespace + '-' + data_attr_name);
              }

              return el.data(data_attr_name);
            };

        var cached_options = data_options(el);

        if (typeof cached_options === 'object') {
          return cached_options;
        }

        opts_arr = (cached_options || ':').split(';');
        ii = opts_arr.length;

        function isNumber (o) {
          return !isNaN (o - 0) && o !== null && o !== '' && o !== false && o !== true;
        }

        function trim (str) {
          if (typeof str === 'string') {
            return $.trim(str);
          }
          return str;
        }

        while (ii--) {
          p = opts_arr[ii].split(':');
          p = [p[0], p.slice(1).join(':')];

          if (/true/i.test(p[1])) {
            p[1] = true;
          }
          if (/false/i.test(p[1])) {
            p[1] = false;
          }
          if (isNumber(p[1])) {
            if (p[1].indexOf('.') === -1) {
              p[1] = parseInt(p[1], 10);
            } else {
              p[1] = parseFloat(p[1]);
            }
          }

          if (p.length === 2 && p[0].length > 0) {
            opts[trim(p[0])] = trim(p[1]);
          }
        }

        return opts;
      },

      // Description:
      //    Adds JS-recognizable media queries
      //
      // Arguments:
      //    Media (String): Key string for the media query to be stored as in
      //    Foundation.media_queries
      //
      //    Class (String): Class name for the generated <meta> tag
      register_media : function (media, media_class) {
        if (Foundation.media_queries[media] === undefined) {
          $('head').append('<meta class="' + media_class + '"/>');
          Foundation.media_queries[media] = removeQuotes($('.' + media_class).css('font-family'));
        }
      },

      // Description:
      //    Add custom CSS within a JS-defined media query
      //
      // Arguments:
      //    Rule (String): CSS rule to be appended to the document.
      //
      //    Media (String): Optional media query string for the CSS rule to be
      //    nested under.
      add_custom_rule : function (rule, media) {
        if (media === undefined && Foundation.stylesheet) {
          Foundation.stylesheet.insertRule(rule, Foundation.stylesheet.cssRules.length);
        } else {
          var query = Foundation.media_queries[media];

          if (query !== undefined) {
            Foundation.stylesheet.insertRule('@media ' +
              Foundation.media_queries[media] + '{ ' + rule + ' }', Foundation.stylesheet.cssRules.length);
          }
        }
      },

      // Description:
      //    Performs a callback function when an image is fully loaded
      //
      // Arguments:
      //    Image (jQuery Object): Image(s) to check if loaded.
      //
      //    Callback (Function): Function to execute when image is fully loaded.
      image_loaded : function (images, callback) {
        var self = this,
            unloaded = images.length;

        function pictures_has_height(images) {
          var pictures_number = images.length;

          for (var i = pictures_number - 1; i >= 0; i--) {
            if(images.attr('height') === undefined) {
              return false;
            };
          };

          return true;
        }

        if (unloaded === 0 || pictures_has_height(images)) {
          callback(images);
        }

        images.each(function () {
          single_image_loaded(self.S(this), function () {
            unloaded -= 1;
            if (unloaded === 0) {
              callback(images);
            }
          });
        });
      },

      // Description:
      //    Returns a random, alphanumeric string
      //
      // Arguments:
      //    Length (Integer): Length of string to be generated. Defaults to random
      //    integer.
      //
      // Returns:
      //    Rand (String): Pseudo-random, alphanumeric string.
      random_str : function () {
        if (!this.fidx) {
          this.fidx = 0;
        }
        this.prefix = this.prefix || [(this.name || 'F'), (+new Date).toString(36)].join('-');

        return this.prefix + (this.fidx++).toString(36);
      },

      // Description:
      //    Helper for window.matchMedia
      //
      // Arguments:
      //    mq (String): Media query
      //
      // Returns:
      //    (Boolean): Whether the media query passes or not
      match : function (mq) {
        return window.matchMedia(mq).matches;
      },

      // Description:
      //    Helpers for checking Foundation default media queries with JS
      //
      // Returns:
      //    (Boolean): Whether the media query passes or not

      is_small_up : function () {
        return this.match(Foundation.media_queries.small);
      },

      is_medium_up : function () {
        return this.match(Foundation.media_queries.medium);
      },

      is_large_up : function () {
        return this.match(Foundation.media_queries.large);
      },

      is_xlarge_up : function () {
        return this.match(Foundation.media_queries.xlarge);
      },

      is_xxlarge_up : function () {
        return this.match(Foundation.media_queries.xxlarge);
      },

      is_small_only : function () {
        return !this.is_medium_up() && !this.is_large_up() && !this.is_xlarge_up() && !this.is_xxlarge_up();
      },

      is_medium_only : function () {
        return this.is_medium_up() && !this.is_large_up() && !this.is_xlarge_up() && !this.is_xxlarge_up();
      },

      is_large_only : function () {
        return this.is_medium_up() && this.is_large_up() && !this.is_xlarge_up() && !this.is_xxlarge_up();
      },

      is_xlarge_only : function () {
        return this.is_medium_up() && this.is_large_up() && this.is_xlarge_up() && !this.is_xxlarge_up();
      },

      is_xxlarge_only : function () {
        return this.is_medium_up() && this.is_large_up() && this.is_xlarge_up() && this.is_xxlarge_up();
      }
    }
  };

  $.fn.foundation = function () {
    var args = Array.prototype.slice.call(arguments, 0);

    return this.each(function () {
      Foundation.init.apply(Foundation, [this].concat(args));
      return this;
    });
  };

}(jQuery, window, window.document));