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/*jslint unparam: true, browser: true, indent: 2 */

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

  Foundation.libs.topbar = {
    name : 'topbar',

    version : '4.1.2',

    settings : {
      index : 0,
      stickyClass : 'sticky',
      custom_back_text: true,
      back_text: 'Back',
      init : false
    },

    init : function (section, method, options) {
      var self = this;

      if (typeof method === 'object') {
        $.extend(true, this.settings, method);
      }

      if (typeof method != 'string') {

        $('.top-bar').each(function () {
          self.settings.$w = $(window);
          self.settings.$topbar = $(this);
          self.settings.$section = self.settings.$topbar.find('section');
          self.settings.$titlebar = self.settings.$topbar.children('ul').first();


          self.settings.$topbar.data('index', 0);

          var breakpoint = $("").insertAfter(self.settings.$topbar);
          self.settings.breakPoint = breakpoint.width();
          breakpoint.remove();

          self.assemble();

          if (self.settings.$topbar.parent().hasClass('fixed')) {
            $('body').css('padding-top', self.outerHeight(self.settings.$topbar));
          }
        });

        if (!self.settings.init) {
          this.events();
        }

        return this.settings.init;
      } else {
        // fire method
        return this[method].call(this, options);
      }
    },

    events : function () {
      var self = this;
      var offst = this.outerHeight($('.top-bar'));
      $(this.scope)
        .on('click.fndtn.topbar', '.top-bar .toggle-topbar', function (e) {
          var topbar = $(this).closest('.top-bar'),
              section = topbar.find('section, .section'),
              titlebar = topbar.children('ul').first();

          if (!topbar.data('height')) self.largestUL();

          e.preventDefault();

          if (self.breakpoint()) {
            topbar
              .toggleClass('expanded')
              .css('min-height', '');
          }

          if (!topbar.hasClass('expanded')) {
            if (!self.rtl) {
              section.css({left: '0%'});
              section.find('>.name').css({left: '100%'});
            } else {
              section.css({right: '0%'});
              section.find('>.name').css({right: '100%'});
            }
            section.find('li.moved').removeClass('moved');
            topbar.data('index', 0);

            if (topbar.hasClass('fixed')) {
              topbar.parent().addClass('fixed');
              topbar.removeClass('fixed');
              $('body').css('padding-top',offst);
            }
          } else if (topbar.parent().hasClass('fixed')) {
            topbar.parent().removeClass('fixed');
            topbar.addClass('fixed');
            $('body').css('padding-top','0');
            window.scrollTo(0,0);
          }
        })

        .on('click.fndtn.topbar', '.top-bar .has-dropdown>a', function (e) {
          var topbar = $(this).closest('.top-bar'),
              section = topbar.find('section, .section'),
              titlebar = topbar.children('ul').first();

          if (Modernizr.touch || self.breakpoint()) {
            e.preventDefault();
          }

          if (self.breakpoint()) {
            var $this = $(this),
                $selectedLi = $this.closest('li');

            topbar.data('index', topbar.data('index') + 1);
            $selectedLi.addClass('moved');
            if (!self.rtl) {
              section.css({left: -(100 * topbar.data('index')) + '%'});
              section.find('>.name').css({left: 100 * topbar.data('index') + '%'});
            } else {
              section.css({right: -(100 * topbar.data('index')) + '%'});
              section.find('>.name').css({right: 100 * topbar.data('index') + '%'});
            }

            $this.siblings('ul')
              .height(topbar.data('height') + self.outerHeight(titlebar, true));
            topbar
              .css('min-height', topbar.data('height') + self.outerHeight(titlebar, true) * 2)
          }
        });

      $(window).on('resize.fndtn.topbar', function () {
        if (!self.breakpoint()) {
          $('.top-bar')
            .css('min-height', '')
            .removeClass('expanded');
        }
      }.bind(this));

      // Go up a level on Click
      $(this.scope).on('click.fndtn', '.top-bar .has-dropdown .back', function (e) {
        e.preventDefault();

        var $this = $(this),
            topbar = $this.closest('.top-bar'),
            section = topbar.find('section, .section'),
            $movedLi = $this.closest('li.moved'),
            $previousLevelUl = $movedLi.parent();

        topbar.data('index', topbar.data('index') - 1);
        if (!self.rtl) {
          section.css({left: -(100 * topbar.data('index')) + '%'});
          section.find('>.name').css({left: 100 * topbar.data('index') + '%'});
        } else {
          section.css({right: -(100 * topbar.data('index')) + '%'});
          section.find('>.name').css({right: 100 * topbar.data('index') + '%'});
        }

        if (topbar.data('index') === 0) {
          topbar.css('min-height', 0);
        }

        setTimeout(function () {
          $movedLi.removeClass('moved');
        }, 300);
      });
    },

    breakpoint : function () {
      return $(window).width() <= this.settings.breakPoint || $('html').hasClass('lt-ie9');
    },

    assemble : function () {
      var self = this;
      // Pull element out of the DOM for manipulation
      this.settings.$section.detach();

      this.settings.$section.find('.has-dropdown>a').each(function () {
        var $link = $(this),
            $dropdown = $link.siblings('.dropdown'),
            $titleLi = $('');

        // Copy link to subnav
        if (self.settings.custom_back_text == true) {
          $titleLi.find('h5>a').html('« ' + self.settings.back_text);
        } else {
          $titleLi.find('h5>a').html('« ' + $link.html());
        }
        $dropdown.prepend($titleLi);
      });

      // Put element back in the DOM
      this.settings.$section.appendTo(this.settings.$topbar);

      // check for sticky
      this.sticky();
    },

    largestUL : function () {
      var uls = this.settings.$topbar.find('section ul ul'),
          largest = uls.first(),
          total = 0,
          self = this;

      uls.each(function () {
        if ($(this).children('li').length > largest.children('li').length) {
          largest = $(this);
        }
      });

      largest.children('li').each(function () { total += self.outerHeight($(this), true); });

      this.settings.$topbar.data('height', total);
    },

    sticky : function () {
      var klass = '.' + this.settings.stickyClass;
      if ($(klass).length > 0) {
        var distance = $(klass).length ? $(klass).offset().top: 0,
            $window = $(window);
            var offst = this.outerHeight($('.top-bar'));

          $window.scroll(function() {
            if ($window.scrollTop() >= (distance)) {
              $(klass).addClass("fixed");
              $('body').css('padding-top',offst);
            }

            else if ($window.scrollTop() < distance) {
              $(klass).removeClass("fixed");
              $('body').css('padding-top','0');
            }
        });
      }
    },

    off : function () {
      $(this.scope).off('.fndtn.topbar');
      $(window).off('.fndtn.topbar');
    }
  };
}(Foundation.zj, this, this.document));