Tabs Mouseover

// -------------------------------------------------------------------------------------------
// Tab Shortcode
// -------------------------------------------------------------------------------------------

(function ($) {
    "use strict";

    $.fn.avia_sc_tabs = function (options) {
        var defaults =
        {
            heading: '.tab',
            content: '.tab_content',
            active: 'active_tab',
            sidebar: false
        };

        var win = $(window),
            options = $.extend(defaults, options);

        return this.each(function () {
            var container = $(this),
                tab_titles = $('<div class="tab_titles"></div>').prependTo(container),
                tabs = $(options.heading, container),
                content = $(options.content, container),
                newtabs = false,
                oldtabs = false;

            newtabs = tabs.clone();
            oldtabs = tabs.addClass('fullsize-tab').attr('aria-hidden', true);
            tabs = newtabs;

            tabs.prependTo(tab_titles).each(function (i) {
                var tab = $(this),
                    the_oldtab = false;

                if (newtabs) {
                    the_oldtab = oldtabs.eq(i);
                }

                tab.addClass('tab_counter_' + i).on('mouseover', function () {
                    open_content(tab, i, the_oldtab);
                    return false;
                });

                tab.on('keydown', function (objEvent) {
                    if (objEvent.keyCode === 13)  // if user presses 'enter'
                    {
                        tab.trigger('mouseover');
                    }
                });

                if (newtabs) {
                    the_oldtab.on('mouseover', function () {
                        open_content(the_oldtab, i, tab);
                        return false;
                    });

                    the_oldtab.on('keydown', function (objEvent) {
                        if (objEvent.keyCode === 13)  // if user presses 'enter'
                        {
                            the_oldtab.trigger('mouseover');
                        }
                    });
                }
            });

            set_size();
            trigger_default_open(false);
            win.on("debouncedresize", set_size);

            $('a').on('mouseover', function () {
                var hash = $(this).attr('href');
                if (typeof hash != "undefined" && hash) {
                    hash = hash.replace(/^.*?#/, '');
                    trigger_default_open('#' + hash);
                }
            });

            function set_size() {
                if (!options.sidebar) {
                    return;
                }

                content.css({ 'min-height': tab_titles.outerHeight() + 1 });
            }

            function open_content(tab, i, alternate_tab) {
                if (!tab.is('.' + options.active)) {
                    $('.' + options.active, container).removeClass(options.active);
                    $('.' + options.active + '_content', container).attr('aria-hidden', true).removeClass(options.active + '_content');

                    tab.addClass(options.active);

                    var new_loc = tab.data('fake-id');
                    if (typeof new_loc == 'string') {
                        window.location.replace(new_loc);
                    }

                    if (alternate_tab) {
                        alternate_tab.addClass(options.active);
                    }

                    var active_c = content.eq(i).addClass(options.active + '_content').attr('aria-hidden', false);

                    if (typeof click_container != 'undefined' && click_container.length) {
                        sidebar_shadow.height(active_c.outerHeight());
                    }

                    //check if tab title is in viewport. if not scroll up
                    var el_offset = active_c.offset().top,
                        scoll_target = el_offset - 50 - parseInt($('html').css('margin-top'), 10);

                    if (win.scrollTop() > el_offset) {
                        $('html:not(:animated),body:not(:animated)').scrollTop(scoll_target);
                    }
                }

                win.trigger('av-content-el-height-changed', tab);
            }

            function trigger_default_open(hash) {
                if (!hash && window.location.hash) {
                    hash = window.location.hash;
                }

                if (!hash) {
                    return;
                }

                var open = tabs.filter('[data-fake-id="' + hash + '"]');

                if (open.length) {
                    if (!open.is('.active_tab')) {
                        open.trigger('mouseover');
                    }

                    window.scrollTo(0, container.offset().top - 70);
                }
            }

        });
    };


}(jQuery));