codetabs.js

require([
    'jquery'
], function($) {
    
    var setupPage = function(){
        if(localStorage){
            var lastSelected = localStorage.getItem('codetabs-selected');
            if(lastSelected){
                $('.codetabs').each(function(){
                    var $tabs = $(this);
                    var tabId = $tabs.find('.codetabs-header .tab')
                            .filter(function(){ return $(this).text() == lastSelected; })
                            .data('codetab');
                    if(typeof tabId !== 'undefined'){
                        setActiveTab($tabs,tabId);
                    }                    
                });
            }
        }
    };
    
    var setActiveTab = function($tabs,tabId){
        $tabs.find('.tab').removeClass('active');
        $tabs.find('.tab[data-codetab="' + tabId + '"]').addClass('active');
    };
    
    $(document).on('click.plugin.codetabs', '.codetabs .codetabs-header .tab', function(e) {
        var $btn = $(e.target);
        var $tabs = $btn.parents('.codetabs');
        var tabId = $btn.data('codetab');
        setActiveTab($tabs,tabId);
        if(localStorage){
            localStorage.setItem('codetabs-selected',$btn.text());
        }
    });
    
    gitbook.events.bind('start', setupPage);
    gitbook.events.bind('page.change', setupPage);
});