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(function() {
'use strict';
/**
* tabs
*
* @description The Tabs component.
* @param {Object} options The options hash
*/
var tabs = function(options) {
var el = document.querySelector(options.el);
var tabNavigationLinks = el.querySelectorAll(options.tabNavigationLinks);
var tabContentContainers = el.querySelectorAll(options.tabContentContainers);
var activeIndex = 0;
var initCalled = false;
/**
* init
*
* @description Initializes the component by removing the no-js class from
* the component, and attaching event listeners to each of the nav items.
* Returns nothing.
*/
var init = function() {
if (!initCalled) {
initCalled = true;
el.classList.remove('no-js');
for (var i = 0; i < tabNavigationLinks.length; i++) {
var link = tabNavigationLinks[i];
handleClick(link, i);
}
}
};
/**
* handleClick
*
* @description Handles click event listeners on each of the links in the
* tab navigation. Returns nothing.
* @param {HTMLElement} link The link to listen for events on
* @param {Number} index The index of that link
*/
var handleClick = function(link, index) {
link.addEventListener('click', function(e) {
e.preventDefault();
goToTab(index);
});
};
/**
* goToTab
*
* @description Goes to a specific tab based on index. Returns nothing.
* @param {Number} index The index of the tab to go to
*/
var goToTab = function(index) {
if (index !== activeIndex && index >= 0 && index <= tabNavigationLinks.length) {
tabNavigationLinks[activeIndex].classList.remove('is-active');
tabNavigationLinks[index].classList.add('is-active');
tabContentContainers[activeIndex].classList.remove('is-active');
tabContentContainers[index].classList.add('is-active');
activeIndex = index;
}
};
/**
* Returns init and goToTab
*/
return {
init: init,
goToTab: goToTab
};
};
/**
* Attach to global namespace
*/
window.tabs = tabs;
})();