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!(function () {
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'use strict';
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// Ratchet's layout includes fixed position headers & footers that should always
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// appear before the main .content div within <body>
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//
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// These fixed bars will have new content swapped in, ignoring any
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// transitions (slide-in, slide-out & fade).
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//
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// These following selectors define which elements are transitioned with
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// simple DOM replacement and are always immediate children of <body>
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var barSelectors = [
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'.bar-tab',
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'.bar-nav',
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'.bar-footer',
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'.bar-header-secondary'
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];
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// Other than any fixed bars, '.content' should be the only other child of body
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var contentSelector = '.content';
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// For any bar elements in `newMarkup`, either:
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// * replace an existing bar elements with new content
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// * add new bar elements when an existing one isn't present
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// * remove any bar elements not found in `newMarkup`
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var updateBars = function (newMarkup) {
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for (var i = 0; i < barSelectors.length; i++) {
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var selector = barSelectors[i];
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var newBar = newMarkup.querySelector(selector);
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var existingBar = document.querySelector(selector);
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if (newBar) {
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displayBar(newBar, existingBar);
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} else if (existingBar) {
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existingBar.parentNode.removeChild(existingBar);
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}
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}
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};
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var displayBar = function (bar, container) {
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if (container) {
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container.innerHTML = '';
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container.appendChild(bar);
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} else {
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// per Ratchet's CSS, bar elements must be the first thing in <body>
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// here we assume `.content` is an immediate child of <body>
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document.body.insertBefore(bar, document.querySelector(contentSelector));
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}
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};
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var transitionContent = function (swap, container, transition, complete) {
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var enter;
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var containerDirection;
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var swapDirection;
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enter = /in$/.test(transition);
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if (transition === 'fade') {
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container.classList.add('in');
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container.classList.add('fade');
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swap.classList.add('fade');
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}
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if (/slide/.test(transition)) {
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swap.classList.add('sliding-in', enter ? 'right' : 'left');
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swap.classList.add('sliding');
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container.classList.add('sliding');
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}
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container.parentNode.insertBefore(swap, container);
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if (transition === 'fade') {
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container.offsetWidth; // force reflow
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container.classList.remove('in');
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var fadeContainerEnd = function () {
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container.removeEventListener(window.RATCHET.getTransitionEnd, fadeContainerEnd);
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swap.classList.add('in');
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swap.addEventListener(window.RATCHET.getTransitionEnd, fadeSwapEnd);
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};
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var fadeSwapEnd = function () {
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swap.removeEventListener(window.RATCHET.getTransitionEnd, fadeSwapEnd);
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container.parentNode.removeChild(container);
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swap.classList.remove('fade');
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swap.classList.remove('in');
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complete && complete();
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};
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container.addEventListener(window.RATCHET.getTransitionEnd, fadeContainerEnd);
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}
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if (/slide/.test(transition)) {
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var slideEnd = function () {
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swap.removeEventListener(window.RATCHET.getTransitionEnd, slideEnd);
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swap.classList.remove('sliding', 'sliding-in');
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swap.classList.remove(swapDirection);
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container.parentNode.removeChild(container);
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complete && complete();
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};
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container.offsetWidth; // force reflow
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swapDirection = enter ? 'right' : 'left';
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containerDirection = enter ? 'left' : 'right';
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container.classList.add(containerDirection);
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swap.classList.remove(swapDirection);
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swap.addEventListener('webkitTransitionEnd', slideEnd);
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}
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};
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// `contents` must include an element with the class 'content' and can
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// optionally include a number of Ratchet bar elements (see `barSelectors`)
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var TRANSITION = function (contents, transition, complete) {
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if (transition) {
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updateBars(contents);
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var existingContentDiv = document.querySelector(contentSelector);
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var newContentDiv = contents.querySelector(contentSelector);
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transitionContent(newContentDiv, existingContentDiv,
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transition, complete);
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} else {
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document.body.innerHTML = '';
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document.body.appendChild(contents);
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complete && complete();
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}
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};
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window.TRANSITION = TRANSITION;
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}());
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