bundle.js

/*
 * anime.js v3.1.0
 * (c) 2019 Julian Garnier
 * Released under the MIT license
 * animejs.com
 */

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bounceUpOut":{defaultDuration:1e3,calls:[[{translateY:20},.2],[{opacity:[0,"easeInCirc",1],translateY:-1e3},.8]],reset:{translateY:0}},"transition.bounceDownIn":{defaultDuration:800,calls:[[{opacity:[1,0],translateY:[30,-1e3]},.6,{easing:"easeOutCirc"}],[{translateY:-10},.2],[{translateY:0},.2]]},"transition.bounceDownOut":{defaultDuration:1e3,calls:[[{translateY:-20},.2],[{opacity:[0,"easeInCirc",1],translateY:1e3},.8]],reset:{translateY:0}},"transition.bounceLeftIn":{defaultDuration:750,calls:[[{opacity:[1,0],translateX:[30,-1250]},.6,{easing:"easeOutCirc"}],[{translateX:-10},.2],[{translateX:0},.2]]},"transition.bounceLeftOut":{defaultDuration:750,calls:[[{translateX:30},.2],[{opacity:[0,"easeInCirc",1],translateX:-1250},.8]],reset:{translateX:0}},"transition.bounceRightIn":{defaultDuration:750,calls:[[{opacity:[1,0],translateX:[-30,1250]},.6,{easing:"easeOutCirc"}],[{translateX:10},.2],[{translateX:0},.2]]},"transition.bounceRightOut":{defaultDuration:750,calls:[[{translateX:-30},.2],[{opacity:[0,"easeInCirc",1],translateX:1250},.8]],reset:{translateX:0}},"transition.slideUpIn":{defaultDuration:900,calls:[[{opacity:[1,0],translateY:[0,20],translateZ:0}]]},"transition.slideUpOut":{defaultDuration:900,calls:[[{opacity:[0,1],translateY:-20,translateZ:0}]],reset:{translateY:0}},"transition.slideDownIn":{defaultDuration:900,calls:[[{opacity:[1,0],translateY:[0,-20],translateZ:0}]]},"transition.slideDownOut":{defaultDuration:900,calls:[[{opacity:[0,1],translateY:20,translateZ:0}]],reset:{translateY:0}},"transition.slideLeftIn":{defaultDuration:1e3,calls:[[{opacity:[1,0],translateX:[0,-20],translateZ:0}]]},"transition.slideLeftOut":{defaultDuration:1050,calls:[[{opacity:[0,1],translateX:-20,translateZ:0}]],reset:{translateX:0}},"transition.slideRightIn":{defaultDuration:1e3,calls:[[{opacity:[1,0],translateX:[0,20],translateZ:0}]]},"transition.slideRightOut":{defaultDuration:1050,calls:[[{opacity:[0,1],translateX:20,translateZ:0}]],reset:{translateX:0}},"transition.slideUpBigIn":{defaultDuration:850,calls:[[{opacity:[1,0],translateY:[0,75],translateZ:0}]]},"transition.slideUpBigOut":{defaultDuration:800,calls:[[{opacity:[0,1],translateY:-75,translateZ:0}]],reset:{translateY:0}},"transition.slideDownBigIn":{defaultDuration:850,calls:[[{opacity:[1,0],translateY:[0,-75],translateZ:0}]]},"transition.slideDownBigOut":{defaultDuration:800,calls:[[{opacity:[0,1],translateY:75,translateZ:0}]],reset:{translateY:0}},"transition.slideLeftBigIn":{defaultDuration:800,calls:[[{opacity:[1,0],translateX:[0,-75],translateZ:0}]]},"transition.slideLeftBigOut":{defaultDuration:750,calls:[[{opacity:[0,1],translateX:-75,translateZ:0}]],reset:{translateX:0}},"transition.slideRightBigIn":{defaultDuration:800,calls:[[{opacity:[1,0],translateX:[0,75],translateZ:0}]]},"transition.slideRightBigOut":{defaultDuration:750,calls:[[{opacity:[0,1],translateX:75,translateZ:0}]],reset:{translateX:0}},"transition.perspectiveUpIn":{defaultDuration:800,calls:[[{opacity:[1,0],transformPerspective:[800,800],transformOriginX:[0,0],transformOriginY:["100%","100%"],rotateX:[0,-180]}]],reset:{transformPerspective:0,transformOriginX:"50%",transformOriginY:"50%"}},"transition.perspectiveUpOut":{defaultDuration:850,calls:[[{opacity:[0,1],transformPerspective:[800,800],transformOriginX:[0,0],transformOriginY:["100%","100%"],rotateX:-180}]],reset:{transformPerspective:0,transformOriginX:"50%",transformOriginY:"50%",rotateX:0}},"transition.perspectiveDownIn":{defaultDuration:800,calls:[[{opacity:[1,0],transformPerspective:[800,800],transformOriginX:[0,0],transformOriginY:[0,0],rotateX:[0,180]}]],reset:{transformPerspective:0,transformOriginX:"50%",transformOriginY:"50%"}},"transition.perspectiveDownOut":{defaultDuration:850,calls:[[{opacity:[0,1],transformPerspective:[800,800],transformOriginX:[0,0],transformOriginY:[0,0],rotateX:180}]],reset:{transformPerspective:0,transformOriginX:"50%",transformOriginY:"50%",rotateX:0}},"transition.perspectiveLeftIn":{defaultDuration:950,calls:[[{opacity:[1,0],transformPerspective:[2e3,2e3],transformOriginX:[0,0],transformOriginY:[0,0],rotateY:[0,-180]}]],reset:{transformPerspective:0,transformOriginX:"50%",transformOriginY:"50%"}},"transition.perspectiveLeftOut":{defaultDuration:950,calls:[[{opacity:[0,1],transformPerspective:[2e3,2e3],transformOriginX:[0,0],transformOriginY:[0,0],rotateY:-180}]],reset:{transformPerspective:0,transformOriginX:"50%",transformOriginY:"50%",rotateY:0}},"transition.perspectiveRightIn":{defaultDuration:950,calls:[[{opacity:[1,0],transformPerspective:[2e3,2e3],transformOriginX:["100%","100%"],transformOriginY:[0,0],rotateY:[0,180]}]],reset:{transformPerspective:0,transformOriginX:"50%",transformOriginY:"50%"}},"transition.perspectiveRightOut":{defaultDuration:950,calls:[[{opacity:[0,1],transformPerspective:[2e3,2e3],transformOriginX:["100%","100%"],transformOriginY:[0,0],rotateY:180}]],reset:{transformPerspective:0,transformOriginX:"50%",transformOriginY:"50%",rotateY:0}}};for(var c in i.RegisterEffect.packagedEffects)i.RegisterEffect(c,i.RegisterEffect.packagedEffects[c]);i.RunSequence=function(t){var a=$.extend(!0,[],t);a.length>1&&($.each(a.reverse(),function(t,e){var r=a[t+1];if(r){var n=e.o||e.options,s=r.o||r.options,o=n&&n.sequenceQueue===!1?"begin":"complete",l=s&&s[o],c={};c[o]=function(){var t=r.e||r.elements,a=t.nodeType?[t]:t;l&&l.call(a,a),i(e)},r.o?r.o=$.extend({},s,c):r.options=$.extend({},s,c)}}),a.reverse()),i(a[0])}}(window.jQuery||window.Zepto||window,window,document)});;
/* global NexT, CONFIG */

HTMLElement.prototype.wrap = function(wrapper) {
  this.parentNode.insertBefore(wrapper, this);
  this.parentNode.removeChild(this);
  wrapper.appendChild(this);
};

NexT.utils = {

  /**
   * Wrap images with fancybox.
   */
  wrapImageWithFancyBox: function() {
    document.querySelectorAll('.post-body :not(a) > img, .post-body > img').forEach(element => {
      var $image = $(element);
      var imageLink = $image.attr('data-src') || $image.attr('src');
      var $imageWrapLink = $image.wrap(`<a class="fancybox fancybox.image" href="${imageLink}" itemscope itemtype="http://schema.org/ImageObject" itemprop="url"></a>`).parent('a');
      if ($image.is('.post-gallery img')) {
        $imageWrapLink.attr('data-fancybox', 'gallery').attr('rel', 'gallery');
      } else if ($image.is('.group-picture img')) {
        $imageWrapLink.attr('data-fancybox', 'group').attr('rel', 'group');
      } else {
        $imageWrapLink.attr('data-fancybox', 'default').attr('rel', 'default');
      }

      var imageTitle = $image.attr('title') || $image.attr('alt');
      if (imageTitle) {
        $imageWrapLink.append(`<p class="image-caption">${imageTitle}</p>`);
        // Make sure img title tag will show correctly in fancybox
        $imageWrapLink.attr('title', imageTitle).attr('data-caption', imageTitle);
      }
    });

    $.fancybox.defaults.hash = false;
    $('.fancybox').fancybox({
      loop   : true,
      helpers: {
        overlay: {
          locked: false
        }
      }
    });
  },

  registerExtURL: function() {
    document.querySelectorAll('.exturl').forEach(element => {
      element.addEventListener('click', event => {
        var exturl = event.currentTarget.getAttribute('data-url');
        var decurl = decodeURIComponent(escape(window.atob(exturl)));
        window.open(decurl, '_blank', 'noopener');
        return false;
      });
    });
  },

  /**
   * One-click copy code support.
   */
  registerCopyCode: function() {
    document.querySelectorAll('figure.highlight').forEach(element => {
      const box = document.createElement('div');
      element.wrap(box);
      box.classList.add('highlight-container');
      box.insertAdjacentHTML('beforeend', '<div class="copy-btn"><i class="fa fa-clipboard"></i></div>');
      var button = element.parentNode.querySelector('.copy-btn');
      button.addEventListener('click', event => {
        var target = event.currentTarget;
        var code = [...target.parentNode.querySelectorAll('.code .line')].map(line => line.innerText).join('\n');
        var ta = document.createElement('textarea');
        ta.style.top = window.scrollY + 'px'; // Prevent page scrolling
        ta.style.position = 'absolute';
        ta.style.opacity = '0';
        ta.readOnly = true;
        ta.value = code;
        document.body.append(ta);
        const selection = document.getSelection();
        const selected = selection.rangeCount > 0 ? selection.getRangeAt(0) : false;
        ta.select();
        ta.setSelectionRange(0, code.length);
        ta.readOnly = false;
        var result = document.execCommand('copy');
        if (CONFIG.copycode.show_result) {
          target.querySelector('i').className = result ? 'fa fa-check' : 'fa fa-times';
        }
        ta.blur(); // For iOS
        target.blur();
        if (selected) {
          selection.removeAllRanges();
          selection.addRange(selected);
        }
        document.body.removeChild(ta);
      });
      button.addEventListener('mouseleave', event => {
        setTimeout(() => {
          event.target.querySelector('i').className = 'fa fa-clipboard';
        }, 300);
      });
    });
  },

  wrapTableWithBox: function() {
    document.querySelectorAll('table').forEach(element => {
      const box = document.createElement('div');
      box.className = 'table-container';
      element.wrap(box);
    });
  },

  registerVideoIframe: function() {
    document.querySelectorAll('iframe').forEach(element => {
      const supported = [
        'www.youtube.com',
        'player.vimeo.com',
        'player.youku.com',
        'player.bilibili.com',
        'www.tudou.com'
      ].some(host => element.src.includes(host));
      if (supported && !element.parentNode.matches('.video-container')) {
        const box = document.createElement('div');
        box.className = 'video-container';
        element.wrap(box);
        let width = Number(element.width);
        let height = Number(element.height);
        if (width && height) {
          element.parentNode.style.paddingTop = (height / width * 100) + '%';
        }
      }
    });
  },

  registerScrollPercent: function() {
    var THRESHOLD = 50;
    var backToTop = document.querySelector('.back-to-top');
    var readingProgressBar = document.querySelector('.reading-progress-bar');
    // For init back to top in sidebar if page was scrolled after page refresh.
    window.addEventListener('scroll', () => {
      var scrollPercent;
      if (backToTop || readingProgressBar) {
        var docHeight = document.querySelector('.container').offsetHeight;
        var winHeight = window.innerHeight;
        var contentVisibilityHeight = docHeight > winHeight ? docHeight - winHeight : document.body.scrollHeight - winHeight;
        var scrollPercentRounded = Math.round(100 * window.scrollY / contentVisibilityHeight);
        scrollPercent = Math.min(scrollPercentRounded, 100) + '%';
      }
      if (backToTop) {
        backToTop.classList.toggle('back-to-top-on', window.scrollY > THRESHOLD);
        backToTop.querySelector('span').innerText = scrollPercent;
      }
      if (readingProgressBar) {
        readingProgressBar.style.width = scrollPercent;
      }
    });

    backToTop && backToTop.addEventListener('click', () => {
      window.anime({
        targets  : document.scrollingElement,
        duration : 500,
        easing   : 'linear',
        scrollTop: 0
      });
    });
  },

  /**
   * Tabs tag listener (without twitter bootstrap).
   */
  registerTabsTag: function() {
    // Binding `nav-tabs` & `tab-content` by real time permalink changing.
    document.querySelectorAll('.tabs ul.nav-tabs .tab').forEach(element => {
      element.addEventListener('click', event => {
        event.preventDefault();
        var target = event.currentTarget;
        // Prevent selected tab to select again.
        if (!target.classList.contains('active')) {
          // Add & Remove active class on `nav-tabs` & `tab-content`.
          [...target.parentNode.children].forEach(element => {
            element.classList.remove('active');
          });
          target.classList.add('active');
          var tActive = document.getElementById(target.querySelector('a').getAttribute('href').replace('#', ''));
          [...tActive.parentNode.children].forEach(element => {
            element.classList.remove('active');
          });
          tActive.classList.add('active');
          // Trigger event
          tActive.dispatchEvent(new Event('tabs:click', {
            bubbles: true
          }));
        }
      });
    });

    window.dispatchEvent(new Event('tabs:register'));
  },

  registerCanIUseTag: function() {
    // Get responsive height passed from iframe.
    window.addEventListener('message', event => {
      var data = event.data;
      if ((typeof data === 'string') && (data.indexOf('ciu_embed') > -1)) {
        var featureID = data.split(':')[1];
        var height = data.split(':')[2];
        document.querySelector(`iframe[data-feature=${featureID}]`).style.height = parseInt(height, 10) + 'px';
      }
    }, false);
  },

  registerActiveMenuItem: function() {
    document.querySelectorAll('.menu-item').forEach(element => {
      var target = element.querySelector('a[href]');
      if (!target) return;
      var isSamePath = target.pathname === location.pathname || target.pathname === location.pathname.replace('index.html', '');
      var isSubPath = target.pathname !== CONFIG.root && location.pathname.indexOf(target.pathname) === 0;
      element.classList.toggle('menu-item-active', target.hostname === location.hostname && (isSamePath || isSubPath));
    });
  },

  registerSidebarTOC: function() {
    const navItems = document.querySelectorAll('.post-toc li');
    const sections = [...navItems].map(element => {
      var link = element.querySelector('a.nav-link');
      // TOC item animation navigate.
      link.addEventListener('click', event => {
        event.preventDefault();
        var target = document.getElementById(event.currentTarget.getAttribute('href').replace('#', ''));
        var offset = target.getBoundingClientRect().top + window.scrollY;
        window.anime({
          targets  : document.scrollingElement,
          duration : 500,
          easing   : 'linear',
          scrollTop: offset + 10
        });
      });
      return document.getElementById(link.getAttribute('href').replace('#', ''));
    });

    var tocElement = document.querySelector('.post-toc-wrap');
    function activateNavByIndex(target) {
      if (target.classList.contains('active-current')) return;

      document.querySelectorAll('.post-toc .active').forEach(element => {
        element.classList.remove('active', 'active-current');
      });
      target.classList.add('active', 'active-current');
      var parent = target.parentNode;
      while (!parent.matches('.post-toc')) {
        if (parent.matches('li')) parent.classList.add('active');
        parent = parent.parentNode;
      }
      // Scrolling to center active TOC element if TOC content is taller then viewport.
      window.anime({
        targets  : tocElement,
        duration : 200,
        easing   : 'linear',
        scrollTop: tocElement.scrollTop - (tocElement.offsetHeight / 2) + target.getBoundingClientRect().top - tocElement.getBoundingClientRect().top
      });
    }

    function findIndex(entries) {
      let index = 0;
      let entry = entries[index];
      if (entry.boundingClientRect.top > 0) {
        index = sections.indexOf(entry.target);
        return index === 0 ? 0 : index - 1;
      }
      for (; index < entries.length; index++) {
        if (entries[index].boundingClientRect.top <= 0) {
          entry = entries[index];
        } else {
          return sections.indexOf(entry.target);
        }
      }
      return sections.indexOf(entry.target);
    }

    function createIntersectionObserver(marginTop) {
      marginTop = Math.floor(marginTop + 10000);
      let intersectionObserver = new IntersectionObserver((entries, observe) => {
        let scrollHeight = document.documentElement.scrollHeight + 100;
        if (scrollHeight > marginTop) {
          observe.disconnect();
          createIntersectionObserver(scrollHeight);
          return;
        }
        let index = findIndex(entries);
        activateNavByIndex(navItems[index]);
      }, {
        rootMargin: marginTop + 'px 0px -100% 0px',
        threshold : 0
      });
      sections.forEach(element => {
        element && intersectionObserver.observe(element);
      });
    }
    createIntersectionObserver(document.documentElement.scrollHeight);
  },

  hasMobileUA: function() {
    var ua = navigator.userAgent;
    var pa = /iPad|iPhone|Android|Opera Mini|BlackBerry|webOS|UCWEB|Blazer|PSP|IEMobile|Symbian/g;
    return pa.test(ua);
  },

  isTablet: function() {
    return window.screen.width < 992 && window.screen.width > 767 && this.hasMobileUA();
  },

  isMobile: function() {
    return window.screen.width < 767 && this.hasMobileUA();
  },

  isDesktop: function() {
    return !this.isTablet() && !this.isMobile();
  },

  /**
   * Init Sidebar & TOC inner dimensions on all pages and for all schemes.
   * Need for Sidebar/TOC inner scrolling if content taller then viewport.
   */
  initSidebarDimension: function() {
    var sidebarNav = document.querySelector('.sidebar-nav');
    var sidebarNavHeight = sidebarNav.style.display !== 'none' ? sidebarNav.offsetHeight : 0;
    var sidebarOffset = CONFIG.sidebar.offset || 12;
    var sidebarb2tHeight = CONFIG.back2top.enable && CONFIG.back2top.sidebar ? document.querySelector('.back-to-top').offsetHeight : 0;
    var sidebarSchemePadding = (CONFIG.sidebar.padding * 2) + sidebarNavHeight + sidebarb2tHeight;
    // Margin of sidebar b2t: 8px -10px -20px, brings a different of 12px.
    if (CONFIG.scheme === 'Pisces' || CONFIG.scheme === 'Gemini') sidebarSchemePadding += (sidebarOffset * 2) - 12;
    // Initialize Sidebar & TOC Height.
    var sidebarWrapperHeight = document.body.offsetHeight - sidebarSchemePadding + 'px';
    document.querySelector('.site-overview-wrap').style.maxHeight = sidebarWrapperHeight;
    document.querySelector('.post-toc-wrap').style.maxHeight = sidebarWrapperHeight;
  },

  updateSidebarPosition: function() {
    var sidebarNav = document.querySelector('.sidebar-nav');
    var hasTOC = document.querySelector('.post-toc');
    if (hasTOC) {
      sidebarNav.style.display = '';
      sidebarNav.classList.add('motion-element');
      document.querySelector('.sidebar-nav-toc').click();
    } else {
      sidebarNav.style.display = 'none';
      sidebarNav.classList.remove('motion-element');
      document.querySelector('.sidebar-nav-overview').click();
    }
    NexT.utils.initSidebarDimension();
    if (!this.isDesktop() || CONFIG.scheme === 'Pisces' || CONFIG.scheme === 'Gemini') return;
    // Expand sidebar on post detail page by default, when post has a toc.
    var display = CONFIG.page.sidebar;
    if (typeof display !== 'boolean') {
      // There's no definition sidebar in the page front-matter.
      display = CONFIG.sidebar.display === 'always' || (CONFIG.sidebar.display === 'post' && hasTOC);
    }
    if (display) {
      window.dispatchEvent(new Event('sidebar:show'));
    }
  },

  getScript: function(url, callback, condition) {
    if (condition) {
      callback();
    } else {
      var script = document.createElement('script');
      script.onload = script.onreadystatechange = function(_, isAbort) {
        if (isAbort || !script.readyState || /loaded|complete/.test(script.readyState)) {
          script.onload = script.onreadystatechange = null;
          script = undefined;
          if (!isAbort && callback) setTimeout(callback, 0);
        }
      };
      script.src = url;
      document.head.appendChild(script);
    }
  },

  loadComments: function(element, callback) {
    if (!CONFIG.comments.lazyload || !element) {
      callback();
      return;
    }
    let intersectionObserver = new IntersectionObserver((entries, observer) => {
      let entry = entries[0];
      if (entry.isIntersecting) {
        callback();
        observer.disconnect();
      }
    });
    intersectionObserver.observe(element);
    return intersectionObserver;
  }
};
;
/* global NexT, CONFIG, Velocity */

if (window.$ && window.$.Velocity) window.Velocity = window.$.Velocity;

NexT.motion = {};

NexT.motion.integrator = {
  queue : [],
  cursor: -1,
  init  : function() {
    this.queue = [];
    this.cursor = -1;
    return this;
  },
  add: function(fn) {
    this.queue.push(fn);
    return this;
  },
  next: function() {
    this.cursor++;
    var fn = this.queue[this.cursor];
    typeof fn === 'function' && fn(NexT.motion.integrator);
  },
  bootstrap: function() {
    this.next();
  }
};

NexT.motion.middleWares = {
  logo: function(integrator) {
    var sequence = [];
    var brand = document.querySelector('.brand');
    var image = document.querySelector('.custom-logo-image');
    var title = document.querySelector('.site-title');
    var subtitle = document.querySelector('.site-subtitle');
    var logoLineTop = document.querySelector('.logo-line-before i');
    var logoLineBottom = document.querySelector('.logo-line-after i');

    brand && sequence.push({
      e: brand,
      p: {opacity: 1},
      o: {duration: 200}
    });

    function getMistLineSettings(element, translateX) {
      return {
        e: element,
        p: {translateX: translateX},
        o: {
          duration     : 500,
          sequenceQueue: false
        }
      };
    }

    function pushImageToSequence() {
      sequence.push({
        e: image,
        p: {opacity: 1, top: 0},
        o: {duration: 200}
      });
    }

    CONFIG.scheme === 'Mist' && logoLineTop && logoLineBottom
    && sequence.push(
      getMistLineSettings(logoLineTop, '100%'),
      getMistLineSettings(logoLineBottom, '-100%')
    );

    CONFIG.scheme === 'Muse' && image && pushImageToSequence();

    title && sequence.push({
      e: title,
      p: {opacity: 1, top: 0},
      o: {duration: 200}
    });

    subtitle && sequence.push({
      e: subtitle,
      p: {opacity: 1, top: 0},
      o: {duration: 200}
    });

    (CONFIG.scheme === 'Pisces' || CONFIG.scheme === 'Gemini') && image && pushImageToSequence();

    if (sequence.length > 0) {
      sequence[sequence.length - 1].o.complete = function() {
        integrator.next();
      };
      Velocity.RunSequence(sequence);
    } else {
      integrator.next();
    }

    if (CONFIG.motion.async) {
      integrator.next();
    }
  },

  menu: function(integrator) {

    Velocity(document.querySelectorAll('.menu-item'), 'transition.slideDownIn', {
      display : null,
      duration: 200,
      complete: function() {
        integrator.next();
      }
    });

    if (CONFIG.motion.async) {
      integrator.next();
    }
  },

  postList: function(integrator) {

    var postBlock = document.querySelectorAll('.post-block, .pagination, .comments');
    var postBlockTransition = CONFIG.motion.transition.post_block;
    var postHeader = document.querySelectorAll('.post-header');
    var postHeaderTransition = CONFIG.motion.transition.post_header;
    var postBody = document.querySelectorAll('.post-body');
    var postBodyTransition = CONFIG.motion.transition.post_body;
    var collHeader = document.querySelectorAll('.collection-header');
    var collHeaderTransition = CONFIG.motion.transition.coll_header;
    var hasPost = postBlock.length > 0;

    if (hasPost) {
      var postMotionOptions = window.postMotionOptions || {
        stagger : 100,
        drag    : true,
        complete: function() {
          integrator.next();
        }
      };

      if (CONFIG.motion.transition.post_block) {
        Velocity(postBlock, 'transition.' + postBlockTransition, postMotionOptions);
      }
      if (CONFIG.motion.transition.post_header) {
        Velocity(postHeader, 'transition.' + postHeaderTransition, postMotionOptions);
      }
      if (CONFIG.motion.transition.post_body) {
        Velocity(postBody, 'transition.' + postBodyTransition, postMotionOptions);
      }
      if (CONFIG.motion.transition.coll_header) {
        Velocity(collHeader, 'transition.' + collHeaderTransition, postMotionOptions);
      }
    }
    if (CONFIG.scheme === 'Pisces' || CONFIG.scheme === 'Gemini') {
      integrator.next();
    }
  },

  sidebar: function(integrator) {
    var sidebarAffix = document.querySelector('.sidebar-inner');
    var sidebarAffixTransition = CONFIG.motion.transition.sidebar;
    // Only for Pisces | Gemini.
    if (sidebarAffixTransition && (CONFIG.scheme === 'Pisces' || CONFIG.scheme === 'Gemini')) {
      Velocity(sidebarAffix, 'transition.' + sidebarAffixTransition, {
        display : null,
        duration: 200,
        complete: function() {
          // After motion complete need to remove transform from sidebar to let affix work on Pisces | Gemini.
          sidebarAffix.style.transform = 'initial';
        }
      });
    }
    integrator.next();
  }
};
;
/* global NexT, CONFIG */

var Affix = {
  init: function(element, options) {
    this.element = element;
    this.offset = options || 0;
    this.affixed = null;
    this.unpin = null;
    this.pinnedOffset = null;
    this.checkPosition();
    window.addEventListener('scroll', this.checkPosition.bind(this));
    window.addEventListener('click', this.checkPositionWithEventLoop.bind(this));
    window.matchMedia('(min-width: 992px)').addListener(event => {
      if (event.matches) {
        this.offset = NexT.utils.getAffixParam();
        this.checkPosition();
      }
    });
  },
  getState: function(scrollHeight, height, offsetTop, offsetBottom) {
    let scrollTop = window.scrollY;
    let targetHeight = window.innerHeight;
    if (offsetTop != null && this.affixed === 'top') return scrollTop < offsetTop ? 'top' : false;
    if (this.affixed === 'bottom') {
      if (offsetTop != null) return this.unpin <= this.element.getBoundingClientRect().top ? false : 'bottom';
      return scrollTop + targetHeight <= scrollHeight - offsetBottom ? false : 'bottom';
    }
    let initializing = this.affixed === null;
    let colliderTop = initializing ? scrollTop : this.element.getBoundingClientRect().top + scrollTop;
    let colliderHeight = initializing ? targetHeight : height;
    if (offsetTop != null && scrollTop <= offsetTop) return 'top';
    if (offsetBottom != null && (colliderTop + colliderHeight >= scrollHeight - offsetBottom)) return 'bottom';
    return false;
  },
  getPinnedOffset: function() {
    if (this.pinnedOffset) return this.pinnedOffset;
    this.element.classList.remove('affix-top', 'affix-bottom');
    this.element.classList.add('affix');
    return (this.pinnedOffset = this.element.getBoundingClientRect().top);
  },
  checkPositionWithEventLoop() {
    setTimeout(this.checkPosition.bind(this), 1);
  },
  checkPosition: function() {
    if (window.getComputedStyle(this.element).display === 'none') return;
    let height = this.element.offsetHeight - (CONFIG.sidebar.padding * 2);
    let offset = this.offset;
    let offsetTop = offset.top;
    let offsetBottom = offset.bottom;
    let scrollHeight = document.body.scrollHeight;
    let affix = this.getState(scrollHeight, height, offsetTop, offsetBottom);
    if (this.affixed !== affix) {
      if (this.unpin != null) this.element.style.top = '';
      let affixType = 'affix' + (affix ? '-' + affix : '');
      this.affixed = affix;
      this.unpin = affix === 'bottom' ? this.getPinnedOffset() : null;
      this.element.classList.remove('affix', 'affix-top', 'affix-bottom');
      this.element.classList.add(affixType);
    }
    if (affix === 'bottom') {
      this.element.style.top = scrollHeight - height - offsetBottom + 'px';
    }
  }
};

NexT.utils.getAffixParam = function() {
  const sidebarOffset = CONFIG.sidebar.offset || 12;

  let headerOffset = document.querySelector('.header-inner').offsetHeight + sidebarOffset;
  let footer = document.querySelector('.footer');
  let footerInner = document.querySelector('.footer-inner');
  let footerMargin = footer.offsetHeight - footerInner.offsetHeight;
  let footerOffset = footer.offsetHeight + footerMargin;

  document.querySelector('.sidebar').style.marginTop = headerOffset + 'px';

  return {
    top   : headerOffset - sidebarOffset,
    bottom: footerOffset
  };
};

window.addEventListener('DOMContentLoaded', () => {

  Affix.init(document.querySelector('.sidebar-inner'), NexT.utils.getAffixParam());
});
;
/* global NexT, CONFIG, Velocity */

NexT.boot = {};

NexT.boot.registerEvents = function() {

  NexT.utils.registerScrollPercent();
  NexT.utils.registerCanIUseTag();

  // Mobile top menu bar.
  document.querySelector('.site-nav-toggle .toggle').addEventListener('click', () => {
    event.currentTarget.classList.toggle('toggle-close');
    var siteNav = document.querySelector('.site-nav');
    var animateAction = siteNav.classList.contains('site-nav-on') ? 'slideUp' : 'slideDown';

    if (typeof Velocity === 'function') {
      Velocity(siteNav, animateAction, {
        duration: 200,
        complete: function() {
          siteNav.classList.toggle('site-nav-on');
        }
      });
    } else {
      siteNav.classList.toggle('site-nav-on');
    }
  });

  var TAB_ANIMATE_DURATION = 200;
  document.querySelectorAll('.sidebar-nav li').forEach((element, index) => {
    element.addEventListener('click', event => {
      var item = event.currentTarget;
      var activeTabClassName = 'sidebar-nav-active';
      var activePanelClassName = 'sidebar-panel-active';
      if (item.classList.contains(activeTabClassName)) return;

      var targets = document.querySelectorAll('.sidebar-panel');
      var target = targets[index];
      var currentTarget = targets[1 - index];
      window.anime({
        targets : currentTarget,
        duration: TAB_ANIMATE_DURATION,
        easing  : 'linear',
        opacity : 0,
        complete: () => {
          // Prevent adding TOC to Overview if Overview was selected when close & open sidebar.
          currentTarget.classList.remove(activePanelClassName);
          target.style.opacity = 0;
          target.classList.add(activePanelClassName);
          window.anime({
            targets : target,
            duration: TAB_ANIMATE_DURATION,
            easing  : 'linear',
            opacity : 1
          });
        }
      });

      [...item.parentNode.children].forEach(element => {
        element.classList.remove(activeTabClassName);
      });
      item.classList.add(activeTabClassName);
    });
  });

  window.addEventListener('resize', NexT.utils.initSidebarDimension);

  window.addEventListener('hashchange', () => {
    var tHash = location.hash;
    if (tHash !== '' && !tHash.match(/%\S{2}/)) {
      var target = document.querySelector(`.tabs ul.nav-tabs li a[href="${tHash}"]`);
      target && target.click();
    }
  });
};

NexT.boot.refresh = function() {

  /**
   * Register JS handlers by condition option.
   * Need to add config option in Front-End at 'layout/_partials/head.swig' file.
   */
  CONFIG.fancybox && NexT.utils.wrapImageWithFancyBox();
  CONFIG.mediumzoom && window.mediumZoom('.post-body :not(a) > img, .post-body > img');
  CONFIG.lazyload && window.lozad('.post-body img').observe();
  CONFIG.pangu && window.pangu.spacingPage();

  CONFIG.exturl && NexT.utils.registerExtURL();
  CONFIG.copycode.enable && NexT.utils.registerCopyCode();
  NexT.utils.registerTabsTag();
  NexT.utils.registerActiveMenuItem();
  NexT.utils.registerSidebarTOC();
  NexT.utils.wrapTableWithBox();
  NexT.utils.registerVideoIframe();
};

NexT.boot.motion = function() {
  // Define Motion Sequence & Bootstrap Motion.
  if (CONFIG.motion.enable) {
    NexT.motion.integrator
      .add(NexT.motion.middleWares.logo)
      .add(NexT.motion.middleWares.menu)
      .add(NexT.motion.middleWares.postList)
      .add(NexT.motion.middleWares.sidebar)
      .bootstrap();
  }
  NexT.utils.updateSidebarPosition();
};

window.addEventListener('DOMContentLoaded', () => {
  NexT.boot.registerEvents();
  NexT.boot.refresh();
  NexT.boot.motion();
});