ratchet/dist/js/ratchet.js

/*!
 * =====================================================
 * Ratchet v2.0.2 (http://goratchet.com)
 * Copyright 2015 Connor Sears
 * Licensed under MIT (https://github.com/twbs/ratchet/blob/master/LICENSE)
 *
 * v2.0.2 designed by @connors.
 * =====================================================
 */
/* ========================================================================
 * Ratchet: common.js v2.0.2
 * http://goratchet.com/
 * ========================================================================
 * Copyright 2015 Connor Sears
 * Licensed under MIT (https://github.com/twbs/ratchet/blob/master/LICENSE)
 * ======================================================================== */

!(function () {
  'use strict';

  // Compatible With CustomEvent
  if (!window.CustomEvent) {
    window.CustomEvent = function (type, config) {
      var e = document.createEvent('CustomEvent');
      e.initCustomEvent(type, config.bubbles, config.cancelable, config.detail);
      return e;
    };
  }

  // Create Ratchet namespace
  if (typeof window.RATCHET === 'undefined') {
    window.RATCHET = {};
  }

  // Original script from http://davidwalsh.name/vendor-prefix
  window.RATCHET.getBrowserCapabilities = (function () {
    var styles = window.getComputedStyle(document.documentElement, '');
    var pre = (Array.prototype.slice
        .call(styles)
        .join('')
        .match(/-(moz|webkit|ms)-/) || (styles.OLink === '' && ['', 'o'])
      )[1];
    return {
      prefix: '-' + pre + '-',
      transform: pre[0].toUpperCase() + pre.substr(1) + 'Transform'
    };
  })();

  window.RATCHET.getTransitionEnd = (function () {
    var el = document.createElement('ratchet');
    var transEndEventNames = {
      WebkitTransition : 'webkitTransitionEnd',
      MozTransition : 'transitionend',
      OTransition : 'oTransitionEnd otransitionend',
      transition : 'transitionend'
    };

    for (var name in transEndEventNames) {
      if (el.style[name] !== undefined) {
        return transEndEventNames[name];
      }
    }

    return transEndEventNames.transition;
  })();
}());

/* ========================================================================
 * Ratchet: modals.js v2.0.2
 * http://goratchet.com/components#modals
 * ========================================================================
 * Copyright 2015 Connor Sears
 * Licensed under MIT (https://github.com/twbs/ratchet/blob/master/LICENSE)
 * ======================================================================== */

!(function () {
  'use strict';

  var eventModalOpen = new CustomEvent('modalOpen', {
    bubbles: true,
    cancelable: true
  });
  var eventModalClose = new CustomEvent('modalClose', {
    bubbles: true,
    cancelable: true
  });
  var findModals = function (target) {
    var i;
    var modals = document.querySelectorAll('a');

    for (; target && target !== document; target = target.parentNode) {
      for (i = modals.length; i--;) {
        if (modals[i] === target) {
          return target;
        }
      }
    }
  };

  var getModal = function (event) {
    var modalToggle = findModals(event.target);
    if (modalToggle && modalToggle.hash) {
      return document.querySelector(modalToggle.hash);
    }
  };

  window.addEventListener('touchend', function (event) {
    var modal = getModal(event);
    if (modal && modal.classList.contains('modal')) {
      var eventToDispatch = eventModalOpen;
      if (modal.classList.contains('active')) {
        eventToDispatch = eventModalClose;
      }
      modal.dispatchEvent(eventToDispatch);
      modal.classList.toggle('active');
    }
    event.preventDefault(); // prevents rewriting url (apps can still use hash values in url)
  });
}());

/* ========================================================================
 * Ratchet: popovers.js v2.0.2
 * http://goratchet.com/components#popovers
 * ========================================================================
 * Copyright 2015 Connor Sears
 * Licensed under MIT (https://github.com/twbs/ratchet/blob/master/LICENSE)
 * ======================================================================== */

!(function () {
  'use strict';

  var popover;

  var findPopovers = function (target) {
    var i;
    var popovers = document.querySelectorAll('a');

    for (; target && target !== document; target = target.parentNode) {
      for (i = popovers.length; i--;) {
        if (popovers[i] === target) {
          return target;
        }
      }
    }
  };

  var onPopoverHidden = function () {
    popover.style.display = 'none';
    popover.removeEventListener(window.RATCHET.getTransitionEnd, onPopoverHidden);
  };

  var backdrop = (function () {
    var element = document.createElement('div');

    element.classList.add('backdrop');

    element.addEventListener('touchend', function () {
      popover.addEventListener(window.RATCHET.getTransitionEnd, onPopoverHidden);
      popover.classList.remove('visible');
      popover.parentNode.removeChild(backdrop);
    });

    return element;
  }());

  var getPopover = function (e) {
    var anchor = findPopovers(e.target);

    if (!anchor || !anchor.hash || (anchor.hash.indexOf('/') > 0)) {
      return;
    }

    try {
      popover = document.querySelector(anchor.hash);
    } catch (error) {
      popover = null;
    }

    if (popover === null) {
      return;
    }

    if (!popover || !popover.classList.contains('popover')) {
      return;
    }

    return popover;
  };

  var showHidePopover = function (e) {
    var popover = getPopover(e);

    if (!popover) {
      return;
    }

    popover.style.display = 'block';
    popover.offsetHeight;
    popover.classList.add('visible');

    popover.parentNode.appendChild(backdrop);
  };

  window.addEventListener('touchend', showHidePopover);

}());

/* ========================================================================
 * Ratchet: push.js v2.0.2
 * http://goratchet.com/components#push
 * ========================================================================
 * inspired by @defunkt's jquery.pjax.js
 * Copyright 2015 Connor Sears
 * Licensed under MIT (https://github.com/twbs/ratchet/blob/master/LICENSE)
 * ======================================================================== */

/* global _gaq: true */

!(function () {
  'use strict';

  var noop = function () {};


  // Pushstate caching
  // ==================

  var isScrolling;
  var maxCacheLength = 20;
  var cacheMapping   = sessionStorage;
  var domCache       = {};
  // Change these to unquoted camelcase in the next major version bump
  var transitionMap  = {
    'slide-in'  : 'slide-out',
    'slide-out' : 'slide-in',
    fade     : 'fade'
  };

  var bars = {
    bartab             : '.bar-tab',
    barnav             : '.bar-nav',
    barfooter          : '.bar-footer',
    barheadersecondary : '.bar-header-secondary'
  };

  var cacheReplace = function (data, updates) {
    PUSH.id = data.id;
    if (updates) {
      data = getCached(data.id);
    }
    cacheMapping[data.id] = JSON.stringify(data);
    window.history.replaceState(data.id, data.title, data.url);
  };

  var cachePush = function () {
    var id = PUSH.id;

    var cacheForwardStack = JSON.parse(cacheMapping.cacheForwardStack || '[]');
    var cacheBackStack    = JSON.parse(cacheMapping.cacheBackStack    || '[]');

    cacheBackStack.push(id);

    while (cacheForwardStack.length) {
      delete cacheMapping[cacheForwardStack.shift()];
    }
    while (cacheBackStack.length > maxCacheLength) {
      delete cacheMapping[cacheBackStack.shift()];
    }

    if (getCached(PUSH.id).url) {
      window.history.pushState(null, '', getCached(PUSH.id).url);
    }

    cacheMapping.cacheForwardStack = JSON.stringify(cacheForwardStack);
    cacheMapping.cacheBackStack    = JSON.stringify(cacheBackStack);
  };

  var cachePop = function (id, direction) {
    var forward           = direction === 'forward';
    var cacheForwardStack = JSON.parse(cacheMapping.cacheForwardStack || '[]');
    var cacheBackStack    = JSON.parse(cacheMapping.cacheBackStack    || '[]');
    var pushStack         = forward ? cacheBackStack    : cacheForwardStack;
    var popStack          = forward ? cacheForwardStack : cacheBackStack;

    if (PUSH.id) {
      pushStack.push(PUSH.id);
    }
    popStack.pop();

    cacheMapping.cacheForwardStack = JSON.stringify(cacheForwardStack);
    cacheMapping.cacheBackStack    = JSON.stringify(cacheBackStack);
  };

  var getCached = function (id) {
    return JSON.parse(cacheMapping[id] || null) || {};
  };

  var getTarget = function (e) {
    var target = findTarget(e.target);

    if (!target ||
        e.which > 1 ||
        e.metaKey ||
        e.ctrlKey ||
        isScrolling ||
        location.protocol !== target.protocol ||
        location.host     !== target.host ||
        !target.hash && /#/.test(target.href) ||
        target.hash && target.href.replace(target.hash, '') === location.href.replace(location.hash, '') ||
        target.getAttribute('data-ignore') === 'push') { return; }

    return target;
  };


  // Main event handlers (touchend, popstate)
  // ==========================================

  var touchend = function (e) {
    var target = getTarget(e);

    if (!target) {
      return;
    }

    e.preventDefault();

    PUSH({
      url        : target.href,
      hash       : target.hash,
      timeout    : target.getAttribute('data-timeout'),
      transition : target.getAttribute('data-transition')
    });
  };

  var popstate = function (e) {
    var key;
    var barElement;
    var activeObj;
    var activeDom;
    var direction;
    var transition;
    var transitionFrom;
    var transitionFromObj;
    var id = e.state;

    if (!id || !cacheMapping[id]) {
      return;
    }

    direction = PUSH.id < id ? 'forward' : 'back';

    cachePop(id, direction);

    activeObj = getCached(id);
    activeDom = domCache[id];

    if (activeObj.title) {
      document.title = activeObj.title;
    }

    if (direction === 'back') {
      transitionFrom    = JSON.parse(direction === 'back' ? cacheMapping.cacheForwardStack : cacheMapping.cacheBackStack);
      transitionFromObj = getCached(transitionFrom[transitionFrom.length - 1]);
    } else {
      transitionFromObj = activeObj;
    }

    if (direction === 'back' && !transitionFromObj.id) {
      return (PUSH.id = id);
    }

    transition = direction === 'back' ? transitionMap[transitionFromObj.transition] : transitionFromObj.transition;

    if (!activeDom) {
      return PUSH({
        id         : activeObj.id,
        url        : activeObj.url,
        title      : activeObj.title,
        timeout    : activeObj.timeout,
        transition : transition,
        ignorePush : true
      });
    }

    if (transitionFromObj.transition) {
      activeObj = extendWithDom(activeObj, '.content', activeDom.cloneNode(true));
      for (key in bars) {
        if (bars.hasOwnProperty(key)) {
          barElement = document.querySelector(bars[key]);
          if (activeObj[key]) {
            swapContent(activeObj[key], barElement);
          } else if (barElement) {
            barElement.parentNode.removeChild(barElement);
          }
        }
      }
    }

    swapContent(
      (activeObj.contents || activeDom).cloneNode(true),
      document.querySelector('.content'),
      transition, function () {
        triggerStateChange();
      }
    );

    PUSH.id = id;

    document.body.offsetHeight; // force reflow to prevent scroll
  };


  // Core PUSH functionality
  // =======================

  var PUSH = function (options) {
    var key;
    var xhr = PUSH.xhr;

    options.container = options.container || options.transition ? document.querySelector('.content') : document.body;

    var isFileProtocol = /^file:/.test(window.location.protocol);

    for (key in bars) {
      if (bars.hasOwnProperty(key)) {
        options[key] = options[key] || document.querySelector(bars[key]);
      }
    }

    if (xhr && xhr.readyState < 4) {
      xhr.onreadystatechange = noop;
      xhr.abort();
    }

    xhr = new XMLHttpRequest();
    if (isFileProtocol) {
      xhr.open('GET', options.url, false);
    } else {
      xhr.open('GET', options.url, true);
      xhr.setRequestHeader('X-PUSH', 'true');

      xhr.onreadystatechange = function () {
        if (options._timeout) {
          clearTimeout(options._timeout);
        }
        if (xhr.readyState === 4) {
          if (xhr.status === 200) {
            success(xhr, options);
          } else {
            failure(options.url);
          }
        }
      };
    }

    if (!PUSH.id) {
      cacheReplace({
        id         : +new Date(),
        url        : window.location.href,
        title      : document.title,
        timeout    : options.timeout,
        transition : options.transition
      });
    }

    cacheCurrentContent();

    if (options.timeout) {
      options._timeout = setTimeout(function () {  xhr.abort('timeout'); }, options.timeout);
    }

    xhr.send();

    if (isFileProtocol) {
      if (xhr.status === 0 || xhr.status === 200) {
        success(xhr, options);
      } else {
        failure(options.url);
      }
    }

    if (xhr.readyState && !options.ignorePush) {
      cachePush();
    }
  };

  function cacheCurrentContent () {
    domCache[PUSH.id] = document.body.cloneNode(true);
  }


  // Main XHR handlers
  // =================

  var success = function (xhr, options) {
    var key;
    var barElement;
    var data = parseXHR(xhr, options);

    if (!data.contents) {
      return locationReplace(options.url);
    }

    if (data.title) {
      document.title = data.title;
    }

    if (options.transition) {
      for (key in bars) {
        if (bars.hasOwnProperty(key)) {
          barElement = document.querySelector(bars[key]);
          if (data[key]) {
            swapContent(data[key], barElement);
          } else if (barElement) {
            barElement.parentNode.removeChild(barElement);
          }
        }
      }
    }

    swapContent(data.contents, options.container, options.transition, function () {
      cacheReplace({
        id         : options.id || +new Date(),
        url        : data.url,
        title      : data.title,
        timeout    : options.timeout,
        transition : options.transition
      }, options.id);
      triggerStateChange();
    });

    if (!options.ignorePush && window._gaq) {
      _gaq.push(['_trackPageview']); // google analytics
    }
    if (!options.hash) {
      return;
    }
  };

  var failure = function (url) {
    throw new Error('Could not get: ' + url);
  };


  // PUSH helpers
  // ============

  var swapContent = function (swap, container, transition, complete) {
    var enter;
    var containerDirection;
    var swapDirection;

    if (!transition) {
      if (container) {
        container.innerHTML = swap.innerHTML;
      } else if (swap.classList.contains('content')) {
        document.body.appendChild(swap);
      } else {
        document.body.insertBefore(swap, document.querySelector('.content'));
      }
    } else {
      enter = /in$/.test(transition);

      if (transition === 'fade') {
        container.classList.add('in');
        container.classList.add('fade');
        swap.classList.add('fade');
      }

      if (/slide/.test(transition)) {
        swap.classList.add('sliding-in', enter ? 'right' : 'left');
        swap.classList.add('sliding');
        container.classList.add('sliding');
      }

      container.parentNode.insertBefore(swap, container);
    }

    if (!transition) {
      if (complete) {
        complete();
      }
    }

    if (transition === 'fade') {
      container.offsetWidth; // force reflow
      container.classList.remove('in');
      var fadeContainerEnd = function () {
        container.removeEventListener(window.RATCHET.getTransitionEnd, fadeContainerEnd);
        swap.classList.add('in');
        swap.addEventListener(window.RATCHET.getTransitionEnd, fadeSwapEnd);
      };
      var fadeSwapEnd = function () {
        swap.removeEventListener(window.RATCHET.getTransitionEnd, fadeSwapEnd);
        container.parentNode.removeChild(container);
        swap.classList.remove('fade');
        swap.classList.remove('in');
        if (complete) {
          complete();
        }
      };
      container.addEventListener(window.RATCHET.getTransitionEnd, fadeContainerEnd);

    }

    if (/slide/.test(transition)) {
      var slideEnd = function () {
        swap.removeEventListener(window.RATCHET.getTransitionEnd, slideEnd);
        swap.classList.remove('sliding', 'sliding-in');
        swap.classList.remove(swapDirection);
        container.parentNode.removeChild(container);
        if (complete) {
          complete();
        }
      };

      container.offsetWidth; // force reflow
      swapDirection      = enter ? 'right' : 'left';
      containerDirection = enter ? 'left' : 'right';
      container.classList.add(containerDirection);
      swap.classList.remove(swapDirection);
      swap.addEventListener(window.RATCHET.getTransitionEnd, slideEnd);
    }
  };

  var triggerStateChange = function () {
    var e = new CustomEvent('push', {
      detail: { state: getCached(PUSH.id) },
      bubbles: true,
      cancelable: true
    });

    window.dispatchEvent(e);
  };

  var findTarget = function (target) {
    var i;
    var toggles = document.querySelectorAll('a');

    for (; target && target !== document; target = target.parentNode) {
      for (i = toggles.length; i--;) {
        if (toggles[i] === target) {
          return target;
        }
      }
    }
  };

  var locationReplace = function (url) {
    window.history.replaceState(null, '', '#');
    window.location.replace(url);
  };

  var extendWithDom = function (obj, fragment, dom) {
    var i;
    var result = {};

    for (i in obj) {
      if (obj.hasOwnProperty(i)) {
        result[i] = obj[i];
      }
    }

    Object.keys(bars).forEach(function (key) {
      var el = dom.querySelector(bars[key]);
      if (el) {
        el.parentNode.removeChild(el);
      }
      result[key] = el;
    });

    result.contents = dom.querySelector(fragment);

    return result;
  };

  var parseXHR = function (xhr, options) {
    var head;
    var body;
    var data = {};
    var responseText = xhr.responseText;

    data.url = options.url;

    if (!responseText) {
      return data;
    }

    if (/<html/i.test(responseText)) {
      head           = document.createElement('div');
      body           = document.createElement('div');
      head.innerHTML = responseText.match(/<head[^>]*>([\s\S.]*)<\/head>/i)[0];
      body.innerHTML = responseText.match(/<body[^>]*>([\s\S.]*)<\/body>/i)[0];
    } else {
      head           = body = document.createElement('div');
      head.innerHTML = responseText;
    }

    data.title = head.querySelector('title') || document.querySelector('title');
    var text = 'innerText' in data.title ? 'innerText' : 'textContent';
    data.title = data.title && data.title[text].trim();

    if (options.transition) {
      data = extendWithDom(data, '.content', body);
    } else {
      data.contents = body;
    }

    return data;
  };


  // Attach PUSH event handlers
  // ==========================

  window.addEventListener('touchstart', function () { isScrolling = false; });
  window.addEventListener('touchmove', function () { isScrolling = true; });
  window.addEventListener('touchend', touchend);
  window.addEventListener('click', function (e) {
    if (getTarget(e)) {
      e.preventDefault();
    }
  });
  window.addEventListener('popstate', popstate);

  // TODO : Remove this line in the next major version
  window.PUSH = PUSH;
  window.RATCHET.push = PUSH;

}());

/* ========================================================================
 * Ratchet: segmented-controllers.js v2.0.2
 * http://goratchet.com/components#segmentedControls
 * ========================================================================
 * Copyright 2015 Connor Sears
 * Licensed under MIT (https://github.com/twbs/ratchet/blob/master/LICENSE)
 * ======================================================================== */

!(function () {
  'use strict';

  var getTarget = function (target) {
    var i;
    var segmentedControls = document.querySelectorAll('.segmented-control .control-item');

    for (; target && target !== document; target = target.parentNode) {
      for (i = segmentedControls.length; i--;) {
        if (segmentedControls[i] === target) {
          return target;
        }
      }
    }
  };

  window.addEventListener('touchend', function (e) {
    var activeTab;
    var activeBodies;
    var targetBody;
    var targetTab     = getTarget(e.target);
    var className     = 'active';
    var classSelector = '.' + className;

    if (!targetTab) {
      return;
    }

    activeTab = targetTab.parentNode.querySelector(classSelector);

    if (activeTab) {
      activeTab.classList.remove(className);
    }

    targetTab.classList.add(className);

    if (!targetTab.hash) {
      return;
    }

    targetBody = document.querySelector(targetTab.hash);

    if (!targetBody) {
      return;
    }

    activeBodies = targetBody.parentNode.querySelectorAll(classSelector);

    for (var i = 0; i < activeBodies.length; i++) {
      activeBodies[i].classList.remove(className);
    }

    targetBody.classList.add(className);
  });

  window.addEventListener('click', function (e) {
    if (getTarget(e.target)) {
      e.preventDefault();
    }
  });

}());

/* ========================================================================
 * Ratchet: sliders.js v2.0.2
 * http://goratchet.com/components#sliders
 * ========================================================================
   Adapted from Brad Birdsall's swipe
 * Copyright 2015 Connor Sears
 * Licensed under MIT (https://github.com/twbs/ratchet/blob/master/LICENSE)
 * ======================================================================== */

!(function () {
  'use strict';

  var pageX;
  var pageY;
  var slider;
  var deltaX;
  var deltaY;
  var offsetX;
  var lastSlide;
  var startTime;
  var resistance;
  var sliderWidth;
  var slideNumber;
  var isScrolling;
  var scrollableArea;
  var startedMoving;

  var transformPrefix   = window.RATCHET.getBrowserCapabilities.prefix;
  var transformProperty = window.RATCHET.getBrowserCapabilities.transform;

  var getSlider = function (target) {
    var i;
    var sliders = document.querySelectorAll('.slider > .slide-group');

    for (; target && target !== document; target = target.parentNode) {
      for (i = sliders.length; i--;) {
        if (sliders[i] === target) {
          return target;
        }
      }
    }
  };

  var getScroll = function () {
    var translate3d = slider.style[transformProperty].match(/translate3d\(([^,]*)/);
    var ret = translate3d ? translate3d[1] : 0;
    return parseInt(ret, 10);
  };

  var setSlideNumber = function (offset) {
    var round = offset ? (deltaX < 0 ? 'ceil' : 'floor') : 'round';
    slideNumber = Math[round](getScroll() / (scrollableArea / slider.children.length));
    slideNumber += offset;
    slideNumber = Math.min(slideNumber, 0);
    slideNumber = Math.max(-(slider.children.length - 1), slideNumber);
  };

  var onTouchStart = function (e) {
    slider = getSlider(e.target);

    if (!slider) {
      return;
    }

    var firstItem  = slider.querySelector('.slide');

    scrollableArea = firstItem.offsetWidth * slider.children.length;
    isScrolling    = undefined;
    sliderWidth    = slider.offsetWidth;
    resistance     = 1;
    lastSlide      = -(slider.children.length - 1);
    startTime      = +new Date();
    pageX          = e.touches[0].pageX;
    pageY          = e.touches[0].pageY;
    deltaX         = 0;
    deltaY         = 0;

    setSlideNumber(0);

    slider.style[transformPrefix + 'transition-duration'] = 0;
  };

  var onTouchMove = function (e) {
    if (e.touches.length > 1 || !slider) {
      return; // Exit if a pinch || no slider
    }

    // adjust the starting position if we just started to avoid jumpage
    if (!startedMoving) {
      pageX += (e.touches[0].pageX - pageX) - 1;
    }

    deltaX = e.touches[0].pageX - pageX;
    deltaY = e.touches[0].pageY - pageY;
    pageX  = e.touches[0].pageX;
    pageY  = e.touches[0].pageY;

    if (typeof isScrolling === 'undefined' && startedMoving) {
      isScrolling = Math.abs(deltaY) > Math.abs(deltaX);
    }

    if (isScrolling) {
      return;
    }

    offsetX = (deltaX / resistance) + getScroll();

    e.preventDefault();

    resistance = slideNumber === 0         && deltaX > 0 ? (pageX / sliderWidth) + 1.25 :
                 slideNumber === lastSlide && deltaX < 0 ? (Math.abs(pageX) / sliderWidth) + 1.25 : 1;

    slider.style[transformProperty] = 'translate3d(' + offsetX + 'px,0,0)';

    // started moving
    startedMoving = true;
  };

  var onTouchEnd = function (e) {
    if (!slider || isScrolling) {
      return;
    }

    // we're done moving
    startedMoving = false;

    setSlideNumber((+new Date()) - startTime < 1000 && Math.abs(deltaX) > 15 ? (deltaX < 0 ? -1 : 1) : 0);

    offsetX = slideNumber * sliderWidth;

    slider.style[transformPrefix + 'transition-duration'] = '.2s';
    slider.style[transformProperty] = 'translate3d(' + offsetX + 'px,0,0)';

    e = new CustomEvent('slide', {
      detail: { slideNumber: Math.abs(slideNumber) },
      bubbles: true,
      cancelable: true
    });

    slider.parentNode.dispatchEvent(e);
  };

  window.addEventListener('touchstart', onTouchStart);
  window.addEventListener('touchmove', onTouchMove);
  window.addEventListener('touchend', onTouchEnd);

}());

/* ========================================================================
 * Ratchet: toggles.js v2.0.2
 * http://goratchet.com/components#toggles
 * ========================================================================
   Adapted from Brad Birdsall's swipe
 * Copyright 2015 Connor Sears
 * Licensed under MIT (https://github.com/twbs/ratchet/blob/master/LICENSE)
 * ======================================================================== */

!(function () {
  'use strict';

  var start     = {};
  var touchMove = false;
  var distanceX = false;
  var toggle    = false;
  var transformProperty = window.RATCHET.getBrowserCapabilities.transform;

  var findToggle = function (target) {
    var i;
    var toggles = document.querySelectorAll('.toggle');

    for (; target && target !== document; target = target.parentNode) {
      for (i = toggles.length; i--;) {
        if (toggles[i] === target) {
          return target;
        }
      }
    }
  };

  window.addEventListener('touchstart', function (e) {
    e = e.originalEvent || e;

    toggle = findToggle(e.target);

    if (!toggle) {
      return;
    }

    var handle      = toggle.querySelector('.toggle-handle');
    var toggleWidth = toggle.clientWidth;
    var handleWidth = handle.clientWidth;
    var offset      = toggle.classList.contains('active') ? (toggleWidth - handleWidth) : 0;

    start     = { pageX : e.touches[0].pageX - offset, pageY : e.touches[0].pageY };
    touchMove = false;
  });

  window.addEventListener('touchmove', function (e) {
    e = e.originalEvent || e;

    if (e.touches.length > 1) {
      return; // Exit if a pinch
    }

    if (!toggle) {
      return;
    }

    var handle      = toggle.querySelector('.toggle-handle');
    var current     = e.touches[0];
    var toggleWidth = toggle.clientWidth;
    var handleWidth = handle.clientWidth;
    var offset      = toggleWidth - handleWidth;

    touchMove = true;
    distanceX = current.pageX - start.pageX;

    if (Math.abs(distanceX) < Math.abs(current.pageY - start.pageY)) {
      return;
    }

    e.preventDefault();

    if (distanceX < 0) {
      return (handle.style[transformProperty] = 'translate3d(0,0,0)');
    }
    if (distanceX > offset) {
      return (handle.style[transformProperty] = 'translate3d(' + offset + 'px,0,0)');
    }

    handle.style[transformProperty] = 'translate3d(' + distanceX + 'px,0,0)';

    toggle.classList[(distanceX > (toggleWidth / 2 - handleWidth / 2)) ? 'add' : 'remove']('active');
  });

  window.addEventListener('touchend', function (e) {
    if (!toggle) {
      return;
    }

    var handle      = toggle.querySelector('.toggle-handle');
    var toggleWidth = toggle.clientWidth;
    var handleWidth = handle.clientWidth;
    var offset      = (toggleWidth - handleWidth);
    var slideOn     = (!touchMove && !toggle.classList.contains('active')) || (touchMove && (distanceX > (toggleWidth / 2 - handleWidth / 2)));

    if (slideOn) {
      handle.style[transformProperty] = 'translate3d(' + offset + 'px,0,0)';
    } else {
      handle.style[transformProperty] = 'translate3d(0,0,0)';
    }

    toggle.classList[slideOn ? 'add' : 'remove']('active');

    e = new CustomEvent('toggle', {
      detail: {
        isActive: slideOn
      },
      bubbles: true,
      cancelable: true
    });

    toggle.dispatchEvent(e);

    touchMove = false;
    toggle    = false;
  });

}());