/*
    * Vuescroll v4.16.1
    * (c) 2018-2020 Yi(Yves) Wang
    * Released under the MIT License
    * Github: https://github.com/YvesCoding/vuescroll
    * Website: http://vuescrolljs.yvescoding.org/
    */
   
(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('vue')) :
	typeof define === 'function' && define.amd ? define(['vue'], factory) :
	(global.vuescroll = factory(global.Vue));
}(this, (function (Vue) { 'use strict';

Vue = Vue && Vue.hasOwnProperty('default') ? Vue['default'] : Vue;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
  return typeof obj;
} : function (obj) {
  return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
};











var classCallCheck = function (instance, Constructor) {
  if (!(instance instanceof Constructor)) {
    throw new TypeError("Cannot call a class as a function");
  }
};

var createClass = function () {
  function defineProperties(target, props) {
    for (var i = 0; i < props.length; i++) {
      var descriptor = props[i];
      descriptor.enumerable = descriptor.enumerable || false;
      descriptor.configurable = true;
      if ("value" in descriptor) descriptor.writable = true;
      Object.defineProperty(target, descriptor.key, descriptor);
    }
  }

  return function (Constructor, protoProps, staticProps) {
    if (protoProps) defineProperties(Constructor.prototype, protoProps);
    if (staticProps) defineProperties(Constructor, staticProps);
    return Constructor;
  };
}();





var defineProperty = function (obj, key, value) {
  if (key in obj) {
    Object.defineProperty(obj, key, {
      value: value,
      enumerable: true,
      configurable: true,
      writable: true
    });
  } else {
    obj[key] = value;
  }

  return obj;
};

var _extends = Object.assign || function (target) {
  for (var i = 1; i < arguments.length; i++) {
    var source = arguments[i];

    for (var key in source) {
      if (Object.prototype.hasOwnProperty.call(source, key)) {
        target[key] = source[key];
      }
    }
  }

  return target;
};



































var toConsumableArray = function (arr) {
  if (Array.isArray(arr)) {
    for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];

    return arr2;
  } else {
    return Array.from(arr);
  }
};

function isIE() {
  /* istanbul ignore if */
  if (isServer()) return false;

  var agent = navigator.userAgent.toLowerCase();
  return agent.indexOf('msie') !== -1 || agent.indexOf('trident') !== -1 || agent.indexOf(' edge/') !== -1;
}

var isIos = function isIos() {
  /* istanbul ignore if */
  if (isServer()) return false;

  var u = navigator.userAgent;
  return !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/);
};

/* istanbul ignore next */
var isServer = function isServer() {
  return Vue.prototype.$isServer;
};

var touchManager = function () {
  function touchManager() {
    classCallCheck(this, touchManager);
  }

  createClass(touchManager, [{
    key: 'getEventObject',
    value: function getEventObject(originEvent) {
      return this.touchObject ? this.isTouch ? originEvent.touches : [originEvent] : null;
    }
  }, {
    key: 'getTouchObject',
    value: function getTouchObject() /* istanbul ignore next */{
      if (isServer()) return null;

      this.isTouch = false;
      var agent = navigator.userAgent,
          platform = navigator.platform,
          touchObject = {};
      touchObject.touch = !!('ontouchstart' in window && !window.opera || 'msmaxtouchpoints' in window.navigator || 'maxtouchpoints' in window.navigator || navigator.maxTouchPoints > 0 || navigator.msMaxTouchPoints > 0);
      touchObject.nonDeskTouch = touchObject.touch && !/win32/i.test(platform) || touchObject.touch && /win32/i.test(platform) && /mobile/i.test(agent);

      touchObject.eventType = 'onmousedown' in window && !touchObject.nonDeskTouch ? 'mouse' : 'ontouchstart' in window ? 'touch' : 'msmaxtouchpoints' in window.navigator || navigator.msMaxTouchPoints > 0 ? 'mstouchpoints' : 'maxtouchpoints' in window.navigator || navigator.maxTouchPoints > 0 ? 'touchpoints' : 'mouse';
      switch (touchObject.eventType) {
        case 'mouse':
          touchObject.touchstart = 'mousedown';
          touchObject.touchend = 'mouseup';
          touchObject.touchmove = 'mousemove';

          touchObject.touchenter = 'mouseenter';
          touchObject.touchmove = 'mousemove';
          touchObject.touchleave = 'mouseleave';
          break;
        case 'touch':
          touchObject.touchstart = 'touchstart';
          touchObject.touchend = 'touchend';
          touchObject.touchmove = 'touchmove';
          touchObject.touchcancel = 'touchcancel';

          touchObject.touchenter = 'touchstart';
          touchObject.touchmove = 'touchmove';
          touchObject.touchleave = 'touchend';
          this.isTouch = true;
          break;
        case 'mstouchpoints':
          touchObject.touchstart = 'MSPointerDown';
          touchObject.touchend = 'MSPointerUp';
          touchObject.touchmove = 'MSPointerMove';
          touchObject.touchcancel = 'MSPointerCancel';

          touchObject.touchenter = 'MSPointerDown';
          touchObject.touchmove = 'MSPointerMove';
          touchObject.touchleave = 'MSPointerUp';
          break;
        case 'touchpoints':
          touchObject.touchstart = 'pointerdown';
          touchObject.touchend = 'pointerup';
          touchObject.touchmove = 'pointermove';
          touchObject.touchcancel = 'pointercancel';

          touchObject.touchenter = 'pointerdown';
          touchObject.touchmove = 'pointermove';
          touchObject.touchleave = 'pointerup';
          break;
      }

      return this.touchObject = touchObject;
    }
  }]);
  return touchManager;
}();

function deepCopy(from, to, shallow) {
  if (shallow && isUndef(to)) {
    return from;
  }

  if (isArray(from)) {
    to = [];
    from.forEach(function (item, index) {
      to[index] = deepCopy(item, to[index]);
    });
  } else if (from) {
    if (!isPlainObj(from)) {
      return from;
    }
    to = {};
    for (var key in from) {
      to[key] = _typeof(from[key]) === 'object' ? deepCopy(from[key], to[key]) : from[key];
    }
  }
  return to;
}

function mergeObject(from, to, force, shallow) {
  if (shallow && isUndef(to)) {
    return from;
  }

  to = to || {};

  if (isArray(from)) {
    if (!isArray(to) && force) {
      to = [];
    }
    if (isArray(to)) {
      from.forEach(function (item, index) {
        to[index] = mergeObject(item, to[index], force, shallow);
      });
    }
  } else if (from) {
    if (!isPlainObj(from)) {
      if (force) {
        to = from;
      }
    } else {
      for (var key in from) {
        if (_typeof(from[key]) === 'object') {
          if (isUndef(to[key])) {
            to[key] = deepCopy(from[key], to[key], shallow);
          } else {
            mergeObject(from[key], to[key], force, shallow);
          }
        } else {
          if (isUndef(to[key]) || force) to[key] = from[key];
        }
      }
    }
  }

  return to;
}

function defineReactive(target, key, source, souceKey) {
  /* istanbul ignore if */
  if (!source[key] && typeof source !== 'function') {
    return;
  }
  souceKey = souceKey || key;
  Object.defineProperty(target, key, {
    get: function get$$1() {
      return source[souceKey];
    },

    configurable: true
  });
}

var scrollBarWidth = void 0;
function getGutter() {
  /* istanbul ignore next */
  if (isServer()) return 0;
  if (scrollBarWidth !== undefined) return scrollBarWidth;
  var outer = document.createElement('div');
  outer.style.visibility = 'hidden';
  outer.style.width = '100px';
  outer.style.position = 'absolute';
  outer.style.top = '-9999px';
  document.body.appendChild(outer);

  var widthNoScroll = outer.offsetWidth;
  outer.style.overflow = 'scroll';

  var inner = document.createElement('div');
  inner.style.width = '100%';
  outer.appendChild(inner);

  var widthWithScroll = inner.offsetWidth;
  outer.parentNode.removeChild(outer);
  scrollBarWidth = widthNoScroll - widthWithScroll;

  return scrollBarWidth;
}

function eventCenter(dom, eventName, hander) {
  var capture = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;
  var type = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 'on';

  type == 'on' ? dom.addEventListener(eventName, hander, capture) : dom.removeEventListener(eventName, hander, capture);
}


var warn = function warn(msg) {
  console.warn('[vuescroll] ' + msg);
};

function isChildInParent(child, parent) {
  var flag = false;
  if (!child || !parent) {
    return flag;
  }
  while (child.parentNode !== parent && child.parentNode.nodeType !== 9 && !child.parentNode._isVuescroll) {
    child = child.parentNode;
  }
  if (child.parentNode == parent) {
    flag = true;
  }
  return flag;
}

function getPrefix(global) {
  var docStyle = document.documentElement.style;
  var engine;
  /* istanbul ignore if */
  if (global.opera && Object.prototype.toString.call(opera) === '[object Opera]') {
    engine = 'presto';
  } /* istanbul ignore next */else if ('MozAppearance' in docStyle) {
      engine = 'gecko';
    } else if ('WebkitAppearance' in docStyle) {
      engine = 'webkit';
    } /* istanbul ignore next */else if (typeof navigator.cpuClass === 'string') {
        engine = 'trident';
      }
  var vendorPrefix = {
    trident: 'ms',
    gecko: 'moz',
    webkit: 'webkit',
    presto: 'O'
  }[engine];
  return vendorPrefix;
}

function getComplitableStyle(property, value) {
  /* istanbul ignore if */
  if (isServer()) return false;

  var compatibleValue = '-' + getPrefix(window) + '-' + value;
  var testElm = document.createElement('div');
  testElm.style[property] = compatibleValue;
  if (testElm.style[property] == compatibleValue) {
    return compatibleValue;
  }
  /* istanbul ignore next */
  return false;
}

/**
 * Insert children into user-passed slot at vnode level
 */
function insertChildrenIntoSlot(h) {
  var parentVnode = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
  var childVNode = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];
  var data = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};
  var swapChildren = arguments[4];

  /* istanbul ignore if */
  if (parentVnode && parentVnode.length > 1) {
    return swapChildren ? [].concat(toConsumableArray(childVNode), toConsumableArray(parentVnode)) : [].concat(toConsumableArray(parentVnode), toConsumableArray(childVNode));
  }

  parentVnode = parentVnode[0];

  var _getVnodeInfo = getVnodeInfo(parentVnode),
      ch = _getVnodeInfo.ch,
      tag = _getVnodeInfo.tag,
      isComponent = _getVnodeInfo.isComponent;

  if (isComponent) {
    parentVnode.data = mergeObject({ attrs: parentVnode.componentOptions.propsData }, parentVnode.data, false, // force: false
    true // shallow: true
    );
  }
  ch = swapChildren ? [].concat(toConsumableArray(childVNode), toConsumableArray(ch)) : [].concat(toConsumableArray(ch), toConsumableArray(childVNode));
  delete parentVnode.data.slot;

  return h(tag, mergeObject(data, parentVnode.data, false, true), ch);
}

/**
 *  Get the info of a vnode,
 * vnode must be parentVnode
 */
function getVnodeInfo(vnode) {
  if (!vnode || vnode.length > 1) return {};

  vnode = vnode[0] ? vnode[0] : vnode;
  var isComponent = !!vnode.componentOptions;
  var ch = void 0;
  var tag = void 0;

  if (isComponent) {
    ch = vnode.componentOptions.children || [];
    tag = vnode.componentOptions.tag;
  } else {
    ch = vnode.children || [];
    tag = vnode.tag;
  }

  return {
    isComponent: isComponent,
    ch: ch,
    tag: tag
  };
}

/**
 * Get the vuescroll instance instead of
 * user pass component like slot.
 */
function getRealParent(ctx) {
  var parent = ctx.$parent;
  if (!parent._isVuescrollRoot && parent) {
    parent = parent.$parent;
  }
  return parent;
}

var isArray = function isArray(_) {
  return Array.isArray(_);
};
var isPlainObj = function isPlainObj(_) {
  return Object.prototype.toString.call(_) == '[object Object]';
};
var isUndef = function isUndef(_) {
  return typeof _ === 'undefined';
};

function getNumericValue(distance, size) {
  var number = void 0;
  if (!(number = /(-?\d+(?:\.\d+?)?)%$/.exec(distance))) {
    number = distance - 0;
  } else {
    number = number[1] - 0;
    number = size * number / 100;
  }
  return number;
}

function createStyle(styleId, cssText) {
  /* istanbul ignore if */
  if (isServer() || document.getElementById(styleId)) {
    return;
  }

  var head = document.head || doc.getElementsByTagName('head')[0];
  var style = document.createElement('style');

  style.id = styleId;
  style.type = 'text/css';

  /* istanbul ignore if */
  if (style.styleSheet) {
    style.styleSheet.cssText = cssText;
  } else {
    style.appendChild(document.createTextNode(cssText));
  }

  head.appendChild(style);
}

// Hide the ios native scrollbar.
function createHideBarStyle() {
  /* istanbul ignore next */
  {
    var cssText = '.__hidebar::-webkit-scrollbar {\n      width: 0;\n      height: 0;\n    }';

    createStyle('vuescroll-hide-ios-bar', cssText);
  }
}

// create slide mode style

var api = {
  mounted: function mounted() {
    vsInstances[this._uid] = this;
  },
  beforeDestroy: function beforeDestroy() {
    delete vsInstances[this._uid];
  },

  methods: {
    // public api
    scrollTo: function scrollTo(_ref, speed, easing) {
      var x = _ref.x,
          y = _ref.y;

      // istanbul ignore if
      if (speed === true || typeof speed == 'undefined') {
        speed = this.mergedOptions.scrollPanel.speed;
      }
      this.internalScrollTo(x, y, speed, easing);
    },
    scrollBy: function scrollBy(_ref2, speed, easing) {
      var _ref2$dx = _ref2.dx,
          dx = _ref2$dx === undefined ? 0 : _ref2$dx,
          _ref2$dy = _ref2.dy,
          dy = _ref2$dy === undefined ? 0 : _ref2$dy;

      var _getPosition = this.getPosition(),
          _getPosition$scrollLe = _getPosition.scrollLeft,
          scrollLeft = _getPosition$scrollLe === undefined ? 0 : _getPosition$scrollLe,
          _getPosition$scrollTo = _getPosition.scrollTop,
          scrollTop = _getPosition$scrollTo === undefined ? 0 : _getPosition$scrollTo;

      if (dx) {
        scrollLeft += getNumericValue(dx, this.scrollPanelElm.scrollWidth - this.$el.clientWidth);
      }
      if (dy) {
        scrollTop += getNumericValue(dy, this.scrollPanelElm.scrollHeight - this.$el.clientHeight);
      }
      this.internalScrollTo(scrollLeft, scrollTop, speed, easing);
    },
    scrollIntoView: function scrollIntoView(elm) {
      var animate = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;

      var parentElm = this.$el;

      if (typeof elm === 'string') {
        elm = parentElm.querySelector(elm);
      }

      if (!isChildInParent(elm, parentElm)) {
        warn('The element or selector you passed is not the element of Vuescroll, please pass the element that is in Vuescroll to scrollIntoView API. ');
        return;
      }

      // parent elm left, top

      var _$el$getBoundingClien = this.$el.getBoundingClientRect(),
          left = _$el$getBoundingClien.left,
          top = _$el$getBoundingClien.top;
      // child elm left, top


      var _elm$getBoundingClien = elm.getBoundingClientRect(),
          childLeft = _elm$getBoundingClien.left,
          childTop = _elm$getBoundingClien.top;

      var diffX = left - childLeft;
      var diffY = top - childTop;

      this.scrollBy({
        dx: -diffX,
        dy: -diffY
      }, animate);
    },
    refresh: function refresh() {
      this.refreshInternalStatus();
      // refresh again to keep status is correct
      this.$nextTick(this.refreshInternalStatus);
    }
  }
};

/** Public Api */

/**
 * Refresh all
 */
var vsInstances = {};
function refreshAll() {
  for (var vs in vsInstances) {
    vsInstances[vs].refresh();
  }
}

var baseConfig = {
  // vuescroll
  vuescroll: {
    // vuescroll's size(height/width) should be a percent(100%)
    // or be a number that is equal to its parentNode's width or
    // height ?
    sizeStrategy: 'percent',
    /** Whether to detect dom resize or not */
    detectResize: true
  },
  scrollPanel: {
    // when component mounted.. it will automatically scrolls.
    initialScrollY: false,
    initialScrollX: false,
    // feat: #11
    scrollingX: true,
    scrollingY: true,
    speed: 300,
    easing: undefined,
    // Sometimes, the nativebar maybe on the left,
    // See https://github.com/YvesCoding/vuescroll/issues/64
    verticalNativeBarPos: 'right',
    maxHeight: undefined,
    maxWidth: undefined
  },

  //
  rail: {
    background: '#01a99a',
    opacity: 0,
    border: 'none',
    /** Rail's size(Height/Width) , default -> 6px */
    size: '6px',
    /** Specify rail's border-radius, or the border-radius of rail and bar will be equal to the rail's size. default -> false **/
    specifyBorderRadius: false,
    /** Rail the distance from the two ends of the X axis and Y axis. **/
    gutterOfEnds: null,
    /** Rail the distance from the side of container. **/
    gutterOfSide: '2px',
    /** Whether to keep rail show or not, default -> false, event content height is not enough */
    keepShow: false
  },
  bar: {
    /** How long to hide bar after mouseleave, default -> 500 */
    showDelay: 500,
    /** Specify bar's border-radius, or the border-radius of rail and bar will be equal to the rail's size. default -> false **/
    specifyBorderRadius: false,
    /** Whether to show bar on scrolling, default -> true */
    onlyShowBarOnScroll: true,
    /** Whether to keep show or not, default -> false */
    keepShow: false,
    /** Bar's background , default -> #00a650 */
    background: 'rgb(3, 185, 118)',
    /** Bar's opacity, default -> 1  */
    opacity: 1,
    /** bar's size(Height/Width) , default -> 6px */

    size: '6px',
    minSize: 0,
    disable: false
  },
  scrollButton: {
    enable: false,
    background: 'rgb(3, 185, 118)',
    opacity: 1,
    step: 180,
    mousedownStep: 30
  }
};
/**
 * validate the options
 * @export
 * @param {any} ops
 */
function validateOps(ops) {
  var renderError = false;
  var scrollPanel = ops.scrollPanel;
  var _ops$bar = ops.bar,
      vBar = _ops$bar.vBar,
      hBar = _ops$bar.hBar;
  var _ops$rail = ops.rail,
      vRail = _ops$rail.vRail,
      hRail = _ops$rail.hRail;

  // validate scrollPanel

  var initialScrollY = scrollPanel['initialScrollY'];
  var initialScrollX = scrollPanel['initialScrollX'];

  if (initialScrollY && !String(initialScrollY).match(/^\d+(\.\d+)?(%)?$/)) {
    warn('The prop `initialScrollY` or `initialScrollX` should be a percent number like `10%` or an exact number that greater than or equal to 0 like `100`.');
  }
  if (initialScrollX && !String(initialScrollX).match(/^\d+(\.\d+)?(%)?$/)) {
    warn('The prop `initialScrollY` or `initialScrollX` should be a percent number like `10%` or an exact number that greater than or equal to 0 like `100`.');
  }

  // validate deprecated vBar/hBar vRail/hRail
  if (vBar || hBar || vRail || hRail) {
    warn('The options: vRail, hRail, vBar, hBar have been deprecated since v4.7.0,' + 'please use corresponing rail/bar instead!');
  }

  if (_extraValidate) {
    _extraValidate = [].concat(_extraValidate);
    _extraValidate.forEach(function (hasError) {
      if (hasError(ops)) {
        renderError = true;
      }
    });
  }
  return renderError;
}

var _extraValidate = null;
var extendOpts = function extendOpts(extraOpts, extraValidate) {
  extraOpts = [].concat(extraOpts);
  extraOpts.forEach(function (opts) {
    mergeObject(opts, baseConfig);
  });

  _extraValidate = extraValidate;
};

// all modes

// do nothing

// some small changes.
var smallChangeArray = ['mergedOptions.vuescroll.pullRefresh.tips', 'mergedOptions.vuescroll.pushLoad.tips', 'mergedOptions.vuescroll.scroller.disable', 'mergedOptions.rail', 'mergedOptions.bar'];
// refresh/load dom ref/key...

var scrollMap = {
  vertical: {
    size: 'height',
    opsSize: 'width',
    posName: 'top',
    opposName: 'bottom',
    sidePosName: 'right',
    page: 'pageY',
    scroll: 'scrollTop',
    scrollSize: 'scrollHeight',
    offset: 'offsetHeight',
    client: 'clientY',
    axis: 'Y',
    scrollButton: {
      start: 'top',
      end: 'bottom'
    }
  },
  horizontal: {
    size: 'width',
    opsSize: 'height',
    posName: 'left',
    opposName: 'right',
    sidePosName: 'bottom',
    page: 'pageX',
    scroll: 'scrollLeft',
    scrollSize: 'scrollWidth',
    offset: 'offsetWidth',
    client: 'clientX',
    axis: 'X',
    scrollButton: {
      start: 'left',
      end: 'right'
    }
  }
};

function requestAnimationFrame(global) {
  // Check for request animation Frame support
  var requestFrame = global.requestAnimationFrame || global.webkitRequestAnimationFrame || global.mozRequestAnimationFrame || global.oRequestAnimationFrame;
  var isNative = !!requestFrame;

  if (requestFrame && !/requestAnimationFrame\(\)\s*\{\s*\[native code\]\s*\}/i.test(requestFrame.toString())) {
    isNative = false;
  }

  if (isNative) {
    return function (callback, root) {
      requestFrame(callback, root);
    };
  }

  var TARGET_FPS = 60;
  var requests = {};
  var rafHandle = 1;
  var intervalHandle = null;
  var lastActive = +new Date();

  return function (callback) {
    var callbackHandle = rafHandle++;

    // Store callback
    requests[callbackHandle] = callback;

    // Create timeout at first request
    if (intervalHandle === null) {
      intervalHandle = setInterval(function () {
        var time = +new Date();
        var currentRequests = requests;

        // Reset data structure before executing callbacks
        requests = {};

        for (var key in currentRequests) {
          if (currentRequests.hasOwnProperty(key)) {
            currentRequests[key](time);
            lastActive = time;
          }
        }

        // Disable the timeout when nothing happens for a certain
        // period of time
        if (time - lastActive > 2500) {
          clearInterval(intervalHandle);
          intervalHandle = null;
        }
      }, 1000 / TARGET_FPS);
    }

    return callbackHandle;
  };
}

var colorCache = {};
var rgbReg = /rgb\(/;
var extractRgbColor = /rgb\((.*)\)/;

// Transform a common color int oa `rgbA` color
function getRgbAColor(color, opacity) {
  var id = color + '&' + opacity;
  if (colorCache[id]) {
    return colorCache[id];
  }

  var div = document.createElement('div');
  div.style.background = color;
  document.body.appendChild(div);
  var computedColor = window.getComputedStyle(div).backgroundColor;
  document.body.removeChild(div);

  /* istanbul ignore if */
  if (!rgbReg.test(computedColor)) {
    return color;
  }

  return colorCache[id] = 'rgba(' + extractRgbColor.exec(computedColor)[1] + ', ' + opacity + ')';
}

var bar = {
  name: 'bar',
  props: {
    ops: Object,
    state: Object,
    hideBar: Boolean,
    otherBarHide: Boolean,
    type: String
  },
  computed: {
    bar: function bar() {
      return scrollMap[this.type];
    },
    barSize: function barSize() {
      return Math.max(this.state.size, this.ops.bar.minSize);
    },
    barRatio: function barRatio() {
      return (1 - this.barSize) / (1 - this.state.size);
    }
  },
  render: function render(h) {
    var _style, _style2, _barStyle;

    var vm = this;
    /** Get rgbA format background color */
    var railBackgroundColor = getRgbAColor(vm.ops.rail.background, vm.ops.rail.opacity);

    if (!this.touchManager) {
      this.touchManager = new touchManager();
    }

    /** Rail Data */
    var railSize = vm.ops.rail.size;
    var endPos = vm.otherBarHide ? 0 : railSize;
    var touchObj = vm.touchManager.getTouchObject();
    var rail = {
      class: '__rail-is-' + vm.type,
      style: (_style = {
        position: 'absolute',
        'z-index': '1',

        borderRadius: vm.ops.rail.specifyBorderRadius || railSize,
        background: railBackgroundColor,
        border: vm.ops.rail.border
      }, defineProperty(_style, vm.bar.opsSize, railSize), defineProperty(_style, vm.bar.posName, vm.ops.rail['gutterOfEnds'] || 0), defineProperty(_style, vm.bar.opposName, vm.ops.rail['gutterOfEnds'] || endPos), defineProperty(_style, vm.bar.sidePosName, vm.ops.rail['gutterOfSide']), _style)
    };

    if (touchObj) {
      var _rail$on;

      rail.on = (_rail$on = {}, defineProperty(_rail$on, touchObj.touchenter, function () {
        vm.setRailHover();
      }), defineProperty(_rail$on, touchObj.touchleave, function () {
        vm.setRailLeave();
      }), _rail$on);
    }

    // left space for scroll button
    var buttonSize = vm.ops.scrollButton.enable ? railSize : 0;
    var barWrapper = {
      class: '__bar-wrap-is-' + vm.type,
      style: (_style2 = {
        position: 'absolute',
        borderRadius: vm.ops.rail.specifyBorderRadius || railSize
      }, defineProperty(_style2, vm.bar.posName, buttonSize), defineProperty(_style2, vm.bar.opposName, buttonSize), _style2),
      on: {}
    };

    var scrollDistance = vm.state.posValue * vm.state.size;
    var pos = scrollDistance * vm.barRatio / vm.barSize;
    var opacity = vm.state.opacity;
    var parent = getRealParent(this);

    // set class hook
    parent.setClassHook(this.type == 'vertical' ? 'vBarVisible' : 'hBarVisible', !!opacity);

    /** Scrollbar style */
    var barStyle = (_barStyle = {
      cursor: 'pointer',
      position: 'absolute',
      margin: 'auto',
      transition: 'opacity 0.5s',
      'user-select': 'none',
      'border-radius': 'inherit'

    }, defineProperty(_barStyle, vm.bar.size, vm.barSize * 100 + '%'), defineProperty(_barStyle, 'background', vm.ops.bar.background), defineProperty(_barStyle, vm.bar.opsSize, vm.ops.bar.size), defineProperty(_barStyle, 'opacity', opacity), defineProperty(_barStyle, 'transform', 'translate' + scrollMap[vm.type].axis + '(' + pos + '%)'), _barStyle);
    var bar = {
      style: barStyle,
      class: '__bar-is-' + vm.type,
      ref: 'thumb',
      on: {}
    };

    if (vm.type == 'vertical') {
      barWrapper.style.width = '100%';
      // Let bar to be on the center.
      bar.style.left = 0;
      bar.style.right = 0;
    } else {
      barWrapper.style.height = '100%';
      bar.style.top = 0;
      bar.style.bottom = 0;
    }

    /* istanbul ignore next */
    {
      var _touchObj = this.touchManager.getTouchObject();
      bar.on[_touchObj.touchstart] = this.createBarEvent();
      barWrapper.on[_touchObj.touchstart] = this.createTrackEvent();
    }

    return h(
      'div',
      rail,
      [this.createScrollbarButton(h, 'start'), this.hideBar ? null : h(
        'div',
        barWrapper,
        [h('div', bar)]
      ), this.createScrollbarButton(h, 'end')]
    );
  },
  data: function data() {
    return {
      isBarDragging: false
    };
  },

  methods: {
    setRailHover: function setRailHover() {
      var parent = getRealParent(this);
      var state = parent.vuescroll.state;

      if (!state.isRailHover) {
        state.isRailHover = true;
        parent.showBar();
      }
    },
    setRailLeave: function setRailLeave() {
      var parent = getRealParent(this);
      var state = parent.vuescroll.state;

      state.isRailHover = false;
      parent.hideBar();
    },
    setBarDrag: function setBarDrag(val) /* istanbul ignore next */{
      this.$emit('setBarDrag', this.isBarDragging = val);

      var parent = getRealParent(this);
      // set class hook
      parent.setClassHook(this.type == 'vertical' ? 'vBarDragging' : 'hBarDragging', !!val);
    },
    createBarEvent: function createBarEvent() {
      var ctx = this;

      var parent = getRealParent(ctx);
      var touchObj = ctx.touchManager.getTouchObject();

      function mousedown(e) /* istanbul ignore next */{
        var event = ctx.touchManager.getEventObject(e);
        if (!event) return;

        e.stopImmediatePropagation();
        e.preventDefault();
        event = event[0];

        document.onselectstart = function () {
          return false;
        };
        ctx.axisStartPos = event[ctx.bar.client] - ctx.$refs['thumb'].getBoundingClientRect()[ctx.bar.posName];

        // Tell parent that the mouse has been down.
        ctx.setBarDrag(true);
        eventCenter(document, touchObj.touchmove, mousemove);
        eventCenter(document, touchObj.touchend, mouseup);
      }

      function mousemove(e) /* istanbul ignore next */{
        if (!ctx.axisStartPos) {
          return;
        }

        var event = ctx.touchManager.getEventObject(e);
        if (!event) return;

        event = event[0];

        var thubmParent = ctx.$refs.thumb.parentNode;

        var delta = event[ctx.bar.client] - thubmParent.getBoundingClientRect()[ctx.bar.posName];
        delta = delta / ctx.barRatio;

        var percent = (delta - ctx.axisStartPos) / thubmParent[ctx.bar.offset];
        parent.scrollTo(defineProperty({}, ctx.bar.axis.toLowerCase(), parent.scrollPanelElm[ctx.bar.scrollSize] * percent), false);
      }

      function mouseup() /* istanbul ignore next */{
        ctx.setBarDrag(false);
        parent.hideBar();

        document.onselectstart = null;
        ctx.axisStartPos = 0;

        eventCenter(document, touchObj.touchmove, mousemove, false, 'off');
        eventCenter(document, touchObj.touchend, mouseup, false, 'off');
      }

      return mousedown;
    },
    createTrackEvent: function createTrackEvent() {
      var ctx = this;

      return function handleClickTrack(e) {
        var parent = getRealParent(ctx);

        var _ctx$bar = ctx.bar,
            client = _ctx$bar.client,
            offset = _ctx$bar.offset,
            posName = _ctx$bar.posName,
            axis = _ctx$bar.axis;

        var thumb = ctx.$refs['thumb'];

        e.preventDefault();
        e.stopImmediatePropagation();

        /* istanbul ignore if */
        if (!thumb) return;

        var barOffset = thumb[offset];
        var event = ctx.touchManager.getEventObject(e)[0];

        var percent = (event[client] - e.currentTarget.getBoundingClientRect()[posName] - barOffset / 2) / (e.currentTarget[offset] - barOffset);

        parent.scrollTo(defineProperty({}, axis.toLowerCase(), percent * 100 + '%'));
      };
    },


    // Scrollbuton relative things...
    createScrollbarButton: function createScrollbarButton(h, type /* start or end  */) {
      var _style3;

      var barContext = this;

      if (!barContext.ops.scrollButton.enable) {
        return null;
      }

      var size = barContext.ops.rail.size;
      var _barContext$ops$scrol = barContext.ops.scrollButton,
          opacity = _barContext$ops$scrol.opacity,
          background = _barContext$ops$scrol.background;

      var borderColor = getRgbAColor(background, opacity);

      var wrapperProps = {
        class: ['__bar-button', '__bar-button-is-' + barContext.type + '-' + type],
        style: (_style3 = {}, defineProperty(_style3, barContext.bar.scrollButton[type], 0), defineProperty(_style3, 'width', size), defineProperty(_style3, 'height', size), defineProperty(_style3, 'position', 'absolute'), defineProperty(_style3, 'cursor', 'pointer'), defineProperty(_style3, 'display', 'table'), _style3),
        ref: type
      };

      var innerProps = {
        class: '__bar-button-inner',
        style: {
          border: 'calc(' + size + ' / 2.5) solid transparent',
          width: '0',
          height: '0',
          margin: 'auto',
          position: 'absolute',
          top: '0',
          bottom: '0',
          right: '0',
          left: '0'
        },
        on: {}
      };

      if (barContext.type == 'vertical') {
        if (type == 'start') {
          innerProps.style['border-bottom-color'] = borderColor;
          innerProps.style['transform'] = 'translateY(-25%)';
        } else {
          innerProps.style['border-top-color'] = borderColor;
          innerProps.style['transform'] = 'translateY(25%)';
        }
      } else {
        if (type == 'start') {
          innerProps.style['border-right-color'] = borderColor;
          innerProps.style['transform'] = 'translateX(-25%)';
        } else {
          innerProps.style['border-left-color'] = borderColor;
          innerProps.style['transform'] = 'translateX(25%)';
        }
      }

      /* istanbul ignore next */
      {
        var touchObj = this.touchManager.getTouchObject();
        innerProps.on[touchObj.touchstart] = this.createScrollButtonEvent(type, touchObj);
      }

      return h(
        'div',
        wrapperProps,
        [h('div', innerProps)]
      );
    },
    createScrollButtonEvent: function createScrollButtonEvent(type, touchObj) {
      var ctx = this;
      var parent = getRealParent(ctx);

      var _ctx$ops$scrollButton = ctx.ops.scrollButton,
          step = _ctx$ops$scrollButton.step,
          mousedownStep = _ctx$ops$scrollButton.mousedownStep;


      var stepWithDirection = type == 'start' ? -step : step;
      var mousedownStepWithDirection = type == 'start' ? -mousedownStep : mousedownStep;
      var ref = requestAnimationFrame(window);

      // bar props: type
      var barType = ctx.type;

      var isMouseDown = false;
      var isMouseout = true;
      var timeoutId = void 0;

      function start(e) {
        /* istanbul ignore if */

        if (3 == e.which) {
          return;
        }

        // set class hook
        parent.setClassHook('cliking' + barType + type + 'Button', true);

        e.stopImmediatePropagation();
        e.preventDefault();

        isMouseout = false;

        parent.scrollBy(defineProperty({}, 'd' + ctx.bar.axis.toLowerCase(), stepWithDirection));

        eventCenter(document, touchObj.touchend, endPress, false);

        if (touchObj.touchstart == 'mousedown') {
          var elm = ctx.$refs[type];
          eventCenter(elm, 'mouseenter', enter, false);
          eventCenter(elm, 'mouseleave', leave, false);
        }

        clearTimeout(timeoutId);
        timeoutId = setTimeout(function () /* istanbul ignore next */{
          isMouseDown = true;
          ref(pressing, window);
        }, 500);
      }

      function pressing() /* istanbul ignore next */{
        if (isMouseDown && !isMouseout) {
          parent.scrollBy(defineProperty({}, 'd' + ctx.bar.axis.toLowerCase(), mousedownStepWithDirection), false);
          ref(pressing, window);
        }
      }

      function endPress() {
        clearTimeout(timeoutId);
        isMouseDown = false;
        eventCenter(document, touchObj.touchend, endPress, false, 'off');

        if (touchObj.touchstart == 'mousedown') {
          var elm = ctx.$refs[type];
          eventCenter(elm, 'mouseenter', enter, false, 'off');
          eventCenter(elm, 'mouseleave', leave, false, 'off');
        }

        parent.setClassHook('cliking' + barType + type + 'Button', false);
      }

      function enter() /* istanbul ignore next */{
        isMouseout = false;
        pressing();
      }

      function leave() /* istanbul ignore next */{
        isMouseout = true;
      }

      return start;
    }
  }
};

function getBarData(vm, type) {
  var axis = scrollMap[type].axis;
  /** type.charAt(0) = vBar/hBar */
  var barType = type.charAt(0) + 'Bar';

  var hideBar = !vm.bar[barType].state.size || !vm.mergedOptions.scrollPanel['scrolling' + axis] || vm.refreshLoad && type !== 'vertical' || vm.mergedOptions.bar.disable;

  var keepShowRail = vm.mergedOptions.rail.keepShow;

  if (hideBar && !keepShowRail) {
    return null;
  }

  return {
    hideBar: hideBar,
    props: {
      type: type,
      ops: {
        bar: vm.mergedOptions.bar,
        rail: vm.mergedOptions.rail,
        scrollButton: vm.mergedOptions.scrollButton
      },
      state: vm.bar[barType].state,
      hideBar: hideBar
    },
    on: {
      setBarDrag: vm.setBarDrag
    },
    ref: type + 'Bar',
    key: type
  };
}

/**
 * create bars
 *
 * @param {any} size
 * @param {any} type
 */
function createBar(h, vm) {
  var verticalBarProps = getBarData(vm, 'vertical');
  var horizontalBarProps = getBarData(vm, 'horizontal');

  // set class hooks
  vm.setClassHook('hasVBar', !!(verticalBarProps && !verticalBarProps.hideBar));
  vm.setClassHook('hasHBar', !!(horizontalBarProps && !horizontalBarProps.hideBar));

  return [verticalBarProps ? h('bar', _extends({}, verticalBarProps, {
    props: _extends({ otherBarHide: !horizontalBarProps }, verticalBarProps.props)
  })) : null, horizontalBarProps ? h('bar', _extends({}, horizontalBarProps, {
    props: _extends({ otherBarHide: !verticalBarProps }, horizontalBarProps.props)
  })) : null];
}

/**
 * This is like a HOC, It extracts the common parts of the
 * native-mode, slide-mode and mix-mode.
 * Each mode must implement the following methods:
 * 1. refreshInternalStatus : use to refresh the component
 * 2. destroy : Destroy some registryed events before component destroy.
 * 3. updateBarStateAndEmitEvent: use to update bar states and emit events.
 */

var createComponent = function createComponent(_ref) {
  var _render = _ref.render,
      components = _ref.components,
      mixins = _ref.mixins;
  return {
    name: 'vueScroll',
    props: {
      ops: { type: Object }
    },
    components: components,
    mixins: [api].concat(toConsumableArray([].concat(mixins))),
    created: function created() {
      var _this = this;

      /**
       * Begin to merge options
       */

      var _gfc = mergeObject(this.$vuescrollConfig || {}, {});
      var ops = mergeObject(baseConfig, _gfc);

      this.$options.propsData.ops = this.$options.propsData.ops || {};
      Object.keys(this.$options.propsData.ops).forEach(function (key) {
        {
          defineReactive(_this.mergedOptions, key, _this.$options.propsData.ops);
        }
      });
      // from ops to mergedOptions
      mergeObject(ops, this.mergedOptions);

      this._isVuescrollRoot = true;
      this.renderError = validateOps(this.mergedOptions);
    },
    render: function render(h) {
      var vm = this;
      if (vm.renderError) {
        return h('div', [[vm.$slots['default']]]);
      }

      if (!vm.touchManager) vm.touchManager = new touchManager();

      // vuescroll data
      var data = {
        style: {
          height: vm.vuescroll.state.height,
          width: vm.vuescroll.state.width,
          padding: 0,
          position: 'relative',
          overflow: 'hidden'
        },
        class: _extends({ __vuescroll: true }, vm.classHooks)
      };

      var touchObj = vm.touchManager.getTouchObject();
      if (touchObj) {
        var _data$on;

        data.on = (_data$on = {}, defineProperty(_data$on, touchObj.touchenter, function () {
          vm.vuescroll.state.pointerLeave = false;
          vm.updateBarStateAndEmitEvent();

          vm.setClassHook('mouseEnter', true);
        }), defineProperty(_data$on, touchObj.touchleave, function () {
          vm.vuescroll.state.pointerLeave = true;
          vm.hideBar();

          vm.setClassHook('mouseEnter', false);
        }), defineProperty(_data$on, touchObj.touchmove, function () /* istanbul ignore next */{
          vm.vuescroll.state.pointerLeave = false;
          vm.updateBarStateAndEmitEvent();
        }), _data$on);
      }

      var ch = [_render(h, vm)].concat(toConsumableArray(createBar(h, vm)));

      var _customContainer = this.$slots['scroll-container'];
      if (_customContainer) {
        return insertChildrenIntoSlot(h, _customContainer, ch, data);
      }

      return h(
        'div',
        data,
        [ch]
      );
    },
    mounted: function mounted() {
      var _this2 = this;

      if (!this.renderError) {
        this.initVariables();
        this.initWatchOpsChange();
        // Call external merged Api
        this.refreshInternalStatus();

        this.updatedCbs.push(function () {
          _this2.scrollToAnchor();
          // need to reflow to deal with the
          // latest thing.
          _this2.updateBarStateAndEmitEvent();
        });
      }
    },
    updated: function updated() {
      var _this3 = this;

      this.updatedCbs.forEach(function (cb) {
        cb.call(_this3);
      });
      // Clear
      this.updatedCbs = [];
    },
    beforeDestroy: function beforeDestroy() {
      if (this.destroy) {
        this.destroy();
      }
    },


    /** ------------------------------- Computed ----------------------------- */
    computed: {
      scrollPanelElm: function scrollPanelElm() {
        return this.$refs['scrollPanel']._isVue ? this.$refs['scrollPanel'].$el : this.$refs['scrollPanel'];
      }
    },
    data: function data() {
      return {
        vuescroll: {
          state: {
            isDragging: false,
            pointerLeave: true,
            isRailHover: false,
            /** Default sizeStrategies */
            height: '100%',
            width: '100%',
            // current size strategy
            currentSizeStrategy: 'percent',
            currentScrollState: null,
            currentScrollInfo: null
          }
        },
        bar: {
          vBar: {
            state: {
              posValue: 0,
              size: 0,
              opacity: 0
            }
          },
          hBar: {
            state: {
              posValue: 0,
              size: 0,
              opacity: 0
            }
          }
        },
        mergedOptions: {
          vuescroll: {},
          scrollPanel: {},
          scrollContent: {},
          rail: {},
          bar: {}
        },
        updatedCbs: [],
        renderError: false,

        classHooks: {
          hasVBar: false,
          hasHBar: false,

          vBarVisible: false,
          hBarVisible: false,

          vBarDragging: false,
          hBarDragging: false,

          clikingVerticalStartButton: false,
          clikingVerticalEndButton: false,
          clikingHorizontalStartButton: false,
          clikingHorizontalEndButton: false,

          mouseEnter: false
        }
      };
    },

    /** ------------------------------- Methods -------------------------------- */
    methods: {
      /** ------------------------ Handlers --------------------------- */

      scrollingComplete: function scrollingComplete() {
        this.updateBarStateAndEmitEvent('handle-scroll-complete');
      },
      setBarDrag: function setBarDrag(val) {
        /* istanbul ignore next */
        this.vuescroll.state.isDragging = val;
      },
      setClassHook: function setClassHook(name, value) {
        this.classHooks[name] = value;
      },


      /** ------------------------ Some Helpers --------------------------- */

      /*
       * To have a good ux, instead of hiding bar immediately, we hide bar
       * after some seconds by using this simple debounce-hidebar method.
       */
      showAndDefferedHideBar: function showAndDefferedHideBar(forceHideBar) {
        var _this4 = this;

        this.showBar();

        if (this.timeoutId) {
          clearTimeout(this.timeoutId);
          this.timeoutId = 0;
        }

        this.timeoutId = setTimeout(function () {
          _this4.timeoutId = 0;
          _this4.hideBar(forceHideBar);
        }, this.mergedOptions.bar.showDelay);
      },
      showBar: function showBar() {
        var opacity = this.mergedOptions.bar.opacity;
        this.bar.vBar.state.opacity = opacity;
        this.bar.hBar.state.opacity = opacity;
      },
      hideBar: function hideBar(forceHideBar) {
        var _vuescroll$state = this.vuescroll.state,
            isDragging = _vuescroll$state.isDragging,
            isRailHover = _vuescroll$state.isRailHover;
        /* istanbul ignore next */

        if (isDragging || isRailHover) {
          return;
        }

        if (forceHideBar && !this.mergedOptions.bar.keepShow) {
          this.bar.hBar.state.opacity = 0;
          this.bar.vBar.state.opacity = 0;
        }

        // add isDragging condition
        // to prevent from hiding bar while dragging the bar
        if (!this.mergedOptions.bar.keepShow && !this.vuescroll.state.isDragging) {
          this.bar.vBar.state.opacity = 0;
          this.bar.hBar.state.opacity = 0;
        }
      },
      useNumbericSize: function useNumbericSize() {
        this.vuescroll.state.currentSizeStrategy = 'number';
        var _mergedOptions$scroll = this.mergedOptions.scrollPanel,
            maxHeight = _mergedOptions$scroll.maxHeight,
            maxWidth = _mergedOptions$scroll.maxWidth;
        var _$el$parentNode = this.$el.parentNode,
            parentClientHeight = _$el$parentNode.clientHeight,
            parentClientWidth = _$el$parentNode.clientWidth;
        var _scrollPanelElm = this.scrollPanelElm,
            scrollHeight = _scrollPanelElm.scrollHeight,
            scrollWidth = _scrollPanelElm.scrollWidth;

        var width = void 0;
        var height = void 0;

        if (maxHeight || maxWidth) {
          height = scrollHeight <= maxHeight ? undefined : maxHeight;
          width = scrollWidth <= maxWidth ? undefined : maxWidth;
        } else {
          height = parentClientHeight;
          width = parentClientWidth;
        }

        this.vuescroll.state.height = height ? height + 'px' : undefined;
        this.vuescroll.state.width = width ? width + 'px' : undefined;
      },
      usePercentSize: function usePercentSize() {
        this.vuescroll.state.currentSizeStrategy = 'percent';

        this.vuescroll.state.height = '100%';
        this.vuescroll.state.width = '100%';
      },

      // Set its size to be equal to its parentNode
      setVsSize: function setVsSize() {
        var sizeStrategy = this.mergedOptions.vuescroll.sizeStrategy;
        var _mergedOptions$scroll2 = this.mergedOptions.scrollPanel,
            maxHeight = _mergedOptions$scroll2.maxHeight,
            maxWidth = _mergedOptions$scroll2.maxWidth;
        var _scrollPanelElm2 = this.scrollPanelElm,
            clientHeight = _scrollPanelElm2.clientHeight,
            clientWidth = _scrollPanelElm2.clientWidth;

        if (sizeStrategy == 'number' || maxHeight && clientHeight > maxHeight || maxWidth && clientWidth > maxWidth) {
          this.useNumbericSize();
        } else if (sizeStrategy == 'percent' && clientHeight != maxHeight && clientWidth != maxWidth) {
          this.usePercentSize();
        }
      },


      /** ------------------------ Init --------------------------- */
      initWatchOpsChange: function initWatchOpsChange() {
        var _this5 = this;

        var watchOpts = {
          deep: true,
          sync: true
        };
        this.$watch('mergedOptions', function () {
          setTimeout(function () {
            if (_this5.isSmallChangeThisTick) {
              _this5.isSmallChangeThisTick = false;
              _this5.updateBarStateAndEmitEvent('options-change');
              return;
            }
            _this5.refreshInternalStatus();
          }, 0);
        }, watchOpts);

        /**
         * We also watch `small` changes, and when small changes happen, we send
         * a signal to vuescroll, to tell it:
         * 1. we don't need to registry resize
         * 2. we don't need to registry scroller.
         */
        smallChangeArray.forEach(function (opts) {
          _this5.$watch(opts, function () {
            _this5.isSmallChangeThisTick = true;
          }, watchOpts);
        });
      },

      // scrollTo hash-anchor while mounted component have mounted.
      scrollToAnchor: function scrollToAnchor() /* istanbul ignore next */{
        var validateHashSelector = function validateHashSelector(hash) {
          return (/^#[a-zA-Z_]\d*$/.test(hash)
          );
        };

        var hash = window.location.hash;
        if (!hash || (hash = hash.slice(hash.lastIndexOf('#'))) && !validateHashSelector(hash)) {
          return;
        }

        var elm = document.querySelector(hash);
        if (!isChildInParent(elm, this.$el) || this.mergedOptions.scrollPanel.initialScrollY || this.mergedOptions.scrollPanel.initialScrollX) {
          return;
        }

        this.scrollIntoView(elm);
      }

      /** ------------------------ Registry Resize --------------------------- */

    }
  };
};

// begin importing
var scrollPanel = {
  name: 'scrollPanel',
  props: { ops: { type: Object, required: true } },
  methods: {
    // trigger scrollPanel options initialScrollX,
    // initialScrollY
    updateInitialScroll: function updateInitialScroll() {
      var x = 0;
      var y = 0;

      var parent = getRealParent(this);

      if (this.ops.initialScrollX) {
        x = this.ops.initialScrollX;
      }
      if (this.ops.initialScrollY) {
        y = this.ops.initialScrollY;
      }
      if (x || y) {
        parent.scrollTo({ x: x, y: y });
      }
    }
  },
  mounted: function mounted() {
    var _this = this;

    setTimeout(function () {
      if (!_this._isDestroyed) {
        _this.updateInitialScroll();
      }
    }, 0);
  },
  render: function render(h) {
    // eslint-disable-line
    var data = {
      class: ['__panel'],
      style: {
        position: 'relative',
        boxSizing: 'border-box'
      }
    };

    var parent = getRealParent(this);

    var _customPanel = parent.$slots['scroll-panel'];
    if (_customPanel) {
      return insertChildrenIntoSlot(h, _customPanel, this.$slots.default, data);
    }

    return h(
      'div',
      data,
      [[this.$slots.default]]
    );
  }
};

/**
 * Init following things
 * 1. Component
 * 2. Render
 * 3. Config
 */
function _install(core, render) {
  var _components;

  var extraConfigs = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [];
  var extraValidators = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : [];

  var components = (_components = {}, defineProperty(_components, scrollPanel.name, scrollPanel), defineProperty(_components, bar.name, bar), _components);

  var opts = {};
  opts.components = components;
  opts.render = render;
  opts.mixins = core;

  var comp = createComponent(opts);

  // Init Config
  extendOpts(extraConfigs, extraValidators);

  return comp;
}

/**
 * Get the children of parent those are in viewport
 */
function getCurrentViewportDom(parent, container) {
  var children = parent.children;
  var domFragment = [];

  var isCurrentview = function isCurrentview(dom) {
    var _dom$getBoundingClien = dom.getBoundingClientRect(),
        left = _dom$getBoundingClien.left,
        top = _dom$getBoundingClien.top,
        width = _dom$getBoundingClien.width,
        height = _dom$getBoundingClien.height;

    var _container$getBoundin = container.getBoundingClientRect(),
        parentLeft = _container$getBoundin.left,
        parentTop = _container$getBoundin.top,
        parentHeight = _container$getBoundin.height,
        parentWidth = _container$getBoundin.width;

    if (left - parentLeft + width > 0 && left - parentLeft < parentWidth && top - parentTop + height > 0 && top - parentTop < parentHeight) {
      return true;
    }
    return false;
  };

  for (var i = 0; i < children.length; i++) {
    var dom = children.item(i);
    if (isCurrentview(dom) && !dom.isResizeElm) {
      domFragment.push(dom);
    }
  }
  return domFragment;
}

/**
 *  Compatible to scroller's animation function
 */
function createEasingFunction(easing, easingPattern) {
  return function (time) {
    return easingPattern(easing, time);
  };
}

/**
 * Calculate the easing pattern
 * @link https://github.com/cferdinandi/smooth-scroll/blob/master/src/js/smooth-scroll.js
 * modified by wangyi7099
 * @param {String} type Easing pattern
 * @param {Number} time Time animation should take to complete
 * @returns {Number}
 */
function easingPattern(easing, time) {
  var pattern = null;
  /* istanbul ignore next */
  {
    // Default Easing Patterns
    if (easing === 'easeInQuad') pattern = time * time; // accelerating from zero velocity
    if (easing === 'easeOutQuad') pattern = time * (2 - time); // decelerating to zero velocity
    if (easing === 'easeInOutQuad') pattern = time < 0.5 ? 2 * time * time : -1 + (4 - 2 * time) * time; // acceleration until halfway, then deceleration
    if (easing === 'easeInCubic') pattern = time * time * time; // accelerating from zero velocity
    if (easing === 'easeOutCubic') pattern = --time * time * time + 1; // decelerating to zero velocity
    if (easing === 'easeInOutCubic') pattern = time < 0.5 ? 4 * time * time * time : (time - 1) * (2 * time - 2) * (2 * time - 2) + 1; // acceleration until halfway, then deceleration
    if (easing === 'easeInQuart') pattern = time * time * time * time; // accelerating from zero velocity
    if (easing === 'easeOutQuart') pattern = 1 - --time * time * time * time; // decelerating to zero velocity
    if (easing === 'easeInOutQuart') pattern = time < 0.5 ? 8 * time * time * time * time : 1 - 8 * --time * time * time * time; // acceleration until halfway, then deceleration
    if (easing === 'easeInQuint') pattern = time * time * time * time * time; // accelerating from zero velocity
    if (easing === 'easeOutQuint') pattern = 1 + --time * time * time * time * time; // decelerating to zero velocity
    if (easing === 'easeInOutQuint') pattern = time < 0.5 ? 16 * time * time * time * time * time : 1 + 16 * --time * time * time * time * time; // acceleration until halfway, then deceleration
  }
  return pattern || time; // no easing, no acceleration
}

function noop() {
  return true;
}

/* istanbul ignore next */
var now = Date.now || function () {
  return new Date().getTime();
};

var ScrollControl = function () {
  function ScrollControl() {
    classCallCheck(this, ScrollControl);

    this.init();

    this.isRunning = false;
  }

  createClass(ScrollControl, [{
    key: 'pause',
    value: function pause() {
      /* istanbul ignore if */
      if (!this.isRunning) return;

      this.isPaused = true;
    }
  }, {
    key: 'stop',
    value: function stop() {
      this.isStopped = true;
    }
  }, {
    key: 'continue',
    value: function _continue() {
      /* istanbul ignore if */
      if (!this.isPaused) return;

      this.isPaused = false;
      this.ts = now() - this.percent * this.spd;
      this.execScroll();
    }
  }, {
    key: 'startScroll',
    value: function startScroll(st, ed, spd) {
      var stepCb = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : noop;
      var completeCb = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : noop;
      var vertifyCb = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : noop;
      var easingMethod = arguments.length > 6 && arguments[6] !== undefined ? arguments[6] : noop;

      var df = ed - st;
      var dir = df > 0 ? -1 : 1;
      var nt = now();

      if (!this.isRunning) {
        this.init();
      }

      if (dir != this.dir || nt - this.ts > 200) {
        this.ts = nt;

        this.dir = dir;
        this.st = st;
        this.ed = ed;
        this.df = df;
      } /* istanbul ignore next */else {
          this.df += df;
        }

      this.spd = spd;

      this.completeCb = completeCb;
      this.vertifyCb = vertifyCb;
      this.stepCb = stepCb;
      this.easingMethod = easingMethod;

      if (!this.isRunning) this.execScroll();
    }
  }, {
    key: 'execScroll',
    value: function execScroll() {
      var _this = this;

      if (!this.df) return;

      var percent = this.percent || 0;
      this.percent = 0;
      this.isRunning = true;

      var loop = function loop() {
        /* istanbul ignore if */
        if (!_this.isRunning || !_this.vertifyCb(percent) || _this.isStopped) {
          _this.isRunning = false;
          return;
        }

        percent = (now() - _this.ts) / _this.spd;

        if (_this.isPaused) {
          _this.percent = percent;
          _this.isRunning = false;
          return;
        }

        if (percent < 1) {
          var value = _this.st + _this.df * _this.easingMethod(percent);
          _this.stepCb(value);
          _this.ref(loop);
        } else {
          // trigger complete
          _this.stepCb(_this.st + _this.df);
          _this.completeCb();

          _this.isRunning = false;
        }
      };

      this.ref(loop);
    }
  }, {
    key: 'init',
    value: function init() {
      this.st = 0;
      this.ed = 0;
      this.df = 0;
      this.spd = 0;
      this.ts = 0;
      this.dir = 0;
      this.ref = requestAnimationFrame(window);

      this.isPaused = false;
      this.isStopped = false;
    }
  }]);
  return ScrollControl;
}();

function scrollTo(elm, x, y) {
  var speed = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 300;
  var easing = arguments[4];
  var scrollingComplete = arguments[5];

  var scrollLeft = void 0,
      scrollTop = void 0,
      scrollHeight = void 0,
      scrollWidth = void 0,
      clientWidth = void 0,
      clientHeight = void 0;

  var _elm = elm,
      nodeType = _elm.nodeType;

  var scrollX = new ScrollControl();
  var scrollY = new ScrollControl();

  if (!nodeType) {
    warn('You must pass a dom for the first param, ' + 'for window scrolling, ' + 'you can pass document as the first param.');

    return;
  }

  if (nodeType == 9) {
    // document
    elm = elm.scrollingElement;
  }

  var _elm2 = elm;
  scrollLeft = _elm2.scrollLeft;
  scrollTop = _elm2.scrollTop;
  scrollHeight = _elm2.scrollHeight;
  scrollWidth = _elm2.scrollWidth;
  clientWidth = _elm2.clientWidth;
  clientHeight = _elm2.clientHeight;


  if (typeof x === 'undefined') {
    x = scrollLeft;
  } else {
    x = getNumericValue(x, scrollWidth - clientWidth);
  }
  if (typeof y === 'undefined') {
    y = scrollTop;
  } else {
    y = getNumericValue(y, scrollHeight - clientHeight);
  }

  var easingMethod = createEasingFunction(easing, easingPattern);
  scrollX.startScroll(scrollLeft, x, speed, function (dx) {
    elm.scrollLeft = dx;
  }, scrollingComplete, undefined, easingMethod);
  scrollY.startScroll(scrollTop, y, speed, function (dy) {
    elm.scrollTop = dy;
  }, scrollingComplete, undefined, easingMethod);
}

var api$1 = {
  mounted: function mounted() {
    // registry scroll
    this.scrollX = new ScrollControl();
    this.scrollY = new ScrollControl();
  },

  methods: {
    nativeStop: function nativeStop() {
      this.scrollX.stop();
      this.scrollY.stop();
    },
    nativePause: function nativePause() {
      this.scrollX.pause();
      this.scrollY.pause();
    },
    nativeContinue: function nativeContinue() {
      this.scrollX.continue();
      this.scrollY.continue();
    },
    nativeScrollTo: function nativeScrollTo(x, y, speed, easing) {
      if (speed === false) {
        
      } else if (typeof speed === 'undefined') {
        speed = this.mergedOptions.scrollPanel.speed;
      }
      var elm = this.scrollPanelElm;
      var scrollTop = elm.scrollTop,
          scrollLeft = elm.scrollLeft,
          scrollWidth = elm.scrollWidth,
          clientWidth = elm.clientWidth,
          scrollHeight = elm.scrollHeight,
          clientHeight = elm.clientHeight;

      if (typeof x === 'undefined') {
        x = scrollLeft;
      } else {
        x = getNumericValue(x, scrollWidth - clientWidth);
      }
      if (typeof y === 'undefined') {
        y = scrollTop;
      } else {
        y = getNumericValue(y, scrollHeight - clientHeight);
      }

      if (speed) {
        easing = easing || this.mergedOptions.scrollPanel.easing;
        var easingMethod = createEasingFunction(easing, easingPattern);

        if (x != scrollLeft) {
          this.scrollX.startScroll(scrollLeft, x, speed, function (x) {
            elm.scrollLeft = x;
          }, this.scrollingComplete.bind(this), undefined, easingMethod);
        }

        if (y != scrollTop) {
          this.scrollY.startScroll(scrollTop, y, speed, function (y) {
            elm.scrollTop = y;
          }, this.scrollingComplete.bind(this), undefined, easingMethod);
        }
      } else {
        elm.scrollTop = y;
        elm.scrollLeft = x;
      }
    },
    getCurrentviewDomNative: function getCurrentviewDomNative() {
      var parent = this.scrollContentElm;
      var domFragment = getCurrentViewportDom(parent, this.$el);
      return domFragment;
    }
  }
};

function getPanelData(context) {
  // scrollPanel data start
  var data = {
    ref: 'scrollPanel',
    style: {
      height: '100%',
      overflowY: 'scroll',
      overflowX: 'scroll'
    },
    class: [],
    nativeOn: {
      '&scroll': context.handleScroll
    },
    props: {
      ops: context.mergedOptions.scrollPanel
    }
  };

  context.scrollYEnable = true;
  context.scrollXEnable = true;

  data.nativeOn.DOMMouseScroll = data.nativeOn.mousewheel = context.onMouseWheel;

  var _context$mergedOption = context.mergedOptions.scrollPanel,
      scrollingY = _context$mergedOption.scrollingY,
      scrollingX = _context$mergedOption.scrollingX;


  if (!context.bar.hBar.state.size || !scrollingX) {
    context.scrollXEnable = false;
    data.style.overflowX = 'hidden';
  }

  if (!context.bar.vBar.state.size || !scrollingY) {
    context.scrollYEnable = false;
    data.style.overflowY = 'hidden';
  }

  var gutter = getGutter();
  /* istanbul ignore if */
  if (!gutter) {
    createHideBarStyle();
    data.class.push('__hidebar');
    if (isIos()) {
      data.style['-webkit-overflow-scrolling'] = 'touch';
    }
  } else {
    // hide system bar by use a negative value px
    // gutter should be 0 when manually disable scrollingX #14
    if (context.bar.vBar.state.size && context.mergedOptions.scrollPanel.scrollingY) {
      if (context.mergedOptions.scrollPanel.verticalNativeBarPos == 'right') {
        data.style.marginRight = '-' + gutter + 'px';
      } /* istanbul ignore next */else {
          data.style.marginLeft = '-' + gutter + 'px';
        }
    }
    if (context.bar.hBar.state.size && context.mergedOptions.scrollPanel.scrollingX) {
      data.style.height = 'calc(100% + ' + gutter + 'px)';
    }
  }

  // clear legency styles of slide mode...
  data.style.transformOrigin = '';
  data.style.transform = '';

  return data;
}

/**
 * create a scrollPanel
 *
 * @param {any} size
 * @param {any} context
 * @returns
 */
function createPanel(h, context) {
  var data = {};

  data = getPanelData(context);

  return h(
    'scrollPanel',
    data,
    [getPanelChildren(h, context)]
  );
}

function getPanelChildren(h, context) {
  var viewStyle = {
    position: 'relative',
    'box-sizing': 'border-box',
    'min-width': '100%',
    'min-height': '100%'
  };
  var data = {
    style: viewStyle,
    ref: 'scrollContent',
    class: '__view'
  };
  var _customContent = context.$slots['scroll-content'];

  if (context.mergedOptions.scrollPanel.scrollingX) {
    viewStyle.width = getComplitableStyle('width', 'fit-content');
  } else {
    data.style['width'] = '100%';
  }

  if (context.mergedOptions.scrollPanel.padding) {
    data.style.paddingRight = context.mergedOptions.rail.size;
  }

  if (_customContent) {
    return insertChildrenIntoSlot(h, _customContent, context.$slots.default, data);
  }

  return h(
    'div',
    data,
    [context.$slots.default]
  );
}

// detect content size change
function installResizeDetection(element, callback) {
  return injectObject(element, callback);
}

function injectObject(element, callback) {
  if (element.hasResized) {
    return;
  }

  var OBJECT_STYLE = 'display: block; position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none; padding: 0; margin: 0; opacity: 0; z-index: -1000; pointer-events: none;';
  // define a wrap due to ie's zIndex bug
  var objWrap = document.createElement('div');
  objWrap.style.cssText = OBJECT_STYLE;
  var object = document.createElement('object');
  object.style.cssText = OBJECT_STYLE;
  object.type = 'text/html';
  object.tabIndex = -1;

  object.onload = function () {
    eventCenter(object.contentDocument.defaultView, 'resize', callback);
  };
  // https://github.com/wnr/element-resize-detector/blob/aafe9f7ea11d1eebdab722c7c5b86634e734b9b8/src/detection-strategy/object.js#L159
  if (!isIE()) {
    object.data = 'about:blank';
  }
  objWrap.isResizeElm = true;
  objWrap.appendChild(object);
  element.appendChild(objWrap);
  if (isIE()) {
    object.data = 'about:blank';
  }
  return function destroy() {
    if (object.contentDocument) {
      eventCenter(object.contentDocument.defaultView, 'resize', callback, 'off');
    }
    element.removeChild(objWrap);
    element.hasResized = false;
  };
}

/**
 * These mixes is exclusive for native mode
 */

var update = {
  methods: {
    updateNativeModeBarState: function updateNativeModeBarState() {
      var container = this.scrollPanelElm;
      var isPercent = this.vuescroll.state.currentSizeStrategy == 'percent';
      var _vuescroll$state = this.vuescroll.state,
          width = _vuescroll$state.width,
          height = _vuescroll$state.height;

      var clientWidth = isPercent || !width ? container.clientWidth : width.slice(0, -2); // xxxpx ==> xxx
      var clientHeight = isPercent || !height ? container.clientHeight : height.slice(0, -2);

      var heightPercentage = clientHeight / container.scrollHeight;
      var widthPercentage = clientWidth / container.scrollWidth;

      this.bar.vBar.state.posValue = container.scrollTop * 100 / clientHeight;
      this.bar.hBar.state.posValue = container.scrollLeft * 100 / clientWidth;

      this.bar.vBar.state.size = heightPercentage < 1 ? heightPercentage : 0;
      this.bar.hBar.state.size = widthPercentage < 1 ? widthPercentage : 0;
    },
    getNativePosition: function getNativePosition() {
      return {
        scrollTop: this.scrollPanelElm.scrollTop,
        scrollLeft: this.scrollPanelElm.scrollLeft
      };
    },
    css: function css(dom, style) /* istanbul ignore next */{
      return window.getComputedStyle(dom)[style];
    },
    checkScrollable: function checkScrollable(e, dir, delta) /* istanbul ignore next */{
      var scrollable = false;

      // check mouse point scrollable.
      var dom = e.target ? e.target : e;
      while (dom && dom.nodeType == 1 && dom !== this.scrollPanelElm.parentNode && !/^BODY|HTML/.test(dom.nodeName)) {
        var ov = (dir == 'dy' ? this.css(dom, 'overflowY') : this.css(dom, 'overflowX')) || this.css(dom, 'overflow') || '';
        if (/scroll|auto/.test(ov)) {
          var _getScrollProcess = this.getScrollProcess(dom),
              v = _getScrollProcess.v,
              h = _getScrollProcess.h;

          if (dir == 'dx' && (delta < 0 && h > 0 || delta > 0 && h < 1) || dir == 'dy' && (delta < 0 && v > 0 || delta > 0 && v < 1)) {
            scrollable = dom == this.scrollPanelElm;
            break;
          }
        }
        dom = dom.parentNode ? dom.parentNode : false;
      }

      return scrollable;
    },
    onMouseWheel: function onMouseWheel(event) /* istanbul ignore next */{
      var duration = this.mergedOptions.vuescroll.wheelScrollDuration;
      var isReverse = this.mergedOptions.vuescroll.wheelDirectionReverse;

      var delta = 0;
      var dir = void 0;
      if (event.wheelDelta) {
        if (event.deltaY) {
          dir = 'dy';
          delta = event.deltaY;
        } else if (event.deltaX) {
          delta = event.deltaX;
          dir = 'dx';
        } else {
          delta = -1 * event.wheelDelta / 2;
        }
      } else if (event.detail) {
        // horizontal scroll
        if (event.axis == 1) {
          dir = 'dx';
        } else if (event.axis == 2) {
          // vertical scroll
          dir = 'dy';
        }
        delta = event.detail * 16;
      }

      if (event.shiftKey) {
        dir = 'dx';
      } else {
        dir = 'dy';
      }

      if (isReverse) {
        dir = dir == 'dx' ? 'dy' : 'dx';
      }

      if (this.checkScrollable(event, dir, delta)) {
        event.stopPropagation();
        event.preventDefault();

        this.scrollBy(defineProperty({}, dir, delta), duration);
      }
    }
  },
  computed: {
    scrollContentElm: function scrollContentElm() {
      return this.$refs['scrollContent']._isVue ? this.$refs['scrollContent'].$el : this.$refs['scrollContent'];
    }
  }
};

var mixins = [api$1, update];

var core = {
  mixins: mixins,
  methods: {
    destroy: function destroy() {
      /* istanbul ignore next */
      if (this.destroyResize) {
        this.destroyResize();
      }
    },
    getCurrentviewDom: function getCurrentviewDom() {
      return this.getCurrentviewDomNative();
    },
    internalScrollTo: function internalScrollTo(destX, destY, animate, easing) {
      this.nativeScrollTo(destX, destY, animate, easing);
    },
    internalStop: function internalStop() {
      this.nativeStop();
    },
    internalPause: function internalPause() {
      this.nativePause();
    },
    internalContinue: function internalContinue() {
      this.nativeContinue();
    },
    handleScroll: function handleScroll(nativeEvent) {
      this.updateBarStateAndEmitEvent('handle-scroll', nativeEvent);
    },
    updateBarStateAndEmitEvent: function updateBarStateAndEmitEvent(eventType) {
      var nativeEvent = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;

      this.updateNativeModeBarState();
      if (eventType) {
        this.emitEvent(eventType, nativeEvent);
      }
      if (this.mergedOptions.bar.onlyShowBarOnScroll) {
        if (eventType == 'handle-scroll' || eventType == 'handle-resize' || eventType == 'refresh-status' || eventType == 'window-resize' || eventType == 'options-change') {
          this.showAndDefferedHideBar(true /* forceHideBar: true */);
        }
      } else {
        this.showAndDefferedHideBar();
      }
    },
    getScrollProcess: function getScrollProcess(elm) {
      var _ref = elm || this.scrollPanelElm,
          scrollHeight = _ref.scrollHeight,
          scrollWidth = _ref.scrollWidth,
          clientHeight = _ref.clientHeight,
          clientWidth = _ref.clientWidth,
          scrollTop = _ref.scrollTop,
          scrollLeft = _ref.scrollLeft;

      var v = Math.min(scrollTop / (scrollHeight - clientHeight || 1), 1);
      var h = Math.min(scrollLeft / (scrollWidth - clientWidth || 1), 1);

      return {
        v: v,
        h: h
      };
    },
    emitEvent: function emitEvent(eventType) {
      var nativeEvent = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;
      var _scrollPanelElm = this.scrollPanelElm,
          scrollTop = _scrollPanelElm.scrollTop,
          scrollLeft = _scrollPanelElm.scrollLeft;


      var vertical = {
        type: 'vertical'
      };
      var horizontal = {
        type: 'horizontal'
      };

      var _getScrollProcess = this.getScrollProcess(),
          v = _getScrollProcess.v,
          h = _getScrollProcess.h;

      vertical.process = v;
      horizontal.process = h;

      vertical['barSize'] = this.bar.vBar.state.size;
      horizontal['barSize'] = this.bar.hBar.state.size;
      vertical['scrollTop'] = scrollTop;
      horizontal['scrollLeft'] = scrollLeft;

      this.$emit(eventType, vertical, horizontal, nativeEvent);
    },
    initVariables: function initVariables() {
      this.$el._isVuescroll = true;
    },
    refreshInternalStatus: function refreshInternalStatus() {
      // 1.set vuescroll height or width according to
      // sizeStrategy
      this.setVsSize();
      // 2. registry resize event
      this.registryResize();
      // 3. update scrollbar's height/width
      this.updateBarStateAndEmitEvent('refresh-status');
    },
    registryResize: function registryResize() {
      var _this = this;

      var resizeEnable = this.mergedOptions.vuescroll.detectResize;

      /* istanbul ignore next */
      if (this.destroyResize && resizeEnable) {
        return;
      }

      if (this.destroyResize) {
        this.destroyResize();
      }

      if (!resizeEnable) {
        return;
      }

      var contentElm = this.scrollContentElm;

      var vm = this;
      var handleWindowResize = function handleWindowResize() /* istanbul ignore next */{
        vm.updateBarStateAndEmitEvent('window-resize');
      };
      var handleDomResize = function handleDomResize() {
        var currentSize = {};
        currentSize['width'] = _this.scrollPanelElm.scrollWidth;
        currentSize['height'] = _this.scrollPanelElm.scrollHeight;
        _this.updateBarStateAndEmitEvent('handle-resize', currentSize);

        // Since content sie changes, we should tell parent to set
        // correct size to fit content's size
        _this.setVsSize();
      };
      window.addEventListener('resize', handleWindowResize, false);

      var destroyDomResize = installResizeDetection(contentElm, handleDomResize);

      var destroyWindowResize = function destroyWindowResize() {
        window.removeEventListener('resize', handleWindowResize, false);
      };

      this.destroyResize = function () {
        destroyWindowResize();
        destroyDomResize();

        _this.destroyResize = null;
      };
    },
    getPosition: function getPosition() {
      return this.getNativePosition();
    }
  }
};

var config = {
  vuescroll: {
    wheelScrollDuration: 0,
    wheelDirectionReverse: false
  }
};

var component = _install(core, createPanel, [config]);

function install(Vue$$1) {
  var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

  Vue$$1.component(opts.name || component.name, component);
  Vue$$1.prototype.$vuescrollConfig = opts.ops || {};
}

var Vuescroll = _extends({
  install: install,
  version: '4.16.1',
  refreshAll: refreshAll,
  scrollTo: scrollTo
}, component);

/* istanbul ignore if */
if (typeof window !== 'undefined' && window.Vue) {
  window.Vue.use(Vuescroll);
}

return Vuescroll;

})));