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function isHidden(el) {\n  var style = window.getComputedStyle(el);\n  var hidden = style.display === 'none'; // offsetParent returns null in the following situations:\n  // 1. The element or its parent element has the display property set to none.\n  // 2. The element has the position property set to fixed\n\n  var parentHidden = el.offsetParent === null && style.position !== 'fixed';\n  return hidden || parentHidden;\n}","// Utils\nimport { createNamespace } from '../utils';\nimport { range } from '../utils/format/number';\nimport { on, preventDefault } from '../utils/dom/event'; // Mixins\n\nimport { PopupMixin } from '../mixins/popup';\nimport { TouchMixin } from '../mixins/touch'; // Components\n\nimport Image from '../image';\nimport Swipe from '../swipe';\nimport Loading from '../loading';\nimport SwipeItem from '../swipe-item';\nimport Icon from '../icon';\n\nvar _createNamespace = createNamespace('image-preview'),\n    createComponent = _createNamespace[0],\n    bem = _createNamespace[1];\n\nfunction getDistance(touches) {\n  return Math.sqrt(Math.pow(touches[0].clientX - touches[1].clientX, 2) + Math.pow(touches[0].clientY - touches[1].clientY, 2));\n}\n\nexport default createComponent({\n  mixins: [PopupMixin({\n    skipToggleEvent: true\n  }), TouchMixin],\n  props: {\n    className: null,\n    lazyLoad: Boolean,\n    asyncClose: Boolean,\n    showIndicators: Boolean,\n    images: {\n      type: Array,\n      default: function _default() {\n        return [];\n      }\n    },\n    loop: {\n      type: Boolean,\n      default: true\n    },\n    swipeDuration: {\n      type: [Number, String],\n      default: 500\n    },\n    overlay: {\n      type: Boolean,\n      default: true\n    },\n    showIndex: {\n      type: Boolean,\n      default: true\n    },\n    startPosition: {\n      type: [Number, String],\n      default: 0\n    },\n    minZoom: {\n      type: [Number, String],\n      default: 1 / 3\n    },\n    maxZoom: {\n      type: [Number, String],\n      default: 3\n    },\n    overlayClass: {\n      type: String,\n      default: bem('overlay')\n    },\n    closeable: Boolean,\n    closeIcon: {\n      type: String,\n      default: 'clear'\n    },\n    closeIconPosition: {\n      type: String,\n      default: 'top-right'\n    }\n  },\n  data: function data() {\n    return {\n      scale: 1,\n      moveX: 0,\n      moveY: 0,\n      active: 0,\n      moving: false,\n      zooming: false,\n      doubleClickTimer: null\n    };\n  },\n  computed: {\n    imageStyle: function imageStyle() {\n      var scale = this.scale;\n      var style = {\n        transitionDuration: this.zooming || this.moving ? '0s' : '.3s'\n      };\n\n      if (scale !== 1) {\n        style.transform = \"scale3d(\" + scale + \", \" + scale + \", 1) translate(\" + this.moveX / scale + \"px, \" + this.moveY / scale + \"px)\";\n      }\n\n      return style;\n    }\n  },\n  watch: {\n    value: function value(val) {\n      var _this = this;\n\n      if (val) {\n        this.setActive(+this.startPosition);\n        this.$nextTick(function () {\n          _this.$refs.swipe.swipeTo(+_this.startPosition, {\n            immediate: true\n          });\n        });\n      } else {\n        this.$emit('close', {\n          index: this.active,\n          url: this.images[this.active]\n        });\n      }\n    },\n    startPosition: function startPosition(val) {\n      this.setActive(val);\n    },\n    shouldRender: {\n      handler: function handler(val) {\n        var _this2 = this;\n\n        if (val) {\n          this.$nextTick(function () {\n            var swipe = _this2.$refs.swipe.$el;\n            on(swipe, 'touchstart', _this2.onWrapperTouchStart);\n            on(swipe, 'touchmove', preventDefault);\n            on(swipe, 'touchend', _this2.onWrapperTouchEnd);\n            on(swipe, 'touchcancel', _this2.onWrapperTouchEnd);\n          });\n        }\n      },\n      immediate: true\n    }\n  },\n  methods: {\n    emitClose: function emitClose() {\n      if (!this.asyncClose) {\n        this.$emit('input', false);\n      }\n    },\n    onWrapperTouchStart: function onWrapperTouchStart() {\n      this.touchStartTime = new Date();\n    },\n    onWrapperTouchEnd: function onWrapperTouchEnd(event) {\n      var _this3 = this;\n\n      preventDefault(event);\n      var deltaTime = new Date() - this.touchStartTime;\n\n      var _ref = this.$refs.swipe || {},\n          _ref$offsetX = _ref.offsetX,\n          offsetX = _ref$offsetX === void 0 ? 0 : _ref$offsetX,\n          _ref$offsetY = _ref.offsetY,\n          offsetY = _ref$offsetY === void 0 ? 0 : _ref$offsetY; // prevent long tap to close component\n\n\n      if (deltaTime < 300 && offsetX < 10 && offsetY < 10) {\n        if (!this.doubleClickTimer) {\n          this.doubleClickTimer = setTimeout(function () {\n            _this3.emitClose();\n\n            _this3.doubleClickTimer = null;\n          }, 300);\n        } else {\n          clearTimeout(this.doubleClickTimer);\n          this.doubleClickTimer = null;\n          this.toggleScale();\n        }\n      }\n    },\n    startMove: function startMove(event) {\n      var image = event.currentTarget;\n      var rect = image.getBoundingClientRect();\n      var winWidth = window.innerWidth;\n      var winHeight = window.innerHeight;\n      this.touchStart(event);\n      this.moving = true;\n      this.startMoveX = this.moveX;\n      this.startMoveY = this.moveY;\n      this.maxMoveX = Math.max(0, (rect.width - winWidth) / 2);\n      this.maxMoveY = Math.max(0, (rect.height - winHeight) / 2);\n    },\n    startZoom: function startZoom(event) {\n      this.moving = false;\n      this.zooming = true;\n      this.startScale = this.scale;\n      this.startDistance = getDistance(event.touches);\n    },\n    onImageTouchStart: function onImageTouchStart(event) {\n      var touches = event.touches;\n\n      var _ref2 = this.$refs.swipe || {},\n          _ref2$offsetX = _ref2.offsetX,\n          offsetX = _ref2$offsetX === void 0 ? 0 : _ref2$offsetX;\n\n      if (touches.length === 1 && this.scale !== 1) {\n        this.startMove(event);\n      }\n      /* istanbul ignore else */\n      else if (touches.length === 2 && !offsetX) {\n          this.startZoom(event);\n        }\n    },\n    onImageTouchMove: function onImageTouchMove(event) {\n      var touches = event.touches;\n\n      if (this.moving || this.zooming) {\n        preventDefault(event, true);\n      }\n\n      if (this.moving) {\n        this.touchMove(event);\n        var moveX = this.deltaX + this.startMoveX;\n        var moveY = this.deltaY + this.startMoveY;\n        this.moveX = range(moveX, -this.maxMoveX, this.maxMoveX);\n        this.moveY = range(moveY, -this.maxMoveY, this.maxMoveY);\n      }\n\n      if (this.zooming && touches.length === 2) {\n        var distance = getDistance(touches);\n        var scale = this.startScale * distance / this.startDistance;\n        this.setScale(scale);\n      }\n    },\n    onImageTouchEnd: function onImageTouchEnd(event) {\n      /* istanbul ignore else */\n      if (this.moving || this.zooming) {\n        var stopPropagation = true;\n\n        if (this.moving && this.startMoveX === this.moveX && this.startMoveY === this.moveY) {\n          stopPropagation = false;\n        }\n\n        if (!event.touches.length) {\n          this.moving = false;\n          this.zooming = false;\n          this.startMoveX = 0;\n          this.startMoveY = 0;\n          this.startScale = 1;\n\n          if (this.scale < 1) {\n            this.resetScale();\n          }\n        }\n\n        if (stopPropagation) {\n          preventDefault(event, true);\n        }\n      }\n    },\n    setActive: function setActive(active) {\n      this.resetScale();\n\n      if (active !== this.active) {\n        this.active = active;\n        this.$emit('change', active);\n      }\n    },\n    setScale: function setScale(scale) {\n      var value = range(scale, +this.minZoom, +this.maxZoom);\n      this.scale = value;\n      this.$emit('scale', {\n        index: this.active,\n        scale: value\n      });\n    },\n    resetScale: function resetScale() {\n      this.setScale(1);\n      this.moveX = 0;\n      this.moveY = 0;\n    },\n    toggleScale: function toggleScale() {\n      var scale = this.scale > 1 ? 1 : 2;\n      this.setScale(scale);\n      this.moveX = 0;\n      this.moveY = 0;\n    },\n    genIndex: function genIndex() {\n      var h = this.$createElement;\n\n      if (this.showIndex) {\n        return h(\"div\", {\n          \"class\": bem('index')\n        }, [this.slots('index') || this.active + 1 + \" / \" + this.images.length]);\n      }\n    },\n    genCover: function genCover() {\n      var h = this.$createElement;\n      var cover = this.slots('cover');\n\n      if (cover) {\n        return h(\"div\", {\n          \"class\": bem('cover')\n        }, [cover]);\n      }\n    },\n    genImages: function genImages() {\n      var _this4 = this;\n\n      var h = this.$createElement;\n      var imageSlots = {\n        loading: function loading() {\n          return h(Loading, {\n            \"attrs\": {\n              \"type\": \"spinner\"\n            }\n          });\n        }\n      };\n      return h(Swipe, {\n        \"ref\": \"swipe\",\n        \"attrs\": {\n          \"loop\": this.loop,\n          \"indicatorColor\": \"white\",\n          \"duration\": this.swipeDuration,\n          \"initialSwipe\": this.startPosition,\n          \"showIndicators\": this.showIndicators\n        },\n        \"class\": bem('swipe'),\n        \"on\": {\n          \"change\": this.setActive\n        }\n      }, [this.images.map(function (image, index) {\n        return h(SwipeItem, [h(Image, {\n          \"attrs\": {\n            \"src\": image,\n            \"fit\": \"contain\",\n            \"lazyLoad\": _this4.lazyLoad\n          },\n          \"class\": bem('image'),\n          \"scopedSlots\": imageSlots,\n          \"style\": index === _this4.active ? _this4.imageStyle : null,\n          \"nativeOn\": {\n            \"touchstart\": _this4.onImageTouchStart,\n            \"touchmove\": _this4.onImageTouchMove,\n            \"touchend\": _this4.onImageTouchEnd,\n            \"touchcancel\": _this4.onImageTouchEnd\n          }\n        })]);\n      })]);\n    },\n    genClose: function genClose() {\n      var h = this.$createElement;\n\n      if (this.closeable) {\n        return h(Icon, {\n          \"attrs\": {\n            \"role\": \"button\",\n            \"name\": this.closeIcon\n          },\n          \"class\": bem('close-icon', this.closeIconPosition),\n          \"on\": {\n            \"click\": this.emitClose\n          }\n        });\n      }\n    }\n  },\n  render: function render() {\n    var h = arguments[0];\n\n    if (!this.shouldRender) {\n      return;\n    }\n\n    return h(\"transition\", {\n      \"attrs\": {\n        \"name\": \"van-fade\"\n      }\n    }, [h(\"div\", {\n      \"directives\": [{\n        name: \"show\",\n        value: this.value\n      }],\n      \"class\": [bem(), this.className]\n    }, [this.genClose(), this.genImages(), this.genIndex(), this.genCover()])]);\n  }\n});","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport Vue from 'vue';\nimport VueImagePreview from './ImagePreview';\nimport { isServer } from '../utils';\nvar instance;\nvar defaultConfig = {\n  loop: true,\n  images: [],\n  value: true,\n  minZoom: 1 / 3,\n  maxZoom: 3,\n  className: '',\n  onClose: null,\n  onChange: null,\n  lazyLoad: false,\n  showIndex: true,\n  closeable: false,\n  closeIcon: 'clear',\n  asyncClose: false,\n  startPosition: 0,\n  swipeDuration: 500,\n  showIndicators: false,\n  closeOnPopstate: false,\n  closeIconPosition: 'top-right'\n};\n\nvar initInstance = function initInstance() {\n  instance = new (Vue.extend(VueImagePreview))({\n    el: document.createElement('div')\n  });\n  document.body.appendChild(instance.$el);\n  instance.$on('change', function (index) {\n    if (instance.onChange) {\n      instance.onChange(index);\n    }\n  });\n  instance.$on('scale', function (data) {\n    if (instance.onScale) {\n      instance.onScale(data);\n    }\n  });\n};\n\nvar ImagePreview = function ImagePreview(images, startPosition) {\n  if (startPosition === void 0) {\n    startPosition = 0;\n  }\n\n  /* istanbul ignore if */\n  if (isServer) {\n    return;\n  }\n\n  if (!instance) {\n    initInstance();\n  }\n\n  var options = Array.isArray(images) ? {\n    images: images,\n    startPosition: startPosition\n  } : images;\n\n  _extends(instance, defaultConfig, options);\n\n  instance.$once('input', function (show) {\n    instance.value = show;\n  });\n\n  if (options.onClose) {\n    instance.$off('close');\n    instance.$once('close', options.onClose);\n  }\n\n  return instance;\n};\n\nImagePreview.install = function () {\n  Vue.use(VueImagePreview);\n};\n\nexport default ImagePreview;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport { createNamespace } from '../utils';\n\nvar _createNamespace = createNamespace('swipe-item'),\n    createComponent = _createNamespace[0],\n    bem = _createNamespace[1];\n\nexport default createComponent({\n  data: function data() {\n    return {\n      offset: 0\n    };\n  },\n  beforeCreate: function beforeCreate() {\n    this.$parent.swipes.push(this);\n  },\n  destroyed: function destroyed() {\n    this.$parent.swipes.splice(this.$parent.swipes.indexOf(this), 1);\n  },\n  render: function render() {\n    var h = arguments[0];\n    var _this$$parent = this.$parent,\n        vertical = _this$$parent.vertical,\n        computedWidth = _this$$parent.computedWidth,\n        computedHeight = _this$$parent.computedHeight;\n    var style = {\n      width: computedWidth + 'px',\n      height: vertical ? computedHeight + 'px' : '100%',\n      transform: \"translate\" + (vertical ? 'Y' : 'X') + \"(\" + this.offset + \"px)\"\n    };\n    return h(\"div\", {\n      \"class\": bem(),\n      \"style\": style,\n      \"on\": _extends({}, this.$listeners)\n    }, [this.slots()]);\n  }\n});","import _mergeJSXProps2 from \"@vue/babel-helper-vue-jsx-merge-props\";\nimport _mergeJSXProps from \"@vue/babel-helper-vue-jsx-merge-props\";\nimport { createNamespace, isDef, addUnit } from '../utils';\nimport Icon from '../icon';\n\nvar _createNamespace = createNamespace('image'),\n    createComponent = _createNamespace[0],\n    bem = _createNamespace[1];\n\nexport default createComponent({\n  props: {\n    src: String,\n    fit: String,\n    alt: String,\n    round: Boolean,\n    width: [Number, String],\n    height: [Number, String],\n    radius: [Number, String],\n    lazyLoad: Boolean,\n    showError: {\n      type: Boolean,\n      default: true\n    },\n    showLoading: {\n      type: Boolean,\n      default: true\n    },\n    errorIcon: {\n      type: String,\n      default: 'warning-o'\n    },\n    loadingIcon: {\n      type: String,\n      default: 'photo-o'\n    }\n  },\n  data: function data() {\n    return {\n      loading: true,\n      error: false\n    };\n  },\n  watch: {\n    src: function src() {\n      this.loading = true;\n      this.error = false;\n    }\n  },\n  computed: {\n    style: function style() {\n      var style = {};\n\n      if (isDef(this.width)) {\n        style.width = addUnit(this.width);\n      }\n\n      if (isDef(this.height)) {\n        style.height = addUnit(this.height);\n      }\n\n      if (isDef(this.radius)) {\n        style.overflow = 'hidden';\n        style.borderRadius = addUnit(this.radius);\n      }\n\n      return style;\n    }\n  },\n  created: function created() {\n    var $Lazyload = this.$Lazyload;\n\n    if ($Lazyload) {\n      $Lazyload.$on('loaded', this.onLazyLoaded);\n      $Lazyload.$on('error', this.onLazyLoadError);\n    }\n  },\n  beforeDestroy: function beforeDestroy() {\n    var $Lazyload = this.$Lazyload;\n\n    if ($Lazyload) {\n      $Lazyload.$off('loaded', this.onLazyLoaded);\n      $Lazyload.$off('error', this.onLazyLoadError);\n    }\n  },\n  methods: {\n    onLoad: function onLoad(event) {\n      this.loading = false;\n      this.$emit('load', event);\n    },\n    onLazyLoaded: function onLazyLoaded(_ref) {\n      var el = _ref.el;\n\n      if (el === this.$refs.image && this.loading) {\n        this.onLoad();\n      }\n    },\n    onLazyLoadError: function onLazyLoadError(_ref2) {\n      var el = _ref2.el;\n\n      if (el === this.$refs.image && !this.error) {\n        this.onError();\n      }\n    },\n    onError: function onError(event) {\n      this.error = true;\n      this.loading = false;\n      this.$emit('error', event);\n    },\n    onClick: function onClick(event) {\n      this.$emit('click', event);\n    },\n    genPlaceholder: function genPlaceholder() {\n      var h = this.$createElement;\n\n      if (this.loading && this.showLoading) {\n        return h(\"div\", {\n          \"class\": bem('loading')\n        }, [this.slots('loading') || h(Icon, {\n          \"attrs\": {\n            \"name\": this.loadingIcon\n          },\n          \"class\": bem('loading-icon')\n        })]);\n      }\n\n      if (this.error && this.showError) {\n        return h(\"div\", {\n          \"class\": bem('error')\n        }, [this.slots('error') || h(Icon, {\n          \"attrs\": {\n            \"name\": this.errorIcon\n          },\n          \"class\": bem('error-icon')\n        })]);\n      }\n    },\n    genImage: function genImage() {\n      var h = this.$createElement;\n      var imgData = {\n        class: bem('img'),\n        attrs: {\n          alt: this.alt\n        },\n        style: {\n          objectFit: this.fit\n        }\n      };\n\n      if (this.error) {\n        return;\n      }\n\n      if (this.lazyLoad) {\n        return h(\"img\", _mergeJSXProps([{\n          \"ref\": \"image\",\n          \"directives\": [{\n            name: \"lazy\",\n            value: this.src\n          }]\n        }, imgData]));\n      }\n\n      return h(\"img\", _mergeJSXProps2([{\n        \"attrs\": {\n          \"src\": this.src\n        },\n        \"on\": {\n          \"load\": this.onLoad,\n          \"error\": this.onError\n        }\n      }, imgData]));\n    }\n  },\n  render: function render() {\n    var h = arguments[0];\n    return h(\"div\", {\n      \"class\": bem({\n        round: this.round\n      }),\n      \"style\": this.style,\n      \"on\": {\n        \"click\": this.onClick\n      }\n    }, [this.genImage(), this.genPlaceholder()]);\n  }\n});","/**\n * requestAnimationFrame polyfill\n */\nimport { isServer } from '..';\nvar prev = Date.now();\n/* istanbul ignore next */\n\nfunction fallback(fn) {\n  var curr = Date.now();\n  var ms = Math.max(0, 16 - (curr - prev));\n  var id = setTimeout(fn, ms);\n  prev = curr + ms;\n  return id;\n}\n/* istanbul ignore next */\n\n\nvar root = isServer ? global : window;\n/* istanbul ignore next */\n\nvar iRaf = root.requestAnimationFrame || fallback;\n/* istanbul ignore next */\n\nvar iCancel = root.cancelAnimationFrame || root.clearTimeout;\nexport function raf(fn) {\n  return iRaf.call(root, fn);\n} // double raf for animation\n\nexport function doubleRaf(fn) {\n  raf(function () {\n    raf(fn);\n  });\n}\nexport function cancelRaf(id) {\n  iCancel.call(root, id);\n}","export function range(num, min, max) {\n  return Math.min(Math.max(num, min), max);\n}","// Utils\nimport { createNamespace } from '../utils';\nimport { isHidden } from '../utils/dom/style';\nimport { preventDefault } from '../utils/dom/event';\nimport { doubleRaf } from '../utils/dom/raf';\nimport { range } from '../utils/format/number'; // Mixins\n\nimport { TouchMixin } from '../mixins/touch';\nimport { BindEventMixin } from '../mixins/bind-event';\n\nvar _createNamespace = createNamespace('swipe'),\n    createComponent = _createNamespace[0],\n    bem = _createNamespace[1];\n\nexport default createComponent({\n  mixins: [TouchMixin, BindEventMixin(function (bind, isBind) {\n    bind(window, 'resize', this.resize, true);\n    bind(window, 'visibilitychange', this.onVisibilityChange);\n\n    if (isBind) {\n      this.initialize();\n    } else {\n      this.clear();\n    }\n  })],\n  props: {\n    width: [Number, String],\n    height: [Number, String],\n    autoplay: [Number, String],\n    vertical: Boolean,\n    indicatorColor: String,\n    loop: {\n      type: Boolean,\n      default: true\n    },\n    duration: {\n      type: [Number, String],\n      default: 500\n    },\n    touchable: {\n      type: Boolean,\n      default: true\n    },\n    initialSwipe: {\n      type: [Number, String],\n      default: 0\n    },\n    showIndicators: {\n      type: Boolean,\n      default: true\n    },\n    stopPropagation: {\n      type: Boolean,\n      default: true\n    }\n  },\n  data: function data() {\n    return {\n      computedWidth: 0,\n      computedHeight: 0,\n      offset: 0,\n      active: 0,\n      deltaX: 0,\n      deltaY: 0,\n      swipes: [],\n      swiping: false\n    };\n  },\n  watch: {\n    swipes: function swipes() {\n      this.initialize();\n    },\n    initialSwipe: function initialSwipe() {\n      this.initialize();\n    },\n    autoplay: function autoplay(_autoplay) {\n      if (_autoplay > 0) {\n        this.autoPlay();\n      } else {\n        this.clear();\n      }\n    }\n  },\n  computed: {\n    count: function count() {\n      return this.swipes.length;\n    },\n    delta: function delta() {\n      return this.vertical ? this.deltaY : this.deltaX;\n    },\n    size: function size() {\n      return this[this.vertical ? 'computedHeight' : 'computedWidth'];\n    },\n    trackSize: function trackSize() {\n      return this.count * this.size;\n    },\n    activeIndicator: function activeIndicator() {\n      return (this.active + this.count) % this.count;\n    },\n    isCorrectDirection: function isCorrectDirection() {\n      var expect = this.vertical ? 'vertical' : 'horizontal';\n      return this.direction === expect;\n    },\n    trackStyle: function trackStyle() {\n      var _ref;\n\n      var mainAxis = this.vertical ? 'height' : 'width';\n      var crossAxis = this.vertical ? 'width' : 'height';\n      return _ref = {}, _ref[mainAxis] = this.trackSize + \"px\", _ref[crossAxis] = this[crossAxis] ? this[crossAxis] + \"px\" : '', _ref.transitionDuration = (this.swiping ? 0 : this.duration) + \"ms\", _ref.transform = \"translate\" + (this.vertical ? 'Y' : 'X') + \"(\" + this.offset + \"px)\", _ref;\n    },\n    indicatorStyle: function indicatorStyle() {\n      return {\n        backgroundColor: this.indicatorColor\n      };\n    },\n    minOffset: function minOffset() {\n      var rect = this.$el.getBoundingClientRect();\n      return (this.vertical ? rect.height : rect.width) - this.size * this.count;\n    }\n  },\n  mounted: function mounted() {\n    this.bindTouchEvent(this.$refs.track);\n  },\n  methods: {\n    // initialize swipe position\n    initialize: function initialize(active) {\n      if (active === void 0) {\n        active = +this.initialSwipe;\n      }\n\n      clearTimeout(this.timer);\n\n      if (this.$el && !isHidden(this.$el)) {\n        var rect = this.$el.getBoundingClientRect();\n        this.computedWidth = Math.round(+this.width || rect.width);\n        this.computedHeight = Math.round(+this.height || rect.height);\n      }\n\n      this.swiping = true;\n      this.active = active;\n      this.offset = this.count > 1 ? -this.size * this.active : 0;\n      this.swipes.forEach(function (swipe) {\n        swipe.offset = 0;\n      });\n      this.autoPlay();\n    },\n    // @exposed-api\n    resize: function resize() {\n      this.initialize(this.activeIndicator);\n    },\n    onVisibilityChange: function onVisibilityChange() {\n      if (document.hidden) {\n        this.clear();\n      } else {\n        this.autoPlay();\n      }\n    },\n    onTouchStart: function onTouchStart(event) {\n      if (!this.touchable) return;\n      this.clear();\n      this.touchStart(event);\n      this.correctPosition();\n    },\n    onTouchMove: function onTouchMove(event) {\n      if (!this.touchable || !this.swiping) return;\n      this.touchMove(event);\n\n      if (this.isCorrectDirection) {\n        preventDefault(event, this.stopPropagation);\n        this.move({\n          offset: this.delta\n        });\n      }\n    },\n    onTouchEnd: function onTouchEnd() {\n      if (!this.touchable || !this.swiping) return;\n\n      if (this.delta && this.isCorrectDirection) {\n        var offset = this.vertical ? this.offsetY : this.offsetX;\n        this.move({\n          pace: offset > 0 ? this.delta > 0 ? -1 : 1 : 0,\n          emitChange: true\n        });\n      }\n\n      this.swiping = false;\n      this.autoPlay();\n    },\n    getTargetActive: function getTargetActive(pace) {\n      var active = this.active,\n          count = this.count;\n\n      if (pace) {\n        if (this.loop) {\n          return range(active + pace, -1, count);\n        }\n\n        return range(active + pace, 0, count - 1);\n      }\n\n      return active;\n    },\n    getTargetOffset: function getTargetOffset(targetActive, offset) {\n      var currentPosition = targetActive * this.size;\n\n      if (!this.loop) {\n        currentPosition = Math.min(currentPosition, -this.minOffset);\n      }\n\n      var targetOffset = Math.round(offset - currentPosition);\n\n      if (!this.loop) {\n        targetOffset = range(targetOffset, this.minOffset, 0);\n      }\n\n      return targetOffset;\n    },\n    move: function move(_ref2) {\n      var _ref2$pace = _ref2.pace,\n          pace = _ref2$pace === void 0 ? 0 : _ref2$pace,\n          _ref2$offset = _ref2.offset,\n          offset = _ref2$offset === void 0 ? 0 : _ref2$offset,\n          emitChange = _ref2.emitChange;\n      var loop = this.loop,\n          count = this.count,\n          active = this.active,\n          swipes = this.swipes,\n          trackSize = this.trackSize,\n          minOffset = this.minOffset;\n\n      if (count <= 1) {\n        return;\n      }\n\n      var targetActive = this.getTargetActive(pace);\n      var targetOffset = this.getTargetOffset(targetActive, offset); // auto move first and last swipe in loop mode\n\n      if (loop) {\n        if (swipes[0]) {\n          var outRightBound = targetOffset < minOffset;\n          swipes[0].offset = outRightBound ? trackSize : 0;\n        }\n\n        if (swipes[count - 1]) {\n          var outLeftBound = targetOffset > 0;\n          swipes[count - 1].offset = outLeftBound ? -trackSize : 0;\n        }\n      }\n\n      this.active = targetActive;\n      this.offset = targetOffset;\n\n      if (emitChange && targetActive !== active) {\n        this.$emit('change', this.activeIndicator);\n      }\n    },\n    // @exposed-api\n    prev: function prev() {\n      var _this = this;\n\n      this.correctPosition();\n      this.resetTouchStatus();\n      doubleRaf(function () {\n        _this.swiping = false;\n\n        _this.move({\n          pace: -1,\n          emitChange: true\n        });\n      });\n    },\n    // @exposed-api\n    next: function next() {\n      var _this2 = this;\n\n      this.correctPosition();\n      this.resetTouchStatus();\n      doubleRaf(function () {\n        _this2.swiping = false;\n\n        _this2.move({\n          pace: 1,\n          emitChange: true\n        });\n      });\n    },\n    // @exposed-api\n    swipeTo: function swipeTo(index, options) {\n      var _this3 = this;\n\n      if (options === void 0) {\n        options = {};\n      }\n\n      this.correctPosition();\n      this.resetTouchStatus();\n      doubleRaf(function () {\n        var targetIndex;\n\n        if (_this3.loop && index === _this3.count) {\n          targetIndex = _this3.active === 0 ? 0 : index;\n        } else {\n          targetIndex = index % _this3.count;\n        }\n\n        if (options.immediate) {\n          doubleRaf(function () {\n            _this3.swiping = false;\n          });\n        } else {\n          _this3.swiping = false;\n        }\n\n        _this3.move({\n          pace: targetIndex - _this3.active,\n          emitChange: true\n        });\n      });\n    },\n    correctPosition: function correctPosition() {\n      this.swiping = true;\n\n      if (this.active <= -1) {\n        this.move({\n          pace: this.count\n        });\n      }\n\n      if (this.active >= this.count) {\n        this.move({\n          pace: -this.count\n        });\n      }\n    },\n    clear: function clear() {\n      clearTimeout(this.timer);\n    },\n    autoPlay: function autoPlay() {\n      var _this4 = this;\n\n      var autoplay = this.autoplay;\n\n      if (autoplay > 0 && this.count > 1) {\n        this.clear();\n        this.timer = setTimeout(function () {\n          _this4.next();\n\n          _this4.autoPlay();\n        }, autoplay);\n      }\n    },\n    genIndicator: function genIndicator() {\n      var _this5 = this;\n\n      var h = this.$createElement;\n      var count = this.count,\n          activeIndicator = this.activeIndicator;\n      var slot = this.slots('indicator');\n\n      if (slot) {\n        return slot;\n      }\n\n      if (this.showIndicators && count > 1) {\n        return h(\"div\", {\n          \"class\": bem('indicators', {\n            vertical: this.vertical\n          })\n        }, [Array.apply(void 0, Array(count)).map(function (empty, index) {\n          return h(\"i\", {\n            \"class\": bem('indicator', {\n              active: index === activeIndicator\n            }),\n            \"style\": index === activeIndicator ? _this5.indicatorStyle : null\n          });\n        })]);\n      }\n    }\n  },\n  render: function render() {\n    var h = arguments[0];\n    return h(\"div\", {\n      \"class\": bem()\n    }, [h(\"div\", {\n      \"ref\": \"track\",\n      \"style\": this.trackStyle,\n      \"class\": bem('track')\n    }, [this.slots()]), this.genIndicator()]);\n  }\n});"],"sourceRoot":""}