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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}","import { createNamespace } from '../utils';\n\nvar _createNamespace = createNamespace('image-preview'),\n    createComponent = _createNamespace[0],\n    bem = _createNamespace[1];\n\nexport { createComponent, bem };","// 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 { ParentMixin } from '../mixins/relation';\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, ParentMixin('vanSwipe'), BindEventMixin(function (bind, isBind) {\n    bind(window, 'resize', this.resize, true);\n    bind(window, 'orientationchange', 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    lazyRender: 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      rect: null,\n      offset: 0,\n      active: 0,\n      deltaX: 0,\n      deltaY: 0,\n      swiping: false,\n      computedWidth: 0,\n      computedHeight: 0\n    };\n  },\n  watch: {\n    children: function children() {\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.children.length;\n    },\n    maxCount: function maxCount() {\n      return Math.ceil(Math.abs(this.minOffset) / this.size);\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 style = {\n        transitionDuration: (this.swiping ? 0 : this.duration) + \"ms\",\n        transform: \"translate\" + (this.vertical ? 'Y' : 'X') + \"(\" + this.offset + \"px)\"\n      };\n\n      if (this.size) {\n        var mainAxis = this.vertical ? 'height' : 'width';\n        var crossAxis = this.vertical ? 'width' : 'height';\n        style[mainAxis] = this.trackSize + \"px\";\n        style[crossAxis] = this[crossAxis] ? this[crossAxis] + \"px\" : '';\n      }\n\n      return style;\n    },\n    indicatorStyle: function indicatorStyle() {\n      return {\n        backgroundColor: this.indicatorColor\n      };\n    },\n    minOffset: function minOffset() {\n      return (this.vertical ? this.rect.height : this.rect.width) - this.size * this.count;\n    }\n  },\n  mounted: function mounted() {\n    this.bindTouchEvent(this.$refs.track);\n  },\n  methods: {\n    // initialize swipe position\n    initialize: function initialize(active) {\n      if (active === void 0) {\n        active = +this.initialSwipe;\n      }\n\n      if (!this.$el || isHidden(this.$el)) {\n        return;\n      }\n\n      clearTimeout(this.timer);\n      var rect = {\n        width: this.$el.offsetWidth,\n        height: this.$el.offsetHeight\n      };\n      this.rect = rect;\n      this.swiping = true;\n      this.active = active;\n      this.computedWidth = +this.width || rect.width;\n      this.computedHeight = +this.height || rect.height;\n      this.offset = this.getTargetOffset(active);\n      this.children.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.touchStartTime = Date.now();\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      var size = this.size,\n          delta = this.delta;\n      var duration = Date.now() - this.touchStartTime;\n      var speed = delta / duration;\n      var shouldSwipe = Math.abs(speed) > 0.25 || Math.abs(delta) > size / 2;\n\n      if (shouldSwipe && this.isCorrectDirection) {\n        var offset = this.vertical ? this.offsetY : this.offsetX;\n        var pace = 0;\n\n        if (this.loop) {\n          pace = offset > 0 ? delta > 0 ? -1 : 1 : 0;\n        } else {\n          pace = -Math[delta > 0 ? 'ceil' : 'floor'](delta / size);\n        }\n\n        this.move({\n          pace: pace,\n          emitChange: true\n        });\n      } else if (delta) {\n        this.move({\n          pace: 0\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          maxCount = this.maxCount;\n\n      if (pace) {\n        if (this.loop) {\n          return range(active + pace, -1, count);\n        }\n\n        return range(active + pace, 0, maxCount);\n      }\n\n      return active;\n    },\n    getTargetOffset: function getTargetOffset(targetActive, offset) {\n      if (offset === void 0) {\n        offset = 0;\n      }\n\n      var currentPosition = targetActive * this.size;\n\n      if (!this.loop) {\n        currentPosition = Math.min(currentPosition, -this.minOffset);\n      }\n\n      var targetOffset = offset - currentPosition;\n\n      if (!this.loop) {\n        targetOffset = range(targetOffset, this.minOffset, 0);\n      }\n\n      return targetOffset;\n    },\n    move: function move(_ref) {\n      var _ref$pace = _ref.pace,\n          pace = _ref$pace === void 0 ? 0 : _ref$pace,\n          _ref$offset = _ref.offset,\n          offset = _ref$offset === void 0 ? 0 : _ref$offset,\n          emitChange = _ref.emitChange;\n      var loop = this.loop,\n          count = this.count,\n          active = this.active,\n          children = this.children,\n          trackSize = this.trackSize,\n          minOffset = this.minOffset;\n\n      if (count <= 1) {\n        return;\n      }\n\n      var targetActive = this.getTargetActive(pace);\n      var targetOffset = this.getTargetOffset(targetActive, offset); // auto move first and last swipe in loop mode\n\n      if (loop) {\n        if (children[0] && targetOffset !== minOffset) {\n          var outRightBound = targetOffset < minOffset;\n          children[0].offset = outRightBound ? trackSize : 0;\n        }\n\n        if (children[count - 1] && targetOffset !== 0) {\n          var outLeftBound = targetOffset > 0;\n          children[count - 1].offset = outLeftBound ? -trackSize : 0;\n        }\n      }\n\n      this.active = targetActive;\n      this.offset = targetOffset;\n\n      if (emitChange && targetActive !== active) {\n        this.$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.$createElement;\n      var count = this.count,\n          activeIndicator = this.activeIndicator;\n      var slot = this.slots('indicator');\n\n      if (slot) {\n        return slot;\n      }\n\n      if (this.showIndicators && count > 1) {\n        return h(\"div\", {\n          \"class\": bem('indicators', {\n            vertical: this.vertical\n          })\n        }, [Array.apply(void 0, Array(count)).map(function (empty, index) {\n          return h(\"i\", {\n            \"class\": bem('indicator', {\n              active: index === activeIndicator\n            }),\n            \"style\": index === activeIndicator ? _this5.indicatorStyle : null\n          });\n        })]);\n      }\n    }\n  },\n  render: function render() {\n    var h = arguments[0];\n    return h(\"div\", {\n      \"class\": bem()\n    }, [h(\"div\", {\n      \"ref\": \"track\",\n      \"style\": this.trackStyle,\n      \"class\": bem('track', {\n        vertical: this.vertical\n      })\n    }, [this.slots()]), this.genIndicator()]);\n  }\n});","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport { createNamespace } from '../utils';\nimport { ChildrenMixin } from '../mixins/relation';\n\nvar _createNamespace = createNamespace('swipe-item'),\n    createComponent = _createNamespace[0],\n    bem = _createNamespace[1];\n\nexport default createComponent({\n  mixins: [ChildrenMixin('vanSwipe')],\n  data: function data() {\n    return {\n      offset: 0,\n      inited: false,\n      mounted: false\n    };\n  },\n  mounted: function mounted() {\n    var _this = this;\n\n    this.$nextTick(function () {\n      _this.mounted = true;\n    });\n  },\n  computed: {\n    style: function style() {\n      var style = {};\n      var _this$parent = this.parent,\n          size = _this$parent.size,\n          vertical = _this$parent.vertical;\n\n      if (size) {\n        style[vertical ? 'height' : 'width'] = size + \"px\";\n      }\n\n      if (this.offset) {\n        style.transform = \"translate\" + (vertical ? 'Y' : 'X') + \"(\" + this.offset + \"px)\";\n      }\n\n      return style;\n    },\n    shouldRender: function shouldRender() {\n      var index = this.index,\n          inited = this.inited,\n          parent = this.parent,\n          mounted = this.mounted;\n\n      if (!parent.lazyRender || inited) {\n        return true;\n      } // wait for all item to mount, so we can get the exact count\n\n\n      if (!mounted) {\n        return false;\n      }\n\n      var active = parent.activeIndicator;\n      var maxActive = parent.count - 1;\n      var prevActive = active === 0 && parent.loop ? maxActive : active - 1;\n      var nextActive = active === maxActive && parent.loop ? 0 : active + 1;\n      var shouldRender = index === active || index === prevActive || index === nextActive;\n\n      if (shouldRender) {\n        this.inited = true;\n      }\n\n      return shouldRender;\n    }\n  },\n  render: function render() {\n    var h = arguments[0];\n    return h(\"div\", {\n      \"class\": bem(),\n      \"style\": this.style,\n      \"on\": _extends({}, this.$listeners)\n    }, [this.shouldRender && this.slots()]);\n  }\n});","// Utils\nimport { bem } from './shared';\nimport { range } from '../utils/format/number';\nimport { preventDefault } from '../utils/dom/event'; // Mixins\n\nimport { TouchMixin } from '../mixins/touch'; // Component\n\nimport Image from '../image';\nimport Loading from '../loading';\nimport SwipeItem from '../swipe-item';\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 {\n  mixins: [TouchMixin],\n  props: {\n    src: String,\n    show: Boolean,\n    active: Number,\n    minZoom: [Number, String],\n    maxZoom: [Number, String],\n    rootWidth: Number,\n    rootHeight: Number\n  },\n  data: function data() {\n    return {\n      scale: 1,\n      moveX: 0,\n      moveY: 0,\n      moving: false,\n      zooming: false,\n      imageRatio: 0,\n      displayWidth: 0,\n      displayHeight: 0\n    };\n  },\n  computed: {\n    vertical: function vertical() {\n      var rootWidth = this.rootWidth,\n          rootHeight = this.rootHeight;\n      var rootRatio = rootHeight / rootWidth;\n      return this.imageRatio > rootRatio;\n    },\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        var offsetX = this.moveX / scale;\n        var offsetY = this.moveY / scale;\n        style.transform = \"scale(\" + scale + \", \" + scale + \") translate(\" + offsetX + \"px, \" + offsetY + \"px)\";\n      }\n\n      return style;\n    },\n    maxMoveX: function maxMoveX() {\n      if (this.imageRatio) {\n        var displayWidth = this.vertical ? this.rootHeight / this.imageRatio : this.rootWidth;\n        return Math.max(0, (this.scale * displayWidth - this.rootWidth) / 2);\n      }\n\n      return 0;\n    },\n    maxMoveY: function maxMoveY() {\n      if (this.imageRatio) {\n        var displayHeight = this.vertical ? this.rootHeight : this.rootWidth * this.imageRatio;\n        return Math.max(0, (this.scale * displayHeight - this.rootHeight) / 2);\n      }\n\n      return 0;\n    }\n  },\n  watch: {\n    active: 'resetScale',\n    show: function show(val) {\n      if (!val) {\n        this.resetScale();\n      }\n    }\n  },\n  mounted: function mounted() {\n    this.bindTouchEvent(this.$el);\n  },\n  methods: {\n    resetScale: function resetScale() {\n      this.setScale(1);\n      this.moveX = 0;\n      this.moveY = 0;\n    },\n    setScale: function setScale(scale) {\n      scale = range(scale, +this.minZoom, +this.maxZoom);\n\n      if (scale !== this.scale) {\n        this.scale = scale;\n        this.$emit('scale', {\n          scale: this.scale,\n          index: this.active\n        });\n      }\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    onTouchStart: function onTouchStart(event) {\n      var touches = event.touches;\n      var _this$offsetX = this.offsetX,\n          offsetX = _this$offsetX === void 0 ? 0 : _this$offsetX;\n      this.touchStart(event);\n      this.touchStartTime = new Date();\n      this.startMoveX = this.moveX;\n      this.startMoveY = this.moveY;\n      this.moving = touches.length === 1 && this.scale !== 1;\n      this.zooming = touches.length === 2 && !offsetX;\n\n      if (this.zooming) {\n        this.startScale = this.scale;\n        this.startDistance = getDistance(event.touches);\n      }\n    },\n    onTouchMove: function onTouchMove(event) {\n      var touches = event.touches;\n      this.touchMove(event);\n\n      if (this.moving || this.zooming) {\n        preventDefault(event, true);\n      }\n\n      if (this.moving) {\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    onTouchEnd: function onTouchEnd(event) {\n      var stopPropagation = false;\n      /* istanbul ignore else */\n\n      if (this.moving || this.zooming) {\n        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          if (this.zooming) {\n            this.moveX = range(this.moveX, -this.maxMoveX, this.maxMoveX);\n            this.moveY = range(this.moveY, -this.maxMoveY, this.maxMoveY);\n            this.zooming = false;\n          }\n\n          this.moving = 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      } // eliminate tap delay on safari\n\n\n      preventDefault(event, stopPropagation);\n      this.checkTap();\n      this.resetTouchStatus();\n    },\n    checkTap: function checkTap() {\n      var _this = this;\n\n      var _this$offsetX2 = this.offsetX,\n          offsetX = _this$offsetX2 === void 0 ? 0 : _this$offsetX2,\n          _this$offsetY = this.offsetY,\n          offsetY = _this$offsetY === void 0 ? 0 : _this$offsetY;\n      var deltaTime = new Date() - this.touchStartTime;\n      var TAP_TIME = 250;\n      var TAP_OFFSET = 10;\n\n      if (offsetX < TAP_OFFSET && offsetY < TAP_OFFSET && deltaTime < TAP_TIME) {\n        if (this.doubleTapTimer) {\n          clearTimeout(this.doubleTapTimer);\n          this.doubleTapTimer = null;\n          this.toggleScale();\n        } else {\n          this.doubleTapTimer = setTimeout(function () {\n            _this.$emit('close');\n\n            _this.doubleTapTimer = null;\n          }, TAP_TIME);\n        }\n      }\n    },\n    onLoad: function onLoad(event) {\n      var _event$target = event.target,\n          naturalWidth = _event$target.naturalWidth,\n          naturalHeight = _event$target.naturalHeight;\n      this.imageRatio = naturalHeight / naturalWidth;\n    }\n  },\n  render: function render() {\n    var h = arguments[0];\n    var imageSlots = {\n      loading: function loading() {\n        return h(Loading, {\n          \"attrs\": {\n            \"type\": \"spinner\"\n          }\n        });\n      }\n    };\n    return h(SwipeItem, {\n      \"class\": bem('swipe-item')\n    }, [h(Image, {\n      \"attrs\": {\n        \"src\": this.src,\n        \"fit\": \"contain\"\n      },\n      \"class\": bem('image', {\n        vertical: this.vertical\n      }),\n      \"style\": this.imageStyle,\n      \"scopedSlots\": imageSlots,\n      \"on\": {\n        \"load\": this.onLoad\n      }\n    })]);\n  }\n};","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport Vue from 'vue';\nimport VueImagePreview from './ImagePreview';\nimport { isServer } from '../utils';\nvar instance;\nvar defaultConfig = {\n  loop: true,\n  value: true,\n  images: [],\n  maxZoom: 3,\n  minZoom: 1 / 3,\n  onClose: null,\n  onChange: null,\n  className: '',\n  showIndex: true,\n  closeable: false,\n  closeIcon: 'clear',\n  asyncClose: false,\n  transition: 'van-fade',\n  getContainer: 'body',\n  startPosition: 0,\n  swipeDuration: 300,\n  showIndicators: false,\n  closeOnPopstate: true,\n  closeIconPosition: 'top-right'\n};\n\nvar initInstance = function initInstance() {\n  instance = new (Vue.extend(VueImagePreview))({\n    el: document.createElement('div')\n  });\n  document.body.appendChild(instance.$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.$once('input', function (show) {\n    instance.value = show;\n  });\n  instance.$once('closed', function () {\n    instance.images = [];\n  });\n\n  if (options.onClose) {\n    instance.$off('close');\n    instance.$once('close', options.onClose);\n  }\n\n  return instance;\n};\n\nImagePreview.Component = VueImagePreview;\n\nImagePreview.install = function () {\n  Vue.use(VueImagePreview);\n};\n\nexport default ImagePreview;","// Utils\nimport { bem, createComponent } from './shared'; // Mixins\n\nimport { PopupMixin } from '../mixins/popup';\nimport { TouchMixin } from '../mixins/touch';\nimport { BindEventMixin } from '../mixins/bind-event'; // Components\n\nimport Icon from '../icon';\nimport Swipe from '../swipe';\nimport ImagePreviewItem from './ImagePreviewItem';\nexport default createComponent({\n  mixins: [TouchMixin, PopupMixin({\n    skipToggleEvent: true\n  }), BindEventMixin(function (bind) {\n    bind(window, 'resize', this.resize, true);\n    bind(window, 'orientationchange', this.resize, true);\n  })],\n  props: {\n    className: null,\n    closeable: 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    overlay: {\n      type: Boolean,\n      default: true\n    },\n    minZoom: {\n      type: [Number, String],\n      default: 1 / 3\n    },\n    maxZoom: {\n      type: [Number, String],\n      default: 3\n    },\n    transition: {\n      type: String,\n      default: 'van-fade'\n    },\n    showIndex: {\n      type: Boolean,\n      default: true\n    },\n    swipeDuration: {\n      type: [Number, String],\n      default: 300\n    },\n    startPosition: {\n      type: [Number, String],\n      default: 0\n    },\n    overlayClass: {\n      type: String,\n      default: bem('overlay')\n    },\n    closeIcon: {\n      type: String,\n      default: 'clear'\n    },\n    closeOnPopstate: {\n      type: Boolean,\n      default: true\n    },\n    closeIconPosition: {\n      type: String,\n      default: 'top-right'\n    }\n  },\n  data: function data() {\n    return {\n      active: 0,\n      rootWidth: 0,\n      rootHeight: 0,\n      doubleClickTimer: null\n    };\n  },\n  mounted: function mounted() {\n    this.resize();\n  },\n  watch: {\n    startPosition: 'setActive',\n    value: function value(val) {\n      var _this = this;\n\n      if (val) {\n        this.setActive(+this.startPosition);\n        this.$nextTick(function () {\n          _this.resize();\n\n          _this.$refs.swipe.swipeTo(+_this.startPosition, {\n            immediate: true\n          });\n        });\n      } else {\n        this.$emit('close', {\n          index: this.active,\n          url: this.images[this.active]\n        });\n      }\n    }\n  },\n  methods: {\n    resize: function resize() {\n      if (this.$el && this.$el.getBoundingClientRect) {\n        var rect = this.$el.getBoundingClientRect();\n        this.rootWidth = rect.width;\n        this.rootHeight = rect.height;\n      }\n    },\n    emitClose: function emitClose() {\n      if (!this.asyncClose) {\n        this.$emit('input', false);\n      }\n    },\n    emitScale: function emitScale(args) {\n      this.$emit('scale', args);\n    },\n    setActive: function setActive(active) {\n      if (active !== this.active) {\n        this.active = active;\n        this.$emit('change', active);\n      }\n    },\n    genIndex: function genIndex() {\n      var h = this.$createElement;\n\n      if (this.showIndex) {\n        return h(\"div\", {\n          \"class\": bem('index')\n        }, [this.slots('index', {\n          index: this.active\n        }) || this.active + 1 + \" / \" + this.images.length]);\n      }\n    },\n    genCover: function genCover() {\n      var h = this.$createElement;\n      var cover = this.slots('cover');\n\n      if (cover) {\n        return h(\"div\", {\n          \"class\": bem('cover')\n        }, [cover]);\n      }\n    },\n    genImages: function genImages() {\n      var _this2 = this;\n\n      var h = this.$createElement;\n      return h(Swipe, {\n        \"ref\": \"swipe\",\n        \"attrs\": {\n          \"lazyRender\": true,\n          \"loop\": this.loop,\n          \"duration\": this.swipeDuration,\n          \"initialSwipe\": this.startPosition,\n          \"showIndicators\": this.showIndicators,\n          \"indicatorColor\": \"white\"\n        },\n        \"class\": bem('swipe'),\n        \"on\": {\n          \"change\": this.setActive\n        }\n      }, [this.images.map(function (image) {\n        return h(ImagePreviewItem, {\n          \"attrs\": {\n            \"src\": image,\n            \"show\": _this2.value,\n            \"active\": _this2.active,\n            \"maxZoom\": _this2.maxZoom,\n            \"minZoom\": _this2.minZoom,\n            \"rootWidth\": _this2.rootWidth,\n            \"rootHeight\": _this2.rootHeight\n          },\n          \"on\": {\n            \"scale\": _this2.emitScale,\n            \"close\": _this2.emitClose\n          }\n        });\n      })]);\n    },\n    genClose: function genClose() {\n      var h = this.$createElement;\n\n      if (this.closeable) {\n        return h(Icon, {\n          \"attrs\": {\n            \"role\": \"button\",\n            \"name\": this.closeIcon\n          },\n          \"class\": bem('close-icon', this.closeIconPosition),\n          \"on\": {\n            \"click\": this.emitClose\n          }\n        });\n      }\n    },\n    onClosed: function onClosed() {\n      this.$emit('closed');\n    },\n    // @exposed-api\n    swipeTo: function swipeTo(index, options) {\n      if (this.$refs.swipe) {\n        this.$refs.swipe.swipeTo(index, options);\n      }\n    }\n  },\n  render: function render() {\n    var h = arguments[0];\n    return h(\"transition\", {\n      \"attrs\": {\n        \"name\": this.transition\n      },\n      \"on\": {\n        \"afterLeave\": this.onClosed\n      }\n    }, [this.shouldRender ? 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()]) : null]);\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, inBrowser } 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    iconPrefix: String,\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: 'photo-fail'\n    },\n    loadingIcon: {\n      type: String,\n      default: 'photo'\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 && inBrowser) {\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            \"classPrefix\": this.iconPrefix\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            \"classPrefix\": this.iconPrefix\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(), this.slots()]);\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}\n\nfunction trimExtraChar(value, _char, regExp) {\n  var index = value.indexOf(_char);\n  var prefix = '';\n\n  if (index === -1) {\n    return value;\n  }\n\n  if (_char === '-' && index !== 0) {\n    return value.slice(0, index);\n  }\n\n  if (_char === '.' && value.match(/^(\\.|-\\.)/)) {\n    prefix = index ? '-0' : '0';\n  }\n\n  return prefix + value.slice(0, index + 1) + value.slice(index).replace(regExp, '');\n}\n\nexport function formatNumber(value, allowDot, allowMinus) {\n  if (allowDot === void 0) {\n    allowDot = true;\n  }\n\n  if (allowMinus === void 0) {\n    allowMinus = true;\n  }\n\n  if (allowDot) {\n    value = trimExtraChar(value, '.', /\\./g);\n  } else {\n    value = value.split('.')[0];\n  }\n\n  if (allowMinus) {\n    value = trimExtraChar(value, '-', /-/g);\n  } else {\n    value = value.replace(/-/, '');\n  }\n\n  var regExp = allowDot ? /[^-0-9.]/g : /[^-0-9]/g;\n  return value.replace(regExp, '');\n} // add num and avoid float number\n\nexport function addNumber(num1, num2) {\n  var cardinal = Math.pow(10, 10);\n  return Math.round((num1 + num2) * cardinal) / cardinal;\n}","function flattenVNodes(vnodes) {\n  var result = [];\n\n  function traverse(vnodes) {\n    vnodes.forEach(function (vnode) {\n      result.push(vnode);\n\n      if (vnode.componentInstance) {\n        traverse(vnode.componentInstance.$children.map(function (item) {\n          return item.$vnode;\n        }));\n      }\n\n      if (vnode.children) {\n        traverse(vnode.children);\n      }\n    });\n  }\n\n  traverse(vnodes);\n  return result;\n} // sort children instances by vnodes order\n\n\nexport function sortChildren(children, parent) {\n  var componentOptions = parent.$vnode.componentOptions;\n\n  if (!componentOptions || !componentOptions.children) {\n    return;\n  }\n\n  var vnodes = flattenVNodes(componentOptions.children);\n  children.sort(function (a, b) {\n    return vnodes.indexOf(a.$vnode) - vnodes.indexOf(b.$vnode);\n  });\n}","import { sortChildren } from '../utils/vnodes';\nexport function ChildrenMixin(_parent, options) {\n  var _inject, _computed;\n\n  if (options === void 0) {\n    options = {};\n  }\n\n  var indexKey = options.indexKey || 'index';\n  return {\n    inject: (_inject = {}, _inject[_parent] = {\n      default: null\n    }, _inject),\n    computed: (_computed = {\n      parent: function parent() {\n        if (this.disableBindRelation) {\n          return null;\n        }\n\n        return this[_parent];\n      }\n    }, _computed[indexKey] = function () {\n      this.bindRelation();\n\n      if (this.parent) {\n        return this.parent.children.indexOf(this);\n      }\n\n      return null;\n    }, _computed),\n    watch: {\n      disableBindRelation: function disableBindRelation(val) {\n        if (!val) {\n          this.bindRelation();\n        }\n      }\n    },\n    mounted: function mounted() {\n      this.bindRelation();\n    },\n    beforeDestroy: function beforeDestroy() {\n      var _this = this;\n\n      if (this.parent) {\n        this.parent.children = this.parent.children.filter(function (item) {\n          return item !== _this;\n        });\n      }\n    },\n    methods: {\n      bindRelation: function bindRelation() {\n        if (!this.parent || this.parent.children.indexOf(this) !== -1) {\n          return;\n        }\n\n        var children = [].concat(this.parent.children, [this]);\n        sortChildren(children, this.parent);\n        this.parent.children = children;\n      }\n    }\n  };\n}\nexport function ParentMixin(parent) {\n  return {\n    provide: function provide() {\n      var _ref;\n\n      return _ref = {}, _ref[parent] = this, _ref;\n    },\n    data: function data() {\n      return {\n        children: []\n      };\n    }\n  };\n}"],"sourceRoot":""}