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* 轮播组件\n * 因原生swiper受限，基于wxs重新实现，后期可以扩展更多丰富的功能\n * todo：无限循环，3D动效等\n */\nimport { SuperComponent, wxComponent, ControlInstance, useControl } from '../common/src/index';\nimport config from '../common/config';\nimport { DIRECTION, NavTypes } from './common/constants';\nimport props from './props';\n\nconst { prefix } = config;\nconst easings = {\n // 线性动画\n linear: 'linear',\n // 缓入动画\n // https://easings.net/#easeInCubic\n easeInCubic: 'cubic-bezier(0.32, 0, 0.67, 0)',\n // 缓出动画\n // https://easings.net/#easeOutCubic\n easeOutCubic: 'cubic-bezier(0.33, 1, 0.68, 1)',\n // 缓入缓出动画\n // https://easings.net/#easeInOutCubic\n easeInOutCubic: 'cubic-bezier(0.65, 0, 0.35, 1)',\n};\n\ninterface SwitchOpt {\n cycle?: boolean;\n source: 'autoplay' | 'touch' | 'nav';\n}\nconst defaultNavigation = {\n type: NavTypes.dots,\n minShowNum: 2,\n hasNavBtn: false,\n};\n\n@wxComponent()\nexport default class Swiper extends SuperComponent {\n externalClasses = [`${prefix}-class`];\n\n options = {\n 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direction } = this.properties;\n this.children = this.getRelationNodes('./swiper-item');\n this.children.forEach((item, index) => {\n item.setIndex(index, direction);\n });\n this.setData({\n total: this.children.length,\n });\n }\n\n /**\n * 初始化 swiper-nav\n */\n initNav() {\n const { _navigation } = this.data;\n if (_navigation) {\n // 启用内部导航器\n this.$nav = this.selectComponent('#swiperNav');\n } else {\n // 启用插槽嵌入的导航器\n this.$nav = this.getRelationNodes('./swiper-nav')?.[0];\n }\n }\n\n /**\n * 初始化也需要等待wxs完成，由wxs触发inited\n */\n inited() {\n this.updateNav(this.control.get());\n this.setData({\n inited: true,\n });\n }\n\n /**\n * 初始化current\n * 需要通过wxs更新位置，存在短暂延迟\n */\n initCurrent() {\n let index = +this.control.initValue;\n // 检查索引初始值超出范围\n index = Math.min(index, this.children.length - 1);\n index = Math.max(index, 0);\n this.control.set(index, {\n currentInited: true,\n // 默认为0时，不需要等待wxs计算位置，可直接显示\n inited: index === 0,\n ...this.calcOffset(index as any),\n });\n }\n\n play() {\n this.pause();\n const { interval } = this.properties;\n this.timer = setInterval(() => {\n const { inited } = this.data;\n if (!inited) return;\n this.next({ cycle: true, source: 'autoplay' });\n }, interval as any);\n }\n\n replay() {\n const { autoplay } = this.properties;\n autoplay && this.play();\n }\n\n pause() {\n this.timer && clearInterval(this.timer);\n this.timer = null;\n }\n\n /**\n * 跳转目标页\n * @param index 目标页索引\n * @param source 来源标记\n * @returns\n */\n goto(index: number, source: string) {\n if (this.control.get() === index) {\n this.update(index);\n return;\n }\n this.control.change(\n index,\n {\n current: index,\n source,\n },\n () => {\n this.update(index);\n },\n );\n }\n\n /**\n * 更新目标页\n * @param index 目标页索引（一页可能有多个item）\n * @returns\n */\n update(index: number, finish?) {\n if (!this.children) return;\n const len = this.children.length;\n let fixIndex = +index;\n if (Number.isNaN(fixIndex)) return;\n if (fixIndex <= 0) {\n fixIndex = 0;\n } else if (fixIndex 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