element-plus/es/components/infinite-scroll/src/index.mjs.map

A Component Library for Vue 3

{"version":3,"file":"index.mjs","names":[],"sources":["../../../../../../packages/components/infinite-scroll/src/index.ts"],"sourcesContent":["// @ts-nocheck\nimport { nextTick } from 'vue'\nimport { throttle } from 'lodash-unified'\nimport {\n  getOffsetTopDistance,\n  getScrollContainer,\n  isFunction,\n  throwError,\n} from '@element-plus/utils'\nimport { useDeprecated } from '@element-plus/hooks'\n\nimport type { ComponentPublicInstance, ObjectDirective } from 'vue'\n\nexport const SCOPE = 'ElInfiniteScroll'\nexport const CHECK_INTERVAL = 50\nexport const DEFAULT_DELAY = 200\nexport const DEFAULT_DISTANCE = 0\n\nconst attributes = {\n  delay: {\n    type: Number,\n    default: DEFAULT_DELAY,\n  },\n  distance: {\n    type: Number,\n    default: DEFAULT_DISTANCE,\n  },\n  disabled: {\n    type: Boolean,\n    default: false,\n  },\n  immediate: {\n    type: Boolean,\n    default: true,\n  },\n}\n\ntype Attrs = typeof attributes\ntype ScrollOptions = { [K in keyof Attrs]: Attrs[K]['default'] }\ntype InfiniteScrollCallback = () => void\ntype InfiniteScrollEl = HTMLElement & {\n  [SCOPE]: {\n    container: HTMLElement | Window\n    containerEl: HTMLElement\n    instance: ComponentPublicInstance\n    delay: number // export for test\n    lastScrollTop: number\n    cb: InfiniteScrollCallback\n    onScroll: () => void\n    observer?: MutationObserver\n  }\n}\n\nconst getScrollOptions = (\n  el: HTMLElement,\n  instance: ComponentPublicInstance\n): ScrollOptions => {\n  return Object.entries(attributes).reduce((acm, [name, option]) => {\n    const { type, default: defaultValue } = option\n    const attrVal = el.getAttribute(`infinite-scroll-${name}`)\n    let value = instance[attrVal] ?? attrVal ?? defaultValue\n    value = value === 'false' ? false : value\n    value = type(value)\n    acm[name] = Number.isNaN(value) ? defaultValue : value\n    return acm\n  }, {} as ScrollOptions)\n}\n\nconst destroyObserver = (el: InfiniteScrollEl) => {\n  const { observer } = el[SCOPE]\n\n  if (observer) {\n    observer.disconnect()\n    delete el[SCOPE].observer\n  }\n}\n\nconst handleScroll = (el: InfiniteScrollEl, cb: InfiniteScrollCallback) => {\n  const { container, containerEl, instance, observer, lastScrollTop } =\n    el[SCOPE]\n  const { disabled, distance } = getScrollOptions(el, instance)\n  const { clientHeight, scrollHeight, scrollTop } = containerEl\n  const delta = scrollTop - lastScrollTop\n\n  el[SCOPE].lastScrollTop = scrollTop\n\n  // trigger only if full check has done and not disabled and scroll down\n  if (observer || disabled || delta < 0) return\n\n  let shouldTrigger = false\n\n  if (container === el) {\n    shouldTrigger = scrollHeight - (clientHeight + scrollTop) <= distance\n  } else {\n    // get the scrollHeight since el might be visible overflow\n    const { clientTop, scrollHeight: height } = el\n    const offsetTop = getOffsetTopDistance(el, containerEl)\n    shouldTrigger =\n      scrollTop + clientHeight >= offsetTop + clientTop + height - distance\n  }\n\n  if (shouldTrigger) {\n    cb.call(instance)\n  }\n}\n\nfunction checkFull(el: InfiniteScrollEl, cb: InfiniteScrollCallback) {\n  const { containerEl, instance } = el[SCOPE]\n  const { disabled } = getScrollOptions(el, instance)\n\n  if (disabled || containerEl.clientHeight === 0) return\n\n  if (containerEl.scrollHeight <= containerEl.clientHeight) {\n    cb.call(instance)\n  } else {\n    destroyObserver(el)\n  }\n}\n\nconst InfiniteScroll: ObjectDirective<\n  InfiniteScrollEl,\n  InfiniteScrollCallback\n> = {\n  async mounted(el, binding) {\n    const { instance, value: cb } = binding\n\n    useDeprecated(\n      {\n        scope: SCOPE,\n        from: 'the directive v-infinite-scroll',\n        replacement: 'the el-scrollbar infinite scroll',\n        version: '3.0.0',\n        ref: 'https://element-plus.org/en-US/component/scrollbar#infinite-scroll',\n      },\n      true\n    )\n\n    if (!isFunction(cb)) {\n      throwError(SCOPE, \"'v-infinite-scroll' binding value must be a function\")\n    }\n\n    // ensure parentNode mounted\n    await nextTick()\n\n    const { delay, immediate } = getScrollOptions(el, instance)\n    const container = getScrollContainer(el, true)\n    const containerEl =\n      container === window\n        ? document.documentElement\n        : (container as HTMLElement)\n    const onScroll = throttle(handleScroll.bind(null, el, cb), delay)\n\n    if (!container) return\n\n    el[SCOPE] = {\n      instance,\n      container,\n      containerEl,\n      delay,\n      cb,\n      onScroll,\n      lastScrollTop: containerEl.scrollTop,\n    }\n\n    if (immediate) {\n      const observer = new MutationObserver(\n        throttle(checkFull.bind(null, el, cb), CHECK_INTERVAL)\n      )\n      el[SCOPE].observer = observer\n      observer.observe(el, { childList: true, subtree: true })\n      checkFull(el, cb)\n    }\n\n    container.addEventListener('scroll', onScroll)\n  },\n  unmounted(el) {\n    if (!el[SCOPE]) return\n    const { container, onScroll } = el[SCOPE]\n\n    container?.removeEventListener('scroll', onScroll)\n    destroyObserver(el)\n  },\n  async updated(el) {\n    if (!el[SCOPE]) {\n      await nextTick()\n    } else {\n      const { containerEl, cb, observer } = el[SCOPE]\n      if (containerEl.clientHeight && observer) {\n        checkFull(el, cb)\n      }\n    }\n  },\n}\n\nexport default InfiniteScroll\n"],"mappings":";;;;;;;;;AAaA,MAAa,QAAQ;AACrB,MAAa,iBAAiB;AAC9B,MAAa,gBAAgB;AAC7B,MAAa,mBAAmB;AAEhC,MAAM,aAAa;CACjB,OAAO;EACL,MAAM;EACN,SAAS;EACV;CACD,UAAU;EACR,MAAM;EACN,SAAS;EACV;CACD,UAAU;EACR,MAAM;EACN,SAAS;EACV;CACD,WAAW;EACT,MAAM;EACN,SAAS;EACV;CACF;AAkBD,MAAM,oBACJ,IACA,aACkB;AAClB,QAAO,OAAO,QAAQ,WAAW,CAAC,QAAQ,KAAK,CAAC,MAAM,YAAY;EAChE,MAAM,EAAE,MAAM,SAAS,iBAAiB;EACxC,MAAM,UAAU,GAAG,aAAa,mBAAmB,OAAO;EAC1D,IAAI,QAAQ,SAAS,YAAY,WAAW;AAC5C,UAAQ,UAAU,UAAU,QAAQ;AACpC,UAAQ,KAAK,MAAM;AACnB,MAAI,QAAQ,OAAO,MAAM,MAAM,GAAG,eAAe;AACjD,SAAO;IACN,EAAE,CAAkB;;AAGzB,MAAM,mBAAmB,OAAyB;CAChD,MAAM,EAAE,aAAa,GAAG;AAExB,KAAI,UAAU;AACZ,WAAS,YAAY;AACrB,SAAO,GAAG,OAAO;;;AAIrB,MAAM,gBAAgB,IAAsB,OAA+B;CACzE,MAAM,EAAE,WAAW,aAAa,UAAU,UAAU,kBAClD,GAAG;CACL,MAAM,EAAE,UAAU,aAAa,iBAAiB,IAAI,SAAS;CAC7D,MAAM,EAAE,cAAc,cAAc,cAAc;CAClD,MAAM,QAAQ,YAAY;AAE1B,IAAG,OAAO,gBAAgB;AAG1B,KAAI,YAAY,YAAY,QAAQ,EAAG;CAEvC,IAAI,gBAAgB;AAEpB,KAAI,cAAc,GAChB,iBAAgB,gBAAgB,eAAe,cAAc;MACxD;EAEL,MAAM,EAAE,WAAW,cAAc,WAAW;EAC5C,MAAM,YAAY,qBAAqB,IAAI,YAAY;AACvD,kBACE,YAAY,gBAAgB,YAAY,YAAY,SAAS;;AAGjE,KAAI,cACF,IAAG,KAAK,SAAS;;AAIrB,SAAS,UAAU,IAAsB,IAA4B;CACnE,MAAM,EAAE,aAAa,aAAa,GAAG;CACrC,MAAM,EAAE,aAAa,iBAAiB,IAAI,SAAS;AAEnD,KAAI,YAAY,YAAY,iBAAiB,EAAG;AAEhD,KAAI,YAAY,gBAAgB,YAAY,aAC1C,IAAG,KAAK,SAAS;KAEjB,iBAAgB,GAAG;;AAIvB,MAAM,iBAGF;CACF,MAAM,QAAQ,IAAI,SAAS;EACzB,MAAM,EAAE,UAAU,OAAO,OAAO;AAEhC,gBACE;GACE,OAAO;GACP,MAAM;GACN,aAAa;GACb,SAAS;GACT,KAAK;GACN,EACD,KACD;AAED,MAAI,CAAC,WAAW,GAAG,CACjB,YAAW,OAAO,uDAAuD;AAI3E,QAAM,UAAU;EAEhB,MAAM,EAAE,OAAO,cAAc,iBAAiB,IAAI,SAAS;EAC3D,MAAM,YAAY,mBAAmB,IAAI,KAAK;EAC9C,MAAM,cACJ,cAAc,SACV,SAAS,kBACR;EACP,MAAM,WAAW,SAAS,aAAa,KAAK,MAAM,IAAI,GAAG,EAAE,MAAM;AAEjE,MAAI,CAAC,UAAW;AAEhB,KAAG,SAAS;GACV;GACA;GACA;GACA;GACA;GACA;GACA,eAAe,YAAY;GAC5B;AAED,MAAI,WAAW;GACb,MAAM,WAAW,IAAI,iBACnB,SAAS,UAAU,KAAK,MAAM,IAAI,GAAG,EAAE,eAAe,CACvD;AACD,MAAG,OAAO,WAAW;AACrB,YAAS,QAAQ,IAAI;IAAE,WAAW;IAAM,SAAS;IAAM,CAAC;AACxD,aAAU,IAAI,GAAG;;AAGnB,YAAU,iBAAiB,UAAU,SAAS;;CAEhD,UAAU,IAAI;AACZ,MAAI,CAAC,GAAG,OAAQ;EAChB,MAAM,EAAE,WAAW,aAAa,GAAG;AAEnC,aAAW,oBAAoB,UAAU,SAAS;AAClD,kBAAgB,GAAG;;CAErB,MAAM,QAAQ,IAAI;AAChB,MAAI,CAAC,GAAG,OACN,OAAM,UAAU;OACX;GACL,MAAM,EAAE,aAAa,IAAI,aAAa,GAAG;AACzC,OAAI,YAAY,gBAAgB,SAC9B,WAAU,IAAI,GAAG;;;CAIxB"}