design-react-kit/dist/NavScroll/index.cjs.map

Componenti React per Bootstrap 5

{"version":3,"sources":["../../src/NavScroll/index.ts","../../src/NavScroll/useNavScroll.ts","../../src/NavScroll/debounce.ts","../../src/NavScroll/useSizeDetector.ts","../../node_modules/uuid/dist/esm-node/rng.js","../../node_modules/uuid/dist/esm-node/regex.js","../../node_modules/uuid/dist/esm-node/validate.js","../../node_modules/uuid/dist/esm-node/stringify.js","../../node_modules/uuid/dist/esm-node/v4.js"],"sourcesContent":["/*\n * This work derives from the React Use Navscroll library\n * Released under the MIT license by Marco Liberati\n * Code: https://github.com/dej611/react-use-navscroll\n */\n/* @internal */\nexport type { ChangesType, RegisterOptions, useNavScrollArgs, useNavScrollResult } from './types';\n\nexport { useNavScroll } from './useNavScroll';\n","/* eslint-disable @typescript-eslint/no-explicit-any */\n/*--------------------------------------------------------------------------\n * This work derives from the React Use Navscroll library\n * Released under the MIT license by Marco Liberati (@dej611)\n * Code: https://github.com/dej611/react-use-navscroll\n * --------------------------------------------------------------------------\n * Parts of this code has been modified using Bootstrap Italia source code\n * --------------------------------------------------------------------------\n * Bootstrap Italia (https://italia.github.io/bootstrap-italia/)\n * Authors: https://github.com/italia/bootstrap-italia/blob/main/AUTHORS\n * License: BSD-3-Clause (https://github.com/italia/bootstrap-italia/blob/main/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nimport { createRef, useCallback, useEffect, useMemo, useRef, useState } from 'react';\nimport { debounce } from './debounce';\nimport type { useNavScrollArgs, useNavScrollResult, TrackedElement } from './types';\nimport { useSizeDetector } from './useSizeDetector';\n\nimport { v4 as uuidv4 } from 'uuid';\n\nlet ticking: boolean = false;\nlet callbacks: any[] = [];\n\nclass ScrollCallback {\n  private _callback: any;\n  id: string;\n  constructor(id: string, callback: any) {\n    this.id = id;\n    this._callback = callback;\n  }\n\n  //Public\n  dispose() {\n    removeCallBack(this.id);\n  }\n\n  //Private\n  _execute(data: any) {\n    this._callback(data);\n  }\n}\n\nconst removeCallBack = (id: string) => {\n  callbacks = callbacks.filter((cb) => cb.id !== id);\n};\n\nconst onDocumentScroll = (callback: any) => {\n  if (typeof document === 'undefined') {\n    return;\n  }\n  if (!callbacks.length) {\n    if (typeof window !== 'undefined' && typeof document !== 'undefined') {\n      document.addEventListener('scroll', (evt) => {\n        if (!ticking) {\n          window.requestAnimationFrame(() => {\n            callbacks.forEach((cbObj) => cbObj.cb._execute(evt));\n            ticking = false;\n          });\n          ticking = true;\n        }\n      });\n    }\n  }\n\n  if (typeof callback === 'function') {\n    const newCb = new ScrollCallback(uuidv4(), callback);\n    callbacks.push({\n      id: newCb.id,\n      cb: newCb\n    });\n    return newCb;\n  }\n\n  console.error('[onDocumentScroll] the provided data has to be of type function');\n  return null;\n};\n\nconst hasWindow = typeof window !== 'undefined';\nconst REGISTER_DELAY = 50;\n\nfunction resolveHierarchyIds(id: string, lookup: Record<string, string | undefined>) {\n  const newActiveIds = [id];\n  let lastId: string | undefined = newActiveIds[0];\n  while (lastId != null && lookup[lastId] != null) {\n    newActiveIds.push(lookup[lastId] as string);\n    lastId = lookup[lastId];\n  }\n  // return a list from parent to current child\n  return newActiveIds.reverse();\n}\n/**\n * This is the main hook: use it in a react function component to track\n * the state of the passed ids. The function accepts an initial configuration\n * of type `useNavScrollArgs` to customize the behaviour.\n */\nexport function useNavScroll(args: useNavScrollArgs = {}): useNavScrollResult {\n  const { onChange, root, offset = 50, isHorizontal = false } = args;\n  const els = useRef<TrackedElement[]>([]);\n  const [counter, setCounter] = useState(0);\n  const [forceRecompute, setForceRecompute] = useState(false);\n  const [activeId, updateActiveId] = useState<string | null>(null);\n  const [percentageValue, setPercentageValue] = useState(0);\n\n  const { targetSize, useViewport } = useSizeDetector({\n    root,\n    isHorizontal,\n    onChange,\n    activeId,\n    setForceRecompute,\n    updateActiveId,\n    hasWindow\n  });\n\n  const observerMargin = Math.floor((targetSize * offset) / 100) || 1;\n  const observerOptions = useMemo(() => {\n    const topMargin = observerMargin % 2 === 1 ? observerMargin - 1 : observerMargin;\n    const bottomMargin = targetSize - observerMargin;\n    return {\n      root: useViewport ? null : root,\n      rootMargin: isHorizontal\n        ? `0px ${-topMargin}px 0px ${-bottomMargin}px`\n        : `${-topMargin}px 0px ${-bottomMargin}px 0px`\n    };\n  }, [root, targetSize, observerMargin, isHorizontal, useViewport]);\n\n  const elsLookup = useMemo(() => {\n    const lookup: Record<string, string | undefined> = {};\n    for (const { id, parent } of els.current) {\n      lookup[id] = parent;\n    }\n    return lookup;\n  }, [counter]);\n  const activeIds = useMemo(() => (activeId ? resolveHierarchyIds(activeId, elsLookup) : []), [activeId, elsLookup]);\n\n  const activeLookups = useMemo(() => new Set(activeIds), [activeIds]);\n  useEffect(() => {\n    if (!hasWindow) {\n      return;\n    }\n    const _onScroll = () => {\n      let intersectionId = null;\n      for (let k = 0; k < els.current.length; k++) {\n        const entry = els.current[k].ref.current;\n        const min = entry?.getBoundingClientRect().top ? entry?.getBoundingClientRect().top : 0;\n        if (!min) {\n          break;\n        }\n        if (min > 0 && k > 0) {\n          const totEls =\n            root?.previousSibling?.firstChild?.parentNode?.querySelectorAll('.it-navscroll-wrapper .nav-link').length ||\n            1;\n          setPercentageValue((k / (totEls / 2)) * 100);\n          intersectionId = els.current[k - 1].ref.current?.id;\n          break;\n        }\n      }\n      if (intersectionId != null) {\n        updateActiveId(intersectionId);\n        if (onChange) {\n          const diffIds = {\n            added: intersectionId,\n            removed: activeId\n          };\n          onChange(diffIds);\n        }\n      }\n    };\n\n    onDocumentScroll(_onScroll);\n\n    setTimeout(() => {\n      _onScroll();\n    }, 300);\n  }, [\n    activeIds,\n    updateActiveId,\n    els,\n    elsLookup,\n    onChange,\n    activeLookups,\n    activeId,\n    observerOptions,\n    isHorizontal,\n    root,\n    forceRecompute\n  ]);\n\n  const refresh = useCallback(\n    debounce(() => {\n      setCounter(counter + 1);\n    }, REGISTER_DELAY),\n    [counter]\n  );\n\n  const register = useCallback(\n    (id: string, options: any = {}) => {\n      if (!hasWindow) {\n        return { id, ref: null };\n      }\n      const alreadyRegistered = id in elsLookup;\n      const entry = alreadyRegistered ? els.current.find(({ id: existingId }) => existingId === id) : options;\n      const ref = (entry && entry.ref) || createRef();\n\n      if (!alreadyRegistered) {\n        els.current = [...els.current, { id, ref, parent: options.parent }];\n        refresh();\n      }\n      return { id, ref };\n    },\n    [counter]\n  );\n\n  const unregister = useCallback(\n    (idToUnregister: string) => {\n      els.current = els.current.filter(({ id }) => id !== idToUnregister);\n    },\n    [counter]\n  );\n\n  const isActive = useCallback((id: string) => activeLookups.has(id), [activeLookups]);\n  const percentage = useMemo(() => percentageValue, [percentageValue]);\n\n  const getActiveRef = useCallback(() => {\n    const entry = els.current.find(({ id }) => id === activeId);\n    return entry ? entry.ref : null;\n  }, [activeId]);\n\n  return {\n    percentage,\n    register,\n    unregister,\n    activeIds,\n    isActive,\n    getActiveRef\n  };\n}\n","/*\n * This work derives from the React Use Navscroll library\n * Released under the MIT license by Marco Liberati\n * Code: https://github.com/dej611/react-use-navscroll\n */\n\nexport const debounce = (callback: CallableFunction, wait: number) => {\n  let timeoutId: NodeJS.Timeout;\n  return (...args: unknown[]) => {\n    clearTimeout(timeoutId);\n    timeoutId = setTimeout(() => {\n      callback(...args);\n    }, wait);\n  };\n};\n","/*\n * This work derives from the React Use Navscroll library\n * Released under the MIT license by Marco Liberati\n * Code: https://github.com/dej611/react-use-navscroll\n */\n\nimport { useCallback, useEffect, useState } from 'react';\nimport { debounce } from './debounce';\nimport { useNavScrollArgs } from './types';\n\nconst DEFAULT_DELAY = 150;\n\nexport type useSizeDetectorArgs = Omit<useNavScrollArgs, 'offset'> & {\n  activeId: string | null;\n  hasWindow: boolean;\n  setForceRecompute: (force: boolean) => void;\n  updateActiveId: (id: string | null) => void;\n};\n\nexport const useSizeDetector = ({\n  root,\n  isHorizontal,\n  activeId,\n  onChange,\n  setForceRecompute,\n  updateActiveId,\n  hasWindow\n}: useSizeDetectorArgs) => {\n  const [targetSize, setTargetSize] = useState<number>(1);\n\n  const useViewport =\n    root == null ||\n    (hasWindow && (isHorizontal ? window.innerWidth < root.clientWidth : window.innerHeight < root.clientHeight));\n\n  const scrollEnd = useCallback(\n    debounce(() => {\n      setForceRecompute(true);\n    }, DEFAULT_DELAY),\n    [setForceRecompute]\n  );\n\n  useEffect(() => {\n    if (!hasWindow) {\n      return;\n    }\n    let observer: IntersectionObserver | null = null;\n\n    const resizeWindowHandler = () => {\n      setTimeout(() => {\n        setTargetSize(isHorizontal ? window.innerWidth : window.innerHeight);\n      }, DEFAULT_DELAY);\n    };\n\n    const resizeElementHandler: IntersectionObserverCallback = (entries) => {\n      const [entry] = entries;\n      if (!useViewport) {\n        setTargetSize(isHorizontal ? entry.boundingClientRect.width : entry.boundingClientRect.height);\n      }\n\n      if (entry.intersectionRatio === 0) {\n        if (activeId != null) {\n          updateActiveId(null);\n          if (onChange) {\n            onChange({\n              added: null,\n              removed: activeId\n            });\n          }\n        }\n      }\n    };\n\n    addEventListener('scroll', scrollEnd);\n    if (useViewport) {\n      setTargetSize(isHorizontal ? window.innerWidth : window.innerHeight);\n      addEventListener('resize', resizeWindowHandler);\n    }\n    if (root) {\n      observer = new IntersectionObserver(resizeElementHandler);\n      observer.observe(root);\n    }\n    return () => {\n      if (observer) {\n        observer.disconnect();\n      }\n      removeEventListener('resize', resizeWindowHandler);\n      removeEventListener('scroll', scrollEnd);\n    };\n  }, [root, isHorizontal, activeId, onChange, useViewport, scrollEnd, hasWindow, updateActiveId]);\n  return { targetSize, useViewport };\n};\n","import crypto from 'crypto';\nconst rnds8Pool = new Uint8Array(256); // # of random values to pre-allocate\n\nlet poolPtr = rnds8Pool.length;\nexport default function rng() {\n  if (poolPtr > rnds8Pool.length - 16) {\n    crypto.randomFillSync(rnds8Pool);\n    poolPtr = 0;\n  }\n\n  return rnds8Pool.slice(poolPtr, poolPtr += 16);\n}","export default /^(?:[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}|00000000-0000-0000-0000-000000000000)$/i;","import REGEX from './regex.js';\n\nfunction validate(uuid) {\n  return typeof uuid === 'string' && REGEX.test(uuid);\n}\n\nexport default validate;","import validate from './validate.js';\n/**\n * Convert array of 16 byte values to UUID string format of the form:\n * XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX\n */\n\nconst byteToHex = [];\n\nfor (let i = 0; i < 256; ++i) {\n  byteToHex.push((i + 0x100).toString(16).substr(1));\n}\n\nfunction stringify(arr, offset = 0) {\n  // Note: Be careful editing this code!  It's been tuned for performance\n  // and works in ways you may not expect. See https://github.com/uuidjs/uuid/pull/434\n  const uuid = (byteToHex[arr[offset + 0]] + byteToHex[arr[offset + 1]] + byteToHex[arr[offset + 2]] + byteToHex[arr[offset + 3]] + '-' + byteToHex[arr[offset + 4]] + byteToHex[arr[offset + 5]] + '-' + byteToHex[arr[offset + 6]] + byteToHex[arr[offset + 7]] + '-' + byteToHex[arr[offset + 8]] + byteToHex[arr[offset + 9]] + '-' + byteToHex[arr[offset + 10]] + byteToHex[arr[offset + 11]] + byteToHex[arr[offset + 12]] + byteToHex[arr[offset + 13]] + byteToHex[arr[offset + 14]] + byteToHex[arr[offset + 15]]).toLowerCase(); // Consistency check for valid UUID.  If this throws, it's likely due to one\n  // of the following:\n  // - One or more input array values don't map to a hex octet (leading to\n  // \"undefined\" in the uuid)\n  // - Invalid input values for the RFC `version` or `variant` fields\n\n  if (!validate(uuid)) {\n    throw TypeError('Stringified UUID is invalid');\n  }\n\n  return uuid;\n}\n\nexport default stringify;","import rng from './rng.js';\nimport stringify from './stringify.js';\n\nfunction v4(options, buf, offset) {\n  options = options || {};\n  const rnds = options.random || (options.rng || rng)(); // Per 4.4, set bits for version and `clock_seq_hi_and_reserved`\n\n  rnds[6] = rnds[6] & 0x0f | 0x40;\n  rnds[8] = rnds[8] & 0x3f | 0x80; // Copy bytes to buffer, if provided\n\n  if (buf) {\n    offset = offset || 0;\n\n    for (let i = 0; i < 16; ++i) {\n      buf[offset + i] = rnds[i];\n    }\n\n    return buf;\n  }\n\n  return stringify(rnds);\n}\n\nexport default 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