|
| 1 | +import clsx from 'clsx'; |
| 2 | +import React, { useEffect, useCallback, useState, useMemo } from 'react'; |
| 3 | +import type { DropdownProps } from './types'; |
| 4 | +import { DropdownContext } from './context'; |
| 5 | +import { usePopper } from 'react-popper'; |
| 6 | + |
| 7 | +const MDBDropdown: React.FC<DropdownProps> = ({ |
| 8 | + className, |
| 9 | + tag: Tag, |
| 10 | + group, |
| 11 | + isOpen, |
| 12 | + children, |
| 13 | + dropup, |
| 14 | + dropright, |
| 15 | + dropleft, |
| 16 | + options, |
| 17 | + animation, |
| 18 | + placement, |
| 19 | + ...props |
| 20 | +}): JSX.Element => { |
| 21 | + const [isOpenState, setIsOpenState] = useState<undefined | boolean | any>(isOpen); |
| 22 | + const [isFadeIn, setIsFadeIn] = useState(false); |
| 23 | + const [isFadeOut, setIsFadeOut] = useState(false); |
| 24 | + const [referenceElement, setReferenceElement] = useState<HTMLElement>(); |
| 25 | + const [popperElement, setPopperElement] = useState<HTMLElement>(); |
| 26 | + const [isPlacement, setIsPlacement] = useState(placement); |
| 27 | + // eslint-disable-next-line prefer-const |
| 28 | + let [activeIndex, setActiveIndex] = useState<number>(-1); |
| 29 | + const [countLength, setCountLength] = useState<number>(-1); |
| 30 | + |
| 31 | + useEffect(() => { |
| 32 | + if (dropup) { |
| 33 | + setIsPlacement('top-start'); |
| 34 | + } else if (dropright) { |
| 35 | + setIsPlacement('right-start'); |
| 36 | + } else if (dropleft) { |
| 37 | + setIsPlacement('left-start'); |
| 38 | + } else { |
| 39 | + setIsPlacement('bottom-start'); |
| 40 | + } |
| 41 | + }, [dropleft, dropright, dropup]); |
| 42 | + |
| 43 | + const { styles, attributes } = usePopper(referenceElement, popperElement, { |
| 44 | + placement: isPlacement, |
| 45 | + ...options, |
| 46 | + }); |
| 47 | + |
| 48 | + const classes = clsx( |
| 49 | + group ? 'btn-group' : 'dropdown', |
| 50 | + dropup && 'dropup', |
| 51 | + dropright && 'dropend', |
| 52 | + dropleft && 'dropstart', |
| 53 | + className |
| 54 | + ); |
| 55 | + |
| 56 | + const handleOpenClose = (): void => setIsOpenState(!isOpenState); |
| 57 | + const handleClose = (): void => setIsOpenState(false); |
| 58 | + const getCounter = (el: any): void => setCountLength(el); |
| 59 | + |
| 60 | + const handleClickOutside = useCallback( |
| 61 | + (event: MouseEvent) => { |
| 62 | + if (popperElement && popperElement !== null && isOpenState && referenceElement && referenceElement !== null) { |
| 63 | + if (!popperElement.contains(event.target as Node) && !referenceElement.contains(event.target as Node)) { |
| 64 | + setIsOpenState(false); |
| 65 | + } |
| 66 | + } |
| 67 | + }, |
| 68 | + [isOpenState, popperElement, referenceElement] |
| 69 | + ); |
| 70 | + |
| 71 | + useEffect(() => { |
| 72 | + document.addEventListener('mousedown', handleClickOutside); |
| 73 | + return () => { |
| 74 | + document.removeEventListener('mousedown', handleClickOutside); |
| 75 | + }; |
| 76 | + }, [handleClickOutside]); |
| 77 | + |
| 78 | + useEffect(() => { |
| 79 | + if (isOpenState) { |
| 80 | + setActiveIndex(countLength); |
| 81 | + } |
| 82 | + }, [countLength, isOpenState]); |
| 83 | + |
| 84 | + useMemo(() => { |
| 85 | + let timer: ReturnType<typeof setTimeout>; |
| 86 | + let secondTimer: ReturnType<typeof setTimeout>; |
| 87 | + |
| 88 | + if (isOpenState) { |
| 89 | + setIsFadeIn(true); |
| 90 | + |
| 91 | + timer = setTimeout(() => { |
| 92 | + setIsFadeIn(false); |
| 93 | + }, 300); |
| 94 | + } else { |
| 95 | + setIsFadeOut(true); |
| 96 | + |
| 97 | + secondTimer = setTimeout(() => { |
| 98 | + setIsFadeOut(false); |
| 99 | + }, 300); |
| 100 | + } |
| 101 | + return () => { |
| 102 | + clearTimeout(timer); |
| 103 | + clearTimeout(secondTimer); |
| 104 | + }; |
| 105 | + }, [isOpenState]); |
| 106 | + |
| 107 | + return ( |
| 108 | + <DropdownContext.Provider |
| 109 | + value={{ |
| 110 | + animation, |
| 111 | + activeIndex, |
| 112 | + handleClose, |
| 113 | + handleOpenClose, |
| 114 | + isOpenState, |
| 115 | + setReferenceElement, |
| 116 | + setPopperElement, |
| 117 | + styles, |
| 118 | + attributes, |
| 119 | + animatedFadeIn: isFadeIn, |
| 120 | + animatedFadeOut: isFadeOut, |
| 121 | + getCount: (el) => getCounter(el), |
| 122 | + }} |
| 123 | + > |
| 124 | + <Tag className={classes} {...props}> |
| 125 | + {children} |
| 126 | + </Tag> |
| 127 | + </DropdownContext.Provider> |
| 128 | + ); |
| 129 | +}; |
| 130 | + |
| 131 | +MDBDropdown.defaultProps = { |
| 132 | + tag: 'div', |
| 133 | + animation: true, |
| 134 | +}; |
| 135 | + |
| 136 | +export default MDBDropdown; |
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