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| 1 | +import React, { Component } from 'react'; |
| 2 | +import PropTypes from 'prop-types'; |
| 3 | +import Calendar from '../Calendar'; |
| 4 | +import { rangeShape } from '../DayCell'; |
| 5 | +import { findNextRangeIndex, generateStyles } from '../../utils'; |
| 6 | +import { isBefore, differenceInCalendarDays, addDays, min, isWithinInterval, max } from 'date-fns'; |
| 7 | +import classnames from 'classnames'; |
| 8 | +import coreStyles from '../../styles'; |
| 9 | + |
| 10 | +class DateRange extends Component { |
| 11 | + constructor(props, context) { |
| 12 | + super(props, context); |
| 13 | + this.setSelection = this.setSelection.bind(this); |
| 14 | + this.handleRangeFocusChange = this.handleRangeFocusChange.bind(this); |
| 15 | + this.updatePreview = this.updatePreview.bind(this); |
| 16 | + this.calcNewSelection = this.calcNewSelection.bind(this); |
| 17 | + this.state = { |
| 18 | + focusedRange: props.initialFocusedRange || [findNextRangeIndex(props.ranges), 0], |
| 19 | + preview: null, |
| 20 | + }; |
| 21 | + this.styles = generateStyles([coreStyles, props.classNames]); |
| 22 | + } |
| 23 | + calcNewSelection(value, isSingleValue = true) { |
| 24 | + const focusedRange = this.props.focusedRange || this.state.focusedRange; |
| 25 | + const { ranges, onChange, maxDate, moveRangeOnFirstSelection, disabledDates } = this.props; |
| 26 | + const focusedRangeIndex = focusedRange[0]; |
| 27 | + const selectedRange = ranges[focusedRangeIndex]; |
| 28 | + if (!selectedRange || !onChange) return {}; |
| 29 | + |
| 30 | + let { startDate, endDate } = selectedRange; |
| 31 | + if (!endDate) endDate = new Date(startDate); |
| 32 | + let nextFocusRange; |
| 33 | + if (!isSingleValue) { |
| 34 | + startDate = value.startDate; |
| 35 | + endDate = value.endDate; |
| 36 | + } else if (focusedRange[1] === 0) { |
| 37 | + // startDate selection |
| 38 | + const dayOffset = differenceInCalendarDays(endDate, startDate); |
| 39 | + startDate = value; |
| 40 | + endDate = moveRangeOnFirstSelection ? addDays(value, dayOffset) : value; |
| 41 | + if (maxDate) endDate = min([endDate, maxDate]); |
| 42 | + nextFocusRange = [focusedRange[0], 1]; |
| 43 | + } else { |
| 44 | + endDate = value; |
| 45 | + } |
| 46 | + |
| 47 | + // reverse dates if startDate before endDate |
| 48 | + let isStartDateSelected = focusedRange[1] === 0; |
| 49 | + if (isBefore(endDate, startDate)) { |
| 50 | + isStartDateSelected = !isStartDateSelected; |
| 51 | + [startDate, endDate] = [endDate, startDate]; |
| 52 | + } |
| 53 | + |
| 54 | + const inValidDatesWithinRange = disabledDates.filter(disabledDate => |
| 55 | + isWithinInterval(disabledDate, { |
| 56 | + start: startDate, |
| 57 | + end: endDate, |
| 58 | + }) |
| 59 | + ); |
| 60 | + |
| 61 | + if (inValidDatesWithinRange.length > 0) { |
| 62 | + if (isStartDateSelected) { |
| 63 | + startDate = addDays(max(inValidDatesWithinRange), 1); |
| 64 | + } else { |
| 65 | + endDate = addDays(min(inValidDatesWithinRange), -1); |
| 66 | + } |
| 67 | + } |
| 68 | + |
| 69 | + if (!nextFocusRange) { |
| 70 | + const nextFocusRangeIndex = findNextRangeIndex(this.props.ranges, focusedRange[0]); |
| 71 | + nextFocusRange = [nextFocusRangeIndex, 0]; |
| 72 | + } |
| 73 | + return { |
| 74 | + wasValid: !(inValidDatesWithinRange.length > 0), |
| 75 | + range: { startDate, endDate }, |
| 76 | + nextFocusRange: nextFocusRange, |
| 77 | + }; |
| 78 | + } |
| 79 | + setSelection(value, isSingleValue) { |
| 80 | + const { onChange, ranges, onRangeFocusChange } = this.props; |
| 81 | + const focusedRange = this.props.focusedRange || this.state.focusedRange; |
| 82 | + const focusedRangeIndex = focusedRange[0]; |
| 83 | + const selectedRange = ranges[focusedRangeIndex]; |
| 84 | + if (!selectedRange) return; |
| 85 | + const newSelection = this.calcNewSelection(value, isSingleValue); |
| 86 | + onChange({ |
| 87 | + [selectedRange.key || `range${focusedRangeIndex + 1}`]: { |
| 88 | + ...selectedRange, |
| 89 | + ...newSelection.range, |
| 90 | + }, |
| 91 | + }); |
| 92 | + this.setState({ |
| 93 | + focusedRange: newSelection.nextFocusRange, |
| 94 | + preview: null, |
| 95 | + }); |
| 96 | + onRangeFocusChange && onRangeFocusChange(newSelection.nextFocusRange); |
| 97 | + } |
| 98 | + handleRangeFocusChange(focusedRange) { |
| 99 | + this.setState({ focusedRange }); |
| 100 | + this.props.onRangeFocusChange && this.props.onRangeFocusChange(focusedRange); |
| 101 | + } |
| 102 | + updatePreview(val) { |
| 103 | + if (!val) { |
| 104 | + this.setState({ preview: null }); |
| 105 | + return; |
| 106 | + } |
| 107 | + const { rangeColors, ranges } = this.props; |
| 108 | + const focusedRange = this.props.focusedRange || this.state.focusedRange; |
| 109 | + const color = ranges[focusedRange[0]].color || rangeColors[focusedRange[0]] || color; |
| 110 | + this.setState({ preview: { ...val.range, color } }); |
| 111 | + } |
| 112 | + render() { |
| 113 | + return ( |
| 114 | + <Calendar |
| 115 | + focusedRange={this.state.focusedRange} |
| 116 | + onRangeFocusChange={this.handleRangeFocusChange} |
| 117 | + preview={this.state.preview} |
| 118 | + onPreviewChange={value => { |
| 119 | + this.updatePreview(value ? this.calcNewSelection(value) : null); |
| 120 | + }} |
| 121 | + {...this.props} |
| 122 | + displayMode="dateRange" |
| 123 | + className={classnames(this.styles.dateRangeWrapper, this.props.className)} |
| 124 | + onChange={this.setSelection} |
| 125 | + updateRange={val => this.setSelection(val, false)} |
| 126 | + ref={target => { |
| 127 | + this.calendar = target; |
| 128 | + }} |
| 129 | + /> |
| 130 | + ); |
| 131 | + } |
| 132 | +} |
| 133 | + |
| 134 | +DateRange.defaultProps = { |
| 135 | + classNames: {}, |
| 136 | + ranges: [], |
| 137 | + moveRangeOnFirstSelection: false, |
| 138 | + rangeColors: ['#3d91ff', '#3ecf8e', '#fed14c'], |
| 139 | + disabledDates: [], |
| 140 | +}; |
| 141 | + |
| 142 | +DateRange.propTypes = { |
| 143 | + ...Calendar.propTypes, |
| 144 | + onChange: PropTypes.func, |
| 145 | + onRangeFocusChange: PropTypes.func, |
| 146 | + className: PropTypes.string, |
| 147 | + ranges: PropTypes.arrayOf(rangeShape), |
| 148 | + moveRangeOnFirstSelection: PropTypes.bool, |
| 149 | +}; |
| 150 | + |
| 151 | +export default DateRange; |
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