# All files / utils bandHover.ts

10.91% Statements 6/55
0% Branches 0/26
0% Functions 0/9
10.91% Lines 6/55

Press n or j to go to the next uncovered block, b, p or k for the previous block.

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127

    1x

    1x
    1x

    1x

    1x

    1x

     import {NumericColumnData, BandLineMap, LineData, Scale, Table} from '../types'
    // import {LineData, } from '../types'
    import {isDefined} from './isDefined'

    import {FILL} from '../constants/columnKeys'
    import {isNumber} from './isNumber'

    export const getBandHoverPoints = (
      table: Table,
      hoverRowIndices: number[],
      xColKey: string,
      yColKey: string,
      xScale: Scale<number, number>,
      yScale: Scale<number, number>,
      lineData: LineData
    ): Array<{x: number; y: number; fill: string}> => {
      const xColData = table.getColumn(xColKey, 'number')
      const yColData = table.getColumn(yColKey, 'number')
      const groupColData = table.getColumn(FILL, 'number')
      const lines = lineData || {}

      return hoverRowIndices.map(hoverIndex => {
        let color = ''
        const lineIndex = groupColData[hoverIndex]
        if (isNumber(lineIndex) && lines[lineIndex]) {
          color = lines[lineIndex].fill
        }
        return {
          x: xScale(xColData[hoverIndex]),
          y: yScale(yColData[hoverIndex]),
          fill: color,
        }
      })
    }

    interface LineLengths {
      [index: string]: {
        length: number
        startIndex: number
      }
    }

    export const getLineLengths = (lineData: LineData): LineLengths => {
      const keys = Object.keys(lineData)

      const lineLengths = {}
      let total = 0
      if (Array.isArray(keys)) {
        keys.forEach(lineIndex => {
          const length = Math.min(
            lineData[lineIndex].xs.length,
            lineData[lineIndex].ys.length
          )
          if (!lineLengths[lineIndex]) {
            lineLengths[lineIndex] = {}
          }
          lineLengths[lineIndex].length = length
          lineLengths[lineIndex].startIndex = total
          total += length
        })
      }
      return lineLengths
    }

    export const getBandHoverIndices = (
      lineLengths: LineLengths,
      hoverRowIndices: number[],
      hoverGroupData: NumericColumnData,
      bandLineIndexMap: object
    ): BandLineMap => {
      const bandHoverIndices = {
        rowLines: [],
        lowerLines: [],
        upperLines: [],
      }
      const hoverGroupBoundaries = {}

      if (Array.isArray(hoverGroupData)) {
        hoverGroupData.forEach((lineIndex, position) => {
          if (!hoverGroupBoundaries[lineIndex]) {
            hoverGroupBoundaries[lineIndex] = {
              length: lineLengths[lineIndex].length,
              startIndex: position,
            }
          }
        })
      }

      const bands = bandLineIndexMap ? Object.values(bandLineIndexMap) : []
      bands.forEach(band => {
        if (hoverGroupBoundaries[band.row]) {
          hoverGroupBoundaries[band.row].upper = band.upper
          hoverGroupBoundaries[band.row].lower = band.lower
        }
      })

      if (Array.isArray(hoverRowIndices)) {
        hoverRowIndices.forEach(index => {
          const columnId = hoverGroupData[index]
          const hoveredBandId = Object.keys(hoverGroupBoundaries).find(
            bandId => Number(bandId) === Number(columnId)
          )

          if (hoverGroupBoundaries[hoveredBandId]) {
            const rowBase = lineLengths[hoveredBandId].startIndex
            const offset = index - hoverGroupBoundaries[hoveredBandId].startIndex

            bandHoverIndices.rowLines.push(rowBase + offset)

            if (isDefined(hoverGroupBoundaries[hoveredBandId].upper)) {
              const upperBase =
                lineLengths[hoverGroupBoundaries[hoveredBandId].upper].startIndex
              bandHoverIndices.upperLines.push(upperBase + offset)
            }

            if (isDefined(hoverGroupBoundaries[hoveredBandId].lower)) {
              const lowerBase =
                lineLengths[hoverGroupBoundaries[hoveredBandId].lower].startIndex
              bandHoverIndices.lowerLines.push(lowerBase + offset)
            }
          }
        })
      }

      return bandHoverIndices
    }