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* Copyright 2021 Harness Inc. All rights reserved.
* Use of this source code is governed by the PolyForm Shield 1.0.0 license
* that can be found in the licenses directory at the root of this repository, also available at
* https://polyformproject.org/wp-content/uploads/2020/06/PolyForm-Shield-1.0.0.txt.
*/
import React, { useState, useEffect, useMemo, useRef } from 'react'
import { Container, Text } from '@wings-software/uicore'
import { Classes } from '@blueprintjs/core'
import isUndefined from 'lodash/isUndefined'
import moment from 'moment'
import classnames from 'classnames'
import { TimeBasedShadedRegion, TimeBasedShadedRegionProps } from '../TimeBasedShadedRegion/TimeBasedShadedRegion'
import { TimelineBar, TimelineBarProps } from './TimelineBar'
import styles from './TimelineView.module.scss'
interface RowItem {
startTime: string | number | Date
endTime?: string | number | Date
[x: string]: any
}
interface RowConfig {
name?: string | JSX.Element
data: Array<RowItem>
className?: string
}
export interface TimelineViewProps {
startTime: string | number | Date
endTime: string | number | Date
rows: Array<RowConfig>
minItemsDistance?: number
renderItem(item: RowItem): JSX.Element
renderBatch?(items: Array<RowItem>): JSX.Element
className?: string
labelsWidth?: number
loading?: boolean
hideTimelineBar?: boolean
rowHeight?: number
timelineBarProps?: Omit<TimelineBarProps, 'startDate' | 'endDate'>
shadedRegionProps?: Omit<TimeBasedShadedRegionProps, 'parentRef'>
}
export default function TimelineView({
startTime,
endTime,
rows,
minItemsDistance,
renderItem,
renderBatch,
className,
loading,
labelsWidth = 125,
hideTimelineBar = false,
rowHeight = 50,
timelineBarProps,
shadedRegionProps
}: TimelineViewProps): JSX.Element {
const start = moment(startTime)
const end = moment(endTime)
const distance = end.diff(start)
const ref = useRef<HTMLDivElement>(null)
const timelineRowRef = useRef<HTMLDivElement>(null)
const [rowWidth, setRowWidth] = useState(0)
const leftPosition = (itemStartDate: any) => (100 * itemStartDate.diff(start)) / distance
const rightPosition = (itemEndDate: any) => (100 * end.diff(itemEndDate)) / distance
const onResize = () => {
Eif (ref.current) {
const rowElem = ref.current.querySelector(`.${styles.rowItems}`)
Eif (rowElem) {
setRowWidth(rowElem.getBoundingClientRect().width)
}
}
}
useEffect(() => {
onResize()
window.addEventListener('resize', onResize)
return () => window.removeEventListener('resize', onResize)
}, [])
const rowsInternal = useMemo(() => {
return rows.map(row => {
let data: Array<any> = row.data.map(item => ({
left: leftPosition(moment(item.startTime)),
right: rightPosition(moment(item.endTime || item.startTime)),
item,
batch: []
}))
Iif (!!minItemsDistance && data.length >= 2) {
data = calculateInternals(data, rowWidth, minItemsDistance)
}
return {
name: row.name,
data
}
})
}, [rows, rowWidth])
const showLabels = rowsInternal.some(row => !isUndefined(row.name))
return (
<div className={classnames(styles.timelineView, 'timelineView', className)} ref={ref}>
{!hideTimelineBar && (
<TimelineBar
style={showLabels ? { marginLeft: labelsWidth, marginBottom: 'var(--spacing-small)' } : undefined}
className={styles.timelineViewBar}
{...timelineBarProps}
startDate={startTime}
endDate={endTime}
/>
)}
{rowsInternal.map((row, rowIndex) => (
<div key={rowIndex} className={classnames(styles.timelineRow, 'timelineRow')} style={{ height: rowHeight }}>
{showLabels && (
<Container className={styles.nameWrapper} width={labelsWidth}>
{typeof row.name === 'string' ? <Text width={labelsWidth}>{row.name}</Text> : row.name}
</Container>
)}
<div
className={classnames(
styles.rowItems,
'rowItems',
loading ? classnames(styles.loading, Classes.SKELETON) : undefined
)}
ref={rowIndex === 0 ? timelineRowRef : undefined}
>
{row.data.map((item, itemIndex) => (
<Container
key={itemIndex}
style={{
left: `${item.left}%`,
right: `${item.right}%`
}}
className={styles.rowItem}
>
{item.left >= 0 && item.left <= 100 && (
<>
{item.item && renderItem(item.item)}
{!!item.batch.length && renderBatch?.(item.batch)}
</>
)}
</Container>
))}
</div>
</div>
))}
{shadedRegionProps && <TimeBasedShadedRegion {...shadedRegionProps} parentRef={timelineRowRef?.current} />}
</div>
)
}
function calculateInternals(data: Array<any>, rowWidth: number, minItemsDistance: number) {
if (rowWidth) {
data.sort((a, b) => a.left - b.left)
for (let i = 0, j = 1; j < data.length; ) {
if (data[i].batch.length) {
// previous is batch
const x1 = (rowWidth * data[i].left) / 100
const x2 = (rowWidth * data[j].left) / 100
if (x2 - minItemsDistance <= x1) {
data[i].batch.push(data[j].item)
data[j].item = undefined
data[i].right = data[j].right
j++
} else {
i = j
j++
}
} else {
const x1 = rowWidth * (1 - data[i].right / 100)
const x2 = (rowWidth * data[j].left) / 100
if (x2 - minItemsDistance <= x1) {
data[i].batch = [data[i].item, data[j].item]
data[i].item = data[j].item = undefined
data[i].right = data[j].right
j++
} else {
i = j
j++
}
}
}
return data.filter(e => e.item || e.batch.length)
} else {
return []
}
}
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