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import { CalendarEventParsed, CalendarEventVisual, CalendarTimestamp } from 'vuetify/types'
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import { getTimestampIdentifier } from '../util/timestamp'
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const MILLIS_IN_DAY = 86400000
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export type GetRange = (event: CalendarEventParsed) => [number, number]
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export function getVisuals (events: CalendarEventParsed[], minStart = 0): CalendarEventVisual[] {
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const visuals = events.map(event => ({
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event,
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columnCount: 0,
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column: 0,
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left: 0,
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width: 100,
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}))
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visuals.sort((a, b) => {
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return (Math.max(minStart, a.event.startTimestampIdentifier) - Math.max(minStart, b.event.startTimestampIdentifier)) ||
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(b.event.endTimestampIdentifier - a.event.endTimestampIdentifier)
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})
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return visuals
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}
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export interface ColumnGroup {
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start: number
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end: number
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visuals: CalendarEventVisual[]
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}
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export function hasOverlap (s0: number, e0: number, s1: number, e1: number, exclude = true): boolean {
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return exclude ? !(s0 >= e1 || e0 <= s1) : !(s0 > e1 || e0 < s1)
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}
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export function setColumnCount (groups: ColumnGroup[]) {
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groups.forEach(group => {
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group.visuals.forEach(groupVisual => {
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groupVisual.columnCount = groups.length
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})
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})
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}
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export function getRange (event: CalendarEventParsed): [number, number] {
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return [event.startTimestampIdentifier, event.endTimestampIdentifier]
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}
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export function getDayRange (event: CalendarEventParsed): [number, number] {
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return [event.startIdentifier, event.endIdentifier]
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}
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export function getNormalizedRange (event: CalendarEventParsed, dayStart: number): [number, number] {
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return [Math.max(dayStart, event.startTimestampIdentifier), Math.min(dayStart + MILLIS_IN_DAY, event.endTimestampIdentifier)]
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}
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export function getOpenGroup (groups: ColumnGroup[], start: number, end: number, timed: boolean) {
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for (let i = 0; i < groups.length; i++) {
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const group = groups[i]
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let intersected = false
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if (hasOverlap(start, end, group.start, group.end, timed)) {
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for (let k = 0; k < group.visuals.length; k++) {
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const groupVisual = group.visuals[k]
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const [groupStart, groupEnd] = timed ? getRange(groupVisual.event) : getDayRange(groupVisual.event)
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if (hasOverlap(start, end, groupStart, groupEnd, timed)) {
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intersected = true
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break
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}
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}
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}
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if (!intersected) {
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return i
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}
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}
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return -1
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}
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export function getOverlapGroupHandler (firstWeekday: number) {
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81
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const handler = {
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groups: [] as ColumnGroup[],
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min: -1,
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max: -1,
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reset: () => {
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handler.groups = []
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handler.min = handler.max = -1
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},
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getVisuals: (day: CalendarTimestamp, dayEvents: CalendarEventParsed[], timed: boolean, reset = false) => {
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if (day.weekday === firstWeekday || reset) {
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handler.reset()
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}
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const dayStart = getTimestampIdentifier(day)
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const visuals = getVisuals(dayEvents, dayStart)
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visuals.forEach(visual => {
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const [start, end] = timed ? getRange(visual.event) : getDayRange(visual.event)
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if (handler.groups.length > 0 && !hasOverlap(start, end, handler.min, handler.max, timed)) {
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setColumnCount(handler.groups)
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handler.reset()
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}
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let targetGroup = getOpenGroup(handler.groups, start, end, timed)
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if (targetGroup === -1) {
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targetGroup = handler.groups.length
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handler.groups.push({ start, end, visuals: [] })
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}
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const target = handler.groups[targetGroup]
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target.visuals.push(visual)
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target.start = Math.min(target.start, start)
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target.end = Math.max(target.end, end)
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visual.column = targetGroup
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if (handler.min === -1) {
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handler.min = start
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handler.max = end
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} else {
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handler.min = Math.min(handler.min, start)
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handler.max = Math.max(handler.max, end)
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}
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})
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setColumnCount(handler.groups)
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1
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if (timed) {
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handler.reset()
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}
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return visuals
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},
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137
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}
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0
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return handler
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}
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mcdmaster