core.js
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import { dateUtil, getCalendarConfig } from './utils/index'
/**
* 计算当前月份前后两月应占的格子
* @param {number} year 年份
* @param {number} month 月份
*/
function calculateEmptyGrids(year, month, config) {
const prevMonthGrids = calculatePrevMonthGrids(year, month, config)
const nextMonthGrids = calculateNextMonthGrids(year, month, config)
return {
prevMonthGrids,
nextMonthGrids
}
}
/**
* 计算上月应占的格子
* @param {number} year 年份
* @param {number} month 月份
*/
function calculatePrevMonthGrids(year, month, config) {
let emptyGrids = []
const prevMonthDays = dateUtil.getDatesCountOfMonth(year, month - 1)
let firstDayOfWeek = dateUtil.firstDayOfWeek(year, month)
if (config.firstDayOfWeek === 'Mon') {
if (firstDayOfWeek === 0) {
firstDayOfWeek = 6
} else {
firstDayOfWeek -= 1
}
}
if (firstDayOfWeek > 0) {
const len = prevMonthDays - firstDayOfWeek
const { onlyShowCurrentMonth } = config
const YMInfo = dateUtil.getPrevMonthInfo({ year, month })
for (let i = prevMonthDays; i > len; i--) {
if (onlyShowCurrentMonth) {
emptyGrids.push('')
} else {
const week = dateUtil.getDayOfWeek(+year, +month, i)
emptyGrids.push({
...YMInfo,
date: i,
week
})
}
}
emptyGrids.reverse()
}
return emptyGrids
}
/**
* 计算下一月日期是否需要多展示的日期
* 某些月份日期为5排，某些月份6排，统一为6排
* @param {number} year
* @param {number} month
* @param {object} config
*/
function calculateExtraEmptyDate(year, month, config) {
let extDate = 0
if (+month === 2) {
extDate += 7
let firstDayofMonth = dateUtil.getDayOfWeek(year, month, 1)
if (config.firstDayOfWeek === 'Mon') {
if (+firstDayofMonth === 1) extDate += 7
} else {
if (+firstDayofMonth === 0) extDate += 7
}
} else {
let firstDayofMonth = dateUtil.getDayOfWeek(year, month, 1)
if (config.firstDayOfWeek === 'Mon') {
if (firstDayofMonth !== 0 && firstDayofMonth < 6) {
extDate += 7
}
} else {
if (firstDayofMonth <= 5) {
extDate += 7
}
}
}
return extDate
}
/**
* 计算下月应占的格子
* @param {number} year 年份
* @param {number} month 月份
*/
function calculateNextMonthGrids(year, month, config) {
let emptyGrids = []
const datesCount = dateUtil.getDatesCountOfMonth(year, month)
let lastDayWeek = dateUtil.getDayOfWeek(year, month, datesCount)
if (config.firstDayOfWeek === 'Mon') {
if (lastDayWeek === 0) {
lastDayWeek = 6
} else {
lastDayWeek -= 1
}
}
let len = 7 - (lastDayWeek + 1)
const { onlyShowCurrentMonth } = config
if (!onlyShowCurrentMonth) {
len = len + calculateExtraEmptyDate(year, month, config)
}
const YMInfo = dateUtil.getNextMonthInfo({ year, month })
for (let i = 1; i <= len; i++) {
const week = dateUtil.getDayOfWeek(+year, +month, i)
if (onlyShowCurrentMonth) {
emptyGrids.push('')
} else {
emptyGrids.push({
id: i - 1,
...YMInfo,
date: i,
week: week || 7
})
}
}
return emptyGrids
}
/**
* 设置日历面板数据
* @param {number} year 年份
* @param {number} month 月份
* @param {number} curDate 日期
*/
function calculateCurrentMonthDates(year, month) {
return dateUtil.calcDates(year, month)
}
export function calcJumpData({ dateInfo, config, component }) {
dateInfo = dateInfo || dateUtil.todayFMD()
const { year, month, date } = dateInfo
const calendarConfig = config || getCalendarConfig(component)
const emptyGrids = calculateEmptyGrids(year, month, calendarConfig)
const calendar = {
curYear: year,
curMonth: month,
curDate: date,
dates: calculateCurrentMonthDates(year, month),
...emptyGrids
}
return calendar
}