devextreme
Version:
HTML5 JavaScript Component Suite for Responsive Web Development
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JavaScript
/**
* DevExtreme (esm/__internal/scheduler/r1/utils/work_week.js)
* Version: 24.2.6
* Build date: Mon Mar 17 2025
*
* Copyright (c) 2012 - 2025 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
import dateUtils from "../../../../core/utils/date";
import {
getViewStartByOptions,
isDataOnWeekend,
setOptionHour
} from "./base";
import {
getValidStartDate
} from "./week";
const MONDAY_INDEX = 1;
const DAYS_IN_WEEK = 7;
export const calculateStartViewDate = (currentDate, startDayHour, startDate, intervalDuration, firstDayOfWeek) => {
const viewStart = getViewStartByOptions(startDate, currentDate, intervalDuration, getValidStartDate(startDate, firstDayOfWeek));
const firstViewDate = dateUtils.getFirstWeekDate(viewStart, firstDayOfWeek);
if (isDataOnWeekend(firstViewDate)) {
const currentDay = firstViewDate.getDay();
const distance = (8 - currentDay) % 7;
firstViewDate.setDate(firstViewDate.getDate() + distance)
}
return setOptionHour(firstViewDate, startDayHour)
};