devextreme/esm/__internal/scheduler/view_model/filtration/get_occurrences.js

JavaScript/TypeScript Component Suite for Responsive Web Development

/**
 * DevExtreme (esm/__internal/scheduler/view_model/filtration/get_occurrences.js)
 * Version: 26.1.3
 * Build date: Wed Jun 10 2026
 *
 * Copyright (c) 2012 - 2026 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */
import {
    addAllDayPanelOccupation
} from "./utils/add_all_day_panel_occupation";
import {
    filterByIntervals
} from "./utils/filter_by_intervals/filter_by_intervals";
import {
    getFilterOptions
} from "./utils/get_filter_options/get_filter_options";
import {
    splitByRecurrence
} from "./utils/split_by_recurrence/split_by_recurrence";
export const getOccurrences = (schedulerStore, startDate, endDate, appointments) => {
    const compareOptions = {
        startDayHour: 0,
        endDayHour: 24,
        min: startDate.getTime(),
        max: endDate.getTime(),
        skippedDays: []
    };
    const filterOptions = Object.assign({}, getFilterOptions(schedulerStore, compareOptions), {
        allDayPanelMode: "allDay",
        supportAllDayPanel: true,
        isDateTimeView: true
    });
    const step1 = addAllDayPanelOccupation(appointments, filterOptions);
    const step2 = splitByRecurrence(step1, filterOptions);
    const step3 = filterByIntervals(step2, filterOptions);
    const step4 = step3.map(appointment => ({
        startDate: new Date(appointment.source.startDate),
        endDate: new Date(appointment.source.endDate),
        appointmentData: appointment.itemData
    }));
    return step4
};