import { EventEmitter, OnInit, OnChanges, SimpleChanges } from '@angular/core';
import { RealsoftSort } from './sort';
import * as i0 from "@angular/core";
/**
 * Directive for automatically sorting date columns in a table.
 * This directive extends the base RealsoftSort functionality
 * and automatically handles date sorting.
 *
 * Usage:
 * <table realsoftDateSort
 *        [data]="products"
 *        (sortedData)="sortedProducts = $event">
 *   <th realsoft-sort-header="createdDate">Created Date</th>
 * </table>
 */
export declare class RealsoftDateSort extends RealsoftSort implements OnInit, OnChanges {
    /**
     * The data array to be sorted.
     * When this changes or sort changes, the data will be automatically sorted.
     */
    data: any[];
    /**
     * Event emitted with the sorted data.
     * This fires whenever the sort changes or the input data changes.
     */
    sortedData: EventEmitter<any[]>;
    /**
     * Expected date format when parsing string dates.
     * Common formats: 'MM/DD/YYYY', 'DD/MM/YYYY', 'YYYY-MM-DD'
     * If not specified, uses JavaScript's Date constructor parsing.
     */
    dateFormat?: string;
    /**
     * How to handle null/undefined/invalid date values.
     * 'first' - null values appear first
     * 'last' - null values appear last
     */
    nullHandling: 'first' | 'last';
    /**
     * Whether to parse ISO string dates automatically.
     * Useful when dates are stored as ISO strings.
     */
    parseISOStrings: boolean;
    /**
     * Custom date parser function.
     * Allows for custom date parsing logic.
     */
    customParser?: (value: any) => Date | null;
    /**
     * Whether to sort immediately when data is provided.
     * If false, data will only be sorted when user clicks a column header.
     */
    sortOnInit: boolean;
    ngOnInit(): void;
    ngOnChanges(changes?: SimpleChanges): void;
    /**
     * Performs the actual sorting and emits the result
     */
    private performSort;
    /**
     * Compares two date values based on sort direction
     */
    private compareDate;
    /**
     * Parses a value into a Date object
     */
    private parseDate;
    /**
     * Checks if a string is in ISO date format
     */
    private isISODateString;
    /**
     * Parses a date string according to a specific format
     */
    private parseFormattedDate;
    /**
     * Helper to get nested object properties using dot notation
     */
    private getNestedProperty;
    /**
     * Public method to trigger a re-sort with current settings
     */
    resort(): void;
    /**
     * Public method to clear sorting and return original data
     */
    clearSort(): void;
    /**
     * Utility method to filter data by date range
     */
    filterByDateRange(startDate: Date | string | number, endDate: Date | string | number): any[];
    /**
     * Utility method to group data by date period
     */
    groupByPeriod(period: 'day' | 'week' | 'month' | 'year'): Map<string, any[]>;
    /**
     * Gets a string key for grouping by period
     */
    private getDatePeriodKey;
    /**
     * Gets the week number for a date
     */
    private getWeekNumber;
    static ɵfac: i0.ɵɵFactoryDeclaration<RealsoftDateSort, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<RealsoftDateSort, "[realsoftDateSort]", ["realsoftDateSort"], { "data": { "alias": "data"; "required": false; }; "dateFormat": { "alias": "dateFormat"; "required": false; }; "nullHandling": { "alias": "nullHandling"; "required": false; }; "parseISOStrings": { "alias": "parseISOStrings"; "required": false; }; "customParser": { "alias": "customParser"; "required": false; }; "sortOnInit": { "alias": "sortOnInit"; "required": false; }; }, { "sortedData": "sortedData"; }, never, never, true, never>;
}