/**-----------------------------------------------------------------------------------------
* Copyright © 2026 Progress Software Corporation. All rights reserved.
* Licensed under commercial license. See LICENSE.md in the project root for more information
*-------------------------------------------------------------------------------------------*/
import { ChangeDetectorRef, OnDestroy, NgZone } from '@angular/core';
import { Observable } from 'rxjs';
import { type CSVExportOptions, type CSVRow } from '@progress/kendo-csv';
import { DataResult } from '@progress/kendo-data-query';
import { GridComponent } from '../grid.component';
import { CSVService } from './csv.service';
import { ContextService } from '../common/provider.service';
import * as i0 from "@angular/core";
/**
 * Defines a function that returns the data for CSV export.
 * @param component The Grid component.
 * @returns The data to export - can be an array of rows, a DataResult, or a Promise/Observable of the same types.
 */
export type CSVFetchDataCallback = (component: GridComponent) => CSVRow[] | DataResult | Promise<CSVRow[] | DataResult> | Observable<CSVRow[] | DataResult>;
/**
 * The component is required when exporting the data to a CSV file. The component provides different options to customize the exported file and its content.
 *
 * @example
 * ```html
 * <kendo-grid>
 *   <kendo-grid-csv fileName="Export.csv"></kendo-grid-csv>
 * </kendo-grid>
 * ```
 */
export declare class CSVComponent implements OnDestroy {
    private ctx;
    private zone;
    private cdr;
    /**
     * Sets the file name for the exported CSV file.
     * @default "Export.csv"
     */
    fileName: string;
    /**
     * Provides a function to get the exported data. By default, uses the data displayed in the Grid in accordance with the currently applied `State`. Supply a custom function to export a different data set. Typically used to export all data, not just the current page.
     */
    fetchData: CSVFetchDataCallback;
    /**
     * Sets optional column headers to render on the first line. By default, column names are extracted from each column's `title` or `field` properties.
     */
    names: string[] | null;
    /**
     * Sets property names to extract from object or Map rows, in order. By default, these are the properties used as `field` binding values in the Grid's column definitions.
     */
    keys: string[] | null;
    /**
     * Sets the character used to separate values in a row. Must be a single character.
     * @default ","
     */
    delimiter: string;
    /**
     * Sets the string used to terminate each line.
     * @default "\r\n"
     */
    lineSeparator: string;
    /**
     * When `true`, prefixes potentially dangerous formula characters (`=`, `+`, `-`, `@`, tab, `\r`) with a single quote (`'`) to prevent formula injection attacks in spreadsheet applications.
     * @default true
     */
    preventFormulaInjection: boolean;
    /**
     * Sets the maximum number of characters allowed per cell. Values exceeding this limit are truncated.
     * @default 32767
     */
    maxCellLength: number;
    /**
     * Maximum number of rows to export.
     * Data exceeding this limit is automatically truncated.
     * Default: 1000000 (prevents memory exhaustion and DoS attacks).
     *
     * @default 1000000
     */
    maxRows: number;
    /**
     * Maximum number of columns to export.
     * Keys/columns exceeding this limit are automatically truncated.
     * Default: 1000 (prevents memory exhaustion and DoS attacks).
     *
     * @default 1000
     */
    maxColumns: number;
    /**
     * When `true`, adds a UTF-8 Byte Order Mark (BOM) at the beginning of the file. Helps applications like Microsoft Excel correctly recognize UTF-8 encoding.
     * @default false
     */
    includeUTF8BOM: boolean;
    /**
     * Provides a custom formatter for group headers in grouped data exports. Receives the display names of grouped fields and returns the formatted header.
     * @default Joins display names with '/' separator
     */
    groupHeaderFormatter: ((displayNames: string[]) => string) | undefined;
    /**
     * Provides a custom formatter for group value rows in grouped data exports. Receives the values and field names, and returns the formatted group value.
     * @default Joins values with '/' separator
     */
    groupValueFormatter: ((values: any[], groupNames: string[]) => string) | undefined;
    /**
     * Forwards the content to [`proxyURL`](#toc-proxyurl) even if the browser supports local file saving when set to `true`.
     */
    forceProxy: boolean;
    /**
     * Sets the URL of the server-side proxy that streams the file to the user. Use a proxy if the browser cannot save files locally.
     * Set [`forceProxy`](#toc-forceproxy) to `true` to skip client-side saving.
     * The proxy receives a POST request with specific parameters and returns the decoded file with the `"Content-Disposition"` header set to `attachment; filename="<fileName.csv>"`.
     * For more details, see the [File Saver](https://www.telerik.com/kendo-angular-ui/components/file-saver) documentation.
     */
    proxyURL: string;
    private saveSubscription;
    private dataSubscription;
    constructor(csvService: CSVService, ctx: ContextService, zone: NgZone, cdr: ChangeDetectorRef);
    ngOnDestroy(): void;
    /**
     * @hidden
     */
    toCSVString(component: GridComponent): string | Promise<string>;
    /**
     * @hidden
     */
    saveAsCSV(component: GridComponent): void;
    protected save(component: GridComponent): void;
    protected exportData(component: GridComponent, result: any): void;
    protected getCSVOptions(component: GridComponent): Omit<CSVExportOptions, 'data'>;
    protected extractColumnNames(component: GridComponent): string[];
    protected extractColumnKeys(component: GridComponent): string[];
    protected saveFile(csvString: string): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<CSVComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<CSVComponent, "kendo-grid-csv", never, { "fileName": { "alias": "fileName"; "required": false; }; "fetchData": { "alias": "fetchData"; "required": false; }; "names": { "alias": "names"; "required": false; }; "keys": { "alias": "keys"; "required": false; }; "delimiter": { "alias": "delimiter"; "required": false; }; "lineSeparator": { "alias": "lineSeparator"; "required": false; }; "preventFormulaInjection": { "alias": "preventFormulaInjection"; "required": false; }; "maxCellLength": { "alias": "maxCellLength"; "required": false; }; "maxRows": { "alias": "maxRows"; "required": false; }; "maxColumns": { "alias": "maxColumns"; "required": false; }; "includeUTF8BOM": { "alias": "includeUTF8BOM"; "required": false; }; "groupHeaderFormatter": { "alias": "groupHeaderFormatter"; "required": false; }; "groupValueFormatter": { "alias": "groupValueFormatter"; "required": false; }; "forceProxy": { "alias": "forceProxy"; "required": false; }; "proxyURL": { "alias": "proxyURL"; "required": false; }; }, {}, never, never, true, never>;
}