import { PdfFont } from '../../fonts/pdf-standard-font';
import { PdfStringFormat } from '../../fonts/pdf-string-format';
import { PdfBrush, PdfGraphics } from '../pdf-graphics';
import { PdfAutomaticField } from './automatic-field';
import { PdfMultipleValueField } from './multiple-value-field';
/**
 * Represents a composite field that combines multiple automatic fields.
 *
 * ```typescript
 * // Create a new document.
 * const document: PdfDocument = new PdfDocument();
 * // Adds a new page to the document
 * const page: PdfPage = document.addPage();
 * // Initialize a standard Helvetica font.
 * const font = new PdfStandardFont(PdfFontFamily.helvetica, 12);
 * // Create a solid brush for drawing text.
 * const brush: PdfBrush = new PdfBrush({ r: 0, g: 0, b: 0 });
 * // Create a page number field.
 * const pageNumber: PdfPageNumberField = new PdfPageNumberField({ font: font, brush: brush });
 * // Create a page count field.
 * const pageCount: PdfPageCountField = new PdfPageCountField({ font: font, brush: brush });
 * // Combine fields into a composite with a formatted pattern.
 * const composite: PdfCompositeField = new PdfCompositeField({font: font, brush: brush, pattern: 'Page{0}/{1}', automaticFields: [pageNumber, pageCount] });
 * // Draw the composite field on page.
 * composite.draw(page.graphics, { x: 10, y: 10 });
 * // Save the document.
 * document.save('output.pdf');
 * // Destroy the document.
 * document.destroy();
 * ```
 */
export declare class PdfCompositeField extends PdfMultipleValueField {
    _automaticFields: PdfAutomaticField[];
    _pattern: string;
    /**
     * Initializes a new instance of the composite field.
     *
     * ```typescript
     * // Create a new document.
     * const document: PdfDocument = new PdfDocument();
     * // Adds a new page to the document
     * const page: PdfPage = document.addPage();
     * // Initialize a standard Helvetica font.
     * const font = new PdfStandardFont(PdfFontFamily.helvetica, 12);
     * // Create a solid brush for drawing text.
     * const brush: PdfBrush = new PdfBrush({ r: 0, g: 0, b: 0 });
     * // Create a page number field.
     * const pageNumber: PdfPageNumberField = new PdfPageNumberField({ font: font, brush: brush });
     * // Create a page count field.
     * const pageCount: PdfPageCountField = new PdfPageCountField({ font: font, brush: brush });
     * // Combine fields into a composite with a formatted pattern.
     * const composite: PdfCompositeField = new PdfCompositeField();
     * // Assign composite field pattern to render
     * composite.pattern = 'Page{0}/{1}';
     * // Assign automatic field list
     * composite.automaticFields = [pageNumber, pageCount];
     * // Draw the composite field on page.
     * composite.draw(page.graphics, { x: 10, y: 10 });
     * // Save the document.
     * document.save('output.pdf');
     * // Destroy the document.
     * document.destroy();
     * ```
     */
    constructor();
    /**
     * Initializes a new instance of the composite field with the specified properties.
     *
     * ```typescript
     * // Create a new document.
     * const document: PdfDocument = new PdfDocument();
     * // Adds a new page to the document
     * const page: PdfPage = document.addPage();
     * // Initialize a standard Helvetica font.
     * const font = new PdfStandardFont(PdfFontFamily.helvetica, 12);
     * // Create a solid brush for drawing text.
     * const brush: PdfBrush = new PdfBrush({ r: 0, g: 0, b: 0 });
     * // Initialize a string format.
     * const format: PdfStringFormat = new PdfStringFormat(PdfTextAlignment.right);
     * // Create a page number field.
     * const pageNumber: PdfPageNumberField = new PdfPageNumberField({ font: font, brush: brush });
     * // Create a page count field
     * const pageCount: PdfPageCountField = new PdfPageCountField({ font: font, brush: brush });
     * // Combine fields into a composite with a formatted pattern.
     * const composite: PdfCompositeField = new PdfCompositeField({font: font, brush: brush, stringFormat: format, pattern: 'Page{0}/{1}', automaticFields: [pageNumber, pageCount]});
     * // Draw the composite field on page.
     * composite.draw(page.graphics, { x: 10, y: 10 });
     * // Save the document.
     * document.save('output.pdf');
     * // Destroy the document.
     * document.destroy();
     * ```
     *
     * @param {object} [properties]  Field configuration properties.
     * @param {PdfFont} [properties.font] The font used to render the field text.
     * @param {PdfBrush} [properties.brush] The brush used to draw the field text.
     * @param {PdfStringFormat} [properties.stringFormat] The string format used for layout and rendering.
     * @param {string} [properties.pattern] The format pattern.
     * @param {PdfAutomaticField[]} [properties.automaticFields] The collection of automatic fields.
     */
    constructor(properties: {
        font?: PdfFont;
        brush?: PdfBrush;
        stringFormat?: PdfStringFormat;
        pattern?: string;
        automaticFields?: PdfAutomaticField[];
    });
    /**
     * Gets the collection of automatic fields associated with the composite field.
     *
     * ```typescript
     * // Create a new document.
     * const document: PdfDocument = new PdfDocument();
     * // Adds a new page to the document
     * const page: PdfPage = document.addPage();
     * // Initialize a standard Helvetica font.
     * const font = new PdfStandardFont(PdfFontFamily.helvetica, 12);
     * // Create a solid brush for drawing text.
     * const brush: PdfBrush = new PdfBrush({ r: 0, g: 0, b: 0 });
     * // Initialize a string format.
     * const format: PdfStringFormat = new PdfStringFormat(PdfTextAlignment.right);
     * // Create a page number field.
     * const pageNumber: PdfPageNumberField = new PdfPageNumberField({ font: font, brush: brush });
     * // Create a page count field
     * const pageCount: PdfPageCountField = new PdfPageCountField({ font: font, brush: brush });
     * // Combine fields into a composite with a formatted pattern.
     * const composite: PdfCompositeField = new PdfCompositeField({font: font, brush: brush, stringFormat: format, pattern: 'Page{0}/{1}', automaticFields: [pageNumber, pageCount]});
     * // Get the collection of automatic fields from the composite field
     * const fields: PdfAutomaticField[] = composite.automaticFields;
     * // Draw the composite field on page.
     * composite.draw(page.graphics, { x: 10, y: 10 });
     * // Save the document.
     * document.save('output.pdf');
     * // Destroy the document.
     * document.destroy();
     * ```
     *
     * @returns {PdfAutomaticField[]} The automatic fields used by the composite field.
     */
    /**
    * Sets the collection of automatic fields for the composite field
    *
    * ```typescript
    * // Create a new document.
    * const document: PdfDocument = new PdfDocument();
    * // Add new page to document
    * const page: PdfPage = document.addPage();
    * // Initialize a standard Helvetica font.
    * const font = new PdfStandardFont(PdfFontFamily.helvetica, 12);
    * // Create a solid brush for drawing text.
    * const brush: PdfBrush = new PdfBrush({ r: 0, g: 0, b: 0 });
    * // Initialize a string format.
    * const format: PdfStringFormat = new PdfStringFormat(PdfTextAlignment.right);
    * // Create a page number field.
    * const pageNumber: PdfPageNumberField = new PdfPageNumberField({ font: font, brush: brush });
    * // Create a page count field
    * const pageCount: PdfPageCountField = new PdfPageCountField({ font: font, brush: brush });
    * // Combine fields into a composite with a formatted pattern.
    * const composite: PdfCompositeField = new PdfCompositeField({font: font, brush: brush, stringFormat: format, pattern: 'Page{0}/{1}'});
    * // Set the collection of automatic fields to composite field.
    * composite.automaticFields = [pageNumber, pageCount];
    * // Draw the composite field on page.
    * composite.draw(page.graphics, { x: 10, y: 10 });
    * // Save the document.
    * document.save('output.pdf');
    * // Destroy the document.
    * document.destroy();
    * ```
    *
    * @param {PdfAutomaticField[]} value The automatic fields to associate with the composite field.
    */
    automaticFields: PdfAutomaticField[];
    /**
     * Gets the text pattern that defines how multiple automatic fields are combined and displayed.
     *
     * @returns {string} The composite text format string.
     *
     * ```typescript
     * // Create a new document.
     * const document: PdfDocument = new PdfDocument();
     * // Adds a new page to the document
     * const page: PdfPage = document.addPage();
     * // Initialize a standard Helvetica font.
     * const font = new PdfStandardFont(PdfFontFamily.helvetica, 12);
     * // Create a solid brush for drawing text.
     * const brush: PdfBrush = new PdfBrush({ r: 0, g: 0, b: 0 });
     * // Initialize a string format.
     * const format: PdfStringFormat = new PdfStringFormat(PdfTextAlignment.right);
     * // Create a page number field.
     * const pageNumber: PdfPageNumberField = new PdfPageNumberField({ font: font, brush: brush });
     * // Create a page count field
     * const pageCount: PdfPageCountField = new PdfPageCountField({ font: font, brush: brush });
     * // Combine fields into a composite with a formatted pattern.
     * const composite: PdfCompositeField = new PdfCompositeField({font: font, brush: brush, stringFormat: format, pattern: 'Page{0}/{1}', automaticFields: [pageNumber, pageCount]});
     * // Get the text pattern from the composite field.
     * const pattern: string = composite.pattern;
     * // Draw the composite field on page.
     * composite.draw(page.graphics, { x: 10, y: 10 });
     * // Save the document.
     * document.save('output.pdf');
     * // Destroy the document.
     * document.destroy();
     *
     */
    /**
    * Sets the text pattern that defines how multiple automatic fields are combined and displayed.
    *
    * ```typescript
    * // Create a new document.
    * const document: PdfDocument = new PdfDocument();
    * // Adds a new page to the document
    * const page: PdfPage = document.addPage();
    * // Initialize a standard Helvetica font.
    * const font = new PdfStandardFont(PdfFontFamily.helvetica, 12);
    * // Create a solid brush for drawing text.
    * const brush: PdfBrush = new PdfBrush({ r: 0, g: 0, b: 0 });
    * // Initialize a string format.
    * const format: PdfStringFormat = new PdfStringFormat(PdfTextAlignment.right);
    * // Create a page number field.
    * const pageNumber: PdfPageNumberField = new PdfPageNumberField({ font: font, brush: brush });
    * // Create a page count field
    * const pageCount: PdfPageCountField = new PdfPageCountField({ font: font, brush: brush });
    * // Combine fields into a composite with a formatted pattern.
    * const composite: PdfCompositeField = new PdfCompositeField({font: font, brush: brush, stringFormat: format, automaticFields: [pageNumber, pageCount]});
    * // Set the text pattern for composite field.
    * composite.pattern = 'Page{0}/{1}';
    * // Draw the composite field on page.
    * composite.draw(page.graphics, { x: 10, y: 10 });
    * // Save the document.
    * document.save('output.pdf');
    * // Destroy the document.
    * document.destroy();
    *
    * @param {string} value The composite text format string.
    */
    pattern: string;
    /**
     * Computes the composite field value.
     *
     * @private
     * @param {PdfGraphics} graphics The graphics context.
     * @returns {string} The formatted composite value.
     */
    _getValue(graphics: PdfGraphics): string;
}