@syncfusion/ej2-pdf/src/pdf/core/graphics/automatic-fields/section-page-number-field.js

Feature-rich JavaScript PDF library with built-in support for loading and manipulating PDF document.

var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
        return extendStatics(d, b);
    };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
import { _formatNumber } from '../../utils';
import { PdfMultipleNumberValueField } from './multiple-number-value-field';
/**
 * Represents an automatic field that displays the page number within the current section.
 *
 * ```typescript
 * // Create a new document.
 * const document: PdfDocument = new PdfDocument();
 * // Add sections to the document.
 * const section: PdfSection = document.addSection();
 * // Initialize standard font.
 * const font: PdfStandardFont = new PdfStandardFont(PdfFontFamily.helvetica, 13);
 * // Initialize brush.
 * const brush: PdfBrush = new PdfBrush({ r: 255, g: 0, b: 255 });
 * // Create a section page number field.
 * const sectionPageNumberField: PdfSectionPageNumberField = new PdfSectionPageNumberField({ font: font, brush: brush });
 * // Add page to the section.
 * const page: PdfPage = section.addPage();
 * // Draw the section page number field
 * sectionPageNumberField.draw(page.graphics, { x: 150, y: 10 });
 * // Save the document.
 * document.save('Output.pdf');
 * // Destroy the document.
 * document.destroy();
 * ```
 */
var PdfSectionPageNumberField = /** @class */ (function (_super) {
    __extends(PdfSectionPageNumberField, _super);
    function PdfSectionPageNumberField(properties) {
        var _this = _super.call(this) || this;
        if (properties) {
            _this._initializeBase(properties.font, properties.brush, properties.stringFormat);
            if (properties.numberStyle) {
                _this._numberStyle = properties.numberStyle;
            }
        }
        return _this;
    }
    /**
     * Resolves page index within the current section.
     *
     * @private
     * @param {PdfGraphics} graphics The graphics context.
     * @returns {string} The formatted section page number.
     */
    PdfSectionPageNumberField.prototype._getValue = function (graphics) {
        if (graphics) {
            var page = this._getPageFromGraphics(graphics);
            if (!page || !page._pageDictionary) {
                return _formatNumber(1, this._numberStyle);
            }
            var pageRef = page._ref;
            var parentRef = page._pageDictionary.getRaw('Parent');
            if (!pageRef || !parentRef) {
                return _formatNumber(1, this._numberStyle);
            }
            var parentDict = page._crossReference._fetch(parentRef);
            if (!parentDict || !parentDict.has('Kids')) {
                return _formatNumber(1, this._numberStyle);
            }
            var kids = parentDict.get('Kids');
            if (!Array.isArray(kids)) {
                return _formatNumber(1, this._numberStyle);
            }
            for (var i = 0; i < kids.length; i++) {
                var kidRef = kids[i];
                if (kidRef && kidRef.objectNumber === pageRef.objectNumber) {
                    return _formatNumber(i + 1, this._numberStyle);
                }
            }
        }
        return _formatNumber(1, this._numberStyle);
    };
    return PdfSectionPageNumberField;
}(PdfMultipleNumberValueField));
export { PdfSectionPageNumberField };