pdfmake/js/browser-extensions/OutputDocumentBrowser.js

Client/server side PDF printing in pure JavaScript

"use strict";

exports.__esModule = true;
exports.default = void 0;
var _OutputDocument = _interopRequireDefault(require("../OutputDocument"));
var _fileSaver = require("file-saver");
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/**
 * @returns {Window}
 */
const openWindow = () => {
  // we have to open the window immediately and store the reference
  // otherwise popup blockers will stop us
  let win = window.open('', '_blank');
  if (win === null) {
    throw new Error('Open PDF in new window blocked by browser');
  }
  return win;
};
class OutputDocumentBrowser extends _OutputDocument.default {
  /**
   * @returns {Promise<Blob>}
   */
  async getBlob() {
    const buffer = await this.getBuffer();
    return new Blob([buffer], {
      type: 'application/pdf'
    });
  }

  /**
   * @param {string} filename
   * @returns {Promise}
   */
  async download(filename = 'file.pdf') {
    const blob = await this.getBlob();
    (0, _fileSaver.saveAs)(blob, filename);
  }

  /**
   * @param {Window} win
   * @returns {Promise}
   */
  async open(win = null) {
    if (!win) {
      win = openWindow();
    }
    const blob = await this.getBlob();
    try {
      let urlCreator = window.URL || window.webkitURL;
      let pdfUrl = urlCreator.createObjectURL(blob);
      win.location.href = pdfUrl;

      /* temporarily disabled
      if (win === window) {
      	return;
      } else {
      	setTimeout(() => {
      		if (win.window === null) { // is closed by AdBlock
      			window.location.href = pdfUrl; // open in actual window
      		}
      		return;
      	}, 500);
      }
      */
    } catch (e) {
      win.close();
      throw e;
    }
  }

  /**
   * @param {Window} win
   * @returns {Promise}
   */
  async print(win = null) {
    const stream = await this.getStream();
    stream.setOpenActionAsPrint();
    await this.open(win);
  }
}
var _default = exports.default = OutputDocumentBrowser;