jtBaseApp/node_modules/@cesium/widgets/Source/FullscreenButton/FullscreenButton.js

import {
  defined,
  destroyObject,
  DeveloperError,
  getElement,
} from "@cesium/engine";
import knockout from "../ThirdParty/knockout.js";
import FullscreenButtonViewModel from "./FullscreenButtonViewModel.js";

const enterFullScreenPath =
  "M 83.96875 17.5625 L 83.96875 17.59375 L 76.65625 24.875 L 97.09375 24.96875 L 76.09375 45.96875 L 81.9375 51.8125 L 102.78125 30.9375 L 102.875 51.15625 L 110.15625 43.875 L 110.1875 17.59375 L 83.96875 17.5625 z M 44.125 17.59375 L 17.90625 17.625 L 17.9375 43.90625 L 25.21875 51.1875 L 25.3125 30.96875 L 46.15625 51.8125 L 52 45.96875 L 31 25 L 51.4375 24.90625 L 44.125 17.59375 z M 46.0625 76.03125 L 25.1875 96.875 L 25.09375 76.65625 L 17.8125 83.9375 L 17.8125 110.21875 L 44 110.25 L 51.3125 102.9375 L 30.90625 102.84375 L 51.875 81.875 L 46.0625 76.03125 z M 82 76.15625 L 76.15625 82 L 97.15625 103 L 76.71875 103.0625 L 84.03125 110.375 L 110.25 110.34375 L 110.21875 84.0625 L 102.9375 76.8125 L 102.84375 97 L 82 76.15625 z";
const exitFullScreenPath =
  "M 104.34375 17.5625 L 83.5 38.4375 L 83.40625 18.21875 L 76.125 25.5 L 76.09375 51.78125 L 102.3125 51.8125 L 102.3125 51.78125 L 109.625 44.5 L 89.1875 44.40625 L 110.1875 23.40625 L 104.34375 17.5625 z M 23.75 17.59375 L 17.90625 23.4375 L 38.90625 44.4375 L 18.5 44.53125 L 25.78125 51.8125 L 52 51.78125 L 51.96875 25.53125 L 44.6875 18.25 L 44.625 38.46875 L 23.75 17.59375 z M 25.6875 76.03125 L 18.375 83.3125 L 38.78125 83.40625 L 17.8125 104.40625 L 23.625 110.25 L 44.5 89.375 L 44.59375 109.59375 L 51.875 102.3125 L 51.875 76.0625 L 25.6875 76.03125 z M 102.375 76.15625 L 76.15625 76.1875 L 76.1875 102.4375 L 83.46875 109.71875 L 83.5625 89.53125 L 104.40625 110.375 L 110.25 104.53125 L 89.25 83.53125 L 109.6875 83.46875 L 102.375 76.15625 z";

/**
 * A single button widget for toggling fullscreen mode.
 *
 * @alias FullscreenButton
 * @constructor
 *
 * @param {Element|string} container The DOM element or ID that will contain the widget.
 * @param {Element|string} [fullscreenElement=document.body] The element or id to be placed into fullscreen mode.
 *
 * @exception {DeveloperError} Element with id "container" does not exist in the document.
 *
 * @see Fullscreen
 */
function FullscreenButton(container, fullscreenElement) {
  //>>includeStart('debug', pragmas.debug);
  if (!defined(container)) {
    throw new DeveloperError("container is required.");
  }
  //>>includeEnd('debug');

  container = getElement(container);

  const viewModel = new FullscreenButtonViewModel(fullscreenElement, container);

  viewModel._exitFullScreenPath = exitFullScreenPath;
  viewModel._enterFullScreenPath = enterFullScreenPath;

  const element = document.createElement("button");
  element.type = "button";
  element.className = "cesium-button cesium-fullscreenButton";
  element.setAttribute(
    "data-bind",
    "\
attr: { title: tooltip },\
click: command,\
enable: isFullscreenEnabled,\
cesiumSvgPath: { path: isFullscreen ? _exitFullScreenPath : _enterFullScreenPath, width: 128, height: 128 }"
  );

  container.appendChild(element);

  knockout.applyBindings(viewModel, element);

  this._container = container;
  this._viewModel = viewModel;
  this._element = element;
}

Object.defineProperties(FullscreenButton.prototype, {
  /**
   * Gets the parent container.
   * @memberof FullscreenButton.prototype
   *
   * @type {Element}
   */
  container: {
    get: function () {
      return this._container;
    },
  },

  /**
   * Gets the view model.
   * @memberof FullscreenButton.prototype
   *
   * @type {FullscreenButtonViewModel}
   */
  viewModel: {
    get: function () {
      return this._viewModel;
    },
  },
});

/**
 * @returns {boolean} true if the object has been destroyed, false otherwise.
 */
FullscreenButton.prototype.isDestroyed = function () {
  return false;
};

/**
 * Destroys the widget.  Should be called if permanently
 * removing the widget from layout.
 */
FullscreenButton.prototype.destroy = function () {
  this._viewModel.destroy();

  knockout.cleanNode(this._element);
  this._container.removeChild(this._element);

  return destroyObject(this);
};
export default FullscreenButton;