iframe-proxy | Sunbelt Computer Software

649 lines (576 loc) · 18.1 KB
import * as utils from './util';
import * as service from './service';
import * as models from 'powerbi-models';
import * as hpm from 'http-post-message';
declare global {
  interface Document {
    // Mozilla Fullscreen
    mozCancelFullScreen: Function;
    // Ms Fullscreen
    msExitFullscreen: Function;
  interface HTMLIFrameElement {
    // Mozilla Fullscreen
    mozRequestFullScreen: Function;
    // Ms Fullscreen
    msRequestFullscreen: Function;
 * Base Configuration settings for Power BI embed components
 * @interface IEmbedConfigurationBase
export interface IEmbedConfigurationBase {
  settings?: ISettings;
  embedUrl?: string;
  uniqueId?: string;
  type?: string;
  accessToken?: string;
  tokenType?: models.TokenType;
  groupId?: string;
// TODO: Re-use ILoadConfiguration interface to prevent duplicating properties.
// Current issue is that they are optional when embedding since they can be specificed as attributes but they are required when loading.
 * Configuration settings for Power BI embed components
 * @interface IEmbedConfiguration
export interface IEmbedConfiguration extends IEmbedConfigurationBase {
  id?: string;
  settings?: IEmbedSettings;
  pageName?: string;
  filters?: models.IFilter[];
  pageView?: models.PageView;
  datasetId?: string;
  permissions?: models.Permissions;
  viewMode?: models.ViewMode;
  action?: string;
  dashboardId?: string;
  height?: number;
  width?: number;
  theme?: models.IReportTheme;
export interface IVisualEmbedConfiguration extends IEmbedConfiguration {
  visualName: string;
 * Configuration settings for Power BI QNA embed component
 * @interface IEmbedConfiguration
export interface IQnaEmbedConfiguration extends IEmbedConfigurationBase {
  datasetIds: string[];
  question?: string;
  viewMode?: models.QnaMode;
export interface ILocaleSettings {
  language?: string;
  formatLocale?: string;
export interface ISettings {
  localeSettings?: ILocaleSettings;
export interface IEmbedSettings extends models.ISettings, ISettings {
export interface IQnaSettings extends models.IQnaSettings, ISettings {
export interface IInternalEventHandler<T> {
  test(event: service.IEvent<T>): boolean;
  handle(event: service.ICustomEvent<T>): void;
 * Base class for all Power BI embed components
 * @abstract
 * @class Embed
export abstract class Embed {
  static allowedEvents = ["loaded", "saved", "rendered", "saveAsTriggered", "error", "dataSelected", "buttonClicked"];
  static accessTokenAttribute = 'powerbi-access-token';
  static embedUrlAttribute = 'powerbi-embed-url';
  static nameAttribute = 'powerbi-name';
  static typeAttribute = 'powerbi-type';
  static type: string;
  static maxFrontLoadTimes: number = 2;
  allowedEvents = [];
   * Gets or sets the event handler registered for this embed component.
   * @type {IInternalEventHandler<any>[]}
  eventHandlers: IInternalEventHandler<any>[];
   * Gets or sets the Power BI embed service.
   * @type {service.Service}
  service: service.Service;
   * Gets or sets the HTML element that contains the Power BI embed component.
   * @type {HTMLElement}
  element: HTMLElement;
   * Gets or sets the HTML iframe element that renders the Power BI embed component.
   * @type {HTMLIFrameElement}
  iframe: HTMLIFrameElement;
   * Gets or sets the configuration settings for the Power BI embed component.
   * @type {IEmbedConfigurationBase}
  config: IEmbedConfigurationBase;
   * Gets or sets the configuration settings for creating report.
   * @type {models.IReportCreateConfiguration}
  createConfig: models.IReportCreateConfiguration;
   * Url used in the load request.
  loadPath: string;
   * Url used in the load request.
  phasedLoadPath: string;
   * Type of embed
  embeType: string;
   * Handler function for the 'ready' event
  frontLoadHandler: () => any;
   * Creates an instance of Embed.
   * Note: there is circular reference between embeds and the service, because
   * the service has a list of all embeds on the host page, and each embed has a reference to the service that created it.
   * @param {service.Service} service
   * @param {HTMLElement} element
   * @param {IEmbedConfigurationBase} config
  constructor(service: service.Service, element: HTMLElement, config: IEmbedConfigurationBase, iframe?: HTMLIFrameElement, phasedRender?: boolean) {
    Array.prototype.push.apply(this.allowedEvents, Embed.allowedEvents);
    this.eventHandlers = [];
    this.service = service;
    this.element = element;
    this.iframe = iframe;
    this.embeType = config.type.toLowerCase();
    this.populateConfig(config);
    if(this.embeType === 'create'){
      this.setIframe(false/*set EventListener to call create() on 'load' event*/);
    } else {
      this.setIframe(true/*set EventListener to call load() on 'load' event*/, phasedRender);
   * Sends createReport configuration data.
   * ```javascript
   * createReport({
   *   datasetId: '5dac7a4a-4452-46b3-99f6-a25915e0fe55',
   *   accessToken: 'eyJ0eXA ... TaE2rTSbmg',
   * @param {models.IReportCreateConfiguration} config
   * @returns {Promise<void>}
  createReport(config: models.IReportCreateConfiguration): Promise<void> {
    const errors = models.validateCreateReport(config);
    if (errors) {
      throw errors;
    return this.service.hpm.post<void>("/report/create", config, { uid: this.config.uniqueId, sdkSessionId: this.service.getSdkSessionId() }, this.iframe.contentWindow)
      .then(response => {
        return response.body;
      response => {
        throw response.body;
   * Saves Report.
   * @returns {Promise<void>}
  save(): Promise<void> {
    return this.service.hpm.post<models.IError[]>('/report/save', null, { uid: this.config.uniqueId }, this.iframe.contentWindow)
      .then(response => {
        return response.body;
      .catch(response => {
        throw response.body;
   * SaveAs Report.
   * @returns {Promise<void>}
  saveAs(saveAsParameters: models.ISaveAsParameters): Promise<void> {
    return this.service.hpm.post<models.IError[]>('/report/saveAs', saveAsParameters, { uid: this.config.uniqueId }, this.iframe.contentWindow)
      .then(response => {
        return response.body;
      .catch(response => {
        throw response.body;
   * Sends load configuration data.
   * ```javascript
   * report.load({
   *   type: 'report',
   *   id: '5dac7a4a-4452-46b3-99f6-a25915e0fe55',
   *   accessToken: 'eyJ0eXA ... TaE2rTSbmg',
   *   settings: {
   *     navContentPaneEnabled: false
   *   pageName: "DefaultPage",
   *   filters: [
   *        ...  DefaultReportFilter ...
   *   .catch(error => { ... });
   * @param {models.ILoadConfiguration} config
   * @param {boolean} phasedRender
   * @returns {Promise<void>}
  load(config: IEmbedConfigurationBase, phasedRender?: boolean): Promise<void> {
    const path = phasedRender && config.type === 'report' ? this.phasedLoadPath : this.loadPath;
    return this.service.hpm.post<void>(path, config, { uid: this.config.uniqueId, sdkSessionId: this.service.getSdkSessionId() }, this.iframe.contentWindow)
      .then(response => {
        utils.assign(this.config, config);
        return response.body;
      response => {
        throw response.body;
   * Removes one or more event handlers from the list of handlers.
   * If a reference to the existing handle function is specified, remove the specific handler.
   * If the handler is not specified, remove all handlers for the event name specified.
   * ```javascript
   * report.off('pageChanged')
   * const logHandler = function (event) {
   *    console.log(event);
   * report.off('pageChanged', logHandler);
   * @template T
   * @param {string} eventName
   * @param {service.IEventHandler<T>} [handler]
  off<T>(eventName: string, handler?: service.IEventHandler<T>): void {
    const fakeEvent: service.IEvent<any> = { name: eventName, type: null, id: null, value: null };
    if (handler) {
      utils.remove(eventHandler => eventHandler.test(fakeEvent) && (eventHandler.handle === handler), this.eventHandlers);
      this.element.removeEventListener(eventName, <any>handler);
      const eventHandlersToRemove = this.eventHandlers
        .filter(eventHandler => eventHandler.test(fakeEvent));
      eventHandlersToRemove
        .forEach(eventHandlerToRemove => {
          utils.remove(eventHandler => eventHandler === eventHandlerToRemove, this.eventHandlers);
          this.element.removeEventListener(eventName, <any>eventHandlerToRemove.handle);
        });
   * Adds an event handler for a specific event.
   * ```javascript
   * report.on('pageChanged', (event) => {
   *   console.log('PageChanged: ', event.page.name);
   * @template T
   * @param {string} eventName
   * @param {service.IEventHandler<T>} handler
  on<T>(eventName: string, handler: service.IEventHandler<T>): void {
    if (this.allowedEvents.indexOf(eventName) === -1) {
      throw new Error(`eventName is must be one of ${this.allowedEvents}. You passed: ${eventName}`);
    this.eventHandlers.push({
      test: (event: service.IEvent<T>) => event.name === eventName,
      handle: handler
    this.element.addEventListener(eventName, <any>handler)
   * Reloads embed using existing configuration.
   * E.g. For reports this effectively clears all filters and makes the first page active which simulates resetting a report back to loaded state.
   * ```javascript
   * report.reload();
  reload(): Promise<void> {
    return this.load(this.config);
   * Set accessToken.
   * @returns {Promise<void>}
  setAccessToken(accessToken: string): Promise<void> {
    var embedType = this.config.type;
    embedType = (embedType === 'create' || embedType === 'visual' || embedType === 'qna') ? 'report' : embedType;
    return this.service.hpm.post<models.IError[]>('/' + embedType + '/token', accessToken, { uid: this.config.uniqueId }, this.iframe.contentWindow)
      .then(response => {
        this.config.accessToken = accessToken;
        this.element.setAttribute(Embed.accessTokenAttribute, accessToken);
        this.service.accessToken = accessToken;
        return response.body;
      .catch(response => {
        throw response.body;
   * Gets an access token from the first available location: config, attribute, global.
   * @private
   * @param {string} globalAccessToken
   * @returns {string}
  private getAccessToken(globalAccessToken: string): string {
    const accessToken = this.config.accessToken || this.element.getAttribute(Embed.accessTokenAttribute) || globalAccessToken;
    if (!accessToken) {
      throw new Error(`No access token was found for element. You must specify an access token directly on the element using attribute '${Embed.accessTokenAttribute}' or specify a global token at: powerbi.accessToken.`);
    return accessToken;
   * Populate config for create and load
   * @param {IEmbedConfiguration}
   * @returns {void}
  populateConfig(config: IEmbedConfigurationBase): void {
    this.config = config;
    // TODO: Change when Object.assign is available.
    this.config.uniqueId = this.getUniqueId();
    this.config.embedUrl = this.getEmbedUrl();
    this.config.accessToken = this.getAccessToken(this.service.accessToken);
    this.config.groupId = this.getGroupId();
    this.addLocaleToEmbedUrl(config);
   * Adds locale parameters to embedUrl
   * @private
   * @param {IEmbedConfiguration} config
  private addLocaleToEmbedUrl(config: IEmbedConfiguration): void {
      if (!config.settings) {
        return;
      let localeSettings = config.settings.localeSettings
      if (localeSettings && localeSettings.language) {
        this.config.embedUrl = utils.addParamToUrl(this.config.embedUrl, 'language', localeSettings.language);
      if (localeSettings && localeSettings.formatLocale) {
        this.config.embedUrl = utils.addParamToUrl(this.config.embedUrl, 'formatLocale', localeSettings.formatLocale);
   * Gets an embed url from the first available location: options, attribute.
   * @private
   * @returns {string}
  private getEmbedUrl(): string {
    const embedUrl = this.config.embedUrl || this.element.getAttribute(Embed.embedUrlAttribute);
    if (typeof embedUrl !== 'string' || embedUrl.length === 0) {
      throw new Error(`Embed Url is required, but it was not found. You must provide an embed url either as part of embed configuration or as attribute '${Embed.embedUrlAttribute}'.`);
    return embedUrl;
   * Gets a unique ID from the first available location: options, attribute.
   * If neither is provided generate a unique string.
   * @private
   * @returns {string}
  private getUniqueId(): string {
    return this.config.uniqueId || this.element.getAttribute(Embed.nameAttribute) || utils.createRandomString();
   * Gets the group ID from the first available location: options, embeddedUrl.
   * @private
   * @returns {string}
  private getGroupId(): string {
    return this.config.groupId || Embed.findGroupIdFromEmbedUrl(this.config.embedUrl);
   * Gets the report ID from the first available location: options, attribute.
   * @abstract
   * @returns {string}
  abstract getId(): string;
   * Requests the browser to render the component's iframe in fullscreen mode.
  fullscreen(): void {
    const requestFullScreen = this.iframe.requestFullscreen || this.iframe.msRequestFullscreen || this.iframe.mozRequestFullScreen || this.iframe.webkitRequestFullscreen;
    requestFullScreen.call(this.iframe);
   * Requests the browser to exit fullscreen mode.
  exitFullscreen(): void {
    if (!this.isFullscreen(this.iframe)) {
      return;
    const exitFullscreen = document.exitFullscreen || document.mozCancelFullScreen || document.webkitExitFullscreen || document.msExitFullscreen;
    exitFullscreen.call(document);
   * Returns true if the iframe is rendered in fullscreen mode,
   * otherwise returns false.
   * @private
   * @param {HTMLIFrameElement} iframe
   * @returns {boolean}
  private isFullscreen(iframe: HTMLIFrameElement): boolean {
    const options = ['fullscreenElement', 'webkitFullscreenElement', 'mozFullscreenScreenElement', 'msFullscreenElement'];
    return options.some(option => document[option] === iframe);
   * Validate load and create configuration.
  abstract validate(config: IEmbedConfigurationBase): models.IError[];
   * Sets Iframe for embed
  private setIframe(isLoad: boolean, phasedRender?: boolean): void {
    if(!this.iframe) {
      var iframeContent = document.createElement("iframe");
      var embedUrl = this.config.uniqueId ? utils.addParamToUrl(this.config.embedUrl, 'uid', this.config.uniqueId) : this.config.embedUrl;
      iframeContent.style.width = '100%';
      iframeContent.style.height = '100%';
      iframeContent.setAttribute("src", embedUrl);
      iframeContent.setAttribute("scrolling", "no");
      iframeContent.setAttribute("allowfullscreen", "true");
      var node = this.element;
      while(node.firstChild) {
          node.removeChild(node.firstChild);
      node.appendChild(iframeContent);
      this.iframe = <HTMLIFrameElement>node.firstChild;
    if (isLoad) {
      const errors = this.validate(this.config);
      if (errors) {
        throw errors;
      this.iframe.addEventListener('load', () => this.load(this.config, phasedRender), false);
      if (this.service.getNumberOfComponents() <= Embed.maxFrontLoadTimes) {
        this.frontLoadHandler = () => this.frontLoadSendConfig(this.config);
        // 'ready' event is fired by the embedded element (not by the iframe)
        this.element.addEventListener('ready', this.frontLoadHandler, false);
    } else {
      this.iframe.addEventListener('load', () => this.createReport(this.createConfig), false);
   * Sets Iframe's title
  setComponentTitle(title: string): void {
    if(!this.iframe) {
      return;
    if(title == null) {
      this.iframe.removeAttribute("title");
    } else {
      this.iframe.setAttribute("title", title);
   * Sets element's tabindex attribute
  setComponentTabIndex(tabIndex?: number): void {
    if(!this.element) {
      return;
    this.element.setAttribute("tabindex", (tabIndex == null) ? "0" : tabIndex.toString());
   * Removes element's tabindex attribute
  removeComponentTabIndex(tabIndex?: number): void {
    if(!this.element) {
      return;
    this.element.removeAttribute("tabindex");
   * Adds the ability to get groupId from url.
   * By extracting the ID we can ensure that the ID is always explicitly provided as part of the load configuration.
   * @static
   * @param {string} url
   * @returns {string}
  static findGroupIdFromEmbedUrl(url: string): string {
      const groupIdRegEx = /groupId="?([^&]+)"?/
      const groupIdMatch = url.match(groupIdRegEx);
      let groupId;
      if (groupIdMatch) {
          groupId = groupIdMatch[1];
      return groupId;
   * Sends the config for front load calls, after 'ready' message is received from the iframe
  private frontLoadSendConfig(config: IEmbedConfigurationBase): Promise<void> {
    const errors = this.validate(config);
    if (errors) {
      throw errors;
    // contentWindow must be initialized
    if (this.iframe.contentWindow == null)
        return;
    return this.service.hpm.post<void>("/frontload/config", config, { uid: this.config.uniqueId }, this.iframe.contentWindow).then(response => {
      return response.body;
    response => {
      throw response.body;
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