modal-stack.js 39 KB

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  1. /**
  2. * @fileoverview added by tsickle
  3. * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
  4. */
  5. import { DOCUMENT } from '@angular/common';
  6. import { ApplicationRef, Inject, Injectable, Injector, NgZone, RendererFactory2, TemplateRef } from '@angular/core';
  7. import { Subject } from 'rxjs';
  8. import { ngbFocusTrap } from '../util/focus-trap';
  9. import { ContentRef } from '../util/popup';
  10. import { ScrollBar } from '../util/scrollbar';
  11. import { isDefined, isString } from '../util/util';
  12. import { NgbModalBackdrop } from './modal-backdrop';
  13. import { NgbActiveModal, NgbModalRef } from './modal-ref';
  14. import { NgbModalWindow } from './modal-window';
  15. import * as i0 from "@angular/core";
  16. import * as i1 from "@angular/common";
  17. import * as i2 from "../util/scrollbar";
  18. var NgbModalStack = /** @class */ (function () {
  19. function NgbModalStack(_applicationRef, _injector, _document, _scrollBar, _rendererFactory, _ngZone) {
  20. var _this = this;
  21. this._applicationRef = _applicationRef;
  22. this._injector = _injector;
  23. this._document = _document;
  24. this._scrollBar = _scrollBar;
  25. this._rendererFactory = _rendererFactory;
  26. this._ngZone = _ngZone;
  27. this._activeWindowCmptHasChanged = new Subject();
  28. this._ariaHiddenValues = new Map();
  29. this._backdropAttributes = ['backdropClass'];
  30. this._modalRefs = [];
  31. this._windowAttributes = ['ariaLabelledBy', 'backdrop', 'centered', 'keyboard', 'scrollable', 'size', 'windowClass'];
  32. this._windowCmpts = [];
  33. // Trap focus on active WindowCmpt
  34. this._activeWindowCmptHasChanged.subscribe((/**
  35. * @return {?}
  36. */
  37. function () {
  38. if (_this._windowCmpts.length) {
  39. /** @type {?} */
  40. var activeWindowCmpt = _this._windowCmpts[_this._windowCmpts.length - 1];
  41. ngbFocusTrap(_this._ngZone, activeWindowCmpt.location.nativeElement, _this._activeWindowCmptHasChanged);
  42. _this._revertAriaHidden();
  43. _this._setAriaHidden(activeWindowCmpt.location.nativeElement);
  44. }
  45. }));
  46. }
  47. /**
  48. * @param {?} moduleCFR
  49. * @param {?} contentInjector
  50. * @param {?} content
  51. * @param {?} options
  52. * @return {?}
  53. */
  54. NgbModalStack.prototype.open = /**
  55. * @param {?} moduleCFR
  56. * @param {?} contentInjector
  57. * @param {?} content
  58. * @param {?} options
  59. * @return {?}
  60. */
  61. function (moduleCFR, contentInjector, content, options) {
  62. var _this = this;
  63. /** @type {?} */
  64. var containerEl = isDefined(options.container) ? this._document.querySelector(options.container) : this._document.body;
  65. /** @type {?} */
  66. var renderer = this._rendererFactory.createRenderer(null, null);
  67. /** @type {?} */
  68. var revertPaddingForScrollBar = this._scrollBar.compensate();
  69. /** @type {?} */
  70. var removeBodyClass = (/**
  71. * @return {?}
  72. */
  73. function () {
  74. if (!_this._modalRefs.length) {
  75. renderer.removeClass(_this._document.body, 'modal-open');
  76. _this._revertAriaHidden();
  77. }
  78. });
  79. if (!containerEl) {
  80. throw new Error("The specified modal container \"" + (options.container || 'body') + "\" was not found in the DOM.");
  81. }
  82. /** @type {?} */
  83. var activeModal = new NgbActiveModal();
  84. /** @type {?} */
  85. var contentRef = this._getContentRef(moduleCFR, options.injector || contentInjector, content, activeModal, options);
  86. /** @type {?} */
  87. var backdropCmptRef = options.backdrop !== false ? this._attachBackdrop(moduleCFR, containerEl) : null;
  88. /** @type {?} */
  89. var windowCmptRef = this._attachWindowComponent(moduleCFR, containerEl, contentRef);
  90. /** @type {?} */
  91. var ngbModalRef = new NgbModalRef(windowCmptRef, contentRef, backdropCmptRef, options.beforeDismiss);
  92. this._registerModalRef(ngbModalRef);
  93. this._registerWindowCmpt(windowCmptRef);
  94. ngbModalRef.result.then(revertPaddingForScrollBar, revertPaddingForScrollBar);
  95. ngbModalRef.result.then(removeBodyClass, removeBodyClass);
  96. activeModal.close = (/**
  97. * @param {?} result
  98. * @return {?}
  99. */
  100. function (result) { ngbModalRef.close(result); });
  101. activeModal.dismiss = (/**
  102. * @param {?} reason
  103. * @return {?}
  104. */
  105. function (reason) { ngbModalRef.dismiss(reason); });
  106. this._applyWindowOptions(windowCmptRef.instance, options);
  107. if (this._modalRefs.length === 1) {
  108. renderer.addClass(this._document.body, 'modal-open');
  109. }
  110. if (backdropCmptRef && backdropCmptRef.instance) {
  111. this._applyBackdropOptions(backdropCmptRef.instance, options);
  112. }
  113. return ngbModalRef;
  114. };
  115. /**
  116. * @param {?=} reason
  117. * @return {?}
  118. */
  119. NgbModalStack.prototype.dismissAll = /**
  120. * @param {?=} reason
  121. * @return {?}
  122. */
  123. function (reason) { this._modalRefs.forEach((/**
  124. * @param {?} ngbModalRef
  125. * @return {?}
  126. */
  127. function (ngbModalRef) { return ngbModalRef.dismiss(reason); })); };
  128. /**
  129. * @return {?}
  130. */
  131. NgbModalStack.prototype.hasOpenModals = /**
  132. * @return {?}
  133. */
  134. function () { return this._modalRefs.length > 0; };
  135. /**
  136. * @private
  137. * @param {?} moduleCFR
  138. * @param {?} containerEl
  139. * @return {?}
  140. */
  141. NgbModalStack.prototype._attachBackdrop = /**
  142. * @private
  143. * @param {?} moduleCFR
  144. * @param {?} containerEl
  145. * @return {?}
  146. */
  147. function (moduleCFR, containerEl) {
  148. /** @type {?} */
  149. var backdropFactory = moduleCFR.resolveComponentFactory(NgbModalBackdrop);
  150. /** @type {?} */
  151. var backdropCmptRef = backdropFactory.create(this._injector);
  152. this._applicationRef.attachView(backdropCmptRef.hostView);
  153. containerEl.appendChild(backdropCmptRef.location.nativeElement);
  154. return backdropCmptRef;
  155. };
  156. /**
  157. * @private
  158. * @param {?} moduleCFR
  159. * @param {?} containerEl
  160. * @param {?} contentRef
  161. * @return {?}
  162. */
  163. NgbModalStack.prototype._attachWindowComponent = /**
  164. * @private
  165. * @param {?} moduleCFR
  166. * @param {?} containerEl
  167. * @param {?} contentRef
  168. * @return {?}
  169. */
  170. function (moduleCFR, containerEl, contentRef) {
  171. /** @type {?} */
  172. var windowFactory = moduleCFR.resolveComponentFactory(NgbModalWindow);
  173. /** @type {?} */
  174. var windowCmptRef = windowFactory.create(this._injector, contentRef.nodes);
  175. this._applicationRef.attachView(windowCmptRef.hostView);
  176. containerEl.appendChild(windowCmptRef.location.nativeElement);
  177. return windowCmptRef;
  178. };
  179. /**
  180. * @private
  181. * @param {?} windowInstance
  182. * @param {?} options
  183. * @return {?}
  184. */
  185. NgbModalStack.prototype._applyWindowOptions = /**
  186. * @private
  187. * @param {?} windowInstance
  188. * @param {?} options
  189. * @return {?}
  190. */
  191. function (windowInstance, options) {
  192. this._windowAttributes.forEach((/**
  193. * @param {?} optionName
  194. * @return {?}
  195. */
  196. function (optionName) {
  197. if (isDefined(options[optionName])) {
  198. windowInstance[optionName] = options[optionName];
  199. }
  200. }));
  201. };
  202. /**
  203. * @private
  204. * @param {?} backdropInstance
  205. * @param {?} options
  206. * @return {?}
  207. */
  208. NgbModalStack.prototype._applyBackdropOptions = /**
  209. * @private
  210. * @param {?} backdropInstance
  211. * @param {?} options
  212. * @return {?}
  213. */
  214. function (backdropInstance, options) {
  215. this._backdropAttributes.forEach((/**
  216. * @param {?} optionName
  217. * @return {?}
  218. */
  219. function (optionName) {
  220. if (isDefined(options[optionName])) {
  221. backdropInstance[optionName] = options[optionName];
  222. }
  223. }));
  224. };
  225. /**
  226. * @private
  227. * @param {?} moduleCFR
  228. * @param {?} contentInjector
  229. * @param {?} content
  230. * @param {?} activeModal
  231. * @param {?} options
  232. * @return {?}
  233. */
  234. NgbModalStack.prototype._getContentRef = /**
  235. * @private
  236. * @param {?} moduleCFR
  237. * @param {?} contentInjector
  238. * @param {?} content
  239. * @param {?} activeModal
  240. * @param {?} options
  241. * @return {?}
  242. */
  243. function (moduleCFR, contentInjector, content, activeModal, options) {
  244. if (!content) {
  245. return new ContentRef([]);
  246. }
  247. else if (content instanceof TemplateRef) {
  248. return this._createFromTemplateRef(content, activeModal);
  249. }
  250. else if (isString(content)) {
  251. return this._createFromString(content);
  252. }
  253. else {
  254. return this._createFromComponent(moduleCFR, contentInjector, content, activeModal, options);
  255. }
  256. };
  257. /**
  258. * @private
  259. * @param {?} content
  260. * @param {?} activeModal
  261. * @return {?}
  262. */
  263. NgbModalStack.prototype._createFromTemplateRef = /**
  264. * @private
  265. * @param {?} content
  266. * @param {?} activeModal
  267. * @return {?}
  268. */
  269. function (content, activeModal) {
  270. /** @type {?} */
  271. var context = {
  272. $implicit: activeModal,
  273. close: /**
  274. * @param {?} result
  275. * @return {?}
  276. */
  277. function (result) { activeModal.close(result); },
  278. dismiss: /**
  279. * @param {?} reason
  280. * @return {?}
  281. */
  282. function (reason) { activeModal.dismiss(reason); }
  283. };
  284. /** @type {?} */
  285. var viewRef = content.createEmbeddedView(context);
  286. this._applicationRef.attachView(viewRef);
  287. return new ContentRef([viewRef.rootNodes], viewRef);
  288. };
  289. /**
  290. * @private
  291. * @param {?} content
  292. * @return {?}
  293. */
  294. NgbModalStack.prototype._createFromString = /**
  295. * @private
  296. * @param {?} content
  297. * @return {?}
  298. */
  299. function (content) {
  300. /** @type {?} */
  301. var component = this._document.createTextNode("" + content);
  302. return new ContentRef([[component]]);
  303. };
  304. /**
  305. * @private
  306. * @param {?} moduleCFR
  307. * @param {?} contentInjector
  308. * @param {?} content
  309. * @param {?} context
  310. * @param {?} options
  311. * @return {?}
  312. */
  313. NgbModalStack.prototype._createFromComponent = /**
  314. * @private
  315. * @param {?} moduleCFR
  316. * @param {?} contentInjector
  317. * @param {?} content
  318. * @param {?} context
  319. * @param {?} options
  320. * @return {?}
  321. */
  322. function (moduleCFR, contentInjector, content, context, options) {
  323. /** @type {?} */
  324. var contentCmptFactory = moduleCFR.resolveComponentFactory(content);
  325. /** @type {?} */
  326. var modalContentInjector = Injector.create({ providers: [{ provide: NgbActiveModal, useValue: context }], parent: contentInjector });
  327. /** @type {?} */
  328. var componentRef = contentCmptFactory.create(modalContentInjector);
  329. /** @type {?} */
  330. var componentNativeEl = componentRef.location.nativeElement;
  331. if (options.scrollable) {
  332. ((/** @type {?} */ (componentNativeEl))).classList.add('component-host-scrollable');
  333. }
  334. this._applicationRef.attachView(componentRef.hostView);
  335. // FIXME: we should here get rid of the component nativeElement
  336. // and use `[Array.from(componentNativeEl.childNodes)]` instead and remove the above CSS class.
  337. return new ContentRef([[componentNativeEl]], componentRef.hostView, componentRef);
  338. };
  339. /**
  340. * @private
  341. * @param {?} element
  342. * @return {?}
  343. */
  344. NgbModalStack.prototype._setAriaHidden = /**
  345. * @private
  346. * @param {?} element
  347. * @return {?}
  348. */
  349. function (element) {
  350. var _this = this;
  351. /** @type {?} */
  352. var parent = element.parentElement;
  353. if (parent && element !== this._document.body) {
  354. Array.from(parent.children).forEach((/**
  355. * @param {?} sibling
  356. * @return {?}
  357. */
  358. function (sibling) {
  359. if (sibling !== element && sibling.nodeName !== 'SCRIPT') {
  360. _this._ariaHiddenValues.set(sibling, sibling.getAttribute('aria-hidden'));
  361. sibling.setAttribute('aria-hidden', 'true');
  362. }
  363. }));
  364. this._setAriaHidden(parent);
  365. }
  366. };
  367. /**
  368. * @private
  369. * @return {?}
  370. */
  371. NgbModalStack.prototype._revertAriaHidden = /**
  372. * @private
  373. * @return {?}
  374. */
  375. function () {
  376. this._ariaHiddenValues.forEach((/**
  377. * @param {?} value
  378. * @param {?} element
  379. * @return {?}
  380. */
  381. function (value, element) {
  382. if (value) {
  383. element.setAttribute('aria-hidden', value);
  384. }
  385. else {
  386. element.removeAttribute('aria-hidden');
  387. }
  388. }));
  389. this._ariaHiddenValues.clear();
  390. };
  391. /**
  392. * @private
  393. * @param {?} ngbModalRef
  394. * @return {?}
  395. */
  396. NgbModalStack.prototype._registerModalRef = /**
  397. * @private
  398. * @param {?} ngbModalRef
  399. * @return {?}
  400. */
  401. function (ngbModalRef) {
  402. var _this = this;
  403. /** @type {?} */
  404. var unregisterModalRef = (/**
  405. * @return {?}
  406. */
  407. function () {
  408. /** @type {?} */
  409. var index = _this._modalRefs.indexOf(ngbModalRef);
  410. if (index > -1) {
  411. _this._modalRefs.splice(index, 1);
  412. }
  413. });
  414. this._modalRefs.push(ngbModalRef);
  415. ngbModalRef.result.then(unregisterModalRef, unregisterModalRef);
  416. };
  417. /**
  418. * @private
  419. * @param {?} ngbWindowCmpt
  420. * @return {?}
  421. */
  422. NgbModalStack.prototype._registerWindowCmpt = /**
  423. * @private
  424. * @param {?} ngbWindowCmpt
  425. * @return {?}
  426. */
  427. function (ngbWindowCmpt) {
  428. var _this = this;
  429. this._windowCmpts.push(ngbWindowCmpt);
  430. this._activeWindowCmptHasChanged.next();
  431. ngbWindowCmpt.onDestroy((/**
  432. * @return {?}
  433. */
  434. function () {
  435. /** @type {?} */
  436. var index = _this._windowCmpts.indexOf(ngbWindowCmpt);
  437. if (index > -1) {
  438. _this._windowCmpts.splice(index, 1);
  439. _this._activeWindowCmptHasChanged.next();
  440. }
  441. }));
  442. };
  443. NgbModalStack.decorators = [
  444. { type: Injectable, args: [{ providedIn: 'root' },] }
  445. ];
  446. /** @nocollapse */
  447. NgbModalStack.ctorParameters = function () { return [
  448. { type: ApplicationRef },
  449. { type: Injector },
  450. { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] },
  451. { type: ScrollBar },
  452. { type: RendererFactory2 },
  453. { type: NgZone }
  454. ]; };
  455. /** @nocollapse */ NgbModalStack.ngInjectableDef = i0.ɵɵdefineInjectable({ factory: function NgbModalStack_Factory() { return new NgbModalStack(i0.ɵɵinject(i0.ApplicationRef), i0.ɵɵinject(i0.INJECTOR), i0.ɵɵinject(i1.DOCUMENT), i0.ɵɵinject(i2.ScrollBar), i0.ɵɵinject(i0.RendererFactory2), i0.ɵɵinject(i0.NgZone)); }, token: NgbModalStack, providedIn: "root" });
  456. return NgbModalStack;
  457. }());
  458. export { NgbModalStack };
  459. if (false) {
  460. /**
  461. * @type {?}
  462. * @private
  463. */
  464. NgbModalStack.prototype._activeWindowCmptHasChanged;
  465. /**
  466. * @type {?}
  467. * @private
  468. */
  469. NgbModalStack.prototype._ariaHiddenValues;
  470. /**
  471. * @type {?}
  472. * @private
  473. */
  474. NgbModalStack.prototype._backdropAttributes;
  475. /**
  476. * @type {?}
  477. * @private
  478. */
  479. NgbModalStack.prototype._modalRefs;
  480. /**
  481. * @type {?}
  482. * @private
  483. */
  484. NgbModalStack.prototype._windowAttributes;
  485. /**
  486. * @type {?}
  487. * @private
  488. */
  489. NgbModalStack.prototype._windowCmpts;
  490. /**
  491. * @type {?}
  492. * @private
  493. */
  494. NgbModalStack.prototype._applicationRef;
  495. /**
  496. * @type {?}
  497. * @private
  498. */
  499. NgbModalStack.prototype._injector;
  500. /**
  501. * @type {?}
  502. * @private
  503. */
  504. NgbModalStack.prototype._document;
  505. /**
  506. * @type {?}
  507. * @private
  508. */
  509. NgbModalStack.prototype._scrollBar;
  510. /**
  511. * @type {?}
  512. * @private
  513. */
  514. NgbModalStack.prototype._rendererFactory;
  515. /**
  516. * @type {?}
  517. * @private
  518. */
  519. NgbModalStack.prototype._ngZone;
  520. }
  521. //# 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{DOCUMENT} from '@angular/common';\nimport {\n  ApplicationRef,\n  ComponentFactoryResolver,\n  ComponentRef,\n  Inject,\n  Injectable,\n  Injector,\n  NgZone,\n  RendererFactory2,\n  TemplateRef\n} from '@angular/core';\nimport {Subject} from 'rxjs';\n\nimport {ngbFocusTrap} from '../util/focus-trap';\nimport {ContentRef} from '../util/popup';\nimport {ScrollBar} from '../util/scrollbar';\nimport {isDefined, isString} from '../util/util';\nimport {NgbModalBackdrop} from './modal-backdrop';\nimport {NgbModalOptions} from './modal-config';\nimport {NgbActiveModal, NgbModalRef} from './modal-ref';\nimport {NgbModalWindow} from './modal-window';\n\n@Injectable({providedIn: 'root'})\nexport class NgbModalStack {\n  private _activeWindowCmptHasChanged = new Subject();\n  private _ariaHiddenValues: Map<Element, string> = new Map();\n  private _backdropAttributes = ['backdropClass'];\n  private _modalRefs: NgbModalRef[] = [];\n  private _windowAttributes =\n      ['ariaLabelledBy', 'backdrop', 'centered', 'keyboard', 'scrollable', 'size', 'windowClass'];\n  private _windowCmpts: ComponentRef<NgbModalWindow>[] = [];\n\n  constructor(\n      private _applicationRef: ApplicationRef, private _injector: Injector, @Inject(DOCUMENT) private _document: any,\n      private _scrollBar: ScrollBar, private _rendererFactory: RendererFactory2, private _ngZone: NgZone) {\n    // Trap focus on active WindowCmpt\n    this._activeWindowCmptHasChanged.subscribe(() => {\n      if (this._windowCmpts.length) {\n        const activeWindowCmpt = this._windowCmpts[this._windowCmpts.length - 1];\n        ngbFocusTrap(this._ngZone, activeWindowCmpt.location.nativeElement, this._activeWindowCmptHasChanged);\n        this._revertAriaHidden();\n        this._setAriaHidden(activeWindowCmpt.location.nativeElement);\n      }\n    });\n  }\n\n  open(moduleCFR: ComponentFactoryResolver, contentInjector: Injector, content: any, options): NgbModalRef {\n    const containerEl =\n        isDefined(options.container) ? this._document.querySelector(options.container) : this._document.body;\n    const renderer = this._rendererFactory.createRenderer(null, null);\n\n    const revertPaddingForScrollBar = this._scrollBar.compensate();\n    const removeBodyClass = () => {\n      if (!this._modalRefs.length) {\n        renderer.removeClass(this._document.body, 'modal-open');\n        this._revertAriaHidden();\n      }\n    };\n\n    if (!containerEl) {\n      throw new Error(`The specified modal container \"${options.container || 'body'}\" was not found in the DOM.`);\n    }\n\n    const activeModal = new NgbActiveModal();\n    const contentRef =\n        this._getContentRef(moduleCFR, options.injector || contentInjector, content, activeModal, options);\n\n    let backdropCmptRef: ComponentRef<NgbModalBackdrop> =\n        options.backdrop !== false ? this._attachBackdrop(moduleCFR, containerEl) : null;\n    let windowCmptRef: ComponentRef<NgbModalWindow> = this._attachWindowComponent(moduleCFR, containerEl, contentRef);\n    let ngbModalRef: NgbModalRef = new NgbModalRef(windowCmptRef, contentRef, backdropCmptRef, options.beforeDismiss);\n\n    this._registerModalRef(ngbModalRef);\n    this._registerWindowCmpt(windowCmptRef);\n    ngbModalRef.result.then(revertPaddingForScrollBar, revertPaddingForScrollBar);\n    ngbModalRef.result.then(removeBodyClass, removeBodyClass);\n    activeModal.close = (result: any) => { ngbModalRef.close(result); };\n    activeModal.dismiss = (reason: any) => { ngbModalRef.dismiss(reason); };\n\n    this._applyWindowOptions(windowCmptRef.instance, options);\n    if (this._modalRefs.length === 1) {\n      renderer.addClass(this._document.body, 'modal-open');\n    }\n\n    if (backdropCmptRef && backdropCmptRef.instance) {\n      this._applyBackdropOptions(backdropCmptRef.instance, options);\n    }\n    return ngbModalRef;\n  }\n\n  dismissAll(reason?: any) { this._modalRefs.forEach(ngbModalRef => ngbModalRef.dismiss(reason)); }\n\n  hasOpenModals(): boolean { return this._modalRefs.length > 0; }\n\n  private _attachBackdrop(moduleCFR: ComponentFactoryResolver, containerEl: any): ComponentRef<NgbModalBackdrop> {\n    let backdropFactory = moduleCFR.resolveComponentFactory(NgbModalBackdrop);\n    let backdropCmptRef = backdropFactory.create(this._injector);\n    this._applicationRef.attachView(backdropCmptRef.hostView);\n    containerEl.appendChild(backdropCmptRef.location.nativeElement);\n    return backdropCmptRef;\n  }\n\n  private _attachWindowComponent(moduleCFR: ComponentFactoryResolver, containerEl: any, contentRef: any):\n      ComponentRef<NgbModalWindow> {\n    let windowFactory = moduleCFR.resolveComponentFactory(NgbModalWindow);\n    let windowCmptRef = windowFactory.create(this._injector, contentRef.nodes);\n    this._applicationRef.attachView(windowCmptRef.hostView);\n    containerEl.appendChild(windowCmptRef.location.nativeElement);\n    return windowCmptRef;\n  }\n\n  private _applyWindowOptions(windowInstance: NgbModalWindow, options: Object): void {\n    this._windowAttributes.forEach((optionName: string) => {\n      if (isDefined(options[optionName])) {\n        windowInstance[optionName] = options[optionName];\n      }\n    });\n  }\n\n  private _applyBackdropOptions(backdropInstance: NgbModalBackdrop, options: Object): void {\n    this._backdropAttributes.forEach((optionName: string) => {\n      if (isDefined(options[optionName])) {\n        backdropInstance[optionName] = options[optionName];\n      }\n    });\n  }\n\n  private _getContentRef(\n      moduleCFR: ComponentFactoryResolver, contentInjector: Injector, content: any, activeModal: NgbActiveModal,\n      options: NgbModalOptions): ContentRef {\n    if (!content) {\n      return new ContentRef([]);\n    } else if (content instanceof TemplateRef) {\n      return this._createFromTemplateRef(content, activeModal);\n    } else if (isString(content)) {\n      return this._createFromString(content);\n    } else {\n      return this._createFromComponent(moduleCFR, contentInjector, content, activeModal, options);\n    }\n  }\n\n  private _createFromTemplateRef(content: TemplateRef<any>, activeModal: NgbActiveModal): ContentRef {\n    const context = {\n      $implicit: activeModal,\n      close(result) { activeModal.close(result); },\n      dismiss(reason) { activeModal.dismiss(reason); }\n    };\n    const viewRef = content.createEmbeddedView(context);\n    this._applicationRef.attachView(viewRef);\n    return new ContentRef([viewRef.rootNodes], viewRef);\n  }\n\n  private _createFromString(content: string): ContentRef {\n    const component = this._document.createTextNode(`${content}`);\n    return new ContentRef([[component]]);\n  }\n\n  private _createFromComponent(\n      moduleCFR: ComponentFactoryResolver, contentInjector: Injector, content: any, context: NgbActiveModal,\n      options: NgbModalOptions): ContentRef {\n    const contentCmptFactory = moduleCFR.resolveComponentFactory(content);\n    const modalContentInjector =\n        Injector.create({providers: [{provide: NgbActiveModal, useValue: context}], parent: contentInjector});\n    const componentRef = contentCmptFactory.create(modalContentInjector);\n    const componentNativeEl = componentRef.location.nativeElement;\n    if (options.scrollable) {\n      (componentNativeEl as HTMLElement).classList.add('component-host-scrollable');\n    }\n    this._applicationRef.attachView(componentRef.hostView);\n    // FIXME: we should here get rid of the component nativeElement\n    // and use `[Array.from(componentNativeEl.childNodes)]` instead and remove the above CSS class.\n    return new ContentRef([[componentNativeEl]], componentRef.hostView, componentRef);\n  }\n\n  private _setAriaHidden(element: Element) {\n    const parent = element.parentElement;\n    if (parent && element !== this._document.body) {\n      Array.from(parent.children).forEach(sibling => {\n        if (sibling !== element && sibling.nodeName !== 'SCRIPT') {\n          this._ariaHiddenValues.set(sibling, sibling.getAttribute('aria-hidden'));\n          sibling.setAttribute('aria-hidden', 'true');\n        }\n      });\n\n      this._setAriaHidden(parent);\n    }\n  }\n\n  private _revertAriaHidden() {\n    this._ariaHiddenValues.forEach((value, element) => {\n      if (value) {\n        element.setAttribute('aria-hidden', value);\n      } else {\n        element.removeAttribute('aria-hidden');\n      }\n    });\n    this._ariaHiddenValues.clear();\n  }\n\n  private _registerModalRef(ngbModalRef: NgbModalRef) {\n    const unregisterModalRef = () => {\n      const index = this._modalRefs.indexOf(ngbModalRef);\n      if (index > -1) {\n        this._modalRefs.splice(index, 1);\n      }\n    };\n    this._modalRefs.push(ngbModalRef);\n    ngbModalRef.result.then(unregisterModalRef, unregisterModalRef);\n  }\n\n  private _registerWindowCmpt(ngbWindowCmpt: ComponentRef<NgbModalWindow>) {\n    this._windowCmpts.push(ngbWindowCmpt);\n    this._activeWindowCmptHasChanged.next();\n\n    ngbWindowCmpt.onDestroy(() => {\n      const index = this._windowCmpts.indexOf(ngbWindowCmpt);\n      if (index > -1) {\n        this._windowCmpts.splice(index, 1);\n        this._activeWindowCmptHasChanged.next();\n      }\n    });\n  }\n}\n"]}