nav.js 32 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 { Attribute, ChangeDetectorRef, ContentChildren, Directive, ElementRef, EventEmitter, forwardRef, Inject, Input, Output, QueryList, TemplateRef } from '@angular/core';
  6. import { isDefined } from '../util/util';
  7. import { NgbNavConfig } from './nav-config';
  8. /** @type {?} */
  9. var isValidNavId = (/**
  10. * @param {?} id
  11. * @return {?}
  12. */
  13. function (id) { return isDefined(id) && id !== ''; });
  14. var ɵ0 = isValidNavId;
  15. /** @type {?} */
  16. var navCounter = 0;
  17. /**
  18. * Context passed to the nav content template.
  19. *
  20. * See [this demo](#/components/nav/examples#keep-content) as the example.
  21. *
  22. * \@since 5.2.0
  23. * @record
  24. */
  25. export function NgbNavContentContext() { }
  26. if (false) {
  27. /**
  28. * If `true`, current nav content is visible and active
  29. * @type {?}
  30. */
  31. NgbNavContentContext.prototype.$implicit;
  32. }
  33. /**
  34. * This directive must be used to wrap content to be displayed in the nav.
  35. *
  36. * \@since 5.2.0
  37. */
  38. var NgbNavContent = /** @class */ (function () {
  39. function NgbNavContent(templateRef) {
  40. this.templateRef = templateRef;
  41. }
  42. NgbNavContent.decorators = [
  43. { type: Directive, args: [{ selector: 'ng-template[ngbNavContent]' },] }
  44. ];
  45. /** @nocollapse */
  46. NgbNavContent.ctorParameters = function () { return [
  47. { type: TemplateRef }
  48. ]; };
  49. return NgbNavContent;
  50. }());
  51. export { NgbNavContent };
  52. if (false) {
  53. /** @type {?} */
  54. NgbNavContent.prototype.templateRef;
  55. }
  56. /**
  57. * The directive used to group nav link and related nav content. As well as set nav identifier and some options.
  58. *
  59. * \@since 5.2.0
  60. */
  61. var NgbNavItem = /** @class */ (function () {
  62. function NgbNavItem(nav, elementRef) {
  63. this.elementRef = elementRef;
  64. /**
  65. * If `true`, the current nav item is disabled and can't be toggled by user.
  66. *
  67. * Nevertheless disabled nav can be selected programmatically via the `.select()` method and the `[activeId]` binding.
  68. */
  69. this.disabled = false;
  70. // TODO: cf https://github.com/angular/angular/issues/30106
  71. this._nav = nav;
  72. }
  73. /**
  74. * @return {?}
  75. */
  76. NgbNavItem.prototype.ngAfterContentChecked = /**
  77. * @return {?}
  78. */
  79. function () {
  80. // We are using @ContentChildren instead of @ContentChild as in the Angular version being used
  81. // only @ContentChildren allows us to specify the {descendants: false} option.
  82. // Without {descendants: false} we are hitting bugs described in:
  83. // https://github.com/ng-bootstrap/ng-bootstrap/issues/2240
  84. this.contentTpl = this.contentTpls.first;
  85. };
  86. /**
  87. * @return {?}
  88. */
  89. NgbNavItem.prototype.ngOnInit = /**
  90. * @return {?}
  91. */
  92. function () {
  93. if (!isDefined(this.domId)) {
  94. this.domId = "ngb-nav-" + navCounter++;
  95. }
  96. };
  97. Object.defineProperty(NgbNavItem.prototype, "active", {
  98. get: /**
  99. * @return {?}
  100. */
  101. function () { return this._nav.activeId === this.id; },
  102. enumerable: true,
  103. configurable: true
  104. });
  105. Object.defineProperty(NgbNavItem.prototype, "id", {
  106. get: /**
  107. * @return {?}
  108. */
  109. function () { return isValidNavId(this._id) ? this._id : this.domId; },
  110. enumerable: true,
  111. configurable: true
  112. });
  113. Object.defineProperty(NgbNavItem.prototype, "panelDomId", {
  114. get: /**
  115. * @return {?}
  116. */
  117. function () { return this.domId + "-panel"; },
  118. enumerable: true,
  119. configurable: true
  120. });
  121. /**
  122. * @return {?}
  123. */
  124. NgbNavItem.prototype.isPanelInDom = /**
  125. * @return {?}
  126. */
  127. function () {
  128. return (isDefined(this.destroyOnHide) ? !this.destroyOnHide : !this._nav.destroyOnHide) || this.active;
  129. };
  130. NgbNavItem.decorators = [
  131. { type: Directive, args: [{ selector: '[ngbNavItem]', exportAs: 'ngbNavItem', host: { '[class.nav-item]': 'true' } },] }
  132. ];
  133. /** @nocollapse */
  134. NgbNavItem.ctorParameters = function () { return [
  135. { type: undefined, decorators: [{ type: Inject, args: [forwardRef((/**
  136. * @return {?}
  137. */
  138. function () { return NgbNav; })),] }] },
  139. { type: ElementRef }
  140. ]; };
  141. NgbNavItem.propDecorators = {
  142. destroyOnHide: [{ type: Input }],
  143. disabled: [{ type: Input }],
  144. domId: [{ type: Input }],
  145. _id: [{ type: Input, args: ['ngbNavItem',] }],
  146. contentTpls: [{ type: ContentChildren, args: [NgbNavContent, { descendants: false },] }]
  147. };
  148. return NgbNavItem;
  149. }());
  150. export { NgbNavItem };
  151. if (false) {
  152. /**
  153. * @type {?}
  154. * @private
  155. */
  156. NgbNavItem.prototype._nav;
  157. /**
  158. * If `true`, non-active current nav item content will be removed from DOM
  159. * Otherwise it will just be hidden
  160. * @type {?}
  161. */
  162. NgbNavItem.prototype.destroyOnHide;
  163. /**
  164. * If `true`, the current nav item is disabled and can't be toggled by user.
  165. *
  166. * Nevertheless disabled nav can be selected programmatically via the `.select()` method and the `[activeId]` binding.
  167. * @type {?}
  168. */
  169. NgbNavItem.prototype.disabled;
  170. /**
  171. * The id used for the DOM elements.
  172. * Must be unique inside the document in case you have multiple `ngbNav`s on the page.
  173. *
  174. * Autogenerated as `ngb-nav-XXX` if not provided.
  175. * @type {?}
  176. */
  177. NgbNavItem.prototype.domId;
  178. /**
  179. * The id used as a model for active nav.
  180. * It can be anything, but must be unique inside one `ngbNav`.
  181. *
  182. * The only limitation is that it is not possible to have the `''` (empty string) as id,
  183. * because ` ngbNavItem `, `ngbNavItem=''` and `[ngbNavItem]="''"` are indistinguishable
  184. * @type {?}
  185. */
  186. NgbNavItem.prototype._id;
  187. /** @type {?} */
  188. NgbNavItem.prototype.contentTpl;
  189. /** @type {?} */
  190. NgbNavItem.prototype.contentTpls;
  191. /** @type {?} */
  192. NgbNavItem.prototype.elementRef;
  193. }
  194. /**
  195. * A nav directive that helps with implementing tabbed navigation components.
  196. *
  197. * \@since 5.2.0
  198. */
  199. var NgbNav = /** @class */ (function () {
  200. function NgbNav(role, config, _cd) {
  201. this.role = role;
  202. this._cd = _cd;
  203. /**
  204. * The event emitted after the active nav changes
  205. * The payload of the event is the newly active nav id
  206. *
  207. * If you want to prevent nav change, you should use `(navChange)` event
  208. */
  209. this.activeIdChange = new EventEmitter();
  210. /**
  211. * The nav change event emitted right before the nav change happens on user click.
  212. *
  213. * This event won't be emitted if nav is changed programmatically via `[activeId]` or `.select()`.
  214. *
  215. * See [`NgbNavChangeEvent`](#/components/nav/api#NgbNavChangeEvent) for payload details.
  216. */
  217. this.navChange = new EventEmitter();
  218. this.destroyOnHide = config.destroyOnHide;
  219. this.orientation = config.orientation;
  220. this.roles = config.roles;
  221. }
  222. /**
  223. * @param {?} item
  224. * @return {?}
  225. */
  226. NgbNav.prototype.click = /**
  227. * @param {?} item
  228. * @return {?}
  229. */
  230. function (item) {
  231. if (!item.disabled) {
  232. this._updateActiveId(item.id);
  233. }
  234. };
  235. /**
  236. * Selects the nav with the given id and shows its associated pane.
  237. * Any other nav that was previously selected becomes unselected and its associated pane is hidden.
  238. */
  239. /**
  240. * Selects the nav with the given id and shows its associated pane.
  241. * Any other nav that was previously selected becomes unselected and its associated pane is hidden.
  242. * @param {?} id
  243. * @return {?}
  244. */
  245. NgbNav.prototype.select = /**
  246. * Selects the nav with the given id and shows its associated pane.
  247. * Any other nav that was previously selected becomes unselected and its associated pane is hidden.
  248. * @param {?} id
  249. * @return {?}
  250. */
  251. function (id) { this._updateActiveId(id, false); };
  252. /**
  253. * @return {?}
  254. */
  255. NgbNav.prototype.ngAfterContentInit = /**
  256. * @return {?}
  257. */
  258. function () {
  259. if (!isDefined(this.activeId)) {
  260. /** @type {?} */
  261. var nextId = this.items.first ? this.items.first.id : null;
  262. if (isValidNavId(nextId)) {
  263. this._updateActiveId(nextId, false);
  264. this._cd.detectChanges();
  265. }
  266. }
  267. };
  268. /**
  269. * @private
  270. * @param {?} nextId
  271. * @param {?=} emitNavChange
  272. * @return {?}
  273. */
  274. NgbNav.prototype._updateActiveId = /**
  275. * @private
  276. * @param {?} nextId
  277. * @param {?=} emitNavChange
  278. * @return {?}
  279. */
  280. function (nextId, emitNavChange) {
  281. if (emitNavChange === void 0) { emitNavChange = true; }
  282. if (this.activeId !== nextId) {
  283. /** @type {?} */
  284. var defaultPrevented_1 = false;
  285. if (emitNavChange) {
  286. this.navChange.emit({ activeId: this.activeId, nextId: nextId, preventDefault: (/**
  287. * @return {?}
  288. */
  289. function () { defaultPrevented_1 = true; }) });
  290. }
  291. if (!defaultPrevented_1) {
  292. this.activeId = nextId;
  293. this.activeIdChange.emit(nextId);
  294. }
  295. }
  296. };
  297. NgbNav.decorators = [
  298. { type: Directive, args: [{
  299. selector: '[ngbNav]',
  300. exportAs: 'ngbNav',
  301. host: {
  302. '[class.nav]': 'true',
  303. '[class.flex-column]': "orientation === 'vertical'",
  304. '[attr.aria-orientation]': "orientation === 'vertical' && roles === 'tablist' ? 'vertical' : undefined",
  305. '[attr.role]': "role ? role : roles ? 'tablist' : undefined",
  306. }
  307. },] }
  308. ];
  309. /** @nocollapse */
  310. NgbNav.ctorParameters = function () { return [
  311. { type: String, decorators: [{ type: Attribute, args: ['role',] }] },
  312. { type: NgbNavConfig },
  313. { type: ChangeDetectorRef }
  314. ]; };
  315. NgbNav.propDecorators = {
  316. activeId: [{ type: Input }],
  317. activeIdChange: [{ type: Output }],
  318. destroyOnHide: [{ type: Input }],
  319. orientation: [{ type: Input }],
  320. roles: [{ type: Input }],
  321. items: [{ type: ContentChildren, args: [NgbNavItem,] }],
  322. navChange: [{ type: Output }]
  323. };
  324. return NgbNav;
  325. }());
  326. export { NgbNav };
  327. if (false) {
  328. /**
  329. * The id of the nav that should be active
  330. *
  331. * You could also use the `.select()` method and the `(navChange)` event
  332. * @type {?}
  333. */
  334. NgbNav.prototype.activeId;
  335. /**
  336. * The event emitted after the active nav changes
  337. * The payload of the event is the newly active nav id
  338. *
  339. * If you want to prevent nav change, you should use `(navChange)` event
  340. * @type {?}
  341. */
  342. NgbNav.prototype.activeIdChange;
  343. /**
  344. * If `true`, non-active nav content will be removed from DOM
  345. * Otherwise it will just be hidden
  346. * @type {?}
  347. */
  348. NgbNav.prototype.destroyOnHide;
  349. /**
  350. * The orientation of navs.
  351. *
  352. * Using `vertical` will also add the `aria-orientation` attribute
  353. * @type {?}
  354. */
  355. NgbNav.prototype.orientation;
  356. /**
  357. * Role attribute generating strategy:
  358. * - `false` - no role attributes will be generated
  359. * - `'tablist'` - 'tablist', 'tab' and 'tabpanel' will be generated (default)
  360. * @type {?}
  361. */
  362. NgbNav.prototype.roles;
  363. /** @type {?} */
  364. NgbNav.prototype.items;
  365. /**
  366. * The nav change event emitted right before the nav change happens on user click.
  367. *
  368. * This event won't be emitted if nav is changed programmatically via `[activeId]` or `.select()`.
  369. *
  370. * See [`NgbNavChangeEvent`](#/components/nav/api#NgbNavChangeEvent) for payload details.
  371. * @type {?}
  372. */
  373. NgbNav.prototype.navChange;
  374. /** @type {?} */
  375. NgbNav.prototype.role;
  376. /**
  377. * @type {?}
  378. * @private
  379. */
  380. NgbNav.prototype._cd;
  381. }
  382. /**
  383. * A directive to put on the nav link.
  384. *
  385. * \@since 5.2.0
  386. */
  387. var NgbNavLink = /** @class */ (function () {
  388. function NgbNavLink(role, navItem, nav) {
  389. this.role = role;
  390. this.navItem = navItem;
  391. this.nav = nav;
  392. }
  393. /**
  394. * @return {?}
  395. */
  396. NgbNavLink.prototype.hasNavItemClass = /**
  397. * @return {?}
  398. */
  399. function () {
  400. // with alternative markup we have to add `.nav-item` class, because `ngbNavItem` is on the ng-container
  401. return this.navItem.elementRef.nativeElement.nodeType === Node.COMMENT_NODE;
  402. };
  403. NgbNavLink.decorators = [
  404. { type: Directive, args: [{
  405. selector: 'a[ngbNavLink]',
  406. host: {
  407. '[id]': 'navItem.domId',
  408. '[class.nav-link]': 'true',
  409. '[class.nav-item]': 'hasNavItemClass()',
  410. '[attr.role]': "role ? role : nav.roles ? 'tab' : undefined",
  411. 'href': '',
  412. '[class.active]': 'navItem.active',
  413. '[class.disabled]': 'navItem.disabled',
  414. '[attr.tabindex]': 'navItem.disabled ? -1 : undefined',
  415. '[attr.aria-controls]': 'navItem.isPanelInDom() ? navItem.panelDomId : null',
  416. '[attr.aria-selected]': 'navItem.active',
  417. '[attr.aria-disabled]': 'navItem.disabled',
  418. '(click)': 'nav.click(navItem); $event.preventDefault()'
  419. }
  420. },] }
  421. ];
  422. /** @nocollapse */
  423. NgbNavLink.ctorParameters = function () { return [
  424. { type: String, decorators: [{ type: Attribute, args: ['role',] }] },
  425. { type: NgbNavItem },
  426. { type: NgbNav }
  427. ]; };
  428. return NgbNavLink;
  429. }());
  430. export { NgbNavLink };
  431. if (false) {
  432. /** @type {?} */
  433. NgbNavLink.prototype.role;
  434. /** @type {?} */
  435. NgbNavLink.prototype.navItem;
  436. /** @type {?} */
  437. NgbNavLink.prototype.nav;
  438. }
  439. /**
  440. * The payload of the change event emitted right before the nav change happens on user click.
  441. *
  442. * This event won't be emitted if nav is changed programmatically via `[activeId]` or `.select()`.
  443. *
  444. * \@since 5.2.0
  445. * @record
  446. */
  447. export function NgbNavChangeEvent() { }
  448. if (false) {
  449. /**
  450. * Id of the currently active nav.
  451. * @type {?}
  452. */
  453. NgbNavChangeEvent.prototype.activeId;
  454. /**
  455. * Id of the newly selected nav.
  456. * @type {?}
  457. */
  458. NgbNavChangeEvent.prototype.nextId;
  459. /**
  460. * Function that will prevent nav change if called.
  461. * @type {?}
  462. */
  463. NgbNavChangeEvent.prototype.preventDefault;
  464. }
  465. export { ɵ0 };
  466. //# 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{\n  AfterContentChecked,\n  AfterContentInit,\n  Attribute,\n  ChangeDetectorRef,\n  ContentChildren,\n  Directive,\n  ElementRef,\n  EventEmitter,\n  forwardRef,\n  Inject,\n  Input,\n  OnInit,\n  Output,\n  QueryList,\n  TemplateRef\n} from '@angular/core';\nimport {isDefined} from '../util/util';\nimport {NgbNavConfig} from './nav-config';\n\nconst isValidNavId = (id: any) => isDefined(id) && id !== '';\n\nlet navCounter = 0;\n\n/**\n * Context passed to the nav content template.\n *\n * See [this demo](#/components/nav/examples#keep-content) as the example.\n *\n * @since 5.2.0\n */\nexport interface NgbNavContentContext {\n  /**\n   * If `true`, current nav content is visible and active\n   */\n  $implicit: boolean;\n}\n\n\n/**\n * This directive must be used to wrap content to be displayed in the nav.\n *\n * @since 5.2.0\n */\n@Directive({selector: 'ng-template[ngbNavContent]'})\nexport class NgbNavContent {\n  constructor(public templateRef: TemplateRef<any>) {}\n}\n\n\n/**\n * The directive used to group nav link and related nav content. As well as set nav identifier and some options.\n *\n * @since 5.2.0\n */\n@Directive({selector: '[ngbNavItem]', exportAs: 'ngbNavItem', host: {'[class.nav-item]': 'true'}})\nexport class NgbNavItem implements AfterContentChecked, OnInit {\n  private _nav: NgbNav;\n\n  /**\n   * If `true`, non-active current nav item content will be removed from DOM\n   * Otherwise it will just be hidden\n   */\n  @Input() destroyOnHide;\n\n  /**\n   * If `true`, the current nav item is disabled and can't be toggled by user.\n   *\n   * Nevertheless disabled nav can be selected programmatically via the `.select()` method and the `[activeId]` binding.\n   */\n  @Input() disabled = false;\n\n  /**\n   * The id used for the DOM elements.\n   * Must be unique inside the document in case you have multiple `ngbNav`s on the page.\n   *\n   * Autogenerated as `ngb-nav-XXX` if not provided.\n   */\n  @Input() domId: string;\n\n  /**\n   * The id used as a model for active nav.\n   * It can be anything, but must be unique inside one `ngbNav`.\n   *\n   * The only limitation is that it is not possible to have the `''` (empty string) as id,\n   * because ` ngbNavItem `, `ngbNavItem=''` and `[ngbNavItem]=\"''\"` are indistinguishable\n   */\n  @Input('ngbNavItem') _id: any;\n\n  contentTpl: NgbNavContent | null;\n\n  @ContentChildren(NgbNavContent, {descendants: false}) contentTpls: QueryList<NgbNavContent>;\n\n  constructor(@Inject(forwardRef(() => NgbNav)) nav, public elementRef: ElementRef<any>) {\n    // TODO: cf https://github.com/angular/angular/issues/30106\n    this._nav = nav;\n  }\n\n  ngAfterContentChecked() {\n    // We are using @ContentChildren instead of @ContentChild as in the Angular version being used\n    // only @ContentChildren allows us to specify the {descendants: false} option.\n    // Without {descendants: false} we are hitting bugs described in:\n    // https://github.com/ng-bootstrap/ng-bootstrap/issues/2240\n    this.contentTpl = this.contentTpls.first;\n  }\n\n  ngOnInit() {\n    if (!isDefined(this.domId)) {\n      this.domId = `ngb-nav-${navCounter++}`;\n    }\n  }\n\n  get active() { return this._nav.activeId === this.id; }\n\n  get id() { return isValidNavId(this._id) ? this._id : this.domId; }\n\n  get panelDomId() { return `${this.domId}-panel`; }\n\n  isPanelInDom() {\n    return (isDefined(this.destroyOnHide) ? !this.destroyOnHide : !this._nav.destroyOnHide) || this.active;\n  }\n}\n\n\n/**\n * A nav directive that helps with implementing tabbed navigation components.\n *\n * @since 5.2.0\n */\n@Directive({\n  selector: '[ngbNav]',\n  exportAs: 'ngbNav',\n  host: {\n    '[class.nav]': 'true',\n    '[class.flex-column]': `orientation === 'vertical'`,\n    '[attr.aria-orientation]': `orientation === 'vertical' && roles === 'tablist' ? 'vertical' : undefined`,\n    '[attr.role]': `role ? role : roles ? 'tablist' : undefined`,\n  }\n})\nexport class NgbNav implements AfterContentInit {\n  /**\n   * The id of the nav that should be active\n   *\n   * You could also use the `.select()` method and the `(navChange)` event\n   */\n  @Input() activeId: any;\n\n  /**\n   * The event emitted after the active nav changes\n   * The payload of the event is the newly active nav id\n   *\n   * If you want to prevent nav change, you should use `(navChange)` event\n   */\n  @Output() activeIdChange = new EventEmitter<any>();\n\n  /**\n   * If `true`, non-active nav content will be removed from DOM\n   * Otherwise it will just be hidden\n   */\n  @Input() destroyOnHide;\n\n  /**\n   * The orientation of navs.\n   *\n   * Using `vertical` will also add the `aria-orientation` attribute\n   */\n  @Input() orientation: 'horizontal' | 'vertical';\n\n  /**\n   * Role attribute generating strategy:\n   * - `false` - no role attributes will be generated\n   * - `'tablist'` - 'tablist', 'tab' and 'tabpanel' will be generated (default)\n   */\n  @Input() roles: 'tablist' | false;\n\n  @ContentChildren(NgbNavItem) items: QueryList<NgbNavItem>;\n\n  constructor(@Attribute('role') public role: string, config: NgbNavConfig, private _cd: ChangeDetectorRef) {\n    this.destroyOnHide = config.destroyOnHide;\n    this.orientation = config.orientation;\n    this.roles = config.roles;\n  }\n\n  /**\n   * The nav change event emitted right before the nav change happens on user click.\n   *\n   * This event won't be emitted if nav is changed programmatically via `[activeId]` or `.select()`.\n   *\n   * See [`NgbNavChangeEvent`](#/components/nav/api#NgbNavChangeEvent) for payload details.\n   */\n  @Output() navChange = new EventEmitter<NgbNavChangeEvent>();\n\n  click(item: NgbNavItem) {\n    if (!item.disabled) {\n      this._updateActiveId(item.id);\n    }\n  }\n\n  /**\n   * Selects the nav with the given id and shows its associated pane.\n   * Any other nav that was previously selected becomes unselected and its associated pane is hidden.\n   */\n  select(id: any) { this._updateActiveId(id, false); }\n\n  ngAfterContentInit() {\n    if (!isDefined(this.activeId)) {\n      const nextId = this.items.first ? this.items.first.id : null;\n      if (isValidNavId(nextId)) {\n        this._updateActiveId(nextId, false);\n        this._cd.detectChanges();\n      }\n    }\n  }\n\n  private _updateActiveId(nextId: any, emitNavChange = true) {\n    if (this.activeId !== nextId) {\n      let defaultPrevented = false;\n\n      if (emitNavChange) {\n        this.navChange.emit({activeId: this.activeId, nextId, preventDefault: () => { defaultPrevented = true; }});\n      }\n\n      if (!defaultPrevented) {\n        this.activeId = nextId;\n        this.activeIdChange.emit(nextId);\n      }\n    }\n  }\n}\n\n\n/**\n * A directive to put on the nav link.\n *\n * @since 5.2.0\n */\n@Directive({\n  selector: 'a[ngbNavLink]',\n  host: {\n    '[id]': 'navItem.domId',\n    '[class.nav-link]': 'true',\n    '[class.nav-item]': 'hasNavItemClass()',\n    '[attr.role]': `role ? role : nav.roles ? 'tab' : undefined`,\n    'href': '',\n    '[class.active]': 'navItem.active',\n    '[class.disabled]': 'navItem.disabled',\n    '[attr.tabindex]': 'navItem.disabled ? -1 : undefined',\n    '[attr.aria-controls]': 'navItem.isPanelInDom() ? navItem.panelDomId : null',\n    '[attr.aria-selected]': 'navItem.active',\n    '[attr.aria-disabled]': 'navItem.disabled',\n    '(click)': 'nav.click(navItem); $event.preventDefault()'\n  }\n})\nexport class NgbNavLink {\n  constructor(@Attribute('role') public role: string, public navItem: NgbNavItem, public nav: NgbNav) {}\n\n  hasNavItemClass() {\n    // with alternative markup we have to add `.nav-item` class, because `ngbNavItem` is on the ng-container\n    return this.navItem.elementRef.nativeElement.nodeType === Node.COMMENT_NODE;\n  }\n}\n\n\n/**\n * The payload of the change event emitted right before the nav change happens on user click.\n *\n * This event won't be emitted if nav is changed programmatically via `[activeId]` or `.select()`.\n *\n * @since 5.2.0\n */\nexport interface NgbNavChangeEvent {\n  /**\n   * Id of the currently active nav.\n   */\n  activeId: any;\n\n  /**\n   * Id of the newly selected nav.\n   */\n  nextId: any;\n\n  /**\n   * Function that will prevent nav change if called.\n   */\n  preventDefault: () => void;\n}\n"]}