ngx-back-button/fesm2022/ngx-back-button.mjs.map

A library for handling a proper angular back button capability

{"version":3,"file":"ngx-back-button.mjs","sources":["../../../projects/ngx-back-button/src/lib/ngx-back-button.const.ts","../../../projects/ngx-back-button/src/lib/ngx-back-button.service.ts","../../../projects/ngx-back-button/src/lib/ngx-back-button.directive.ts","../../../projects/ngx-back-button/src/lib/ngx-back-button.providers.ts","../../../projects/ngx-back-button/src/public-api.ts","../../../projects/ngx-back-button/src/ngx-back-button.ts"],"sourcesContent":["import { InjectionToken } from '@angular/core'\nimport { NgxBackButtonServiceConfig } from './ngx-back-button.interface'\n\nexport const NgxBackButtonServiceProvider = new InjectionToken<NgxBackButtonServiceConfig>(\n  'NgxBackButtonServiceConfig',\n)\n","import { Location } from '@angular/common'\nimport { inject, Injectable, Signal, signal } from '@angular/core'\nimport { NavigationEnd, Router } from '@angular/router'\nimport { filter, skip } from 'rxjs'\nimport { NgxBackButtonServiceProvider } from './ngx-back-button.const'\nimport { NgxBackButtonServiceConfig } from './ngx-back-button.interface'\n\n@Injectable({\n  providedIn: 'root',\n})\nexport class NgxBackButtonService {\n  readonly #router = inject(Router)\n  readonly #location = inject(Location)\n  readonly #rootConfig = inject(NgxBackButtonServiceProvider, { optional: true })\n\n  private _history: string[] = []\n  private _navigatingBack = false\n  private _$nextBackNavigationPath = signal(this._getFallBackNavigationPath())\n\n  readonly $nextBackNavigationPath: Signal<string> = this._$nextBackNavigationPath.asReadonly()\n\n  constructor() {\n    this.#router.events\n      .pipe(\n        filter((e): e is NavigationEnd => e instanceof NavigationEnd),\n        skip(1), // Skip the first event (initial load)\n      )\n      .subscribe((event) => {\n        if (!this._navigatingBack) this._history.push(event.urlAfterRedirects)\n\n        this._updateNextBackNavigationPath()\n        this._navigatingBack = false\n      })\n  }\n\n  getHistory(): string[] {\n    return this._history\n  }\n\n  /**\n   * @param fallback\n   * @param config Optional configuration to override the root configuration (typically from child routes)\n   * @return Boolean: True === Had an history to go back to\n   */\n  back(fallback?: string, config?: NgxBackButtonServiceConfig | null): boolean {\n    this._navigatingBack = true\n\n    const record = this._history.pop()\n    this._updateNextBackNavigationPath(fallback, config)\n\n    if (this._history.length > 0) {\n      this.#location.back()\n      return true\n    } else {\n      this._navigatingBack = false // Give an element to go back to on next navigation\n\n      try {\n        window.history.replaceState(null, '', this._getFallBackNavigationPath(fallback, config))\n      } catch (error) {\n        console.error('NgxBackButton: ' + error)\n      }\n\n      window.history.pushState(null, '', record ?? this.#router.url)\n      this.#location.back()\n      return false\n    }\n  }\n\n  private _getFallBackNavigationPath(\n    fallback?: string,\n    config?: NgxBackButtonServiceConfig | null,\n  ): string {\n    const effectiveConfig = config || this.#rootConfig\n    const rootUrl = effectiveConfig?.rootUrl || ''\n    const fallbackPrefix = effectiveConfig?.fallbackPrefix || ''\n    const fallbackPath = fallback || rootUrl\n\n    if (fallbackPath.startsWith('../')) {\n      return this._resolveRelativeFallbackNavigationPath(fallbackPath)\n    }\n\n    return fallbackPrefix + fallbackPath\n  }\n\n  private _resolveRelativeFallbackNavigationPath(fallback: string): string {\n    const suffixIndex = fallback.search(/[?#]/)\n    const path = suffixIndex === -1 ? fallback : fallback.slice(0, suffixIndex)\n    const suffix = suffixIndex === -1 ? '' : fallback.slice(suffixIndex)\n    const fallbackSegments = path.split('/')\n    let parentSegmentCount = 0\n\n    while (fallbackSegments[0] === '..') {\n      fallbackSegments.shift()\n      parentSegmentCount++\n    }\n\n    const currentPath = this.#router.url.split(/[?#]/, 1)[0]\n    const currentSegments = currentPath.split('/').filter(Boolean)\n    const retainedSegments = currentSegments.slice(\n      0,\n      Math.max(0, currentSegments.length - parentSegmentCount),\n    )\n    const appendedSegments = fallbackSegments.filter((segment) => segment && segment !== '.')\n\n    return `/${[...retainedSegments, ...appendedSegments].join('/')}${suffix}`\n  }\n\n  private _updateNextBackNavigationPath(\n    fallback?: string,\n    config?: NgxBackButtonServiceConfig | null,\n  ): void {\n    const previousHistoryEntry = this._history[this._history.length - 2]\n\n    this._$nextBackNavigationPath.set(\n      previousHistoryEntry ?? this._getFallBackNavigationPath(fallback, config),\n    )\n  }\n}\n","import { Directive, HostListener, inject, Input } from '@angular/core'\nimport { NgxBackButtonServiceProvider } from './ngx-back-button.const'\nimport { NgxBackButtonService } from './ngx-back-button.service'\n\n@Directive({\n  selector: '[ngxBackButton]',\n})\nexport class NgxBackButtonDirective {\n  @Input() ngxBackButton?: string\n\n  readonly #ngxBackButtonService = inject(NgxBackButtonService)\n  readonly #config = inject(NgxBackButtonServiceProvider, { optional: true })\n\n  @HostListener('click')\n  onClick(): void {\n    this.#ngxBackButtonService.back(this.ngxBackButton, this.#config)\n  }\n}\n","import {\n  EnvironmentProviders,\n  inject,\n  makeEnvironmentProviders,\n  provideEnvironmentInitializer,\n} from '@angular/core'\nimport { NgxBackButtonServiceProvider } from './ngx-back-button.const'\nimport { NgxBackButtonServiceConfig } from './ngx-back-button.interface'\nimport { NgxBackButtonService } from './ngx-back-button.service'\n\n/**\n * Internal function to create environment providers for NgxBackButton configuration.\n * @internal\n */\nfunction createNgxBackButtonProviders(config?: NgxBackButtonServiceConfig): EnvironmentProviders {\n  return makeEnvironmentProviders([\n    {\n      provide: NgxBackButtonServiceProvider,\n      useValue: config || {},\n    },\n    provideEnvironmentInitializer(() => inject(NgxBackButtonService)),\n  ])\n}\n\n/**\n * Provides the NgxBackButton service with the given configuration.\n * Use this in your root application providers.\n *\n * When both root and child configurations are provided, the child configuration\n * will override the root configuration for routes under that path, following\n * Angular's hierarchical dependency injection.\n *\n * @param config Configuration for the NgxBackButton service\n * @returns Environment providers for NgxBackButton\n *\n * @example\n * ```typescript\n * bootstrapApplication(AppComponent, {\n *   providers: [\n *     provideNgxBackButton({\n *       rootUrl: '/home',\n *       fallbackPrefix: '/tabs'\n *     })\n *   ]\n * })\n * ```\n */\nexport function provideNgxBackButton(config?: NgxBackButtonServiceConfig): EnvironmentProviders {\n  return createNgxBackButtonProviders(config)\n}\n\n/**\n * Provides child-level configuration for NgxBackButton service.\n * Use this in lazy-loaded route providers to override the root configuration.\n *\n * This configuration will override the root configuration for all components\n * and directives within the route's component tree, following Angular's\n * hierarchical dependency injection.\n *\n * @param config Configuration for the NgxBackButton service at child level\n * @returns Environment providers for NgxBackButton child configuration\n *\n * @example\n * ```typescript\n * export const routes: Routes = [\n *   {\n *     path: 'child',\n *     providers: [\n *       provideNgxBackButtonChild({\n *         rootUrl: '/login'\n *       })\n *     ],\n *     loadComponent: () => import('./child.component')\n *   }\n * ]\n * ```\n */\nexport function provideNgxBackButtonChild(\n  config?: NgxBackButtonServiceConfig,\n): EnvironmentProviders {\n  return createNgxBackButtonProviders(config)\n}\n","/*\n * Public API Surface of ngx-back-button\n */\n\nexport * from './lib/ngx-back-button.const'\nexport * from './lib/ngx-back-button.directive'\nexport * from './lib/ngx-back-button.service'\nexport * from './lib/ngx-back-button.providers'\nexport * from './lib/ngx-back-button.interface'\n","/**\n * Generated bundle index. 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