NgxNavigationTrigger

NgxNavigationTrigger allows you to know if the current page was trigged by either an 'imperative', 'backward' or 'forward' navigation.

View the demo

Installation

npm install ngx-navigation-trigger --save

Usage

Step 01: Import the NgxNavigationTriggerModule to your module.

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';

import { AppComponent } from './app.component';

// Import NgxNavigationTriggerModule
import { NgxNavigationTriggerModule } from 'ngx-navigation-trigger';

@NgModule({
  declarations: [AppComponent],
  imports: [
    BrowserModule,
    NgxNavigationTriggerModule // Import NgxNavigationTriggerModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Step 02: Use the NavigationTriggerService in your component, directive or service file. For example:

app.component.ts

import { Component, OnInit } from '@angular/core';
import { NavigationTriggerService } from 'ngx-navigation-trigger';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent implements OnInit {

  constructor(private navigationTriggerService: NavigationTriggerService) { }

  ngOnInit(): void {
    this.navigationTriggerService.eventUrlChanged.subscribe((value) => {
      const currentPageNavigationTrigger = value;
      console.log({ currentPageNavigationTrigger });
    });
  }
}

Documentation

NavigationTriggerService class

class NavigationTriggerService {
    /**
     * Emit the `NavigationTrigger` of the the current page.
     */
    eventUrlChanged: Observable<NavigationTrigger>;
}

NavigationTrigger enumeration

enum NavigationTrigger {
  IMPERATIVE = 'imperative',
  BACKWARD = 'backward',
  FORWARD = 'forward'
}

Known issue:

• Does not support/work (to differenciate 'backward' or 'forward') when user right-clicks on browser back- or forward button and then clicks on an item.
  • PS: Pull requests to fix it are welcome.

License

MIT