Dynamic tab navigation system using Angular 2

Question

I want to create a dynamic tabs navigation system using Angular 2.

Basically I want to first display a single tab that contains a single component, containing clickable objects (like links, buttons...).

I would like that a click on one of those links adds a new tab, and that a click on each tab (the initial one and the newly created tab) displays a corresponding component in display zone (router-outlet) below.

This is what I've tried so far:

app.component.ts (Root component and "tabs container):

import { Component, OnInit } from '@angular/core';
import { TabComponent } from './tab/tab.component';
import { FirstComponent } from './test/first.component';
import { SecondComponent } from './test/second.component';
import { ThirdComponent } from './test/third.component';
import { ROUTER_DIRECTIVES } from '@angular/router';

@Component({
  selector: 'my-app',
  templateUrl: './app/app.component.html',
  directives: [TabComponent, ROUTER_DIRECTIVES, FirstComponent, SecondComponent, ThirdComponent],
})

export class AppComponent implements OnInit{ 

	tabList: any[];

	constructor() {}

	ngOnInit() {
		this.tabList = [
			{
				name: 'link 1',
				link: "/comp1"
			},
			{
				name: 'link 2',
				link: "/comp2"
			},
			{
				name: 'link 3',
				link: "/comp3"
			}
		]		
	}
}

app.component.html:

<h1>Tabs container</h1>
<div>
	<nav>
		<tab *ngFor="let tab of tabList" [name]="tab.name" [link]="tab.link"></tab>
	</nav>    
</div>
<div>
    <router-outlet></router-outlet>
</div>

Each tab is represented by a tab.component.ts:

import { ROUTER_DIRECTIVES, Router } from '@angular/router';
import { Component, OnInit, Input  } from '@angular/core';

@Component({
	selector: 'tab',
	templateUrl: './app/tab/tab.component.html',
  	directives: [ROUTER_DIRECTIVES]
})

export class TabComponent implements OnInit {
	@Input() name: string;
	@Input() link: string;
	@Input() param: string;
	targetArray: Array<any>;

	constructor(private router: Router) {}

	ngOnInit() {
		
	}

	
}

which template is tab.component.html:

<a [routerLink]='link'>{{name}}</a>

Here is the app.routes.ts file:

import { provideRouter, RouterConfig } from '@angular/router';
import { TabComponent } from './tab/tab.component';
import { FirstComponent } from './test/first.component';
import { SecondComponent } from './test/second.component';
import { ThirdComponent } from './test/third.component';

export const routes: RouterConfig = [
  {
    path: '',
    component: TabComponent
  },
  {
    path: 'comp1',
    component: FirstComponent
  },
  {
    path: 'comp2',
    component: SecondComponent
  },
  {
    path: 'comp3',
    component: ThirdComponent
  },
];

export const APP_ROUTER_PROVIDERS = [
  provideRouter(routes)
];

Here is for example the first.component.ts (SecondComponent and ThirdComponent are similar):

import { Component, OnInit } from '@angular/core';

@Component({
	selector: 'first',
	template: `<h1>First</h1>
 			   <button (click)="addTab()">Display child</button>
	           `
})
export class FirstComponent implements OnInit {
	constructor() {}

	ngOnInit() {
		
	}

	addTab(){
	}
}

I would like to put the tab creation logic in the addTab() method to basically add an element to the tabList array in app.component.ts and obtain the desired behavior but I don't know how to transfer data from this component to the app.component.ts.

I also open to any different approach and suggestions.

toskv · Accepted Answer · 2016-07-12 12:14:45Z

1

You can inject the Router into your component and use the config method to configure dynamic links.

router.config([
  { 'path': '/', 'component': IndexComp },
  { 'path': '/user/:id', 'component': UserComp },
]);

The documentation for the Router service can be found here.

answered Jul 12, 2016 at 12:14

toskv

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4 Comments

Platus Over a year ago

Thanks for your answer @toskv, but I'm not sure I understand, do you mean I should replace the tabList array in app.component.ts by the router.config you proposed? I actually want to be able to add a new tab dynamically when a corresponding button/link is clicked in the component currently displayed by the router-outlet and to display a corresponding component in the new tab, in regards of what I've done so fare, I thought I should find a way to add elements to the tabList array from the component displayed in the router-outlet which would add a new tab.

toskv Over a year ago

that's the general ideea. Sadly there doesn't seem to be a way to add a route to the current config, so you have to replace all of them. :(

Platus Over a year ago

Is it possible tha an "outlet"component can communicate with a parent component using a shared service?

toskv Over a year ago

I don't see why not. As long as they share the same service instance.

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