fuse-angular/src/app/main/angular-material-elements/angular-material-elements.component.ts

import { Component, OnDestroy, OnInit } from '@angular/core';
import { ActivatedRoute } from '@angular/router';
import { Subject } from 'rxjs';
import { takeUntil } from 'rxjs/operators';

import { COMPONENT_MAP } from 'app/main/angular-material-elements/example-components';

@Component({
    selector   : 'angular-material',
    templateUrl: './angular-material-elements.component.html',
    styleUrls  : ['./angular-material-elements.component.scss']
})
export class AngularMaterialElementsComponent implements OnInit, OnDestroy
{
    id: string;
    title: string;
    examples: any;

    // Private
    private _unsubscribeAll: Subject<any>;

    /**
     * Constructor
     *
     * @param {ActivatedRoute} _activatedRoute
     */
    constructor(
        private _activatedRoute: ActivatedRoute
    )
    {
        // Set the private defaults
        this._unsubscribeAll = new Subject();
    }

    /**
     * On init
     */
    ngOnInit(): void
    {
        this._activatedRoute.params
            .pipe(takeUntil(this._unsubscribeAll))
            .subscribe(params => {
                this.id = params['id'];
                const _title = this.id.replace('-', ' ');
                this.title = _title.charAt(0).toUpperCase() + _title.substring(1);
                this.examples = COMPONENT_MAP[this.id];
            });
    }

    /**
     * On destroy
     */
    ngOnDestroy(): void
    {
        // Unsubscribe from all subscriptions
        this._unsubscribeAll.next();
        this._unsubscribeAll.complete();
    }
}