nowzoo-angular-bootstrap-lite (nzb)

This library is an Angular 4+ wrapper for Bootstrap 4 Beta.

Important: depends on Bootstrap, Tether and slim jQuery. Rather than recreating Bootstrap components from scratch in native Angular, we use Bootstrap javascript and its dependencies. This is a fundamentally different approach from other Angular/Bootstrap libraries. Namely, it's not "pure" Angular. We've went for a bit of impurity for the sake of a smaller codebase and consistency with Bootstrap.

(Want Angular purity? Look here https://github.com/valor-software/ngx-bootstrap or here https://github.com/ng-bootstrap/ng-bootstrap.)

Design Goal

Bootstrap works. Angular works. This library attempts to wrap the Bootstrap API as simply and as consistently as possible.

What's included

• Alerts
• Modals
• Popovers
• Tooltips
• Tabs (tabs, pills, list groups)
• Collapse
• Carousels
• Dropdowns

Installation

Install the library.

npm i --save nowzoo-angular-bootstrap-lite

Add the jQuery, Popper and Bootstrap scripts and the Bootstrap css to your build. For an Angular CLI project, add them in angular-cli.json...

{
  "apps": [
    {
      "scripts": [
        "../node_modules/jquery/dist/jquery.slim.min.js",
        "../node_modules/popper.js/dist/umd/popper.min.js",
        "../node_modules/bootstrap/dist/js/bootstrap.min.js"
      ],
      "styles": [
        "../node_modules/bootstrap/dist/css/bootstrap.min.css"
      ]
    }
  ]
}

Import the library.

// other imports...
import { NzbModule } from 'nowzoo-angular-bootstrap-lite';
@NgModule({
  imports: [
    // other modules...
    NzbModule
  ],
  // etc..
})
export class AppModule { }

Alerts

• NzbAlertDirective code
• selector: '[nzbAlert]'
• exportAs: 'nzbAlert'
• Examples

Use the nzbAlert selector with native Bootstrap alert markup. This creates an instance of NzbAlertDirective, with an API that closely follows the native Bootstrap implementation. Notes:

• Bootstrap removes the alert markup when the modal is closed. The library does not change this behavior, but it does provide an open method that reinserts the original markup into the DOM — showing the alert again.
• Relatedly, you can hide the alert when it is instantiated using the initiallyOpen input.

Alerts Usage

<div nzbAlert #alert1="nzbAlert" class="alert alert-warning alert-dismissible fade" role="alert">
  <button type="button" class="close" data-dismiss="alert" aria-label="Close">
    <span aria-hidden="true">&times;</span>
  </button>
  <strong>Holy guacamole!</strong> You should check in on some of those fields below.
</div>
<p>Alert 1 Status: {{ alert1.status | async }}</p>

Use ViewChild to grab the instance in your component:

export class SomeComponent implements AfterViewInit {
  @ViewChild('alert1') alert1: NzbAlertDirective;
  ngAfterViewInit() {
    console.log(this.alert1);
  }
}

NzbAlertDirective Options

• initiallyOpen: boolean = true Whether to show the alert initially. Use [initiallyOpen]="false" to hide the alert.
• Use the contextual classes (e.g. alert-warning) as you would normally.
• Add the fade class to enable animation.
• Add the alert-dismissable class if you include a close button.

NzbAlertDirective Methods

• close(): void A wrapper around the native method. Within the modal, you can use data-dismiss="alert" as well. Note that Bootstrap removes the markup from the DOM when the alert is closed; we do not change this behavior.
• open(): void Reinserts the alert markup (if necessary) and shows the alert.

NzbAlertDirective Properties

• status: Observable<string> One of:
  • 'uninitialized'
  • 'opening'
  • 'opened'
  • 'closing'
  • 'closed'
• events: Observable<Event> Provides the native bootstrap alert events (close.bs.alert and closed.bs.alert) as an observable. Note that there are no analogous open and opened events, since such events do not exist natively.

Carousels

Use the nzbCarousel directive in native Bootstrap carousel markup. This creates an instance of NzbCarouselDirective, with an API that closely follows the native API, with the addition of some useful additions. Notes:

• Native carousel events are available as an observable: carouselInstance.events.
• The current slide index is

Options

The Angular directive itself does not have options. Use the native data- attributes to set options, such as interval. Use the .active class to set which .carousel-item is initially shown.

Methods

• cycle(): void A wrapper around the native method. Starts the cycling of slides.
• pause(): void A wrapper around the native method. Stops the cycling of slides.
• slideTo(index: number): void A wrapper around the native $el.carousel(index) method. Shows the item at index.
• prev(): void A wrapper around the native method. Goes to the previous slide.
• next(): void A wrapper around the native method. Goes to the next slide.

Properties

• events: Observable<Event> Provides the native Bootstrap carousel events (slide.bs.carousel, slid.bs.carousel) as an observable.
• index: Observable<number> The index of the currently shown slide.
• paused: Observable<boolean> Whether or not the carousel has been paused.
• animating: Observable<boolean> Whether or not the carousel is transitioning from one slide to another.
• data: Observable<any> The underlying Bootstrap data (i.e., $el.data('bs.carousel')).