What is the proper way to assign a class name to an animation state in Angular 2/4?

I am currently working with Angular Animations using version 4.1.3

Check out the code snippet below:

@Component({
  selector : 'my-fader',
  animations: [
    trigger('visibilityChanged', [
      state('true' , style({ opacity: 1, transform: 'scale(1.0)' })),
      state('false', style({ opacity: 0, transform: 'scale(0.0)'  })),
      transition('1 => 0', animate('300ms')),
      transition('0 => 1', animate('900ms'))
    ])
  ]
...

Instead of using inline styles in the state definition, I'm interested in applying an existing class name from my stylesheets. Is this possible? If so, any guidance on how to achieve this would be appreciated.

Answer №1

Unfortunately, finding a solution to this issue has proven quite challenging for me as well.

It's worth noting that Angular Animations utilize the Web Animations API rather than CSS animations.

To delve deeper into this topic, I recommend visiting https://css-tricks.com/css-animations-vs-web-animations-api/.

Answer №2

:host[style*='opacity: 0'] {
  visibility: hidden;
}

This snippet targets the element within your class that has an opacity style set to 0 and applies styles accordingly using this specific selector.

Referencing the source of this solution from Stack Overflow.

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