/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import {
  animate,
  AnimationTriggerMetadata,
  keyframes,
  state,
  style,
  transition,
  trigger,
} from '@angular/animations';

/**
 * Animations used by MatTooltip.
 * @docs-private
 */
export const matTooltipAnimations: {
  readonly tooltipState: AnimationTriggerMetadata;
} = {
  /** Animation that transitions a tooltip in and out. */
  tooltipState: trigger('state', [
    state('initial, void, hidden', style({opacity: 0, transform: 'scale(0)'})),
    state('visible', style({transform: 'scale(1)'})),
    transition('* => visible', animate('200ms cubic-bezier(0, 0, 0.2, 1)', keyframes([
      style({opacity: 0, transform: 'scale(0)', offset: 0}),
      style({opacity: 0.5, transform: 'scale(0.99)', offset: 0.5}),
      style({opacity: 1, transform: 'scale(1)', offset: 1})
    ]))),
    transition('* => hidden', animate('100ms cubic-bezier(0, 0, 0.2, 1)', style({opacity: 0}))),
  ])
};