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@angular/animations

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Angular - animations integration with web-animations

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import { computeStyle } from '../../util'; import { ElementAnimationStyleHandler } from './element_animation_style_handler'; const DEFAULT_FILL_MODE = 'forwards'; const DEFAULT_EASING = 'linear'; export class CssKeyframesPlayer { constructor(element, keyframes, animationName, _duration, _delay, easing, _finalStyles, _specialStyles) { this.element = element; this.keyframes = keyframes; this.animationName = animationName; this._duration = _duration; this._delay = _delay; this._finalStyles = _finalStyles; this._specialStyles = _specialStyles; this._onDoneFns = []; this._onStartFns = []; this._onDestroyFns = []; this._started = false; this.currentSnapshot = {}; this._state = 0; this.easing = easing || DEFAULT_EASING; this.totalTime = _duration + _delay; this._buildStyler(); } onStart(fn) { this._onStartFns.push(fn); } onDone(fn) { this._onDoneFns.push(fn); } onDestroy(fn) { this._onDestroyFns.push(fn); } destroy() { this.init(); if (this._state >= 4 /* DESTROYED */) return; this._state = 4 /* DESTROYED */; this._styler.destroy(); this._flushStartFns(); this._flushDoneFns(); if (this._specialStyles) { this._specialStyles.destroy(); } this._onDestroyFns.forEach(fn => fn()); this._onDestroyFns = []; } _flushDoneFns() { this._onDoneFns.forEach(fn => fn()); this._onDoneFns = []; } _flushStartFns() { this._onStartFns.forEach(fn => fn()); this._onStartFns = []; } finish() { this.init(); if (this._state >= 3 /* FINISHED */) return; this._state = 3 /* FINISHED */; this._styler.finish(); this._flushStartFns(); if (this._specialStyles) { this._specialStyles.finish(); } this._flushDoneFns(); } setPosition(value) { this._styler.setPosition(value); } getPosition() { return this._styler.getPosition(); } hasStarted() { return this._state >= 2 /* STARTED */; } init() { if (this._state >= 1 /* INITIALIZED */) return; this._state = 1 /* INITIALIZED */; const elm = this.element; this._styler.apply(); if (this._delay) { this._styler.pause(); } } play() { this.init(); if (!this.hasStarted()) { this._flushStartFns(); this._state = 2 /* STARTED */; if (this._specialStyles) { this._specialStyles.start(); } } this._styler.resume(); } pause() { this.init(); this._styler.pause(); } restart() { this.reset(); this.play(); } reset() { this._styler.destroy(); this._buildStyler(); this._styler.apply(); } _buildStyler() { this._styler = new ElementAnimationStyleHandler(this.element, this.animationName, this._duration, this._delay, this.easing, DEFAULT_FILL_MODE, () => this.finish()); } /** @internal */ triggerCallback(phaseName) { const methods = phaseName == 'start' ? this._onStartFns : this._onDoneFns; methods.forEach(fn => fn()); methods.length = 0; } beforeDestroy() { this.init(); const styles = {}; if (this.hasStarted()) { const finished = this._state >= 3 /* FINISHED */; Object.keys(this._finalStyles).forEach(prop => { if (prop != 'offset') { styles[prop] = finished ? this._finalStyles[prop] : computeStyle(this.element, prop); } }); } this.currentSnapshot = styles; } } //# 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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nimport {AnimationPlayer} from '@angular/animations';\n\nimport {computeStyle} from '../../util';\nimport {SpecialCasedStyles} from '../special_cased_styles';\nimport {ElementAnimationStyleHandler} from './element_animation_style_handler';\n\nconst DEFAULT_FILL_MODE = 'forwards';\nconst DEFAULT_EASING = 'linear';\n\nexport const enum AnimatorControlState {\n  INITIALIZED = 1,\n  STARTED = 2,\n  FINISHED = 3,\n  DESTROYED = 4\n}\n\nexport class CssKeyframesPlayer implements AnimationPlayer {\n  private _onDoneFns: Function[] = [];\n  private _onStartFns: Function[] = [];\n  private _onDestroyFns: Function[] = [];\n\n  private _started = false;\n  // TODO(issue/24571): remove '!'.\n  private _styler!: ElementAnimationStyleHandler;\n\n  // TODO(issue/24571): remove '!'.\n  public parentPlayer!: AnimationPlayer;\n  public readonly totalTime: number;\n  public readonly easing: string;\n  public currentSnapshot: {[key: string]: string} = {};\n\n  private _state: AnimatorControlState = 0;\n\n  constructor(\n      public readonly element: any, public readonly keyframes: {[key: string]: string|number}[],\n      public readonly animationName: string, private readonly _duration: number,\n      private readonly _delay: number, easing: string,\n      private readonly _finalStyles: {[key: string]: any},\n      private readonly _specialStyles?: SpecialCasedStyles|null) {\n    this.easing = easing || DEFAULT_EASING;\n    this.totalTime = _duration + _delay;\n    this._buildStyler();\n  }\n\n  onStart(fn: () => void): void {\n    this._onStartFns.push(fn);\n  }\n\n  onDone(fn: () => void): void {\n    this._onDoneFns.push(fn);\n  }\n\n  onDestroy(fn: () => void): void {\n    this._onDestroyFns.push(fn);\n  }\n\n  destroy() {\n    this.init();\n    if (this._state >= AnimatorControlState.DESTROYED) return;\n    this._state = AnimatorControlState.DESTROYED;\n    this._styler.destroy();\n    this._flushStartFns();\n    this._flushDoneFns();\n    if (this._specialStyles) {\n      this._specialStyles.destroy();\n    }\n    this._onDestroyFns.forEach(fn => fn());\n    this._onDestroyFns = [];\n  }\n\n  private _flushDoneFns() {\n    this._onDoneFns.forEach(fn => fn());\n    this._onDoneFns = [];\n  }\n\n  private _flushStartFns() {\n    this._onStartFns.forEach(fn => fn());\n    this._onStartFns = [];\n  }\n\n  finish() {\n    this.init();\n    if (this._state >= AnimatorControlState.FINISHED) return;\n    this._state = AnimatorControlState.FINISHED;\n    this._styler.finish();\n    this._flushStartFns();\n    if (this._specialStyles) {\n      this._specialStyles.finish();\n    }\n    this._flushDoneFns();\n  }\n\n  setPosition(value: number) {\n    this._styler.setPosition(value);\n  }\n\n  getPosition(): number {\n    return this._styler.getPosition();\n  }\n\n  hasStarted(): boolean {\n    return this._state >= AnimatorControlState.STARTED;\n  }\n  init(): void {\n    if (this._state >= AnimatorControlState.INITIALIZED) return;\n    this._state = AnimatorControlState.INITIALIZED;\n    const elm = this.element;\n    this._styler.apply();\n    if (this._delay) {\n      this._styler.pause();\n    }\n  }\n\n  play(): void {\n    this.init();\n    if (!this.hasStarted()) {\n      this._flushStartFns();\n      this._state = AnimatorControlState.STARTED;\n      if (this._specialStyles) {\n        this._specialStyles.start();\n      }\n    }\n    this._styler.resume();\n  }\n\n  pause(): void {\n    this.init();\n    this._styler.pause();\n  }\n  restart(): void {\n    this.reset();\n    this.play();\n  }\n  reset(): void {\n    this._styler.destroy();\n    this._buildStyler();\n    this._styler.apply();\n  }\n\n  private _buildStyler() {\n    this._styler = new ElementAnimationStyleHandler(\n        this.element, this.animationName, this._duration, this._delay, this.easing,\n        DEFAULT_FILL_MODE, () => this.finish());\n  }\n\n  /** @internal */\n  triggerCallback(phaseName: string): void {\n    const methods = phaseName == 'start' ? this._onStartFns : this._onDoneFns;\n    methods.forEach(fn => fn());\n    methods.length = 0;\n  }\n\n  beforeDestroy() {\n    this.init();\n    const styles: {[key: string]: string} = {};\n    if (this.hasStarted()) {\n      const finished = this._state >= AnimatorControlState.FINISHED;\n      Object.keys(this._finalStyles).forEach(prop => {\n        if (prop != 'offset') {\n          styles[prop] = finished ? this._finalStyles[prop] : computeStyle(this.element, prop);\n        }\n      });\n    }\n    this.currentSnapshot = styles;\n  }\n}\n"]}