@angular/animations
Version:
Angular - animations integration with web-animations
133 lines • 15.9 kB
JavaScript
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"]}