@angular/animations
Version:
Angular - animations integration with web-animations
94 lines • 12.2 kB
JavaScript
/**
* @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 { scheduleMicroTask } from '../util';
/**
* An empty programmatic controller for reusable animations.
* Used internally when animations are disabled, to avoid
* checking for the null case when an animation player is expected.
*
* @see `animate()`
* @see `AnimationPlayer`
* @see `GroupPlayer`
*
* @publicApi
*/
export class NoopAnimationPlayer {
constructor(duration = 0, delay = 0) {
this._onDoneFns = [];
this._onStartFns = [];
this._onDestroyFns = [];
this._started = false;
this._destroyed = false;
this._finished = false;
this.parentPlayer = null;
this.totalTime = duration + delay;
}
_onFinish() {
if (!this._finished) {
this._finished = true;
this._onDoneFns.forEach(fn => fn());
this._onDoneFns = [];
}
}
onStart(fn) {
this._onStartFns.push(fn);
}
onDone(fn) {
this._onDoneFns.push(fn);
}
onDestroy(fn) {
this._onDestroyFns.push(fn);
}
hasStarted() {
return this._started;
}
init() { }
play() {
if (!this.hasStarted()) {
this._onStart();
this.triggerMicrotask();
}
this._started = true;
}
/** @internal */
triggerMicrotask() {
scheduleMicroTask(() => this._onFinish());
}
_onStart() {
this._onStartFns.forEach(fn => fn());
this._onStartFns = [];
}
pause() { }
restart() { }
finish() {
this._onFinish();
}
destroy() {
if (!this._destroyed) {
this._destroyed = true;
if (!this.hasStarted()) {
this._onStart();
}
this.finish();
this._onDestroyFns.forEach(fn => fn());
this._onDestroyFns = [];
}
}
reset() { }
setPosition(position) { }
getPosition() {
return 0;
}
/** @internal */
triggerCallback(phaseName) {
const methods = phaseName == 'start' ? this._onStartFns : this._onDoneFns;
methods.forEach(fn => fn());
methods.length = 0;
}
}
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The `build()` method\n * returns a factory, whose `create()` method instantiates and initializes this interface.\n *\n * @see `AnimationBuilder`\n * @see `AnimationFactory`\n * @see `animate()`\n *\n * @publicApi\n */\nexport interface AnimationPlayer {\n  /**\n   * Provides a callback to invoke when the animation finishes.\n   * @param fn The callback function.\n   * @see `finish()`\n   */\n  onDone(fn: () => void): void;\n  /**\n   * Provides a callback to invoke when the animation starts.\n   * @param fn The callback function.\n   * @see `run()`\n   */\n  onStart(fn: () => void): void;\n  /**\n   * Provides a callback to invoke after the animation is destroyed.\n   * @param fn The callback function.\n   * @see `destroy()`\n   * @see `beforeDestroy()`\n   */\n  onDestroy(fn: () => void): void;\n  /**\n   * Initializes the animation.\n   */\n  init(): void;\n  /**\n   * Reports whether the animation has started.\n   * @returns True if the animation has started, false otherwise.\n   */\n  hasStarted(): boolean;\n  /**\n   * Runs the animation, invoking the `onStart()` callback.\n   */\n  play(): void;\n  /**\n   * Pauses the animation.\n   */\n  pause(): void;\n  /**\n   * Restarts the paused animation.\n   */\n  restart(): void;\n  /**\n   * Ends the animation, invoking the `onDone()` callback.\n   */\n  finish(): void;\n  /**\n   * Destroys the animation, after invoking the `beforeDestroy()` callback.\n   * Calls the `onDestroy()` callback when destruction is completed.\n   */\n  destroy(): void;\n  /**\n   * Resets the animation to its initial state.\n   */\n  reset(): void;\n  /**\n   * Sets the position of the animation.\n   * @param position A 0-based offset into the duration, in milliseconds.\n   */\n  setPosition(position: any /** TODO #9100 */): void;\n  /**\n   * Reports the current position of the animation.\n   * @returns A 0-based offset into the duration, in milliseconds.\n   */\n  getPosition(): number;\n  /**\n   * The parent of this player, if any.\n   */\n  parentPlayer: AnimationPlayer|null;\n  /**\n   * The total run time of the animation, in milliseconds.\n   */\n  readonly totalTime: number;\n  /**\n   * Provides a callback to invoke before the animation is destroyed.\n   */\n  beforeDestroy?: () => any;\n  /**\n   * @internal\n   * Internal\n   */\n  triggerCallback?: (phaseName: string) => void;\n  /**\n   * @internal\n   * Internal\n   */\n  disabled?: boolean;\n}\n\n/**\n * An empty programmatic controller for reusable animations.\n * Used internally when animations are disabled, to avoid\n * checking for the null case when an animation player is expected.\n *\n * @see `animate()`\n * @see `AnimationPlayer`\n * @see `GroupPlayer`\n *\n * @publicApi\n */\nexport class NoopAnimationPlayer implements AnimationPlayer {\n  private _onDoneFns: Function[] = [];\n  private _onStartFns: Function[] = [];\n  private _onDestroyFns: Function[] = [];\n  private _started = false;\n  private _destroyed = false;\n  private _finished = false;\n  public parentPlayer: AnimationPlayer|null = null;\n  public readonly totalTime: number;\n  constructor(duration: number = 0, delay: number = 0) {\n    this.totalTime = duration + delay;\n  }\n  private _onFinish() {\n    if (!this._finished) {\n      this._finished = true;\n      this._onDoneFns.forEach(fn => fn());\n      this._onDoneFns = [];\n    }\n  }\n  onStart(fn: () => void): void {\n    this._onStartFns.push(fn);\n  }\n  onDone(fn: () => void): void {\n    this._onDoneFns.push(fn);\n  }\n  onDestroy(fn: () => void): void {\n    this._onDestroyFns.push(fn);\n  }\n  hasStarted(): boolean {\n    return this._started;\n  }\n  init(): void {}\n  play(): void {\n    if (!this.hasStarted()) {\n      this._onStart();\n      this.triggerMicrotask();\n    }\n    this._started = true;\n  }\n\n  /** @internal */\n  triggerMicrotask() {\n    scheduleMicroTask(() => this._onFinish());\n  }\n\n  private _onStart() {\n    this._onStartFns.forEach(fn => fn());\n    this._onStartFns = [];\n  }\n\n  pause(): void {}\n  restart(): void {}\n  finish(): void {\n    this._onFinish();\n  }\n  destroy(): void {\n    if (!this._destroyed) {\n      this._destroyed = true;\n      if (!this.hasStarted()) {\n        this._onStart();\n      }\n      this.finish();\n      this._onDestroyFns.forEach(fn => fn());\n      this._onDestroyFns = [];\n    }\n  }\n  reset(): void {}\n  setPosition(position: number): void {}\n  getPosition(): number {\n    return 0;\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"]}