@angular/animations
Version:
Angular - animations integration with web-animations
147 lines • 16.2 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
*/
/**
* A programmatic controller for a group of reusable animations.
* Used internally to control animations.
*
* @see {@link AnimationPlayer}
* @see {@link animations/group group}
*
*/
export class AnimationGroupPlayer {
constructor(_players) {
this._onDoneFns = [];
this._onStartFns = [];
this._finished = false;
this._started = false;
this._destroyed = false;
this._onDestroyFns = [];
this.parentPlayer = null;
this.totalTime = 0;
this.players = _players;
let doneCount = 0;
let destroyCount = 0;
let startCount = 0;
const total = this.players.length;
if (total == 0) {
queueMicrotask(() => this._onFinish());
}
else {
this.players.forEach(player => {
player.onDone(() => {
if (++doneCount == total) {
this._onFinish();
}
});
player.onDestroy(() => {
if (++destroyCount == total) {
this._onDestroy();
}
});
player.onStart(() => {
if (++startCount == total) {
this._onStart();
}
});
});
}
this.totalTime = this.players.reduce((time, player) => Math.max(time, player.totalTime), 0);
}
_onFinish() {
if (!this._finished) {
this._finished = true;
this._onDoneFns.forEach(fn => fn());
this._onDoneFns = [];
}
}
init() {
this.players.forEach(player => player.init());
}
onStart(fn) {
this._onStartFns.push(fn);
}
_onStart() {
if (!this.hasStarted()) {
this._started = true;
this._onStartFns.forEach(fn => fn());
this._onStartFns = [];
}
}
onDone(fn) {
this._onDoneFns.push(fn);
}
onDestroy(fn) {
this._onDestroyFns.push(fn);
}
hasStarted() {
return this._started;
}
play() {
if (!this.parentPlayer) {
this.init();
}
this._onStart();
this.players.forEach(player => player.play());
}
pause() {
this.players.forEach(player => player.pause());
}
restart() {
this.players.forEach(player => player.restart());
}
finish() {
this._onFinish();
this.players.forEach(player => player.finish());
}
destroy() {
this._onDestroy();
}
_onDestroy() {
if (!this._destroyed) {
this._destroyed = true;
this._onFinish();
this.players.forEach(player => player.destroy());
this._onDestroyFns.forEach(fn => fn());
this._onDestroyFns = [];
}
}
reset() {
this.players.forEach(player => player.reset());
this._destroyed = false;
this._finished = false;
this._started = false;
}
setPosition(p) {
const timeAtPosition = p * this.totalTime;
this.players.forEach(player => {
const position = player.totalTime ? Math.min(1, timeAtPosition / player.totalTime) : 1;
player.setPosition(position);
});
}
getPosition() {
const longestPlayer = this.players.reduce((longestSoFar, player) => {
const newPlayerIsLongest = longestSoFar === null || player.totalTime > longestSoFar.totalTime;
return newPlayerIsLongest ? player : longestSoFar;
}, null);
return longestPlayer != null ? longestPlayer.getPosition() : 0;
}
beforeDestroy() {
this.players.forEach(player => {
if (player.beforeDestroy) {
player.beforeDestroy();
}
});
}
/** @internal */
triggerCallback(phaseName) {
const methods = phaseName == 'start' ? this._onStartFns : this._onDoneFns;
methods.forEach(fn => fn());
methods.length = 0;
}
}
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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 */\n\nimport {AnimationPlayer} from './animation_player';\n\n/**\n * A programmatic controller for a group of reusable animations.\n * Used internally to control animations.\n *\n * @see {@link AnimationPlayer}\n * @see {@link animations/group group}\n *\n */\nexport class AnimationGroupPlayer implements AnimationPlayer {\n  private _onDoneFns: Function[] = [];\n  private _onStartFns: Function[] = [];\n  private _finished = false;\n  private _started = false;\n  private _destroyed = false;\n  private _onDestroyFns: Function[] = [];\n\n  public parentPlayer: AnimationPlayer|null = null;\n  public totalTime: number = 0;\n  public readonly players: AnimationPlayer[];\n\n  constructor(_players: AnimationPlayer[]) {\n    this.players = _players;\n    let doneCount = 0;\n    let destroyCount = 0;\n    let startCount = 0;\n    const total = this.players.length;\n\n    if (total == 0) {\n      queueMicrotask(() => this._onFinish());\n    } else {\n      this.players.forEach(player => {\n        player.onDone(() => {\n          if (++doneCount == total) {\n            this._onFinish();\n          }\n        });\n        player.onDestroy(() => {\n          if (++destroyCount == total) {\n            this._onDestroy();\n          }\n        });\n        player.onStart(() => {\n          if (++startCount == total) {\n            this._onStart();\n          }\n        });\n      });\n    }\n\n    this.totalTime = this.players.reduce((time, player) => Math.max(time, player.totalTime), 0);\n  }\n\n  private _onFinish() {\n    if (!this._finished) {\n      this._finished = true;\n      this._onDoneFns.forEach(fn => fn());\n      this._onDoneFns = [];\n    }\n  }\n\n  init(): void {\n    this.players.forEach(player => player.init());\n  }\n\n  onStart(fn: () => void): void {\n    this._onStartFns.push(fn);\n  }\n\n  private _onStart() {\n    if (!this.hasStarted()) {\n      this._started = true;\n      this._onStartFns.forEach(fn => fn());\n      this._onStartFns = [];\n    }\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  hasStarted() {\n    return this._started;\n  }\n\n  play() {\n    if (!this.parentPlayer) {\n      this.init();\n    }\n    this._onStart();\n    this.players.forEach(player => player.play());\n  }\n\n  pause(): void {\n    this.players.forEach(player => player.pause());\n  }\n\n  restart(): void {\n    this.players.forEach(player => player.restart());\n  }\n\n  finish(): void {\n    this._onFinish();\n    this.players.forEach(player => player.finish());\n  }\n\n  destroy(): void {\n    this._onDestroy();\n  }\n\n  private _onDestroy() {\n    if (!this._destroyed) {\n      this._destroyed = true;\n      this._onFinish();\n      this.players.forEach(player => player.destroy());\n      this._onDestroyFns.forEach(fn => fn());\n      this._onDestroyFns = [];\n    }\n  }\n\n  reset(): void {\n    this.players.forEach(player => player.reset());\n    this._destroyed = false;\n    this._finished = false;\n    this._started = false;\n  }\n\n  setPosition(p: number): void {\n    const timeAtPosition = p * this.totalTime;\n    this.players.forEach(player => {\n      const position = player.totalTime ? Math.min(1, timeAtPosition / player.totalTime) : 1;\n      player.setPosition(position);\n    });\n  }\n\n  getPosition(): number {\n    const longestPlayer =\n        this.players.reduce((longestSoFar: AnimationPlayer|null, player: AnimationPlayer) => {\n          const newPlayerIsLongest =\n              longestSoFar === null || player.totalTime > longestSoFar.totalTime;\n          return newPlayerIsLongest ? player : longestSoFar;\n        }, null);\n    return longestPlayer != null ? longestPlayer.getPosition() : 0;\n  }\n\n  beforeDestroy(): void {\n    this.players.forEach(player => {\n      if (player.beforeDestroy) {\n        player.beforeDestroy();\n      }\n    });\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"]}