82 lines
2.1 KiB
Plaintext
82 lines
2.1 KiB
Plaintext
class GroupAnimation {
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constructor(animations) {
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// Bound to accomadate common `return animation.stop` pattern
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this.stop = () => this.runAll("stop");
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this.animations = animations.filter(Boolean);
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}
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get finished() {
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return Promise.all(this.animations.map((animation) => animation.finished));
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}
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/**
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* TODO: Filter out cancelled or stopped animations before returning
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*/
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getAll(propName) {
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return this.animations[0][propName];
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}
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setAll(propName, newValue) {
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for (let i = 0; i < this.animations.length; i++) {
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this.animations[i][propName] = newValue;
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}
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}
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attachTimeline(timeline) {
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const subscriptions = this.animations.map((animation) => animation.attachTimeline(timeline));
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return () => {
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subscriptions.forEach((cancel, i) => {
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cancel && cancel();
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this.animations[i].stop();
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});
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};
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}
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get time() {
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return this.getAll("time");
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}
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set time(time) {
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this.setAll("time", time);
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}
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get speed() {
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return this.getAll("speed");
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}
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set speed(speed) {
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this.setAll("speed", speed);
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}
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get state() {
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return this.getAll("state");
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}
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get startTime() {
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return this.getAll("startTime");
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}
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get duration() {
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return getMax(this.animations, "duration");
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}
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get iterationDuration() {
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return getMax(this.animations, "iterationDuration");
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}
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runAll(methodName) {
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this.animations.forEach((controls) => controls[methodName]());
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}
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play() {
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this.runAll("play");
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}
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pause() {
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this.runAll("pause");
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}
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cancel() {
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this.runAll("cancel");
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}
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complete() {
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this.runAll("complete");
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}
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}
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function getMax(animations, propName) {
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let max = 0;
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for (let i = 0; i < animations.length; i++) {
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const value = animations[i][propName];
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if (value !== null && value > max) {
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max = value;
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}
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}
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return max;
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}
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export { GroupAnimation };
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