69 lines
2.3 KiB
JavaScript
69 lines
2.3 KiB
JavaScript
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import { Subscriber } from '../Subscriber';
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import { Subject } from '../Subject';
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export function windowCount(windowSize, startWindowEvery = 0) {
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return function windowCountOperatorFunction(source) {
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return source.lift(new WindowCountOperator(windowSize, startWindowEvery));
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};
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}
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class WindowCountOperator {
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constructor(windowSize, startWindowEvery) {
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this.windowSize = windowSize;
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this.startWindowEvery = startWindowEvery;
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}
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call(subscriber, source) {
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return source.subscribe(new WindowCountSubscriber(subscriber, this.windowSize, this.startWindowEvery));
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}
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}
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class WindowCountSubscriber extends Subscriber {
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constructor(destination, windowSize, startWindowEvery) {
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super(destination);
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this.destination = destination;
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this.windowSize = windowSize;
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this.startWindowEvery = startWindowEvery;
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this.windows = [new Subject()];
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this.count = 0;
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destination.next(this.windows[0]);
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}
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_next(value) {
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const startWindowEvery = (this.startWindowEvery > 0) ? this.startWindowEvery : this.windowSize;
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const destination = this.destination;
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const windowSize = this.windowSize;
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const windows = this.windows;
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const len = windows.length;
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for (let i = 0; i < len && !this.closed; i++) {
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windows[i].next(value);
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}
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const c = this.count - windowSize + 1;
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if (c >= 0 && c % startWindowEvery === 0 && !this.closed) {
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windows.shift().complete();
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}
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if (++this.count % startWindowEvery === 0 && !this.closed) {
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const window = new Subject();
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windows.push(window);
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destination.next(window);
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}
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}
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_error(err) {
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const windows = this.windows;
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if (windows) {
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while (windows.length > 0 && !this.closed) {
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windows.shift().error(err);
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}
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}
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this.destination.error(err);
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}
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_complete() {
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const windows = this.windows;
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if (windows) {
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while (windows.length > 0 && !this.closed) {
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windows.shift().complete();
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}
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}
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this.destination.complete();
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}
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_unsubscribe() {
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this.count = 0;
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this.windows = null;
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}
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}
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//# sourceMappingURL=windowCount.js.map
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