43 lines
1.3 KiB
JavaScript
43 lines
1.3 KiB
JavaScript
|
import { ReplaySubject } from '../ReplaySubject';
|
||
|
|
/**
|
||
|
|
* @method shareReplay
|
||
|
|
* @owner Observable
|
||
|
|
*/
|
||
|
|
export function shareReplay(bufferSize, windowTime, scheduler) {
|
||
|
|
return (source) => source.lift(shareReplayOperator(bufferSize, windowTime, scheduler));
|
||
|
|
}
|
||
|
|
function shareReplayOperator(bufferSize, windowTime, scheduler) {
|
||
|
|
let subject;
|
||
|
|
let refCount = 0;
|
||
|
|
let subscription;
|
||
|
|
let hasError = false;
|
||
|
|
let isComplete = false;
|
||
|
|
return function shareReplayOperation(source) {
|
||
|
|
refCount++;
|
||
|
|
if (!subject || hasError) {
|
||
|
|
hasError = false;
|
||
|
|
subject = new ReplaySubject(bufferSize, windowTime, scheduler);
|
||
|
|
subscription = source.subscribe({
|
||
|
|
next(value) { subject.next(value); },
|
||
|
|
error(err) {
|
||
|
|
hasError = true;
|
||
|
|
subject.error(err);
|
||
|
|
},
|
||
|
|
complete() {
|
||
|
|
isComplete = true;
|
||
|
|
subject.complete();
|
||
|
|
},
|
||
|
|
});
|
||
|
|
}
|
||
|
|
const innerSub = subject.subscribe(this);
|
||
|
|
return () => {
|
||
|
|
refCount--;
|
||
|
|
innerSub.unsubscribe();
|
||
|
|
if (subscription && refCount === 0 && isComplete) {
|
||
|
|
subscription.unsubscribe();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
};
|
||
|
|
}
|
||
|
|
;
|
||
|
|
//# sourceMappingURL=shareReplay.js.map
|