{"version":3,"file":"windowWhen.js","sourceRoot":"","sources":["../../src/operator/windowWhen.ts"],"names":[],"mappings":";AAEA,2BAA0C,yBAAyB,CAAC,CAAA;AAEpE;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GAqCG;AACH,oBAAmD,eAAsC;IACvF,MAAM,CAAC,uBAAW,CAAC,eAAe,CAAC,CAAC,IAAI,CAA8B,CAAC;AACzE,CAAC;AAFe,kBAAU,aAEzB,CAAA","sourcesContent":["\nimport { Observable } from '../Observable';\nimport { windowWhen as higherOrder } from '../operators/windowWhen';\n\n/**\n * Branch out the source Observable values as a nested Observable using a\n * factory function of closing Observables to determine when to start a new\n * window.\n *\n * <span class=\"informal\">It's like {@link bufferWhen}, but emits a nested\n * Observable instead of an array.</span>\n *\n * <img src=\"./img/windowWhen.png\" width=\"100%\">\n *\n * Returns an Observable that emits windows of items it collects from the source\n * Observable. The output Observable emits connected, non-overlapping windows.\n * It emits the current window and opens a new one whenever the Observable\n * produced by the specified `closingSelector` function emits an item. The first\n * window is opened immediately when subscribing to the output Observable.\n *\n * @example <caption>Emit only the first two clicks events in every window of [1-5] random seconds</caption>\n * var clicks = Rx.Observable.fromEvent(document, 'click');\n * var result = clicks\n *   .windowWhen(() => Rx.Observable.interval(1000 + Math.random() * 4000))\n *   .map(win => win.take(2)) // each window has at most 2 emissions\n *   .mergeAll(); // flatten the Observable-of-Observables\n * result.subscribe(x => console.log(x));\n *\n * @see {@link window}\n * @see {@link windowCount}\n * @see {@link windowTime}\n * @see {@link windowToggle}\n * @see {@link bufferWhen}\n *\n * @param {function(): Observable} closingSelector A function that takes no\n * arguments and returns an Observable that signals (on either `next` or\n * `complete`) when to close the previous window and start a new one.\n * @return {Observable<Observable<T>>} An observable of windows, which in turn\n * are Observables.\n * @method windowWhen\n * @owner Observable\n */\nexport function windowWhen<T>(this: Observable<T>, closingSelector: () => Observable<any>): Observable<Observable<T>> {\n  return higherOrder(closingSelector)(this) as Observable<Observable<T>>;\n}\n"]}