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Wed is a schema-aware editor for XML documents.
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JavaScript
define(function(require,exports,module){
/** PURE_IMPORTS_START _Observable,_scheduler_async,_util_isNumeric,_util_isScheduler PURE_IMPORTS_END */
import { Observable } from '../Observable';
import { async } from '../scheduler/async';
import { isNumeric } from '../util/isNumeric';
import { isScheduler } from '../util/isScheduler';
/**
* Creates an Observable that starts emitting after an `initialDelay` and
* emits ever increasing numbers after each `period` of time thereafter.
*
* <span class="informal">Its like {@link interval}, but you can specify when
* should the emissions start.</span>
*
* <img src="./img/timer.png" width="100%">
*
* `timer` returns an Observable that emits an infinite sequence of ascending
* integers, with a constant interval of time, `period` of your choosing
* between those emissions. The first emission happens after the specified
* `initialDelay`. The initial delay may be a {@link Date}. By default, this
* operator uses the `async` IScheduler to provide a notion of time, but you
* may pass any IScheduler to it. If `period` is not specified, the output
* Observable emits only one value, `0`. Otherwise, it emits an infinite
* sequence.
*
* @example <caption>Emits ascending numbers, one every second (1000ms), starting after 3 seconds</caption>
* var numbers = Rx.Observable.timer(3000, 1000);
* numbers.subscribe(x => console.log(x));
*
* @example <caption>Emits one number after five seconds</caption>
* var numbers = Rx.Observable.timer(5000);
* numbers.subscribe(x => console.log(x));
*
* @see {@link interval}
* @see {@link delay}
*
* @param {number|Date} [dueTime] The initial delay time to wait before
* emitting the first value of `0`.
* @param {number|SchedulerLike} [periodOrScheduler] The period of time between emissions of the
* subsequent numbers.
* @param {SchedulerLike} [scheduler=async] The IScheduler to use for scheduling
* the emission of values, and providing a notion of "time".
* @return {Observable} An Observable that emits a `0` after the
* `initialDelay` and ever increasing numbers after each `period` of time
* thereafter.
* @static true
* @name timer
* @owner Observable
*/
export function timer(dueTime, periodOrScheduler, scheduler) {
if (dueTime === void 0) {
dueTime = 0;
}
var period = -1;
if (isNumeric(periodOrScheduler)) {
period = Number(periodOrScheduler) < 1 && 1 || Number(periodOrScheduler);
}
else if (isScheduler(periodOrScheduler)) {
scheduler = periodOrScheduler;
}
if (!isScheduler(scheduler)) {
scheduler = async;
}
return new Observable(function (subscriber) {
var due = isNumeric(dueTime)
? dueTime
: (+dueTime - scheduler.now());
return scheduler.schedule(dispatch, due, {
index: 0, period: period, subscriber: subscriber
});
});
}
function dispatch(state) {
var index = state.index, period = state.period, subscriber = state.subscriber;
subscriber.next(index);
if (subscriber.closed) {
return;
}
else if (period === -1) {
return subscriber.complete();
}
state.index = index + 1;
this.schedule(state, period);
}
//# sourceMappingURL=timer.js.map
return module.exports;
});