Class BodyDOMSource

dom/src/BodyDOMSource.ts:7–34

import {fromEvent} from './fromEvent';

export class BodyDOMSource implements DOMSource {
  constructor(private _name: string) {
  }

  public select(selector: string): DOMSource {
    // This functionality is still undefined/undecided.
    return this;
  }

  public elements(): MemoryStream<HTMLBodyElement> {
    const out: DevToolEnabledSource & MemoryStream<HTMLBodyElement> =
      adapt(xs.of(document.body));
    out._isCycleSource = this._name;
    return out;
  }

  public events(eventType: string, options: EventsFnOptions = {}): Stream<Event> {
    let stream: Stream<Event>;
    if (options && typeof options.useCapture === 'boolean') {
      stream = fromEvent(document.body, eventType, options.useCapture);
    } else {
      stream = fromEvent(document.body, eventType);
    }
    const out: DevToolEnabledSource & Stream<Event> = adapt(stream);
    out._isCycleSource = this._name;
    return out;
  }
}