Method dismiss

src/material/bottom-sheet/bottom-sheet-ref.ts:104–128

* Dismisses the bottom sheet. * @param result Data to be passed back to the bottom sheet opener.

(result?: R)

   * @param result Data to be passed back to the bottom sheet opener.
   */
  dismiss(result?: R): void {
    if (!this.containerInstance) {
      return;
    }

    // Transition the backdrop in parallel to the bottom sheet.
    this.containerInstance._animationStateChanged
      .pipe(
        filter(event => event.phase === 'start'),
        take(1),
      )
      .subscribe(() => {
        // The logic that disposes of the overlay depends on the exit animation completing, however
        // it isn't guaranteed if the parent view is destroyed while it's running. Add a fallback
        // timeout which will clean everything up if the animation hasn't fired within the specified
        // amount of time plus 100ms. We don't need to run this outside the NgZone, because for the
        // vast majority of cases the timeout will have been cleared before it has fired.
        this._closeFallbackTimeout = setTimeout(() => this._ref.close(this._result), 500);
        this._ref.overlayRef.detachBackdrop();
      });

    this._result = result;
    this.containerInstance.exit();
    this.containerInstance = null!;
  }

  /** Gets an observable that is notified when the bottom sheet is finished closing. */
  afterDismissed(): Observable<R | undefined> {