Method createOverlay

core/src/components/select/select.tsx:495–521

(ev?: UIEvent)

  }

  private createOverlay(ev?: UIEvent): Promise<OverlaySelect> {
    let selectInterface = this.interface;
    if (selectInterface === 'action-sheet' && this.multiple) {
      printIonWarning(
        `[ion-select] - Interface cannot be "${selectInterface}" with a multi-value select. Using the "alert" interface instead.`
      );
      selectInterface = 'alert';
    }

    if (selectInterface === 'popover' && !ev) {
      printIonWarning(
        `[ion-select] - Interface cannot be a "${selectInterface}" without passing an event. Using the "alert" interface instead.`
      );
      selectInterface = 'alert';
    }

    if (selectInterface === 'action-sheet') {
      return this.openActionSheet();
    }
    if (selectInterface === 'popover') {
      return this.openPopover(ev!);
    }
    if (selectInterface === 'modal') {
      return this.openModal();
    }
    return this.openAlert();
  }

  private updateOverlayOptions(): void {
    const overlay = this.overlay as any;