Method _getOverlayWidth

src/material/select/select.ts:1139–1151

Gets how wide the overlay panel should be.

(
    preferredOrigin: ElementRef<ElementRef> | CdkOverlayOrigin | undefined,
  )

  /** Gets how wide the overlay panel should be. */
  private _getOverlayWidth(
    preferredOrigin: ElementRef<ElementRef> | CdkOverlayOrigin | undefined,
  ): string | number {
    if (this.panelWidth === 'auto') {
      const refToMeasure =
        preferredOrigin instanceof CdkOverlayOrigin
          ? preferredOrigin.elementRef
          : preferredOrigin || this._elementRef;
      return refToMeasure.nativeElement.getBoundingClientRect().width;
    }

    return this.panelWidth === null ? '' : this.panelWidth;
  }
  /** Syncs the parent state with the individual options. */
  _syncParentProperties(): void {
    if (this.options) {