Method _selectViaInteraction

src/material/core/option/option.ts:243–249

* `Selects the option while indicating the selection came from the user. Used to * determine if the select's view -> model callback should be invoked.`

()

   * determine if the select's view -> model callback should be invoked.`
   */
  _selectViaInteraction(): void {
    if (!this.disabled) {
      this._selected = this.multiple ? !this._selected : true;
      this._changeDetectorRef.markForCheck();
      this._emitSelectionChangeEvent(true);
    }
  }

  /** Returns the correct tabindex for the option depending on disabled state. */
  // This method is only used by `MatLegacyOption`. Keeping it here to avoid breaking the types.