Method ngOnInit

src/material/list/list-option.ts:174–195

()

  private _inputsInitialized = false;

  ngOnInit() {
    const list = this._selectionList;

    if (list._value && list._value.some(value => list.compareWith(this._value, value))) {
      this._setSelected(true);
    }

    const wasSelected = this._selected;

    // List options that are selected at initialization can't be reported properly to the form
    // control. This is because it takes some time until the selection-list knows about all
    // available options. Also it can happen that the ControlValueAccessor has an initial value
    // that should be used instead. Deferring the value change report to the next tick ensures
    // that the form control value is not being overwritten.
    Promise.resolve().then(() => {
      if (this._selected || wasSelected) {
        this.selected = true;
        this._changeDetectorRef.markForCheck();
      }
    });
    this._inputsInitialized = true;
  }

  override ngOnDestroy(): void {
    super.ngOnDestroy();