Method _setSelectedState

src/material/chips/chip-option.ts:195–209

(isSelected: boolean, isUserInput: boolean, emitEvent: boolean)

  }

  _setSelectedState(isSelected: boolean, isUserInput: boolean, emitEvent: boolean) {
    if (isSelected !== this.selected) {
      this._selected = isSelected;

      if (emitEvent) {
        this.selectionChange.emit({
          source: this,
          isUserInput,
          selected: this.selected,
        });
      }

      this._changeDetectorRef.markForCheck();
    }
  }
}