Item purchase dialog for unity

PurchaseDialog.cs

using UnityEngine;
using UnityEngine.UIElements;

[RequireComponent(typeof(UIDocument))]
public class PurchaseDialog : MonoBehaviour
{
    [SerializeField] private UIDocument UIDocument;
    [SerializeField] private string _itemText = "Do you really want to purchase item # for %?";
    [SerializeField] private string _yesButtonName = "YesButton";
    [SerializeField] private string _noButtonName = "NoButton";
    [SerializeField] private string _okButtonName = "OkButton";
    [SerializeField] private string _dialogLabelName = "AskLabel";
    [SerializeField] private string _itemIndicator = "#";
    [SerializeField] private string _costIndicator = "%";
    private Label _dialogLabel;
    private Button _yesButton;
    private Button _noButton;
    private Button _okButton;
    private VisualElement _root;

    public delegate void DialogCallback(bool purchased);
    private DialogCallback _dialogCallback;

    void Awake()
    {
        if(UIDocument != null) { UIDocument = GetComponent<UIDocument>(); }
        _root = UIDocument.rootVisualElement;
        _dialogLabel = _root.Q<Label>(_dialogLabelName);
        _yesButton = _root.Q<Button>(_yesButtonName);
        _noButton = _root.Q<Button>(_noButtonName);
        _okButton = _root.Q<Button>(_okButtonName);
    }

    void Start()
    {
        _okButton.style.display = DisplayStyle.None;
        SetVisible(false);
    }

    private void OnEnable()
    {
        _yesButton.clickable.clicked += () => Purchase(true);
        _noButton.clickable.clicked += () => Purchase(false);
        _okButton.clickable.clicked += () => SetVisible(false);
    }

    private void OnDisable()
    {
        _yesButton.clickable.clicked -= () => Purchase(true);
        _noButton.clickable.clicked -= () => Purchase(false);
        _okButton.clickable.clicked -= () => SetVisible(false);
    }

    private void Purchase(bool accepted)
    {
        if(_dialogCallback != null)
        {
            _dialogCallback(accepted);
        }
        SetVisible(false);
    }

    private void ShowButtons(bool yesButton, bool noButton, bool okButton)
    {
        _yesButton.style.display = (yesButton) ? DisplayStyle.Flex : DisplayStyle.None;
        _noButton.style.display = (noButton) ? DisplayStyle.Flex : DisplayStyle.None;
        _okButton.style.display = (okButton) ? DisplayStyle.Flex : DisplayStyle.None;
    }

    private void SetVisible(bool visible)
    {
        _root.style.display = visible ? DisplayStyle.Flex : DisplayStyle.None;
    }

    public void AskPurchase(DialogCallback _callback, string itemName, decimal itemCost)
    {
        _dialogCallback = _callback;
        _dialogLabel.text = _itemText.Replace(_itemIndicator, itemName)
                                .Replace(_costIndicator, TextExtensions.FormatMoney(itemCost, "R$"));
        ShowButtons(true, true, false);
        SetVisible(true);
    }

    public void ShowInfo(string info)
    {
        _dialogCallback = null;
        _dialogLabel.text = info;
        ShowButtons(false, false, true);
        SetVisible(true);
    }
}

PurchaseDialog.uxml

<ui:UXML xmlns:ui="UnityEngine.UIElements" xmlns:uie="UnityEditor.UIElements" xsi="http://www.w3.org/2001/XMLSchema-instance" engine="UnityEngine.UIElements" editor="UnityEditor.UIElements" noNamespaceSchemaLocation="../../../../../UIElementsSchema/UIElements.xsd" editor-extension-mode="False">
    <ui:VisualElement name="BoxContainer" class="dialog-box">
        <ui:Label tabindex="-1" text="Do you really want to purchase item # for %?" parse-escape-sequences="true" display-tooltip-when-elided="true" name="AskLabel" class="text-white dialog-single-label" />
        <ui:VisualElement name="ButtonsContainer" style="flex-grow: 1; justify-content: space-around; align-self: auto; align-items: center; flex-direction: row;">
            <ui:Button text="No" parse-escape-sequences="true" display-tooltip-when-elided="true" name="NoButton" class="dialog-button UpperMenuOption" />
            <ui:Button text="Yes" parse-escape-sequences="true" display-tooltip-when-elided="true" name="YesButton" class="dialog-button UpperMenuOption" style="display: flex;" />
            <ui:Button text="OK" parse-escape-sequences="true" display-tooltip-when-elided="true" name="OkButton" class="dialog-button UpperMenuOption" style="display: none;" />
        </ui:VisualElement>
    </ui:VisualElement>
</ui:UXML>