using UnityEngine;
using UnityEngine.UIElements;
[RequireComponent(typeof(UIDocument))]
public sealed class ToolkitCounterProbe : MonoBehaviour
{
    private Button incrementButton;
    private Label countLabel;
    private int count;
    private void OnEnable() { Rebind(); }
    [ContextMenu("Rebind Current Document (Play Mode)")]
    public void Rebind()
    {
        Detach();
        if (!Application.isPlaying || !isActiveAndEnabled) return;
        UIDocument document = GetComponent<UIDocument>();
        if (document == null || !document.isActiveAndEnabled)
        { Debug.LogWarning("Enable the assigned UIDocument before rebinding.", this); return; }
        VisualElement root = document.rootVisualElement;
        if (root == null)
        { Debug.LogWarning("UIDocument has no current root; rebind after it is ready.", this); return; }
        incrementButton = root.Q<Button>("increment");
        countLabel = root.Q<Label>("count");
        if (incrementButton == null || countLabel == null)
        { Debug.LogError("UXML needs Button increment and Label count.", this); Detach(); return; }
        incrementButton.clicked += Increment;
        Render();
    }
    private void OnDisable() { Detach(); }
    private void Detach()
    {
        if (incrementButton != null) incrementButton.clicked -= Increment;
        incrementButton = null;
        countLabel = null;
    }
    private void Increment() { count++; Render(); }
    private void Render() { if (countLabel != null) countLabel.text = "Count: " + count; }
}