135 lines
3.8 KiB
C#
135 lines
3.8 KiB
C#
#nullable enable
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using System;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.UIElements;
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namespace UVC.UIToolkit
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{
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/// <summary>
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/// 트리 뷰 컴포넌트.
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/// Unity TreeView를 래핑하여 커스텀 스타일을 적용합니다.
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/// </summary>
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/// <example>
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/// <para><b>C# 코드에서 사용:</b></para>
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/// <code>
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/// // 트리 뷰 생성
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/// var treeView = new UTKTreeView();
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///
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/// // 데이터 구조 설정
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/// var rootItems = new List<TreeViewItemData<string>> {
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/// new TreeViewItemData<string>(0, "루트 1", new List<TreeViewItemData<string>> {
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/// new TreeViewItemData<string>(1, "자식 1-1"),
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/// new TreeViewItemData<string>(2, "자식 1-2")
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/// }),
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/// new TreeViewItemData<string>(3, "루트 2")
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/// };
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/// treeView.SetRootItems(rootItems);
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///
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/// // 아이템 렌더링
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/// treeView.makeItem = () => new Label();
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/// treeView.bindItem = (element, index) => {
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/// var item = treeView.GetItemDataForIndex<string>(index);
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/// (element as Label).text = item;
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/// };
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///
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/// // 선택 이벤트
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/// treeView.OnItemSelected += (index) => Debug.Log($"선택: {index}");
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/// </code>
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/// <para><b>UXML에서 사용:</b></para>
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/// <code>
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/// <ui:UXML xmlns:utk="UVC.UIToolkit">
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/// <utk:UTKTreeView fixed-item-height="24" />
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/// </ui:UXML>
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/// </code>
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/// </example>
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[UxmlElement]
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public partial class UTKTreeView : TreeView, IDisposable
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{
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#region Constants
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private const string USS_PATH = "UIToolkit/List/UTKTreeView";
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#endregion
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#region Fields
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private bool _disposed;
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#endregion
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#region Events
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/// <summary>아이템 선택 이벤트</summary>
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public event Action<int>? OnItemSelected;
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/// <summary>아이템 더블클릭 이벤트</summary>
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public event Action<int>? OnItemDoubleClicked;
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#endregion
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#region Constructor
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public UTKTreeView() : base()
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{
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UTKThemeManager.Instance.ApplyThemeToElement(this);
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var uss = Resources.Load<StyleSheet>(USS_PATH);
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if (uss != null)
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{
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styleSheets.Add(uss);
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}
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SetupStyles();
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SetupEvents();
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SubscribeToThemeChanges();
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}
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#endregion
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#region Setup
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private void SetupStyles()
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{
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AddToClassList("utk-treeview");
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}
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private void SetupEvents()
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{
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selectionChanged += OnSelectionChanged;
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itemsChosen += OnItemsChosen;
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}
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private void SubscribeToThemeChanges()
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{
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UTKThemeManager.Instance.OnThemeChanged += OnThemeChanged;
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RegisterCallback<DetachFromPanelEvent>(_ =>
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{
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UTKThemeManager.Instance.OnThemeChanged -= OnThemeChanged;
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});
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}
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private void OnThemeChanged(UTKTheme theme)
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{
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UTKThemeManager.Instance.ApplyThemeToElement(this);
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}
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#endregion
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#region Event Handlers
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private void OnSelectionChanged(IEnumerable<object> items)
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{
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OnItemSelected?.Invoke(selectedIndex);
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}
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private void OnItemsChosen(IEnumerable<object> items)
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{
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OnItemDoubleClicked?.Invoke(selectedIndex);
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}
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#endregion
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#region IDisposable
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public void Dispose()
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{
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if (_disposed) return;
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_disposed = true;
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selectionChanged -= OnSelectionChanged;
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itemsChosen -= OnItemsChosen;
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UTKThemeManager.Instance.OnThemeChanged -= OnThemeChanged;
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OnItemSelected = null;
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OnItemDoubleClicked = null;
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}
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#endregion
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}
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}
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