74 lines
2.4 KiB
C#
74 lines
2.4 KiB
C#
/// Credit Ziboo
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/// Sourced from - http://forum.unity3d.com/threads/free-reorderable-list.364600/
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using System.Collections;
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using System.Collections.Generic;
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namespace UnityEngine.UI.Extensions
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{
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[DisallowMultipleComponent]
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public class ReorderableListContent : MonoBehaviour
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{
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private List<Transform> _cachedChildren;
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private List<ReorderableListElement> _cachedListElement;
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private ReorderableListElement _ele;
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private ReorderableList _extList;
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private RectTransform _rect;
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private bool _started = false;
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private void OnEnable()
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{
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if(_rect)StartCoroutine(RefreshChildren());
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}
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public void OnTransformChildrenChanged()
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{
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if(this.isActiveAndEnabled)StartCoroutine(RefreshChildren());
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}
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public void Init(ReorderableList extList)
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{
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if (_started) { StopCoroutine(RefreshChildren()); }
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_extList = extList;
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_rect = GetComponent<RectTransform>();
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_cachedChildren = new List<Transform>();
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_cachedListElement = new List<ReorderableListElement>();
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StartCoroutine(RefreshChildren());
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_started = true;
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}
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private IEnumerator RefreshChildren()
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{
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//Handle new children
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for (int i = 0; i < _rect.childCount; i++)
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{
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if (_cachedChildren.Contains(_rect.GetChild(i)))
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continue;
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//Get or Create ReorderableListElement
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_ele = _rect.GetChild(i).gameObject.GetComponent<ReorderableListElement>() ??
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_rect.GetChild(i).gameObject.AddComponent<ReorderableListElement>();
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_ele.Init(_extList);
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_cachedChildren.Add(_rect.GetChild(i));
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_cachedListElement.Add(_ele);
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}
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//HACK a little hack, if I don't wait one frame I don't have the right deleted children
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yield return 0;
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//Remove deleted child
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for (int i = _cachedChildren.Count - 1; i >= 0; i--)
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{
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if (_cachedChildren[i] == null)
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{
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_cachedChildren.RemoveAt(i);
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_cachedListElement.RemoveAt(i);
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}
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}
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}
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}
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} |