76 lines
2.5 KiB
C#
76 lines
2.5 KiB
C#
using UnityEngine;
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using UnityEngine.Events;
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using UnityEngine.EventSystems;
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using System;
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using System.Collections;
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using System.Collections.Generic;
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namespace UnityEngine.UI
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{
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public abstract class LoopScrollRect : LoopScrollRectBase
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{
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[HideInInspector]
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[NonSerialized]
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public LoopScrollDataSource dataSource = null;
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protected override void ProvideData(Transform transform, int index)
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{
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dataSource.ProvideData(transform, index);
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}
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protected override RectTransform GetFromTempPool(int itemIdx)
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{
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RectTransform nextItem = null;
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if (deletedItemTypeStart > 0)
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{
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deletedItemTypeStart--;
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nextItem = m_Content.GetChild(0) as RectTransform;
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nextItem.SetSiblingIndex(itemIdx - itemTypeStart + deletedItemTypeStart);
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}
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else if (deletedItemTypeEnd > 0)
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{
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deletedItemTypeEnd--;
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nextItem = m_Content.GetChild(m_Content.childCount - 1) as RectTransform;
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nextItem.SetSiblingIndex(itemIdx - itemTypeStart + deletedItemTypeStart);
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}
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else
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{
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nextItem = prefabSource.GetObject(itemIdx).transform as RectTransform;
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nextItem.transform.SetParent(m_Content, false);
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nextItem.gameObject.SetActive(true);
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}
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ProvideData(nextItem, itemIdx);
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return nextItem;
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}
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protected override void ReturnToTempPool(bool fromStart, int count)
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{
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if (fromStart)
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deletedItemTypeStart += count;
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else
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deletedItemTypeEnd += count;
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}
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protected override void ClearTempPool()
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{
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Debug.Assert(m_Content.childCount >= deletedItemTypeStart + deletedItemTypeEnd);
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if (deletedItemTypeStart > 0)
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{
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for (int i = deletedItemTypeStart - 1; i >= 0; i--)
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{
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prefabSource.ReturnObject(m_Content.GetChild(i));
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}
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deletedItemTypeStart = 0;
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}
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if (deletedItemTypeEnd > 0)
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{
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int t = m_Content.childCount - deletedItemTypeEnd;
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for (int i = m_Content.childCount - 1; i >= t; i--)
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{
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prefabSource.ReturnObject(m_Content.GetChild(i));
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}
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deletedItemTypeEnd = 0;
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}
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}
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}
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} |