70 lines
2.3 KiB
C#
70 lines
2.3 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using UnityEngine.UIElements;
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namespace AlicizaX.PackageManager.Editor
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{
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internal class PackageListView : ListView
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{
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public event Action<IEnumerable<RepositoryPackageData>> OnSelectionChangedEvent;
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private void OnSelectionChangedInternal(IEnumerable<object> selectedItems)
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{
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// 转换对象类型为实际数据类型
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var packages = selectedItems.Cast<RepositoryPackageData>();
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OnSelectionChangedEvent?.Invoke(packages);
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// 刷新列表项显示
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RefreshItems();
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}
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public PackageListView()
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{
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style.paddingTop = new Length(2, LengthUnit.Pixel);
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virtualizationMethod = CollectionVirtualizationMethod.FixedHeight;
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fixedItemHeight = 25f;
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horizontalScrollingEnabled = false;
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ScrollView scrollView = this.Q<ScrollView>();
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scrollView.horizontalScrollerVisibility = ScrollerVisibility.Hidden;
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style.flexShrink = 1;
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style.height = Length.Percent(95);
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makeItem = MakeItem;
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bindItem = BindItem;
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selectionChanged += OnSelectionChanged;
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selectionChanged += OnSelectionChangedInternal;
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selectionType = SelectionType.Single;
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}
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private void OnSelectionChanged(IEnumerable<object> selectedItems)
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{
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RefreshItems();
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}
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private VisualElement MakeItem()
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{
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return new PackageInfoListItem();
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}
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private void BindItem(VisualElement item, int index)
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{
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if (!(item is PackageInfoListItem packageItem))
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{
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return;
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}
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RepositoryPackageData packageData = GetVisualStateByIndex(index);
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packageItem.RefreshDataSource(packageData);
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// 绑定数据后更新选中状态
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bool isSelected = selectedIndices.Contains(index);
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packageItem.SetSelected(isSelected);
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}
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private RepositoryPackageData GetVisualStateByIndex(int index)
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{
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return this.itemsSource is List<RepositoryPackageData> itemsSource ? itemsSource.ElementAtOrDefault<RepositoryPackageData>(index) : (RepositoryPackageData)null;
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}
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}
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}
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