63 lines
1.5 KiB
C#
63 lines
1.5 KiB
C#
using UnityEngine;
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using UnityEngine.EventSystems;
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namespace UIWidgets
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{
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[RequireComponent(typeof(TreeViewComponent))]
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public class TreeViewNodeDropSupport : MonoBehaviour, IDropSupport<TreeNode<TreeViewItem>>, IDropSupport<ListViewIconsItemDescription>
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{
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private TreeViewComponent source;
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public TreeViewComponent Source
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{
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get
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{
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if (source == null)
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{
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source = GetComponent<TreeViewComponent>();
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}
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return source;
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}
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}
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public bool CanReceiveDrop(TreeNode<TreeViewItem> data, PointerEventData eventData)
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{
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return data.CanBeParent(Source.Node);
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}
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public void Drop(TreeNode<TreeViewItem> data, PointerEventData eventData)
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{
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data.Parent = Source.Node;
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}
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public void DropCanceled(TreeNode<TreeViewItem> data, PointerEventData eventData)
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{
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}
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public bool CanReceiveDrop(ListViewIconsItemDescription data, PointerEventData eventData)
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{
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return true;
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}
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public void Drop(ListViewIconsItemDescription data, PointerEventData eventData)
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{
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TreeNode<TreeViewItem> node = Source.Node;
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if (node.Nodes == null)
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{
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node.Nodes = new ObservableList<TreeNode<TreeViewItem>>();
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}
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TreeViewItem treeViewItem = new TreeViewItem(data.Name);
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treeViewItem.LocalizedName = data.LocalizedName;
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treeViewItem.Icon = data.Icon;
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treeViewItem.Value = data.Value;
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TreeViewItem nodeItem = treeViewItem;
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TreeNode<TreeViewItem> item = new TreeNode<TreeViewItem>(nodeItem);
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node.Nodes.Add(item);
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}
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public void DropCanceled(ListViewIconsItemDescription data, PointerEventData eventData)
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{
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}
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}
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}
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