private AssetReferenceDropdownFolderItem GetParentDropdownItem(AssetReferenceDropdownFolderItem root, string folderPath)
{
if (root.IsRoot && root.Path == folderPath)
{
return(root);
}
if (root.IsRoot == false && root.FolderPath == folderPath)
{
return(root);
}
AssetReferenceDropdownFolderItem parent = root.GetFolder(folderPath) as AssetReferenceDropdownFolderItem;
if (parent != null)
{
return(parent);
}
foreach (AdvancedDropdownItem advancedDropdownItem in root.children)
{
if (advancedDropdownItem is AssetReferenceDropdownFolderItem)
{
parent = GetParentDropdownItem(advancedDropdownItem as AssetReferenceDropdownFolderItem, (advancedDropdownItem as AssetReferenceDropdownFolderItem).Path);
if (parent != null)
{
break;
}
}
}
return(parent);
}
protected override AdvancedDropdownItem BuildRoot()
{
if (_tempGuids == null)
{
_tempGuids = new HashSet <string>();
}
_tempGuids.Clear();
string[] sourceAssetSearchPaths = new[] { "Assets" };
_tempGuids.UnionWith(AssetDatabase.FindAssets($"t:{_assetReferenceDropdownState.AssetType.Name}", sourceAssetSearchPaths));
var root = new AssetReferenceDropdownFolderItem("Assets", "Assets", true);
string[] assetGuids = new List <string>(_tempGuids).ToArray();
for (int i = 0; i < assetGuids.Length; i++)
{
string assetPath = AssetDatabase.GUIDToAssetPath(assetGuids[i]);
var assetItem = new AssetReferenceDropdownAssetItem(assetPath, System.IO.Path.GetFileName(assetPath));
//找到父节点
AssetReferenceDropdownFolderItem parent = GetParentDropdownItem(root, assetItem);
if (parent == null)
{
parent = CreateParentDropdownItem(root, assetItem);
}
parent.AddAsset(assetItem);
assetItem.ParentFolder = parent;
}
return(root);
}
private AssetReferenceDropdownFolderItem CreateParentDropdownItem(AssetReferenceDropdownFolderItem root, AssetReferenceDropdownAssetItem child)
{
string childFolderPath = child.FolderPath;
//获取child的递进式父级文件夹相对路径
string[] childProgressiveAssetFolderPath = PathUtility.GetProgressiveAssetFolderPath(childFolderPath);
AssetReferenceDropdownFolderItem lastParent = root;
for (int i = 0; i < childProgressiveAssetFolderPath.Length; i++)
{
AssetReferenceDropdownFolderItem advancedDropdownItem = GetParentDropdownItem(lastParent, childProgressiveAssetFolderPath[i]);
if (advancedDropdownItem == null)
{
var parent = new AssetReferenceDropdownFolderItem(childProgressiveAssetFolderPath[i], false);
lastParent.AddFolder(parent);
lastParent = parent;
}
else
{
lastParent = advancedDropdownItem;
}
}
return(lastParent);
}
/// <summary>
/// 获取父节点
/// </summary>
/// <param name="root">根结点</param>
/// <param name="child">子节点</param>
/// <returns></returns>
private AssetReferenceDropdownFolderItem GetParentDropdownItem(AssetReferenceDropdownFolderItem root, AssetReferenceDropdownAssetItem child)
{
return(GetParentDropdownItem(root, child.FolderPath));
}
/// <summary>
/// 加子文件夹
/// </summary>
/// <param name="child"></param>
public void AddFolder(AssetReferenceDropdownFolderItem child)
{
_folders.Add(child);
AddChild(child);
}