static bool AnyTargetMaterialHasChildren(string[] targetPaths)
{
GUID[] guids = targetPaths.Select(path => AssetDatabase.GUIDFromAssetPath(path)).ToArray();
Func <string, bool> HasChildrenInPath = (string rootPath) => {
var property = new HierarchyProperty(rootPath, false);
property.SetSearchFilter(new SearchFilter {
classNames = new string[] { "Material" }, searchArea = SearchFilter.SearchArea.AllAssets
});
while (property.Next(null))
{
GUID parent;
var child = InternalEditorUtility.GetLoadedObjectFromInstanceID(property.GetInstanceIDIfImported()) as Material;
if (child)
{
if (AssetDatabase.IsForeignAsset(child))
{
continue;
}
parent = AssetDatabase.GUIDFromAssetPath(AssetDatabase.GetAssetPath(child.parent));
}
else
{
var path = AssetDatabase.GUIDToAssetPath(property.guid);
if (!path.EndsWith(".mat", StringComparison.OrdinalIgnoreCase))
{
continue;
}
parent = EditorMaterialUtility.GetMaterialParentFromFile(path);
}
for (int i = 0; i < guids.Length; i++)
{
if (guids[i] == parent)
{
return(true);
}
}
}
return(false);
};
if (HasChildrenInPath("Assets"))
{
return(true);
}
foreach (var package in PackageManagerUtilityInternal.GetAllVisiblePackages(false))
{
if (package.source == PackageManager.PackageSource.Local && HasChildrenInPath(package.assetPath))
{
return(true);
}
}
return(false);
}
void Search()
{
var newResults = new List <int>();
var maxAddCount = k_MaxSearchIterationPerFrame;
while (--maxAddCount >= 0)
{
if (!enumerator.MoveNext())
{
enumerator = null;
break;
}
var child = InternalEditorUtility.GetLoadedObjectFromInstanceID(enumerator.Current.GetInstanceIDIfImported()) as Material;
if (!child)
{
// First check guid from file to avoid loading material in memory
string path = AssetDatabase.GUIDToAssetPath(enumerator.Current.guid);
if (EditorMaterialUtility.GetMaterialParentFromFile(path) != targetGUID)
{
continue;
}
child = AssetDatabase.LoadAssetAtPath <Material>(path);
}
if (child != null && child.parent == target)
{
newResults.Add(child.GetInstanceID());
}
}
int newElements = newResults.Count;
int i = results.Length;
System.Array.Resize(ref results, results.Length + newElements);
for (var j = 0; j < newElements && i < results.Length; ++j, ++i)
{
results[i] = newResults[j];
}
listArea.ShowObjectsInList(results);
}
static void ReparentMaterialChildren(string assetPath)
{
var toDelete = AssetDatabase.LoadAssetAtPath <Material>(assetPath);
var toDeleteGUID = AssetDatabase.GUIDFromAssetPath(assetPath);
var newParent = toDelete.parent;
Action <string> ReparentInPath = (string rootPath) => {
var property = new HierarchyProperty(rootPath, false);
property.SetSearchFilter(new SearchFilter {
classNames = new string[] { "Material" }, searchArea = SearchFilter.SearchArea.AllAssets
});
while (property.Next(null))
{
var child = InternalEditorUtility.GetLoadedObjectFromInstanceID(property.GetInstanceIDIfImported()) as Material;
if (!child)
{
// First check guid from file to avoid loading all materials in memory
string path = AssetDatabase.GUIDToAssetPath(property.guid);
if (EditorMaterialUtility.GetMaterialParentFromFile(path) != toDeleteGUID)
{
continue;
}
child = AssetDatabase.LoadAssetAtPath <Material>(path);
}
if (child != null && child.parent == toDelete && !AssetDatabase.IsForeignAsset(child))
{
child.parent = newParent;
}
}
};
ReparentInPath("Assets");
foreach (var package in PackageManagerUtilityInternal.GetAllVisiblePackages(false))
{
if (package.source == PackageManager.PackageSource.Local)
{
ReparentInPath(package.assetPath);
}
}
}