Create SelectAssetsByType.cs

Author: unitycoder

Assets/Scripts/Editor/Tools/SelectAssetsByType.cs

@@ -0,0 +1,122 @@
+// select multiple files or folders from Project window, then can filter by type and select all objects of that type
+
+using UnityEditor;
+using UnityEngine;
+using System.Collections.Generic;
+
+namespace UnityLibrary
+{
+    public class SelectAssetsByType : EditorWindow
+    {
+        private Dictionary<System.Type, List<Object>> groupedObjects;
+        private List<Object> allObjects;
+
+        [MenuItem("Tools/UnityLibrary/Select Assets By Type")]
+        public static void ShowWindow()
+        {
+            GetWindow<SelectAssetsByType>("Select Assets By Type");
+        }
+
+        private void OnEnable()
+        {
+            // Automatically refresh whenever selection changes
+            Selection.selectionChanged += RefreshSelection;
+            RefreshSelection();
+        }
+
+        private void OnDisable()
+        {
+            // Unsubscribe from selection change event
+            Selection.selectionChanged -= RefreshSelection;
+        }
+
+        private void OnGUI()
+        {
+            if (groupedObjects != null)
+            {
+                foreach (var group in groupedObjects)
+                {
+                    if (group.Value.Count > 0)
+                    {
+                        // Show type and number of objects
+                        if (GUILayout.Button($"{group.Value.Count} {group.Key.Name}(s)"))
+                        {
+                            // Select objects of this type in the editor
+                            SelectObjects(group.Value);
+                        }
+                    }
+                }
+            }
+        }
+
+        private void RefreshSelection()
+        {
+            groupedObjects = new Dictionary<System.Type, List<Object>>();
+            allObjects = new List<Object>();
+
+            // Get selected objects and their children
+            var selectedObjects = Selection.objects;
+            foreach (var obj in selectedObjects)
+            {
+                allObjects.Add(obj);
+
+                // If the object is a folder, include assets inside the folder recursively
+                if (AssetDatabase.IsValidFolder(AssetDatabase.GetAssetPath(obj)))
+                {
+                    AddFolderContents(AssetDatabase.GetAssetPath(obj));
+                }
+                else
+                {
+                    // Add children if it's a GameObject
+                    if (obj is GameObject gameObject)
+                    {
+                        AddChildren(gameObject);
+                    }
+                }
+            }
+
+            // Group by type
+            foreach (var obj in allObjects)
+            {
+                var type = obj.GetType();
+                if (!groupedObjects.ContainsKey(type))
+                {
+                    groupedObjects[type] = new List<Object>();
+                }
+                groupedObjects[type].Add(obj);
+            }
+
+            // Refresh the window UI
+            Repaint();
+        }
+
+        private void AddChildren(GameObject obj)
+        {
+            foreach (Transform child in obj.transform)
+            {
+                allObjects.Add(child.gameObject);
+                AddChildren(child.gameObject);
+            }
+        }
+
+        private void AddFolderContents(string folderPath)
+        {
+            // Get all assets in the folder and subfolders
+            string[] guids = AssetDatabase.FindAssets("", new[] { folderPath });
+            foreach (string guid in guids)
+            {
+                string path = AssetDatabase.GUIDToAssetPath(guid);
+                Object asset = AssetDatabase.LoadAssetAtPath<Object>(path);
+                if (asset != null)
+                {
+                    allObjects.Add(asset);
+                }
+            }
+        }
+
+        private void SelectObjects(List<Object> objects)
+        {
+            Selection.objects = objects.ToArray();
+        }
+    }
+}