FindObjectsInTheSceneHelper.cs

using UnityEngine;
using System.Collections;
using UnityEditor;
using System.Collections.Generic;

public class FindObjectsInTheSceneHelper : EditorWindow
{
    string className = "Rigidbody";

    [MenuItem(MenuItemName.SceneTools + "Find Objects In Current Scene", false, MenuItemSorter.SceneToolsFind)]
    private static void Init()
    {
        FindObjectsInTheSceneHelper window = ScriptableObject.CreateInstance<FindObjectsInTheSceneHelper>();
        window.position = new Rect(Screen.width / 2, Screen.height / 2, 250, 50);
        window.ShowPopup();
    }

    void OnGUI()
    {
        className = EditorGUILayout.TextField("Component:", className);
        GUILayout.BeginHorizontal();
        if (GUILayout.Button("Find"))
        {
            GameObject[] gos = GameObjectUtilsEditor.GetAllObjectsInScene(false);
            List<Object> objectsToSelect = new List<Object>();

            for (int i = 0; i < gos.Length; ++i)
            {
                if (gos[i].GetComponent(className) != null)
                {
                    objectsToSelect.Add(gos[i]);
                }
            }

            Selection.objects = objectsToSelect.ToArray();
            this.Close();
        }
        if (GUILayout.Button("Close"))
        {
            this.Close();
        }
        GUILayout.EndHorizontal();
    }
}