using UnityEditor;
using UnityEngine;

public class FindComponentUsagesWindow : EditorWindow {
	private MonoScript targetMonoScript;
	private Vector2 scrollPos;

	[MenuItem("UMA/Tools/Find Component Usages")]
	public static void ShowWindow() {
		GetWindow<FindComponentUsagesWindow>(true, "Find Component Usages", true);
	}

	void OnGUI() {
		targetMonoScript = (MonoScript)EditorGUILayout.ObjectField(targetMonoScript, typeof(MonoScript), false);
		if(targetMonoScript != null) {
			scrollPos = EditorGUILayout.BeginScrollView(scrollPos);
			System.Type targetType = targetMonoScript.GetClass();
			if(targetType != null && targetType.IsSubclassOf(typeof(MonoBehaviour))) {
				Object[] allMonoscriptsAsObjects = Resources.FindObjectsOfTypeAll(targetType);
				foreach(Object monoscriptAsObject in allMonoscriptsAsObjects) {
					GameObject prefab = ((MonoBehaviour)monoscriptAsObject).gameObject;
					if(GUILayout.Button(prefab.name)) {
						Selection.activeObject = prefab;
					}
				}
			} else {
				EditorGUILayout.LabelField($"{targetMonoScript.name} is not a subclass of MonoBehavior");
			}
			EditorGUILayout.EndScrollView();
		}
	}
}