Clear Selection in Hierarchy via Script

Unity Engine
,
1

If i select 2 or more objects in Hierarchy the script executes each time;
How to execute it just once in case of multiple selection?

public class MyClass : EditorWindow
{
#if (UNITY_EDITOR)
    [MenuItem("GameObject/Make it Cool")]
    static void CreatePrefab()
    { 
        GameObject selected = null;
        selected = Selection.activeGameObject;
    
       if(selected){
        //some cool(not) code here
       }
        
        Selection.activeGameObject = null; //nope
        Selection.objects = null; //also didn't help

        Debug.Log("Executed"); //3 objects selected - 3 "Executed" printed out in Console :-(
    }
#endif
}

So… I must “Clear” the Selection some how… Any help plz?

2

Found out how to handle multiple objects, but I still have multiple execution of the script…

 var selection = Selection.GetTransforms(SelectionMode.TopLevel);
        var selection = Selection.GetTransforms(SelectionMode.TopLevel);

        for (int i=0; i<selection.Length; i++)
        {
            Debug.Log(selection[i].name);
            //do some work with each object here
        }
3

I came up with the solution, it’s fairly simple…and still a little dirty

Just added a check at the top to prevent duplicates to be created in case of multiple selection:

 GameObject selected = Selection.activeGameObject;
        var selection = Selection.GetTransforms(SelectionMode.TopLevel);
        try
        {
            var wasAlreadyCreated = Selection.activeTransform.GetComponent<MyClass>();
            if (wasAlreadyCreated) return;
        }
        catch {}