public static FileSelector Show(string directory, List <string> preSelectedFiles, FileSelector.DoneCallback onFinishSelecting)
{
FileSelector fileSelector = EditorWindow.GetWindow(typeof(FileSelector), true, "Please Select Main Assets") as FileSelector;
fileSelector.minSize = new Vector2(400f, 300f);
if (!directory.EndsWith("/"))
{
directory += "/";
}
fileSelector.Init(directory, preSelectedFiles, onFinishSelecting);
fileSelector.Show();
return(fileSelector);
}