private string DrawAssetPopup <T>(string value, List <T> assets, GUIContent assetLabel) where T : Asset
{
if (assets != null)
{
AssetList assetList = GetAssetList <T>(assets);
int id = -1;
int.TryParse(value, out id);
int index = assetList.GetIndex(id);
int newIndex;
if ((assetLabel == null) || string.IsNullOrEmpty(assetLabel.text))
{
newIndex = EditorGUILayout.Popup(index, assetList.names);
}
else
{
newIndex = EditorGUILayout.Popup(assetLabel, index, assetList.names);
}
return((newIndex != index) ? assetList.GetID(newIndex) : value);
}
else
{
EditorGUILayout.LabelField("(no database)");
return(value);
}
}