protected override void OnGUI_Internal(Rect rect, SerializedProperty property, GUIContent label)
{
// If this is not used on an enum, show an error
if (property.propertyType == SerializedPropertyType.Enum)
{
// By manually creating the control ID, we can keep the ID for the
// label and button the same. This lets them be selected together
// with the keyboard in the inspector, much like a normal popup.
if (idHash == 0)
{
idHash = "SearchableEnumAttributeDrawer".GetHashCode();
}
int id = GUIUtility.GetControlID(idHash, FocusType.Keyboard, rect);
label = EditorGUI.BeginProperty(rect, label, property);
rect = EditorGUI.PrefixLabel(rect, id, label);
GUIContent buttonText =
new GUIContent(property.enumDisplayNames[property.enumValueIndex]);
if (DropdownButton(id, rect, buttonText))
{
Action <int> onSelect = i =>
{
property.enumValueIndex = i;
property.serializedObject.ApplyModifiedProperties();
};
SearchablePopup.Show(rect, property.enumDisplayNames,
property.enumValueIndex, onSelect);
}
}
else
{
string message = $"{nameof(SearchableEnumAttribute)} supports only enum fields";
DrawDefaultPropertyAndHelpBox(rect, property, message, MessageType.Warning);
}
}