public static void Flags(Rect position, FlagsOption[] options, Action <FlagsOption, SerializedProperty> onSelected, GUIContent label = null, SerializedProperty property = null)
{
label = label ?? property.ToGUIContent();
int selectedCount = options.Count(option => option.IsSelected);
bool nothing = selectedCount == 0;
bool everything = selectedCount == options.Length;
GUIContent popupName;
position = EditorGUI.PrefixLabel(position, label);
if (nothing)
{
popupName = "Nothing".ToGUIContent();
}
else if (everything)
{
popupName = "Everything".ToGUIContent();
}
else
{
var name = "";
foreach (var option in options)
{
if (option.IsSelected)
{
if (string.IsNullOrEmpty(name))
{
name = option.Label.text;
}
else
{
name += " | " + option.Label.text;
}
}
}
if (selectedCount > 1 && name.GetWidth(EditorStyles.miniFont) > position.width)
{
popupName = string.Format("Mixed ({0}) ...", selectedCount).ToGUIContent();
}
else
{
popupName = name.ToGUIContent();
}
}
int indent = EditorGUI.indentLevel;
EditorGUI.indentLevel = 0;
GenericMenu.MenuFunction2 callback = data => onSelected((FlagsOption)data, property);
if (GUI.Button(position, GUIContent.none, new GUIStyle()))
{
var menu = new GenericMenu();
menu.AddItem(FlagsOption.GetNothing(nothing), callback);
menu.AddItem(FlagsOption.GetEverything(everything), callback);
for (int i = 0; i < options.Length; i++)
{
var option = options[i];
menu.AddItem(option.Label, option.IsSelected, callback, option);
}
menu.DropDown(position);
}
EditorGUI.LabelField(position, popupName, EditorStyles.popup);
EditorGUI.indentLevel = indent;
}
