protected override void DrawLabel(GUIContent label, bool isAppendedToHorizontal, ref bool hasVerticalOutline, IDrawContext context)
{
base.DrawLabel(label, isAppendedToHorizontal, ref hasVerticalOutline, context);
var value = (string)Value ?? string.Empty;
bool hasLineEnds = value.Contains("\n");
bool expanded = _expanded || hasLineEnds;
if (expanded)
{
GUILayout.FlexibleSpace();
context.BeginEnabled(!hasLineEnds);
if (GUILayout.Button("↑", GUILayout.Width(20f)) && !hasLineEnds)
{
_expanded = false;
}
context.EndEnabled();
}
}
