public override void OnInspectorGUI()
{
base.OnInspectorGUI();
TextHistory history = target as TextHistory;
GUILayout.BeginHorizontal();
sampleText = GUILayout.TextField(sampleText);
if (GUILayout.Button("Push"))
{
if (!string.IsNullOrEmpty(sampleText))
{
history.PushText(sampleText);
}
}
GUILayout.EndHorizontal();
if (GUILayout.Button("Clean"))
{
history.Clear();
}
}