/// <summary>
/// Draws popup in the Inspector
/// </summary>
/// <param name="position"></param>
/// <param name="property"></param>
/// <param name="label"></param>
public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{
RequiredInHierarchyAttribute requiredAttr = attribute as RequiredInHierarchyAttribute;
if (!FindRequiredComponent(requiredAttr))
{
position.height = EditorGUIUtility.singleLineHeight * 2.0f;
EditorGUI.HelpBox(position, string.Format("Can not find a {0} component in the scene.", requiredAttr.requiredType.Name), MessageType.Warning);
position.y += EditorGUIUtility.singleLineHeight * 2.0f + 2;
position.height = EditorGUIUtility.singleLineHeight;
}
EditorGUI.PropertyField(position, property, label, true);
}
static Object FindRequiredComponent(RequiredInHierarchyAttribute requiredAttr)
{
return(GameObject.FindObjectOfType(requiredAttr.requiredType));
}
