using UnityEngine;
using UnityEditor;

/// <summary>
/// This class contain custom drawer for ReadOnly attribute.
/// </summary>
[CustomPropertyDrawer(typeof(ReadOnlyAttribute))]
public class ReadOnlyDrawer : PropertyDrawer
{
	/// <summary>
	/// Unity method for drawing GUI in Editor
	/// </summary>
	/// <param name="position">Position.</param>
	/// <param name="property">Property.</param>
	/// <param name="label">Label.</param>
	public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
	{
		// Saving previous GUI enabled value
		var previousGUIState = GUI.enabled;

		// Disabling edit for property
		GUI.enabled = false;

		// Drawing Property
		EditorGUI.PropertyField(position, property, label);

		// Setting old GUI enabled value
		GUI.enabled = previousGUIState;
	}
}