FM/Assets/TouchScript/Editor/Layers/StandardLayerEditor.cs

/*
 * @author Valentin Simonov / http://va.lent.in/
 */

using TouchScript.Editor.EditorUI;
using TouchScript.Layers;
using UnityEditor;
using UnityEngine;

namespace TouchScript.Editor.Layers
{
    [CustomEditor(typeof(StandardLayer), true)]
    internal class StandardLayerEditor : UnityEditor.Editor
    {
        public static readonly GUIContent TEXT_ADVANCED_HEADER = new GUIContent("Advanced", "Advanced properties.");
        public static readonly GUIContent TEXT_HIT_HEADER = new GUIContent("Hit test options", "Options which control what types of objects this layer should search under pointers.");

        public static readonly GUIContent TEXT_NAME = new GUIContent("Name", "Layer name.");
        public static readonly GUIContent TEXT_3D_OBJECTS = new GUIContent("Hit 3D Objects", "Layer should raycast 3D objects.");
        public static readonly GUIContent TEXT_2D_OBJECTS = new GUIContent("Hit 2D Objects", "Layer should raycast 2D objects.");
        public static readonly GUIContent TEXT_WORLD_UI = new GUIContent("Hit World UI", "Layer should raycast World Space UI.");
        public static readonly GUIContent TEXT_SS_UI = new GUIContent("Hit Screen Space UI", "Layer should raycast Screen Space UI.");
        public static readonly GUIContent TEXT_LAYER_MASK = new GUIContent("Layer Mask", "Layer mask.");
        public static readonly GUIContent TEXT_HIT_FILTERS = new GUIContent("Use Hit FIlters", "Layer should test for individual HitTest objects.");

        public static readonly GUIContent TEXT_HELP = new GUIContent("This component assigns target GameObjects in the scene for pressed pointers.");

        private SerializedProperty advancedProps, hitProps;
        private SerializedProperty layerName;
        private SerializedProperty basicEditor;
        private SerializedProperty hit3DObjects;
        private SerializedProperty hit2DObjects;
        private SerializedProperty hitWorldSpaceUI;
        private SerializedProperty hitScreenSpaceUI;
        private SerializedProperty layerMask;
        private SerializedProperty useHitFilters;

        protected virtual void OnEnable()
        {
            hideFlags = HideFlags.HideAndDontSave;

            advancedProps = serializedObject.FindProperty("advancedProps");
            hitProps = serializedObject.FindProperty("hitProps");
            layerName = serializedObject.FindProperty("layerName");
            basicEditor = serializedObject.FindProperty("basicEditor");
            hit3DObjects = serializedObject.FindProperty("hit3DObjects");
            hit2DObjects = serializedObject.FindProperty("hit2DObjects");
            hitWorldSpaceUI = serializedObject.FindProperty("hitWorldSpaceUI");
            hitScreenSpaceUI = serializedObject.FindProperty("hitScreenSpaceUI");
            layerMask = serializedObject.FindProperty("layerMask");
            useHitFilters = serializedObject.FindProperty("useHitFilters");
        }

        public override void OnInspectorGUI()
        {
#if UNITY_5_6_OR_NEWER
            serializedObject.UpdateIfRequiredOrScript();
#else
			serializedObject.UpdateIfDirtyOrScript();
#endif

            GUILayout.Space(5);

            if (basicEditor.boolValue)
            {
                drawHit();

                if (GUIElements.BasicHelpBox(TEXT_HELP))
                {
                    basicEditor.boolValue = false;
                    Repaint();
                }
            }
            else
            {
                drawName();
                drawHit();
                drawAdvanced();
            }

            serializedObject.ApplyModifiedProperties();
        }

        private void drawHit()
        {
            var display = GUIElements.Header(TEXT_HIT_HEADER, hitProps);
            if (display)
            {
                EditorGUI.indentLevel++;
                doDrawHit();
                EditorGUI.indentLevel--;
            }
        }

        protected virtual void drawName()
        {
            EditorGUILayout.PropertyField(layerName, TEXT_NAME);
        }

        protected virtual void doDrawHit()
        {
            EditorGUILayout.PropertyField(hitScreenSpaceUI, TEXT_SS_UI);
            EditorGUILayout.PropertyField(hit3DObjects, TEXT_3D_OBJECTS);
            EditorGUILayout.PropertyField(hit2DObjects, TEXT_2D_OBJECTS);
            EditorGUILayout.PropertyField(hitWorldSpaceUI, TEXT_WORLD_UI);
            EditorGUILayout.PropertyField(layerMask, TEXT_LAYER_MASK);
        }

        private void drawAdvanced()
        {
            var display = GUIElements.Header(TEXT_ADVANCED_HEADER, advancedProps);
            if (display)
            {
                EditorGUI.indentLevel++;
                doDrawAdvanced();
                EditorGUI.indentLevel--;
            }
        }

        protected virtual void doDrawAdvanced()
        {
            EditorGUILayout.PropertyField(useHitFilters, TEXT_HIT_FILTERS);
        }
    }
}