76 lines
3.0 KiB
C#
76 lines
3.0 KiB
C#
using System.Collections.Generic;
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using UnityEditor;
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using UnityEngine;
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namespace NanoBrain.Unity {
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[CustomPropertyDrawer(typeof(ClusterJson))]
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class ClusterJson_Drawer : PropertyDrawer {
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public override void OnGUI(Rect position, SerializedProperty property, GUIContent label) {
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EditorGUI.BeginProperty(position, label, property);
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ClusterJson clusterJson = property.objectReferenceValue as ClusterJson;
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if (clusterJson == null) {
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clusterJson = ScriptableObject.CreateInstance<ClusterJson>();
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property.objectReferenceValue = clusterJson;
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property.serializedObject.ApplyModifiedProperties();
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EditorUtility.SetDirty(property.serializedObject.targetObject);
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}
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SerializedObject so = new(clusterJson);
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SerializedProperty jsonFileProp = so.FindProperty(nameof(ClusterJson.jsonFile));
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EditorGUI.BeginChangeCheck();
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TextAsset current = jsonFileProp.objectReferenceValue as TextAsset;
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Rect fieldRect = new(position.x, position.y, position.width, EditorGUIUtility.singleLineHeight);
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TextAsset newAsset = (TextAsset)EditorGUI.ObjectField(fieldRect, label, current, typeof(TextAsset), false);
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if (EditorGUI.EndChangeCheck()) {
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jsonFileProp.objectReferenceValue = newAsset;
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so.ApplyModifiedProperties();
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}
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bool showWarning = IsInvalidJson(jsonFileProp);
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if (showWarning) {
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Rect helpRect = new(
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position.x,
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position.y + EditorGUIUtility.singleLineHeight + 2f,
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position.width,
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EditorGUIUtility.singleLineHeight * 2f
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);
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propertyExtraHeight = 2 + 2 * EditorGUIUtility.singleLineHeight;
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EditorGUI.HelpBox(helpRect, "Selected asset is not a .json file.", MessageType.Error);
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}
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else
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propertyExtraHeight = 0;
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EditorGUI.EndProperty();
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}
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private float propertyExtraHeight = 0;
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public override float GetPropertyHeight(SerializedProperty property, GUIContent label) {
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return EditorGUIUtility.singleLineHeight + propertyExtraHeight;
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}
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private readonly Dictionary<EntityId, bool> _invalidCache = new();
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private bool IsInvalidJson(SerializedProperty jsonFileProp) {
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TextAsset jsonFile = jsonFileProp.objectReferenceValue as TextAsset;
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if (jsonFile == null)
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return false;
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EntityId id = jsonFile.GetEntityId();
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if (_invalidCache.TryGetValue(id, out bool invalid))
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return invalid;
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string path = AssetDatabase.GetAssetPath(jsonFile);
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invalid = !path.EndsWith(".json", System.StringComparison.OrdinalIgnoreCase);
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_invalidCache[id] = invalid;
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return invalid;
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}
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}
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} |