同步

Packages/dev.yarnspinner.unity/Editor/Editors/LanguagePropertyAttributeEditor.cs

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+/*
+Yarn Spinner is licensed to you under the terms found in the file LICENSE.md.
+*/
+
+using System.Collections.Generic;
+using System.Linq;
+using UnityEditor;
+using UnityEngine;
+using Yarn.Unity.Attributes;
+
+namespace Yarn.Unity.Editor
+{
+
+    [CustomPropertyDrawer(typeof(LanguageAttribute))]
+    public class LanguageAttributeEditor : PropertyDrawer
+    {
+        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+        {
+            using (var scope = new EditorGUI.PropertyScope(position, label, property))
+            {
+                // If this property is not a string, show an error label. (We
+                // can't call EditorGUI.PropertyField, because that would cause
+                // an infinite recursion - Unity would invoke this property
+                // drawer again.)
+                if (property.propertyType != SerializedPropertyType.String)
+                {
+                    EditorGUI.HelpBox(position, $"{property.name} is not a string.", MessageType.Error);
+                    return;
+                }
+
+                // Display this property as a dropdown that lets you select a
+                // language.
+                var allCultures = Cultures.GetCultures().ToList();
+                var indices = Enumerable.Range(0, allCultures.Count());
+
+                var culturesToIndicies = allCultures.Zip(indices, (culture, index) => new { culture, index }).ToDictionary(pair => pair.culture.Name, pair => pair.index);
+
+                var value = property.stringValue;
+
+                int currentCultureIndex;
+
+                if (culturesToIndicies.ContainsKey(value))
+                {
+                    currentCultureIndex = culturesToIndicies[value];
+                }
+                else
+                {
+                    // The property doesn't contain a valid culture name. Show
+                    // an 'empty' value, which will be replaced when the user
+                    // selects a valid value from the dropdown.                
+                    currentCultureIndex = -1;
+                }
+
+                var allCultureDisplayNames = allCultures.Select(c => (c.DisplayName + $":({c.Name})")).Select(n => new GUIContent(n)).ToArray();
+
+                using (var changeCheck = new EditorGUI.ChangeCheckScope())
+                {
+                    var selectedIndex = EditorGUI.Popup(position, label, currentCultureIndex, allCultureDisplayNames);
+                    if (changeCheck.changed)
+                    {
+                        property.stringValue = allCultures[selectedIndex].Name;
+                    }
+                }
+            }
+        }
+    }
+
+}