TextLocalizationEditor.cs

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using UnityEngine;
using UnityEditor;

namespace HKI.Core.Loc.Editor
{
    [CustomEditor(typeof(TextLocalization))]
    public class TextLocalizationEditor : UnityEditor.Editor
    {
        // Private variables
        const string textLocalizationElementsSPName = "TextLocalizationElements";

        SerializedProperty textLocalizationElementsSP = null;
        
        // On Enable function
        void OnEnable()
        {
            textLocalizationElementsSP = serializedObject.FindProperty(textLocalizationElementsSPName);
        }

        // OnInspectorGUI function
        public override void OnInspectorGUI()
        {
            Draw(serializedObject, textLocalizationElementsSP);
        }

        // Interface function
        public static void Draw(SerializedObject serializedObject, SerializedProperty property)
        {
            serializedObject.Update();

            EditorGUILayout.BeginHorizontal(EditorStyles.toolbar);

            if (GUILayout.Button("Add", EditorStyles.toolbarButton, GUILayout.Width(40.0f)))
            {
                property.InsertArrayElementAtIndex(property.arraySize);

                serializedObject.ApplyModifiedProperties();
                serializedObject.Update();
            }

            EditorGUILayout.LabelField("Count of languages: " + property.arraySize);

            EditorGUILayout.EndHorizontal();

            bool delete = false;
            int deleteIndex = 0;

            for (int i = 0; i < property.arraySize; i++)
            {
                EditorGUILayout.BeginHorizontal(EditorStyles.toolbar);

                EditorGUILayout.PropertyField(property.GetArrayElementAtIndex(i));
                
                if(GUILayout.Button("Delete", EditorStyles.toolbarButton, GUILayout.Width(70.0f)))
                {
                    delete = true;
                    deleteIndex = i;
                }


                EditorGUILayout.EndHorizontal();
            }

            if (delete)
                property.DeleteArrayElementAtIndex(deleteIndex);

            serializedObject.ApplyModifiedProperties();
        }
    }
}