72 lines
2.5 KiB
C#
72 lines
2.5 KiB
C#
using System;
|
|
using System.Linq;
|
|
using System.Reflection;
|
|
using Module.Inspector.Editor.Utilities;
|
|
using UnityEditor;
|
|
using UnityEngine;
|
|
|
|
namespace Module.Inspector.Editor
|
|
{
|
|
[CustomPropertyDrawer(typeof(PopupFromConst))]
|
|
internal sealed class DrawerPopupFromConst : DrawerPropertyDrawer
|
|
{
|
|
private GUIContent[] names;
|
|
private string[] values;
|
|
|
|
public override bool Draw(Rect position, DrawerPropertyAttribute attribute, SerializedProperty property, GUIContent label, EditorPropertyUtility.Result result)
|
|
{
|
|
if (property.propertyType != SerializedPropertyType.String)
|
|
return false;
|
|
|
|
var att = (PopupFromConst)attribute;
|
|
FetchConstArray(att);
|
|
|
|
EditorGUI.BeginChangeCheck();
|
|
EditorGUI.BeginProperty(position, label, property);
|
|
{
|
|
int index = Array.IndexOf(values, property.stringValue);
|
|
int newIndex = EditorGUI.Popup(position, label, index, names);
|
|
|
|
if (newIndex != -1 && index != newIndex)
|
|
property.stringValue = values[newIndex];
|
|
}
|
|
EditorGUI.EndProperty();
|
|
bool changed = EditorGUI.EndChangeCheck();
|
|
|
|
if (changed)
|
|
property.serializedObject.ApplyModifiedProperties();
|
|
|
|
return true;
|
|
}
|
|
|
|
public override string GetErrorMessage(SerializedProperty property)
|
|
{
|
|
return "Only supports integers";
|
|
}
|
|
|
|
private void FetchConstArray(PopupFromConst attribute)
|
|
{
|
|
if (names != null)
|
|
return;
|
|
|
|
FieldInfo[] fields = attribute.type.GetFields(BindingFlags.Public | BindingFlags.Static | BindingFlags.FlattenHierarchy)
|
|
.Where(fi => fi.IsLiteral && !fi.IsInitOnly && fi.FieldType == typeof(string))
|
|
.ToArray();
|
|
|
|
names = new GUIContent[fields.Length + 1];
|
|
values = new string[fields.Length + 1];
|
|
|
|
names[0] = new GUIContent("-- Empty --");
|
|
values[0] = string.Empty;
|
|
|
|
for (var i = 0; i < fields.Length; i++)
|
|
{
|
|
FieldInfo fi = fields[i];
|
|
var value = (string)fi.GetValue(null);
|
|
|
|
names[i + 1] = new GUIContent(value);
|
|
values[i + 1] = value;
|
|
}
|
|
}
|
|
}
|
|
} |