91 lines
3.6 KiB
C#
91 lines
3.6 KiB
C#
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEditor;
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using System;
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namespace MoreMountains.Tools
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{
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[CustomPropertyDrawer(typeof(MMDropdownAttribute))]
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public class MMDropdownAttributeDrawer : PropertyDrawer
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{
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protected MMDropdownAttribute _dropdownAttribute;
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protected string[] _dropdownValues;
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protected int _selectedDropdownValueIndex = -1;
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protected Type _propertyType;
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#if UNITY_EDITOR
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public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
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{
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if (_dropdownAttribute == null)
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{
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_dropdownAttribute = (MMDropdownAttribute)attribute;
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if (_dropdownAttribute.DropdownValues == null || _dropdownAttribute.DropdownValues.Length == 0)
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{
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return;
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}
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_propertyType = _dropdownAttribute.DropdownValues[0].GetType();
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_dropdownValues = new string[_dropdownAttribute.DropdownValues.Length];
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for (int i = 0; i < _dropdownAttribute.DropdownValues.Length; i++)
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{
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_dropdownValues[i] = _dropdownAttribute.DropdownValues[i].ToString();
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}
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bool found = false;
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for (var i = 0; i < _dropdownValues.Length; i++)
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{
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if ((_propertyType == typeof(string)) && property.stringValue == _dropdownValues[i])
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{
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_selectedDropdownValueIndex = i;
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found = true;
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break;
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}
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if ((_propertyType == typeof(int)) && property.intValue == Convert.ToInt32(_dropdownValues[i]))
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{
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_selectedDropdownValueIndex = i;
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found = true;
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break;
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}
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if ((_propertyType == typeof(float)) && Mathf.Approximately(property.floatValue, Convert.ToSingle(_dropdownValues[i])))
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{
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_selectedDropdownValueIndex = i;
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found = true;
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break;
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}
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}
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if (!found)
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{
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_selectedDropdownValueIndex = 0;
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}
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}
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if ((_dropdownValues == null) || (_dropdownValues.Length == 0) || (_selectedDropdownValueIndex < 0))
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{
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EditorGUI.PropertyField(position, property, label);
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return;
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}
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EditorGUI.BeginChangeCheck();
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_selectedDropdownValueIndex = EditorGUI.Popup(position, label.text, _selectedDropdownValueIndex, _dropdownValues);
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if (EditorGUI.EndChangeCheck())
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{
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if (_propertyType == typeof(string))
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{
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property.stringValue = _dropdownValues[_selectedDropdownValueIndex];
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}
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else if (_propertyType == typeof(int))
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{
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property.intValue = Convert.ToInt32(_dropdownValues[_selectedDropdownValueIndex]);
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}
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else if (_propertyType == typeof(float))
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{
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property.floatValue = Convert.ToSingle(_dropdownValues[_selectedDropdownValueIndex]);
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}
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property.serializedObject.ApplyModifiedProperties();
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}
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}
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#endif
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}
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}
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