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71 行
2.5 KiB
71 行
2.5 KiB
using System.Collections.Generic;
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using System.Reflection;
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using UnityEditor;
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using UnityEngine;
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namespace NaughtyAttributes.Editor
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{
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[PropertyDrawer(typeof(EnableIfAttribute))]
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public class EnableIfPropertyDrawer : PropertyDrawer
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{
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public override void DrawProperty(SerializedProperty property)
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{
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EnableIfAttribute enableIfAttribute = PropertyUtility.GetAttribute<EnableIfAttribute>(property);
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UnityEngine.Object target = PropertyUtility.GetTargetObject(property);
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List<bool> conditionValues = new List<bool>();
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foreach (var condition in enableIfAttribute.Conditions)
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{
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FieldInfo conditionField = ReflectionUtility.GetField(target, condition);
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if (conditionField != null &&
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conditionField.FieldType == typeof(bool))
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{
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conditionValues.Add((bool)conditionField.GetValue(target));
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}
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MethodInfo conditionMethod = ReflectionUtility.GetMethod(target, condition);
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if (conditionMethod != null &&
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conditionMethod.ReturnType == typeof(bool) &&
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conditionMethod.GetParameters().Length == 0)
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{
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conditionValues.Add((bool)conditionMethod.Invoke(target, null));
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}
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}
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if (conditionValues.Count > 0)
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{
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bool enabled;
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if (enableIfAttribute.ConditionOperator == ConditionOperator.And)
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{
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enabled = true;
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foreach (var value in conditionValues)
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{
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enabled = enabled && value;
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}
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}
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else
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{
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enabled = false;
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foreach (var value in conditionValues)
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{
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enabled = enabled || value;
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}
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}
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if (enableIfAttribute.Reversed)
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{
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enabled = !enabled;
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}
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GUI.enabled = enabled;
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EditorDrawUtility.DrawPropertyField(property);
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GUI.enabled = true;
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}
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else
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{
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string warning = enableIfAttribute.GetType().Name + " needs a valid boolean condition field or method name to work";
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EditorDrawUtility.DrawHelpBox(warning, MessageType.Warning, context: target);
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}
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}
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}
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}
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