74 lines
3.0 KiB
C#
74 lines
3.0 KiB
C#
using System;
|
|
using System.Linq.Expressions;
|
|
using UnityEditor;
|
|
|
|
namespace Cinemachine.Editor
|
|
{
|
|
/// <summary>
|
|
/// Helpers for the editor relating to SerializedPropertys
|
|
/// </summary>
|
|
public static class SerializedPropertyHelper
|
|
{
|
|
/// <summary>
|
|
/// This is a way to get a field name string in such a manner that the compiler will
|
|
/// generate errors for invalid fields. Much better than directly using strings.
|
|
/// Usage: instead of
|
|
/// <code>
|
|
/// "m_MyField";
|
|
/// </code>
|
|
/// do this:
|
|
/// <code>
|
|
/// MyClass myclass = null;
|
|
/// SerializedPropertyHelper.PropertyName( () => myClass.m_MyField);
|
|
/// </code>
|
|
/// </summary>
|
|
/// <param name="exp">Magic expression that resolves to a field: () => myClass.m_MyField</param>
|
|
/// <returns></returns>
|
|
public static string PropertyName(Expression<Func<object>> exp)
|
|
{
|
|
var body = exp.Body as MemberExpression;
|
|
if (body == null)
|
|
{
|
|
var ubody = (UnaryExpression)exp.Body;
|
|
body = ubody.Operand as MemberExpression;
|
|
}
|
|
return body.Member.Name;
|
|
}
|
|
|
|
/// <summary>
|
|
/// A compiler-assisted (non-string-based) way to call SerializedProperty.FindProperty
|
|
/// </summary>
|
|
/// <param name="obj">The serialized object to search</param>
|
|
/// <param name="exp">Magic expression that resolves to a field: () => myClass.m_MyField</param>
|
|
/// <returns>The resulting SerializedProperty, or null</returns>
|
|
public static SerializedProperty FindProperty(this SerializedObject obj, Expression<Func<object>> exp)
|
|
{
|
|
return obj.FindProperty(PropertyName(exp));
|
|
}
|
|
|
|
/// <summary>
|
|
/// A compiler-assisted (non-string-based) way to call SerializedProperty.FindPropertyRelative
|
|
/// </summary>
|
|
/// <param name="obj">The serialized object to search</param>
|
|
/// <param name="exp">Magic expression that resolves to a field: () => myClass.m_MyField</param>
|
|
/// <returns>The resulting SerializedProperty, or null</returns>
|
|
public static SerializedProperty FindPropertyRelative(this SerializedProperty obj, Expression<Func<object>> exp)
|
|
{
|
|
return obj.FindPropertyRelative(PropertyName(exp));
|
|
}
|
|
|
|
/// <summary>Get the value of a proprty, as an object</summary>
|
|
/// <param name="property">The property to query</param>
|
|
/// <returns>The object value of the property</returns>
|
|
public static object GetPropertyValue(SerializedProperty property)
|
|
{
|
|
var targetObject = property.serializedObject.targetObject;
|
|
var targetObjectClassType = targetObject.GetType();
|
|
var field = targetObjectClassType.GetField(property.propertyPath);
|
|
if (field != null)
|
|
return field.GetValue(targetObject);
|
|
return null;
|
|
}
|
|
}
|
|
}
|