EditorAttribute.cs

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using System.Diagnostics.CodeAnalysis;
 
namespace System.ComponentModel;
 
[AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = true)]
public sealed class EditorAttribute : Attribute
{
    private string _typeId;
 
    [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)]
    public string? EditorBaseTypeName { get; }
 
    [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)]
    public string EditorTypeName { get; }
 
    public override object TypeId
    {
        get
        {
            if (_typeId == null)
            {
                string text = EditorBaseTypeName ?? string.Empty;
                int num = text.IndexOf(',');
                if (num != -1)
                {
                    text = text.Substring(0, num);
                }
                _typeId = GetType().FullName + text;
            }
            return _typeId;
        }
    }
 
    public EditorAttribute()
    {
        EditorTypeName = string.Empty;
        EditorBaseTypeName = string.Empty;
    }
 
    public EditorAttribute([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] string typeName, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] string? baseTypeName)
    {
        EditorTypeName = typeName ?? throw new ArgumentNullException("typeName");
        EditorBaseTypeName = baseTypeName;
    }
 
    public EditorAttribute([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] string typeName, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] Type baseType)
    {
        if (typeName == null)
        {
            throw new ArgumentNullException("typeName");
        }
        if (baseType == null)
        {
            throw new ArgumentNullException("baseType");
        }
        EditorTypeName = typeName;
        EditorBaseTypeName = baseType.AssemblyQualifiedName;
    }
 
    public EditorAttribute([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] Type type, [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] Type baseType)
    {
        if (type == null)
        {
            throw new ArgumentNullException("type");
        }
        if (baseType == null)
        {
            throw new ArgumentNullException("baseType");
        }
        EditorTypeName = type.AssemblyQualifiedName;
        EditorBaseTypeName = baseType.AssemblyQualifiedName;
    }
 
    public override bool Equals(object? obj)
    {
        if (obj == this)
        {
            return true;
        }
        if (obj is EditorAttribute editorAttribute && editorAttribute.EditorTypeName == EditorTypeName)
        {
            return editorAttribute.EditorBaseTypeName == EditorBaseTypeName;
        }
        return false;
    }
 
    public override int GetHashCode()
    {
        return base.GetHashCode();
    }
}