// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

#nullable disable

using System.Windows;
using System.Windows.Media;

namespace Microsoft.VisualStudio.LanguageServices.Implementation;

internal static class DependencyObjectExtensions
{
    public static DependencyObject TryGetParent(this DependencyObject obj)
    {
        return (obj is Visual) ? VisualTreeHelper.GetParent(obj) : null;
    }

    public static T GetParentOfType<T>(this DependencyObject element) where T : Visual
    {
        var parent = element.TryGetParent();
        if (parent is T)
        {
            return (T)parent;
        }

        if (parent == null)
        {
            return null;
        }

        return parent.GetParentOfType<T>();
    }
}
