src/ScreenGrab/Extensions/DependencyExtensions.cs

using System.Windows;

namespace ScreenGrab.Extensions;

public static class DependencyExtensions
{
    #region Public Methods

    /// <summary>
    ///     Sets the value of the <paramref name="property" /> only if it hasn't been explicitly set.
    /// </summary>
    public static bool SetIfDefault<T>(this DependencyObject o, DependencyProperty property, T value)
    {
        if (DependencyPropertyHelper.GetValueSource(o, property).BaseValueSource == BaseValueSource.Default)
        {
            o.SetValue(property, value);

            return true;
        }

        return false;
    }

    #endregion Public Methods
}