PropertySetReferenceNode.cs

// 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.

#if WINAPPSDK
using Microsoft.UI.Composition;
#else
using Windows.UI.Composition;
#endif

namespace CommunityToolkit.WinUI.Animations.Expressions;

/// <summary>
/// Class PropertySetReferenceNode.
/// </summary>
/// <seealso cref="CommunityToolkit.WinUI.Animations.Expressions.ReferenceNode" />
public partial class PropertySetReferenceNode : ReferenceNode
{
    /// <summary>
    /// Initializes a new instance of the <see cref="PropertySetReferenceNode"/> class.
    /// </summary>
    /// <param name="paramName">Name of the parameter.</param>
    /// <param name="ps">The ps.</param>
#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
    internal PropertySetReferenceNode(string paramName, CompositionPropertySet? ps = null)
        : base(paramName!, ps)
    {
    }

    /// <summary>
    /// Initializes a new instance of the <see cref="PropertySetReferenceNode"/> class.
    /// </summary>
    // Needed for GetSpecializedReference<>()
    internal PropertySetReferenceNode()
        : base(null!, null)
    {
    }
#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.

    /// <summary>
    /// Gets or sets the source.
    /// </summary>
    /// <value>The source.</value>
    internal CompositionPropertySet Source { get; set; }

    /// <summary>
    /// Creates the target reference.
    /// </summary>
    /// <returns>PropertySetReferenceNode.</returns>
    internal static PropertySetReferenceNode CreateTargetReference()
    {
        var node = new PropertySetReferenceNode(null!);
        node.NodeType = ExpressionNodeType.TargetReference;

        return node;
    }
}