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using System;
namespace UnityEditor.Timeline
{
// Tells a custom [[TrackDrawer]] which [[TrackAsset]] it's a drawer for.
sealed class CustomTrackDrawerAttribute : Attribute
{
public Type assetType;
public CustomTrackDrawerAttribute(Type type)
{
assetType = type;
}
}
/// <summary>
/// Attribute that specifies a class as an editor for an extended Timeline type.
/// </summary>
/// <remarks>
/// Use this attribute on a class that extends ClipEditor, TrackEditor, or MarkerEditor to specify either the PlayableAsset, Marker, or TrackAsset derived classes for associated customization.
/// </remarks>
/// <example>
/// [CustomTimelineEditor(typeof(LightControlClip))]
/// class LightControlClipEditor : ClipEditor
/// {
/// }
/// </example>
[AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = true)]
public sealed class CustomTimelineEditorAttribute : Attribute
{
/// <summary>
/// The type that that this editor applies to.
/// </summary>
public Type classToEdit { get; private set; }
/// <summary>
/// Constructor.
/// </summary>
/// <param name="type"> The type that that this editor applies to.</param>
/// <exception cref="ArgumentNullException">Thrown if type is null</exception>
public CustomTimelineEditorAttribute(Type type)
{
if (type == null)
throw new System.ArgumentNullException(nameof(type));
classToEdit = type;
}
}
}
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