/// <inheritdoc/>
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (TypeUtilities.CanCast <TIn>(value))
{
return(_convert((TIn)value));
}
else
{
return(AvaloniaProperty.UnsetValue);
}
}
/// <summary>
/// Casts a strongly typed match function to a weakly typed one.
/// </summary>
/// <param name="f">The strongly typed function.</param>
/// <returns>The weakly typed function.</returns>
private static Func <object?, bool> CastMatch(Func <T, bool> f)
{
return(o => TypeUtilities.CanCast <T>(o) && f((T)o !));
}
/// <summary>
/// Initializes a new instance of the <see cref="FuncDataTemplate{T}"/> class.
/// </summary>
/// <param name="build">
/// A function which when passed an object of <typeparamref name="T"/> returns a control.
/// </param>
/// <param name="supportsRecycling">Whether the control can be recycled.</param>
public FuncDataTemplate(Func <T, INameScope, IControl?> build, bool supportsRecycling = false)
: base(o => TypeUtilities.CanCast <T>(o), CastBuild(build), supportsRecycling)
{
}