/// <summary>
/// Updates the DesiredSize of a UIElement. Typically, objects that implement custom layout for their
/// layout children call this method from their own MeasureOverride implementations to form a recursive layout update.
/// </summary>
/// <param name="availableSize">
/// The available space that a parent can allocate to a child object. A child object can request a larger
/// space than what is available; the provided size might be accommodated if scrolling or other resize behavior is
/// possible in that particular container.
/// </param>
/// <returns>The measured size.</returns>
/// <remarks>
/// Under Uno.UI, this method should not be called during the normal layouting phase. Instead, use the
/// <see cref="MeasureElement(View, Size)"/> methods, which handles native view properly.
/// </remarks>
public override void Measure(Size availableSize)
{
if (double.IsNaN(availableSize.Width) || double.IsNaN(availableSize.Height))
{
throw new InvalidOperationException($"Cannot measure [{GetType()}] with NaN");
}
_layouter.Measure(availableSize);
OnMeasurePartial(availableSize);
}
/// <summary>
/// Updates the DesiredSize of a UIElement. Typically, objects that implement custom layout for their
/// layout children call this method from their own MeasureOverride implementations to form a recursive layout update.
/// </summary>
/// <param name="availableSize">
/// The available space that a parent can allocate to a child object. A child object can request a larger
/// space than what is available; the provided size might be accommodated if scrolling or other resize behavior is
/// possible in that particular container.
/// </param>
/// <returns>The measured size.</returns>
/// <remarks>
/// Under Uno.UI, this method should not be called during the normal layouting phase. Instead, use the
/// <see cref="MeasureElement(View, Size)"/> methods, which handles native view properly.
/// </remarks>
public override void Measure(Size availableSize)
{
_layouter.Measure(availableSize);
OnMeasurePartial(availableSize);
}