/// <summary>
/// Finds all components of type <typeparamref name="TComponent"/> in the render tree of
/// this <see cref="IRenderedFragment"/>.
/// </summary>
/// <typeparam name="TComponent">Type of components to find.</typeparam>
/// <returns>The <see cref="IRenderedComponent{T}"/>s</returns>
public static IReadOnlyList <IRenderedComponent <TComponent> > FindComponents <TComponent>(this IRenderedFragment renderedFragment) where TComponent : IComponent
{
if (renderedFragment is null)
{
throw new ArgumentNullException(nameof(renderedFragment));
}
var renderer = renderedFragment.Services.GetRequiredService <ITestRenderer>();
var components = renderer.FindComponents <TComponent>(renderedFragment.ComponentId);
var result = components.Count == 0 ? Array.Empty <IRenderedComponent <TComponent> >() : new IRenderedComponent <TComponent> [components.Count];
for (int i = 0; i < components.Count; i++)
{
result[i] = new RenderedComponent <TComponent>(renderedFragment.Services, components[i].ComponentId, components[i].Component);
}
return(result);
}
/// <inheritdoc/>
public virtual IRenderedComponent <TComponent> RenderComponent <TComponent>(params ComponentParameter[] parameters) where TComponent : class, IComponent
{
var result = new RenderedComponent <TComponent>(this, parameters);
return(result);
}