/// <summary>
/// Waits for the element to load (construct and add to the main object tree).
/// </summary>
public static async Task WaitForLoadedAsync(this FrameworkElement frameworkElement)
{
if (frameworkElement.IsInVisualTree())
{
return;
}
await EventAsync.FromRoutedEvent(
eh => frameworkElement.Loaded += eh,
eh => frameworkElement.Loaded -= eh);
}
/// <summary>
/// Waits for the next layout update event.
/// </summary>
/// <param name="frameworkElement">The framework element.</param>
/// <returns></returns>
public static async Task WaitForLayoutUpdateAsync(this FrameworkElement frameworkElement)
{
await EventAsync.FromEvent <object>(
eh => frameworkElement.LayoutUpdated += eh,
eh => frameworkElement.LayoutUpdated -= eh);
}
/// <summary>
/// Waits for the element to unload (disconnect from the main object tree).
/// </summary>
public static async Task WaitForUnloadedAsync(this FrameworkElement frameworkElement)
{
await EventAsync.FromRoutedEvent(
eh => frameworkElement.Unloaded += eh,
eh => frameworkElement.Unloaded -= eh);
}
