internal static IEnumerable <T> FindChildrenByType <T>(this DependencyObject element) where T : DependencyObject
{
return(element.ChildrenOfType <T>());
}
/// <summary>
/// Does a deep search of the element tree, trying to find a descendant of the given type
/// (including the element itself).
/// </summary>
/// <returns>True if the target is one of the elements.</returns>
internal static T GetFirstDescendantOfType <T>(this DependencyObject target) where T : DependencyObject
{
return(target as T ?? target.ChildrenOfType <T>().FirstOrDefault());
}
/// <summary>
/// Finds child element of the specified type. Uses breadth-first search.
/// </summary>
/// <typeparam name="T">
/// The type of the child that will be searched in the object hierarchy. The type should be <see cref="DependencyObject"/>.
/// </typeparam>
/// <param name="element">The target <see cref="DependencyObject"/> which children will be traversed.</param>
/// <returns>The first child element that is of the specified type.</returns>
public static T FindChildByType <T>(this DependencyObject element) where T : DependencyObject
{
return(element.ChildrenOfType <T>().FirstOrDefault());
}
