/// <summary>
/// Moves keyboard focus to visible member or nested visible member at given path.
/// If at any point while traversing down the member path the method fails to find the next member, then it will select the searched parent drawer instead.
/// </summary>
/// <param name="parent"> The parent drawer relative to which we are making the selection. </param>
/// <param name="memberPath">
/// The path to the member drawer.
/// If selecting a direct member, then this equates to the name of the drawer.
/// If selecting a nested member, then the first part of the path should be the name of the direct member drawer, followed by a slash character ('/') separator, followed by the rest of the path to the nested member.
/// </param>
/// <param name="reason"></param>
/// <param name="unfoldParentsAsNeeded"></param>
/// <returns> Selected drawer. </returns>
public static IDrawer Select([NotNull] this IParentDrawer parent, [NotNull] string memberPath, ReasonSelectionChanged reason, bool unfoldParentsAsNeeded)
{
int directMemberNameEndsAt = memberPath.IndexOf('/');
string directMemberName;
if (directMemberNameEndsAt != -1)
{
directMemberName = memberPath.Substring(0, directMemberNameEndsAt);
memberPath = memberPath.Substring(directMemberNameEndsAt + 1);
}
else
{
directMemberName = memberPath;
}
if (!parent.Unfolded && parent.Foldable)
{
if (unfoldParentsAsNeeded)
{
parent.Select(reason);
return(parent);
}
parent.SetUnfolded(true);
}
var member = parent.FindVisibleMember(directMemberName);
if (member == null)
{
parent.Select(reason);
return(parent);
}
if (memberPath.Length == 0)
{
member.Select(reason);
return(member);
}
var memberAsParent = member as IParentDrawer;
if (memberAsParent == null)
{
member.Select(reason);
return(member);
}
return(memberAsParent.Select(memberPath, reason, unfoldParentsAsNeeded));
}
