/// <summary>
/// Returns a rooted directory that new files should added to the project under when the user
/// initiates an Add New Item operation on a particular node in the tree.
/// </summary>
/// <param name="provider">
/// The <see cref="IProjectTreeProvider"/> that provides the directory.
/// </param>
/// <param name="target">
/// The <see cref="IProjectTree"/> in the tree that is the receiver of the Add New Item operation.
/// </param>
/// <returns>
/// A <see cref="string"/> containing the path path under which to save the new items, or <see langword="null"/>
/// if <paramref name="target"/> does not support adding new items.
/// </returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="provider"/> is <see langword="null"/>.
/// <para>
/// -or-
/// </para>
/// <paramref name="target"/> is <see langword="null"/>.
/// </exception>
public static string GetRootedAddNewItemDirectory(this IProjectTreeProvider provider, IProjectTree target)
{
Requires.NotNull(provider, nameof(provider));
Requires.NotNull(target, nameof(target));
string relativePath = provider.GetAddNewItemDirectory(target);
if (relativePath == null)
{
return(null);
}
string projectFilePath = provider.GetPath(target.Root);
string rootPath = Path.GetDirectoryName(projectFilePath);
return(Path.Combine(rootPath, relativePath));
}
private string?GetFilePath(IProjectTreeProvider provider, IProjectTree node)
{
return(_isFolder ? provider.GetRootedAddNewItemDirectory(node) : provider.GetPath(node));
}