/// <summary>
/// Creates a new sub-directory with a default name in this directory.
/// </summary>
/// <param name="editing">Indicates whether the new sub-directory should be put in edit mode immediately when constructed.</param>
/// <returns>A new instance of <see cref="DirectoryViewModel"/> representing the new sub-directory.</returns>
public DirectoryViewModel CreateSubDirectory(bool editing)
{
var newDirectory = new DirectoryViewModel(NamingHelper.ComputeNewName(NewFolderDefaultName, SubDirectories.Cast <DirectoryBaseViewModel>(), x => x.Name), this, true)
{
IsEditing = editing
};
return(newDirectory);
}
void IAddChildViewModel.AddChildren(IReadOnlyCollection <object> children, AddChildModifiers modifiers)
{
int directoriesMoved = 0;
int assetsMoved = 0;
DirectoryViewModel singleDirectoryMoved = null;
AssetViewModel singleAssetMoved = null;
using (var transaction = UndoRedoService.CreateTransaction())
{
foreach (var child in children)
{
var directory = child as DirectoryViewModel;
var asset = child as AssetViewModel;
if (directory != null)
{
++directoriesMoved;
singleDirectoryMoved = directoriesMoved == 1 ? directory : null;
var hierarchy = new List <DirectoryBaseViewModel>();
directory.GetDirectoryHierarchy(hierarchy);
assetsMoved += hierarchy.Select(x => x.Assets.Count).Sum();
singleAssetMoved = assetsMoved == 1 ? hierarchy.SelectMany(x => x.Assets).FirstOrDefault() : null;
directory.Parent = this;
}
if (asset != null)
{
++assetsMoved;
singleAssetMoved = assetsMoved == 1 ? asset : null;
Package.MoveAsset(asset, this);
}
}
string message = "";
if (singleDirectoryMoved != null)
{
message = $"Move directory '{singleDirectoryMoved.Name}'";
}
else if (directoriesMoved > 1)
{
message = $"Move {directoriesMoved} directories";
}
if (assetsMoved > 0)
{
message += message.Length > 0 ? " and " : "Move ";
if (singleAssetMoved != null)
{
message += $"asset '{singleAssetMoved.Url}'";
}
else
{
message += $"{assetsMoved} assets";
}
}
UndoRedoService.SetName(transaction, message);
}
}
private static int CompareDirectories(DirectoryViewModel x, DirectoryViewModel y)
{
if (x == null && y == null)
{
return(0);
}
if (x != null && y != null)
{
return(string.Compare(x.Name, y.Name, StringComparison.OrdinalIgnoreCase));
}
return(x == null ? -1 : 1);
}