public override void DoImpl()
{
Func <int, String> namegen = i => i == 1 ? BranchInClipboard.Name : String.Format(
Resources.New_BranchDefaultPastedName, BranchInClipboard.Name, i - 1);
var lastUsedIndex = 1.Seq(i => i + 1, i => Branch.GetBranches().Any(b => b.Name == namegen(i))).LastOrDefault();
var unusedName = namegen(lastUsedIndex + 1);
#if DOWNGRADE_STRUCTURE_VERSION_TO_REV299
// one can't use SetDefault() here, because the default value will be copied
// from the clipboard rather than created manually
CreatedBranch = Branch.CreateBranch(unusedName).SetId(Guid.NewGuid());
#else
// upd. safe to use SetDefault2 because branches no longer have default values
CreatedBranch = Branch.CreateBranch(unusedName).SetDefault2();
#endif
// the line below works fine only because the branch in clipboard is actually a clone that is disconnected from reality.
// only imagine what if you press Ctrl+C on a branch w/o sub-branches for simplicity and then sequentially press Ctrl+V
// 1st paste will actually work fine and create a sub-branch w/o no sub-branches and the same values as the source branch had
// 2nd paste will use THE CHANGED source branch and will created a sub-sub-branch with a single sub-branch (which is counter-intuitive)
var branches = BranchInClipboard.GetBranchesRecursive();
branches.ForEach(b => CreatedBranch.GetOrCreateBranch(b.VPath - BranchInClipboard.VPath));
BranchInClipboard.GetValuesRecursive().ForEach(v => CreatedBranch
.CreateValue(v.VPath - BranchInClipboard.VPath, () => v.ContentStream)
.SetDefault2().SetTypeToken2(v.GetTypeToken2()));
Tree.SelectedNode = Tree.Nodes[0].SelectNode(Branch.VPath);
Tree.SelectedNode = Ctx.CreateTreeNodesRecursive(Tree.SelectedNode, CreatedBranch);
}
public override void UndoImpl()
{
Branch.Parent.AttachBranch(Branch);
var p = Tree.Nodes[0].SelectNode(Branch.VPath.Parent).AssertNotNull();
Tree.SelectedNode = Ctx.CreateTreeNodesRecursive(p, Branch);
}