/// <summary>
/// Inserts a new node in a list or block list.
/// </summary>
/// <param name="inner">The inner for the list or block list where the node is inserted.</param>
/// <param name="insertedIndex">Index for the insertion operation.</param>
/// <param name="nodeIndex">Index of the inserted node upon return.</param>
public virtual void Insert(IWriteableCollectionInner inner, IWriteableInsertionCollectionNodeIndex insertedIndex, out IWriteableBrowsingCollectionNodeIndex nodeIndex)
{
Contract.RequireNotNull(inner, out IWriteableCollectionInner Inner);
Contract.RequireNotNull(insertedIndex, out IWriteableInsertionCollectionNodeIndex InsertedIndex);
IWriteableNodeState Owner = Inner.Owner;
IWriteableIndex ParentIndex = Owner.ParentIndex;
Debug.Assert(Contains(ParentIndex));
Debug.Assert(IndexToState(ParentIndex) == Owner);
WriteableInnerReadOnlyDictionary <string> InnerTable = Owner.InnerTable;
Debug.Assert(InnerTable.ContainsKey(Inner.PropertyName));
Debug.Assert(InnerTable[Inner.PropertyName] == Inner);
bool IsHandled = false;
nodeIndex = null;
if (Inner is IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex> AsBlockListInner && InsertedIndex is IWriteableInsertionNewBlockNodeIndex AsNewBlockIndex)
{
InsertNewBlock(AsBlockListInner, AsNewBlockIndex, out nodeIndex);
IsHandled = true;
}
else if (Inner is IWriteableCollectionInner <IWriteableBrowsingCollectionNodeIndex> AsCollectionInner && InsertedIndex is IWriteableInsertionCollectionNodeIndex AsCollectionIndex)
{
InsertNewNode(AsCollectionInner, AsCollectionIndex, out nodeIndex);
IsHandled = true;
}
Debug.Assert(IsHandled);
}
private protected virtual void InsertNewNode(IWriteableCollectionInner <IWriteableBrowsingCollectionNodeIndex> inner, IWriteableInsertionCollectionNodeIndex insertedIndex, out IWriteableBrowsingCollectionNodeIndex nodeIndex)
{
IndexToPositionAndNode(insertedIndex, out int BlockIndex, out int Index, out _, out Node Node);
Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoInsertNewNode(operation);
Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => UndoInsertNewNode(operation);
WriteableInsertNodeOperation Operation = CreateInsertNodeOperation(inner.Owner.Node, inner.PropertyName, BlockIndex, Index, Node, HandlerRedo, HandlerUndo, isNested: false);
Operation.Redo();
SetLastOperation(Operation);
CheckInvariant();
nodeIndex = Operation.BrowsingIndex;
}