/// <summary>
/// Modifies the index to address the next position in a list.
/// </summary>
public virtual void MoveUp()
{
NodeTreeHelperBlockList.GetLastBlockChildIndex(ParentNode, PropertyName, BlockIndex, out int LastIndex);
Debug.Assert(Index + 1 < LastIndex);
Index++;
}
/// <summary>
/// Initializes a new instance of the <see cref="WriteableInsertionExistingBlockNodeIndex"/> class.
/// </summary>
/// <param name="parentNode">Node containing the block list.</param>
/// <param name="propertyName">Property in <paramref name="parentNode"/> corresponding to the block list..</param>
/// <param name="node">Inserted node.</param>
/// <param name="blockIndex">Position of the block in the block list.</param>
/// <param name="index">Position where to insert <paramref name="node"/> in the block.</param>
public WriteableInsertionExistingBlockNodeIndex(INode parentNode, string propertyName, INode node, int blockIndex, int index)
: base(parentNode, propertyName, node)
{
Debug.Assert(blockIndex >= 0);
Debug.Assert(index >= 0); // You can insert at position 0, contrary to a browsing index that only supports positions other than 0.
Debug.Assert(NodeTreeHelperBlockList.GetLastBlockChildIndex(parentNode, propertyName, blockIndex, out int LastIndex) && index <= LastIndex);
BlockIndex = blockIndex;
Index = index;
}