/// <summary>
/// Splits a block in two at the given index.
/// </summary>
/// <param name="operation">Details of the operation performed.</param>
public virtual void SplitBlock(WriteableSplitBlockOperation operation)
{
int SplitBlockIndex = operation.BlockIndex;
Debug.Assert(SplitBlockIndex >= 0 && SplitBlockIndex < BlockStateList.Count);
int SplitIndex = operation.Index;
Debug.Assert(SplitIndex > 0);
IWriteableBlockState BlockState = (IWriteableBlockState)BlockStateList[SplitBlockIndex];
Debug.Assert(SplitIndex < BlockState.StateList.Count);
IBlock NewBlock = operation.NewBlock;
Debug.Assert(NewBlock != null);
NodeTreeHelperBlockList.SplitBlock(Owner.Node, PropertyName, SplitBlockIndex, SplitIndex, NewBlock);
NodeTreeHelperBlockList.GetChildNode(NewBlock, 0, out Node NewBlockFirstNode);
IWriteableBrowsingNewBlockNodeIndex NewBlockIndex = CreateNewBlockNodeIndex(NewBlockFirstNode, SplitBlockIndex);
IWriteableBlockState NewBlockState = (IWriteableBlockState)CreateBlockState(NewBlockIndex, NewBlock);
((IWriteableBlockState <IWriteableInner <IWriteableBrowsingChildIndex> >)NewBlockState).InitBlockState();
InsertInBlockStateList(NewBlockIndex.BlockIndex, NewBlockState);
for (int i = 0; i < SplitIndex; i++)
{
IWriteablePlaceholderNodeState State = (IWriteablePlaceholderNodeState)BlockState.StateList[0];
IWriteableBrowsingExistingBlockNodeIndex ChildNodeIndex = State.ParentIndex as IWriteableBrowsingExistingBlockNodeIndex;
Debug.Assert(ChildNodeIndex != null);
BlockState.Remove(ChildNodeIndex, 0);
NewBlockState.Insert(ChildNodeIndex, i, State);
}
operation.Update(NewBlockState);
for (int i = 0; i < BlockState.StateList.Count; i++)
{
IWriteablePlaceholderNodeState State = (IWriteablePlaceholderNodeState)BlockState.StateList[i];
IWriteableBrowsingExistingBlockNodeIndex ChildNodeIndex = State.ParentIndex as IWriteableBrowsingExistingBlockNodeIndex;
Debug.Assert(ChildNodeIndex != null);
ChildNodeIndex.MoveBlockUp();
for (int j = 0; j < SplitIndex; j++)
{
ChildNodeIndex.MoveDown();
}
}
for (int i = SplitBlockIndex + 2; i < BlockStateList.Count; i++)
{
foreach (IWriteablePlaceholderNodeState State in BlockStateList[i].StateList)
{
IWriteableBrowsingExistingBlockNodeIndex ChildNodeIndex = State.ParentIndex as IWriteableBrowsingExistingBlockNodeIndex;
Debug.Assert(ChildNodeIndex != null);
ChildNodeIndex.MoveBlockUp();
}
}
}