private protected virtual void Remove(IWriteableRemoveBlockOperation blockOperation, WriteableRemoveNodeOperation nodeOperation, int blockIndex, int index)
{
Debug.Assert(blockIndex >= 0 && blockIndex < BlockStateList.Count);
IWriteableBlockState BlockState = (IWriteableBlockState)BlockStateList[blockIndex];
Debug.Assert(index >= 0 && index < BlockState.StateList.Count);
IBlock ChildBlock = BlockState.ChildBlock;
Node ParentNode = Owner.Node;
int i;
IWriteablePlaceholderNodeState OldChildState = (IWriteablePlaceholderNodeState)BlockState.StateList[index];
Node RemovedNode = OldChildState.Node;
BlockState.Remove((IWriteableBrowsingBlockNodeIndex)OldChildState.ParentIndex, index);
NodeTreeHelperBlockList.RemoveFromBlock(ParentNode, PropertyName, blockIndex, index, out bool IsBlockRemoved);
if (IsBlockRemoved)
{
Debug.Assert(blockOperation != null);
RemoveFromBlockStateList(blockIndex);
blockOperation.Update(BlockState, OldChildState);
for (i = blockIndex; i < BlockStateList.Count; i++)
{
IWriteableBlockState NextBlockState = (IWriteableBlockState)BlockStateList[i];
foreach (IWriteablePlaceholderNodeState State in NextBlockState.StateList)
{
IWriteableBrowsingExistingBlockNodeIndex NodeIndex = State.ParentIndex as IWriteableBrowsingExistingBlockNodeIndex;
Debug.Assert(NodeIndex != null);
Debug.Assert(NodeIndex.BlockIndex == i + 1);
NodeIndex.MoveBlockDown();
}
}
}
else
{
Debug.Assert(nodeOperation != null);
nodeOperation.Update(OldChildState);
}
i = index;
while (i < BlockState.StateList.Count)
{
IWriteablePlaceholderNodeState State = (IWriteablePlaceholderNodeState)BlockState.StateList[i];
IWriteableBrowsingExistingBlockNodeIndex NodeIndex = State.ParentIndex as IWriteableBrowsingExistingBlockNodeIndex;
Debug.Assert(NodeIndex != null);
Debug.Assert(NodeIndex.BlockIndex == blockIndex);
Debug.Assert(NodeIndex.Index == i + 1);
NodeIndex.MoveDown();
i++;
}
}