/// <summary>
/// Replaces a node.
/// </summary>
/// <param name="operation">Details of the operation performed.</param>
public virtual void Replace(IWriteableReplaceOperation operation)
{
int BlockIndex = operation.BlockIndex;
Debug.Assert(BlockIndex >= 0 && BlockIndex < BlockStateList.Count);
IWriteableBlockState BlockState = (IWriteableBlockState)BlockStateList[BlockIndex];
int Index = operation.Index;
Debug.Assert(Index >= 0 && Index < BlockState.StateList.Count);
IBlock ChildBlock = BlockState.ChildBlock;
Node ParentNode = Owner.Node;
IWriteableNodeState OldChildState = (IWriteableNodeState)BlockState.StateList[Index];
Node OldNode = OldChildState.Node;
IWriteableBrowsingBlockNodeIndex OldBrowsingIndex = (IWriteableBrowsingBlockNodeIndex)OldChildState.ParentIndex;
BlockState.Remove(OldBrowsingIndex, Index);
NodeTreeHelperBlockList.ReplaceInBlock(ChildBlock, Index, operation.NewNode);
IWriteableBrowsingExistingBlockNodeIndex NewBrowsingIndex = CreateBrowsingNodeIndex(operation.NewNode, BlockIndex, Index);
IWriteablePlaceholderNodeState NewChildState = (IWriteablePlaceholderNodeState)CreateNodeState(NewBrowsingIndex);
BlockState.Insert(NewBrowsingIndex, Index, NewChildState);
operation.Update(OldBrowsingIndex, NewBrowsingIndex, OldNode, NewChildState);
}
/// <summary>
/// Removes a node from a block.
/// </summary>
/// <param name="nodeIndex">Index of the node to remove.</param>
/// <param name="index">Position of the removed node in the block.</param>
public virtual void Remove(IWriteableBrowsingBlockNodeIndex nodeIndex, int index)
{
Debug.Assert(nodeIndex != null);
Debug.Assert(index >= 0 && index < StateList.Count);
RemoveState(index);
}
/// <summary>
/// Inserts a new node in a block.
/// </summary>
/// <param name="nodeIndex">Index of the node to insert.</param>
/// <param name="index">Position of the inserted node in the block.</param>
/// <param name="childState">Node state.</param>
public virtual void Insert(IWriteableBrowsingBlockNodeIndex nodeIndex, int index, IReadOnlyPlaceholderNodeState childState)
{
Debug.Assert(nodeIndex != null);
Debug.Assert(index >= 0 && index <= StateList.Count);
InsertState(index, childState);
}
/// <summary>
/// Inserts a new node in a block list.
/// </summary>
/// <param name="operation">Details of the operation performed.</param>
public virtual void Insert(IWriteableInsertNodeOperation operation)
{
Debug.Assert(operation != null);
int BlockIndex = operation.BlockIndex;
Debug.Assert(BlockIndex >= 0 && BlockIndex < BlockStateList.Count);
IWriteableBlockState BlockState = BlockStateList[BlockIndex];
int Index = operation.Index;
Debug.Assert(Index >= 0 && Index <= BlockState.StateList.Count);
INode ParentNode = Owner.Node;
IBlock ChildBlock = BlockState.ChildBlock;
INode Node = operation.Node;
NodeTreeHelperBlockList.InsertIntoBlock(ChildBlock, Index, Node);
IWriteableBrowsingBlockNodeIndex BrowsingBlockIndex = CreateBrowsingNodeIndex(Node, BlockIndex, Index);
IWriteablePlaceholderNodeState ChildState = (IWriteablePlaceholderNodeState)CreateNodeState(BrowsingBlockIndex);
BlockState.Insert(BrowsingBlockIndex, Index, ChildState);
operation.Update(BrowsingBlockIndex, ChildState);
while (++Index < BlockState.StateList.Count)
{
IWriteablePlaceholderNodeState State = BlockState.StateList[Index];
IWriteableBrowsingExistingBlockNodeIndex NodeIndex = State.ParentIndex as IWriteableBrowsingExistingBlockNodeIndex;
Debug.Assert(NodeIndex != null);
Debug.Assert(NodeIndex.BlockIndex == BrowsingBlockIndex.BlockIndex);
Debug.Assert(NodeIndex.Index == Index - 1);
NodeIndex.MoveUp();
}
}
void IList <IWriteableBrowsingBlockNodeIndex> .Insert(int index, IWriteableBrowsingBlockNodeIndex item)
{
Insert(index, (IFocusBrowsingBlockNodeIndex)item);
}
int IList <IWriteableBrowsingBlockNodeIndex> .IndexOf(IWriteableBrowsingBlockNodeIndex value)
{
return(IndexOf((IFocusBrowsingBlockNodeIndex)value));
}
bool ICollection <IWriteableBrowsingBlockNodeIndex> .Remove(IWriteableBrowsingBlockNodeIndex item)
{
return(Remove((IFocusBrowsingBlockNodeIndex)item));
}
bool ICollection <IWriteableBrowsingBlockNodeIndex> .Contains(IWriteableBrowsingBlockNodeIndex value)
{
return(Contains((IFocusBrowsingBlockNodeIndex)value));
}
void ICollection <IWriteableBrowsingBlockNodeIndex> .Add(IWriteableBrowsingBlockNodeIndex item)
{
Add((IFocusBrowsingBlockNodeIndex)item);
}
