/// <summary>
/// Moves a block around in a block list.
/// </summary>
/// <param name="operation">Details of the operation performed.</param>
public virtual void MoveBlock(IWriteableMoveBlockOperation operation)
{
int BlockIndex = operation.BlockIndex;
int Direction = operation.Direction;
Debug.Assert(BlockIndex >= 0 && BlockIndex < BlockStateList.Count);
Debug.Assert(BlockIndex + Direction >= 0 && BlockIndex + Direction < BlockStateList.Count);
int MoveIndex = BlockIndex;
IWriteableBlockState BlockState = BlockStateList[MoveIndex];
MoveInBlockStateList(MoveIndex, Direction);
NodeTreeHelperBlockList.MoveBlock(Owner.Node, PropertyName, MoveIndex, Direction);
if (Direction > 0)
{
for (int i = MoveIndex; i < MoveIndex + Direction; i++)
{
for (int j = 0; j < BlockStateList[i].StateList.Count; j++)
{
IWriteableBrowsingExistingBlockNodeIndex ChildNodeIndex = BlockStateList[i].StateList[j].ParentIndex as IWriteableBrowsingExistingBlockNodeIndex;
Debug.Assert(ChildNodeIndex != null);
ChildNodeIndex.MoveBlockDown();
}
for (int j = 0; j < BlockState.StateList.Count; j++)
{
IWriteableBrowsingExistingBlockNodeIndex ChildNodeIndex = BlockState.StateList[j].ParentIndex as IWriteableBrowsingExistingBlockNodeIndex;
Debug.Assert(ChildNodeIndex != null);
ChildNodeIndex.MoveBlockUp();
}
}
}
else if (Direction < 0)
{
for (int i = MoveIndex; i > MoveIndex + Direction; i--)
{
for (int j = 0; j < BlockStateList[i].StateList.Count; j++)
{
IWriteableBrowsingExistingBlockNodeIndex ChildNodeIndex = BlockStateList[i].StateList[j].ParentIndex as IWriteableBrowsingExistingBlockNodeIndex;
Debug.Assert(ChildNodeIndex != null);
ChildNodeIndex.MoveBlockUp();
}
for (int j = 0; j < BlockState.StateList.Count; j++)
{
IWriteableBrowsingExistingBlockNodeIndex ChildNodeIndex = BlockState.StateList[j].ParentIndex as IWriteableBrowsingExistingBlockNodeIndex;
Debug.Assert(ChildNodeIndex != null);
ChildNodeIndex.MoveBlockDown();
}
}
}
operation.Update(BlockState);
}
/// <summary>
/// Handler called every time a block state is moved in the controller.
/// </summary>
/// <param name="operation">Details of the operation performed.</param>
private protected virtual void OnBlockStateMoved(IWriteableMoveBlockOperation operation)
{
Debug.Assert(operation != null);
Debug.Assert(!operation.IsNested);
IWriteableBlockState BlockState = operation.BlockState;
Debug.Assert(BlockState != null);
Debug.Assert(BlockStateViewTable.ContainsKey(BlockState));
}
