private protected virtual void PruneBlockListInner(IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex> inner)
{
for (int BlockIndex = inner.BlockStateList.Count; BlockIndex > 0; BlockIndex--)
{
Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoRemoveBlockView(operation);
Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => throw new NotImplementedException(); // Undo is not possible.
WriteableRemoveBlockViewOperation Operation = CreateRemoveBlockViewOperation(inner.Owner.Node, inner.PropertyName, BlockIndex - 1, HandlerRedo, HandlerUndo, isNested: true);
Operation.Redo();
}
Stats.BlockListCount--;
}
/// <summary>
/// Handler called every time a block view must be removed from the controller view.
/// </summary>
/// <param name="operation">Details of the operation performed.</param>
private protected virtual void OnBlockViewRemoved(WriteableRemoveBlockViewOperation operation)
{
IWriteableBlockState BlockState = operation.BlockState;
Debug.Assert(BlockState != null);
Debug.Assert(!BlockStateViewTable.ContainsKey(BlockState));
Debug.Assert(!StateViewTable.ContainsKey(BlockState.PatternState));
Debug.Assert(!StateViewTable.ContainsKey(BlockState.SourceState));
foreach (IWriteableNodeState State in BlockState.StateList)
{
Debug.Assert(!StateViewTable.ContainsKey(State));
}
}
private protected virtual void ExecuteRemoveBlockView(WriteableRemoveBlockViewOperation operation)
{
Node ParentNode = operation.ParentNode;
string PropertyName = operation.PropertyName;
IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex> Inner = GetInner(ParentNode, PropertyName) as IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex>;
IWriteableBlockState RemovedBlockState = (IWriteableBlockState)Inner.BlockStateList[operation.BlockIndex];
for (int Index = 0; Index < RemovedBlockState.StateList.Count; Index++)
{
IWriteableNodeState State = (IWriteableNodeState)RemovedBlockState.StateList[Index];
PruneState(State);
Stats.PlaceholderNodeCount--;
}
IWriteableBrowsingPatternIndex PatternIndex = RemovedBlockState.PatternIndex;
IWriteableBrowsingSourceIndex SourceIndex = RemovedBlockState.SourceIndex;
Debug.Assert(PatternIndex != null);
Debug.Assert(StateTable.ContainsKey(PatternIndex));
Debug.Assert(SourceIndex != null);
Debug.Assert(StateTable.ContainsKey(SourceIndex));
RemoveState(PatternIndex);
Stats.PlaceholderNodeCount--;
RemoveState(SourceIndex);
Stats.PlaceholderNodeCount--;
Inner.NotifyBlockStateRemoved(RemovedBlockState);
Stats.BlockCount--;
operation.Update(RemovedBlockState);
NotifyBlockViewRemoved(operation);
}
private protected virtual void NotifyBlockViewRemoved(WriteableRemoveBlockViewOperation operation)
{
BlockViewRemovedHandler?.Invoke(operation);
}
private protected virtual void RedoRemoveBlockView(IWriteableOperation operation)
{
WriteableRemoveBlockViewOperation RemoveBlockViewOperation = (WriteableRemoveBlockViewOperation)operation;
ExecuteRemoveBlockView(RemoveBlockViewOperation);
}