private protected virtual void ExecuteMergeBlocks(WriteableMergeBlocksOperation operation)
{
Node ParentNode = operation.ParentNode;
string PropertyName = operation.PropertyName;
IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex> Inner = GetInner(ParentNode, PropertyName) as IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex>;
int BlockIndex = operation.BlockIndex;
IWriteableBlockState FirstBlockState = (IWriteableBlockState)Inner.BlockStateList[BlockIndex - 1];
IWriteableBlockState SecondBlockState = (IWriteableBlockState)Inner.BlockStateList[BlockIndex];
IReadOnlyBrowsingSourceIndex SourceIndex = FirstBlockState.SourceIndex;
RemoveState(SourceIndex);
Stats.PlaceholderNodeCount--;
IReadOnlyBrowsingPatternIndex PatternIndex = FirstBlockState.PatternIndex;
RemoveState(PatternIndex);
Stats.PlaceholderNodeCount--;
int OldNodeCount = FirstBlockState.StateList.Count + SecondBlockState.StateList.Count;
int FirstNodeIndex = FirstBlockState.StateList.Count;
Inner.MergeBlocks(operation);
Stats.BlockCount--;
IWriteableBlockState BlockState = (IWriteableBlockState)Inner.BlockStateList[BlockIndex - 1];
Debug.Assert(BlockState.StateList.Count == OldNodeCount);
Debug.Assert(FirstNodeIndex < BlockState.StateList.Count);
NotifyBlocksMerged(operation);
}
/// <summary>
/// Checks whether a block can be moved in a block list.
/// </summary>
/// <param name="inner">The inner where the block is.</param>
/// <param name="blockIndex">Index of the block that would be moved.</param>
/// <param name="direction">Direction of the move, relative to the current position of the item.</param>
public virtual bool IsBlockMoveable(IWriteableBlockListInner inner, int blockIndex, int direction)
{
Contract.RequireNotNull(inner, out IWriteableBlockListInner Inner);
Debug.Assert(blockIndex >= 0 && blockIndex < Inner.BlockStateList.Count);
return(blockIndex + direction >= 0 && blockIndex + direction < Inner.BlockStateList.Count);
}
/// <summary>
/// Reduces the block list.
/// </summary>
private protected virtual void ReduceBlockList(IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex> blockListInner, WriteableOperationList operationList, bool isNested)
{
if (!blockListInner.IsSingle)
{
return;
}
if (NodeHelper.IsCollectionNeverEmpty(blockListInner.Owner.Node, blockListInner.PropertyName))
{
return;
}
if (!NodeHelper.IsCollectionWithExpand(blockListInner.Owner.Node, blockListInner.PropertyName))
{
return;
}
Debug.Assert(blockListInner.BlockStateList.Count == 1);
Debug.Assert(blockListInner.BlockStateList[0].StateList.Count == 1);
IWriteableNodeState FirstState = (IWriteableNodeState)blockListInner.BlockStateList[0].StateList[0];
if (!NodeHelper.IsDefaultNode(FirstState.Node))
{
return;
}
Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoRemoveBlock(operation);
Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => UndoRemoveBlock(operation);
IWriteableRemoveBlockOperation Operation = CreateRemoveBlockOperation(blockListInner.Owner.Node, blockListInner.PropertyName, 0, HandlerRedo, HandlerUndo, isNested);
Operation.Redo();
operationList.Add(Operation);
}
private protected virtual void ExecuteSplitBlock(WriteableSplitBlockOperation operation)
{
Node ParentNode = operation.ParentNode;
string PropertyName = operation.PropertyName;
IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex> Inner = GetInner(ParentNode, PropertyName) as IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex>;
IWriteableBlockState OldBlockState = (IWriteableBlockState)Inner.BlockStateList[operation.BlockIndex];
Debug.Assert(operation.Index < OldBlockState.StateList.Count);
int OldNodeCount = OldBlockState.StateList.Count;
Inner.SplitBlock(operation);
Stats.BlockCount++;
IWriteableBlockState NewBlockState = operation.BlockState;
Debug.Assert(OldBlockState.StateList.Count + NewBlockState.StateList.Count == OldNodeCount);
Debug.Assert(NewBlockState.StateList.Count > 0);
IReadOnlyBrowsingPatternIndex PatternIndex = NewBlockState.PatternIndex;
IReadOnlyPatternState PatternState = NewBlockState.PatternState;
AddState(PatternIndex, PatternState);
Stats.PlaceholderNodeCount++;
IReadOnlyBrowsingSourceIndex SourceIndex = NewBlockState.SourceIndex;
IReadOnlySourceState SourceState = NewBlockState.SourceState;
AddState(SourceIndex, SourceState);
Stats.PlaceholderNodeCount++;
NotifyBlockSplit(operation);
}
/// <summary>
/// Expands the block list.
/// * Only expand block list of arguments
/// * Only expand if the list is empty. In that case, add a single default argument.
/// </summary>
private protected virtual void ExpandBlockList(IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex> blockListInner, WriteableOperationList operationList)
{
if (!blockListInner.IsEmpty)
{
return;
}
if (!NodeHelper.IsCollectionWithExpand(blockListInner.Owner.Node, blockListInner.PropertyName))
{
return;
}
Node NewItem = NodeHelper.CreateDefaultFromType(blockListInner.InterfaceType);
Pattern NewPattern = NodeHelper.CreateEmptyPattern();
Identifier NewSource = NodeHelper.CreateEmptyIdentifier();
IBlock NewBlock = NodeTreeHelperBlockList.CreateBlock(blockListInner.Owner.Node, blockListInner.PropertyName, ReplicationStatus.Normal, NewPattern, NewSource);
Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoExpandBlockList(operation);
Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => UndoExpandBlockList(operation);
WriteableExpandArgumentOperation Operation = CreateExpandArgumentOperation(blockListInner.Owner.Node, blockListInner.PropertyName, NewBlock, NewItem, HandlerRedo, HandlerUndo, isNested: false);
Operation.Redo();
operationList.Add(Operation);
}
/// <summary>
/// Checks whether a block can be split at the given index.
/// </summary>
/// <param name="inner">The inner where the block would be split.</param>
/// <param name="nodeIndex">Index of the last node to stay in the old block.</param>
public virtual bool IsSplittable(IWriteableBlockListInner inner, IWriteableBrowsingExistingBlockNodeIndex nodeIndex)
{
Contract.RequireNotNull(inner, out IWriteableBlockListInner Inner);
Contract.RequireNotNull(nodeIndex, out IWriteableBrowsingExistingBlockNodeIndex NodeIndex);
return(Inner.IsSplittable(NodeIndex));
}
/// <summary></summary>
public virtual void InsertNodeRange(IWriteableBlockListInner inner, int blockIndex, int insertedIndex, IList <IWriteableInsertionCollectionNodeIndex> indexList)
{
Contract.RequireNotNull(inner, out IWriteableBlockListInner Inner);
Debug.Assert(blockIndex >= 0 && blockIndex < Inner.BlockStateList.Count);
IWriteableBlockState BlockState = (IWriteableBlockState)Inner.BlockStateList[blockIndex];
Debug.Assert(insertedIndex >= 0 && insertedIndex <= BlockState.StateList.Count);
int BlockNodeIndex = insertedIndex;
foreach (IWriteableInsertionCollectionNodeIndex NodeIndex in indexList)
{
bool IsHandled = false;
if (NodeIndex is IWriteableInsertionExistingBlockNodeIndex AsExistingBlockNodeIndex)
{
Debug.Assert(AsExistingBlockNodeIndex.BlockIndex == blockIndex);
Debug.Assert(AsExistingBlockNodeIndex.Index == BlockNodeIndex);
BlockNodeIndex++;
IsHandled = true;
}
Debug.Assert(IsHandled);
}
int FinalNodeIndex = BlockNodeIndex;
Action <IWriteableOperation> HandlerRedoInsertNode = (IWriteableOperation operation) => RedoInsertNewNode(operation);
Action <IWriteableOperation> HandlerUndoInsertNode = (IWriteableOperation operation) => UndoInsertNewNode(operation);
WriteableOperationList OperationList = CreateOperationList();
foreach (IWriteableInsertionCollectionNodeIndex NodeIndex in indexList)
{
if (NodeIndex is IWriteableInsertionExistingBlockNodeIndex AsExistingBlockNodeIndex)
{
IndexToPositionAndNode(AsExistingBlockNodeIndex, out blockIndex, out int Index, out _, out Node Node);
WriteableInsertNodeOperation OperationInsertNode = CreateInsertNodeOperation(Inner.Owner.Node, Inner.PropertyName, blockIndex, Index, Node, HandlerRedoInsertNode, HandlerUndoInsertNode, isNested: true);
OperationList.Add(OperationInsertNode);
}
}
if (OperationList.Count > 0)
{
WriteableOperationReadOnlyList OperationReadOnlyList = OperationList.ToReadOnly();
Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoRefresh(operation);
Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => throw new NotImplementedException(); // Undo is not possible.
WriteableGenericRefreshOperation RefreshOperation = CreateGenericRefreshOperation(RootState, HandlerRedo, HandlerUndo, isNested: false);
WriteableOperationGroup OperationGroup = CreateOperationGroup(OperationReadOnlyList, RefreshOperation);
OperationGroup.Redo();
SetLastOperation(OperationGroup);
CheckInvariant();
}
}
private protected virtual void ExecuteChangeReplication(WriteableChangeBlockOperation operation)
{
Node ParentNode = operation.ParentNode;
string PropertyName = operation.PropertyName;
IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex> Inner = GetInner(ParentNode, PropertyName) as IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex>;
Inner.ChangeReplication(operation);
NotifyBlockStateChanged(operation);
}
private protected virtual void RemoveBlock(IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex> blockListInner, int blockIndex)
{
System.Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoRemoveBlock(operation);
System.Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => UndoRemoveBlock(operation);
IWriteableRemoveBlockOperation Operation = CreateRemoveBlockOperation(blockListInner.Owner.Node, blockListInner.PropertyName, blockIndex, HandlerRedo, HandlerUndo, isNested: false);
Operation.Redo();
SetLastOperation(Operation);
CheckInvariant();
}
/// <summary>
/// Moves a block around in a block list.
/// </summary>
/// <param name="inner">The inner where the block is moved.</param>
/// <param name="blockIndex">Index of the block to move.</param>
/// <param name="direction">The change in position, relative to the current block position.</param>
public virtual void MoveBlock(IWriteableBlockListInner inner, int blockIndex, int direction)
{
Contract.RequireNotNull(inner, out IWriteableBlockListInner Inner);
Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoMoveBlock(operation);
Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => UndoMoveBlock(operation);
WriteableMoveBlockOperation Operation = CreateMoveBlockOperation(Inner.Owner.Node, Inner.PropertyName, blockIndex, direction, HandlerRedo, HandlerUndo, isNested: false);
Operation.Redo();
SetLastOperation(Operation);
CheckInvariant();
}
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>
/// Changes the replication state of a block.
/// </summary>
/// <param name="inner">The inner where the blok is changed.</param>
/// <param name="blockIndex">Position of the block in the block list.</param>
/// <param name="replication">New replication value.</param>
public virtual void ChangeReplication(IWriteableBlockListInner inner, int blockIndex, ReplicationStatus replication)
{
Contract.RequireNotNull(inner, out IWriteableBlockListInner Inner);
Debug.Assert(blockIndex >= 0 && blockIndex < Inner.BlockStateList.Count);
System.Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoChangeReplication(operation);
System.Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => UndoChangeReplication(operation);
WriteableChangeBlockOperation Operation = CreateChangeBlockOperation(Inner.Owner.Node, Inner.PropertyName, blockIndex, replication, HandlerRedo, HandlerUndo, isNested: false);
Operation.Redo();
SetLastOperation(Operation);
CheckInvariant();
}
private protected virtual void InsertNewBlock(IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex> blockListInner, IWriteableInsertionNewBlockNodeIndex newBlockIndex, out IWriteableBrowsingCollectionNodeIndex nodeIndex)
{
IBlock NewBlock = NodeTreeHelperBlockList.CreateBlock(blockListInner.Owner.Node, blockListInner.PropertyName, ReplicationStatus.Normal, newBlockIndex.PatternNode, newBlockIndex.SourceNode);
Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoInsertNewBlock(operation);
Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => UndoInsertNewBlock(operation);
IWriteableInsertBlockOperation Operation = CreateInsertBlockOperation(blockListInner.Owner.Node, blockListInner.PropertyName, newBlockIndex.BlockIndex, NewBlock, newBlockIndex.Node, HandlerRedo, HandlerUndo, isNested: false);
Operation.Redo();
SetLastOperation(Operation);
CheckInvariant();
nodeIndex = Operation.BrowsingIndex;
}
/// <summary>
/// Merges two blocks at the given index.
/// </summary>
/// <param name="inner">The inner where blocks are merged.</param>
/// <param name="nodeIndex">Index of the first node in the block to merge.</param>
public virtual void MergeBlocks(IWriteableBlockListInner inner, IWriteableBrowsingExistingBlockNodeIndex nodeIndex)
{
Contract.RequireNotNull(inner, out IWriteableBlockListInner Inner);
Contract.RequireNotNull(nodeIndex, out IWriteableBrowsingExistingBlockNodeIndex NodeIndex);
Debug.Assert(Inner.IsMergeable(NodeIndex));
Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoMergeBlocks(operation);
Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => UndoMergeBlocks(operation);
WriteableMergeBlocksOperation Operation = CreateMergeBlocksOperation(Inner.Owner.Node, Inner.PropertyName, NodeIndex.BlockIndex, HandlerRedo, HandlerUndo, isNested: false);
Operation.Redo();
SetLastOperation(Operation);
CheckInvariant();
}
/// <summary></summary>
public virtual void RemoveNodeRange(IWriteableBlockListInner inner, int blockIndex, int firstNodeIndex, int lastNodeIndex)
{
Contract.RequireNotNull(inner, out IWriteableBlockListInner Inner);
Debug.Assert(blockIndex >= 0 && blockIndex < Inner.BlockStateList.Count);
IWriteableBlockState BlockState = (IWriteableBlockState)Inner.BlockStateList[blockIndex];
Debug.Assert(firstNodeIndex >= 0 && firstNodeIndex < BlockState.StateList.Count);
Debug.Assert(lastNodeIndex >= 0 && lastNodeIndex <= BlockState.StateList.Count);
Debug.Assert(firstNodeIndex <= lastNodeIndex);
int DeletedCount = lastNodeIndex - firstNodeIndex;
System.Action <IWriteableOperation> HandlerRedoRemoveNode = (IWriteableOperation operation) => RedoRemoveNode(operation);
System.Action <IWriteableOperation> HandlerUndoRemoveNode = (IWriteableOperation operation) => UndoRemoveNode(operation);
System.Action <IWriteableOperation> HandlerRedoRemoveBlock = (IWriteableOperation operation) => RedoRemoveBlock(operation);
System.Action <IWriteableOperation> HandlerUndoRemoveBlock = (IWriteableOperation operation) => UndoRemoveBlock(operation);
WriteableOperationList OperationList = CreateOperationList();
for (int i = firstNodeIndex; i < lastNodeIndex; i++)
{
IWriteableRemoveOperation Operation;
if (DeletedCount < BlockState.StateList.Count || i + 1 < lastNodeIndex)
{
Operation = CreateRemoveNodeOperation(Inner.Owner.Node, Inner.PropertyName, blockIndex, firstNodeIndex, HandlerRedoRemoveNode, HandlerUndoRemoveNode, isNested: true);
}
else
{
Operation = CreateRemoveBlockOperation(Inner.Owner.Node, Inner.PropertyName, blockIndex, HandlerRedoRemoveBlock, HandlerUndoRemoveBlock, isNested: true);
}
OperationList.Add(Operation);
}
if (OperationList.Count > 0)
{
WriteableOperationReadOnlyList OperationReadOnlyList = OperationList.ToReadOnly();
System.Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoRefresh(operation);
System.Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => throw new NotImplementedException(); // Undo is not possible.
WriteableGenericRefreshOperation RefreshOperation = CreateGenericRefreshOperation(RootState, HandlerRedo, HandlerUndo, isNested: false);
WriteableOperationGroup OperationGroup = CreateOperationGroup(OperationReadOnlyList, RefreshOperation);
OperationGroup.Redo();
SetLastOperation(OperationGroup);
CheckInvariant();
}
}
private protected virtual bool IsNodeRangeRemoveable(IWriteableBlockListInner inner, int blockIndex, int firstNodeIndex, int lastNodeIndex)
{
Contract.RequireNotNull(inner, out IWriteableBlockListInner Inner);
Debug.Assert(blockIndex >= 0 && blockIndex < Inner.BlockStateList.Count);
IWriteableBlockState BlockState = (IWriteableBlockState)Inner.BlockStateList[blockIndex];
Debug.Assert(firstNodeIndex >= 0 && firstNodeIndex < BlockState.StateList.Count);
Debug.Assert(lastNodeIndex >= 0 && lastNodeIndex <= BlockState.StateList.Count);
Debug.Assert(firstNodeIndex <= lastNodeIndex);
int DeletedCount = lastNodeIndex - firstNodeIndex;
return(Inner.BlockStateList.Count > 1 || BlockState.StateList.Count > DeletedCount);
}
/// <summary>
/// Removes a range of blocks from a block list.
/// </summary>
/// <param name="inner">The inner for the block list from which blocks are removed.</param>
/// <param name="firstBlockIndex">Index of the first block to remove.</param>
/// <param name="lastBlockIndex">Index following the last block to remove.</param>
public virtual void RemoveBlockRange(IWriteableBlockListInner inner, int firstBlockIndex, int lastBlockIndex)
{
Contract.RequireNotNull(inner, out IWriteableBlockListInner Inner);
Debug.Assert(firstBlockIndex >= 0 && firstBlockIndex < Inner.BlockStateList.Count);
Debug.Assert(lastBlockIndex >= 0 && lastBlockIndex <= Inner.BlockStateList.Count);
Debug.Assert(firstBlockIndex <= lastBlockIndex);
System.Action <IWriteableOperation> HandlerRedoNode = (IWriteableOperation operation) => RedoRemoveNode(operation);
System.Action <IWriteableOperation> HandlerUndoNode = (IWriteableOperation operation) => UndoRemoveNode(operation);
System.Action <IWriteableOperation> HandlerRedoBlock = (IWriteableOperation operation) => RedoRemoveBlock(operation);
System.Action <IWriteableOperation> HandlerUndoBlock = (IWriteableOperation operation) => UndoRemoveBlock(operation);
WriteableOperationList OperationList = CreateOperationList();
for (int i = firstBlockIndex; i < lastBlockIndex; i++)
{
IWriteableBlockState BlockState = (IWriteableBlockState)Inner.BlockStateList[i];
Debug.Assert(BlockState.StateList.Count >= 1);
// Remove at firstBlockIndex since subsequent blocks are moved as the block at firstBlockIndex is deleted.
// Same for nodes inside blokcks, delete them at 0.
for (int j = 1; j < BlockState.StateList.Count; j++)
{
WriteableRemoveNodeOperation OperationNode = CreateRemoveNodeOperation(Inner.Owner.Node, Inner.PropertyName, firstBlockIndex, 0, HandlerRedoNode, HandlerUndoNode, isNested: true);
OperationList.Add(OperationNode);
}
IWriteableRemoveBlockOperation OperationBlock = CreateRemoveBlockOperation(Inner.Owner.Node, Inner.PropertyName, firstBlockIndex, HandlerRedoBlock, HandlerUndoBlock, isNested: true);
OperationList.Add(OperationBlock);
}
if (OperationList.Count > 0)
{
WriteableOperationReadOnlyList OperationReadOnlyList = OperationList.ToReadOnly();
System.Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoRefresh(operation);
System.Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => throw new NotImplementedException(); // Undo is not possible.
WriteableGenericRefreshOperation RefreshOperation = CreateGenericRefreshOperation(RootState, HandlerRedo, HandlerUndo, isNested: false);
WriteableOperationGroup OperationGroup = CreateOperationGroup(OperationReadOnlyList, RefreshOperation);
OperationGroup.Redo();
SetLastOperation(OperationGroup);
CheckInvariant();
}
}
/// <summary>
/// Checks whether a range of blocks can be removed from a block list.
/// </summary>
/// <param name="inner">The inner with blocks to remove.</param>
/// <param name="firstBlockIndex">Index of the first block to remove.</param>
/// <param name="lastBlockIndex">Index following the last block to remove.</param>
public virtual bool IsBlockRangeRemoveable(IWriteableBlockListInner inner, int firstBlockIndex, int lastBlockIndex)
{
Contract.RequireNotNull(inner, out IWriteableBlockListInner Inner);
Debug.Assert(firstBlockIndex >= 0 && firstBlockIndex < Inner.BlockStateList.Count);
Debug.Assert(lastBlockIndex >= 0 && lastBlockIndex <= Inner.BlockStateList.Count);
Debug.Assert(firstBlockIndex <= lastBlockIndex);
int DeletedCount = lastBlockIndex - firstBlockIndex;
if (Inner.BlockStateList.Count > DeletedCount)
{
return(true);
}
Debug.Assert(Inner.BlockStateList.Count == DeletedCount);
Debug.Assert(Inner.Owner != null);
Node Node = Inner.Owner.Node;
string PropertyName = Inner.PropertyName;
Debug.Assert(Node != null);
bool Result = true;
//Type InterfaceType = NodeTreeHelper.NodeTypeToInterfaceType(inner.Owner.Node.GetType());
Type InterfaceType = Type.FromGetType(Inner.Owner.Node);
IReadOnlyDictionary <Type, string[]> NeverEmptyCollectionTable = NodeHelper.NeverEmptyCollectionTable;
if (NeverEmptyCollectionTable.ContainsKey(InterfaceType))
{
foreach (string Item in NeverEmptyCollectionTable[InterfaceType])
{
if (Item == PropertyName)
{
Result = false;
}
}
}
return(Result);
}
/// <summary>
/// Splits a block in two at the given index.
/// </summary>
/// <param name="inner">The inner where the block is split.</param>
/// <param name="nodeIndex">Index of the last node to stay in the old block.</param>
public virtual void SplitBlock(IWriteableBlockListInner inner, IWriteableBrowsingExistingBlockNodeIndex nodeIndex)
{
Contract.RequireNotNull(inner, out IWriteableBlockListInner Inner);
Contract.RequireNotNull(nodeIndex, out IWriteableBrowsingExistingBlockNodeIndex NodeIndex);
Debug.Assert(Inner.IsSplittable(NodeIndex));
IWriteableBlockState BlockState = (IWriteableBlockState)Inner.BlockStateList[NodeIndex.BlockIndex];
ReplicationStatus Replication = BlockState.ChildBlock.Replication;
Pattern NewPatternNode = NodeHelper.CreateSimplePattern(BlockState.ChildBlock.ReplicationPattern.Text);
Identifier NewSourceNode = NodeHelper.CreateSimpleIdentifier(BlockState.ChildBlock.SourceIdentifier.Text);
IBlock NewBlock = NodeTreeHelperBlockList.CreateBlock(Inner.Owner.Node, Inner.PropertyName, Replication, NewPatternNode, NewSourceNode);
Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoSplitBlock(operation);
Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => UndoSplitBlock(operation);
WriteableSplitBlockOperation Operation = CreateSplitBlockOperation(Inner.Owner.Node, Inner.PropertyName, NodeIndex.BlockIndex, NodeIndex.Index, NewBlock, HandlerRedo, HandlerUndo, isNested: false);
Operation.Redo();
SetLastOperation(Operation);
CheckInvariant();
}
private protected virtual void ExecuteMoveBlock(WriteableMoveBlockOperation operation)
{
Node ParentNode = operation.ParentNode;
string PropertyName = operation.PropertyName;
IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex> Inner = GetInner(ParentNode, PropertyName) as IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex>;
IWriteableBlockState BlockState = (IWriteableBlockState)Inner.BlockStateList[operation.BlockIndex];
Debug.Assert(BlockState != null);
Debug.Assert(BlockState.StateList.Count > 0);
IWriteableNodeState State = (IWriteableNodeState)BlockState.StateList[0];
Debug.Assert(State != null);
IWriteableBrowsingExistingBlockNodeIndex NodeIndex = State.ParentIndex as IWriteableBrowsingExistingBlockNodeIndex;
Debug.Assert(NodeIndex != null);
Inner.MoveBlock(operation);
NotifyBlockStateMoved(operation);
}
private protected virtual void ExecuteRemoveBlock(IWriteableRemoveBlockOperation operation)
{
Node ParentNode = operation.ParentNode;
string PropertyName = operation.PropertyName;
IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex> Inner = GetInner(ParentNode, PropertyName) as IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex>;
Inner.RemoveWithBlock(operation);
IWriteableBlockState RemovedBlockState = operation.BlockState;
Debug.Assert(RemovedBlockState != null);
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));
Stats.BlockCount--;
RemoveState(PatternIndex);
Stats.PlaceholderNodeCount--;
RemoveState(SourceIndex);
Stats.PlaceholderNodeCount--;
IWriteableNodeState RemovedState = operation.RemovedState;
Debug.Assert(RemovedState != null);
PruneState(RemovedState);
Stats.PlaceholderNodeCount--;
NotifyBlockStateRemoved(operation);
}
private protected virtual void ExecuteInsertNewBlock(IWriteableInsertBlockOperation operation)
{
Node ParentNode = operation.ParentNode;
string PropertyName = operation.PropertyName;
IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex> Inner = GetInner(ParentNode, PropertyName) as IWriteableBlockListInner <IWriteableBrowsingBlockNodeIndex>;
Inner.InsertNewBlock(operation);
IWriteableBrowsingExistingBlockNodeIndex BrowsingIndex = operation.BrowsingIndex;
IWriteableBlockState BlockState = operation.BlockState;
IWriteablePlaceholderNodeState ChildState = operation.ChildState;
Debug.Assert(BlockState.StateList.Count == 1);
Debug.Assert(BlockState.StateList[0] == ChildState);
((IWriteableBlockState <IWriteableInner <IWriteableBrowsingChildIndex> >)BlockState).InitBlockState();
Stats.BlockCount++;
IWriteableBrowsingPatternIndex PatternIndex = BlockState.PatternIndex;
IWriteablePatternState PatternState = BlockState.PatternState;
AddState(PatternIndex, PatternState);
Stats.PlaceholderNodeCount++;
IWriteableBrowsingSourceIndex SourceIndex = BlockState.SourceIndex;
IWriteableSourceState SourceState = BlockState.SourceState;
AddState(SourceIndex, SourceState);
Stats.PlaceholderNodeCount++;
AddState(BrowsingIndex, ChildState);
Stats.PlaceholderNodeCount++;
BuildStateTable(Inner, null, BrowsingIndex, ChildState);
Debug.Assert(Contains(BrowsingIndex));
NotifyBlockStateInserted(operation);
}
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);
}
/// <summary>
/// Inserts a range of blocks in a block list.
/// </summary>
/// <param name="inner">The inner for the block list in which blocks are inserted.</param>
/// <param name="insertedIndex">Index where to insert the first block.</param>
/// <param name="indexList">List of nodes in blocks to insert.</param>
public virtual void InsertBlockRange(IWriteableBlockListInner inner, int insertedIndex, IList <IWriteableInsertionBlockNodeIndex> indexList)
{
Contract.RequireNotNull(inner, out IWriteableBlockListInner Inner);
Debug.Assert(insertedIndex >= 0 && insertedIndex <= Inner.BlockStateList.Count);
Contract.RequireNotNull(indexList, out IList <IWriteableInsertionBlockNodeIndex> IndexList);
int BlockIndex = insertedIndex - 1;
int BlockNodeIndex = 0;
foreach (IWriteableInsertionBlockNodeIndex NodeIndex in IndexList)
{
bool IsHandled = false;
if (NodeIndex is IWriteableInsertionNewBlockNodeIndex AsNewBlockNodeIndex)
{
BlockIndex++;
BlockNodeIndex = 0;
Debug.Assert(AsNewBlockNodeIndex.BlockIndex == BlockIndex);
IsHandled = true;
}
else if (NodeIndex is IWriteableInsertionExistingBlockNodeIndex AsExistingBlockNodeIndex)
{
BlockNodeIndex++;
Debug.Assert(AsExistingBlockNodeIndex.BlockIndex == BlockIndex);
Debug.Assert(AsExistingBlockNodeIndex.Index == BlockNodeIndex);
IsHandled = true;
}
Debug.Assert(IsHandled);
}
int FinalBlockIndex = BlockIndex + 1;
Action <IWriteableOperation> HandlerRedoInsertNode = (IWriteableOperation operation) => RedoInsertNewNode(operation);
Action <IWriteableOperation> HandlerUndoInsertNode = (IWriteableOperation operation) => UndoInsertNewNode(operation);
Action <IWriteableOperation> HandlerRedoInsertBlock = (IWriteableOperation operation) => RedoInsertNewBlock(operation);
Action <IWriteableOperation> HandlerUndoInsertBlock = (IWriteableOperation operation) => UndoInsertNewBlock(operation);
WriteableOperationList OperationList = CreateOperationList();
foreach (IWriteableInsertionBlockNodeIndex NodeIndex in IndexList)
{
if (NodeIndex is IWriteableInsertionNewBlockNodeIndex AsNewBlockNodeIndex)
{
IBlock NewBlock = NodeTreeHelperBlockList.CreateBlock(Inner.Owner.Node, Inner.PropertyName, ReplicationStatus.Normal, AsNewBlockNodeIndex.PatternNode, AsNewBlockNodeIndex.SourceNode);
IWriteableInsertBlockOperation OperationInsertBlock = CreateInsertBlockOperation(Inner.Owner.Node, Inner.PropertyName, AsNewBlockNodeIndex.BlockIndex, NewBlock, AsNewBlockNodeIndex.Node, HandlerRedoInsertBlock, HandlerUndoInsertBlock, isNested: true);
OperationList.Add(OperationInsertBlock);
}
else if (NodeIndex is IWriteableInsertionExistingBlockNodeIndex AsExistingBlockNodeIndex)
{
IndexToPositionAndNode(AsExistingBlockNodeIndex, out BlockIndex, out int Index, out _, out Node Node);
WriteableInsertNodeOperation OperationInsertNode = CreateInsertNodeOperation(Inner.Owner.Node, Inner.PropertyName, BlockIndex, Index, Node, HandlerRedoInsertNode, HandlerUndoInsertNode, isNested: true);
OperationList.Add(OperationInsertNode);
}
}
Debug.Assert(BlockIndex + 1 == FinalBlockIndex);
if (OperationList.Count > 0)
{
WriteableOperationReadOnlyList OperationReadOnlyList = OperationList.ToReadOnly();
Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoRefresh(operation);
Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => throw new NotImplementedException(); // Undo is not possible.
WriteableGenericRefreshOperation RefreshOperation = CreateGenericRefreshOperation(RootState, HandlerRedo, HandlerUndo, isNested: false);
WriteableOperationGroup OperationGroup = CreateOperationGroup(OperationReadOnlyList, RefreshOperation);
OperationGroup.Redo();
SetLastOperation(OperationGroup);
CheckInvariant();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="WriteableBlockState{IInner}"/> class.
/// </summary>
/// <param name="parentInner">Inner containing the block state.</param>
/// <param name="newBlockIndex">Index that was used to create the block state.</param>
/// <param name="childBlock">The block.</param>
public WriteableBlockState(IWriteableBlockListInner parentInner, IWriteableBrowsingNewBlockNodeIndex newBlockIndex, IBlock childBlock)
: base(parentInner, newBlockIndex, childBlock)
{
}
/// <summary>
/// Removes a range of blocks from a block list and replace them with other blocks.
/// </summary>
/// <param name="inner">The inner for the block list from which blocks are replaced.</param>
/// <param name="firstBlockIndex">Index of the first block to remove.</param>
/// <param name="lastBlockIndex">Index following the last block to remove.</param>
/// <param name="indexList">List of nodes in blocks to insert.</param>
public virtual void ReplaceBlockRange(IWriteableBlockListInner inner, int firstBlockIndex, int lastBlockIndex, IList <IWriteableInsertionBlockNodeIndex> indexList)
{
Contract.RequireNotNull(inner, out IWriteableBlockListInner Inner);
Debug.Assert(firstBlockIndex >= 0 && firstBlockIndex < Inner.BlockStateList.Count);
Debug.Assert(lastBlockIndex >= 0 && lastBlockIndex <= Inner.BlockStateList.Count);
Debug.Assert(firstBlockIndex <= lastBlockIndex);
Contract.RequireNotNull(indexList, out IList <IWriteableInsertionBlockNodeIndex> IndexList);
int BlockIndex = firstBlockIndex - 1;
int BlockNodeIndex = 0;
foreach (IWriteableInsertionBlockNodeIndex NodeIndex in IndexList)
{
bool IsHandled = false;
if (NodeIndex is IWriteableInsertionNewBlockNodeIndex AsNewBlockNodeIndex)
{
BlockIndex++;
BlockNodeIndex = 0;
Debug.Assert(AsNewBlockNodeIndex.BlockIndex == BlockIndex);
IsHandled = true;
}
else if (NodeIndex is IWriteableInsertionExistingBlockNodeIndex AsExistingBlockNodeIndex)
{
BlockNodeIndex++;
Debug.Assert(AsExistingBlockNodeIndex.BlockIndex == BlockIndex);
Debug.Assert(AsExistingBlockNodeIndex.Index == BlockNodeIndex);
IsHandled = true;
}
Debug.Assert(IsHandled);
}
int FinalBlockIndex = BlockIndex + 1;
Action <IWriteableOperation> HandlerRedoInsertNode = (IWriteableOperation operation) => RedoInsertNewNode(operation);
Action <IWriteableOperation> HandlerUndoInsertNode = (IWriteableOperation operation) => UndoInsertNewNode(operation);
Action <IWriteableOperation> HandlerRedoInsertBlock = (IWriteableOperation operation) => RedoInsertNewBlock(operation);
Action <IWriteableOperation> HandlerUndoInsertBlock = (IWriteableOperation operation) => UndoInsertNewBlock(operation);
Action <IWriteableOperation> HandlerRedoRemoveNode = (IWriteableOperation operation) => RedoRemoveNode(operation);
Action <IWriteableOperation> HandlerUndoRemoveNode = (IWriteableOperation operation) => UndoRemoveNode(operation);
Action <IWriteableOperation> HandlerRedoRemoveBlock = (IWriteableOperation operation) => RedoRemoveBlock(operation);
Action <IWriteableOperation> HandlerUndoRemoveBlock = (IWriteableOperation operation) => UndoRemoveBlock(operation);
WriteableOperationList OperationList = CreateOperationList();
// Insert first to prevent empty block lists.
foreach (IWriteableInsertionBlockNodeIndex NodeIndex in IndexList)
{
if (NodeIndex is IWriteableInsertionNewBlockNodeIndex AsNewBlockNodeIndex)
{
IBlock NewBlock = NodeTreeHelperBlockList.CreateBlock(Inner.Owner.Node, Inner.PropertyName, ReplicationStatus.Normal, AsNewBlockNodeIndex.PatternNode, AsNewBlockNodeIndex.SourceNode);
IWriteableInsertBlockOperation OperationInsertBlock = CreateInsertBlockOperation(Inner.Owner.Node, Inner.PropertyName, AsNewBlockNodeIndex.BlockIndex, NewBlock, AsNewBlockNodeIndex.Node, HandlerRedoInsertBlock, HandlerUndoInsertBlock, isNested: true);
OperationList.Add(OperationInsertBlock);
}
else if (NodeIndex is IWriteableInsertionExistingBlockNodeIndex AsExistingBlockNodeIndex)
{
IndexToPositionAndNode(AsExistingBlockNodeIndex, out BlockIndex, out int Index, out _, out Node Node);
WriteableInsertNodeOperation OperationInsertNode = CreateInsertNodeOperation(Inner.Owner.Node, Inner.PropertyName, BlockIndex, Index, Node, HandlerRedoInsertNode, HandlerUndoInsertNode, isNested: true);
OperationList.Add(OperationInsertNode);
}
}
Debug.Assert(BlockIndex + 1 == FinalBlockIndex);
for (int i = FinalBlockIndex; i < FinalBlockIndex + lastBlockIndex - firstBlockIndex; i++)
{
IWriteableBlockState BlockState = (IWriteableBlockState)Inner.BlockStateList[i + firstBlockIndex - FinalBlockIndex];
Debug.Assert(BlockState.StateList.Count >= 1);
// Remove at FinalBlockIndex since subsequent blocks are moved as the block at FinalBlockIndex is deleted.
// Same for nodes inside blokcks, delete them at 0.
for (int j = 1; j < BlockState.StateList.Count; j++)
{
WriteableRemoveNodeOperation OperationNode = CreateRemoveNodeOperation(Inner.Owner.Node, Inner.PropertyName, FinalBlockIndex, 0, HandlerRedoRemoveNode, HandlerUndoRemoveNode, isNested: true);
OperationList.Add(OperationNode);
}
IWriteableRemoveBlockOperation OperationBlock = CreateRemoveBlockOperation(Inner.Owner.Node, Inner.PropertyName, FinalBlockIndex, HandlerRedoRemoveBlock, HandlerUndoRemoveBlock, isNested: true);
OperationList.Add(OperationBlock);
}
if (OperationList.Count > 0)
{
WriteableOperationReadOnlyList OperationReadOnlyList = OperationList.ToReadOnly();
Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoRefresh(operation);
Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => throw new NotImplementedException(); // Undo is not possible.
WriteableGenericRefreshOperation RefreshOperation = CreateGenericRefreshOperation(RootState, HandlerRedo, HandlerUndo, isNested: false);
WriteableOperationGroup OperationGroup = CreateOperationGroup(OperationReadOnlyList, RefreshOperation);
OperationGroup.Redo();
SetLastOperation(OperationGroup);
CheckInvariant();
}
}