private void CutOrDelete(IDataObject dataObject, out bool isDeleted)
{
isDeleted = false;
IFocusNodeState State = StateView.State;
IFocusListInner ParentInner = State.PropertyToInner(PropertyName) as IFocusListInner;
Debug.Assert(ParentInner != null);
int OldNodeCount = ParentInner.Count;
int SelectionCount = EndIndex - StartIndex;
if (SelectionCount < ParentInner.StateList.Count || !NodeHelper.IsCollectionNeverEmpty(State.Node, PropertyName))
{
if (dataObject != null)
{
List <Node> NodeList = new List <Node>();
for (int i = StartIndex; i < EndIndex; i++)
{
NodeList.Add(ParentInner.StateList[i].Node);
}
ClipboardHelper.WriteNodeList(dataObject, NodeList);
}
FocusController Controller = StateView.ControllerView.Controller;
Controller.RemoveNodeRange(ParentInner, -1, StartIndex, EndIndex);
Debug.Assert(ParentInner.Count == OldNodeCount - SelectionCount);
StateView.ControllerView.ClearSelection();
isDeleted = true;
}
}
/// <summary>
/// Replaces the selection with the content of the clipboard.
/// </summary>
/// <param name="isChanged">True if something was replaced or added.</param>
public override void Paste(out bool isChanged)
{
isChanged = false;
IFocusNodeState State = StateView.State;
IFocusBlockListInner ParentInner = State.PropertyToInner(PropertyName) as IFocusBlockListInner;
Debug.Assert(ParentInner != null);
Debug.Assert(BlockIndex >= 0 && BlockIndex < ParentInner.BlockStateList.Count);
IFocusBlockState BlockState = ParentInner.BlockStateList[BlockIndex];
Debug.Assert(StartIndex < BlockState.StateList.Count);
Debug.Assert(EndIndex <= BlockState.StateList.Count);
Debug.Assert(StartIndex <= EndIndex);
IList <INode> NodeList = null;
if (ClipboardHelper.TryReadNodeList(out NodeList))
{
}
else if (ClipboardHelper.TryReadNode(out INode Node))
{
NodeList = new List <INode>()
{
Node
};
}
if (NodeList != null)
{
if (NodeList.Count == 0 || ParentInner.InterfaceType.IsAssignableFrom(NodeList[0].GetType()))
{
List <IWriteableInsertionCollectionNodeIndex> IndexList = new List <IWriteableInsertionCollectionNodeIndex>();
IFocusController Controller = StateView.ControllerView.Controller;
int OldNodeCount = ParentInner.Count;
int SelectionCount = EndIndex - StartIndex;
int InsertionNodeIndex = EndIndex;
for (int i = 0; i < NodeList.Count; i++)
{
INode NewNode = NodeList[i] as INode;
IFocusInsertionExistingBlockNodeIndex InsertedIndex = CreateExistingBlockNodeIndex(ParentInner.Owner.Node, PropertyName, NewNode, BlockIndex, StartIndex + i);
IndexList.Add(InsertedIndex);
}
Controller.ReplaceNodeRange(ParentInner, BlockIndex, StartIndex, EndIndex, IndexList);
Debug.Assert(ParentInner.Count == OldNodeCount + NodeList.Count - SelectionCount);
StateView.ControllerView.ClearSelection();
isChanged = NodeList.Count > 0 || SelectionCount > 0;
}
}
}
/// <summary>
/// Copy the selection in the clipboard.
/// </summary>
/// <param name="dataObject">The clipboard data object that can already contain other custom formats.</param>
public override void Copy(IDataObject dataObject)
{
IFocusNodeState State = StateView.State;
IFocusListInner ParentInner = State.PropertyToInner(PropertyName) as IFocusListInner;
Debug.Assert(ParentInner != null);
List <Node> NodeList = new List <Node>();
for (int i = StartIndex; i < EndIndex; i++)
{
NodeList.Add(ParentInner.StateList[i].Node);
}
ClipboardHelper.WriteNodeList(dataObject, NodeList);
}
/// <summary>
/// Adds the selection to the clipboard.
/// </summary>
/// <param name="dataObject">The clipboard data object that can already contain other custom formats.</param>
public override void Copy(IDataObject dataObject)
{
IFocusNodeState State = StateView.State;
IFocusBlockListInner ParentInner = State.PropertyToInner(PropertyName) as IFocusBlockListInner;
Debug.Assert(ParentInner != null);
Debug.Assert(StartIndex <= EndIndex);
List <IBlock> BlockList = new List <IBlock>();
for (int i = StartIndex; i < EndIndex; i++)
{
IFocusBlockState BlockState = (IFocusBlockState)ParentInner.BlockStateList[i];
BlockList.Add(BlockState.ChildBlock);
}
ClipboardHelper.WriteBlockList(dataObject, BlockList);
}
private protected virtual void ExtendSelectionBlockList(IFocusBlockListSelection selection)
{
string PropertyName = selection.PropertyName;
IFocusNodeState State = selection.StateView.State;
IFocusBlockListInner BlockListInner = State.PropertyToInner(PropertyName) as IFocusBlockListInner;
Debug.Assert(BlockListInner != null);
Debug.Assert(selection.StartIndex <= selection.EndIndex);
int SelectedCount = selection.EndIndex - selection.StartIndex + 1;
if (SelectedCount < BlockListInner.BlockStateList.Count)
{
selection.Update(0, BlockListInner.BlockStateList.Count - 1);
}
else
{
SelectNode(selection.StateView.State);
}
}
/// <summary>
/// Replaces the selection with the content of the clipboard.
/// </summary>
/// <param name="isChanged">True if something was replaced or added.</param>
public override void Paste(out bool isChanged)
{
isChanged = false;
IFocusNodeState State = StateView.State;
IFocusBlockListInner ParentInner = State.PropertyToInner(PropertyName) as IFocusBlockListInner;
Debug.Assert(ParentInner != null);
Debug.Assert(StartIndex <= EndIndex);
int OldBlockCount = ParentInner.BlockStateList.Count;
int SelectionCount = EndIndex - StartIndex;
if (ClipboardHelper.TryReadBlockList(out IList <IBlock> BlockList))
{
bool IsAssignable = true;
if (BlockList.Count > 0)
{
NodeTreeHelperBlockList.GetBlockItemType(BlockList[0], out Type ChildItemType);
// IsAssignable = ParentInner.InterfaceType.IsAssignableFrom(ChildInterfaceType);
IsAssignable = ParentInner.InterfaceType.IsAssignableFrom(ChildItemType);
}
if (IsAssignable)
{
List <IWriteableInsertionBlockNodeIndex> IndexList = new List <IWriteableInsertionBlockNodeIndex>();
FocusController Controller = StateView.ControllerView.Controller;
int InsertionBlockIndex = StartIndex;
for (int i = 0; i < BlockList.Count; i++)
{
IBlock NewBlock = BlockList[i];
for (int j = 0; j < NewBlock.NodeList.Count; j++)
{
Node NewNode = NewBlock.NodeList[j] as Node;
IFocusInsertionBlockNodeIndex InsertedIndex;
if (j == 0)
{
InsertedIndex = CreateNewBlockNodeIndex(ParentInner.Owner.Node, PropertyName, NewNode, InsertionBlockIndex, NewBlock.ReplicationPattern, NewBlock.SourceIdentifier);
}
else
{
InsertedIndex = CreateExistingBlockNodeIndex(ParentInner.Owner.Node, PropertyName, NewNode, InsertionBlockIndex, j);
}
Debug.Assert(InsertedIndex != null);
IndexList.Add(InsertedIndex);
}
InsertionBlockIndex++;
}
Controller.ReplaceBlockRange(ParentInner, StartIndex, EndIndex, IndexList);
Debug.Assert(ParentInner.BlockStateList.Count == OldBlockCount + BlockList.Count - SelectionCount);
StateView.ControllerView.ClearSelection();
isChanged = BlockList.Count > 0 || SelectionCount > 0;
}
}
}