/// <summary>
/// Handler called every time a comment is changed in the controller.
/// </summary>
/// <param name="operation">Details of the operation performed.</param>
private protected virtual void OnCommentChanged(WriteableChangeCommentOperation operation)
{
IWriteableNodeState State = operation.State;
Debug.Assert(State != null);
Debug.Assert(StateViewTable.ContainsKey(State));
}
private protected virtual void UndoChangeComment(IWriteableOperation operation)
{
WriteableChangeCommentOperation ChangeCommentOperation = (WriteableChangeCommentOperation)operation;
ChangeCommentOperation = ChangeCommentOperation.ToInverseChange();
ExecuteChangeComment(ChangeCommentOperation);
}
/// <summary>
/// Changes the value of a text.
/// </summary>
/// <param name="nodeIndex">Index of the state with the comment to change.</param>
/// <param name="text">The new comment.</param>
public virtual void ChangeComment(IWriteableIndex nodeIndex, string text)
{
Contract.RequireNotNull(nodeIndex, out IWriteableIndex NodeIndex);
Debug.Assert(StateTable.ContainsKey(NodeIndex));
Contract.RequireNotNull(text, out string Text);
System.Action <IWriteableOperation> HandlerRedo = (IWriteableOperation operation) => RedoChangeComment(operation);
System.Action <IWriteableOperation> HandlerUndo = (IWriteableOperation operation) => UndoChangeComment(operation);
IWriteableNodeState State = (IWriteableNodeState)StateTable[NodeIndex];
WriteableChangeCommentOperation Operation = CreateChangeCommentOperation(State.Node, Text, HandlerRedo, HandlerUndo, isNested: false);
Operation.Redo();
SetLastOperation(Operation);
CheckInvariant();
}
private protected virtual void ExecuteChangeComment(WriteableChangeCommentOperation operation)
{
Node ParentNode = operation.ParentNode;
string NewText = operation.NewText;
IWriteableNodeState State = (IWriteableNodeState)GetState(ParentNode);
Debug.Assert(State != null);
string OldText = NodeTreeHelper.GetCommentText(State.Node);
Debug.Assert(OldText != null);
CommentHelper.Set(State.Node.Documentation, NewText);
operation.Update(State, OldText);
NotifyCommentChanged(operation);
}
private protected virtual void NotifyCommentChanged(WriteableChangeCommentOperation operation)
{
CommentChangedHandler?.Invoke(operation);
}
private protected virtual void RedoChangeComment(IWriteableOperation operation)
{
WriteableChangeCommentOperation ChangeCommentOperation = (WriteableChangeCommentOperation)operation;
ExecuteChangeComment(ChangeCommentOperation);
}
