public bool Remove(IEnumerable <ConversationNode> nodes, IEnumerable <NodeGroup> groups, ILocalizationEngine localization)
{
nodes = nodes.ToList();
groups = groups.ToList();
bool removeNodes = nodes.Any();
bool removeGroups = groups.Any();
List <Action> undoActions = new List <Action>();
List <Action> redoActions = new List <Action>();
if (nodes.Any(n => !CanRemoveFromData(n, () => false)))
{
if (!PromptNodeDeletion())
{
return(false);
}
}
if (removeNodes)
{
//Make sure all the nodes are added before trying to link them
foreach (var node in nodes)
{
var n = node;
undoActions.Add(() => { m_nodes.Add(n); });
}
foreach (var node in nodes)
{
var n = node;
var actions = n.GetNodeRemoveActions();
//Ensure that the localization engine is up to date in terms of usage of localized data
foreach (var parameter in n.Data.Parameters.OfType <ILocalizedStringParameter>())
{
SimpleUndoPair clearLocalization = localization.ClearLocalizationAction(Id <LocalizedStringType> .ConvertFrom(parameter.TypeId), parameter.Value);
undoActions.Add(clearLocalization.Undo);
redoActions.Add(clearLocalization.Redo);
}
var containingGroups = m_groups.Where(g => g.Contents.Contains(n.Data.NodeId)).Evaluate();
undoActions.Add(() =>
{
actions.Undo(); //Connect after adding the node
foreach (var group in containingGroups)
{
group.Contents.Add(n.Data.NodeId);
}
m_audioProvider.UpdateUsage(n);
});
redoActions.Add(() =>
{
actions.Redo(); //Disconnect before removing the node
m_nodes.Remove(n);
foreach (var group in containingGroups)
{
group.Contents.Remove(n.Data.NodeId);
}
NodesDeleted.Execute();
});
}
}
if (removeGroups)
{
List <NodeGroup> toAdd = new List <NodeGroup>(groups);
undoActions.Add(() =>
{
m_groups.AddRange(toAdd);
});
redoActions.Add(() =>
{
m_groups.RemoveRange(toAdd);
});
}
Action undo = () => { using (m_audioProvider.SuppressUpdates()) foreach (Action action in undoActions)
{
action();
}
};
Action redo = () => { using (m_audioProvider.SuppressUpdates()) foreach (Action action in redoActions)
{
action();
}
};
string message;
if (removeNodes && removeGroups)
{
message = "Deleted elements";
}
else if (removeNodes)
{
message = "Deleted nodes";
}
else if (removeGroups)
{
message = "Removed groupings";
}
else
{
throw new InternalLogicException("Something went wrong :(");
}
UndoableFile.Change(new GenericUndoAction(undo, redo, message));
return(true);
}
