private bool RemoveAnonymousItem(Queue <string> nameParts, U item, bool failQuiet)
{
if (nameParts.Count == 0)
{
var removed = AnonymousItems.Remove(item);
if (OnItemRemoved != null)
{
OnItemRemoved(null, item);
}
return(removed);
}
else
{
var first = nameParts.Dequeue();
if (!Subnodes.ContainsKey(first))
{
if (failQuiet)
{
return(false);
}
throw new UriTreeException(
String.Format(
"Could not remove item '{0}' from group with full name '{1}'; " +
"missing intermediate node with name '{2}'.",
item, FullName, first
)
);
}
return(Subnodes[first].RemoveAnonymousItem(nameParts, item, failQuiet));
}
}
private void RemoveItem(Queue <string> nameParts, bool failQuiet)
{
var first = nameParts.Dequeue();
if (nameParts.Count == 0)
{
if (!Items.ContainsKey(first))
{
if (failQuiet)
{
return;
}
throw CouldNotRemoveItem(nameParts);
}
var item = Items[first];
Items.Remove(first);
if (OnItemRemoved != null)
{
OnItemRemoved(first, item);
}
}
else
{
if (!Subnodes.ContainsKey(first))
{
if (failQuiet)
{
return;
}
throw CouldNotRemoveItem(nameParts);
}
Subnodes[first].RemoveItem(nameParts, failQuiet);
}
}
private void AddAnonymousItem(Queue <string> nameParts, U item)
{
if (nameParts.Count == 0)
{
AnonymousItems.Add(item);
if (OnItemAdded != null)
{
OnItemAdded(null, item);
}
}
else
{
var first = nameParts.Dequeue();
if (!Subnodes.ContainsKey(first))
{
throw new UriTreeException(
String.Format(
"Could not add item '{0}' to group with full name '{1}'; " +
"missing intermediate node with name '{2}'. Consider using InsertItem instead.",
item, FullName, first
)
);
}
Subnodes[first].AddAnonymousItem(nameParts, item);
}
}
internal U GetItem(Queue <string> nameParts, bool useDefault, U defaultVal)
{
var first = nameParts.Dequeue();
if (nameParts.Count > 0 && !Subnodes.ContainsKey(first))
{
if (useDefault)
{
return(defaultVal);
}
throw CouldNotRetrieveItem(first);
}
else if (nameParts.Count == 0)
{
if (!Items.ContainsKey(first))
{
if (useDefault)
{
return(defaultVal);
}
throw CouldNotRetrieveItem(first);
}
return(Items[first]);
}
return(Subnodes[first].GetItem(nameParts, useDefault, defaultVal));
}
private void AddItem(Queue <string> nameParts, U item, bool disallowDuplicates)
{
var first = nameParts.Dequeue();
if (nameParts.Count == 0)
{
if (Items.ContainsKey(first))
{
if (disallowDuplicates)
{
throw new UriTreeException(
String.Format(
"Could not add item '{0}' with name '{1}' to group with full name '{2}', " +
"an item with that name already exists.", item, first, FullName
)
);
}
Items[first] = item;
}
else
{
Items.Add(first, item);
}
if (OnItemAdded != null)
{
OnItemAdded(first, item);
}
}
else
{
if (!Subnodes.ContainsKey(first))
{
throw new UriTreeException(
String.Format(
"Could not add item '{0}' with name '{1}' to group with full name '{2}; " +
"missing intermediate node with name '{3}'. Consider using InsertItem instead.",
item, nameParts, FullName, first
)
);
}
Subnodes[first].AddItem(nameParts, item, disallowDuplicates);
}
}
private void InsertAnonymousItem <NodeType>(Queue <string> nameParts, U item)
where NodeType : UriTreeMutableGroup <T, U>
{
if (nameParts.Count == 0)
{
AnonymousItems.Add(item);
if (OnItemAdded != null)
{
OnItemAdded(null, item);
}
}
else
{
var first = nameParts.Dequeue();
if (!Subnodes.ContainsKey(first))
{
var newNode = (T)Activator.CreateInstance(typeof(NodeType), first);
newNode.SetParent((T)this);
}
Subnodes[first].InsertAnonymousItem <NodeType>(nameParts, item);
}
}
private void InsertItem <NodeType>(Queue <string> nameParts, U item, bool disallowDuplicates)
where NodeType : UriTreeMutableGroup <T, U>
{
var first = nameParts.Dequeue();
if (nameParts.Count == 1)
{
if (Items.ContainsKey(first))
{
if (disallowDuplicates)
{
throw new UriTreeException(
String.Format(
"Cannot insert item '{0}' with name '{1}' to group with full name '{2}', " +
"an item with that name already exists.", item, first, FullName
)
);
}
Items[first] = item;
}
else
{
Items.Add(first, item);
}
if (OnItemAdded != null)
{
OnItemAdded(first, item);
}
}
else
{
if (!Subnodes.ContainsKey(first))
{
var newNode = (T)Activator.CreateInstance(typeof(NodeType), first);
newNode.SetParent((T)this); // will add to Subnodes automatically.
}
Subnodes[first].InsertItem <NodeType>(nameParts, item, disallowDuplicates);
}
}
