public bool ChangePosition <T>(ObservableList <TreeNode <T> > nodes, Predicate <TreeNode <T> > match, int position)
{
var findedNode = nodes.Find(match);
if (findedNode != null)
{
nodes.BeginUpdate();
nodes.Remove(findedNode);
nodes.Insert(position, findedNode);
nodes.EndUpdate();
return(true);
}
foreach (var node in nodes)
{
if (node.Nodes == null)
{
continue;
}
if (ChangePosition(node.Nodes as ObservableList <TreeNode <T> >, match, position))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Remove node if it's match specified function.
/// </summary>
/// <typeparam name="T">Node type.</typeparam>
/// <param name="nodes">Nodes.</param>
/// <param name="match">Match function.</param>
/// <returns>true if node removed; otherwise, false.</returns>
public static bool Remove <T>(ObservableList <TreeNode <T> > nodes, Predicate <TreeNode <T> > match)
{
var findedNode = nodes.Find(match);
if (findedNode != null)
{
findedNode.Parent = null;
// this.nodes.Add(findedNode as TreeNode<TreeViewItem>);
return(true);
}
foreach (var node in nodes)
{
if (node.Nodes == null)
{
continue;
}
if (Remove(node.Nodes, match))
{
return(true);
}
}
return(false);
}
public T Find(Func <T, bool> condition)
{
return(_list.Find(condition));
}
/// <summary>
/// Finds child named childWord. If not found, returns null.
/// </summary>
/// <param name="childWord">Word to find</param>
/// <returns>Found node</returns>
public WordMapNode FindChild(string childWord)
{
WordMapNode foundNode = Next.Find(x => x.Word == childWord);
return(foundNode);
}
