public PlaylistTreeModel()
{
Root = new PlaylistTreeNodeBase
{
Model = this
};
}
internal void OnNodeRemoved(PlaylistTreeNodeBase parent, int index, PlaylistTreeNodeBase node)
{
if (NodesRemoved != null)
{
var args = new TreeModelEventArgs(GetPath(parent), new[] { index }, new object[] { node });
NodesRemoved(this, args);
}
}
public TreePath GetPath(PlaylistTreeNodeBase node)
{
if (node == Root)
{
return(TreePath.Empty);
}
var stack = new Stack <object>();
while (node != Root)
{
stack.Push(node);
node = node.Parent;
}
return(new TreePath(stack.ToArray()));
}
private static PlaylistTreeNodeBase FindNode(PlaylistTreeNodeBase root, TreePath path, int level)
{
foreach (var node in root.Nodes)
{
if (node == path.FullPath[level])
{
if (level == path.FullPath.Length - 1)
{
return(node);
}
else
{
return(FindNode(node, path, level + 1));
}
}
}
return(null);
}