// Expand/multiselect node if the path is found under it.
private bool SearchAndSelectPath(TreeViewNode node, string path)
{
if (node is DirectoryTreeViewNode)
{
DirectoryTreeViewNode directory = node as DirectoryTreeViewNode;
if (path.StartsWith(directory.FullPath + "/"))
{
foreach (TreeViewNode child in directory.Children)
{
bool found = SearchAndSelectPath(child, path);
if (found)
{
directory.IsExpanded = true;
return(true);
}
}
}
}
else if (node is SongMetadataTreeViewNode)
{
SongMetadataTreeViewNode song = node as SongMetadataTreeViewNode;
if (song.Song.Path == path)
{
song.IsMultiSelected = true;
return(true);
}
}
return(false);
}
private void PopulateDirectoryTree()
{
DirectoryTreeController.ClearMultiSelection();
DirectoryTree.Clear();
DirectoryTreeViewNode rootNode = new DirectoryTreeViewNode("/", null, DirectoryTreeController);
IDictionary <string, TreeViewNode> directoryLookup = new SortedDictionary <string, TreeViewNode>();
directoryLookup[rootNode.DisplayString] = rootNode;
foreach (SongMetadata song in m_DataModel.Database.Songs)
{
TreeViewNode parent = FindDirectoryNode(song.Directory, directoryLookup, rootNode);
SongMetadataTreeViewNode leaf = new SongMetadataTreeViewNode(song.Filename, song, parent, DirectoryTreeController);
parent.AddChild(leaf);
}
AssignTreeViewNodeIDs(rootNode, 0);
if (rootNode.Children.Count > 0)
{
DirectoryTree.Add(rootNode);
rootNode.IsExpanded = true;
}
}
private TreeViewNode FindDirectoryNode(string path, IDictionary <string, TreeViewNode> lookup, TreeViewNode rootNode)
{
if (path == "")
{
return(rootNode);
}
else if (lookup.ContainsKey(path))
{
return(lookup[path]);
}
else
{
Tuple <string, string> parentAndSelf = Utils.SplitPath(path);
TreeViewNode parent = FindDirectoryNode(parentAndSelf.Item1, lookup, rootNode);
TreeViewNode self = new DirectoryTreeViewNode(parentAndSelf.Item2, parent, DirectoryTreeController);
parent.AddChild(self);
lookup[path] = self;
return(self);
}
}
public void ShowSongsInDirectoryTree(IEnumerable <SongMetadata> selectedSongs)
{
DirectoryTreeController.ClearMultiSelection();
// This looks more complex than necessary because it is trying to
// support multiple roots.
foreach (TreeViewNode root in DirectoryTreeController.RootLevelNodes)
{
if (root is DirectoryTreeViewNode)
{
DirectoryTreeViewNode rootDirectory = root as DirectoryTreeViewNode;
foreach (TreeViewNode node in rootDirectory.Children)
{
node.IsExpanded = false;
foreach (SongMetadata song in selectedSongs)
{
SearchAndSelectPath(node, song.Path);
}
}
}
}
}
