/// <summary>
/// Gets the <see cref="PluginTreeNode"/> representing the specified path.
/// </summary>
/// <param name="path">The path of the Plugin tree node</param>
/// <param name="throwOnNotFound">
/// If set to <c>true</c>, this method throws a
/// <see cref="TreePathNotFoundException"/> when the path does not exist.
/// If set to <c>false</c>, <c>null</c> is returned for non-existing paths.
/// </param>
public static PluginTreeNode GetTreeNode(string path, bool throwOnNotFound)
{
if (path == null || path.Length == 0)
{
return(rootNode);
}
string[] splittedPath = path.Split('/');
PluginTreeNode curPath = rootNode;
int i = 0;
while (i < splittedPath.Length)
{
if (!curPath.ChildNodes.TryGetValue(splittedPath[i], out curPath))
{
if (throwOnNotFound)
{
throw new TreePathNotFoundException(path);
}
else
{
return(null);
}
}
// curPath = curPath.ChildNodes[splittedPath[i]]; already done by TryGetValue
++i;
}
return(curPath);
}
static void AddExtensionPath(ExtensionPath path)
{
PluginTreeNode treePath = CreatePath(rootNode, path.Name);
foreach (Extension extension in path.Extensions)
{
treePath.Extensions.Add(extension);
}
}
/// <summary>
/// Builds a single item in the addin tree.
/// </summary>
/// <param name="path">A path to the item in the addin tree.</param>
/// <param name="caller">The owner used to create the objects.</param>
/// <exception cref="TreePathNotFoundException">The path does not
/// exist or does not point to an item.</exception>
public static object BuildItem(string path, object caller)
{
int pos = path.LastIndexOf('/');
string parent = path.Substring(0, pos);
string child = path.Substring(pos + 1);
PluginTreeNode node = GetTreeNode(parent);
return(node.BuildChildItem(child, caller, new ArrayList(BuildItems <object>(parent, caller, false))));
}
/// <summary>
/// Builds the items in the path. Ensures that all items have the type T.
/// </summary>
/// <param name="path">A path in the addin tree.</param>
/// <param name="caller">The owner used to create the objects.</param>
/// <param name="throwOnNotFound">If true, throws a <see cref="TreePathNotFoundException"/>
/// if the path is not found. If false, an empty ArrayList is returned when the
/// path is not found.</param>
public static List <T> BuildItems <T>(string path, object caller, bool throwOnNotFound)
{
PluginTreeNode node = GetTreeNode(path, throwOnNotFound);
if (node == null)
{
return(new List <T>());
}
else
{
return(node.BuildChildItems <T>(caller));
}
}
static PluginTreeNode CreatePath(PluginTreeNode localRoot, string path)
{
if (path == null || path.Length == 0)
{
return(localRoot);
}
string[] splittedPath = path.Split('/');
PluginTreeNode curPath = localRoot;
int i = 0;
while (i < splittedPath.Length)
{
if (!curPath.ChildNodes.ContainsKey(splittedPath[i]))
{
curPath.ChildNodes[splittedPath[i]] = new PluginTreeNode();
}
curPath = curPath.ChildNodes[splittedPath[i]];
++i;
}
return(curPath);
}
/// <summary>
/// Checks whether the specified path exists in the Plugin tree.
/// </summary>
public static bool ExistsTreeNode(string path)
{
if (path == null || path.Length == 0)
{
return(true);
}
string[] splittedPath = path.Split('/');
PluginTreeNode curPath = rootNode;
int i = 0;
while (i < splittedPath.Length)
{
// curPath = curPath.ChildNodes[splittedPath[i]] - check if child path exists
if (!curPath.ChildNodes.TryGetValue(splittedPath[i], out curPath))
{
return(false);
}
++i;
}
return(true);
}
