/// <summary>
/// Searches active tool from top level, depth first, given predicate.
/// </summary>
/// <typeparam name="T">Type of the tool.</typeparam>
/// <param name="tool">Parent tool to start from.</param>
/// <param name="pred">Tool predicate.</param>
/// <returns>Tool given type and predicate if active - otherwise null.</returns>
public static T FindActive <T>(Tool tool, Predicate <T> pred) where T : Tool
{
if (tool == null)
{
return(null);
}
T typedTool = tool as T;
if (typedTool != null && pred(typedTool))
{
return(typedTool);
}
foreach (Tool child in tool.GetChildren())
{
T result = FindActive(child, pred);
if (result != null)
{
return(result);
}
}
return(null);
}
private static void TraverseActive(Tool parent, Action <Tool> visitor)
{
if (parent == null || visitor == null)
{
return;
}
visitor(parent);
foreach (var child in parent.GetChildren())
{
TraverseActive(child, visitor);
}
}
