public IFilter BuildFilter(FilterTreePath path)
{
if (path != null && path.Segments.Count > 0)
{
throw new ArgumentException(string.Format("{0} must be null or empty when building a filter from a {1}", nameof(path), GetType().Name), nameof(path));
}
return(BuildFilter());
}
public void AddFilter(IFilter filter, FilterTreePath path)
{
if (path != null && path.Segments.Count > 0)
{
throw new ArgumentException(string.Format("{0} must be null or empty when adding a filter to a {1}", nameof(path), GetType().Name), nameof(path));
}
AddFilter(filter);
}
/// <summary>
/// Builds a filter starting at the node specified in <paramref name="path"/>
/// including subfilters for parent and child nodes.
/// </summary>
/// <param name="path">The absolute path to the node from this node.</param>
/// <returns></returns>
public IFilter BuildFilter(FilterTreePath path)
{
//We won't add missing nodes to avoid polluting the tree.
//The filter will still be created correctly because the 'missing' nodes
//have a reference to the tree via their parent field and can therefore walk up correctly.
RelationshipFilterTree node = FindNodeForPath(path, false);
return(node.BuildChildAndParentFilters(null));
}
/// <summary>
/// Finds the node for the role specified in <paramref name="path"/>.
/// </summary>
/// <param name="path">The absolute path to the node from this node.</param>
/// <param name="addMissingNodesToTree">Whether to add any missing nodes to the tree.</param>
/// <returns></returns>
protected RelationshipFilterTree FindNodeForPath(FilterTreePath path, bool addMissingNodesToTree)
{
RelationshipFilterTree node = this;
if (path != null)
{
foreach (FilterTreePathSegment segment in path.Segments)
{
node = node.FindChild(segment.Role, addMissingNodesToTree);
}
}
return(node);
}
/// <summary>
/// Combines multiple <see cref="FilterTreePath"/>s into a single path.
/// </summary>
/// <param name="parts">The <see cref="FilterTreePath"/>s to combine</param>
/// <returns></returns>
public static FilterTreePath Combine(params FilterTreePath[] parts)
{
IEnumerable <FilterTreePath> validPaths = parts.Where(p => p != null && p.Segments.Count > 0);
FilterTreePath combinedPath = null;
foreach (FilterTreePath part in validPaths)
{
if (combinedPath == null)
{
combinedPath = new FilterTreePath();
}
foreach (FilterTreePathSegment segment in part.Segments)
{
combinedPath.Segments.Add(segment);
}
}
return(combinedPath);
}
/// <summary>
/// Adds a linked id for the role specified in <paramref name="path"/>.
/// The linked id will override any existing filters for the node.
/// </summary>
/// <param name="linkedId">The media item id to link to the node.</param>
/// <param name="path">The absolute path to the node from this node.</param>
public void AddLinkedId(Guid linkedId, FilterTreePath path)
{
RelationshipFilterTree node = FindNodeForPath(path, true);
node.LinkedIds.Add(linkedId);
}
/// <summary>
/// Adds a filter to the node specified in <paramref name="path"/>.
/// </summary>
/// <param name="filter">The filter to add. The filter will be combined with any existing filters for the node.</param>
/// <param name="path">The absolute path to the node from this node.</param>
public void AddFilter(IFilter filter, FilterTreePath path)
{
RelationshipFilterTree node = FindNodeForPath(path, true);
node.CombineFilter(filter);
}
public void AddLinkedId(Guid linkedId, FilterTreePath path)
{
throw new InvalidOperationException(string.Format("{0} does not support adding a linked id", GetType().Name));
}