/// <summary>
/// Used to receive notifications when a node is browsed.
/// </summary>
public void OnPopulateBrowser(
ISystemContext context,
NodeState node,
NodeBrowser browser)
{
ParsedNodeId nodeId = ParsedNodeId.Parse(node.NodeId);
DirectoryInfo info = new DirectoryInfo(nodeId.RootId);
if (!info.Exists)
{
return;
}
if (browser.IsRequired(ReferenceTypeIds.Organizes, false))
{
foreach (DirectoryInfo child in info.GetDirectories())
{
ParsedNodeId childId = new ParsedNodeId();
childId.RootType = 0;
childId.RootId = child.FullName;
childId.NamespaceIndex = NamespaceIndex;
browser.Add(new NodeStateReference(ReferenceTypeIds.Organizes, false, childId.Construct()));
}
}
if (browser.IsRequired(ReferenceTypeIds.Organizes, true))
{
ParsedNodeId parentId = new ParsedNodeId();
parentId.RootType = 0;
parentId.RootId = info.Parent.FullName;
parentId.NamespaceIndex = NamespaceIndex;
browser.Add(new NodeStateReference(ReferenceTypeIds.Organizes, true, parentId.Construct()));
}
}
/// <summary>
/// Populates the browser with references that meet the criteria.
/// </summary>
/// <param name="context">The context for the system being accessed.</param>
/// <param name="browser">The browser to populate.</param>
protected override void PopulateBrowser(ISystemContext context, NodeBrowser browser)
{
base.PopulateBrowser(context, browser);
// check if the parent segments need to be returned.
if (browser.IsRequired(ReferenceTypeIds.Organizes, true))
{
if (!(context.SystemHandle is UnderlyingSystem system))
{
return;
}
// add reference for parent segment.
var segment = system.FindParentForSegment(SegmentPath);
if (segment != null)
{
browser.Add(ReferenceTypeIds.Organizes, true, ModelUtils.ConstructIdForSegment(segment.Id, NodeId.NamespaceIndex));
}
}
}
/// <summary>
/// Populates the browser with references that meet the criteria.
/// </summary>
/// <param name="context">The context for the system being accessed.</param>
/// <param name="browser">The browser to populate.</param>
protected override void PopulateBrowser(ISystemContext context, NodeBrowser browser)
{
base.PopulateBrowser(context, browser);
// check if the parent segments need to be returned.
if (browser.IsRequired(ReferenceTypeIds.Organizes, true))
{
if (!(context.SystemHandle is UnderlyingSystem system))
{
return;
}
// add reference for each segment.
var segments = system.FindSegmentsForBlock(_blockId);
for (var ii = 0; ii < segments.Count; ii++)
{
browser.Add(ReferenceTypeIds.Organizes, true, ModelUtils.ConstructIdForSegment(segments[ii].Id, NodeId.NamespaceIndex));
}
}
}