internal static void RegisterCustomExtension(ProjectModelExtensionNode node)
{
customNodes.Add(node);
LoadExtensions();
}
internal static void UnregisterCustomExtension(ProjectModelExtensionNode node)
{
customNodes.Remove(node);
LoadExtensions();
}
/// <summary>
/// Ensures that this project has the extensions it requires according to its current state
/// </summary>
/// <remarks>
/// This method will load new extensions that this project supports and will unload extensions that are not supported anymore.
/// The set of extensions that a project supports may change over time, depending on the status of the project.
/// </remarks>
public void RefreshExtensions()
{
// First of all look for new extensions that should be attached
// Get the list of nodes for which an extension has been created
var allExtensions = extensionChain.GetAllExtensions().OfType <WorkspaceObjectExtension> ().ToList();
var loadedNodes = allExtensions.Select(ex => ex.SourceExtensionNode).ToList();
var newExtensions = ImmutableList <WorkspaceObjectExtension> .Empty;
ProjectModelExtensionNode lastAddedNode = null;
foreach (ProjectModelExtensionNode node in GetModelExtensions(extensionContext))
{
// If the node already generated an extension, skip it
if (loadedNodes.Contains(node))
{
lastAddedNode = node;
continue;
}
// Maybe the node can now generate an extension for this project
if (node.CanHandleObject(this))
{
var ext = node.CreateExtension();
if (ext.SupportsObject(this))
{
ext.SourceExtensionNode = node;
newExtensions = newExtensions.Add(ext);
if (lastAddedNode != null)
{
// There is an extension before this one. Find it and add the new extension after it.
var prevExtension = allExtensions.FirstOrDefault(ex => ex.SourceExtensionNode == lastAddedNode);
extensionChain.AddExtension(ext, prevExtension);
}
else
{
extensionChain.AddExtension(ext);
}
ext.Init(this);
}
}
}
// Now dispose extensions that are not supported anymore
foreach (var ext in allExtensions)
{
if (!ext.SupportsObject(this))
{
ext.Dispose();
}
}
foreach (var e in newExtensions)
{
e.OnExtensionChainCreated();
}
foreach (var e in newExtensions)
{
OnExtensionActivated(e);
}
}
