/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="xml"></param>
/// <param name="catalog"></param>
/// <param name="exports"></param>
Document(
Func<Document, XDocument> xml,
ComposablePartCatalog catalog,
ExportProvider exports)
{
Contract.Requires<ArgumentNullException>(xml != null);
// configure composition
this.configuration = GetConfiguration(catalog, exports);
this.container = new CompositionContainer(configuration.HostCatalog, true, new CompositionContainer(configuration.GlobalCatalog, true, configuration.Exports));
this.container.GetExportedValue<DocumentEnvironment>().SetHost(this);
// required services
this.invoker = container.GetExportedValue<IInvoker>();
this.trace = container.GetExportedValue<ITraceService>();
// initialize xml
this.xml = xml(this);
this.xml.AddAnnotation(this);
// parallel initialization of common interfaces
Parallel.ForEach(this.xml.DescendantNodesAndSelf(), i =>
{
Enumerable.Empty<object>()
.Concat(i.Interfaces<IOnInit>())
.Concat(i.Interfaces<IOnLoad>())
.ToLinkedList();
});
// initial invocation entry
this.invoker.Invoke(() => { });
}
/// <summary>
/// Implements the getter for Default.
/// </summary>
/// <returns></returns>
static CompositionConfiguration GetDefault()
{
if (defaultCompositionConfiguration == null)
lock (sync)
if (defaultCompositionConfiguration == null)
return defaultCompositionConfiguration = new CompositionConfiguration(
CompositionUtil.DefaultGlobalCatalog,
CompositionUtil.DefaultHostCatalog,
CompositionUtil.DefaultObjectCatalog,
new CompositionContainer());
return defaultCompositionConfiguration;
}
