private static async Task InitializeMef()
{
// Cannot show MessageBox here, because WPF would crash with a XamlParseException
// Remember and show exceptions in text output, once MainWindow is properly initialized
try
{
// Set up VS MEF. For now, only do MEF1 part discovery, since that was in use before.
// To support both MEF1 and MEF2 parts, just change this to:
// var discovery = PartDiscovery.Combine(new AttributedPartDiscoveryV1(Resolver.DefaultInstance),
// new AttributedPartDiscovery(Resolver.DefaultInstance));
var discovery = new AttributedPartDiscoveryV1(Resolver.DefaultInstance);
var catalog = ComposableCatalog.Create(Resolver.DefaultInstance);
var pluginDir = Path.GetDirectoryName(typeof(App).Module.FullyQualifiedName);
if (pluginDir != null)
{
foreach (var plugin in Directory.GetFiles(pluginDir, "*.Plugin.dll"))
{
var name = Path.GetFileNameWithoutExtension(plugin);
try
{
var asm = Assembly.Load(name);
var parts = await discovery.CreatePartsAsync(asm);
catalog = catalog.AddParts(parts);
}
catch (Exception ex)
{
StartupExceptions.Add(new ExceptionData {
Exception = ex, PluginName = name
});
}
}
}
// Add the built-in parts
var createdParts = await discovery.CreatePartsAsync(Assembly.GetExecutingAssembly());
catalog = catalog.AddParts(createdParts);
// If/When the project switches to .NET Standard/Core, this will be needed to allow metadata interfaces (as opposed
// to metadata classes). When running on .NET Framework, it's automatic.
// catalog.WithDesktopSupport();
// If/When any part needs to import ICompositionService, this will be needed:
// catalog.WithCompositionService();
var config = CompositionConfiguration.Create(catalog);
ExportProviderFactory = config.CreateExportProviderFactory();
ExportProvider = ExportProviderFactory.CreateExportProvider();
// This throws exceptions for composition failures. Alternatively, the configuration's CompositionErrors property
// could be used to log the errors directly. Used at the end so that it does not prevent the export provider setup.
config.ThrowOnErrors();
}
catch (Exception ex)
{
StartupExceptions.Add(new ExceptionData {
Exception = ex
});
}
}
IExportProviderFactory CreateExportProviderFactorySlow(Resolver resolver)
{
var discovery = new AttributedPartDiscoveryV1(resolver);
var parts = discovery.CreatePartsAsync(mefAssemblies).Result;
Debug.Assert(parts.ThrowOnErrors() == parts);
var catalog = ComposableCatalog.Create(resolver).AddParts(parts);
var config = CompositionConfiguration.Create(catalog);
Debug.Assert(config.ThrowOnErrors() == config);
writingCachedMefFile = true;
Task.Run(() => SaveMefStateAsync(config)).ContinueWith(t => {
var ex = t.Exception;
Debug.Assert(ex == null);
writingCachedMefFile = false;
}, CancellationToken.None);
return(config.CreateExportProviderFactory());
}
public App()
{
var cmdArgs = Environment.GetCommandLineArgs().Skip(1);
App.CommandLineArguments = new CommandLineArguments(cmdArgs);
if ((App.CommandLineArguments.SingleInstance ?? true) && !MiscSettingsPanel.CurrentMiscSettings.AllowMultipleInstances)
{
cmdArgs = cmdArgs.Select(FullyQualifyPath);
string message = string.Join(Environment.NewLine, cmdArgs);
if (SendToPreviousInstance("ILSpy:\r\n" + message, !App.CommandLineArguments.NoActivate))
{
Environment.Exit(0);
}
}
InitializeComponent();
if (!System.Diagnostics.Debugger.IsAttached)
{
AppDomain.CurrentDomain.UnhandledException += ShowErrorBox;
Dispatcher.CurrentDispatcher.UnhandledException += Dispatcher_UnhandledException;
}
TaskScheduler.UnobservedTaskException += DotNet40_UnobservedTaskException;
// Cannot show MessageBox here, because WPF would crash with a XamlParseException
// Remember and show exceptions in text output, once MainWindow is properly initialized
try {
// Set up VS MEF. For now, only do MEF1 part discovery, since that was in use before.
// To support both MEF1 and MEF2 parts, just change this to:
// var discovery = PartDiscovery.Combine(new AttributedPartDiscoveryV1(Resolver.DefaultInstance),
// new AttributedPartDiscovery(Resolver.DefaultInstance));
var discovery = new AttributedPartDiscoveryV1(Resolver.DefaultInstance);
var catalog = ComposableCatalog.Create(Resolver.DefaultInstance);
var pluginDir = Path.GetDirectoryName(typeof(App).Module.FullyQualifiedName);
if (pluginDir != null)
{
foreach (var plugin in Directory.GetFiles(pluginDir, "*.Plugin.dll"))
{
var name = Path.GetFileNameWithoutExtension(plugin);
try {
var asm = Assembly.Load(name);
var parts = discovery.CreatePartsAsync(asm).Result;
catalog = catalog.AddParts(parts);
} catch (Exception ex) {
StartupExceptions.Add(new ExceptionData {
Exception = ex, PluginName = name
});
}
}
}
// Add the built-in parts
catalog = catalog.AddParts(discovery.CreatePartsAsync(Assembly.GetExecutingAssembly()).Result);
// If/When the project switches to .NET Standard/Core, this will be needed to allow metadata interfaces (as opposed
// to metadata classes). When running on .NET Framework, it's automatic.
// catalog.WithDesktopSupport();
// If/When any part needs to import ICompositionService, this will be needed:
// catalog.WithCompositionService();
var config = CompositionConfiguration.Create(catalog);
exportProviderFactory = config.CreateExportProviderFactory();
exportProvider = exportProviderFactory.CreateExportProvider();
// This throws exceptions for composition failures. Alternatively, the configuration's CompositionErrors property
// could be used to log the errors directly. Used at the end so that it does not prevent the export provider setup.
config.ThrowOnErrors();
} catch (Exception ex) {
StartupExceptions.Add(new ExceptionData {
Exception = ex
});
}
Languages.Initialize(exportProvider);
EventManager.RegisterClassHandler(typeof(Window),
Hyperlink.RequestNavigateEvent,
new RequestNavigateEventHandler(Window_RequestNavigate));
ILSpyTraceListener.Install();
}