public EventHookupSession(
EventHookupSessionManager eventHookupSessionManager,
EventHookupCommandHandler commandHandler,
ITextView textView,
ITextBuffer subjectBuffer,
IAsynchronousOperationListener asyncListener,
Mutex testSessionHookupMutex)
: base(eventHookupSessionManager.ThreadingContext)
{
AssertIsForeground();
_cancellationTokenSource = new CancellationTokenSource();
var cancellationToken = _cancellationTokenSource.Token;
_textView = textView;
_subjectBuffer = subjectBuffer;
this.TESTSessionHookupMutex = testSessionHookupMutex;
var document = textView.TextSnapshot.GetOpenDocumentInCurrentContextWithChanges();
if (document != null && document.Project.Solution.Workspace.CanApplyChange(ApplyChangesKind.ChangeDocument))
{
var position = textView.GetCaretPoint(subjectBuffer).Value.Position;
_trackingPoint = textView.TextSnapshot.CreateTrackingPoint(position, PointTrackingMode.Negative);
// If the caret is at the end of the document we just create an empty span
var length = textView.TextSnapshot.Length > position + 1 ? 1 : 0;
_trackingSpan = textView.TextSnapshot.CreateTrackingSpan(new Span(position, length), SpanTrackingMode.EdgeInclusive);
var asyncToken = asyncListener.BeginAsyncOperation(GetType().Name + ".Start");
this.GetEventNameTask = Task.Factory.SafeStartNewFromAsync(
() => DetermineIfEventHookupAndGetHandlerNameAsync(document, position, cancellationToken),
cancellationToken,
TaskScheduler.Default);
var continuedTask = this.GetEventNameTask.SafeContinueWithFromAsync(
async t =>
{
await ThreadingContext.JoinableTaskFactory.SwitchToMainThreadAsync(alwaysYield: true, cancellationToken);
if (t.Result != null)
{
commandHandler.EventHookupSessionManager.EventHookupFoundInSession(this);
}
},
cancellationToken,
TaskContinuationOptions.OnlyOnRanToCompletion | TaskContinuationOptions.ExecuteSynchronously,
TaskScheduler.Default);
continuedTask.CompletesAsyncOperation(asyncToken);
}
else
{
_trackingPoint = textView.TextSnapshot.CreateTrackingPoint(0, PointTrackingMode.Negative);
_trackingSpan = textView.TextSnapshot.CreateTrackingSpan(new Span(), SpanTrackingMode.EdgeInclusive);
this.GetEventNameTask = SpecializedTasks.Null <string>();
eventHookupSessionManager.CancelAndDismissExistingSessions();
}
}
internal void BeginSession(
EventHookupCommandHandler eventHookupCommandHandler,
ITextView textView,
ITextBuffer subjectBuffer,
IAsynchronousOperationListener asyncListener,
Mutex testSessionHookupMutex)
{
CurrentSession = new EventHookupSession(this, eventHookupCommandHandler, textView, subjectBuffer, asyncListener, testSessionHookupMutex);
}
internal void BeginSession(
EventHookupCommandHandler eventHookupCommandHandler,
ITextView textView,
ITextBuffer subjectBuffer,
AggregateAsynchronousOperationListener asyncListener,
Mutex testSessionHookupMutex)
{
CurrentSession = new EventHookupSession(this, eventHookupCommandHandler, textView, subjectBuffer, asyncListener, testSessionHookupMutex);
}
public EventHookupTestState(XElement workspaceElement) : base(workspaceElement, null, false)
{
CommandHandlerService t = (CommandHandlerService)Workspace.GetService<ICommandHandlerServiceFactory>().GetService(Workspace.Documents.Single().TextBuffer);
var field = t.GetType().GetField("_commandHandlers", BindingFlags.NonPublic | BindingFlags.GetField | BindingFlags.Instance);
var handlers = (IEnumerable<Lazy<ICommandHandler, OrderableContentTypeMetadata>>)field.GetValue(t);
_commandHandler = handlers.Single(h => h.Value is EventHookupCommandHandler).Value as EventHookupCommandHandler;
_testSessionHookupMutex = new Mutex(false);
_commandHandler.TESTSessionHookupMutex = _testSessionHookupMutex;
}
public EventHookupSession(
EventHookupSessionManager eventHookupSessionManager,
EventHookupCommandHandler commandHandler,
ITextView textView,
ITextBuffer subjectBuffer,
IAsynchronousOperationListener asyncListener,
Mutex testSessionHookupMutex)
{
AssertIsForeground();
_cancellationTokenSource = new CancellationTokenSource();
_textView = textView;
_subjectBuffer = subjectBuffer;
this.TESTSessionHookupMutex = testSessionHookupMutex;
var document = textView.TextSnapshot.GetOpenDocumentInCurrentContextWithChanges();
if (document != null && document.Project.Solution.Workspace.CanApplyChange(ApplyChangesKind.ChangeDocument))
{
var position = textView.GetCaretPoint(subjectBuffer).Value.Position;
_trackingPoint = textView.TextSnapshot.CreateTrackingPoint(position, PointTrackingMode.Negative);
_trackingSpan = textView.TextSnapshot.CreateTrackingSpan(new Span(position, 1), SpanTrackingMode.EdgeInclusive);
var asyncToken = asyncListener.BeginAsyncOperation(GetType().Name + ".Start");
this.GetEventNameTask = Task.Factory.SafeStartNewFromAsync(
() => DetermineIfEventHookupAndGetHandlerNameAsync(document, position, _cancellationTokenSource.Token),
_cancellationTokenSource.Token,
TaskScheduler.Default);
var continuedTask = this.GetEventNameTask.SafeContinueWith(t =>
{
AssertIsForeground();
if (t.Result != null)
{
commandHandler.EventHookupSessionManager.EventHookupFoundInSession(this);
}
},
_cancellationTokenSource.Token,
TaskContinuationOptions.OnlyOnRanToCompletion,
ForegroundThreadAffinitizedObject.DefaultForegroundThreadData.TaskScheduler);
continuedTask.CompletesAsyncOperation(asyncToken);
}
else
{
_trackingPoint = textView.TextSnapshot.CreateTrackingPoint(0, PointTrackingMode.Negative);
_trackingSpan = textView.TextSnapshot.CreateTrackingSpan(new Span(), SpanTrackingMode.EdgeInclusive);
this.GetEventNameTask = SpecializedTasks.Default <string>();
eventHookupSessionManager.CancelAndDismissExistingSessions();
}
}
public EventHookupSession(
EventHookupSessionManager eventHookupSessionManager,
EventHookupCommandHandler commandHandler,
ITextView textView,
ITextBuffer subjectBuffer,
IAsynchronousOperationListener asyncListener,
Mutex testSessionHookupMutex)
{
AssertIsForeground();
_cancellationTokenSource = new CancellationTokenSource();
_textView = textView;
_subjectBuffer = subjectBuffer;
this.TESTSessionHookupMutex = testSessionHookupMutex;
var document = textView.TextSnapshot.GetOpenDocumentInCurrentContextWithChanges();
if (document != null && document.Project.Solution.Workspace.CanApplyChange(ApplyChangesKind.ChangeDocument))
{
var position = textView.GetCaretPoint(subjectBuffer).Value.Position;
_trackingPoint = textView.TextSnapshot.CreateTrackingPoint(position, PointTrackingMode.Negative);
_trackingSpan = textView.TextSnapshot.CreateTrackingSpan(new Span(position, 1), SpanTrackingMode.EdgeInclusive);
var asyncToken = asyncListener.BeginAsyncOperation(GetType().Name + ".Start");
this.GetEventNameTask = Task.Factory.SafeStartNewFromAsync(
() => DetermineIfEventHookupAndGetHandlerNameAsync(document, position, _cancellationTokenSource.Token),
_cancellationTokenSource.Token,
TaskScheduler.Default);
var continuedTask = this.GetEventNameTask.SafeContinueWith(t =>
{
AssertIsForeground();
if (t.Result != null)
{
commandHandler.EventHookupSessionManager.EventHookupFoundInSession(this);
}
},
_cancellationTokenSource.Token,
TaskContinuationOptions.OnlyOnRanToCompletion,
ForegroundThreadAffinitizedObject.CurrentForegroundThreadData.TaskScheduler);
continuedTask.CompletesAsyncOperation(asyncToken);
}
else
{
_trackingPoint = textView.TextSnapshot.CreateTrackingPoint(0, PointTrackingMode.Negative);
_trackingSpan = textView.TextSnapshot.CreateTrackingSpan(new Span(), SpanTrackingMode.EdgeInclusive);
this.GetEventNameTask = SpecializedTasks.Default<string>();
eventHookupSessionManager.CancelAndDismissExistingSessions();
}
}
