private async Task<object> CreateNewDifferenceViewerAsync(PreviewWorkspace leftWorkspace, PreviewWorkspace rightWorkspace,
IProjectionBuffer originalBuffer, IProjectionBuffer changedBuffer, double zoomLevel, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
// leftWorkspace can be null if the change is adding a document.
// rightWorkspace can be null if the change is removing a document.
// However both leftWorkspace and rightWorkspace can't be null at the same time.
Contract.ThrowIfTrue((leftWorkspace == null) && (rightWorkspace == null));
var diffBuffer = _differenceBufferService.CreateDifferenceBuffer(
originalBuffer, changedBuffer,
new StringDifferenceOptions(), disableEditing: true);
var diffViewer = _differenceViewerService.CreateDifferenceView(diffBuffer, _previewRoleSet);
diffViewer.Closed += (s, e) =>
{
if (leftWorkspace != null)
{
leftWorkspace.Dispose();
leftWorkspace = null;
}
if (rightWorkspace != null)
{
rightWorkspace.Dispose();
rightWorkspace = null;
}
};
const string DiffOverviewMarginName = "deltadifferenceViewerOverview";
if (leftWorkspace == null)
{
diffViewer.ViewMode = DifferenceViewMode.RightViewOnly;
diffViewer.RightView.ZoomLevel *= zoomLevel;
diffViewer.RightHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
else if (rightWorkspace == null)
{
diffViewer.ViewMode = DifferenceViewMode.LeftViewOnly;
diffViewer.LeftView.ZoomLevel *= zoomLevel;
diffViewer.LeftHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
else
{
diffViewer.ViewMode = DifferenceViewMode.Inline;
diffViewer.InlineView.ZoomLevel *= zoomLevel;
diffViewer.InlineHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
// Disable focus / tab stop for the diff viewer.
diffViewer.RightView.VisualElement.Focusable = false;
diffViewer.LeftView.VisualElement.Focusable = false;
diffViewer.InlineView.VisualElement.Focusable = false;
// This code path must be invoked on UI thread.
AssertIsForeground();
// We use ConfigureAwait(true) to stay on the UI thread.
await diffViewer.SizeToFitAsync().ConfigureAwait(true);
if (leftWorkspace != null)
{
leftWorkspace.EnableDiagnostic();
}
if (rightWorkspace != null)
{
rightWorkspace.EnableDiagnostic();
}
return new DifferenceViewerPreview(diffViewer);
}
public void TestPreviewDiagnosticTagger()
{
using (var workspace = CSharpWorkspaceFactory.CreateWorkspaceFromLines("class { }"))
using (var previewWorkspace = new PreviewWorkspace(workspace.CurrentSolution))
{
// set up to listen diagnostic changes so that we can wait until it happens
var diagnosticService = workspace.ExportProvider.GetExportedValue<IDiagnosticService>() as DiagnosticService;
var taskSource = new TaskCompletionSource<DiagnosticsUpdatedArgs>();
diagnosticService.DiagnosticsUpdated += (s, a) => taskSource.TrySetResult(a);
// preview workspace and owner of the solution now share solution and its underlying text buffer
var hostDocument = workspace.Projects.First().Documents.First();
var buffer = hostDocument.GetTextBuffer();
// enable preview diagnostics
previewWorkspace.OpenDocument(hostDocument.Id);
previewWorkspace.EnableDiagnostic();
var foregroundService = new TestForegroundNotificationService();
var optionsService = workspace.Services.GetService<IOptionService>();
var squiggleWaiter = new ErrorSquiggleWaiter();
// create a tagger for preview workspace
var taggerSource = new DiagnosticsSquiggleTaggerProvider.TagSource(buffer, foregroundService, diagnosticService, optionsService, squiggleWaiter);
// wait up to 20 seconds for diagnostic service
taskSource.Task.Wait(20000);
if (!taskSource.Task.IsCompleted)
{
// something is wrong
FatalError.Report(new System.Exception("not finished after 20 seconds"));
}
// wait for tagger
squiggleWaiter.CreateWaitTask().PumpingWait();
var snapshot = buffer.CurrentSnapshot;
var intervalTree = taggerSource.GetTagIntervalTreeForBuffer(buffer);
var spans = intervalTree.GetIntersectingSpans(new SnapshotSpan(snapshot, 0, snapshot.Length));
taggerSource.TestOnly_Dispose();
Assert.Equal(1, spans.Count);
}
}
public void TestPreviewDiagnostic()
{
var diagnosticService = TestExportProvider.ExportProviderWithCSharpAndVisualBasic.GetExportedValue<IDiagnosticAnalyzerService>() as IDiagnosticUpdateSource;
var taskSource = new TaskCompletionSource<DiagnosticsUpdatedArgs>();
diagnosticService.DiagnosticsUpdated += (s, a) => taskSource.TrySetResult(a);
using (var previewWorkspace = new PreviewWorkspace(MefV1HostServices.Create(TestExportProvider.ExportProviderWithCSharpAndVisualBasic.AsExportProvider())))
{
var solution = previewWorkspace.CurrentSolution
.AddProject("project", "project.dll", LanguageNames.CSharp)
.AddDocument("document", "class { }")
.Project
.Solution;
Assert.True(previewWorkspace.TryApplyChanges(solution));
previewWorkspace.OpenDocument(previewWorkspace.CurrentSolution.Projects.First().DocumentIds[0]);
previewWorkspace.EnableDiagnostic();
// wait 20 seconds
taskSource.Task.Wait(20000);
if (!taskSource.Task.IsCompleted)
{
// something is wrong
FatalError.Report(new System.Exception("not finished after 20 seconds"));
}
var args = taskSource.Task.Result;
Assert.True(args.Diagnostics.Length > 0);
}
}
public void TestPreviewDiagnosticTagger()
{
using (var workspace = CSharpWorkspaceFactory.CreateWorkspaceFromLines("class { }"))
using (var previewWorkspace = new PreviewWorkspace(workspace.CurrentSolution))
{
//// preview workspace and owner of the solution now share solution and its underlying text buffer
var hostDocument = workspace.Projects.First().Documents.First();
//// enable preview diagnostics
previewWorkspace.EnableDiagnostic();
var spans = SquiggleUtilities.GetErrorSpans(workspace);
Assert.Equal(1, spans.Count);
}
}
public async Task TestPreviewDiagnosticTagger()
{
using (var workspace = await TestWorkspace.CreateCSharpAsync("class { }"))
using (var previewWorkspace = new PreviewWorkspace(workspace.CurrentSolution))
{
//// preview workspace and owner of the solution now share solution and its underlying text buffer
var hostDocument = workspace.Projects.First().Documents.First();
//// enable preview diagnostics
previewWorkspace.EnableDiagnostic();
var diagnosticsAndErrorsSpans = await SquiggleUtilities.GetDiagnosticsAndErrorSpans(workspace);
const string AnalzyerCount = "Analyzer Count: ";
Assert.Equal(AnalzyerCount + 1, AnalzyerCount + diagnosticsAndErrorsSpans.Item1.Length);
const string SquigglesCount = "Squiggles Count: ";
Assert.Equal(SquigglesCount + 1, SquigglesCount + diagnosticsAndErrorsSpans.Item2.Count);
}
}
public void TestPreviewDiagnostic()
{
var diagnosticService = EditorServicesUtil.ExportProvider.GetExportedValue<IDiagnosticAnalyzerService>() as IDiagnosticUpdateSource;
var taskSource = new TaskCompletionSource<DiagnosticsUpdatedArgs>();
diagnosticService.DiagnosticsUpdated += (s, a) => taskSource.TrySetResult(a);
using (var previewWorkspace = new PreviewWorkspace(MefV1HostServices.Create(EditorServicesUtil.ExportProvider.AsExportProvider())))
{
var solution = previewWorkspace.CurrentSolution
.AddProject("project", "project.dll", LanguageNames.CSharp)
.AddDocument("document", "class { }")
.Project
.Solution;
Assert.True(previewWorkspace.TryApplyChanges(solution));
previewWorkspace.OpenDocument(previewWorkspace.CurrentSolution.Projects.First().DocumentIds[0]);
previewWorkspace.EnableDiagnostic();
// wait 20 seconds
taskSource.Task.Wait(20000);
Assert.True(taskSource.Task.IsCompleted);
var args = taskSource.Task.Result;
Assert.True(args.Diagnostics.Length > 0);
}
}
