public Task <object> CreateRemovedAdditionalDocumentPreviewViewAsync(TextDocument document, double zoomLevel, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
// Note: We don't use the original buffer that is associated with oldDocument
// (and possibly open in the editor) for oldBuffer below. This is because oldBuffer
// will be used inside a projection buffer inside our inline diff preview below
// and platform's implementation currently has a bug where projection buffers
// are being leaked. This leak means that if we use the original buffer that is
// currently visible in the editor here, the projection buffer span calculation
// would be triggered every time user changes some code in this buffer (even though
// the diff view would long have been dismissed by the time user edits the code)
// resulting in crashes. Instead we create a new buffer from the same content.
// TODO: We could use ITextBufferCloneService instead here to clone the original buffer.
var oldBuffer = CreateNewPlainTextBuffer(document, cancellationToken);
// Create PreviewWorkspace around the buffer to be displayed in the diff preview
// so that all IDE services (colorizer, squiggles etc.) light up in this buffer.
var leftDocumentId = DocumentId.CreateNewId(document.Project.Id);
var leftSolution = document.Project.Solution
.RemoveAdditionalDocument(document.Id)
.AddAdditionalDocument(leftDocumentId, document.Name, oldBuffer.AsTextContainer().CurrentText);
var leftDocument = leftSolution.GetAdditionalDocument(leftDocumentId);
var leftWorkspace = new PreviewWorkspace(leftSolution);
leftWorkspace.OpenAdditionalDocument(leftDocumentId);
return(CreateRemovedDocumentPreviewViewCoreAsync(oldBuffer, leftWorkspace, leftDocument, zoomLevel, cancellationToken));
}
public IWpfDifferenceViewer CreateAddedAdditionalDocumentPreviewView(TextDocument document, double zoomLevel, CancellationToken cancellationToken)
{
var newBuffer = CreateNewPlainTextBuffer(document, cancellationToken);
// Create PreviewWorkspace around the buffer to be displayed in the diff preview
// so that all IDE services (colorizer, squiggles etc.) light up in this buffer.
var rightWorkspace = new PreviewWorkspace(
document.Project.Solution.WithAdditionalDocumentText(document.Id, newBuffer.AsTextContainer().CurrentText));
rightWorkspace.OpenAdditionalDocument(document.Id);
return(CreateAddedDocumentPreviewViewCore(newBuffer, rightWorkspace, document, zoomLevel, cancellationToken));
}
public Task <object> CreateChangedAdditionalDocumentPreviewViewAsync(TextDocument oldDocument, TextDocument newDocument, double zoomLevel, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
// Note: We don't use the original buffer that is associated with oldDocument
// (and currently open in the editor) for oldBuffer below. This is because oldBuffer
// will be used inside a projection buffer inside our inline diff preview below
// and platform's implementation currently has a bug where projection buffers
// are being leaked. This leak means that if we use the original buffer that is
// currently visible in the editor here, the projection buffer span calculation
// would be triggered every time user changes some code in this buffer (even though
// the diff view would long have been dismissed by the time user edits the code)
// resulting in crashes. Instead we create a new buffer from the same content.
// TODO: We could use ITextBufferCloneService instead here to clone the original buffer.
var oldBuffer = CreateNewPlainTextBuffer(oldDocument, cancellationToken);
var newBuffer = CreateNewPlainTextBuffer(newDocument, cancellationToken);
// Convert the diffs to be line based.
// Compute the diffs between the old text and the new.
var diffResult = ComputeEditDifferences(oldDocument, newDocument, cancellationToken);
// Need to show the spans in the right that are different.
var originalSpans = GetOriginalSpans(diffResult, cancellationToken);
var changedSpans = GetChangedSpans(diffResult, cancellationToken);
string description = null;
var originalLineSpans = CreateLineSpans(oldBuffer.CurrentSnapshot, originalSpans, cancellationToken);
var changedLineSpans = CreateLineSpans(newBuffer.CurrentSnapshot, changedSpans, cancellationToken);
// TODO: Why aren't we attaching conflict / warning annotations here like we do for regular documents above?
// Create PreviewWorkspaces around the buffers to be displayed on the left and right
// so that all IDE services (colorizer, squiggles etc.) light up in these buffers.
var leftDocumentId = DocumentId.CreateNewId(oldDocument.Project.Id);
var leftSolution = oldDocument.Project.Solution
.RemoveAdditionalDocument(oldDocument.Id)
.AddAdditionalDocument(leftDocumentId, oldDocument.Name, oldBuffer.AsTextContainer().CurrentText);
var leftWorkspace = new PreviewWorkspace(leftSolution);
leftWorkspace.OpenAdditionalDocument(leftDocumentId);
var rightWorkSpace = new PreviewWorkspace(
oldDocument.Project.Solution.WithAdditionalDocumentText(oldDocument.Id, newBuffer.AsTextContainer().CurrentText));
rightWorkSpace.OpenAdditionalDocument(newDocument.Id);
return(CreateChangedDocumentViewAsync(
oldBuffer, newBuffer, description, originalLineSpans, changedLineSpans,
leftWorkspace, rightWorkSpace, zoomLevel, cancellationToken));
}
