public async Task <object> CreateDiffViewElementAsync(IDifferenceBuffer diffBuffer)
{
var diffView = _diffFactory.CreateDifferenceView(diffBuffer, _previewRoleSet);
diffView.ViewMode = DifferenceViewMode.Inline;
diffView.InlineView.ZoomLevel *= 1.0;
diffView.InlineView.VisualElement.Focusable = false;
diffView.InlineHost.GetTextViewMargin("deltadifferenceViewerOverview").VisualElement.Visibility = System.Windows.Visibility.Collapsed;
await diffView.SizeToFitAsync().ConfigureAwait(true);
return(diffView.VisualElement);
}
protected override async Task <IWpfDifferenceViewer> CreateDifferenceViewAsync(IDifferenceBuffer diffBuffer, ITextViewRoleSet previewRoleSet, DifferenceViewMode mode, double zoomLevel, CancellationToken cancellationToken)
{
var diffViewer = _differenceViewerService.CreateDifferenceView(diffBuffer, previewRoleSet);
const string DiffOverviewMarginName = "deltadifferenceViewerOverview";
diffViewer.ViewMode = mode;
if (mode == DifferenceViewMode.RightViewOnly)
{
diffViewer.RightView.ZoomLevel *= zoomLevel;
diffViewer.RightHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
else if (mode == DifferenceViewMode.LeftViewOnly)
{
diffViewer.LeftView.ZoomLevel *= zoomLevel;
diffViewer.LeftHost.GetTextViewMargin(DiffOverviewMarginName).VisualElement.Visibility = Visibility.Collapsed;
}
else
{
Contract.ThrowIfFalse(mode == 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;
#pragma warning disable CA2007 // Consider calling ConfigureAwait on the awaited task (containing method uses JTF)
await diffViewer.SizeToFitAsync(ThreadingContext, cancellationToken : cancellationToken);
#pragma warning restore CA2007 // Consider calling ConfigureAwait on the awaited task
return(diffViewer);
}
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(diffViewer);
}
public object CreateDiffView(AnalysisProtocol.ChangeInfo[] changes, PythonTextBufferInfo buffer, int atVersion)
{
if (changes == null || buffer == null || !buffer.LocationTracker.CanTranslateFrom(atVersion))
{
return(null);
}
var snapshot = buffer.CurrentSnapshot;
// Create a copy of the left hand buffer (we're going to remove all of the
// content we don't care about from it).
var leftBuffer = _bufferFactory.CreateTextBuffer(buffer.Buffer.ContentType);
using (var edit = leftBuffer.CreateEdit()) {
edit.Insert(0, snapshot.GetText());
edit.Apply();
}
// create a buffer for the right hand side, copy the original buffer
// into it, and then apply the changes.
var rightBuffer = _bufferFactory.CreateTextBuffer(buffer.Buffer.ContentType);
using (var edit = rightBuffer.CreateEdit()) {
edit.Insert(0, snapshot.GetText());
edit.Apply();
}
var startingVersion = rightBuffer.CurrentSnapshot;
VsProjectAnalyzer.ApplyChanges(changes, rightBuffer, buffer.LocationTracker, atVersion);
var textChanges = startingVersion.Version.Changes;
int minPos = startingVersion.Length, maxPos = 0;
foreach (var change in textChanges)
{
minPos = Math.Min(change.OldPosition, minPos);
maxPos = Math.Max(change.OldPosition, maxPos);
}
if (minPos == startingVersion.Length && maxPos == 0)
{
// no changes? that's weird...
return(null);
}
MinimizeBuffers(leftBuffer, rightBuffer, startingVersion, minPos, maxPos);
// create the difference buffer and view...
var diffBuffer = _diffBufferFactory.CreateDifferenceBuffer(leftBuffer, rightBuffer);
var diffView = _diffFactory.CreateDifferenceView(diffBuffer, _previewRoleSet);
diffView.ViewMode = DifferenceViewMode.Inline;
diffView.InlineView.ZoomLevel *= .75;
diffView.InlineView.VisualElement.Focusable = false;
diffView.InlineHost.GetTextViewMargin("deltadifferenceViewerOverview").VisualElement.Visibility = System.Windows.Visibility.Collapsed;
// Reduce the size of the buffer once it's ready
diffView.DifferenceBuffer.SnapshotDifferenceChanged += (sender, args) => {
diffView.InlineView.DisplayTextLineContainingBufferPosition(
new SnapshotPoint(diffView.DifferenceBuffer.CurrentInlineBufferSnapshot, 0),
0.0, ViewRelativePosition.Top, double.MaxValue, double.MaxValue
);
var width = Math.Max(diffView.InlineView.MaxTextRightCoordinate * (diffView.InlineView.ZoomLevel / 100), 400); // Width of the widest line.
var height = diffView.InlineView.LineHeight * (diffView.InlineView.ZoomLevel / 100) * // Height of each line.
diffView.DifferenceBuffer.CurrentInlineBufferSnapshot.LineCount;
diffView.VisualElement.Width = width;
diffView.VisualElement.Height = height;
};
return(diffView.VisualElement);
}
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) =>
{
// Workaround Editor bug. The editor has an issue where they sometimes crash when
// trying to apply changes to projection buffer. So, when the user actually invokes
// a SuggestedAction we may then edit a text buffer, which the editor will then
// try to propagate through the projections we have here over that buffer. To ensure
// that that doesn't happen, we clear out the projections first so that this crash
// won't happen.
originalBuffer.DeleteSpans(0, originalBuffer.CurrentSnapshot.SpanCount);
changedBuffer.DeleteSpans(0, changedBuffer.CurrentSnapshot.SpanCount);
leftWorkspace?.Dispose();
leftWorkspace = 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(ThreadingContext).ConfigureAwait(true);
leftWorkspace?.EnableDiagnostic();
rightWorkspace?.EnableDiagnostic();
return(new DifferenceViewerPreview(diffViewer));
}
private IWpfDifferenceViewer CreateNewDifferenceViewer(PreviewWorkspace leftWorkspace, PreviewWorkspace rightWorkspace,
IProjectionBuffer originalBuffer, IProjectionBuffer changedBuffer, double zoomLevel)
{
// 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;
diffViewer.SizeToFit();
if (leftWorkspace != null)
{
leftWorkspace.EnableDiagnostic();
}
if (rightWorkspace != null)
{
rightWorkspace.EnableDiagnostic();
}
return(diffViewer);
}
