internal override void OnModelUpdated(Model modelOpt, bool updateController)
{
AssertIsForeground();
if (updateController)
{
if (modelOpt == null)
{
this.StopModelComputation();
}
else
{
var triggerSpan = modelOpt.GetCurrentSpanInView(this.TextView.TextSnapshot);
// We want the span to actually only go up to the caret. So get the expected span
// and then update its end point accordingly.
var updatedSpan = new SnapshotSpan(triggerSpan.Snapshot, Span.FromBounds(
triggerSpan.Start,
Math.Max(Math.Min(triggerSpan.End, GetCaretPointInViewBuffer().Position), triggerSpan.Start)));
var trackingSpan = updatedSpan.CreateTrackingSpan(SpanTrackingMode.EdgeInclusive);
this.sessionOpt.PresenterSession.PresentItems(
trackingSpan, modelOpt.Items, modelOpt.SelectedItem, modelOpt.SelectedParameter);
}
}
ModelUpdated?.Invoke(this, new ModelUpdatedEventsArgs(modelOpt));
}
private ITextBuffer CreateProjectionBufferForBlockHeaders()
{
// We want to create a projection buffer that will show the block tags like so:
//
// namespace N
// class C
// public void M()
//
// To do this, we grab the 'header' part of each block span and stich them
// all together one after the other.
//
// We consider hte 'header' to be from the start of the line containing the
// block all the way to the end of the line, or the start of the collapsed
// block region (whichever is closer). That way, if you have multi-line
// statement start (for example, with a multi-line if-expression) we'll only
// take the first line. In the case where we're cutting things off, we'll
// put in a ... to indicate as such.
var blockTags = GetBlockTags();
var textSnapshot = blockTags[0].StatementSpan.Snapshot;
// The list of mapping spans, ...'s and newlines that we'll build the
// projection buffer out of.
var objects = new List <object>();
for (var i = 0; i < blockTags.Count; i++)
{
if (i > 0)
{
objects.Add("\r\n");
}
var blockTag = blockTags[i];
var fullStatementSpan = blockTag.StatementSpan;
var collapseSpan = blockTag.Span;
var statementLine = textSnapshot.GetLineFromPosition(blockTag.StatementSpan.Start);
var lineStart = statementLine.Start.Position;
var lineEnd = statementLine.End.Position;
var headerSpan = new SnapshotSpan(textSnapshot, Span.FromBounds(lineStart, lineEnd));
var mappingSpan = headerSpan.CreateTrackingSpan(SpanTrackingMode.EdgeExclusive);
objects.Add(mappingSpan);
if (statementLine.End.Position < collapseSpan.Start)
{
// If we had to cut off the line, then add a ... to indicate as such.
objects.Add("...");
}
}
return(_provider._projectionBufferFactoryService.CreateProjectionBuffer(
null, objects, ProjectionBufferOptions.None));
}
private static IProjectionBuffer CreateProjectionBuffer(
IProjectionBufferFactoryService factoryService,
IContentTypeRegistryService registryService,
IEditorOptions editorOptions,
ITextSnapshot snapshot,
string separator,
object?suffixOpt,
bool trim,
params LineSpan[] exposedLineSpans
)
{
var spans = new List <object>();
if (exposedLineSpans.Length > 0)
{
if (exposedLineSpans[0].Start > 0 && !string.IsNullOrEmpty(separator))
{
spans.Add(separator);
spans.Add(editorOptions.GetNewLineCharacter());
}
var snapshotSpanRanges = CreateSnapshotSpanRanges(snapshot, exposedLineSpans);
var indentColumn = trim
? DetermineIndentationColumn(editorOptions, snapshotSpanRanges.Flatten())
: 0;
foreach (var snapshotSpanRange in snapshotSpanRanges)
{
foreach (var snapshotSpan in snapshotSpanRange)
{
var line = snapshotSpan.Snapshot.GetLineFromPosition(snapshotSpan.Start);
var indentPosition =
line.GetLineOffsetFromColumn(indentColumn, editorOptions) + line.Start;
var mappedSpan = new SnapshotSpan(
snapshotSpan.Snapshot,
Span.FromBounds(indentPosition, snapshotSpan.End)
);
var trackingSpan = mappedSpan.CreateTrackingSpan(
SpanTrackingMode.EdgeExclusive
);
spans.Add(trackingSpan);
// Add a newline between every line.
if (snapshotSpan != snapshotSpanRange.Last())
{
spans.Add(editorOptions.GetNewLineCharacter());
}
}
// Add a separator between every set of lines.
if (snapshotSpanRange != snapshotSpanRanges.Last())
{
spans.Add(editorOptions.GetNewLineCharacter());
spans.Add(separator);
spans.Add(editorOptions.GetNewLineCharacter());
}
}
if (
snapshot.GetLineNumberFromPosition(snapshotSpanRanges.Last().Last().End)
< snapshot.LineCount - 1
)
{
spans.Add(editorOptions.GetNewLineCharacter());
spans.Add(separator);
}
}
if (suffixOpt != null)
{
if (spans.Count >= 0)
{
if (!separator.Equals(spans.Last()))
{
spans.Add(editorOptions.GetNewLineCharacter());
spans.Add(separator);
}
spans.Add(editorOptions.GetNewLineCharacter());
}
spans.Add(suffixOpt);
}
return(factoryService.CreateProjectionBuffer(
projectionEditResolver: null,
sourceSpans: spans,
options: ProjectionBufferOptions.None,
contentType: registryService.GetContentType(RoslynPreviewContentType)
));
}
private static IProjectionBuffer CreateProjectionBuffer(
IProjectionBufferFactoryService factoryService,
IContentTypeRegistryService registryService,
IEditorOptions editorOptions,
ITextSnapshot snapshot,
string separator,
object suffixOpt,
bool trim,
params LineSpan[] exposedLineSpans)
{
var spans = new List<object>();
if (exposedLineSpans.Length > 0)
{
if (exposedLineSpans[0].Start > 0 && !string.IsNullOrEmpty(separator))
{
spans.Add(separator);
spans.Add(editorOptions.GetNewLineCharacter());
}
var snapshotSpanRanges = CreateSnapshotSpanRanges(snapshot, exposedLineSpans);
var indentColumn = trim
? DetermineIndentationColumn(editorOptions, snapshotSpanRanges.Flatten())
: 0;
foreach (var snapshotSpanRange in snapshotSpanRanges)
{
foreach (var snapshotSpan in snapshotSpanRange)
{
var line = snapshotSpan.Snapshot.GetLineFromPosition(snapshotSpan.Start);
var indentPosition = line.GetLineOffsetFromColumn(indentColumn, editorOptions) + line.Start;
var mappedSpan = new SnapshotSpan(snapshotSpan.Snapshot,
Span.FromBounds(indentPosition, snapshotSpan.End));
var trackingSpan = mappedSpan.CreateTrackingSpan(SpanTrackingMode.EdgeExclusive);
spans.Add(trackingSpan);
// Add a newline between every line.
if (snapshotSpan != snapshotSpanRange.Last())
{
spans.Add(editorOptions.GetNewLineCharacter());
}
}
// Add a separator between every set of lines.
if (snapshotSpanRange != snapshotSpanRanges.Last())
{
spans.Add(editorOptions.GetNewLineCharacter());
spans.Add(separator);
spans.Add(editorOptions.GetNewLineCharacter());
}
}
if (snapshot.GetLineNumberFromPosition(snapshotSpanRanges.Last().Last().End) < snapshot.LineCount - 1)
{
spans.Add(editorOptions.GetNewLineCharacter());
spans.Add(separator);
}
}
if (suffixOpt != null)
{
if (spans.Count >= 0)
{
if (!separator.Equals(spans.Last()))
{
spans.Add(editorOptions.GetNewLineCharacter());
spans.Add(separator);
}
spans.Add(editorOptions.GetNewLineCharacter());
}
spans.Add(suffixOpt);
}
return factoryService.CreateProjectionBuffer(
projectionEditResolver: null,
sourceSpans: spans,
options: ProjectionBufferOptions.None,
contentType: registryService.GetContentType(ShaderPreviewContentType));
}
private ITextBuffer CreateProjectionBufferForBlockHeaders()
{
// We want to create a projection buffer that will show the block tags like so:
//
// namespace N
// class C
// public void M()
//
// To do this, we grab the 'header' part of each block span and stich them
// all together one after the other.
//
// We consider hte 'header' to be from the start of the line containing the
// block all the way to the end of the line, or the start of the collapsed
// block region (whichever is closer). That way, if you have multi-line
// statement start (for example, with a multi-line if-expression) we'll only
// take the first line. In the case where we're cutting things off, we'll
// put in a ... to indicate as such.
var blockTags = GetBlockTags();
var textSnapshot = blockTags[0].StatementSpan.Snapshot;
// The list of mapping spans, ...'s and newlines that we'll build the
// projection buffer out of.
var objects = new List<object>();
for (var i = 0; i < blockTags.Count; i++)
{
var blockTag = blockTags[i];
var fullStatementSpan = blockTag.StatementSpan;
if (blockTag.Parent != null &&
textSnapshot.AreOnSameLine(fullStatementSpan.Start, blockTag.Parent.StatementSpan.Start))
{
// Ignore block tags on the same line as their parent. We'll have already included
// the contents of the line when we added the parent tag, and the editor will crash
// if we create overlapping spans in the projection buffer.
continue;
}
if (i > 0)
{
objects.Add("\r\n");
}
var statementLine = textSnapshot.GetLineFromPosition(fullStatementSpan.Start);
var lineStart = statementLine.Start.Position;
var lineEnd = statementLine.End.Position;
var headerSpan = new SnapshotSpan(textSnapshot, Span.FromBounds(lineStart, lineEnd));
var mappingSpan = headerSpan.CreateTrackingSpan(SpanTrackingMode.EdgeExclusive);
objects.Add(mappingSpan);
if (lineEnd < blockTag.Span.Start)
{
// If we had to cut off the line, then add a ... to indicate as such.
objects.Add("...");
}
}
return _provider._projectionBufferFactoryService.CreateProjectionBuffer(
null, objects, ProjectionBufferOptions.None);
}
