protected sealed override ITaggerEventSource CreateEventSource(ITextView textViewOpt, ITextBuffer subjectBuffer)
{
// We listen to the following events:
// 1) Text changes. These can obviously affect outlining, so we need to recompute when
// we hear about them.
// 2) Parse option changes. These can affect outlining when, for example, we change from
// DEBUG to RELEASE (affecting the inactive/active regions).
// 3) When we hear about a workspace being registered. Outlining may run before a
// we even know about a workspace. This can happen, for example, in the TypeScript
// case. With TypeScript a file is opened, but the workspace is not generated until
// some time later when they have examined the file system. As such, initially,
// the file will not have outline spans. When the workspace is created, we want to
// then produce the right outlining spans.
return(TaggerEventSources.Compose(
TaggerEventSources.OnTextChanged(subjectBuffer, TaggerDelay.OnIdle),
TaggerEventSources.OnParseOptionChanged(subjectBuffer, TaggerDelay.OnIdle),
TaggerEventSources.OnWorkspaceRegistrationChanged(subjectBuffer, TaggerDelay.OnIdle),
TaggerEventSources.OnOptionChanged(subjectBuffer, BlockStructureOptions.ShowBlockStructureGuidesForCodeLevelConstructs, TaggerDelay.NearImmediate),
TaggerEventSources.OnOptionChanged(subjectBuffer, BlockStructureOptions.ShowBlockStructureGuidesForDeclarationLevelConstructs, TaggerDelay.NearImmediate),
TaggerEventSources.OnOptionChanged(subjectBuffer, BlockStructureOptions.ShowBlockStructureGuidesForCommentsAndPreprocessorRegions, TaggerDelay.NearImmediate),
TaggerEventSources.OnOptionChanged(subjectBuffer, BlockStructureOptions.ShowOutliningForCodeLevelConstructs, TaggerDelay.NearImmediate),
TaggerEventSources.OnOptionChanged(subjectBuffer, BlockStructureOptions.ShowOutliningForDeclarationLevelConstructs, TaggerDelay.NearImmediate),
TaggerEventSources.OnOptionChanged(subjectBuffer, BlockStructureOptions.ShowOutliningForCommentsAndPreprocessorRegions, TaggerDelay.NearImmediate),
TaggerEventSources.OnOptionChanged(subjectBuffer, BlockStructureOptions.CollapseRegionsWhenCollapsingToDefinitions, TaggerDelay.NearImmediate)));
}
protected override ITaggerEventSource CreateEventSource(ITextView textViewOpt, ITextBuffer subjectBuffer)
{
return(TaggerEventSources.Compose(
TaggerEventSources.OnDocumentActiveContextChanged(subjectBuffer, TaggerDelay.Medium),
TaggerEventSources.OnWorkspaceRegistrationChanged(subjectBuffer, TaggerDelay.Medium),
TaggerEventSources.OnDiagnosticsChanged(subjectBuffer, _diagnosticService, TaggerDelay.Short)));
}
protected override ITaggerEventSource CreateEventSource(ITextView textViewOpt, ITextBuffer subjectBuffer)
{
// We act as a source of events ourselves. When the diagnostics service tells
// us about new diagnostics, we'll use that to kick of the asynchronous tagging
// work.
return(TaggerEventSources.Compose(
TaggerEventSources.OnWorkspaceRegistrationChanged(subjectBuffer, TaggerDelay.Medium),
this));
}
protected override ITaggerEventSource CreateEventSource(ITextView textViewOpt, ITextBuffer subjectBuffer)
{
// We act as a source of events ourselves. When the diagnostics service tells
// us about new diagnostics, we'll use that to kick of the asynchronous tagging
// work.
var eventSource = TaggerEventSources.Compose(
TaggerEventSources.OnWorkspaceRegistrationChanged(subjectBuffer, TaggerDelay.Medium),
this);
// See if our owner has any additional events for us to listen to.
var ownerEventSource = _owner.GetTaggerEventSource();
return(ownerEventSource == null
? eventSource
: TaggerEventSources.Compose(ownerEventSource, eventSource));
}
