private bool IsHardSelection(
Model model,
CompletionItem bestFilterMatch,
ITextSnapshot textSnapshot,
CompletionRules completionRules,
CompletionTriggerInfo triggerInfo,
CompletionFilterReason reason)
{
if (model.Builder != null)
{
return bestFilterMatch != null && bestFilterMatch.DisplayText == model.Builder.DisplayText;
}
if (bestFilterMatch == null || model.UseSuggestionCompletionMode)
{
return false;
}
// We don't have a builder and we have a best match. Normally this will be hard
// selected, except for a few cases. Specifically, if no filter text has been
// provided, and this is not a preselect match then we will soft select it. This
// happens when the completion list comes up implicitly and there is something in
// the MRU list. In this case we do want to select it, but not with a hard
// selection. Otherwise you can end up with the following problem:
//
// dim i as integer =<space>
//
// Completion will comes up after = with 'integer' selected (Because of MRU). We do
// not want 'space' to commit this.
var viewSpan = model.GetSubjectBufferFilterSpanInViewBuffer(bestFilterMatch.FilterSpan);
var fullFilterText = model.GetCurrentTextInSnapshot(viewSpan, textSnapshot, endPoint: null);
var shouldSoftSelect = completionRules.ShouldSoftSelectItem(GetExternallyUsableCompletionItem(bestFilterMatch), fullFilterText, triggerInfo);
if (shouldSoftSelect)
{
return false;
}
// If the user moved the caret left after they started typing, the 'best' match may not match at all
// against the full text span that this item would be replacing.
if (!completionRules.MatchesFilterText(bestFilterMatch, fullFilterText, triggerInfo, reason))
{
return false;
}
// There was either filter text, or this was a preselect match. In either case, we
// can hard select this.
return true;
}
