/// <summary>
/// Gets the best match in <see cref="CompletionSet.Completions"/>
/// </summary>
/// <returns></returns>
protected virtual CompletionSelectionStatus GetBestMatch()
{
Debug.Assert(ApplicableTo != null, "You must initialize " + nameof(ApplicableTo) + " before calling this method");
var inputText = SearchText;
var completionFilter = CreateCompletionFilter(inputText);
int matches = 0;
var selector = new BestMatchSelector(inputText);
var mruSelectionCase = default(MruSelection);
var mruSelection = default(MruSelection);
if (inputText.Length > 0)
{
foreach (var completion in Completions)
{
if (!completionFilter.IsMatch(completion))
{
continue;
}
matches++;
selector.Select(completion);
if (completion.DisplayText.StartsWith(searchText, StringComparison.Ordinal))
{
int currentMruIndex = GetMruIndex(completion);
if (mruSelectionCase.Completion == null || currentMruIndex < mruSelectionCase.Index)
{
mruSelectionCase = new MruSelection(completion, currentMruIndex);
}
}
else if (completion.DisplayText.StartsWith(searchText, StringComparison.OrdinalIgnoreCase))
{
int currentMruIndex = GetMruIndex(completion);
if (mruSelection.Completion == null || currentMruIndex < mruSelection.Index)
{
mruSelection = new MruSelection(completion, currentMruIndex);
}
}
}
}
// If it was an exact match, don't use the MRU-selected completion. Eg.
// local 'i' exists, and we previously typed 'int', and we've just typed 'i',
// then select 'i' and not 'int'
var selectedCompletion = mruSelectionCase.Completion ?? mruSelection.Completion ?? selector.Result;
if (selector.Result != null && inputText.Equals(selector.Result.TryGetFilterText(), StringComparison.OrdinalIgnoreCase))
{
selectedCompletion = selector.Result;
}
bool isSelected = selectedCompletion != null;
bool isUnique = matches == 1;
return(new CompletionSelectionStatus(selectedCompletion, isSelected, isUnique));
}
/// <summary>
/// Gets the best match in <see cref="FilteredCollection"/>
/// </summary>
/// <returns></returns>
protected virtual CurrentCompletion GetBestMatch()
{
Debug.Assert(ApplicableTo != null, "You must initialize " + nameof(ApplicableTo) + " before calling this method");
var inputText = ApplicableTo.GetText(ApplicableTo.TextBuffer.CurrentSnapshot);
var completionFilter = CreateCompletionFilter(inputText);
int matches = 0;
var selector = new BestMatchSelector(inputText);
if (inputText.Length > 0)
{
foreach (var completion in filteredCompletions)
{
if (!completionFilter.IsMatch(completion))
{
continue;
}
matches++;
selector.Select(completion);
}
}
bool isSelected = selector.Result != null;
return(new CurrentCompletion(selector.Result, isSelected: isSelected, isUnique: matches == 1));
}
/// <summary>
/// Gets the best match in <see cref="CompletionSet.Completions"/>
/// </summary>
/// <returns></returns>
protected virtual CompletionSelectionStatus GetBestMatch() {
Debug.Assert(ApplicableTo != null, "You must initialize " + nameof(ApplicableTo) + " before calling this method");
var inputText = SearchText;
var completionFilter = CreateCompletionFilter(inputText);
int matches = 0;
var selector = new BestMatchSelector(inputText);
var mruSelectionCase = default(MruSelection);
var mruSelection = default(MruSelection);
if (inputText.Length > 0) {
foreach (var completion in Completions) {
if (!completionFilter.IsMatch(completion))
continue;
matches++;
selector.Select(completion);
if (completion.DisplayText.StartsWith(searchText, StringComparison.Ordinal)) {
int currentMruIndex = GetMruIndex(completion);
if (mruSelectionCase.Completion == null || currentMruIndex < mruSelectionCase.Index)
mruSelectionCase = new MruSelection(completion, currentMruIndex);
}
else if (completion.DisplayText.StartsWith(searchText, StringComparison.OrdinalIgnoreCase)) {
int currentMruIndex = GetMruIndex(completion);
if (mruSelection.Completion == null || currentMruIndex < mruSelection.Index)
mruSelection = new MruSelection(completion, currentMruIndex);
}
}
}
// If it was an exact match, don't use the MRU-selected completion. Eg.
// local 'i' exists, and we previously typed 'int', and we've just typed 'i',
// then select 'i' and not 'int'
var selectedCompletion = mruSelectionCase.Completion ?? mruSelection.Completion ?? selector.Result;
if (selector.Result != null && inputText.Equals(selector.Result.TryGetFilterText(), StringComparison.OrdinalIgnoreCase))
selectedCompletion = selector.Result;
bool isSelected = selectedCompletion != null;
bool isUnique = matches == 1;
return new CompletionSelectionStatus(selectedCompletion, isSelected, isUnique);
}