public override void SelectBestMatch()
{
ITextSnapshot snapshot = ApplicableTo.TextBuffer.CurrentSnapshot;
string typedText = ApplicableTo.GetText(snapshot).Trim();
if (string.IsNullOrWhiteSpace(typedText))
{
if (_filteredCompletions.Any())
{
SelectionStatus = new CompletionSelectionStatus(_filteredCompletions.First(), true, true);
}
return;
}
foreach (Completion comp in _filteredCompletions)
{
int index = comp.DisplayText.IndexOf(typedText, StringComparison.OrdinalIgnoreCase);
if (index == 0)
{
SelectionStatus = new CompletionSelectionStatus(comp, true, true);
return;
}
else if (index > -1)
{
SelectionStatus = new CompletionSelectionStatus(comp, true, true);
return;
}
}
}
public override void SelectBestMatch()
{
var text = ApplicableTo.GetText(ApplicableTo.TextBuffer.CurrentSnapshot);
if (string.IsNullOrWhiteSpace(text))
{
SelectionStatus = new CompletionSelectionStatus(null, false, false);
return;
}
Microsoft.VisualStudio.Language.Intellisense.Completion bestMatch = null;
var bestValue = 0;
var isUnique = true;
foreach (var completion in Completions)
{
int value = CompareCompletionText(completion.DisplayText, text);
if (bestMatch == null || value > bestValue)
{
bestMatch = completion;
bestValue = value;
isUnique = true;
}
else if (value == bestValue)
{
isUnique = false;
}
}
SelectionStatus = new CompletionSelectionStatus(bestMatch, bestValue > 0, isUnique);
}
/// <summary>
/// Selects the best match to what the user typed
/// </summary>
/// <remarks>
/// The steps to determine the best match:
/// 1. Check if there is a precise match in the builders list
/// 2. If not - check if there is a precise match in the completions list
/// 3. If not - look up the closest match in the completions list
/// </remarks>
public override void SelectBestMatch()
{
string prefix = getPrefix();
// precise match to a completion builder
Completion completion = CompletionBuilders.FirstOrDefault(c => c.DisplayText.CompareTo(prefix) == 0);
// if none - precise match to a completion
if (completion == null)
{
completion = Completions.FirstOrDefault(c => c.DisplayText.CompareTo(prefix) == 0);
}
// if none - position the completion list
if (completion == null)
{
completion = Completions.FirstOrDefault(c => c.DisplayText.CompareTo(prefix) >= 0);
}
if (completion != null)
{
SelectionStatus = new CompletionSelectionStatus(completion,
completion.DisplayText == prefix,
true
);
}
}
private TabCompleteSession CreateTabSessionWithNoSelectedCompletion(CompletionSelectionStatus selectionStatus)
{
_mockedScript = String.Format(TestScript, String.Empty);
_mockedCaret = TestStartPoint;
return(new TabCompleteSession(TestCompletions, selectionStatus, TestStartPoint));
}
public override void SelectBestMatch()
{
var text = ApplicableTo.GetText(ApplicableTo.TextBuffer.CurrentSnapshot);
if (string.IsNullOrWhiteSpace(text))
{
SelectionStatus = new CompletionSelectionStatus(null, false, false);
return;
}
Microsoft.VisualStudio.Language.Intellisense.Completion bestMatch = null;
var bestValue = 0;
var isUnique = true;
foreach (var completion in Completions)
{
int value = CompareCompletionText(completion.DisplayText, text);
if (bestMatch == null || value > bestValue)
{
bestMatch = completion;
bestValue = value;
isUnique = true;
}
else if (value == bestValue)
{
isUnique = false;
}
}
SelectionStatus = new CompletionSelectionStatus(bestMatch, bestValue > 0, isUnique);
}
public void SetCompletionItems(
IList <RoslynCompletionItem> completionItems,
RoslynCompletionItem selectedItem,
RoslynCompletionItem suggestionModeItem,
bool suggestionMode,
bool isSoftSelected,
ImmutableArray <CompletionItemFilter> completionItemFilters,
string filterText)
{
CompletionPresenterSession.AssertIsForeground();
// Initialize the completion map to a reasonable default initial size (+1 for the builder)
CompletionItemMap ??= new Dictionary <RoslynCompletionItem, VSCompletion>(completionItems.Count + 1);
FilterText = filterText;
SuggestionModeItem = suggestionModeItem;
// If more than one filter was provided, then present it to the user.
if (_showFilters && _filters == null && completionItemFilters.Length > 1)
{
_filters = completionItemFilters.Select(f => new IntellisenseFilter2(this, f))
.ToArray();
}
CreateCompletionListBuilder(selectedItem, suggestionModeItem, suggestionMode);
CreateNormalCompletionListItems(completionItems);
var selectedCompletionItem = selectedItem != null?GetVSCompletion(selectedItem) : null;
SelectionStatus = new CompletionSelectionStatus(
selectedCompletionItem,
isSelected: !isSoftSelected, isUnique: selectedCompletionItem != null);
}
public override void Filter()
{
try {
var text = ApplicableTo.GetText(ApplicableTo.TextBuffer.CurrentSnapshot);
text = text.TrimStart('.').Trim(' ');
//if (IsNullOrWhiteSpace(text)) {
// _session.Dismiss();
// return;
//}
var orderedByDistance = _items.Where(c => ContainsAllSymbols(text, c.InsertionText))
.OfType <MyCompletion>()
.OrderBy(c => {
var distance = GetSymbolDistance(c, text);
c.OrderIndex = distance;
return(distance);
})
.Distinct(new CompletionEqualityComparer());
var zeroIndex = new List <Completion>();
var properties = new List <Completion>();
var nodes = new List <Completion>();
var other = new List <Completion>();
foreach (var item in orderedByDistance)
{
if (item.OrderIndex == 0)
{
zeroIndex.Add(item);
}
else if (item.CompletionType == CompletionType.Property)
{
properties.Add(item);
}
else if (item.CompletionType == CompletionType.Node)
{
nodes.Add(item);
}
else
{
other.Add(item);
}
}
WritableCompletions.Clear();
WritableCompletions.AddRange(zeroIndex.Concat(properties)
.Concat(nodes)
.Concat(other)
.ToList());
if (WritableCompletions.Count > 0)
{
SelectionStatus = new CompletionSelectionStatus(WritableCompletions[0], true, true);
}
} catch (Exception e) {
Debug.WriteLine("Filter failed");
Debug.WriteLine(e.ToString());
}
}
public override void SelectBestMatch()
{
ITextSnapshot snapshot = ApplicableTo.TextBuffer.CurrentSnapshot;
string typedText = ApplicableTo.GetText(snapshot).Trim();
if (string.IsNullOrWhiteSpace(typedText))
{
if (_filteredCompletions.Any())
SelectionStatus = new CompletionSelectionStatus(_filteredCompletions.First(), true, true);
return;
}
foreach (Completion comp in _filteredCompletions)
{
int index = comp.DisplayText.IndexOf(typedText, StringComparison.OrdinalIgnoreCase);
if (index == 0)
{
SelectionStatus = new CompletionSelectionStatus(comp, true, true);
return;
}
else if (index > -1)
{
SelectionStatus = new CompletionSelectionStatus(comp, true, true);
return;
}
}
}
private bool HandleCompletion()
{
ReadOnlyCollection <ICompletionSession> completionSessions = _completionBroker.GetSessions(_textView);
if (completionSessions.Count == 0)
{
return(false);
}
ICompletionSession completionSession = completionSessions[0];
if (completionSession.IsDismissed)
{
return(false);
}
CompletionSet completionSet = completionSession.SelectedCompletionSet;
CompletionSelectionStatus selectionStatus = completionSet.SelectionStatus;
if (selectionStatus.Completion.GetType().Name == "CustomCommitCompletion")
{
// let Roslyn handle its own completions
return(false);
}
completionSession.Commit();
return(true);
}
public override void SelectBestMatch()
{
var text = FilterSpan.GetText(FilterSpan.TextBuffer.CurrentSnapshot);
if (text.Length == 0)
{
SelectionStatus = new CompletionSelectionStatus(null, false, false);
return;
}
var num = int.MaxValue;
Completion completion = null;
foreach (var current in Completions)
{
var startIndex = current.DisplayText.StartsWith(InitialApplicableTo, StringComparison.OrdinalIgnoreCase) ? this.InitialApplicableTo.Length : 0;
var num2 = current.DisplayText.IndexOf(text, startIndex, StringComparison.OrdinalIgnoreCase);
if (num2 != -1 && num2 < num)
{
completion = current;
num = num2;
}
}
if (completion == null)
{
SelectionStatus = new CompletionSelectionStatus(null, false, false);
return;
}
SelectionStatus = new CompletionSelectionStatus(completion, true, true);
}
/// <summary>
/// Determines and selects the only match in the completion set.
/// This ignores the user's filtering preferences.
/// </summary>
/// <returns>
/// True if a match is found and selected; otherwise, false if there
/// is no single match in the completion set.
/// </returns>
public bool SelectSingleBest()
{
var text = ApplicableTo.GetText(ApplicableTo.TextBuffer.CurrentSnapshot);
Completion bestMatch = null;
// Using the _completions field to search through all completions
// and ignore filtering settings.
foreach (var comp in _completions)
{
if (_comparer.IsCandidateMatch(comp.DisplayText, text))
{
if (bestMatch == null)
{
bestMatch = comp;
}
else
{
return(false);
}
}
}
if (bestMatch != null)
{
SelectionStatus = new CompletionSelectionStatus(bestMatch,
isSelected: true,
isUnique: true);
return(true);
}
else
{
return(false);
}
}
public static bool IsHollowSelected(this CompletionSelectionStatus status)
{
if (!CompletionSessionExtensions.IsSelected(status))
{
return(status.SelectedCompletion != null);
}
return(false);
}
/// <summary>
/// Determines the best match in the completion set.
/// </summary>
public override void SelectBestMatch()
{
if (_completions == null)
{
return;
}
var text = ApplicableTo.GetText(ApplicableTo.TextBuffer.CurrentSnapshot);
Completion bestMatch = _previousSelection;
int bestValue = 0;
bool isUnique = true;
bool allowSelect = true;
// Using the Completions property to only search through visible
// completions.
foreach (var comp in Completions)
{
int value = _comparer.GetSortKey(_matchInsertionText ? comp.InsertionText : comp.DisplayText, text);
if (bestMatch == null || value > bestValue)
{
bestMatch = comp;
bestValue = value;
isUnique = true;
}
else if (value == bestValue)
{
isUnique = false;
}
}
if (!CommitByDefault)
{
allowSelect = false;
isUnique = false;
}
if (((DynamicallyVisibleCompletion)bestMatch).Visible)
{
SelectionStatus = new CompletionSelectionStatus(
bestMatch,
isSelected: allowSelect && bestValue > 0,
isUnique: isUnique
);
}
else
{
SelectionStatus = new CompletionSelectionStatus(
null,
isSelected: false,
isUnique: false
);
}
_previousSelection = bestMatch;
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
CompletionSelectionStatus completionSelectionStatu = value as CompletionSelectionStatus;
if (completionSelectionStatu == null)
{
return(false);
}
return((completionSelectionStatu.SelectionOptions & CompletionSelectionOptions.Selected) == CompletionSelectionOptions.Selected);
}
private bool HandleCompletion(char commitCharacter)
{
ReadOnlyCollection <ICompletionSession> completionSessions = _completionBroker.GetSessions(_textView);
if (completionSessions.Count == 0)
{
return(false);
}
ICompletionSession completionSession = completionSessions[0];
if (completionSession.IsDismissed)
{
return(false);
}
CompletionSet completionSet = completionSession.SelectedCompletionSet;
CompletionSelectionStatus selectionStatus = completionSet.SelectionStatus;
if (selectionStatus.Completion.GetType().Name == "CustomCommitCompletion")
{
// let Roslyn handle its own completions
return(false);
}
string insertionText = selectionStatus.Completion.InsertionText;
completionSession.Commit();
bool passCharacterToEditor;
switch (commitCharacter)
{
case '/':
case '>':
// if the insertion text doesn't end with '>' or '/>', allow the user to complete the item and insert
// the closing element character by typing '/' or '>'.
passCharacterToEditor = !insertionText.EndsWith(">");
break;
case ' ':
// only pass the space through if the completion item doesn't contain any replaceable elements
passCharacterToEditor = insertionText.IndexOf('\xFF') < 0;
break;
case '\n':
case '\t':
default:
// these items trigger completion, but aren't written to the output
passCharacterToEditor = false;
break;
}
return(!passCharacterToEditor);
}
/// <summary>
/// Determines whether two instances of <see cref="CompletionSelectionStatus"/> are the same.
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public override bool Equals(object obj)
{
CompletionSelectionStatus otherStatus = obj as CompletionSelectionStatus;
if (otherStatus != null)
{
return(this == otherStatus);
}
return(false);
}
/// <summary>
/// Only commit the completion selection if there is a unique choice in the list
/// </summary>
protected void CommitUniqueCompletionSession()
{
if (HasActiveCompletionSession)
{
CompletionSelectionStatus status = CompletionSession.SelectedCompletionSet.SelectionStatus;
if (status.IsSelected && status.IsUnique)
{
CommitCompletionSession();
}
}
}
/// <summary>
/// Creates and initializes the TabCompleteSession
/// </summary>
/// <param name="completions">The completions</param>
/// <param name="selectionStatus">The selection status</param>
/// <param name="startPoint">The start point of the completions</param>
public TabCompleteSession(IList <Completion> completions, CompletionSelectionStatus selectionStatus, int startPoint)
{
_completions = completions;
_startPoint = startPoint;
if (_completions != null && selectionStatus != null && selectionStatus.IsSelected)
{
_index = _completions.IndexOf(selectionStatus.Completion);
}
else
{
_index = -1;
}
}
public override void SelectBestMatch()
{
ITextSnapshot snapshot = ApplicableTo.TextBuffer.CurrentSnapshot;
string text = ApplicableTo.GetText(snapshot);
if (!String.IsNullOrEmpty(text))
{
var completion = Completions.
FirstOrDefault(c => !String.IsNullOrEmpty(c.DisplayText) &&
c.DisplayText.IndexOf(text, StringComparison.OrdinalIgnoreCase) != -1);
if (completion != null)
SelectionStatus = new CompletionSelectionStatus(completion, true, false);
}
}
private CodeAidContext CreateCodeAidContext()
{
ITextSnapshot currentSnapshot = this.textView.TextBuffer.CurrentSnapshot;
CompletionSelectionStatus status = this.activeSession != null ? this.activeSession.SelectionStatus : (CompletionSelectionStatus)null;
ICompletion completion1 = status == null || !CompletionSessionExtensions.IsSelected(status) ? (ICompletion)null : this.activeSession.SelectionStatus.SelectedCompletion;
ICompletion completion2 = status == null || !CompletionSessionExtensions.IsHollowSelected(status) ? (ICompletion)null : this.activeSession.SelectionStatus.SelectedCompletion;
int position = this.LeftmostTextViewSelection();
return(new CodeAidContext()
{
CurrentPosition = new SnapshotPoint(currentSnapshot, position),
SelectionSpan = this.textView.Selection.SelectionSpan,
SessionStartingPosition = this.activeSessionStartPoint,
SessionSelectedCompletion = completion1,
SessionHollowSelectedCompletion = completion2
});
}
/// <summary>
/// Determines and selects the only match in the completion set.
/// This ignores the user's filtering preferences.
/// </summary>
/// <returns>
/// True if a match is found and selected; otherwise, false if there
/// is no single match in the completion set.
/// </returns>
public bool SelectSingleBest()
{
if (_completions == null)
{
return(false);
}
var text = ApplicableTo.GetText(ApplicableTo.TextBuffer.CurrentSnapshot);
Completion bestMatch = null;
// Unfilter and then search all completions
FilterToPredicate(_ => true);
foreach (var comp in _completions)
{
if (_comparer.IsCandidateMatch(_matchInsertionText ? comp.InsertionText : comp.DisplayText, text))
{
if (bestMatch == null)
{
bestMatch = comp;
}
else
{
return(false);
}
}
}
try {
if (bestMatch != null)
{
SelectionStatus = new CompletionSelectionStatus(
bestMatch,
isSelected: true,
isUnique: true
);
return(true);
}
} catch (Exception ex) when(!ex.IsCriticalException())
{
ex.ReportUnhandledException(null, GetType(), allowUI: false);
}
return(false);
}
public override void SelectBestMatch()
{
_typed = ApplicableTo.GetText(ApplicableTo.TextBuffer.CurrentSnapshot);
CustomFilter();
IOrderedEnumerable <Completion> ordered = currentCompletions.OrderByDescending(c => GetHighlightedSpansInDisplayText(c.DisplayText).Sum(s => s.Length));
if (ordered.Any())
{
int count = ordered.Count();
SelectionStatus = new CompletionSelectionStatus(ordered.First(), count == 1, count == 1);
}
else
{
SelectBestMatch(CompletionMatchType.MatchDisplayText, false);
}
}
public void SetCompletionItems(
IList <CompletionItem> completionItems,
CompletionItem selectedItem,
CompletionItem suggestionModeItem,
bool suggestionMode,
bool isSoftSelected,
ImmutableArray <CompletionItemFilter> completionItemFilters,
string filterText)
{
_foregroundThread.AssertIsForeground();
foreach (var item in completionItems)
{
if (!_displayTextToBoldingTextMap.ContainsKey(item.DisplayText))
{
_displayTextToBoldingTextMap.Add(item.DisplayText, CompletionHelper.GetDisplayTextForMatching(item));
}
}
// Initialize the completion map to a reasonable default initial size (+1 for the builder)
CompletionItemMap = CompletionItemMap ?? new Dictionary <CompletionItem, VSCompletion>(completionItems.Count + 1);
FilterText = filterText;
SuggestionModeItem = suggestionModeItem;
// If more than one filter was provided, then present it to the user.
if (_showFilters && _filters == null && completionItemFilters.Length > 1)
{
_filters = completionItemFilters.Select(f => new IntellisenseFilter2(this, f))
.ToArray();
}
CreateCompletionListBuilder(selectedItem, suggestionModeItem, suggestionMode);
CreateNormalCompletionListItems(completionItems);
var selectedCompletionItem = selectedItem != null?GetVSCompletion(selectedItem) : null;
SelectionStatus = new CompletionSelectionStatus(
selectedCompletionItem,
isSelected: !isSoftSelected, isUnique: selectedCompletionItem != null);
}
public void SetCompletionItems(
IList <CompletionItem> completionItems,
CompletionItem selectedItem,
CompletionItem suggestionModeItem,
bool suggestionMode,
bool isSoftSelected,
ImmutableArray <CompletionItemFilter> completionItemFilters,
string filterText)
{
// Initialize the completion map to a reasonable default initial size (+1 for the builder)
CompletionItemMap = CompletionItemMap ?? new Dictionary <CompletionItem, VSCompletion>(completionItems.Count + 1);
FilterText = filterText;
SuggestionModeItem = suggestionModeItem;
CreateCompletionListBuilder(selectedItem, suggestionModeItem, suggestionMode);
CreateNormalCompletionListItems(completionItems);
var selectedCompletionItem = selectedItem != null?GetVSCompletion(selectedItem) : null;
SelectionStatus = new CompletionSelectionStatus(
selectedCompletionItem,
isSelected: !isSoftSelected, isUnique: selectedCompletionItem != null);
}
protected virtual bool CanCommitCompletionSession(char typedCharacter)
{
if (!HasActiveCompletionSession)
{
return(false);
}
CompletionSet completionSet = CompletionSession.SelectedCompletionSet;
CompletionSelectionStatus status = completionSet.SelectionStatus;
if (status.Completion == null)
{
return(false);
}
if (status.IsSelected)
{
return(true);
}
// Tab character commits any entry, whether it's really selected or not.
// However, it should not complete if entry doesn't start with the text
// typed so far. Otherwise it interferes with snippet insertion on Tab-Tab.
if (typedCharacter == '\t')
{
try {
var snapshot = completionSet.ApplicableTo.TextBuffer.CurrentSnapshot;
var span = completionSet.ApplicableTo.GetSpan(snapshot);
if (status.Completion.InsertionText.StartsWithOrdinal(span.GetText()))
{
return(true);
}
} catch (ArgumentException) { }
}
return(false);
}
public override void SelectBestMatch()
{
ITextSnapshot snapshot = ApplicableTo.TextBuffer.CurrentSnapshot;
string typedText = ApplicableTo.GetText(snapshot);
if (string.IsNullOrWhiteSpace(typedText))
{
if (this.WritableCompletions.Any())
{
SelectionStatus = new CompletionSelectionStatus(WritableCompletions.First(), true, true);
}
return;
}
foreach (Completion comp in WritableCompletions)
{
if (comp.DisplayText.IndexOf(typedText, StringComparison.InvariantCultureIgnoreCase) > -1)
{
SelectionStatus = new CompletionSelectionStatus(comp, true, true);
return;
}
}
}
public override void SelectBestMatch()
{
ITextSnapshot snapshot = ApplicableTo.TextBuffer.CurrentSnapshot;
string typedText = ApplicableTo.GetText(snapshot);
if (string.IsNullOrWhiteSpace(typedText))
{
if (this.WritableCompletions.Any())
{
SelectionStatus = new CompletionSelectionStatus(WritableCompletions.First(), true, true);
}
return;
}
foreach (CrmCompletion comp in WritableCompletions)
{
if (comp.IsMatch(typedText))
{
SelectionStatus = new CompletionSelectionStatus(comp, true, true);
return;
}
}
}
/// <summary>
/// Determines and selects the only match in the completion set.
/// This ignores the user's filtering preferences.
/// </summary>
/// <returns>
/// True if a match is found and selected; otherwise, false if there
/// is no single match in the completion set.
/// </returns>
public bool SelectSingleBest() {
var text = ApplicableTo.GetText(ApplicableTo.TextBuffer.CurrentSnapshot);
Completion bestMatch = null;
// Using the _completions field to search through all completions
// and ignore filtering settings.
foreach (var comp in _completions) {
if (_comparer.IsCandidateMatch(_matchInsertionText ? comp.InsertionText : comp.DisplayText, text)) {
if (bestMatch == null) {
bestMatch = comp;
} else {
return false;
}
}
}
if (bestMatch != null) {
SelectionStatus = new CompletionSelectionStatus(
bestMatch,
isSelected: true,
isUnique: true
);
return true;
} else {
return false;
}
}
/// <summary>
/// Determines the best match in the completion set.
/// </summary>
public override void SelectBestMatch() {
var text = ApplicableTo.GetText(ApplicableTo.TextBuffer.CurrentSnapshot);
Completion bestMatch = _previousSelection;
int bestValue = 0;
bool isUnique = true;
bool allowSelect = true;
// Using the Completions property to only search through visible
// completions.
foreach (var comp in Completions) {
int value = _comparer.GetSortKey(_matchInsertionText ? comp.InsertionText : comp.DisplayText, text);
if (bestMatch == null || value > bestValue) {
bestMatch = comp;
bestValue = value;
isUnique = true;
} else if (value == bestValue) {
isUnique = false;
}
}
if (Moniker == "PythonOverrides") {
allowSelect = false;
isUnique = false;
}
if (((DynamicallyVisibleCompletion)bestMatch).Visible) {
SelectionStatus = new CompletionSelectionStatus(
bestMatch,
isSelected: allowSelect && bestValue > 0,
isUnique: isUnique
);
} else {
SelectionStatus = new CompletionSelectionStatus(
null,
isSelected: false,
isUnique: false
);
}
_previousSelection = bestMatch;
}
public override void SelectBestMatch()
{
var text = FilterSpan.GetText(FilterSpan.TextBuffer.CurrentSnapshot);
if (text.Length == 0)
{
SelectionStatus = new CompletionSelectionStatus(null, false, false);
return;
}
var num = int.MaxValue;
Completion completion = null;
foreach (var current in Completions)
{
var startIndex = current.DisplayText.StartsWith(InitialApplicableTo, StringComparison.OrdinalIgnoreCase) ? this.InitialApplicableTo.Length : 0;
var num2 = current.DisplayText.IndexOf(text, startIndex, StringComparison.OrdinalIgnoreCase);
if (num2 != -1 && num2 < num)
{
completion = current;
num = num2;
}
}
if (completion == null)
{
SelectionStatus = new CompletionSelectionStatus(null, false, false);
return;
}
SelectionStatus = new CompletionSelectionStatus(completion, true, true);
}
public override void SelectBestMatch()
{
SelectionStatus = new CompletionSelectionStatus(Completions[0], false, true);
}
bool Equals(CompletionSelectionStatus other) => (object)other != null && other.IsSelected == IsSelected && other.IsUnique == IsUnique && Equals(other.Completion, Completion);
// !EFW - This has been throwing random null reference exceptions in VS 2019. It's not something I've
// been able to duplicate so I've added null checks everywhere to see if that stops it.
private bool HandleCompletion(char commitCharacter)
{
ReadOnlyCollection <ICompletionSession> completionSessions = _completionBroker.GetSessions(_textView);
if (completionSessions == null || completionSessions.Count == 0)
{
return(false);
}
ICompletionSession completionSession = completionSessions[0];
if (completionSession == null || completionSession.IsDismissed)
{
return(false);
}
CompletionSet completionSet = completionSession.SelectedCompletionSet;
CompletionSelectionStatus selectionStatus = completionSet?.SelectionStatus;
if (!(selectionStatus?.Completion is SandcastleCompletion))
{
// Workaround some odd behavior in the completion when trying to enter "</". This prevents it
// from converting it to an XML comment ("<!--/-->").
if (commitCharacter == '/' && selectionStatus?.Completion?.InsertionText == "!--")
{
completionSession.Dismiss();
}
// Let other providers handle their own completions
return(false);
}
string insertionText = selectionStatus.Completion.InsertionText;
if (insertionText == null)
{
return(false);
}
completionSession.Commit();
bool passCharacterToEditor;
switch (commitCharacter)
{
case '/':
case '>':
// If the insertion text doesn't end with '>' or '/>', allow the user to complete the item and insert
// the closing element character by typing '/' or '>'.
passCharacterToEditor = !insertionText.EndsWith(">");
break;
case ' ':
// Only pass the space through if the completion item doesn't contain any replaceable elements
passCharacterToEditor = insertionText.IndexOf('\xFF') < 0;
break;
case '\n':
case '\t':
default:
// These items trigger completion, but aren't written to the output
passCharacterToEditor = false;
break;
}
return(!passCharacterToEditor);
}
public static bool IsUnique(this CompletionSelectionStatus status)
{
return((status.SelectionOptions & CompletionSelectionOptions.Unique) == CompletionSelectionOptions.Unique);
}
public override void SelectBestMatch()
{
var text = FilterSpan.GetText(FilterSpan.TextBuffer.CurrentSnapshot);
if (text.Length == 0)
{
if (InitialApplicableTo.EndsWith("\\", StringComparison.OrdinalIgnoreCase))
{
return;
}
foreach (var current in Completions)
{
if (current.InsertionText.StartsWith(InitialApplicableTo, StringComparison.OrdinalIgnoreCase))
{
SelectionStatus = new CompletionSelectionStatus(current, true, true);
return;
}
}
return;
}
int num = int.MaxValue;
int matchedCount = 0;
Completion completion = null;
foreach (var current in Completions)
{
string currentInsertionText = current.InsertionText;
if (current.InsertionText.StartsWith("\"", StringComparison.OrdinalIgnoreCase) && current.InsertionText.EndsWith("\"", StringComparison.OrdinalIgnoreCase))
{
currentInsertionText = currentInsertionText.Substring(1, currentInsertionText.Length - 2);
}
var startIndex = current.InsertionText.StartsWith(InitialApplicableTo, StringComparison.OrdinalIgnoreCase) ? this.InitialApplicableTo.Length : 0;
var num2 = currentInsertionText.IndexOf(text, startIndex, StringComparison.OrdinalIgnoreCase);
if (num2 != -1 && num2 < num)
{
completion = current;
num = num2;
++matchedCount;
}
}
if (completion == null)
{
SelectionStatus = new CompletionSelectionStatus(null, false, false);
return;
}
bool isFullyMatched = completion.InsertionText.Equals(InitialApplicableTo + text, StringComparison.OrdinalIgnoreCase);
var propertiesCollection = FilterSpan.TextBuffer.Properties;
if (propertiesCollection.ContainsProperty(BufferProperties.SessionCompletionFullyMatchedStatus))
{
propertiesCollection.RemoveProperty(BufferProperties.SessionCompletionFullyMatchedStatus);
}
propertiesCollection.AddProperty(BufferProperties.SessionCompletionFullyMatchedStatus, isFullyMatched);
bool isSelected = (matchedCount > 0);
bool isUnique = (matchedCount == 1);
SelectionStatus = new CompletionSelectionStatus(completion, isSelected, isUnique);
}
/// <summary>
/// Selects the best match to what the user typed
/// </summary>
/// <remarks>
/// The steps to determine the best match:
/// 1. Check if there is a precise match in the builders list
/// 2. If not - check if there is a precise match in the completions list
/// 3. If not - look up the closest match in the completions list
/// </remarks>
public override void SelectBestMatch()
{
string prefix = getPrefix();
// precise match to a completion builder
Completion completion = CompletionBuilders.FirstOrDefault(c => c.DisplayText.CompareTo(prefix) == 0);
// if none - precise match to a completion
if (completion == null)
completion = Completions.FirstOrDefault(c => c.DisplayText.CompareTo(prefix) == 0);
// if none - position the completion list
if (completion == null)
completion = Completions.FirstOrDefault(c => c.DisplayText.CompareTo(prefix) >= 0);
if (completion != null)
SelectionStatus = new CompletionSelectionStatus(completion,
completion.DisplayText == prefix,
true
);
}
public override void SelectBestMatch()
{
SelectionStatus = new CompletionSelectionStatus(Completions[0], false, true);
}
/// <summary>
/// Determines the best match in the completion set.
/// </summary>
public override void SelectBestMatch()
{
var text = ApplicableTo.GetText(ApplicableTo.TextBuffer.CurrentSnapshot);
Completion bestMatch = _previousSelection;
int bestValue = 0;
bool isUnique = true;
bool allowSelect = true;
if (!string.IsNullOrWhiteSpace(text))
{
// Using the Completions property to only search through visible
// completions.
foreach (var comp in Completions)
{
int value = _comparer.GetSortKey(comp.DisplayText, text);
if (bestMatch == null || value > bestValue)
{
bestMatch = comp;
bestValue = value;
isUnique = true;
}
else if (value == bestValue)
{
isUnique = false;
}
}
}
else
{
foreach (var comp in Completions)
{
int temp;
if (IntellisenseExtensions.LastCommittedCompletions.TryGetValue(comp.DisplayText, out temp))
{
if (bestMatch == null || temp > bestValue)
{
bestMatch = comp;
bestValue = temp;
isUnique = true;
}
}
}
}
if (bestMatch == null)
{
bestMatch = Completions[0];
}
if (((DynamicallyVisibleCompletion)bestMatch).Visible)
{
SelectionStatus = new CompletionSelectionStatus(bestMatch,
isSelected: allowSelect && bestValue > 0,
isUnique: isUnique);
}
else
{
SelectionStatus = new CompletionSelectionStatus(null,
isSelected: false,
isUnique: false);
}
_previousSelection = bestMatch;
}
