public void AugmentSignatureHelpSession(ISignatureHelpSession session, IList<ISignature> signatures)
{
SnapshotPoint? point = session.GetTriggerPoint(_buffer.CurrentSnapshot);
if (!point.HasValue)
return;
CssEditorDocument document = CssEditorDocument.FromTextBuffer(_buffer);
ParseItem item = document.StyleSheet.ItemBeforePosition(point.Value.Position);
if (item == null)
return;
Declaration dec = item.FindType<Declaration>();
if (dec == null || dec.PropertyName == null || dec.Colon == null)
return;
var span = _buffer.CurrentSnapshot.CreateTrackingSpan(dec.Colon.Start, dec.Length - dec.PropertyName.Length, SpanTrackingMode.EdgeNegative);
ValueOrderFactory.AddSignatures method = ValueOrderFactory.GetMethod(dec);
if (method != null)
{
signatures.Clear();
method(session, signatures, dec, span);
Dispatcher.CurrentDispatcher.BeginInvoke(
new Action(() => {
session.Properties.AddProperty("dec", dec);
session.Match();
}),
DispatcherPriority.Normal, null);
}
}
/// <summary>
/// Check if the property name in the text buffer has changed.
/// If so, then dismiss the syntax help tip.
/// </summary>
private void OnTextBufferChanged(object sender, TextContentChangedEventArgs eventArgs)
{
if (_trackingSpan != null && _session != null)
{
ITextSnapshot snapshot = _trackingSpan.TextBuffer.CurrentSnapshot;
SnapshotPoint startPoint = _trackingSpan.GetStartPoint(snapshot);
bool propertyNameStillValid = false;
if (startPoint.Position + _propertyName.Length <= snapshot.Length)
{
string text = _trackingSpan.GetText(snapshot);
if (text.StartsWith("[", StringComparison.Ordinal))
{
// The correct property name is still in the code
propertyNameStillValid = true;
_session.Match();
}
}
if (!propertyNameStillValid)
{
_session.Dismiss();
}
}
}
private void UpdateSession()
{
if (_session == null)
{
return;
}
UpdateModel();
_session.Recalculate();
_session.Match();
}
public void AugmentSignatureHelpSession(ISignatureHelpSession session, IList <ISignature> signatures)
{
SnapshotPoint?point = session.GetTriggerPoint(_buffer.CurrentSnapshot);
if (!point.HasValue)
{
return;
}
CssEditorDocument document = CssEditorDocument.FromTextBuffer(_buffer);
ParseItem item = document.StyleSheet.ItemBeforePosition(point.Value.Position);
if (item == null)
{
return;
}
Declaration dec = item.FindType <Declaration>();
if (dec == null || dec.PropertyName == null || dec.Colon == null)
{
return;
}
int length = dec.Length - (dec.Colon.Start - dec.Start);
var span = _buffer.CurrentSnapshot.CreateTrackingSpan(dec.Colon.Start, length, SpanTrackingMode.EdgeNegative);
ValueOrderFactory.AddSignatures method = ValueOrderFactory.GetMethod(dec);
if (method != null)
{
signatures.Clear();
method(session, signatures, dec, span);
Dispatcher.CurrentDispatcher.BeginInvoke(
new Action(() =>
{
if (session == null || session.Properties == null)
{
return;
}
session.Properties.AddProperty("dec", dec);
session.Match();
}),
DispatcherPriority.Normal, null);
}
}
private void UpdateSession()
{
if (_session == null)
{
return;
}
UpdateModel().ContinueWith(t =>
{
if (_session == null)
{
return;
}
_session.Recalculate();
_session.Match();
}, CancellationToken.None,
TaskContinuationOptions.OnlyOnRanToCompletion,
TaskScheduler.FromCurrentSynchronizationContext());
}
private void TriggerSession()
{
if (_session == null || _session.IsDismissed)
{
if (_quickInfoBroker.IsQuickInfoActive(_view))
{
_quickInfoBroker.GetSessions(_view)[0].Dismiss();
}
Dispatcher.CurrentDispatcher.BeginInvoke(new Action(() =>
{
_session = _signaturehelpBroker.TriggerSignatureHelp(_view);
if (_session != null)
{
_session.Match();
}
}), DispatcherPriority.Normal, null);
}
}
private void TriggerSession()
{
if (_session == null || _session.IsDismissed)
{
if (_quickInfoBroker.IsQuickInfoActive(_view))
{
_quickInfoBroker.GetSessions(_view)[0].Dismiss();
}
ThreadHelper.JoinableTaskFactory.StartOnIdle(
() =>
{
_session = _signaturehelpBroker.TriggerSignatureHelp(_view);
if (_session != null)
{
_session.Match();
}
return(Task.CompletedTask);
},
VsTaskRunContext.UIThreadNormalPriority);
}
}
