int IOleCommandTarget.Exec(ref Guid commandGroupId, uint commandId, uint executeInformation, IntPtr inVar, IntPtr outVar)
{
if (commandGroupId == Guids.CommandSetId)
{
switch (commandId)
{
case CommandIDs.ImplementNotifyPropertyChangedCommandId:
// TODO: Wrap in undo transaction
IEnumerable <SyntaxAnnotation> propertyAnnotations;
var newCompUnit = Implementer.Apply(GetText(), GetSelectionSpan(), out propertyAnnotations);
// Store the top line number in view so we can reset it afterwards
var topLineNumber = wpfTextView.TextViewLines.FirstVisibleLine.Start.GetContainingLine().LineNumber;
var buffer = wpfTextView.TextBuffer;
buffer.Replace(new Span(0, buffer.CurrentSnapshot.Length), newCompUnit.ToString());
var snapshot = buffer.CurrentSnapshot;
var annotatedProperties = propertyAnnotations.Select(annotation => newCompUnit.GetAnnotatedNode <PropertyDeclarationSyntax>(annotation));
// Create tracking points from the start of the first property that we expanded to the end of the last property.
var selectionStart = snapshot.CreateTrackingPoint(annotatedProperties.First().Span.Start, PointTrackingMode.Negative);
var selectionEnd = snapshot.CreateTrackingPoint(annotatedProperties.Last().Span.End, PointTrackingMode.Positive);
FormatDocument();
// After formatting, use our tracking points to select the expanded properties
var formattedSnapshot = buffer.CurrentSnapshot;
wpfTextView.Selection.Select(
new VirtualSnapshotPoint(selectionStart.GetPoint(formattedSnapshot)),
new VirtualSnapshotPoint(selectionEnd.GetPoint(formattedSnapshot)));
// Reset the top line in view
var topLine = formattedSnapshot.GetLineFromLineNumber(topLineNumber);
wpfTextView.DisplayTextLineContainingBufferPosition(topLine.Start, 0.0, ViewRelativePosition.Top);
return(VSConstants.S_OK);
}
}
return(nextCommandTarget.Exec(ref commandGroupId, commandId, executeInformation, inVar, outVar));
}
int IOleCommandTarget.QueryStatus(ref Guid commandGroupId, uint commandCount, OLECMD[] commands, IntPtr commandText)
{
if (commandGroupId == Guids.CommandSetId)
{
switch (commands[0].cmdID)
{
case CommandIDs.ImplementNotifyPropertyChangedCommandId:
if (Implementer.IsAvailable(GetText(), GetSelectionSpan()))
{
commands[0].cmdf = (uint)(OLECMDF.OLECMDF_ENABLED | OLECMDF.OLECMDF_SUPPORTED);
}
else
{
commands[0].cmdf = (uint)(OLECMDF.OLECMDF_SUPPORTED);
}
return(VSConstants.S_OK);
}
}
return(nextCommandTarget.QueryStatus(ref commandGroupId, commandCount, commands, commandText));
}