List <VirtualSnapshotSpan> GetSelectedSpans()
{
var list = new List <VirtualSnapshotSpan>();
if (Mode == TextSelectionMode.Stream)
{
list.Add(StreamSelectionSpan);
}
else
{
var helper = new BoxSelectionHelper(this);
var start = Start;
while (start <= End)
{
var line = TextView.GetTextViewLineContainingBufferPosition(start.Position);
list.Add(helper.GetSpan(line));
if (line.IsLastDocumentLine())
{
break;
}
start = new VirtualSnapshotPoint(line.GetPointAfterLineBreak());
}
}
// At least one span must be included, even if the span's empty
if (list.Count == 0)
{
list.Add(StreamSelectionSpan);
}
return(list);
}
public VirtualSnapshotSpan?GetSelectionOnTextViewLine(ITextViewLine line)
{
if (line == null)
{
throw new ArgumentNullException(nameof(line));
}
if (line.Snapshot != TextView.TextSnapshot)
{
throw new ArgumentException();
}
if (IsEmpty)
{
if (line.ContainsBufferPosition(ActivePoint.Position))
{
return(new VirtualSnapshotSpan(ActivePoint, ActivePoint));
}
return(null);
}
if (Mode == TextSelectionMode.Stream)
{
var spanTmp = line.ExtentIncludingLineBreak.Intersection(StreamSelectionSpan.SnapshotSpan);
if (spanTmp == null)
{
return(null);
}
var span = spanTmp.Value;
if (End > new VirtualSnapshotPoint(line.End))
{
span = new SnapshotSpan(span.Start, line.EndIncludingLineBreak);
}
if (span.Length == 0)
{
return(null);
}
return(new VirtualSnapshotSpan(span));
}
else
{
Debug.Assert(Mode == TextSelectionMode.Box);
if (!line.IntersectsBufferSpan(StreamSelectionSpan.SnapshotSpan))
{
return(null);
}
var helper = new BoxSelectionHelper(this);
return(helper.GetSpan(line));
}
}
List<VirtualSnapshotSpan> GetSelectedSpans() {
var list = new List<VirtualSnapshotSpan>();
if (Mode == TextSelectionMode.Stream)
list.Add(StreamSelectionSpan);
else {
var helper = new BoxSelectionHelper(this);
var start = Start;
while (start <= End) {
var line = TextView.GetTextViewLineContainingBufferPosition(start.Position);
list.Add(helper.GetSpan(line));
if (line.IsLastDocumentLine())
break;
start = new VirtualSnapshotPoint(line.GetPointAfterLineBreak());
}
}
// At least one span must be included, even if the span's empty
if (list.Count == 0)
list.Add(StreamSelectionSpan);
return list;
}
public VirtualSnapshotSpan? GetSelectionOnTextViewLine(ITextViewLine line) {
if (line == null)
throw new ArgumentNullException(nameof(line));
if (line.Snapshot != TextView.TextSnapshot)
throw new ArgumentException();
if (IsEmpty) {
if (line.ContainsBufferPosition(ActivePoint.Position))
return new VirtualSnapshotSpan(ActivePoint, ActivePoint);
return null;
}
if (Mode == TextSelectionMode.Stream) {
var spanTmp = line.ExtentIncludingLineBreak.Intersection(StreamSelectionSpan.SnapshotSpan);
if (spanTmp == null)
return null;
var span = spanTmp.Value;
if (End > new VirtualSnapshotPoint(line.End))
span = new SnapshotSpan(span.Start, line.EndIncludingLineBreak);
if (span.Length == 0)
return null;
return new VirtualSnapshotSpan(span);
}
else {
Debug.Assert(Mode == TextSelectionMode.Box);
if (!line.IntersectsBufferSpan(StreamSelectionSpan.SnapshotSpan))
return null;
var helper = new BoxSelectionHelper(this);
return helper.GetSpan(line);
}
}