public void Set(ScreenBufferMessagesRange range)
{
lines.Clear();
lines.AddRange(range.Lines);
beginPosition = range.BeginPosition;
endPosition = range.EndPosition;
}
public void Append(ScreenBufferMessagesRange range)
{
Debug.Assert(endPosition == range.BeginPosition);
lines.AddRange(range.Lines);
endPosition = range.EndPosition;
}
static async Task <ScreenBufferMessagesRange> GetScreenBufferLines(
SourceBuffer src,
int count,
bool rawLogMode,
CancellationToken cancellation)
{
var part1 = new ScreenBufferMessagesRange();
part1.Lines = new List <DisplayLine>();
if (src.Count > 0)
{
if (count < 0)
{
var top = src.Get(0);
if (top.LineIndex != 0)
{
var messageLinesCount = top.Message.GetDisplayText(rawLogMode).GetLinesCount();
for (var i = 0; i < top.LineIndex; ++i)
{
part1.Lines.Add(new DisplayLine(top.Message, i, messageLinesCount));
if (++count == 0)
{
break;
}
}
}
}
else if (count > 0)
{
var botton = src.Get(src.Count - 1);
var messageLinesCount = botton.Message.GetDisplayText(rawLogMode).GetLinesCount();
if (botton.LineIndex < (messageLinesCount - 1))
{
for (int i = botton.LineIndex + 1; i < messageLinesCount; ++i)
{
part1.Lines.Add(new DisplayLine(botton.Message, i, messageLinesCount));
if (--count == 0)
{
break;
}
}
}
}
if (part1.Lines.Count > 0)
{
part1.BeginPosition = part1.Lines[0].Message.Position;
part1.EndPosition = part1.Lines.Last().Message.EndPosition;
}
if (count == 0)
{
return(part1);
}
}
var part2 = await GetScreenBufferLines(
src.Source,
count < 0?src.BeginPosition : src.EndPosition,
Math.Abs(count),
count < 0?EnumMessagesFlag.Backward : EnumMessagesFlag.Forward,
rawLogMode,
cancellation
);
if (part1.Lines.Count == 0)
{
return(part2);
}
if (count > 0)
{
part1.Lines.AddRange(part2.Lines);
part1.EndPosition = part2.EndPosition;
}
else
{
part1.Lines.InsertRange(0, part2.Lines);
part1.BeginPosition = part2.BeginPosition;
}
return(part1);
}
public void Prepend(ScreenBufferMessagesRange range)
{
Debug.Assert(beginPosition == range.EndPosition);
lines.InsertRange(0, range.Lines);
beginPosition = range.BeginPosition;
}
