public void TestContainsAny()
{
var buffer = new LogBufferList(Core.Columns.LineNumber);
buffer.Resize(3);
buffer[0].LineNumber = 1;
buffer[1].LineNumber = 2;
buffer[2].LineNumber = 3;
buffer.ContainsAny(Core.Columns.LineNumber, 1, new Int32Range(0, 1)).Should().BeTrue();
buffer.ContainsAny(Core.Columns.LineNumber, 1, new Int32Range(0, 2)).Should().BeTrue();
buffer.ContainsAny(Core.Columns.LineNumber, 1, new Int32Range(0, 3)).Should().BeTrue();
buffer.ContainsAny(Core.Columns.LineNumber, 1, new Int32Range(1, 1)).Should().BeFalse();
buffer.ContainsAny(Core.Columns.LineNumber, 1, new Int32Range(1, 2)).Should().BeFalse();
buffer.ContainsAny(Core.Columns.LineNumber, 1, new Int32Range(2, 1)).Should().BeFalse();
buffer.ContainsAny(Core.Columns.LineNumber, 2, new Int32Range(0, 3)).Should().BeTrue();
buffer.ContainsAny(Core.Columns.LineNumber, 2, new Int32Range(0, 1)).Should().BeFalse();
buffer.ContainsAny(Core.Columns.LineNumber, 2, new Int32Range(2, 1)).Should().BeFalse();
}
public void UpdateVisibleLines()
{
_visibleTextLines.Clear();
if (_logSource == null)
{
return;
}
try
{
_visibleBufferBuffer.Clear();
_visibleBufferBuffer.Resize(_currentlyVisibleSection.Count);
if (_currentlyVisibleSection.Count > 0)
{
// We don't want to block the UI thread for very long at all so we instruct the log source to only
// fetch data from the cache, but to fetch missing data for later (from the source).
var queryOptions = new LogSourceQueryOptions(LogSourceQueryMode.FromCache | LogSourceQueryMode.FetchForLater, TimeSpan.Zero);
_logSource.GetEntries(_currentlyVisibleSection, _visibleBufferBuffer, 0, queryOptions);
// Now comes the fun part. We need to detect if we could fetch *all* the data.
// This is done by inspecting the BufferedLogSource.RetrievalState - if we encounter any NotCached value,
// then the entry is part of the source, but was not cached at the time of trying to access it.
// If that's the case, we will instruct this canvas to re-fetch the once more in a bit. This loop will terminate once the
// cache has managed to fetch the desired data which should happen some time...
if (_visibleBufferBuffer.ContainsAny(PageBufferedLogSource.RetrievalState,
RetrievalState.NotCached,
new Int32Range(offset: 0, _currentlyVisibleSection.Count)))
{
if (!_requiresFurtherUpdate)
{
Log.DebugFormat("Requires further update (at least one entry is not in cache)");
_requiresFurtherUpdate = true;
_updateStart = DateTime.Now;
}
}
else
{
if (_requiresFurtherUpdate)
{
var elapsed = DateTime.Now - _updateStart;
Log.DebugFormat("No longer requires further update (all retrieved log entries are in cache), took {0:F1}ms", elapsed.TotalMilliseconds);
_requiresFurtherUpdate = false;
}
}
for (int i = 0; i < _currentlyVisibleSection.Count; ++i)
{
var line = new TextLine(_visibleBufferBuffer[i], _hoveredIndices, _selectedIndices,
_colorByLevel, _textSettings, _textBrushes)
{
IsFocused = IsFocused,
SearchResults = _searchResults
};
_visibleTextLines.Add(line);
}
}
Action fn = VisibleLinesChanged;
fn?.Invoke();
InvalidateVisual();
}
catch (ArgumentOutOfRangeException e)
{
Log.DebugFormat("Caught exception while trying to update text: {0}", e);
}
catch (IndexOutOfRangeException e)
{
Log.DebugFormat("Caught exception while trying to update text: {0}", e);
}
}