internal static void InsertLines(InternalLinesViewer panel, List <DiffPiece> lines, bool isOld, UIElement source)
{
if (lines == null || panel == null)
{
return;
}
var guid = panel.TrackingId = Guid.NewGuid();
if (lines.Count < 500)
{
InsertLinesInteral(panel, lines, isOld, source);
return;
}
var disablePieces = lines.Count > MaxCount; // For performance.
InsertLinesInteral(panel, lines.Take(300).ToList(), isOld, source, disablePieces);
Task.Delay(800).ContinueWith(t => // For performance.
{
panel.Dispatcher.Invoke(() =>
{
if (panel.TrackingId != guid)
{
return;
}
InsertLinesInteral(panel, lines.Skip(300).ToList(), isOld, source, disablePieces);
});
});
}
private static void InsertLinesInteral(InternalLinesViewer panel, List <DiffPiece> lines, bool isOld, UIElement source, bool disableSubPieces = false)
{
foreach (var line in lines)
{
if (line == null)
{
var c = panel.Add(null, null, null as string, ChangeType.Unchanged.ToString(), source);
c.Tag = line;
continue;
}
var changeType = line.Type;
var text = line.Text;
var hasAdded = false;
switch (line.Type)
{
case ChangeType.Modified:
changeType = isOld ? ChangeType.Deleted : ChangeType.Inserted;
if (line.SubPieces != null && line.SubPieces.Count > 1 && !disableSubPieces)
{
var details = GetSubPiecesInfo(line, isOld);
var c = panel.Add(line.Position, isOld ? "-" : "+", details, changeType.ToString(), source);
c.Tag = line;
hasAdded = true;
}
break;
case ChangeType.Inserted:
case ChangeType.Deleted:
case ChangeType.Unchanged:
break;
default:
changeType = ChangeType.Imaginary;
text = string.Empty;
break;
}
if (!hasAdded)
{
string op = " ";
switch (changeType)
{
case ChangeType.Inserted:
op = "+";
break;
case ChangeType.Deleted:
op = "-";
break;
}
var c = panel.Add(line.Position, op, text, changeType.ToString(), source);
c.Tag = line;
}
}
panel.AdjustScrollView();
}
internal static bool GoTo(InternalLinesViewer panel, int lineIndex)
{
var currentScrollPosition = panel.ValueScrollViewer.VerticalOffset;
var point = new Point(0, currentScrollPosition);
foreach (var item in panel.ValuePanel.Children)
{
if (!(item is FrameworkElement ele) || !(ele.Tag is DiffPiece line) || line?.Position != lineIndex)
{
continue;
}
var pos = ele.TransformToVisual(panel.ValueScrollViewer).Transform(point);
panel.ValueScrollViewer.ScrollToVerticalOffset(pos.Y);
return(true);
}
return(false);
}
/// <summary>
/// Updates the inline diffs view.
/// </summary>
internal static void RenderInlineDiffs(InternalLinesViewer viewer, DiffPaneModel m, UIElement source)
{
viewer.Clear();
if (m?.Lines == null)
{
return;
}
var disableSubPieces = m.Lines.Count > MaxCount; // For performance.
foreach (var line in m.Lines)
{
if (line == null)
{
var c = viewer.Add(null, null, null as string, ChangeType.Unchanged.ToString(), source);
c.Tag = line;
continue;
}
var changeType = line.Type;
var text = line.Text;
var hasAdded = false;
switch (line.Type)
{
case ChangeType.Modified:
changeType = ChangeType.Inserted;
break;
case ChangeType.Inserted:
if (line.SubPieces != null && line.SubPieces.Count > 1 && !disableSubPieces)
{
var details = GetSubPiecesInfo(line, true);
var c = viewer.Add(line.Position, "+", details, changeType.ToString(), source);
c.Tag = line;
hasAdded = true;
}
break;
case ChangeType.Deleted:
if (line.SubPieces != null && line.SubPieces.Count > 1 && !disableSubPieces)
{
var details = GetSubPiecesInfo(line, false);
var c = viewer.Add(line.Position, "-", details, changeType.ToString(), source);
c.Tag = line;
hasAdded = true;
}
break;
case ChangeType.Unchanged:
break;
default:
changeType = ChangeType.Imaginary;
text = string.Empty;
break;
}
if (!hasAdded)
{
var c = viewer.Add(line.Position, changeType switch
{
ChangeType.Inserted => "+",
ChangeType.Deleted => "-",
_ => " "
}, text, changeType.ToString(), source);
