internal void Add(int logicalLineNumber, DocumentLine line)
{
if (line == null)
{
return;
}
var newLine = new MdTextViewLine(this, textEditor, line, logicalLineNumber, textEditor.TextViewMargin.GetLayout(line));
for (int i = 0; i < Count; i++)
{
if (((MdTextViewLine)this [i]).LineNumber == logicalLineNumber)
{
this [i] = newLine;
return;
}
}
int index = 0;
for (; index < Count; index++)
{
if (this [index].Start.Position > newLine.Start.Position)
{
break;
}
}
Insert(index, newLine);
}
internal void Add(int logicalLineNumber, DocumentLine line)
{
if (line == null)
{
return;
}
var newLine = new MdTextViewLine(this, textEditor, line, logicalLineNumber, textEditor.TextViewMargin.GetLayout(line));
for (int i = 0; i < Count; i++)
{
if (((MdTextViewLine)this [i]).LineNumber == logicalLineNumber)
{
this [i] = newLine;
return;
}
}
Add(newLine);
}
internal ITextViewLine Add(int logicalLineNumber, DocumentLine line, TextViewMargin.LayoutWrapper layoutWrapper)
{
if (line == null)
{
return(null);
}
if (Count == 0)
{
this.textSnapshot = textEditor.TextSnapshot;
}
else
{
System.Diagnostics.Debug.Assert(this.textSnapshot == textEditor.TextSnapshot);
}
if (line.EndOffsetIncludingDelimiter > textSnapshot.Length) // prevent to create invalid text view lines.
{
return(null);
}
var newLine = new MdTextViewLine(this, textEditor, line, logicalLineNumber, layoutWrapper);
for (int i = 0; i < Count; i++)
{
if (((MdTextViewLine)this [i]).LineNumber == logicalLineNumber)
{
this [i] = newLine;
return(newLine);
}
}
int index = 0;
for (; index < Count; index++)
{
if (this [index].Start.Position > newLine.Start.Position)
{
break;
}
}
Insert(index, newLine);
return(newLine);
}
internal ITextViewLine Add(int logicalLineNumber, DocumentLine line)
{
if (line == null)
{
return(null);
}
if (Count == 0)
{
this.textSnapshot = textEditor.TextSnapshot;
}
else
{
System.Diagnostics.Debug.Assert(this.textSnapshot == textEditor.TextSnapshot);
}
var newLine = new MdTextViewLine(this, textEditor, line, logicalLineNumber, textEditor.TextViewMargin.GetLayout(line));
for (int i = 0; i < Count; i++)
{
if (((MdTextViewLine)this [i]).LineNumber == logicalLineNumber)
{
this [i] = newLine;
return(newLine);
}
}
int index = 0;
for (; index < Count; index++)
{
if (this [index].Start.Position > newLine.Start.Position)
{
break;
}
}
Insert(index, newLine);
return(newLine);
}
internal void OnVisualBufferChanged(object sender, TextContentChangedEventArgs e)
{
if (textSnapshot != null)
{
foreach (ITextChange textChange in e.Changes)
{
Span textChangeCurrentSpan;
if (e.Before == textSnapshot)
{
textChangeCurrentSpan = textChange.OldSpan;
}
else if (e.After == textSnapshot)
{
textChangeCurrentSpan = textChange.NewSpan;
}
else
{
ITrackingSpan textChangeOldSpan = e.Before.CreateTrackingSpan(textChange.OldSpan, SpanTrackingMode.EdgeInclusive);
textChangeCurrentSpan = textChangeOldSpan.GetSpan(textSnapshot);
}
var startLine = textSnapshot.GetLineFromPosition(textChangeCurrentSpan.Start);
var endLine = startLine;
if (startLine.EndIncludingLineBreak.Position < textChangeCurrentSpan.End)
{
endLine = textSnapshot.GetLineFromPosition(textChangeCurrentSpan.End);
}
for (int i = startLine.LineNumber; i <= endLine.LineNumber; i++)
{
modifiedLinesCache.Add(i);
}
}
}
// Recreate MdTextViewLine for the current snapshot for all lines except those
// modified as those will get recreated during render
foreach (MdTextViewLine line in this)
{
int lineNumber = line.LineNumber;
if (!modifiedLinesCache.Contains(lineNumber - 1))
{
reusedLinesCache.Add(line);
}
}
this.Clear();
var newSnapshot = e.After;
foreach (MdTextViewLine line in reusedLinesCache)
{
var snapshotLine = textSnapshot.GetLineFromLineNumber(line.LineNumber - 1);
var lineStart = textSnapshot.CreateTrackingPoint(snapshotLine.Start, PointTrackingMode.Negative);
var newLineStart = lineStart.GetPosition(newSnapshot);
var newSnapshotLine = newSnapshot.GetLineFromPosition(newLineStart);
int lineNumber = newSnapshotLine.LineNumber + 1;
var documentLine = textEditor.Document.GetLine(lineNumber);
var newLine = new MdTextViewLine(this, textEditor, documentLine, lineNumber, textEditor.TextViewMargin.GetLayout(documentLine));
Add(newLine);
}
modifiedLinesCache.Clear();
reusedLinesCache.Clear();
textSnapshot = newSnapshot;
// we need this to synchronize MultiSelectionBroker to the new snapshot
this.textEditor.TextArea.RaiseLayoutChanged();
}
