public void SetToOffsetWithDesiredColumn(int desiredOffset)
{
DocumentLocation old = Location;
int desiredLineNumber = TextEditor.Document.OffsetToLineNumber(desiredOffset);
var desiredLine = TextEditor.Document.GetLine(desiredLineNumber);
int newColumn = desiredOffset - desiredLine.Offset + 1;
if (desiredLine.Length + 1 < Column && newColumn == 1)
{
if (TextEditor.HasIndentationTracker && TextEditor.Options.IndentStyle == IndentStyle.Virtual)
{
newColumn = TextEditor.GetVirtualIndentationColumn(desiredLineNumber, 1);
}
}
line = desiredLineNumber;
column = newColumn;
var logicalDesiredColumn = desiredLine.GetLogicalColumn(TextEditor, DesiredColumn);
if (logicalDesiredColumn <= desiredLine.Length + 1)
{
int possibleOffset = TextEditor.Document.LocationToOffset(desiredLineNumber, logicalDesiredColumn);
column = logicalDesiredColumn;
}
else
{
column = System.Math.Max(newColumn, desiredLine.Length + 1);
}
UpdateCaretOffset();
OnPositionChanged(new DocumentLocationEventArgs(old));
}
void CheckColumn()
{
var curLine = TextEditor.Document.GetLine(Line);
if (TextEditor.HasIndentationTracker && TextEditor.Options.IndentStyle == IndentStyle.Virtual && curLine.Length == 0)
{
if (column > DocumentLocation.MinColumn)
{
var indentColumn = TextEditor.GetVirtualIndentationColumn(Location);
if (column < indentColumn)
{
column = indentColumn;
UpdateCaretOffset();
return;
}
if (column == indentColumn)
{
return;
}
}
}
if (!AllowCaretBehindLineEnd)
{
var max = curLine.Length + 1;
if (column > max)
{
column = max;
UpdateCaretOffset();
}
}
}
internal void UpdateCaretPosition(DocumentChangeEventArgs e)
{
if (e.AnchorMovementType == AnchorMovementType.BeforeInsertion && caretOffset == e.Offset)
{
offsetVersion = TextEditor.Document.Version;
return;
}
var curVersion = TextEditor.Document.Version;
if (offsetVersion == null)
{
offsetVersion = curVersion;
return;
}
var newOffset = offsetVersion.MoveOffsetTo(curVersion, caretOffset);
offsetVersion = curVersion;
if (newOffset == caretOffset || !AutoUpdatePosition)
{
return;
}
DocumentLocation old = Location;
var newLocation = TextEditor.Document.OffsetToLocation(newOffset);
int newColumn = newLocation.Column;
var curLine = TextEditor.Document.GetLine(newLocation.Line);
if (TextEditor.HasIndentationTracker && TextEditor.Options.IndentStyle == IndentStyle.Virtual && curLine.Length == 0)
{
var indentColumn = TextEditor.GetVirtualIndentationColumn(Location);
if (column == indentColumn)
{
newColumn = indentColumn;
}
}
if (AllowCaretBehindLineEnd)
{
if (curLine != null && column > curLine.Length)
{
newColumn = column;
}
}
line = newLocation.Line;
column = newColumn;
SetDesiredColumn();
UpdateCaretOffset();
OnPositionChanged(new DocumentLocationEventArgs(old));
}
void SetColumn()
{
var curLine = TextEditor.Document.GetLine(Line);
if (curLine == null)
{
return;
}
column = System.Math.Max(DocumentLocation.MinColumn, Column);
column = curLine.GetLogicalColumn(TextEditor, DesiredColumn);
if (TextEditor.HasIndentationTracker && TextEditor.Options.IndentStyle == IndentStyle.Virtual && curLine.GetVisualColumn(TextEditor, column) < DesiredColumn)
{
column = TextEditor.GetVirtualIndentationColumn(Line, column);
}
else
{
if (!AllowCaretBehindLineEnd && Column > curLine.Length + 1)
{
column = System.Math.Min(curLine.Length + 1, column);
}
}
}