/// <summary>
/// Gets the start and end positions (0-based) of the selection.
/// If no selection is active, the position of the caret is returned; in this case start and end positions are the same.
/// </summary>
/// <returns>Start and end positions (0-based) of the selection or the caret. If it can not be retrieved, the tuple (-1, -1) is returned.</returns>
private (int selectionStartPosition, int selectionEndPosition) GetSelectionStartAndEndPosition()
{
if (IsViewerSelected)
{
var(sourceStart, isSourceStartAccurate) = PositionHelper.ViewersTextPositionToSourceEditorsTextPosition(_guiViewer.Selection.Start);
var(sourceEnd, isSourceEndAccurate) = PositionHelper.ViewersTextPositionToSourceEditorsTextPosition(_guiViewer.Selection.End);
if (isSourceStartAccurate && isSourceEndAccurate)
{
return(sourceStart, sourceEnd);
}
else
{
return(-1, -1);
}
}
else // Editor is selected
{
int selectionStart = 0;
int selectionEnd = 0;
if (_guiEditor.SelectionLength > 0)
{
selectionStart = _guiEditor.SelectionStart;
selectionEnd = _guiEditor.SelectionStart + _guiEditor.SelectionLength;
}
else
{
selectionStart = _guiEditor.CaretOffset;
selectionEnd = _guiEditor.CaretOffset;
}
return(selectionStart, selectionEnd);
}
}
/// <summary>
/// Gets the start and end line/column positions (1-based) of the selection. If no selection is active, the position of the caret is returned; in this case start and end line/column positions are the same.
/// </summary>
/// <returns>Start and end line/column positions (1-based) of the selection or the caret. If it can not be retrieved, the tuple (0, 0, 0, 0) is returned.</returns>
private (int startline, int startcolumn, int endline, int endcolumn) GetSelectionOrCaret()
{
if (IsViewerSelected)
{
var(sourceStart, isSourceStartAccurate) = PositionHelper.ViewersTextPositionToSourceEditorsTextPosition(_guiViewer.Selection.Start);
var(sourceEnd, isSourceEndAccurate) = PositionHelper.ViewersTextPositionToSourceEditorsTextPosition(_guiViewer.Selection.End);
if (isSourceStartAccurate && isSourceEndAccurate)
{
var startLocation = _guiEditor.Document.GetLocation(sourceStart);
var endLocation = _guiEditor.Document.GetLocation(sourceEnd);
return(startLocation.Line, startLocation.Column, endLocation.Line, endLocation.Column);
}
else
{
return(0, 0, 0, 0);
}
}
else // Editor is selected
{
int selectionStart = 0;
int selectionEnd = 0;
if (_guiEditor.SelectionLength > 0)
{
selectionStart = _guiEditor.SelectionStart;
selectionEnd = _guiEditor.SelectionStart + _guiEditor.SelectionLength;
}
else
{
selectionStart = _guiEditor.CaretOffset;
selectionEnd = _guiEditor.CaretOffset;
}
var startLocation = _guiEditor.Document.GetLocation(selectionStart);
var endLocation = _guiEditor.Document.GetLocation(selectionEnd);
return(startLocation.Line, startLocation.Column, endLocation.Line, endLocation.Column);
}
}