private void ExecuteKeyboard(KeyEventArgs keyboardEvent)
{
var endingPosition = algorithm.GetSelectionPosition(keyboardEvent);
if (!selectionView.HasSelection())
{
selectionView.Select(new TextPosition(column: caretView.CaretPosition.Column, line: caretView.CaretPosition.Line));
}
selectionView.Select(endingPosition);
caretView.MoveCursor(endingPosition);
}
public void Execute(object parameter)
{
var keyboardEvent = parameter as KeyEventArgs;
var mouseEvent = parameter as MouseButtonEventArgs;
TextPosition newPos = null;
if (keyboardEvent != null)
{
newPos = caretView.GetNextPosition(keyboardEvent.Key);
keyboardEvent.Handled = true;
}
else if (mouseEvent != null)
{
newPos = mouseEvent.GetPosition(caretView).GetDocumentPosition(TextConfiguration.GetCharSize());
}
if (newPos == null)
{
return;
}
int column = -1, line = -1;
if (newPos.Column > textViewReader.GetLineLength(newPos.Line))
{
column = textViewReader.GetLineLength(newPos.Line);
}
if (newPos.Line >= textViewReader.LinesCount)
{
line = textViewReader.LinesCount - 1;
}
var moveDir = GetMoveDirection(newPos, caretView.CaretPosition);
newPos = new TextPosition(column > -1 ? column : newPos.Column, line > -1 ? line : newPos.Line);
newPos = textViewReader.AdjustStep(newPos, moveDir);
caretView.MoveCursor(newPos);
}