src/eventfilters.cpp


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#include "eventfilters.h"

bool AOLineEditFilter::eventFilter(QObject *obj, QEvent *event)
{
  QLineEdit *lineEdit = qobject_cast<QLineEdit *>(obj);
  if (event->type() == QEvent::FocusOut && lineEdit != nullptr && preserve_selection)
  { // lost focus
    int start = lineEdit->selectionStart();
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
    int len = lineEdit->selectionLength();
#else
    int len = lineEdit->selectedText().length();
#endif
    if (start != -1 && len != -1)
    {
      lineEdit->setSelection(start, len);
      return true;
    }
  }
  return false;
}