QAbstractItemView: clicked() signal should let you know which mouse button was used

The QAbstractItemView::clicked() signal is emitted every time an item on the view is clicked. However, it would be useful if there was a way to see which mouse button caused the signal. A signal like QAbstractItemView::clicked(Qt::MouseButton, const QModelIndex&) would be very useful.

Rejected:
Use QApplication::mouseButtons() to obtain this information.