Updates the value property to ensure that the range
between lower and upper is in the current page (i.e. between
value and value + page-size).
If the range is larger than the page size, then only the start of it will
be in the current page.
A value-changed signal will be emitted if the value is changed.
Updates the value property to ensure that the range between lower and upper is in the current page (i.e. between value and value + page-size). If the range is larger than the page size, then only the start of it will be in the current page.
A value-changed signal will be emitted if the value is changed.