I don't have 8.0 so I can't save you an example workbook. But here is a screen shot.
Your example has the date filter set to YEAR level, so there aren't really good date ranges to demonstrate.
I changed it to MONTH (same behavior works for DAY). I showed the filter. It's a slider. But if you click on one of the date values above the slider, your user gets the opportunity to select from a calendar or to type in a value.
See screen shot.
Date Screen.png 143.5 KB