**Open Todos:**
☑ separate different menuitem types into their own classes instead of defining menuitemtypes
☐ numeric parameter menu (non popup)
☑ more than 7 choice parameter menu (non popup)
☑ not dimming the menu item line currently being changed with popupparameter
☐ checkbox for boolean choices in separate subtask: T1193
☑ read-only item drawing
☐ pressed - color drawing of popupparametermenu/parameterscreen
☑ update and draw previous choice indicator in parameter list screen