When using AutoComplete on Mobile devices, the onscreen keyboard pops up, and will mask the drop down list from the AutoComplete component.  Yes, the Height of the dropdown list is controllable (px, em, etc.), but this is problematic with varying display sizes.  For example, I was able to show a list of 6 lines on my phone, but when I demoed the App to the Chief Development Officer, his phone was older, smaller, and when the keyboard popped up, only 4 lines were visible!  So embarrassing.

What I want to propose is to extend the AutoComplete component with a new Control called PopUpLines, where the MAX number of lines that can be displayed is set.  In my example, I would set this value to 4 to make sure it works on the CDO's phone.  However, the AutoComplete control would need to know what the screen size is, calculate how big a line is, and how many lines can be displayed without the on-screen keyboard masking the list.  It would then display from 1 to PopULines worth of lines in the drop down box.  This would insure that a on-screen keyboard never masks the AutoComplete list, destroying UI functionality.