ElementContext carries the part of the screen where an element can be
seen, passed down in a Frame and narrowed by each Scroll to its own box.
A dropdown opens below only if its list fits in that part, otherwise above
if it fits there, or else on the side with more room, so one at the
bottom of a scrolled list no longer opens past the list's edge.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Popup draws one element above the rest of the screen and gets mouse
events first; clicking or scrolling outside closes it. ElementContext now
carries each element's position on screen so an input inside a scroll can
open a popup beside itself.
Select is a dropdown: the current value opens an OptionList with the
current option ticked, scrolling for long lists and opening upward when
there's no room below. The color picker moved out of ColorInput into a
ColorPicker popup, so scroll areas no longer clip it and later rows no
longer draw over it, and all three of its parts can be dragged.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
selimaj-devandclaude