Moving things.
WHAT IT SUITS
Reordering Moving items between groups Arranging things spatially
WHAT IT MUST HAVE
A keyboard alternative.
WHY
Dragging is impossible without a pointer, and difficult with motor impairments.
WHAT THAT LOOKS LIKE
Selecting an item, then moving it with keys or with explicit controls.
WHAT TO PROVIDE VISUALLY
A clear indication of what is being dragged A clear indication of where it will land Feedback when it is not a valid target
WHAT TO ANNOUNCE
The item picked up, its position as it moves, and where it was dropped.
WHAT TO BE CAREFUL WITH
Touch, where dragging conflicts with scrolling Small targets Long lists requiring scroll while dragging
WHAT TO PROVIDE ALWAYS
A way to undo.
WHY
Accidental drops are common.
WHAT TO PERSIST
The new order, and confirm it was saved.
WHAT TO CONSIDER
Whether simpler controls would serve better.
WHY
Move-up and move-down controls are simpler, accessible, and frequently sufficient.
