[
 {
  "note": "#288: a panel drop-down highlights the row under the pointer with the hover background, and the row with keyboard focus. Drop-down rows publish `dropdown:<command id>`, the highlighted one also `dropdown_hot:<command id>`."
 },
 {
  "click": {
   "handle": "panel:SOLID:CREATE"
  }
 },
 {
  "expect": {
   "shown_handles": ["dropdown:solid.box", "dropdown:solid.sphere"],
   "hidden_handles": ["dropdown_hot:solid.box", "dropdown_hot:solid.sphere"]
  }
 },
 {
  "move": {
   "handle": "dropdown:solid.box"
  }
 },
 {
  "expect": {
   "shown_handles": ["dropdown_hot:solid.box"],
   "hidden_handles": ["dropdown_hot:solid.sphere", "dropdown_hot:solid.cylinder"]
  }
 },
 {
  "move": {
   "handle": "dropdown:solid.sphere"
  }
 },
 {
  "expect": {
   "shown_handles": ["dropdown_hot:solid.sphere"],
   "hidden_handles": ["dropdown_hot:solid.box"]
  }
 },
 {
  "move": [700, 600]
 },
 {
  "expect": {
   "shown_handles": ["dropdown:solid.box"],
   "hidden_handles": ["dropdown_hot:solid.sphere", "dropdown_hot:solid.box"]
  }
 },
 {
  "note": "The keyboard: Down focuses the first row, Down again the next; the highlight follows."
 },
 {
  "key": "ArrowDown"
 },
 {
  "expect": {
   "shown_handles": ["dropdown_hot:sketch.create"]
  }
 },
 {
  "key": "ArrowDown"
 },
 {
  "expect": {
   "shown_handles": ["dropdown_hot:solid.extrude"],
   "hidden_handles": ["dropdown_hot:sketch.create"]
  }
 },
 {
  "key": "Enter"
 },
 {
  "expect": {
   "hidden_handles": ["dropdown:solid.box"]
  }
 }
]