def process_event(self, event: Union[MouseEvent, KeyboardEvent]) -> None:
"""Process either a mouse or a keyboard event.
Args:
event : The event that triggered the function.
"""
if isinstance(event, KeyboardEvent):
if event.key_code == Screen.ctrl("n"):
self.move_next()
elif event.key_code == Screen.ctrl(
"b") and self.previous_form is not None:
self.move_back()
Frame.process_event(self, event)
def test_multi_column_list_box(self):
"""
Check MultiColumnListBox works as expected.
"""
# Create a dummy screen.
screen = MagicMock(spec=Screen, colours=8, unicode_aware=False)
scene = MagicMock(spec=Scene)
canvas = Canvas(screen, 10, 40, 0, 0)
# Create the form we want to test.
form = Frame(canvas, canvas.height, canvas.width, has_border=False)
layout = Layout([100], fill_frame=True)
mc_list = MultiColumnListBox(
Widget.FILL_FRAME, [3, "4", ">4", "<4", ">10%", "100%"], [
(["1", "2", "3", "4", "5", "6"], 1),
(["11", "222", "333", "444", "555", "6"], 2),
(["111", "2", "3", "4", "5", "6"], 3),
(["1", "2", "33333", "4", "5", "6"], 4),
(["1", "2", "3", "4", "5", "6666666666666666666666"], 5),
],
titles=["A", "B", "C", "D", "E", "F"],
name="mc_list")
form.add_layout(layout)
layout.add_widget(mc_list)
form.fix()
form.register_scene(scene)
form.reset()
# Check we have a default value for our list.
form.save()
self.assertEqual(form.data, {"mc_list": 1})
# Check that UP/DOWN change selection.
self.process_keys(form, [Screen.KEY_DOWN])
form.save()
self.assertEqual(form.data, {"mc_list": 2})
self.process_keys(form, [Screen.KEY_UP])
form.save()
self.assertEqual(form.data, {"mc_list": 1})
# Check that PGUP/PGDN change selection.
self.process_keys(form, [Screen.KEY_PAGE_DOWN])
form.save()
self.assertEqual(form.data, {"mc_list": 5})
self.process_keys(form, [Screen.KEY_PAGE_UP])
form.save()
self.assertEqual(form.data, {"mc_list": 1})
# Check that the widget is rendered correctly.
form.update(0)
self.assert_canvas_equals(
canvas, "A B C D E F \n" +
"1 2 3 4 5 6 \n" +
"11 222 333 444 555 6 \n" +
"...2 3 4 5 6 \n" +
"1 2 3... 4 5 6 \n" +
"1 2 3 4 5 6666666666666666666\n" +
" \n" +
" \n" +
" \n" +
" \n")
# Check that mouse input changes selection.
self.process_mouse(form, [(2, 2, MouseEvent.LEFT_CLICK)])
form.save()
self.assertEqual(form.data, {"mc_list": 2})
self.process_mouse(form, [(2, 1, MouseEvent.LEFT_CLICK)])
form.save()
self.assertEqual(form.data, {"mc_list": 1})
# Check that the start_line can be read and set - and enforces good behaviour
mc_list.start_line = 0
self.assertEqual(mc_list.start_line, 0)
mc_list.start_line = len(mc_list.options) - 1
self.assertEqual(mc_list.start_line, len(mc_list.options) - 1)
mc_list.start_line = 10000000
self.assertEqual(mc_list.start_line, len(mc_list.options) - 1)
# Check that options can be read and set.
mc_list.options = [(["a", "b", "c", "d", "e", "f"], 0)]
self.assertEqual(mc_list.options,
[(["a", "b", "c", "d", "e", "f"], 0)])
mc_list.options = []
self.assertEqual(mc_list.options, [])
# Check that the form re-renders correctly afterwards.
form.update(1)
self.assert_canvas_equals(
canvas, "A B C D E F \n" +
" \n" +
" \n" +
" \n" +
" \n" +
" \n" +
" \n" +
" \n" +
" \n" +
" \n")
# Check that the current focus ignores unknown events.
event = object()
self.assertEqual(event, form.process_event(event))