Is it possible in a configure_traits() window to have a button like 'Add integer' on which clicking will add a new integer field ready for edition in the same window?
As @jonathan-march points out, it would probably be safest if you only need a fixed number of fields to keep them hidden until you clicked the button, but if you need an indeterminate number, it's fairly trivial to make a List of Ints and then append to that list each time you click the button. The trouble will be in the book-keeping that comes with keeping track of the indices of those list elements when you want to listen to them. I whipped up a small example of how you might do this below:
from traits.api import Button, HasStrictTraits, Int, List
from traitsui.api import Group, Item, ListEditor, UItem, View
class DynamicListOfInts(HasStrictTraits):
integer_list = List(Int)
add_int = Button('Add integer')
def default_traits_view(self):
view = View(
Group(
UItem('add_int'),
Item('integer_list', editor=ListEditor()),
),
width=300,
height=500,
)
return view
def _add_int_changed(self):
self.integer_list.append(0)
if __name__ == '__main__':
list_of_ints = DynamicListOfInts()
list_of_ints.configure_traits()