import ipywidgets as widgets
from .utils import adapt_value
def create_value_serializer(name):
"""Create a serializer that support widgets, and anything json accepts while preserving type"""
def value_to_json(value, widget):
# first take out all widgets
value = widgets.widget_serialization['to_json'](value, widget)
return adapt_value(value)
def json_to_value(data, widget):
# first put pack widgets in
value = widgets.widget_serialization['from_json'](data, widget)
original = getattr(widget, name)
if hasattr(original, 'copy'): # this path will try to preserve the type
# numpy arrays and dataframs follow this path
try:
copy = original.copy()
copy[:] = value
value = copy
except TypeError:
pass # give up for instance when we set Widgets into a float array
return value
return {
'to_json': value_to_json,
'from_json': json_to_value
}
