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don't validate ContainerWidget.children

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just use a plain Tuple, so we don't have to define a new Trait
This commit is contained in:
MinRK 2014-02-25 19:08:43 -08:00
parent 4b35f84c15
commit d8b6a1a0ba
1 changed files with 6 additions and 13 deletions
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19
IPython/html/widgets/widget_container.py
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@ -14,27 +14,20 @@ Represents a container that can be used to group other widgets.
# Imports
#-----------------------------------------------------------------------------
from .widget import DOMWidget
from IPython.utils.traitlets import Unicode, Tuple, Instance, TraitError
from IPython.utils.traitlets import Unicode, Tuple, TraitError
#-----------------------------------------------------------------------------
# Classes
#-----------------------------------------------------------------------------
class TupleOfDOMWidgets(Tuple):
"""Like Tuple(Instance(DOMWidget)), but without checking length."""
def validate_elements(self, obj, value):
for v in value:
if not isinstance(v, DOMWidget):
raise TraitError("Container.children must be DOMWidgets, not %r" % v)
return value
class ContainerWidget(DOMWidget):
_view_name = Unicode('ContainerView', sync=True)
# Keys, all private and managed by helper methods. Flexible box model
# classes...
children = TupleOfDOMWidgets()
_children = TupleOfDOMWidgets(sync=True)
# Child widgets in the container.
# Using a tuple here to force reassignment to update the list.
# When a proper notifying-list trait exists, that is what should be used here.
children = Tuple()
_children = Tuple(sync=True)
def _children_changed(self, name, old, new):
"""Validate children list.