/usr/lib/python2.7/dist-packages/IPython/html/widgets/widget_container.py is in ipython-notebook 2.4.1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | """ContainerWidget class.
Represents a container that can be used to group other widgets.
"""
#-----------------------------------------------------------------------------
# Copyright (c) 2013, the IPython Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file COPYING.txt, distributed with this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from .widget import DOMWidget
from IPython.utils.traitlets import Unicode, Tuple, TraitError
#-----------------------------------------------------------------------------
# Classes
#-----------------------------------------------------------------------------
class ContainerWidget(DOMWidget):
_view_name = Unicode('ContainerView', 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 __init__(self, **kwargs):
super(ContainerWidget, self).__init__(**kwargs)
self.on_displayed(ContainerWidget._fire_children_displayed)
def _fire_children_displayed(self):
for child in self._children:
child._handle_displayed()
def _children_changed(self, name, old, new):
"""Validate children list.
Makes sure only one instance of any given model can exist in the
children list.
An excellent post on uniqifiers is available at
http://www.peterbe.com/plog/uniqifiers-benchmark
which provides the inspiration for using this implementation. Below
I've implemented the `f5` algorithm using Python comprehensions."""
if new is not None:
seen = {}
def add_item(i):
seen[i.model_id] = True
return i
self._children = [add_item(i) for i in new if not i.model_id in seen]
class PopupWidget(ContainerWidget):
_view_name = Unicode('PopupView', sync=True)
description = Unicode(sync=True)
button_text = Unicode(sync=True)
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