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"""ContainerWidget class.
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Represents a container that can be used to group other widgets.
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"""
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# Copyright (c) IPython Development Team.
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# Distributed under the terms of the Modified BSD License.
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from .widget import DOMWidget
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from IPython.utils.traitlets import Unicode, Tuple, TraitError
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class ContainerWidget(DOMWidget):
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_view_name = Unicode('ContainerView', sync=True)
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# Child widgets in the container.
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# Using a tuple here to force reassignment to update the list.
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# When a proper notifying-list trait exists, that is what should be used here.
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children = Tuple(sync=True, allow_none=False)
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def __init__(self, children = (), **kwargs):
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kwargs['children'] = children
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super(ContainerWidget, self).__init__(**kwargs)
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self.on_displayed(ContainerWidget._fire_children_displayed)
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def _fire_children_displayed(self):
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for child in self.children:
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child._handle_displayed()
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class PopupWidget(ContainerWidget):
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_view_name = Unicode('PopupView', sync=True)
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description = Unicode(sync=True)
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button_text = Unicode(sync=True)
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