def __init__(self, backend, dimensions, plots):
"""
The primary constructor for Dashboard Widgets.
:param backend: A dc_dashboard.Backend.Backend object which provides the backing data for
the dashboard
:param dimensions: A list of dc_dashboard.Dimension.Dimension objects describing cross filter
dimensions and groups used in the Dashboard
:param plots: A list of dc_dashboard.Plot.Plot/Layer objects describing the plots you
wish to use
"""
self._backend = backend
self._widget = DashboardWidget()
self._widget.on_trait_change(lambda tmp: self.update_fitlers(),
"filters")
self._dimensions = {dim.name: dim for dim in dimensions}
self._widget.dim_code = json.dumps(
{dim.name: dim.get_json_object()
for dim in dimensions})
self._widget.layout = json.dumps(
[plot.get_json_object() for plot in plots])
self._filters = {}
backend.register_dashboard(self)
