def parentChanged(self):
"""Reimplementation of :meth:`PlotDataItem.parentChanged` to handle
the change of the containing viewbox
"""
PlotDataItem.parentChanged(self)
self._updateViewBox(self.getViewBox())
# update legend if needed
try:
legend = self.getViewWidget().getPlotItem().legend
except Exception:
legend = None
if legend is not self._legend:
self._removeFromLegend(self._legend)
self._addToLegend(legend)
self._legend = legend
# Set period from ForcedReadTool (if found)
try:
for a in self.getViewBox().menu.actions():
if isinstance(a, ForcedReadTool) and a.autoconnect():
self.setForcedReadPeriod(a.period())
break
except Exception as e:
self.debug("cannot set period from ForcedReadTool: %r", e)
