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Don't crash if getting container changed signals before global stack

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Just don't get any signals. This function should be called again if the global container changed anyway.

Contributes to issue CURA-5045.
This commit is contained in:
Ghostkeeper 2018-03-27 09:29:41 +02:00
parent bd4aba2572
commit d74c1e0d7a
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2
cura/Settings/MachineManager.py
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@ -925,6 +925,8 @@ class MachineManager(QObject):
self.activeQualityChanged.emit()
def _getContainerChangedSignals(self) -> List[Signal]:
if self._global_container_stack is None:
return []
stacks = ExtruderManager.getInstance().getActiveExtruderStacks()
stacks.append(self._global_container_stack)
return [ s.containersChanged for s in stacks ]