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Don't allow removal of model parameters on which other parameters
depend
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nyalldawson committed Jul 3, 2017
1 parent 921939e commit 37cc8fc
Showing 1 changed file with 6 additions and 2 deletions.
8 changes: 6 additions & 2 deletions python/plugins/processing/modeler/ModelerGraphicItem.py
Expand Up @@ -229,8 +229,12 @@ def updateAlgorithm(self, alg):
def removeElement(self):
if isinstance(self.element, QgsProcessingModelAlgorithm.ModelParameter):
if self.model.childAlgorithmsDependOnParameter(self.element.parameterName()):
QMessageBox.warning(None, 'Could not remove element',
'Other elements depend on the selected one.\n'
QMessageBox.warning(None, 'Could not remove input',
'Algorithms depend on the selected input.\n'
'Remove them before trying to remove it.')
elif self.model.otherParametersDependOnParameter(self.element.parameterName()):
QMessageBox.warning(None, 'Could not remove input',
'Other inputs depend on the selected input.\n'
'Remove them before trying to remove it.')
else:
self.model.removeModelParameter(self.element.parameterName())
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