def postInitialize(self, wrappers):
super().postInitialize(wrappers)
# find wrapper of mesh layer parameter and register listener for changing its value
mesh_layer_param = self.parameterDefinition().layer
wrapper = next((w for w in wrappers if w.parameterDefinition().name() == mesh_layer_param), None)
# if not wrapper or wrapper.parameterDefinition().type() != 'mesh':
if not wrapper:
raise InvalidParameterValue('Dataset parameter must be linked to QgsProcessingParameterMeshLayer')
wrapper.widgetValueHasChanged.connect(self.on_change)
self.on_change(wrapper)
def value(self):
if self.dialogType == DIALOG_STANDARD:
if self.param.datatype == dataobjects.TYPE_FILE:
return self.param.setValue(self.widget.selectedoptions)
else:
if self.param.datatype == dataobjects.TYPE_RASTER:
options = QgsProcessingUtils.compatibleRasterLayers(QgsProject.instance(), False)
elif self.param.datatype == dataobjects.TYPE_VECTOR_ANY:
options = QgsProcessingUtils.compatibleVectorLayers(QgsProject.instance(), [], False)
else:
options = QgsProcessingUtils.compatibleVectorLayers(QgsProject.instance(), [self.param.datatype], False)
return [options[i] for i in self.widget.selectedoptions]
elif self.dialogType == DIALOG_BATCH:
return self.widget.getText()
else:
options = self._getOptions()
values = [options[i] for i in self.widget.selectedoptions]
if len(values) == 0 and not self.param.flags() & QgsProcessingParameterDefinition.FlagOptional:
raise InvalidParameterValue()
return values
def value(self):
if self.dialogType == DIALOG_STANDARD:
if self.param.datatype == dataobjects.TYPE_FILE:
return self.param.setValue(self.widget.selectedoptions)
else:
if self.param.datatype == dataobjects.TYPE_RASTER:
options = dataobjects.getRasterLayers(sorting=False)
elif self.param.datatype == dataobjects.TYPE_VECTOR_ANY:
options = dataobjects.getVectorLayers(sorting=False)
else:
options = dataobjects.getVectorLayers(
[self.param.datatype], sorting=False)
return [options[i] for i in self.widget.selectedoptions]
elif self.dialogType == DIALOG_BATCH:
return self.widget.getText()
else:
options = self._getOptions()
values = [options[i] for i in self.widget.selectedoptions]
if len(values) == 0 and not self.param.optional:
raise InvalidParameterValue()
return values
